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With the improvement of the quality of life of residents, central air conditioning air conditioning in the "new nobility" also from the large shopping malls, villas and other places entered the homes of ordinary people, but the central air conditioning also need to cleaning and maintenance in order to play the best effect on a regular basis, especially in the long term is not used. So in the hot weather after, it is best to a comprehensive cleaning disinfection work of central air conditioning, following Wuxi Miller Xiaobian is for everyone to talk about the air conditioning condenser cleaning method, you a cleaner healthy air conditioning environment. Refrigerant has a characteristic, when the volume and pressure to a certain time, it will become a liquid. Refrigerant compressor is transported to the condenser, the role of the condenser is the high temperature and pressure of the gas into a high temperature and high pressure liquid. This is the process of condensation, but also a heat dissipation process. A condenser is a device that will keep the refrigerant from gas to liquid. In this process, the condenser will continue to heat, so the surface of the condenser is very hot. Condenser of water quality problems due to, through the heat exchange heating operation, scale forming and oxygen corrosion products, caused by dirt in the system plug, leading to poor water, a long time without cleaning will cause the condenser heat transfer effect is reduced, affect the use and need to regular cleaning, cleaning after the meaning of are as follows: 1, save energy, reduce operating costs In the central air conditioning evaporator and condenser heat transfer process, dirt directly affects the normal operation of the heat transfer efficiency and equipment, central air conditioning units running results show that without cleaning of central air conditioning host system run for a period of time after use electricity or fuel consumption will increase by 10-30% reduce the service life, reduce equipment depreciation use fee. 2, reduce downtime, improve the cooling effect The cleaning condenser can remove the sludge, make the pipeline flow smoothly, improve the heat efficiency of the condenser and the evaporator, thereby avoiding the phenomenon of high pressure running over pressure shutdown, improving the cooling effect and making the system safe and efficient. Cleaning procedure of air conditioner condenser 1, respectively, close the condenser water inlet and outlet valve 2, the system will emit a small amount of water; 3, in the condenser inlet and outlet pipes were set up temporary circulation system (can remove the sewage valve, pressure gauge, safety valve, etc., with the hose and tank pump connection); 4, the safe and efficient detergent dissolution, pump from the water inlet of the lowest injection, to return from the water outlet, cyclic immersion 3-5 hours or so. At the same time, we test effect of the water in the tank, until the tank is no reaction, and scale are clean now. 5, discharge of sewage, rinse with water; 6, open the condenser end cap, with a brush in each root of condenser copper tube inner wall of the back and forth i-sa will clean up the sludge scale for each root of condenser copper tube inner wall; with high pressure water gun will clean up the sludge scale for each root of condenser copper tube inner wall and asked to reveal the copper metal surface, bright and free from corrosion; 7, rinse with water, discharge of sewage; 8, the condenser end cap back to the recovery system; 9, add water to join the pre membrane agent cycle 10-20 minutes, soak for about 24 hours, the sewage can be made to clean the inner wall of the condenser copper pipe pre made a layer of protective film, to prevent the role of oxygen corrosion and slow scaling. 10, restore the system everywhere, try to pressure all normal can.
A, carbon cleaning agent is really useful? True and false question, not to say that the original book and pirated book product itself is the problem, but for the use of true and false, "true" effective? Is it really useful? "Really" can solve the problem? Qianzhaihaiqian perfectly justified, so myself sick sense is to take medicine and drugs play only solve you the problem is ill, and cannot guarantee long-term has not sick! Unless, of course, you increase your exercise and improve your immune system! For cleaning oil, I think the carbon deposit cleaning agent effective. The main reason is that the: product performance: the product carbon cleaning agent by high activity, rapid penetration of solvent and specially selected detergent and corrosion and preparation for multi group composition; (2) the professional strong: mainly used for on-line cleaning air compressor, heat conduction oil combustion product deposits equipment components, applicable to various types of oil carbon deposit cleaning. Safe and reliable: non flammable and explosive goods, and not because of the use of a product for the use of carbon cleaning agents to cause damage to the body; In the same way, the use of carbon deposition cleaning agent to ensure that in a certain period of time (such as three months, six months, one year) will not allow your equipment to reproduce this fault, to solve the problem you are facing is the key! In addition, in order to avoid the frequent occurrence of equipment failure, the need for regular cleaning, maintenance, in order to ensure long-term operation of the equipment is good! As the carbon cleaning agent manufacturers, second questions to help you solve the problem is the selection of: Two, how to choose to purchase carbon cleaning agent selection? Although the procurement for the majority of customers is familiar can't familiar part of the work, but how to choose products, carbon deposit cleaning agent procurement really are familiar with it? Products, popular speaking is for you need water treatment agent, learned from the different channels of information, comprehensive comparative analysis and the implementation of the workflow. A selection, choose the direction, two is the quality, three chose the service. What disease to eat what medicine, choose chemical environmental protection water treatment agent product is the same, you need to identify the direction, the choice should be targeted! Carbon cleaning and cleaning agent is the same as: air conditioner cleaning agent, the need to use the central air conditioning cleaning agent, are the same reason! Quality, product quality, direct impact on the use of products, so you have to take back to the most you worry about the most carbon deposition cleaning agent useful / easy to use it?" On this issue! Simple understanding, quality is the guarantee! Service, whether it is technical and after-sales service, efficient work efficiency and ability to solve the problem quickly, is key to your selected products! And this one, the key factors of influence, presumably you will know!
In the production process of oil field, the change of pressure and temperature or the incompatibility of water phase can cause scaling on the surface of formation, wellbore and pipeline, which will affect the production of crude oil. At present, many oil fields in our country have entered the high water cut stage, and the scaling problem has become more and more serious. There are two main reasons for scaling in oil field. One is formation water containing high concentrations of easy scaling salt ions, in the production process of pressure, the change of temperature and water content changed original chemical equilibrium and produce scale, mainly the scale composition is calcium carbonate, mixed with magnesium carbonate, calcium sulfate / magnesium, China's onshore oil field scale mostly by this. Two is two or more than two incompatible water mixing, scaling ion interaction and scale formation, the most common are barium sulfate and strontium sulfate scale. In particular, the formation water often contains barium strontium ions, while the seawater contains a large amount of sulfate ions, and both of them are mixed to produce the insoluble barium sulfate scale. In addition, oilfield scale reasons but also because some ion binding will form in the water insoluble and soluble and slightly soluble substances, these substances could easily become a accumulation of scale, namely the salt scale. Usually, this kind of scale is composed of carbonate and sulfate, typical of calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate and so on. This scale formation in general will experience a process of nucleation and growth, first a small amount of scale core on the pipe surface formation, adhesion, and more other fouling compounds around these core aggregation, become more large scale group. With water erosion, part of the scale has been obliterated, but other scale continues to generate, may end up blocking the pipes, with the increase of temperature, the insoluble or slightly soluble salt solubility decreased, more and more of the substance separated from water, become scale. In some pipes, when the temperature is higher than 60, there will be a significant scaling trend. The higher the temperature, the more serious the fouling tendency. The flow rate of water will obviously affect the trend of scaling. The water flow more relaxed, more stable scale core growth environment, with pipeline transportation medium velocity decreased, scale the probability increased gradually, the flow velocity and the flow direction suddenly change will exacerbate the scaling.
Cleaner: scale and corrosion inhibitor and scale and corrosion inhibitor and application in open recirculating cooling water system of integrated water treatment agent, corrosion and scale inhibitor agent recommended dosage for 60-120ppm, but specific adding dosage need basis to supplement the water! Another recommended dose is 20-100ppm, the specific added value is needed based on the actual situation analysis. Fungicides: Fungicides widely used in petroleum, chemical, electric power, textile and other industries of the circulating cooling water system, but also as a textile printing and dyeing industry, fungicides and softening agent, antistatic agent, emulsifier, conditioner; fungicides for sterilizing algicide, generally cast dosage is 50-100mg/L; slime stripping agent, the amount was 200-300mg / L.. Different uses, different dosage of added value. And fungicide should be used for industrial use open circulating cooling system is effective to control the growth of microorganisms, dosage 50~300ppm; fungicide dosage according to the degree of pollution, supplement varies depending on the water quality and control requirements and other factors. Dispersing agent, dispersing agent is a liquid, low foaming and non ion, hydrolytic stability of dispersing agent, has been widely used in cooling tower system, in order to spread the grease, sludge, sediment, soil and other suspended particles; also because it contains strong surface active agent, to clear the bodies of dead organic matter quite helpful and enhance the efficacy of fungicides. Recommended dosage for correct dosage 5~50ppm, according to the amount of contaminants, system type and control requirements of the different degree of the set. In summary, the circulating water system of classification is above three kinds of water treatment chemicals, actual situation the need to add to the number of charge, you need to according to actual situation to judge with water quality analysis and test results are numerically determined!
In water treatment, it is very important to deal with the cooling water cycle. In the industrial circulating cooling water, the reproduction of microorganisms harm is to promote or accelerate the corrosion of metal equipment and pipeline, resulting in slime deposition in equipment to equipment corrosion, to the industrial production bring great security risks and economic losses. First, the common fungicide classification 1 oxidizing sterilization and algae killing agent Chlorine, chlorine, bleaching powder, chlorine dioxide, two chlorine or three chlorine acid and its sodium salt. Br: halogenated hydantoin, Hypobromites, bromine chloride etc.. and peroxide. 2 non oxidizing sterilization and algae killing agent Season ammonium salt, quaternary phosphonium salts, isothiazolone, slime stripping agent, organic aldehydes and other kinds of non oxidative bactericide algicide. Two, the development trend of sterilization and algae killing agent The diversity of microbial species in the chilled water system determines the diversity of the species. Development of a broad spectrum, high efficiency, low toxicity, high cost, and environmentally friendly cooling water special bactericidal algae killing agent, is the inevitable trend of development. Due to the limit of chlorine is a greater development space for bromine compounds, environmentally friendly, efficient, low toxic and non oxidative sterilization of algae is also more and more attention and welcome to the market. In order to adapt to the development of water treatment technology, it will be a good development direction to develop the synergy of chlorine and bromine with bromine. On the basis of the existing fungicides, the development has the synergistic effect of complex products, play to maximize the potential of existing varieties, development according to the characteristics of bactericidal algicide, a more effective agent, will become future sterilization algicide and development direction.
Engaged inchemical wastewater treatment for 15 years, chemical companies and more than 2000, Jiangsu Lanxing chemical environmental protection Co., Ltd. (hereinafter referred to as the "Blue Star Chemical environmental protection") general manager Jiang Weiqun has been compared to understand the enterprise's attitude: "before there is indeed do not attach importance to, or technology does not pass the, steal row or excessive emissions; but now on the one hand, the environmental pressure is more and more, on the other hand a lot of people still hope to continue to develop their own businesses, really want to control more and more enterprises, but the existence of technical and cost problems." "Chemical fine chemical industry wastewater is very complex and changeable, toxic and harmful substances kinds, high concentration." According to him, before the chemical industry is to take a comprehensive approach to deal with. "In fact, it is a mixture of treatment. With a large amount of water to dilute the waste water, so that the concentration of COD decreased to 500 mg / L, basically do not have the biological toxicity after discharged into the sewage treatment plant." But this reporter has learned that such a traditional way of processing in recent years has not been much space. Textile printing and dyeing, chemical content of the larger industries, national level has by industry emission standards for enterprises with water to make restrictions; and some areas of Jiangsu and Zhejiang, the pilot implementation of the heavy pollution and the drainage of large sewage card, concentration and total amount of emissions are required; and in the arid areas in Northwest China is does not have the dilution and discharge conditions. Chemical business representatives told reporters that, at present China's large-scale energy and chemical companies distributed in the area of water, facing the contradiction between two aspects: is the shortage of water resources, but by a large amount of water; the second is wastewater treatment is difficult, but the emissions environmental capacity. These have become the main constraints of the development of the industry. "Enterprises and governments at all levels of management for the increasingly severe environmental protection pressure on the 'zero discharge' requirements of the increasingly urgent." But it's not easy. Prior practice shows that most of the so-called "zero emissions", basically did not break away from the traditional "membrane method of concentration + simple evaporation" mode, the system running stability is poor, the cost is high. And more importantly, the above zero discharge process has serious sequelae". For high concentration and high salinity wastewater, rely on evaporation and concentration, and finally the formation of the salt belongs to the hazardous waste, the need for professional disposal." Jiang Weiqun bluntly: This is just the water pollution into pollution. "With the increasing intensity of the country's environmental protection supervision, hazardous waste disposal is a burden on the cost of chemical enterprises unbearable." A chemical group responsible person said frankly, if the wastewater is then mixed salt extracts are according to the dangerous waste disposal, first, whether in the present hazardous waste generally emergency disposal ability whether professional institutions can receive all, only the disposal expenses one year amounted to ten thousand yuan.
The imbalance between the price of fungicides Some time ago mentioned "when science" lost "to the feeling", so for this perspective, science can be understood as the technology, the feeling can be understood as the price (subject to subjective judgment factors). Personally think that the right point of view is that technology should be the upper hand. The procurement of circulating cooling water system sterilization agent technology clearance, the product effect is not poor, the results before and after the use of a significant difference. So, your purchase price cost is worth it, and not because of wasted due to your loss! Whether it is to buy clothes or mobile phones, the same product also has a number of grades, not to mention different manufacturers. Know what is the main purpose of their choice of circulating water system, the main purpose is to solve the problem, no longer subject to microorganisms, pollutants, and reduce the effectiveness of the equipment to hinder the problem! Therefore, the procurement of circulating cooling water system sterilization agent should be a heavy technology, rather than the price of the fungicide has been caught, resulting in an imbalance between sterilization agent technology and the price of fungicides! Sterilization agent note operation than the effect Circulating cooling water system water treatment agent in the use of water treatment agent in the use of methods, operating procedures, need to be based on a more standardized standards. Even if the use of non-standard (do not recommend the adoption of non-standard behavior) the list of considerations, preventive measures, can not be ignored, to the effect that. Like fire, the most basic from the diet attention, not heavy taste, eat spicy food, and you are not to run counter to, abusive behavior, facing the consequences, only by your own bear! Fungicide (slime stripping agent) on the skin irritation, when used to wear rubber gloves and goggles. When the product is in contact with the skin, eye, need to use a lot of water rinse immediately, if more serious, the need for immediate medical treatment. Bactericidal agent on the skin without obvious stimulation, contact with the skin, only need to rinse with water can be. Whether the irritation of the circulating water to the skin is obvious, it is required to pay attention to the use of circulating water sterilization agent, preventive measures.
The weather is getting hotter and hotter, summer is the peak season for the production and sale of water treatment agents, but also the accident prone season, because the bactericidal agent, although slightly toxic, but also has a certain corrosive. Moreover, the corrosion resistance of the non oxidizing sterilization agent is more strong, and the hands and feet of the front-line workers often burn and bubble. For the front-line workers reflect, the Le state leadership attaches great importance, arrange the following initiatives: 1, sterilization and bath agent production areas and stacking area must wear safety helmets, clothing, chemical protective clothing logo, and indicate the corrosion danger sign. 2, the sterilization of the bath agent to be stacked in an orderly manner, not random placed, reverse order, but can not reverse the product. 3, sterilization and bath agent series products to strictly control the packaging cover to disposable sealing lock cover, to ensure that the product does not spill. The workers agreed to the move, in addition to front-line workers and allotted new clothing to protect its own security. Music Bangjing water of sterilization bath agent every summer, need from other production line personnel seconded to help sterilization bath agent production line production tasks, production task becomes larger, the demand for plastic packaging barrel also increases. As a sterilization and algae killing agent, the general dosage is 50-100mg/L, and the amount of 200-300mg/L is used as the adhesive sludge stripping agent, and the amount of organic silicon type anti foaming agent can be added when required. This product can be made with other fungicides, such as with the use of isothiazolone, glutaraldehyde, disulfide cyano methane, can play a synergistic effect, but not with chlorophenols pharmacy common use. Adding the product after separation by circulating water and dirt, should be filtered or remove, lest the bubble disappeared after deposition
At present, there is no uniform understanding of the corrosion mechanism of water treatment agent corrosion inhibitor, and several main theories are introduced in the following. (1) adsorption theory It is considered that the corrosion inhibitor is adsorbed on the metal surface to form a continuous adsorption layer, which can protect the corrosion medium and metal. It is generally believed that the corrosion inhibition effect of organic corrosion inhibitor is the result of adsorption. This is because the organic corrosion inhibitor molecules are composed of two parts: part is easy to be metal adsorption of hydrophilic polar groups, and the other part is hydrophobic or lipophilic organic atomic group (such as alkyl). Very basic end is adsorbed on the metal surface, and the increasing water end up forming alignment, the corrosive medium is corrosion inhibition agent molecules arranged extrusion, such adsorption makes medium and the metal surface spaced to metal protective role. (2) the theory of phase forming membrane Phase film theory that metal surface to form a layer of insoluble complexes, the insoluble complex is the product of ionic interactions of metal corrosion inhibitor and corrosion medium, such as corrosion agent amino acid in the hydrochloric acid and iron is generated [HORNH2][FeCl4] or [HORNH2][FeCl2] complex covering plays a protective effect on the surface of the metal. In concentrated hydrochloric acid and Fe, the Fe is formed on the Fe surface, a difficult solution of the complex, so that the metal is no longer in contact with the acid, slow down the corrosion of metals. (3) electrochemical theory From the electrochemical point of view, the corrosion of metal is the anodic and cathodic processes in the electrolyte solution. Corrosion inhibitor Canadians can block any process or the arrest of two process, in order to achieve slow down the corrosion rate. This effect can be expressed by means of polarization, increase the anode polarization or cathodic polarization, or both at the same time increase, so that the corrosion current I1 reduced to I2. Of course, the anodic polarization may also cause cathodic depolarization strengthened, the corrosion current increased to I2 ', thus exacerbating the corrosion. According to the above electrochemical principles, corrosion inhibitor can be divided into anode corrosion inhibitor, cathodic inhibitor and mixed type corrosion inhibitor. Oxide scale inhibitor Corrosion inhibitor, directly or indirectly, and the formation of metal oxides or hydroxides, and to form a protective film on the metal surface, this kind of protective film, a thin and dense, strong adhesion with the base metal, closely combined with, obstructs the diffusion of the dissolved oxygen, metal corrosion reaction rate reduced. This kind of protective film in the formation process, the membrane would not have been thickening. When the oxide film increases to a certain thickness, a portion of the oxide will diffuse to the solution, when the oxide to the solution diffusion trend become barriers to thickening of the membrane, membrane thickness growth almost automatically stop. Therefore, the oxide film type corrosion inhibitor effect is good, and there is excess inhibitor will not produce scale. Most of the film type inhibitor are heavy metal oxyacid salts, such as chromate, platinate and tungstate. Because of the heavy metal corrosion inhibitor, it is easy to cause environmental pollution, so it is generally used less. Nitrite is formed by the aid of dissolved oxygen in the water to form an oxide film on the surface of the metal and the oxide film is formed by the oxidation of the oxide film. It is worth noting that the corrosion inhibitor in the use of water containing oxidizing agent, it will be oxidized into nitrate, the corrosion effect will be weakened, so it can not be used with the oxidation of bactericidal type (such as chlorine and so on) at the same time. In addition, nitrite in the long-term use, the system will be a large number of bacteria in the system, can be a large number of bacteria breeding, can be oxidized to nitrite nitrate, so that the effect of reducing the corrosion. Therefore, the use of nitrite is also subject to certain restrictions. Ion precipitation film corrosion inhibitor in water The deposited film corrosion inhibition agent can and dissolved in the generation of ions in water insoluble salts or complexes, precipitation in the metal precipitated on the surface, resulting in the formation of corrosion film, this film is porous, thick, loose, mostly with the base metal adhesive poor. Therefore, it prevents oxygen to diffuse to the surface of metal incomplete, anti-corrosion effect is not very ideal, if the amount of corrosion inhibitor was too much, generated by the film thickness will continue to increase, due to the fouling layer thickened affect heat transfer, if temperature is higher, and the water bicarbonate, will generate carbonate scale and dissolve more carbon dioxide, so the system is unfavorable. The deposition film type corrosion inhibitor is a poly phosphate, silicate and zinc salt, etc.. Usually think of polyphosphate is an anodic type inhibitor, because it is mostly dominated by Fe2O3 and FePO4 protective film, it can inhibit the anodic reaction, but oilfield water Ca2, Mg2 concentrations were higher, poly phosphate easily and they generate complex deposition of the protective film is mainly calcium polyphosphate and poly phosphoric acid magnesium etc., they are deposited on the cathode surface, inhibits the cathodic reaction. Therefore, in the use of poly phosphate as corrosion inhibitor, the water should have a certain concentration of Mg2, Ca2 ions, so the corrosion effect is more significant. If using a poly phosphate as corrosion inhibitor, measures must be taken to control microbial growth, because the polyphosphates are microbial growth nutrients. It will promote microbial reproduction, resulting in a lot of conjunctival bacterial, the deterioration of water quality, so the effective sterilization measures is necessary. Zinc salt is a cathodic inhibitor, which is the role of the zinc ion, which produces Zn (OH) 2 in the cathode part of precipitation, the role of protective film. Zinc salt anions generally does not affect its corrosion inhibition ability, zinc chloride, zinc sulfate and zinc nitrate and can be selected, but if used zinc chloride, chloride ion content in water will increase, it can destroy the protective film, resulting in a number of adverse consequences, should be noted that when in use, the zinc salt is generally not used alone, if it and other corrosion inhibition agent used in combination, will have obvious synergistic effect. The use of zinc salt has some limitations, it is very serious pollution of the environment, if you can find other non polluting corrosion inhibitor, then should avoid the use of heavy metals as corrosion inhibitor. The metal ion precipitation membrane inhibitor This inhibitor is due to the activation of the metal dissolved, and the metal ions in the site and the corrosion inhibitor to form precipitation, resulting in a dense film, the corrosion inhibition effect is good. After corrosion film formation, even under the corrosion inhibitor in excess. The film also stop growing, because of the formation of corrosion film once, it will metal wrapped up, but not with corrosion inhibitor continues, will stop precipitate, anti corrosion film is no longer thickening. The protective effect because it is formed on the surface of the copper body of the chelate, thereby inhibiting corrosion. This kind of corrosion inhibitor and heterocyclic thiol, etc.. Mercaptobenzothiazol phosphate and polyphosphate used together, has a good effect on preventing metal corrosion. The adsorption of membrane type inhibitor Adsorption of membrane type corrosion inhibition agent is organic compounds, the molecule is hydrophilic and hydrophobic groups and hydrophilic groups of the molecules can effectively adsorb on clean metal surface, and hydrophobic gene toward the aqueous side, which prevents to metal surface diffusion of dissolved oxygen and water, so as to inhibit the corrosion reaction. This kind of corrosion inhibitor anti inhibition effect with the metal surface cleanliness has the very big relations, if a lot of dirt on the metal surface, the adsorption film formation not tight, not to isolate corrosion medium, the corrosion in local will be very serious. Adsorption of membrane type inhibitor with amine compounds and other surfactant compounds. To sum up, the oxide film type corrosion agent such as chromate although the effect is good, and the economy is reasonable and feasible, but in consideration of environmental protection, is expected in the future there will be great development, metal ion precipitation membrane type corrosion inhibition agent development is not large. So far, mainly used in the water and ion precipitation of the film type inhibitor, that is, poly phosphate and zinc salt. In recent years, many researches have been made on the adsorption film type corrosion inhibitor, and the experiment is also carried out in China.
The effectiveness of water treatment agent determines the cleaning of central air conditioning, so the research and preparation of water treatment agent has been the focus of attention. There are many kinds of water treatment agents in the market, which can be classified according to their function, including corrosion inhibitor, scale inhibitor, cleaning agent, passivation agent, and pre membrane agent. With innovative technologies, the chemical properties of water treatment agents are also constantly updated and improved, the original water treatment agent is mainly inorganic salts, after several commonly used high polymer to replace, until today. Early water treatment agent is relatively simple, mainly to corrosion inhibitor, the majority of chromium and phosphate as the main ingredients, not only the removal and sterilization effect is poor, but also caused by environmental pollution. With the change of water treatment agent, water treatment method has been improved. Most of the initial water treatment methods for water treatment, the main purpose is to slow down the corrosion.


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