Recently, we learned, Shaoxing City, Zhejiang Province People's Government Office issued the "coastal city 2018--2019 autumn and winter tackling air pollution comprehensive management action plan", as follows.

Less adopt comprehensive measures to reduce coal total coal consumption, coal consumption in 2018 to ensure that the total amount of negative growth. New non-owned coal-fired units, the implementation of new large-scale coal-fired units and coal consumption capacity equal or reduction alternative.

Optimize the use of natural gas structure, in principle, to new natural gas cogeneration and gas chemical projects, gas will adhere to the reform, orderly manner "coal to gas" project.

Carry out boiler (with tea furnace, operating a stove, grain storage and drying equipment, coal-fired facilities) an intensive investigation to establish accounting and inventory management, to develop a comprehensive remediation program in accordance with the unified deployment requirements boiler city, according to the law in accordance with regulations to increase fuel coal boiler out of efforts to achieve all cleared 10 steam tons / hour and coal-fired boilers to prevent high-polluting fuel boiler rebound has been eliminated. Boiler registration strictly prohibit new steam per hour 35 tons / hour of coal-fired boilers, coal-fired boilers new emission concentration to meet ultra-low emission of air pollutants, strict control of new biomass boilers, coal-fired boilers embodiments and low nitrogen urban built-up area of ​​ultra-low emission biomass boilers transformation.

Content of emissions can reach 30mg or less low nitrogen gas steam mechanical fuel hot water vacuum boiler: b, (which is the main reason many customers do not choose) the risk coefficient burner, furnace easily knock premix customers reflect? This scenario is suitable, the content thereof can reach the discharge 30mg or less content of nitrogen oxide emissions can be reached 30mg or less, but he has many shortcomings! 1 t boiler low nitrogen / low nitrogen boiler 2 t / 4 t environmental low nitrogen fuel gas boiler main boiler, steam boiler, gas steam boiler steam boiler a low nitrogen condensing nitrogen oxides hot water boiler, gas steam boiler, vacuum hot water boiler, one condensing gas boiler, gas boiler company Canadian GDP. A low nitrogen gas boiler. Broad actively studying low NOx combustion boiler side. a, less premix combustion engine, only some domestic manufacturers and American manufacturers are doing. But the quality of domestic instability, the United States is expensive.

Food processing industry uses steam mechanical fuel hot water vacuum boilers which operate food processing industry often use to steam boilers of various food processing operation is mainly carried out, in particular, a variety of breads or crackers and dairy enterprises to use more frequently, because the professional steam boiler with a good the thermal energy conversion and the ability to run stable, so use in the food processing industry will not only help businesses complete and efficient processing operations, but also to maintain clean and sanitary clean food processing implementation of environmental protection. Following small to lead everyone together at understanding the food processing industry uses steam boilers mainly operating items: first, boiling the food industry often require a lot of boiling can be achieved cooked food processing, can be completed quickly and efficiently through steam boiler boiling processing operations for different food processing quality requirements for foods high in particular for the hygiene, so only choose environmentally friendly high steam boiler no pollution to meet the needs of those who fried. Second, in many food processing distillation further need for effective distillation, distillation is the moisture in various food effectively separated by the steam boiler, the boiler is operated by distillation high vacuum to ensure not only food flavor, but also a variety of water inside the fast food apart from effective, ready for the next step of food processing operations. Third, disinfection and drying foods such as crackers or bread and meat, etc. need to be disinfected drying operation, is also inseparable from the operation of steam boilers to use, and fast food by high-temperature steam boilers have the advantage of high-temperature steam persons and foods after steaming who finished drying disinfection reach the standard, not only through the use of steam boilers safe and easy to control temperature and pressure, avoid food drying too far or moisture content higher processing negative phenomena . The total square of the steam boiler in the food processing industry can play a role in self-evident, and can achieve a variety of machining operations functions, in addition to boiling or distillation can also be extracted and disinfection drying and curing, etc., With good service, good after-sale steam boiler can not only ensure that the food processing industry to have efficient processing technique, but also to ensure food production standards of food hygiene and clean up to more demanding.

Maintenance and corrosion protection of a hot water mechanical fuel hot water vacuum boiler, water supply oxygen due to some timely accumulation of dissolved oxygen corrosion of hot water boiler will result in increased water supply process, therefore, at the same time equipped with the appropriate oxygen equipment should be better the efforts to control the entire water supply. The oxygen present embodiment mainly sodium sulfite chemical reaction oxygen, this effective method of oxygen can fully reduce the overall corrosion to metal. Meanwhile, some capacity is relatively increased water boiler, may also be employed in high vacuum or low oxygen equipment, a reasonable way is to use hot water boiler air evacuated, forming a gas hot water boiler pressure less than atmospheric pressure will reduce air leakage phenomenon occurs, play a good maintenance effect. Second, strict control of the pH of the boiler water in accordance with the regulations of the country, the pH of the boiler water is controlled within a predetermined range, this can be well protected by film formation, avoiding corrosion of the metal walls of the hot water boiler . Case of pH value rises or falls appear outside the furnace, to take timely measures to maintain, when the entire index is below 10, you can put some alkaline agents on the hot boiler to an appropriate increase to a normal pH, can also be run by using trisodium phosphate and sodium hydroxide to adjust the dose to accurately control the pH of the water throughout the furnace, so that, to maintain good control effect, helps to reduce boiler corrosion, build clean and efficient mode. Third, strengthen the maintenance of boilers disabled during shutdown, such protective measures are not taken, the boiler water and steam system of the metal surface corrosion is dissolved oxygen, since the boiler generated during operation is an alkylene iron corrosion products compounds, can become disabled at the time of high iron oxide compound, which makes corrosion process is repeated down the line. And therefore must take appropriate protective measures during boiler shutdown is disabled, avoid and mitigate corrosion of the boiler. Maintenance of two ways: First, dry maintenance, and second, wet maintenance Wet maintenance Currently we have taken as follows: (1) the pot of water after shutdown exhausted, remove scale, impurities and soot. (2) off (or blocked with the blind plate) each of the ducts of valves connected to the boiler. (3) The demineralized water injected into the boiler to a minimum level, with special preparation of a good basic corrosion pump liquid injected into the boiler. (4) When all the injection liquid corrosion boilers, boiler water supply valve is turned on, the boiler filled with demineralised water until the pot of water drained out from the valve, closing the valve and emptying the water supply valve. (5) Open special boiler water circulation pump, so that everywhere in the boiler alkaline solution concentration uniform corrosion. (6) During the maintenance, you should always do external examination, and regularly testing pot with water, and liquid or alkalinity level drops, should identify the reasons for timely processing and additional liquid. (7) periodically open water circulation pump, the liquid concentration consistent throughout. (8) during the wet winter maintenance of the boiler, the boiler temperature must be kept above 5 ℃ and do the following. a. during the entire maintenance, raw Microflame oven regularly in order to maintain the outer surface of the heated drying. b. To start a regular water circulation pump, the concentration of the solution is consistent throughout. c. also regularly take the solution testing, if the alkalinity is reduced, should be supplemented. d. Winter freezing measures to be taken. Conclusion of people using the hot water boiler in the current society continues to increase, for the maintenance and repair of hot water boiler has been people's attention, but at a certain point of view, people are now plagued by the boiler normal use of the main factors that boiler corrosion situation occurs, this corrosion occurs not only will make the life of the boiler there is a certain decrease in the safety of the boiler will make a corresponding reduction, so this needs to boiler rusting conduct a comprehensive analysis, and in accordance with the results of the analysis put forward countermeasures boiler fundamental Rusty effective solution, so that the development of China's water boiler to get some protection.