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The problems in steam boiler operation and the start-up of magnetic driven centrifugal pump will encounter many problems, among which the main problems are low temperature corrosion, slow exhaust speed, steam and water supply pipe damage and so on. The low temperature corrosion occurred on the low temperature heating surface of steam boiler has several main points: chemical corrosion and electrochemical corrosion. These two kinds of corrosion occur basically on the wall at lower temperature than the acid dew point. Ash deposition on the heated surface of evaporation can sometimes accelerate corrosion. The reasons for the slow exhaust rate are as follows: outlet filter core obstruction; too small cross-sectional area or long pipeline of piping; filter mesh blocking at the inlet end; reverse stop The valve won't open. Solutions to this type of problem: replace the outlet filter core, replace the larger cross-sectional line, or shorten the distance of the line; clean the filter and install an air filter at the inlet; check the spring of the reverse stop valve. In addition, steam boiler is easy to appear steam, water supply pipe damage phenomenon: when the pipe leak slightly, make noise, insulation layer wet or leakage steam, dripping water. When the pipe blasting, make a significant noise, and spray steam, water. The change of steam or feed water flow rate is abnormal, the blasting site decreases before the flow meter, and after the flow meter, the flow rate increases. A drop in steam pressure or feed water pressure. When feeding jellyfish tube blasting In 2000, the water level of the operating furnace dropped. The main causes of these phenomena are: steam pipe overtemperature operation, creep expansion beyond the standard or running time too long, metal strength reduced. Steam pipe heating pipe is not sufficient, resulting in serious water shock. The poor quality of water supply results in corrosion of pipe wall. The local scour of the water supply pipe causes the wall of the pipe to be scrubbed. Abnormal operation of the water supply system, excessive pressure fluctuations, water shock or vibration. Bad installation, manufacture, material and welding. The solution is: if the water supply pipeline leakage is slight, can maintain boiler feed water, and does not expand the fault quickly, can maintain short-term operation, put into the spare boiler as soon as possible, if the fault is added Drama, a direct threat to the safety of personal or equipment, should stop the furnace. If the water supply pipe blasting, we should try to detach the faulty pipe section from the system as soon as possible, and if it cannot be unlined and unable to maintain the drum water level, the furnace should also be shut down. If the steam pipe leakage is mild and does not enlarge the fault quickly, it can be maintained for a short period of time and put into the spare boiler as soon as possible. If the failure aggravates, it should be shut down if the failure directly threatens the safety of the person or equipment. If the boiler steam pipe blasting, unable to supply steam or direct threat to the safety of persons and equipment, should also stop the furnace. In the case of steam pipe blasting, an attempt should be made to unlist the faulty pipe segment from the system as soon as possible.

We learned that recently, Beijing issued a "three-year action plan to win the Beijing Blue Sky Wars," to date, mainly to strengthen ecological environment construction, pollution control tough fight to win Beijing, make the appropriate efforts. Details are as follows.

First, build a green energy system

Combined with the characteristics of the capital, in the city to protect the power supply, heat supply network under the premise of safe operation, relying on intelligent technology, strengthen external power transferred, increase the proportion of outside transmission. Full development of new local energy resources. Promoting clean renewable energy for heating, Municipal Development and Reform Commission, City Management Committee and other sector organizations to increase renewable energy use in key areas clean city sub-center, Beijing's new airport and other heating. In principle, to new natural gas cogeneration and gas chemical projects.

Second, lay Yajian coal finale

Led by the Agriculture Commission, in accordance with the principle of progressive advance of the first plains, mountains and then to "coal to electricity," the main scientific technical route choice, according to local conditions to promote rural village "coal to clean energy" work. 2018, the completion of the plains 450 villages "coal to clean energy" to carry out energy-saving synchronous rural residence. Completion of Pinggu District, clean energy transformation of coal-fired central heating boilers 5 of Yanqing district, the basic realization of the city's Plains "No Coal." In 2019, the development of scientific and effective mountains "coal to clean energy" technology roadmap, the heating period to break a long, large temperature difference and other problems, an orderly mountain villages of "coal to clean energy" work.

Third, improve energy efficiency

Municipal Development and Reform Commission and other departments to study and improve energy consumption limits system. City Housing and Urban Construction Commission, the Municipal Planning and Land Committee and other departments to revise new residential building energy efficiency design standards, energy-saving rate of more than 80%; accelerate the development of ultra-low energy buildings, new buildings strict implementation of green building standards. City Housing and Urban Construction Commission, the Municipal Urban Management Commission, Agriculture Commission and other departments saving renovations to existing buildings, Rural public buildings energy-saving standards and scope of the earthquake.

Fourth, accelerate infrastructure construction clean energy

City Management Committee, the Agriculture Commission and other departments to speed up the "coal to electricity" grid upgrading in rural areas, to meet the heating needs of the field of alternative energy. Into the "No Coal" facilities construction village, power and other reconstruction within the scope of planning in advance to give priority to implementation. Related power companies continue to strengthen the construction of power facilities and support capabilities.

Spoiler retardant inserted within a fire tube boiler, can slow down the rate of fume causes heat strengthened. Low temperature flue gas discharged from the smoke chamber, reducing heat loss to save fuel, the use of lower cost gas boiler professional.

There are many business units to be able to save more spending often treated boiler water will take unscientific methods and tools in boiler water treatment process used, equipment, etc. also do not comply with the relevant provisions, For example, "three noes" of electronic instruments and antifouling agent scale.

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