Recently, the district government Qingyang City, Gansu Province, deputy head of Xifeng Wang Chao organized a remediation coal-fired boiler accessories energy efficiencys will promote the work. By the township (street), the head of district straight relevant departments attended the meeting.

Written meeting issued atmospheric district office "notice Leading Group Office of Air Pollution Prevention " About forwarding; Qingyang City, Xifeng Branch is responsible for the ecological environment who informed the progress of the remediation coal-fired boilers, arrangements for the next step remediation work.

Wang Chao requires that all relevant units must concentrate efforts to promote coal-fired boiler renovation, remediation to the control list, in strict accordance with the "three three must" requirements, to promote catch, this area, this system is not in place of coal industry regulation boiler immediately carry out concentration and control, to ensure that the work complete, fully put in place. To collaborate actively cooperate with the township (street) mainly clear time limit for rectification and reform measures, solid progress. To strictly control inventory and remediation remediation standards of accountability and strengthen supervision of the ideological hesitation wait and see, action is delayed, focus on promoting renovation is not complete unit, accountability seriously investigated.

1. Reduce the heat loss of boiler accessories energy efficiency exhaust:

(1) The air leakage rate of the high air preheater, especially the air leakage rate of the rotary air preheater;

Coal boiler accessories energy efficiency developed primarily as fuel for power generation, fuel gas-fired industrial boilers major proportion of the total capacity of gas-fired boiler fuel in industrial boilers are generally occupied by more than 90%, for example, US 98%, Japan 99%. The late 1950s, China's Harbin, Wuhan and other places of the former Soviet Union boiler plant started using technology to produce fuel gas-fired boiler. By the early 21st century, the national fuel gas-fired boiler has accounted for about 6% and 10% of the total capacity of industrial boilers with the total number of units, annual production capacity of industrial boilers according to calculations, the fuel gas-fired boiler about 15%.

Safety valve manual valve oil-fired boiler accessories energy efficiency emission test is necessary to prevent security annex oil-fired boiler overpressure operation when the boiler pressure reaches the pressure relief valve jump start, jump start automatically relieve pressure. If the safety valve does not operate long-term, there is likely to stick to rust inside the valve structure, the valve can not be under pressure to adjust the automatic jump start, will cause the boiler overpressure operation, or even an explosion hazard boiler. In order to prevent the relief valve and valve seat stick, according to "Boiler Code" provides manual drain valve should be periodically tested. Oil-fired boiler Procedure: (1) in the boiler operation, when the state of the pressure pot 75% or more boilers operating pressure is reached, check valve use, to confirm the absence of abnormality, emissions test done manually; (2) valve lifting handle or the weight slowly, this time should jump start exhaust valve; (3) after 3-5 seconds, the weight or the handle down, the safety valve should be closed; (4) If the valve is not closed Yan, should be repeated by lifting the handle hammer until closed. If the valve is still closed tightly, the need for shutdown valve repair or replacement: stop the pump, the pump to stop, stop the fan off the main power, boiler exhaust valve opening, closing sub-cylinder inlet valves, valve disassembly, after repair or replacement, installation of safety valve, and then open the safety valve check if no abnormal, turn off the safety valve; (5) if jump start, a safety valve spool may be stuck foreign matter or embroidered dead, need for safety shutdown a valve for repair or replacement. Safety valve should be manually emission test points to note: (1) the pressure pot manual drain should be at least 75% of the state working pressure, prevent manual drain valve does not jump start at low pressure. (2) If there are two or more boiler safety valve, the discharge should be done in the first row of the high value of the low back valve. (3) for lifting and a manual valve handle should Qingtai light or weight, can not be used for lifting and Meng Jin. These are the emission test and safety valve manually precautions oil-fired boiler, we want to help.