New Year period, Tongchuan City, Shaanxi Province seized by special pressure class inspectors seize the time, nonstop, through the tireless efforts have seven working days, the time limit runs successfully completed the Tongchuan city water quality testing and inspection work hundred sets of heating new generation boiler companys.

In recent years, with the state-owned enterprises "three for one industry," the pace of the transfer of a separate depth step by step, in 2019, Tongchuan City Gas Co., Ltd. and Tongchuan Mining Co., Ltd. together for the original Tongchuan Coal mining companies and construction companies and their subsidiaries heating boiler units of unified management, are responsible for heating in winter work Yintai District and Wang Yi district within the city limits and nearly 30 residential units.

After receiving the application of these reported that construction of heating boilers, special prosecutor of the city leadership attaches great importance to immediately convene all pressure classes held inspectors "to ensure safety, promote harmony" will mobilize, deploy test the backbone of the boiler units get together and reported in accordance with inspection, quantity, wide distribution and other characteristics, develop a reasonable and effective inspection plan, centralized arrangements for the inspection of boiler units, inspectors have extensive under the jurisdiction of the Meiyuan district, dragon community, nearly 30 residential and hospital infrastructure companies run first-line heating boilers, boiler to run one by one test, carried out investigation and security risks, all currently in operation has successfully completed a water quality testing and inspection of boilers, boiler inspection a total of 101 units, 90 water samples boiler. In the access to information process safety management of the outstanding problems that exist in the use of boiler units, in accordance with the relevant regulations and safety requirements of technical specifications, targeted proposed guidance. During the inspection the boiler, for general questions, on-site supervision and the use of units of the rectification. Meanwhile, the inspection found two Royal River Area of ​​boiler pressure parts leak is still sick to run for the safety problems on the spot requires the use of units to stop using the site issued a "special equipment inspection and opinions notice" to use the unit under and timely reported to the Council and served on equipment safety supervision departments seat safety supervision departments to actively supervise the use of the unit for rectification, at present, the use of hidden problems rectification units have been completed, the re-examination confirmed that security risks have been eliminated, effectively guarantee the safe and stable operation of the boiler .

To stop running after the new generation boiler company flameout, why fans need to continue ventilation 5min? Since the flame shutdown process, since the furnace temperature is lowered, the combustion unstable, so that incomplete combustion of fuel increases, the fuel remaining in the furnace and the flue waste heat of the furnace under heating, then combustion will produce a direct threat to the safety of boiler equipment. So turn off the boiler, ventilation fans continue for some time to take away the fuel in the furnace, but ventilation time not too long, otherwise due to the large amount of cold air directly into the furnace, make the furnace, flues and various heating surface is rapidly cooled contraction, resulting in damage. Therefore, the boiler flame, the ventilation fans continue 5min stopped, and then close the shutter smoke duct, so that the furnace and the flue is in the closed state, and also continues to monitor the flue gas temperature to prevent the pump do not re-combustibles combustion.

Said in the heat load new generation boiler company tons, it is the works with a ton, but also mean the evaporation capacity of 1 ton. It refers to the production of heat engineering 1 t of steam required over 1 hour, producing a clean source of Zhengzhou boiler units of t are calculated. 1 ton evaporation ≈60 million kcal / hour, 10,000 kcal / hour ≈0.0166 tons of evaporation, one ton evaporation ≈700 kW. 1 kilowatt evaporation ≈0.0014 ton 1 ton evaporation ≈0.7MW, 1MW≈1000 kW.

Condensing hot water new generation boiler company flue gas temperature below 40 ℃, not only the sensible heat of flue gas can be absorbed, but also at low temperature, the water gas generated by the combustion will be present in liquid form, which absorbs the latent heat in the flue gas.