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gas boiler working system

To prevent air pollution and ecological damage, protect and improve the environment, promote the construction of ecological civilization, and promote sustainable economic and social development, Nanjing, Jiangsu Province to develop and launch the "Nanjing Atmospheric Pollution Prevention Act," played on May 1, 2019 official implementation.

1, the implementation of energy consumption and total coal consumption control and intensity control system. City of total energy consumption and coal consumption control administrative department with the relevant departments in accordance with provincial and municipal energy conservation requirements, the preparation of periodic control energy consumption and total coal consumption embodiment, the Municipal People's Government for approval.

2, high-pollution fuel combustion zone ban prohibits the sale, burning polluting fuels; prohibit new or expanded high-polluting fuel burning facilities; has been completed, should stop using within the prescribed period the Municipal People's Government, or switching to natural gas , liquefied petroleum gas, electricity and other clean energy.

4, petrochemical enterprises should strengthen the recovery of combustible gases. Flaring device should be used to deal with emergencies, not as a daily air pollution treatment facilities.

5, to encourage the production, use, or free of volatile organic compounds less volatile organic content of the feedstock and products. Surface coating, packaging, printing, furniture manufacturing and other industries should use low VOC content of products. Petrochemical and other organic solvent, the company should improve the production process, a low content of volatile organic materials and products.

6, resulting in production and business activities of volatile organic waste gas should be carried out in a confined space or equipment, and the installation of, use of pollution control facilities. Shipbuilding and other production and business activities can not be carried out in a confined space, and building (structure) building routine maintenance of live animals, roads, bridges, etc., should take effective measures to reduce emissions of volatile organic compounds.

Second, grasp the "coal to gas," the key link.

1, removal of the original coal-fired boiler slag machine, coal hopper, coal equipment, chain grate, gearbox and so on.

2, by calculating the heat transfer in the furnace, the furnace geometry is determined, the center position of the furnace flame. Re-casting furnace, the furnace using the refractory castable

5. The local site environment protection standard

For natural gas fired boiler, if it has requirements about NOx emission , for biomass boiler , the particular emission is very important , if local is strict with the dust emission ,as 30mg/nm3 ,maybe the boiler system will need bag filter , the price will enlarge .

Problematic fired boiler working system (1) Henan small boiler gas boiler should be noted, by the Henan coal into gas boiler, i.e. the original becomes a negative pressure is now slightly positive pressure combustion burner, the furnace must be noted that the structure and the sealing wall problem; (2) prevent explosion of the furnace, a gas fired boiler furnace to Henan, when defective or incomplete combustion of fuel atomization gas in the furnace or heating surface of the end aggregate, fire or explosion occurs, and therefore, in appropriate sites shall boiler explosion vent means, while the control program should be added to the ignition and flame protection device of automatic control, to ensure safe operation of the boiler; (3) the selection and arrangement of the burner close to the furnace in the form of, should the flame in the furnace better fullness without forming dead air; adjacent flame of the burner to avoid mutual interference; low load flame holding in the furnace central position, offset from the center of the furnace to avoid the flame center of symmetry; unburned gas-air mixture is not in contact with the heated surface , to avoid the formation of incomplete combustion gases; hot flame to avoid high-speed heating surface erosion, in order to avoid excessive heating surface so that the wall strength of overheating. Burner arrangement also consider the gas pipe and duct arrangement, easy to operate, inspection and maintenance; (4) Mechanized layered coal-fired boiler, gas boiler to change Henan, first removing its longitudinal arch, taking into account the increase in the bottom heating surface to replace the grate, grate to prevent overheating burn; (5) gas velocity Henan convection heating surface is not limited by the gas boiler ash abrasion conditions, gas velocity can be increased properly, so the convection heat transfer heating surface coefficient increases, without increasing the heating surface of the boiler, can increase the pressure of the boiler, steam-water separation capability should be noted that at this time means the pot to ensure the quality of steam, hot air for the boiler had particularly important.

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