low pressure paddy husk fired boiler

April 17, Nantong, Jiangsu Province, the municipal government issued the "Nantong City 2019 air pollution control program of work" ( "Program"). "Plan" is mentioned: Nantong City, 153 Taiwan low pressure paddy husk fired boiler regulation reform, which involves natural gas boilers, biomass boilers, coal-fired boilers; renovation project and will continue to implement ultra-low emission coal-fired units, a total of six thermal power companies more than 10 sets of 75 tons of steam / hour implementation of ultra-low emission coal-fired boilers.

1, the implementation of total coal consumption control. Strict control of the city's total coal consumption, focus more non-power industry scale industrial enterprises in coal consumption, ensure the completion of the province for cut coal task, the city's coal consumption in 2019 than in 2016 to reduce 2.46 million tons. Strictly implement the "Interim Measures for commercial coal quality management," restrictions on the marketing and use of ash ≥16%, sulfur ≥1% of bulk coal. A ban on new coal-fired heating boilers, and strictly control new coal-fired power projects along the Yangtze River in addition to the common back-pressure coal-fired units no new coal-fired power generation, heating project.

2, to promote the integration of thermoelectric project implementation. Coal-fired boiler with a takeover condition within a radius of 15 km of promoting heating above 300,000 kilowatts of large units and small cogeneration units shut down integration. Hoi Mei Ah thermoelectric Ltd. law shut down two coal-fired units totaling 27,000 kilowatts, the letter Qidong Taiwan 12,000 kilowatts coal-fired units.

3, to carry out comprehensive improvement of the boiler. Establish a list of the city's boiler management. Before the end of 2019, 35 tons of steam / h coal-fired boilers and total phase law or clean energy alternative embodiment, suitable in accordance with the electric power, gas and other appropriate gas the regulation principle; promote clean coal utilization, promote clean and efficient coal-fired boiler , 65 tons of steam / h coal-fired boiler and above all ultra-low emissions and complete energy transformation; promote the transformation of low-nitrogen gas boilers, in principle, after the transformation of nitrogen oxide emissions concentration up to 50 mg / m, and in accordance with the corresponding boiler safety requirements. Urban built-up area of ​​ultra-low emission biomass boilers implement reform; the remaining boiler with all the special emission limit requirements. Boiler renovation project completed in 2019 153.

4, to further promote the ultra-low emission coal-fired thermoelectric renovation project. Ultra-low emission coal-fired units continue to implement reconstruction project for six thermoelectric companies 10 75 steam tons / hour and over the implementation of ultra-low emission coal-fired boilers transformation. (Municipal Bureau of ecological environment lead)

5, along actively embodiment desiccant fumes off white coal-fired units. Huaneng Power International, Inc. Nantong Power Plant, Jiangsu Nantong Power Generation Co., Ltd. Nantong Tianshenggang power generators and Nantong Acetate Fiber Co., Ltd., Nan Ya Plastics Co., Ltd. and other companies implement flue gas dehumidification off white works.

6, the implementation of pollution control industrial furnaces special action. City casting, iron alloy, metal smelting and regeneration, glass, ceramics, tiles, refractory materials, lime, waterproof materials, fertilizers, inorganic salts, calcium carbide, etc., according to the melting furnace, the melting furnace, sintering machine (furnace), baking ( calcined) burning furnace, a heating furnace, heat treatment furnace, a drying furnace (kiln), coke oven gas furnace nine types of trades to carry out an intensive investigation. Closely integrated with the second census of pollution sources, establish a management inventory end of June 2019.

Fans how conservation low pressure paddy husk fired boiler service life longer insist on boiler fans periodic overhaul, maintenance of strict quality control. The elimination before the accident hidden danger in the bud, to overhaul a comprehensive, thorough, carefully check the wear, the impeller shaft and impeller balanced operation, with or without internal connections loose, collision, inlet baffle switch is flexible and bearing lubrication and cooling Happening. Take flue gas dust removal measures, regular cleaning flue boiler fans to improve the working environment. Dust removal equipment units to strengthen the dust removal operation and management, improve the efficiency of dust removal; no dust removal equipment units to time quantitative dosing into the boiler furnace special cleaning agents, and timely removal of fouling of the flue, the flue avoid clogging, the impeller damage accidents. Strengthen the operation and management, ban illegal operation. Boiler fan up and running, there must be strict rules. The induced draft fan starts to be unloaded, non-load starting, particularly when the boiler stoked, flue gas temperature is too low, such as with a load induced draft fan started, the starting current will increase much, and the start time is too long, fan motor overheat, overload is likely to burn out. Young fire in the boiler is running, pay attention drum, induced draft fan opening sequence, can not be reversed. I.e., first open fan, run for 10 minutes, and to exclude the furnace flue fouling or flammable gases, before the blower starts. If the first open blower, the induced draft fan, so that both the induced draft fan load is increased, so that the induced draft fan motor overheating burned, and the furnace may lead to explosion. Of the impeller blade surface hardening treatment to improve the wear resistance of the blade. Since the large fan boiler drawing high temperature flue gas fed is around 200 ℃, the flue gas contains large amounts of fly ash, SO2 and other corrosive gases, badly worn fan blades, fan output prone to drop, vibration, such as rupture of the blade. Therefore, to deal with a serious face or wear parts of welding blades to improve the wear resistance of the blade. Use DC welder welding, arc welding using manual method using a dedicated fan hardfacing strip (e.g., wear No. 1, Mo-Cr-B carbide electrode wear, etc.), and the electrode wear in 300 ~ 350 ℃ drying 1 hour use. Before welding, the surface of the blade should be fouling, rust cleaned, preheated to 100 deg.] C, with a small current, low voltage, temperature and speed, short arc welding symmetry. Practice has proved that, after surfacing treated leaves, wear resistance greatly improved, not only changed the fan impeller often wear, but also laid a good foundation for the safe operation of the fan.

Condensing gas low pressure paddy husk fired boilers advantage condensing boiler modules commonly used modular design, then condensing gas boiler module What are the benefits of it? 1, condensing gas furnace module small volume, no backup boiler, save space, improve space efficiency condensing gas furnace each module modules operate independently, when a single failure does not affect the overall operation of the system without backup boiler, small footprint, it can be installed in the basement and other small devices, reducing investment costs and improve boiler room space utilization. The high cost of land in the downtown commercial area, as guesthouses, hotels, office buildings, units of the corresponding organs to save floor space, save more land investment and boiler room construction costs. 2, energy-efficient condensing gas module, operating cost savings gas furnace with condensed condensation module principle, the proportion of high-performance combustion system, a proportional solenoid gas valve, automatic adjustment function, save gas, the thermal efficiency of up to 98%. Heating an area of ​​5,000 square feet, for example, hotels and 200 rooms, one quarter heating not only can save heating costs about 11,000 yuan, but also save the cost of hot water around the 8000-12000 yuan, this alone saves 20,000 yuan about gas costs, reflecting the economic benefits of condensing gas furnace module save gas energy. 3, enabling unattended, greatly reducing management costs and wages in the modern system of social management, the impact of cost factors can not be ignored is that management and workers' wage costs. Advanced furnace equipment module condensing gas proportional solenoid gas valve, according to the actual heat supply automatically adjusts the output power, the gas pressure switch real-time monitoring the supply pressure, the secondary combustion gas valve time monitoring security systems to ensure safe and reliable. 4, condensing gas furnace module procedure is simple and convenient, does not require registration and annual inspection security audit. Condensing gas furnace module using 2000bar standards for municipal low pressure natural gas without building an independent regulator station, hydraulic systems during operation in addition to normal pressure is always in a state loop, but also with multiple comprehensive security protection, safe, reliable, simple and convenient procedure, You do not need security record. 5, climate compensation module boiler, energy-saving and comfortable. Gas boiler in the heating season outdoor temperature varies from month to month, the same day the outdoor temperature is different at different times of the heat demand of the building will vary widely. Smart central controller with an indoor temperature sensor and a water temperature sensor, real-time collection and heating the indoor ambient temperature signal, automatically calculates the optimum water temperature, and controlling the number of modules put into operation, while maintaining room temperature stability, saves fuel, significantly lower operating costs. 6, gas condensing boiler system independent circulation, reduce fouling, eliminating the need for post-maintenance costs. Condensing gas furnace module long life, easy installation, low power consumption, easy capacity expansion flexibility and other advantages, not only reflects the small size, low cost, energy-efficient features, but also to maximize use and from the pre-post-maintenance We are saving input costs and operating costs.

Power step-low pressure paddy husk fired boiler heating control law input sharing group, the group can be randomly put into or heating is stopped according to the load variation, and significantly reduce the impact on power. You can also manually start the same time, the number of heating zones to stop, user-friendly self-adjust electric power boiler. Control system controls the circulation pump start and stop in accordance with the temperature of boiler water. Hot water circulating pump is stopped when the furnace temperature reaches an upper limit, below the hot water circulation pump start lower limit temperature.

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