boiler rice husk fired
Third, the installation of blowdown or heat exchanger.
To the steam boiler blowdown installed on the heat exchanger or boiler blowdown recycle, and subjected to rigorous controls to ensure emissions below 5%, and if the best conditions to control below 2%. In addition, heat may also be recovered by utilizing a trap device expansion, so that the work holder can also trap properly. Trap in the steam condensate, water quality is often good, it comes from the quality of the boiler feed water, the recovery process can also save the cost of water.
When the boiler rice husk fired operation, the reason of maintaining the water level in the normal range: the boiler drum water level is too high, will affect the effect of water separation, the wet saturated steam fraction increases, increased salinity, and likely to cause wall superheater Steam Turbine sCALING stream, superheater flow area decreases, the resistance increases, to improve the heat resistance, the wall-temperature, and even burst pipes; the other also result in increased moisture vapor turbine efficiency is lowered, increasing the axial thrust and the like. Serious water superheated steam temperature over a sharp decline in the steam piping and steam turbine to generate water impact. Cause devastating accidents.
How to prevent the boiler rice husk fired furnace coke? In order to prevent the boiler coking, on the run may take the following measures: (1) a reasonable adjustment of combustion. Flame distribution in the furnace, the flame is not deflected center; (2) to ensure the proper amount of excess air, to prevent combustion hypoxia; (3) to avoid operating the boiler load exceeds the force; (4) ash periodically. Ground inspection found that fouling and coking village promptly removed. In terms of maintenance should be done: (1) improve the quality of maintenance, to ensure accurate installation burner; the boiler (2) maintenance tightness better, to prevent air leakage.
Recently, Guizhou Province to combat air pollution, protecting and improving the quality of atmospheric environment, the protection of public health, promote the construction of ecological civilization, and promote comprehensive, coordinated and sustainable economic and social development, in accordance with the provisions of "People's Republic of China Air Pollution Prevention Law" and relevant laws and regulations of atmospheric pollution prevention and control regulations to be amended.
Article XVI: prohibits a planned urban area built or expanded cement, coal chemical, coal-fired thermal power, coking, metallurgy, ceramics and other serious air pollution industrial projects.
Article 24: Prohibition by waste-water treatment, tampering or falsification of monitoring data, in order to avoid on-site inspection for the purpose of the temporary shutdown, open the emergency discharge channel non-emergency situations, abnormal operation of pollution control facilities and other atmospheric discharge atmospheric way to avoid regulation contaminants.
Article 39: It should be the overall planning of urban construction, coal-fired heating in the region, promoting cogeneration and district heating. In the central heating pipe network coverage area, a ban on new or expanded scattered coal-fired heating boilers have been built coal-fired heating boilers can not discharge standards, should be demolished within the prescribed period the city government.
Shall manufacture, import, sale and use do not meet environmental standards or requirements of the boiler.
41: partial restriction sulfur, high ash coal mining, mining prohibition radioactive and arsenic and other toxic substances than standard coal. New coal mines must simultaneously supporting the construction of coal washing facilities. Have been built coal mines, it should be in accordance with national requirements, supporting the deadline for the completion of the coal washing facilities.
Prohibit the import, sale and burning of coal does not meet quality standards, to encourage high-quality coal burning.
Prohibit the import, sale and burning does not meet the quality standards of petroleum coke.