Fast development of the circulating fluidized bed boilers, posed the question of obtaining data necessary for choosing CFBC boilers concept and design and calculation of the main regime parameters and boiler dimensions. According to my knowledge, there is no in open literature published methodology for investigation of the coal suitability for CFB combustion, and for obtaining data for CFBC boiler design and calculation of the optimal design parameters and dimensions.

Recently, Dezhou City, Shandong Province, has released the main points of pollution prevention and control in 2019, set specific targets and implement measures to control emissions of persistent pollutants SO2, NO2, to reduce the number of aspects such as severe pollution days.

1, continued to promote the total coal consumption control. Strictly implement the coal consumption reduction, equivalent alternative policy requirements. Continue to implement the monitoring and early warning mechanism to control the total amount of coal, coal consumption for the counties (cities, districts) were scheduled monthly, quarterly analysis, forecasting and early warning and timely release. Refined coal decomposition control mission objectives to ensure the completion of the annual total coal consumption control tasks.

2, strengthen renewable energy development and utilization. Actively promote wind, solar, biomass, geothermal and other renewable energy sources, promotion of power generation, industrial and residential heating and other heating applications. Achieve renewable energy consumption accounted for the proportion of primary energy consumption of more than 15%.

3, continue to promote the management of coal-fired boilers. The existing 35 tons of steam coal-fired boilers, according to ranking policy before the end of 2019 included in the phase-out plan. The inclusion of out of range, to ensure that out of the task before the end of 2020.

4, the implementation of low NOx combustion gas boiler reconstruction. To 2020 basically completed the transformation of low-NOx combustion as the goal, listing the existing inventory ledger gas boiler, to determine the transformation of an object, complete renovation in 2019 total about 50%. After transformation of NOx emission in principle higher than 50mg / m3. Achieve a stable concentration of nitrogen oxide emissions rebuilt 30mg / m3 or less (that is, ultra-low NOx combustion requirements) can be appropriate priority in provincial subsidies make up ecological civilization prize funds.

5, continue to promote clean coal. Strengthen clean coal production, supply, construction and distribution system, and continue to improve the implementation of the subsidy policy, to ensure the timely distribution in place to protect the people warm winter. Bulk coal market to strengthen the comprehensive improvement of law enforcement, the implementation of three coal detection mechanism to prevent inflow of low-quality bulk coal, clean coal to ensure quality standards. 2019, on the basis of full coverage in clean coal, continue to promote clean coal.

6, strengthen high-pollution fuel combustion zone ban construction. Combustion zone ban, a ban on new or expanded high-polluting fuel burning facilities have been built to the deadline to switch to clean energy. Investigate and punish illegal construction, expansion and high-polluting fuel facilities are not completed within the prescribed period rectification behavior. Ban on burning coal for a total ban on the circulation area.

7, continue to promote clean heating transformation. To proceed from reality, should the electric power, gas should the gas, the coal should be coal, should be hot is hot, warm winter to ensure the safety of the masses. Accelerate the pace of production, supply and storage of natural gas marketing system construction and gas storage facilities, improve air support capabilities. To develop multi-gas source, priority for clean heating, ensure safe and stable gas. Strengthen heating, gas facilities construction, expanding the central heating, gas, geothermal heating coverage. Accelerate the clean heating renovation project, before November 15, 2019 to complete the annual task of transformation goals. Complete power-generation coal, gas and other clean coal generation of heating transformation of the region, a total ban on bulk coal sales, to prohibit the sale and hoarding bulk coal, bulk coal to prevent the re-burning.

The basic criterion gas boiler operation is safe and stable, how to ensure the safe operation of the boiler, boiler room need to start from the construction and operation of the boiler, specific requirements are as follows: 1, boiler room enough to stay safe passage, and, to be taken outside the boiler door apart manner; 2, the boiler room is provided to the gas leak detection devices, the time monitoring operating conditions of the gas; 3, the boiler room is arranged to meet the fire safety requirements; 4, the boiler operating temperature and pressure can not be too high; 5, gas boiler the water level must not run too high or too low, to be controlled within a predetermined range.

Saturated vapor pressure gas steam boiler agent in power plant on wikipedia is how strong is the replacement gas is typically adjusted to replace Cube saturated vapor pressure. Increase in natural gas, gas steam boiler heat storage capacity increase in a greater number of saturated steam occurs, so that the pressure increases, natural gas will lead to reduction of the saturation vapor pressure weakened. Second, the replacement gas steam boiler reveal the degree of closure of the auxiliary valve saturated steam piping may be replaced with saturated vapor pressure (valve opening pressure ambassador weakened, so that the valve off a small pressure increase)