Recently, Changzhi City, Shanxi Province have continued to improve as strongly promote the city's ambient air quality, issued the "Changzhi City, 2018--2019 autumn and winter tackling air pollution comprehensive management action plan" (hereinafter referred to as the "Program"), to take specific measures to 10 31 categories of air pollution comprehensive management.

"Plan" put forward, we will accelerate the adjustment of energy structure in the consolidation of ambient air quality improved results, adhere to progress while maintaining stability, promoting the city's air quality continues to improve.

2020 in accordance with the basic completion of the plains heating pre-season and winter heating coal-life alternative tasks required to develop a three-year implementation program to determine the annual coal task of governance. Husband and actively promote the use of solar energy centralized biomass priority to promoting the bulk coal governance of the main city and the plains surrounding county, the gas will adhere to the reform, in order to set the electrical change, has started in 2017 to protect the "coal to gas "" coal to electricity "project on the basis of reasonably determine this year's" coal to gas "," the number of coal to electricity "project. When the substitution of gas for coal, electricity instead of coal and other alternative methods, the gas source, the power to implement, the existing heating facilities can not be removed.

1, increase efforts to eliminate small coal-fired boilers and furnaces tea, operating farmhouse, drying equipment and other reserves of coal-fired facilities (collectively referred to as coal-fired boilers); and speed up the construction of centralized heating official website, giving priority to the use of combined heat and power production units and other clean heating in the heating mode out of the coverage of the official website of coal-fired boilers.

2, actively promote the 65 steam tons / hour or more coal-fired boilers built-up areas and urban transformation of raw material ultra-low emission boilers, coal-fired plants to achieve ultra-low emissions levels. Biomass boilers should be dedicated boiler, ban coal blended with other fuels, be equipped with efficient dust bags and other facilities.

3, accelerate the transformation of low nitrogen gas boiler NOx emission after the transformation in principle not exceed 50 mg / cubic meter, to encourage the implementation of 30 mg / cubic meter of lower standards.

1, a comprehensive investigation of the use of industrial furnaces, iron and steel, nonferrous metals, building materials, coking, chemical industry, focusing on the smelting furnace, melting furnace, sintering machine (oven), baked (calcined) burning furnace, heating furnace, drying furnace class 9 kinds furnace (kiln), coke oven, gas furnace or the like, to carry out an intensive investigation. And build on November 10, 2018 detailed inventory management, after 15 November 2018 are not included in the list of industrial furnaces management, fully integrated into the autumn and winter peak load shifting production program, implementation of the cut.

2, accelerate the clean fuel substitute, coal, petroleum coke, residual oil, heavy oil as the fuel of a heating furnace, heat treatment furnace, a drying furnace (kiln), and accelerate the use of clean energy and the use of plant waste heat, thermal power plants and the like instead.

Enterprises in the selection pressure gas energy saving cfb boiler become a development trend, what most noteworthy? Gas boiler water system of a pressure vessel and a closed piping components, by the fuel-fired heating, withstand greater than atmospheric pressure during operation, a certain risk, is the subject of special equipment supervision sector of particular scrutiny.

The energy saving cfb boiler become a development trend is mainly composed of two main bodies of the shell and the furnace and accessories for ensuring its safe and economical continuous operation, instrument auxiliary equipment, automatic control and protection system. The boiler is a boiler with a water-cooled crucible. Two reciprocating tubes are arranged in the left and right sections of the drum, and the front smoke box at the front of the drum is folded back. Between the drum and the lower box, there is a down pipe and a water-cooled manifold to form a frame of the combustion chamber. There is a steam separator on the top of the drum to reduce the water from the water vapor. The heating surface of the pot is the lower part of the drum, the water-cooled manifold and the pyrotechnic tube.

The temperature difference between the upper and lower walls of gas-fired energy saving cfb boiler become a development trend will cause certain damage to the boiler body, which will cause the compression stress on the upper wall of the boiler and the tensile stress on the lower wall. When the stress reaches a certain extent, the gas-fired boiler can be damaged or even cracked. Why would there be a difference in temperature? That is because there will be a certain degree of difference in temperature between the upper and lower walls of the drum in the initial stage of ignition of the gas-fired boiler, which is due to the low temperature of the metal steam on the wall of the boiler at the initial stage of heating up, and the condensation and heat release of the steam on the wall of the drum. The contact heat between the lower wall of the drum and the water also occurs, but the exothermic coefficient of steam condensation is higher than that of water. Larger, more heat absorption on the upper wall of the drum, so the upper arm temperature of the gas-fired boiler is much faster than the lower wall. This requires us to pay attention to some operation items in the operation of gas-fired boiler, so as to avoid the damage of gas-fired boiler and ensure the normal operation of gas-fired boiler.