process analyzer for steam boiler

The basic structural characteristics of water-tube boiler shell and the difference between the boiler and the boiler in the form of a shell and the difference between the characteristics of boiler water tube boilers and shell type boilers are presented in the form of double-layer structure. Referred to as outer tube boiler shell, called the inner furnace tube piece (fire tube), a circular space between the inner cylinder and the outer cylinder is filled with water, and the inner cylinder combustion chamber. When pressure medium is steam, the boiler shell is in the depressed state, the furnace is under an external pressure. Shell boilers and vertical and horizontal type. Currently used fuel in the boiler combustion gas boiler horizontal Boiler shell. Shell boilers have the following common characteristics: 1, the pot of water and stoves are installed inside the shell. 2, the metal furnace (hearth) small size, surrounded by a water-cooled, water-cooled degree of difference, a difference of combustion conditions, must be high-quality fuel combustion; 3, the heat receiving area is reduced, evaporation, or thermal power will be relatively reduced, which requires installation of water pipes or tubes pyrotechnics, and to increase the capacity of the boiler heating surface; 4, the diameter of the pot shell shell, more open, irregular shape, and unheated portions of the internal heating, the temperature and the degree of thermal expansion are different, the housing for the poor safety; water tube boiler is a boiler wherein the mixture of water, soda water or steam flowing in the pipe, and the combustion flame or flue gas flow in the outer conduit. An industrial boiler, and the heating surface of the combustion chamber which is located outside the boiler tubes, and water vapor flow through the pipe. In one aspect, the boiler water tubes in the furnace wall a plurality (water wall), having a large radiation evaporator heating surface; the other hand, the convection heating surface is evaporated is also provided outside the furnace tube bundle, the tube bundle is connected to 1 to 3. Thus, the heating area is increased, the evaporation increases greatly. The present invention also has a low consumption of metal, the structure of good elasticity, heat transfer capability, high thermal efficiency, easily improved steam parameters to achieve mechanization and automation of advantages.

PM2.5 is frequently mentioned in recent years, and its main premise was that the formation of NOx, according to the latest research results show in Beijing, PM2.5 and NOx emissions due to the formation of more than 50% of the total proportion of PM2.5. Because of a large area of ​​coal to gas projects in recent years, the country's use of gas-fired boiler more than 50 million units in the Beijing area, gas boiler emissions will soon exceed the vehicle, as the primary sources of NOx in Beijing, so Beijing EPA first proposed the strict NOx emission standards: Beijing new boiler to perform emission limit of 30 mg / standard cubic meter for boilers with high-pollution fuel combustion zone ban, the implementation of emission limit 80 mg / standard cubic meter . The standard is much higher than the European emission standards for boilers, to the world's most demanding emissions standards in Southern California to move closer to the boiler.

3, clever structural design and energy saving

Boiler structure having a low nitrogen obvious features cleverly designed, optimized boiler furnace using a computer simulation designed such that its morphology even more generous coordination; In addition, the boiler further having a low nitrogen energy saving features, by using an outer pipe a relatively low thermal conductivity of the heat insulating glass wool insulation centrifugation, thereby reducing the amount of heat boiler and achieve energy saving effect.

Anthracite fired power plant for CFB boiler design:

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