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Basic structure of steam generator
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Basic structure of steam generator

Views: 1785     Author: Site Editor     Publish Time: 2023-01-15      Origin: Site


The boiler adopts the idea of furnace design to reduce the furnace volume heat release rate, and with the professional burner, the NOx emission is as low as less than 30mg/Nm³. 99% of the natural gas is methane (CH4), which contains a large amount of hydrogen (H). The flue gas after combustion contains a large amount of water vapor. Through theoretical calculation, the share of water vapor in the flue gas is about 18%, if the water vapor is condensed into water to recover the latent heat of vaporization in it, the heat recovery is about 5%, and the boiler efficiency can be improved to more than 100%.


Steam generator, also known as steam heat source machine, is a kind of equipment that generates steam. Its principle is to use fuel and other energy to heat water and turn it into steam. With the advantages of energy saving, environmental protection, safety and inspection exemption, steam generators quickly occupy the steam heat source market.

Steam generator is a thermal energy device that uses fuel or other heat energy to heat water into steam. Its basic structure is as follows:

1. Steam generator body

The main components of the steam generator, such as furnace, drum, burner, water wall, superheater, air preheater, constitute the core part of the steam generator, which is called the body. There are two important parts in the steam generator body, furnace and drum.

2. Auxiliary equipment

In addition to this, there are many supporting auxiliary equipment: pulverized coal preparation system, including pulverizer, pulverizer, coarse powder separator and pulverized coal pipeline; Air supply and induced draft system, including air supply fan, induced draft fan, flue gas duct, etc; Water supply system, including water supply pumps, valves and pipes; Water treatment system; Ash removal system, including slag extractor, dust collector, etc; Automatic control and monitoring system.

3. Combustion equipment

The combustion modes of steam generator include stratified combustion, combustion chamber combustion and boiling combustion. All combustion modes have corresponding combustion equipment. Fixed grate, chain grate, reciprocating grate and vibrating grate belong to stratified combustion type and are suitable for solid fuel combustion. Pulverized coal boiler, oil-fired boiler and gas-fired boiler belong to combustion chamber type and are applicable to solid powder fuel, liquid fuel and gas fuel. Bubble fluidized bed and circulating fluidized bed belong to boiling combustion mode, which is suitable for the combustion of particulate solid fuel. The chain grate of paver adopts stratified combustion and combustion chamber combustion, which belong to mixed combustion mode.


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