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Primary air pipe applicable to combustor, combustor and solid fuel boiler

A burner and secondary air duct technology, applied in the direction of burning block fuel and liquid fuel, burner, burning liquid fuel and powder fuel, etc., can solve the problem of deepening coal powder and air classification, reducing emissions, etc. problem, to achieve the effect of reducing NOX generation

Active Publication Date: 2015-03-18
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing technology represented by the above-mentioned patents still needs to further effectively control the mixing of pulverized coal and air, deepen the classification of pulverized coal and air, and further reduce NO X emission

Method used

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  • Primary air pipe applicable to combustor, combustor and solid fuel boiler
  • Primary air pipe applicable to combustor, combustor and solid fuel boiler
  • Primary air pipe applicable to combustor, combustor and solid fuel boiler

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Embodiment Construction

[0034] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0035] In the present invention, unless stated to the contrary, the used orientation words such as "up, down, left, right" are usually properly understood in conjunction with the description of the directions shown in the drawings and the context.

[0036] refer to figure 1 The present invention provides a primary air pipe 3 suitable for burners, one end of the primary air pipe 3 is the primary air pipe inlet 31 allowing fuel to enter, and the other end is the primary air pipe outlet 32 ​​communicating with the furnace. The primary air carries pre-dried pulverized fuel, such as pulverized coal that meets the standard particle size requirement of 75% passing 200...

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Abstract

The invention discloses a primary air pipe (3) applicable to a combustor. One end of the primary air pipe is a primary air pipe inlet end (31) allowing fuels to enter the primary air pipe, the other end of the primary air pipe is a primary air pipe outlet end (32) communicated with a hearth, a plurality of fuel staging interference bumps are arranged on the inner wall of the primary air pipe outlet end of the primary air pipe and distributed along the circumferential direction of the primary air pipe at intervals, and each fuel staging interference bump extends in the direction close to the hearth along the axial direction of the primary air pipe by gradually increasing projection heights, so that an inclined surface is formed on the surface of each fuel staging interference bump facing a central area of the primary air pipe. The invention further discloses the combustor comprising the primary air pipe and a solid fuel boiler provided with the combustor. NOX emission of a coal-fired boiler can be effectively controlled.

Description

technical field [0001] The invention relates to the technical field of clean combustion, in particular to a primary air pipe suitable for a burner, a burner and a solid fuel boiler. Background technique [0002] Nitrogen oxides (NO X ) is a harmful pollutant that endangers human health and destroys the atmospheric environment. NO produced during coal combustion X Thermal NO X and fuel NO X Composed of two parts: Thermal NO X It is formed by the oxidation of a small part of nitrogen in the combustion air, accounting for the total NO X 20-30% of fuel NO X It is formed by the oxidation of a part of nitrogen in coal, accounting for the total NO X 70-80% of that. NO from coal combustion X In addition to forming acid rain and destroying the ecological environment, it will also form photochemical smog, which directly endangers human health. Therefore, industrially developed countries have begun to study the reduction of NO since the 1970s. X Various technologies for emiss...

Claims

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Application Information

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IPC IPC(8): F23D1/02F23C5/08
CPCF23C7/00F23D1/02F23K3/02
Inventor 吴章发黄峰仝胜录孙丹郭屹
Owner CHNA ENERGY INVESTMENT CORP LTD
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