Ultra-low calorific value gas burner

A technology of gas burner and calorific value, which is applied in the direction of gas fuel burner, burner, combustion method, etc., which can solve the problems of mutual leakage, large device volume, complex system operation, etc., and achieve the effect of stable combustion and avoiding fire

Active Publication Date: 2015-12-30
河北泓宇能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an ultra-low calorific value gas burner, make full use of the combustion and heat transfer characteristics of porous media, and overcome the large volume of the ultra-low calorific value gas burner in the prior art, which must have a reversing valve Realizing the reversing of flue gas and air leads to many disadvantages of mutual leakage and complicated system operation

Method used

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Examples

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Embodiment 1

[0029] The ultra-low calorific value gas burner of this embodiment is composed of a premixer, a preheating chamber, a combustion chamber, an igniter and a temperature measuring probe, wherein the premixer 12 used to complete the mixing of ultra-low calorific value gas and air is A cylindrical structure consisting of a closed metal cylinder. One end of the premixer 12 is welded and sealed by a flat plate, and the other end of the premixer 12 is welded on the flange member 20. The air inlet pipe 10 and the gas inlet pipe 11 are symmetrical. Welded at one end of the premixer 12, the air inlet pipe 10 and the gas inlet pipe 11 are symmetrically arranged and form an angle of 90°, and there are two premixed gas outlet pipes corresponding to the other end of the premixing chamber near the flange member 20 13. Premixed gas outlet pipe 13 and premixed gas inlet pipe 15 are connected by premixed gas connecting pipe 14; preheating chamber 29 is surrounded by outer cylinder 8, inner cylind...

Embodiment 2

[0031] The ultra-low calorific value gas burner of this embodiment is composed of a premixer, a preheating chamber, a combustion chamber, an igniter and a temperature measuring probe, wherein the premixer 12 used to complete the mixing of ultra-low calorific value gas and air is A cylindrical structure consisting of a closed metal cylinder. One end of the premixer 12 is welded and sealed by a flat plate, and the other end of the premixer 12 is welded on the flange member 20. The air inlet pipe 10 and the gas inlet pipe 11 are symmetrical. Welded at one end of the premixing chamber, the air inlet pipe 10 and the gas inlet pipe 11 are arranged symmetrically and form an angle of 120°, and there are four premixed gas outlet pipes 13 corresponding to the other end of the premixing chamber near the flange member 20 The premixed gas outlet pipe 13 and the premixed gas inlet pipe 15 are connected by the premixed gas connecting pipe 14; the preheating chamber 29 is surrounded by the out...

Embodiment 3

[0033] The ultra-low calorific value gas burner of this embodiment is composed of a premixer, a preheating chamber, a combustion chamber, an igniter and a temperature measuring probe, wherein the premixer 12 used to complete the mixing of ultra-low calorific value gas and air is A cylindrical structure consisting of a closed metal cylinder. One end of the premixer 12 is welded and sealed by a flat plate, and the other end of the premixer 12 is welded on the flange member 20. The air inlet pipe 10 and the gas inlet pipe 11 are symmetrical. Welded at one end of the premix chamber, and form an included angle of 180°, there are eight premix gas outlet pipes 13 corresponding to the other end of the premix chamber near the flange member 20, the premix gas outlet pipe 13 and the premix gas inlet The air pipes 15 are connected by the premixed gas connecting pipe 14; the preheating chamber 29 is an annular cylindrical space surrounded by the outer cylinder 8, the inner cylinder 9, the e...

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Abstract

The invention provides an ultralow heat value gas combustor, and relates to a premixing gas combustor. The ultralow heat value gas combustor comprises a premixer, a preheating chamber, a combusting chamber, an igniter and a temperature detection probe. The preheating chamber is filled with metal porous materials so that premixed gas is sent to the combusting chamber after full heat exchange and is lit through a preheated porous medium of a building block structure in the combusting chamber, and under the action of heat back flow and heat-preservation combustion promotion of a porous radiation panel, stable combustion of the gas at an ultralow heat value is achieved. Combustion and heat exchange characteristics of the porous medium are fully used, and the defects that in the prior art, an ultralow heat value gas combustor is large in size, direction changing of flue gas and air cannot be achieved without a reversing valve, and mutual leakage and operating complication of the system are caused are overcome.

Description

technical field [0001] The technical solution of the invention relates to a premixed gas burner, in particular an ultra-low calorific value gas burner. Background technique [0002] Usually, the calorific value is lower than 3300kJ / m 3 (Standard state) or 800kcal / m 3 (Standard state) gas is ultra-low calorific value gas. Because of its low calorific value, it is difficult to ignite and control, and it is often incinerated or discharged directly, causing a lot of energy waste and polluting the environment. Existing low calorific value gas burners generally can only burn heat value higher than 800kcal / m 3 Gas, powerless for the combustion of ultra-low calorific value gas. [0003] The combustion technology of ultra-low calorific value gas is mainly considered from two aspects: one is mixed combustion with high calorific value gas, fuel oil or pulverized coal; the other is to increase the preheating temperature of air and / or gas. Co-combustion technology uses some fuels wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/02F23D14/66F23D14/46
CPCY02E20/34
Inventor 王恩宇吴晋湘刘联胜苟湘方元
Owner 河北泓宇能源科技有限公司
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