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Combustor for high/low-calorific-value gas

A burner and gas technology, applied in the direction of gas fuel burners, burners, combustion methods, etc., to achieve the effects of sufficient mixing, improved performance, and increased selectivity

Inactive Publication Date: 2012-09-19
中科为宇(北京)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The burner of this patented technology has a complex structure, high manufacturing cost, is difficult to implement, and cannot solve the problem of sharing high and low calorific values

Method used

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  • Combustor for high/low-calorific-value gas
  • Combustor for high/low-calorific-value gas
  • Combustor for high/low-calorific-value gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The burner for high and low calorific value gas of the present invention, such as figure 1 , figure 2 As shown, it includes a central burner 3 and four peripheral burners 2. The central burner is provided with a central fuel nozzle 6 and a central air nozzle 7 , and the peripheral burner is provided with a peripheral fuel nozzle 5 and a peripheral air nozzle 4 . The central fuel nozzle and the peripheral fuel nozzles are respectively provided with air intake pipes 8, the central air nozzle and the peripheral air nozzles are respectively provided with air inlets 9, and the air inlets are provided with an air volume regulating mechanism.

[0023] The combustion process of the high and low calorific value gas burner is that the low calorific value fuel water gas enters the central fuel nozzle 5 through the air intake pipe 8 of the central burner, and enters the peripheral fuel nozzle 5 through the air inlet of the peripheral burner. Air enters the central air nozzle 7 ...

Embodiment 2

[0025] Another embodiment of the present invention is as image 3 As shown, it includes a central burner 3 and three peripheral burners 2. The central burner is provided with a central fuel nozzle 6 and a central air nozzle 7 , and the peripheral burner is provided with a peripheral air nozzle 4 and a peripheral fuel nozzle 5 . The central fuel nozzle and the peripheral fuel nozzles are respectively provided with air intake pipes 8, the central air nozzle and the peripheral air nozzles are respectively provided with air inlets 9, and the air inlets are provided with an air volume regulating mechanism. The air inlet is connected to the oxygen-enriched preparation equipment. The oxygen-enriched preparation equipment is an oxygen-enriched membrane, and the oxygen content in the oxygen-enriched air provided is 30%.

[0026] In this embodiment, heavy oil pyrolysis gas is used as fuel with a high calorific value, and the heavy oil pyrolysis gas enters the central fuel nozzle 6 and ...

Embodiment 3

[0028] Another embodiment of the present invention is as Figure 4 As shown, including central burner 3 and 5 peripheral burners 2. The central burner is provided with a central fuel nozzle 6 and a central air nozzle 7 , and the peripheral burner is provided with a peripheral fuel nozzle 5 and a peripheral air nozzle 4 . The air inlet pipe 9 of the central air nozzle 7 is connected with the pressure swing adsorption oxygen generator to provide oxygen-enriched air with an oxygen content of 50%.

[0029] In this embodiment, two fuels with high and low calorific value are used, and the high calorific value fuel has a calorific value of 18250kj / m 3 coke oven gas, the fuel with low calorific value is kj / m with a calorific value of 5900 3 Producer gas. The fuel with high calorific value enters the central fuel nozzle 6 through the feed port, and the fuel with low calorific value enters the peripheral fuel nozzle 5 through the feed port. Air enters the peripheral air nozzle 4 thr...

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Abstract

The invention relates to a combustor for high / low-calorific-value gas, which comprises a central burner and 3-8 peripheral burners, wherein the central burner is provided with a central fuel nozzle and a central air nozzle, and each peripheral burner is provided with a peripheral fuel nozzle and a peripheral air nozzle; the central fuel nozzle and the peripheral fuel nozzles are respectively provided with an air inlet pipe, the central air nozzle and the peripheral air nozzles are respectively provided with an air inlet, and the air inlet is provided with an air-quantity regulating mechanism; the air inlet is selectively connected with an oxygen-enriched preparation device, and the oxygen-enriched preparation device is an oxygen-enriched film or a PSA (pressure swing adsorption) oxygenerator; and each burner is provided with an independent fuel nozzle and an independent air nozzle, thereby ensuring the fully mixing of fuel gas and combustion-supporting gas, improving the combustion effect of the combustor, and improving the operation flexibility. The combustor provided by the invention has the advantages that: (1) an effect of combustion is performed through a plurality of nozzles, so that the fuel flows of the nozzles are fine, and fuels are fully mixed with air; (2) the air quantity is regulated by using a regulating mechanism, so that fuels with different calorific values can be combusted; and (3) different type of gas can be combusted simultaneously, thereby facilitating the reasonable application of gas resources.

Description

Technical field: [0001] The invention belongs to the technical field of combustion equipment, and relates to a burner, in particular to a burner for high and low calorific value gas. Background technique: [0002] There are a considerable number of low calorific value gas burners on the production site. H in low calorific value gas 2 The content of CO and CO is high, the main combustion characteristics are low ignition point, fast combustion speed, and high requirements for the mixing of fuel and air. In the case of the same calorific value demand, the volume flow rate of low calorific value gas is large, so the fuel nozzle needs to be large enough. However, the sprayed fuel flow is relatively thick, which will cause uneven mixing of fuel and air and affect the combustion effect. In addition, in actual production, different types of fuels with different calorific values ​​will be supplied at the same time. The fuels have different combustion values, combustion ignition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/00F23D14/32F23D14/58
CPCY02E20/34
Inventor 段正利王燕李晨亮罗洪林雷创孟兵川
Owner 中科为宇(北京)科技发展有限公司
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