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Oxygen-enriched combustion method and device

An oxygen-enriched combustion and oxygen technology, applied in the field of combustion, can solve the problems of affecting the economic benefits of production and operation, increasing the labor intensity of operators, and insufficient combustion, so as to avoid coking at the burner outlet, avoid black smoke from the chimney, and improve combustion quality effect

Active Publication Date: 2012-06-20
SOBC ENERGY SOURCES SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, due to the operation and combustion equipment, especially the fuel burner using liquid fuel, poor atomization or insufficient combustion often occurs, resulting in poor combustion effect and low thermal efficiency of the fuel. Coking and black smoke from the chimney
Removing coking will not only increase the labor intensity of operators, but also directly affect the production operation and the economic benefits of the enterprise. At the same time, black smoke will pollute the atmospheric environment
At high altitudes, as the altitude increases, the air becomes thinner, the oxygen content decreases, and the fuel burns poorer

Method used

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  • Oxygen-enriched combustion method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Oxygen-enriched combustion device of the present invention such as figure 1 , figure 2 , image 3 As shown, it includes a casing 21 , a fuel nozzle 4 , an oxygen nozzle 5 and an air nozzle 6 . The oxygen nozzle, the air nozzle and the fuel nozzle are arranged in a concentric ring, the fuel nozzle is located at the center, the air nozzle is located at the periphery, and the oxygen nozzle is located between the fuel nozzle and the air nozzle. The air nozzle is connected to the blower through the air inlet pipe 3, the air line. The oxygen nozzle is connected to the pressure swing adsorption oxygen generator through the oxygen inlet pipe 2 and the oxygen pipeline. The pressure swing adsorption oxygen generator is mainly composed of a blower, a vacuum pump, a switching valve, an adsorber and an oxygen balance tank. The fuel nozzle is a swirl type liquid fuel burner, which is composed of a housing 20 , a liquid swirl nozzle assembly 11 , a swirl channel cylinder 9 , a con...

Embodiment 2

[0024] Another embodiment of the present invention is as Figure 4 As shown, the fuel burner is a swirl gas fuel nozzle, which is composed of a housing 20 , a gas swirl nozzle assembly 16 , a swirl gas channel column 18 , a connecting piece 8 and a high-pressure gas fuel chamber 14 . The gas swirl nozzle assembly, the swirl gas channel column, the connecting piece and the high-pressure gas fuel chamber are connected in sequence, the high-pressure gas fuel chamber is connected to the gas fuel inlet pipe 17, and is connected to the fuel supply equipment through the gas fuel inlet pipe and the gas fuel pipeline . There are 10 swirl gas channels 19 in the swirl channel column, and the gas swirl nozzle assembly is provided with 10 gas fuel nozzles 15, which correspond to the swirl gas channels and are evenly distributed around the center of the fuel burner. The gas fuel nozzle is a diffusion nozzle. Other structures and combustion modes are the same as in Example 1.

Embodiment 3

[0026] Another embodiment of the present invention is as Figure 5 As shown, the fuel burner is a swirling gas-liquid dual-purpose fuel nozzle. The swirling gas-liquid dual-purpose fuel nozzle is composed of a liquid fuel part and a gas fuel part, the liquid fuel part is located at the center, and the gas fuel part is ring-shaped and located around the liquid fuel part. The liquid fuel part is composed of a liquid swirl nozzle assembly 11, a swirl channel cylinder 9, a connecting piece 8 and a high-pressure liquid fuel chamber 7, which are sequentially connected. The high-pressure liquid fuel chamber is connected to the liquid fuel through the liquid fuel inlet pipe 1, the liquid fuel pipeline Tank connection. Five swirl channels 10 are arranged in the swirl channel cylinder 9, a swirl chamber 13 is arranged between the liquid swirl nozzle assembly and the swirl channel cylinder, and a liquid fuel nozzle 12 is arranged at the center of the liquid swirl nozzle assembly, The l...

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Abstract

The invention relates to an oxygen-enriched combustion method and an oxygen-enriched combustion device. The device comprises a shell, fuel nozzles, oxygen nozzles and air nozzles, wherein the oxygen nozzles, the air nozzles and the fuel nozzles are arranged in a concentric ring shape; the fuel nozzles are positioned in the center; the air nozzles are positioned at the periphery; the oxygen nozzles are positioned between the fuel nozzles and the air nozzles; and the fuel nozzles are spiral-flow type gas fuel nozzles, liquid fuel nozzles or gas-liquid dual-purpose fuel nozzles. The oxygen-enriched combustion method comprises the following steps of: mixing fuel, air and oxygen in the combustion device and combusting, wherein oxygen consumption is 5 to 15 percent of theoretical oxygen consumption of fuel combustion, the rest is air, and the oxygen purity is 90 to 94 percent. Due to the arrangement of the oxygen nozzle, the fuel is combusted under oxygen-enriched conditions, the combustion intensity is improved, the combustion quality is improved, and the problems of coking and black smoke at an outlet of a combustor are solved. A spiral-flow type combustor has high fuel atomization performance and the fuel is fully mixed with a combustion improver, so that the fuel combustion has high thermal efficiency.

Description

technical field [0001] The invention belongs to the technical field of combustion and relates to an oxygen-enriched combustion method and device. Background technique [0002] At present, with the operation of the West-East Gas Pipeline and the current situation of the development of the domestic energy industry, especially oil field production and logistics units, petrochemical enterprises and some factories and mines, a large number of oil burners, gas burners and oil-gas dual-purpose burners are used. , These burners all use air as a combustion aid. In actual production, due to the operation and combustion equipment, especially the fuel burner using liquid fuel, poor atomization or insufficient combustion often occurs, resulting in poor combustion effect and low thermal efficiency of the fuel. There is coking and black smoke from the chimney. Removing coking will not only increase the labor intensity of operators, but also directly affect the production operation and ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L7/00
CPCY02E20/34
Inventor 赵政权胡宗权刘凤芸孙卫国黄忠能陈忠孟杨赵习刘军杰孟兵川
Owner SOBC ENERGY SOURCES SCI & TECH
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