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High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof

An oxygen-enriched air, pulverized coal boiler technology, applied in the directions of combustion ignition, combustion method, incandescent ignition, etc., to maintain long-term stable operation, easy operation, and reasonable device structure.

Inactive Publication Date: 2006-03-29
北京国力能高科技有限公司
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Problems solved by technology

Chinese and foreign patent documents show that heating air with medium-frequency induction heaters is a mature technology, but there is no precedent for igniting pulverized coal in boilers, and this technology must be developed without losing time

Method used

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  • High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof
  • High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof
  • High-temp oxygen-enriched air fire lighting method for coal powder boiler and device thereof

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Embodiment Construction

[0017] attached figure 1 It is the first implementation structure of the present invention. After the pulverized coal is carried into the pulverized coal pipe 1 by the primary air, it is divided into three parts: the small coal pulverized enters the ignition chamber 2 through the entrance 10 of the ignition chamber, that is, the high temperature oxygen-enriched chamber 3 and the The high-temperature oxygen-enriched air is mixed to form the first-level pulverized coal flow; another part of more pulverized coal enters the inner sleeve 6 of the pulverized coal pipe arranged outside the ignition chamber to form the second-level pulverized coal flow; most of the remaining pulverized coal is still in the pulverized coal The flow in the pipe forms a three-stage pulverized coal flow and finally enters the combustion chamber.

[0018] Burning chamber 7. The high-temperature oxygen-enriched chamber is connected with the oxygen-enriched gas pipe 4, and a high-temperature oxygen-enriched...

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Abstract

The present invention relates to a high-temperature oxygen-enriched air ignition method for coal powder boiler. The invented method is characterized by making coal powder carried by primary air meet with high-temp., rich oxygen heated to 300-1300 deg.C and be mixed, then igniting the coal powder. The invented ignition device is composed of coal powder pipe, oxygen-enriched gas tube, high-temp, rich oxygen heater, ignition cavity body and high-temperature rich oxygen chamber.

Description

technical field [0001] The invention relates to the field of boiler auxiliary machines. technical background [0002] The ignition, combustion-supporting, and stable combustion of pulverized coal boilers are mostly carried out by means of fuel oil, which requires a large amount of fuel oil consumption. China is a country where coal is the main energy source, and there is a relative shortage of oil and natural gas. With the rapid development of the economy, the demand for high-quality energy continues to increase, and the consumption of oil and natural gas is increasing rapidly. In 1999, China imported 43.81 million tons of oil, and in 2000 it imported 70 million tons, for which it had to pay more than 14 billion US dollars in foreign exchange. It is estimated that by 2020, my country's oil imports will reach more than 50%. Facing the increasingly severe oil supply and demand situation and the uncertainty of international oil prices, reducing oil consum...

Claims

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Application Information

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IPC IPC(8): F23Q7/00F23Q13/00F23C5/00F23C7/00
CPCY02E20/34
Inventor 王长峰刘辉王志葵刘继霞
Owner 北京国力能高科技有限公司
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