Online low-nitrogen oxygen-rich combined combustion energy-saving system

An energy-saving system and oxygen-enriched technology, applied in the direction of combustion methods, combustion equipment, and the combustion of block fuel and powder fuel, can solve the problems of increasing fuel cost and operating cost, so as to improve the adaptability of coal types and improve the adaptability Sexuality and the effect of reducing processing costs

Inactive Publication Date: 2012-10-10
SHAANXI PANLONG IND
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Problems solved by technology

However, the existing composite combustion technology cannot achieve online sorting of raw coal, online preheating, drying and grinding treatment, and online pulverization and transportation of pulverized coal combustion, which increases fuel costs and operating costs, and cannot solve energy conservation, environmental protection, and overall costs. the contradiction betwe

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  • Online low-nitrogen oxygen-rich combined combustion energy-saving system
  • Online low-nitrogen oxygen-rich combined combustion energy-saving system
  • Online low-nitrogen oxygen-rich combined combustion energy-saving system

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Embodiment Construction

[0076] Such as figure 1 As shown, the present invention includes a pretreatment integrated coal hopper installed on the chain type coal-fired boiler 5 and sending the raw coal into the chain type coal-fired boiler fire grate 6 in layers and on-line sorting the fine coal and combining the pretreatment The fine coal separated from the coal hopper is dried, transported and preheated by the drying and preheating heat exchanger 2, and the drying and preheating heat exchanger 2 is connected to the drying and preheating heat exchanger 2 to be dried. A coal fineness and separation device for finely sorting dry powdered coal and a low-nitrogen enriched coal furnace for sending high-quality coal powder refined and sorted by the coal powder fineness and separation device into the hearth of a chain-type coal-fired boiler. Oxygen pulverized coal burner 4; the drying and preheating heat exchanger 2 is arranged outside the pretreatment comprehensive coal hopper, and the pulverized coal refin...

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Abstract

The invention discloses an online low-nitrogen oxygen-rich combined combustion energy-saving system. The system comprises a pretreatment comprehensive coal hopper which is mounted on a chain-type coal firing boiler, feeds the raw coal in layers and in rows into a chain-type coal firing boiler grate and sorting powdery coal on line; a drying/preheating heat exchanger for drying and delivering the powdery coal which is sorted by the pretreatment comprehensive coal hopper and preheating the air; a coal powder fine-sorting device connected with the drying/preheating heat exchanger and used for finely sorting the powdery coal which is dried by the drying/preheating heat exchanger; and a low-nitrogen oxygen-rich coal powder combustor used for feeding the high-quality coal powder which is finelysorted by the coal powder fine-sorting device into the chain-type coal firing boiler grate. The online low-nitrogen oxygen-rich combined combustion energy-saving system has the advantages of simple structure, reasonable design and good use effect; can treat inferior coal on line to obtain the energy-saving modification technique with the optimum use effect while minimizing the minimum cost, can increase the utilization efficiency of inferior coal, reduce the waste of energy and reduce the use cost.

Description

technical field [0001] The invention relates to an energy-saving combustion system, in particular to an on-line low-nitrogen and oxygen-enriched composite combustion energy-saving system. Background technique [0002] Raw coal is one of the main energy sources in China. At present, China consumes about 3.3 billion tons of raw coal annually, and it still maintains an annual growth rate of 1%. Such a large use of raw coal has reduced the amount of raw coal (steam coal) suitable for direct combustion year by year. According to statistics, steam coal accounts for about 1 / 3 of China's total coal reserves, and low-quality coal (including coal gangue) accounts for about 2 / 3. For this reason, in order to maintain the continuous use of coal resources and ensure the sustainable development of the national economy, it is necessary to have a good low-quality coal combustion system. [0003] In recent years, clean coal technology has been mainly advocated, but clean coal technology has ...

Claims

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Application Information

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IPC IPC(8): F23C1/06F23K1/00F23K1/04F23K3/00
CPCY02E20/34
Inventor 魏大山
Owner SHAANXI PANLONG IND
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