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Novel waste heat utilization and emission reduction process for hot air systems of chain grate machine, rotary kiln and circular cooler

A technology of rotary kiln and ring cooler, which is applied in waste heat treatment, lighting and heating equipment, furnaces, etc. It can solve the problems of large exhaust gas emissions and high desulfurization costs, so as to save energy, reduce operating costs, heat and hot air The effect of small resistance loss

Active Publication Date: 2013-01-23
NORTHERN ENG & TECH CORP MCC
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  • Description
  • Claims
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Problems solved by technology

The three streams of waste gas must be processed by desulfurization equipment, the cost of desulfurization is high, and the amount of waste gas emissions is relatively large

Method used

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  • Novel waste heat utilization and emission reduction process for hot air systems of chain grate machine, rotary kiln and circular cooler

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Embodiment Construction

[0016] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0017] like figure 1 As shown, the waste heat utilization and emission reduction system of the chain grate machine-rotary kiln-circular cooler hot air system of the present invention includes a blast drying section 3, an exhaust drying section 4, a preheating section 5, and a preheating section 6. The chain grate machine consists of the first cooling section 10 and NO.1 cooling fan 19, the second cooling section 11 and NO.2 cooling fan 18, the third cooling section 12 and NO.3 cooling fan 17 and the fourth cooling section 13 and NO.4 The annular cooler composed of cooling fan 16 is connected to the rotary kiln 7 of the chain grate machine and the annular cooler, the burner 9 arranged on the rotary kiln 7, and the main exhaust fan 22 connected to the desulfurization device 1 are set The blast drying furnace cover fan 2 between the desulfur...

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Abstract

The invention relates to a waste heat utilization and emission reduction process for hot air systems of a chain grate machine, a rotary kiln and a circular cooler. The process is characterized by comprising the following steps of: supplying hot air in a preheating zone I to a blowing drying zone to dry the material in the blowing drying zone; supplying the waste gas in a four-cooling zone to a secondary cooling zone to cool the material in the secondary cooling zone; and supplying waste gas from a three-cooling zone to a first cooling zone to cool the material in the first cooling zone. By the process, waste heat and heat of pellet hot air systems of the chain grate machine and the rotary kiln can be fully utilized, the resistance loss of hot air is low, the operating cost of a fan can be reduced, circulating waste heat utilization of hot waste gas to be exhausted is realized, energy is saved, and emission is reduced.

Description

technical field [0001] The invention relates to the technical field of chain grate machine-rotary kiln pellet hot air system, and in particular provides a chain grate machine-rotary kiln-ring cooler hot air system waste heat utilization and emission reduction system. Background technique [0002] my country's "Eleventh Five-Year Plan" development outline clearly proposes to build a resource-saving and environment-friendly society, and the daily target value of reducing energy consumption per unit of GDP by 20% and reducing the total discharge of major pollutants by 10% is included in the constraints It is also required to strengthen the prevention and control of air pollution, and strive to promote the comprehensive treatment of sulfur dioxide in coal-fired power plants, steel, non-ferrous metals, chemicals, building materials and other industries; to implement strict environmental performance assessment, environmental law enforcement responsibility system and accountabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00
Inventor 吴增福任伟郑绥旭
Owner NORTHERN ENG & TECH CORP MCC
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