Zero discharging system for cement kiln clinker cooling machine waste gas

A cooling machine, cement kiln technology, applied in the direction of furnace cooling, furnace, lighting and heating equipment, etc., can solve the problems of high dust removal equipment requirements, high operating costs, environmental pollution, etc., to eliminate exhaust pollution, reduce energy consumption and Effect of investment, heat up

Inactive Publication Date: 2007-04-11
南京圣火环境科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Its defect is that the residual air discharged from the outlet of the dust collector has a temperature of about 150°C and a dust concentration of 50-100mg / Nm 3 , directly discharged into the atmosphere through the chimney, which not only wastes heat energy, but also pollutes the environment
At the same time, the requirements for dust removal equipment are high, the energy consumption is large, the investment of the whole system is large, and the operating cost is high.

Method used

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  • Zero discharging system for cement kiln clinker cooling machine waste gas
  • Zero discharging system for cement kiln clinker cooling machine waste gas

Examples

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Embodiment

[0016] Taking the 2500t / d clinker firing system as an example, the cement clinker with a temperature of 1400°C coming out of the rotary kiln 22 enters the grate cooler 13 and forms a material layer with a certain thickness on the grate cooling bed that moves toward the cold end. There are 12 cooling fans under the bed, the parameters of which are shown in the table below. The air blown by the cooling fan passes through the material layer and is heated while cooling the clinker. Part of the heated hot air is used as combustion air for the rotary kiln (secondary air) and calciner (tertiary air), and all or part of the hot air is used as waste heat. Boiler 16 heat sources. The hot air used as the heat source of the waste heat boiler 16 is connected to the waste heat boiler 16 at the kiln head through the pre-dust collector 15, and the waste gas exiting the waste heat boiler 16 at the kiln head and / or the grate cooler 13 is connected to the inlet of the dust collector 18 through t...

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Abstract

The present invention is zero discharging clinker cooling machine system of cement kiln has one comb type cooling machine with comb type cooling bed connected to the clinker outlet of rotary cement kiln, cooling blowers below the comb type cooling bed, hot blast outlet of the comb type cooling machine connected to the inlet of the rotary kiln, pre-duster connected to the hot blast outlet of the comb type cooling machine via pipeline, afterheat boiler connected to the outlet of the pre-duster, and duster with inlet connected through pipeline to the outlet of the afterheat boiler and outlet connected via pipeline to the inlets of partial blowers. The present invention has the advantages of no waste gas exhaust, relaxed requirement on dedusting apparatus, no environmental pollution, and raised afterheat utilization.

Description

technical field [0001] The utility model relates to a clinker cooler exhaust gas zero emission system with an exhaust gas waste heat boiler. The invention belongs to the technical field of rotary kiln cement clinker calcination and waste heat utilization. Background technique [0002] The traditional cement kiln clinker cooler exhaust gas treatment process is shown in Figure 2. Its structure is that the clinker outlet of the rotary kiln is connected to the inlet of the grate cooler through the kiln hood, and the grate cooler is equipped with a grate cooling bed. , There are several cooling fans under the grate cooling bed, the cement clinker with a temperature of up to 1400 ℃ comes out of the rotary kiln, enters the grate cooler, and forms a certain thickness of material layer on the grate cooling bed that moves to the cold end, and the cooling fan blows The incoming wind passes through the material layer and is heated while cooling the clinker. Part of the heated hot air i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B7/38F27D9/00
Inventor 孔学标
Owner 南京圣火环境科技有限公司
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