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Environment-friendly treatment process for blow-in flue gas of zinc sulfide concentrate fluidized roaster

A technology of fluidized roasting and zinc sulfide concentrate, which is applied in gas treatment, climate change adaptation, climate sustainability, etc., can solve problems such as air pollution, achieve the effect of reducing air pollution and avoiding equipment damage

Inactive Publication Date: 2016-11-16
南丹县南方有色金属有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to solve the problem of subsequent treatment of flue gas generated during the furnace start-up of zinc sulfide concentrate, recover the smoke and dust in the furnace start-up flue gas, and completely solve the oil fume in the furnace start-up flue gas and SO 2 air pollution caused by

Method used

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  • Environment-friendly treatment process for blow-in flue gas of zinc sulfide concentrate fluidized roaster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The environmental protection treatment process for flue gas from the start-up of a zinc sulfide concentrate fluidized roaster is characterized in that it includes the following steps:

[0027] (1) Furnace start-up flue gas is sent to the purification process from the bypass smoke pipe through the furnace start-up fan to avoid the electric dust collector; the air volume of the furnace start-up fan is 12000m 3 / h~50580m 3 / h, flue gas dust content ~ 0.5g / m 3 , the flue gas contains SO 2 Amount ~ 0.25g / m 3 , Flue gas temperature 200 ~ 350 ℃.

[0028] (2) The flue gas from the furnace is purified and sprayed by the first-level high-efficiency scrubber and the packing cooling tower; the flow rate of the first-level high-efficiency scrubber and the packing cooling tower is 200m 3 / h~350m 3 / h.

[0029] (3) Furnace start-up flue gas avoids the electric demister and dry suction and conversion process and enters the tail gas treatment device from the bypass flue pipe.

[...

Embodiment 2

[0032] The environmental protection treatment process for flue gas from the start-up of a zinc sulfide concentrate fluidized roaster is characterized in that it includes the following steps:

[0033] (1) Furnace start-up flue gas is sent to the purification process from the bypass smoke pipe through the furnace start-up fan to avoid the electric dust collector; the air volume of the furnace start-up fan is 30000m 3 / h~150000m 3 / h, flue gas dust content ~ 0.5g / m 3 , the flue gas contains SO 2 Amount ~ 0.15g / m 3 , Flue gas temperature 200 ~ 350 ℃.

[0034] (2) The flue gas from the furnace is purified and sprayed by the first-level high-efficiency scrubber and the packing cooling tower; the flow rate of the first-level high-efficiency scrubber and the packing cooling tower is 400m 3 / h~550m 3 / h.

[0035] (3) Furnace start-up flue gas avoids the electric demister and dry suction and conversion process and enters the tail gas treatment device from the bypass flue pipe.

...

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Abstract

The invention relates to an environment-friendly treatment process for flue gas generated by a zinc sulfide concentrate fluidized roaster in the heating blow-in process. The process includes the following steps that the flue gas generated through heating blow-in of the zinc sulfide concentrate fluidized roaster enters a waste heat boiler, and after a cyclone dust collector recycles heat and removes dust, the flue gas is conveyed to a purification first-class efficient washer and a gas cooling tower for dust removal and cooling through an electric dust collector bypass flue gas pipe via a blow-in draught fan; after the flue gas is conveyed to a tail gas absorption tower for absorption of lampblack and SO2 through a sub-pipeline, the blow-in flue gas is exhausted through a tail gas chimney after reaching the standard, and atmosphere pollution is avoided and greatly reduced.

Description

【Technical field】 [0001] The invention relates to an environmental protection treatment process for flue gas of a zinc sulfide concentrate fluidized roaster 【Background technique】 [0002] The traditional method of flue gas treatment for zinc sulfide concentrate fluidized roaster is to set up a furnace fan in front of the electrostatic precipitator to take it out and evacuate it (some small fluidized roasters are equipped with a safety valve on the top of the furnace to evacuate) Or set an exhaust valve at the outlet of the waste heat boiler to empty), so as to avoid the oil fume in the flue gas from affecting the electrostatic precipitator and electrostatic demister after the flue gas from the furnace directly enters the subsequent process. Since the flue gas from the furnace contains not only oil fume, but also a small amount of dust, SO 2 , will also pollute the atmosphere after being emptied. 【Content of invention】 [0003] In view of the deficiencies in the prior ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00B01D47/14B01D53/78B01D53/50
CPCB01D47/00B01D47/14B01D53/50B01D53/78B01D2251/604B01D2258/025Y02A50/2351
Inventor 周南方千文建李书楷
Owner 南丹县南方有色金属有限责任公司
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