Process and device for purifying flue gas containing lead and cadmium by adopting sintered plate circulation adsorption method

A technology of sintered plates and cadmium flue gas, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles to achieve the effects of recycling, increasing adsorption and coagulation, and strong anti-sticking effects

Active Publication Date: 2013-12-18
内蒙古森鼎环保节能股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a process and device for purifying flue gas containing lead and cadmium by cyclic adsorption method of sintered plate. Problem, through the full analysis and judgment of the flue gas components in the smelting of lead and cadmium, the sintered plate circular adsorption method is used to purify the flue gas containing lead and cadmium to realize the treatment of the flue gas

Method used

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  • Process and device for purifying flue gas containing lead and cadmium by adopting sintered plate circulation adsorption method
  • Process and device for purifying flue gas containing lead and cadmium by adopting sintered plate circulation adsorption method
  • Process and device for purifying flue gas containing lead and cadmium by adopting sintered plate circulation adsorption method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , the equipment outer loop

[0031] 1) Select 150-mesh lead-zinc ore powder 5% fly ash 75%, diatomaceous earth 5%, talcum powder 15% mixture according to the percentage and put it into the powder material system 8 for storage;

[0032] 2) Turn on the fan in the powder system 8 to fluidize the solid powder adsorption powder through the conveying system and send it into the fluidized adsorber 3 according to the metering: 80Kg / h for pre-circulation. This cycle lasts for 5-10 minutes Afterwards, the induced draft fan 6 is turned on so that the flue gas enters the flue gas pipe 2 through the fume collecting hood 1, and enters the fluidized adsorber 3 from the outlet of the flue gas pipe 2, and the flue gas is adsorbed and condensed with the mixed adsorption powder in the fluidized adsorber 3 , collision reaction; the powder after the reaction is discharged into the emptying bin 10 through the air lock and ash discharge device at the feed port of the fluidized a...

Embodiment 2

[0035] see figure 2 , pipe outer circulation

[0036] 1) Select 300-mesh lead-zinc ore powder 5% fly ash 75%, diatomaceous earth 5% and talcum powder 15% according to the percentage and put it into the powder material system 8 for storage.

[0037] 2) Start the induced draft fan 6 of the system, so that the flue gas passes through the fume collecting hood 1, the flue 2, the reaction tube 3, and the sintered plate dust collector 5, and is discharged by the fan 6 through the chimney 7.

[0038]3) The adsorption powder is metered into the reaction tube 3 through the delivery system according to the ratio of 7:1 to the pollutants, and the powder completes the mixing and adsorption process with various pollutants in the flue gas in the reaction tube 3, Then the flue gas enters the sintered plate dust collector 5 .

[0039] 4) The flue gas is deeply and efficiently purified in the sintered plate dust collector 5, and part of the collected dust can be returned to the reaction tube...

Embodiment 3

[0043] see image 3 Circulation within the equipment

[0044] 1) Select 260-mesh lead-zinc ore powder 1% fly ash 85%, diatomaceous earth 10%, talcum powder 4% mixture according to the percentage and put it into the powder material system 8 for storage.

[0045] 2) Start the induced draft fan 6 of the system, so that the flue gas passes through the smoke collecting hood 1, the flue 2, and the sintered plate dust collector 5 respectively, and is discharged by the fan 6 through the chimney 7.

[0046] 3) According to the ratio of 10:1 to the pollutants, the adsorption powder is metered into the pipeline 2 through the conveying system. The powder completes the mixing and adsorption process with various pollutants in the flue gas in the pipeline 2, and then the flue gas The gas enters the sintered plate dust collector 5.

[0047] 4) The flue gas is deeply and efficiently purified in the sintered plate dust collector 5, and a small part of the collected dust falls on the return de...

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Abstract

The invention relates to a process and a device for purifying flue gas containing lead and cadmium by adopting a sintered plate circulation adsorption method, belonging to the technical field of environmental protection of the non-ferrous metal metallurgy industry. The process for purifying the flue gas containing lead and cadmium by adopting the sintered plate circulation adsorption method comprises the following steps of carrying out circulation fluidized adsorption by adopting powder, carrying out dust removal by filtration by virtue of a sintered plate, and combining with measures of mixing wind, dividing walls, humidifying and cooling, thus effectively removing and recycling harmful substances of lead, cadmium and the like in the smoke. By adopting the process for purifying the flue gas containing lead and cadmium by adopting the sintered plate circulation adsorption method, the effect that discharge of the harmful substances of lead, cadmium and the like is far below the national standard can be strictly guaranteed; meanwhile, the historic technical problems that a filter material is blocked, the efficiency is low and waste water treatment by a wet process technology is difficult in the traditional filtering type dust removal technology are solved, and no secondary pollution is produced in a treatment process, so that the process is suitable for development trends of environmental protection and circular economy and provides a new way for treating non-ferrous metal lead and cadmium smoke.

Description

technical field [0001] The invention relates to a technology and device for purifying flue gas containing lead and cadmium by sintering plate circulation adsorption method, in particular to purifying flue gas containing lead and cadmium by sintering plate circulation adsorption method in nonferrous metal smelting, which belongs to the environmental protection technology of nonferrous metal smelting industry field. Background technique: [0002] The production of lead and cadmium elements plays an important role in the non-ferrous industry. With the continuous development of the radiation protection industry and the electronics industry, the demand for lead and cadmium elements continues to increase, and the industry continues to develop and expand. Because lead and cadmium are a It is a highly toxic element, and the related industrial pollution has also become a social issue of environmental protection that the country and society pay attention to. [0003] Since the meltin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/64
Inventor 马克印薄强潘青史海瑞张春喜张辉张洪议孙军
Owner 内蒙古森鼎环保节能股份有限公司
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