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Dry desulfurization agent and preparation method thereof

A dry desulfurization and catalyst technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of air pollution, acid rain, low utilization rate, etc., so as to overcome the low utilization rate and improve the desulfurization reaction rate. , the effect of good performance

Pending Publication Date: 2020-11-24
菏泽万清源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of hazardous waste treatment, a large amount of waste gas will be produced. The waste gas contains a large amount of sulfur dioxide. If it is directly discharged into the atmosphere, it will cause serious pollution to the atmosphere, cause acid rain, pollute the surrounding soil and water sources, and induce various diseases. Therefore It is necessary to desulfurize the flue gas. The common treatment methods include dry method, wet method and dry-wet combined treatment. Among them, the dry method has higher desulfurization efficiency and usually does not produce waste liquid, but it uses a large amount of limestone as Desulfurizer, eventually producing a large amount of hazardous waste
[0003] Due to the poor surface properties of limestone, the utilization rate in the desulfurization process is not high, so the hazardous waste generated is a mixture of slaked lime and calcium sulfate, which cannot be recycled, and at the same time cannot be directly discharged, which is troublesome to deal with and increases the cost.

Method used

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  • Dry desulfurization agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of modified nano-calcium carbonate:

[0028] Weigh 100 parts of nano-calcium carbonate and 5 parts of sodium dodecylsulfonate respectively, put them into a kneader after mixing, keep the stirring speed at 10r / min, kneading pressure at 0.2MPa, and knead and stir for 0.5h to obtain modified nano-calcium calcium carbonate.

[0029] Weigh 0.1 part of nano-iron oxide and 0.1 part of activated carbon, put them into the mixer respectively, and stir for 30 minutes at a rotating speed of 50r / min to obtain the first mixture, mix the first mixture with modified nano-calcium carbonate and put it into Stir in a mixer for 2 hours at a speed of 50 r / min to obtain a dry desulfurizer.

Embodiment 2

[0031] Preparation of modified nano-calcium carbonate:

[0032] Weigh 100 parts of nano-calcium carbonate and 20 parts of sodium stearate respectively, mix them and put them into a kneader, keep the stirring speed at 30r / min, the kneading pressure at 0.5MPa, and knead and stir for 1h to obtain the modified nano-calcium carbonate.

[0033] Weigh 1 part of nano-zinc oxide and 1 part of activated carbon, put them into the mixer respectively, and stir for 60 minutes at a speed of 100r / min to obtain the first mixture, mix the first mixture with modified nano-calcium carbonate and put it into Stir in a mixer for 4 hours at a speed of 100 r / min to obtain a dry desulfurizer.

Embodiment 3

[0035] Preparation of modified nano-calcium carbonate:

[0036] Weigh 100 parts of nano-calcium carbonate and 10 parts of sodium lignosulfonate respectively, mix them and put them into a kneader, keep the stirring speed at 20r / min, the kneading pressure at 0.3MPa, and knead and stir for 40min to obtain modified nano-calcium carbonate.

[0037] Weigh 0.5 parts of nano-manganese dioxide and 0.5 parts of activated carbon, put them into the mixer respectively, and stir for 40 minutes at a speed of 80r / min to obtain the first mixture, mix the first mixture with modified nano-calcium carbonate and put into Put it into a mixer, and stir it for 3 hours at a speed of 80r / min to obtain a dry desulfurizer.

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Abstract

The present invention provides a dry desulfurization agent and a preparation method thereof. The dry desulfurization agent comprises the following components in parts by weight: 90-95 parts of modified nano calcium carbonate, 0.1-1 part of a catalyst and 0.1-1 part of activated carbon. A surfactant is used to modify nano calcium carbonate to obtain the modified nano calcium carbonate. The catalystis loaded on the activated carbon by pre-mixing the catalyst and activated carbon, and the catalyst-loaded activated carbon and nano calcium carbonate are mixed to obtain the dry desulfurization agent. The dry desulfurization agent can greatly improve a desulfurization rate, at the same time, has recyclability and reduces cost of a hazardous waste treatment.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a dry desulfurizer and a preparation method thereof. Background technique [0002] In the process of hazardous waste treatment, a large amount of waste gas will be produced. The waste gas contains a large amount of sulfur dioxide. If it is directly discharged into the atmosphere, it will cause serious pollution to the atmosphere, cause acid rain, pollute the surrounding soil and water sources, and induce various diseases. Therefore It is necessary to desulfurize the flue gas. The common treatment methods include dry method, wet method and dry-wet combined treatment. Among them, the dry method has higher desulfurization efficiency and usually does not produce waste liquid, but it uses a large amount of limestone as Desulfurization agent will eventually produce a large amount of hazardous waste. [0003] Due to the poor surface properties of limestone, the utilization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/50
CPCB01D53/8609B01D2258/0283B01D2255/702B01D2251/404B01D2251/606
Inventor 邹友国王腾张清东陈辉宇王欣腾飞刘文明
Owner 菏泽万清源环保科技有限公司
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