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Desulfurization and denitrification activated carbon as well as preparation method and application thereof

A technology for desulfurization, denitrification and activated carbon, applied in the field of activated carbon, can solve the problems of complex process control, high cost, difficult industrial application, etc., and achieve the effects of improving economic value, reducing preparation cost, and recycling low cost and high value.

Active Publication Date: 2021-05-25
宝武集团环境资源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]1. The process control is complicated;
[0006]2. Higher cost;
[0007]3. Difficult for industrial application

Method used

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  • Desulfurization and denitrification activated carbon as well as preparation method and application thereof
  • Desulfurization and denitrification activated carbon as well as preparation method and application thereof
  • Desulfurization and denitrification activated carbon as well as preparation method and application thereof

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Experimental program
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preparation example Construction

[0079] Such as Figure 5 As shown, the desulfurization and denitrification activated carbon provided by the first aspect of the present invention is prepared by the preparation method of the desulfurization and denitrification activated carbon of the second aspect of the present invention, which specifically includes the following steps:

[0080] (a) Grinding: According to the ratio of raw materials for desulfurization and denitrification activated carbon, raw coal, activated carbon powder, gas ash, and asphalt are mixed and pulverized to obtain mixed powder.

[0081] The specific process is: after the raw materials are proportioned according to the components of desulfurization and denitrification activated carbon, the raw coal, activated carbon powder, gas ash, and asphalt are mixed and ground to a ratio of less than 200 mesh to reach more than 95%, or to a ratio of 325 mesh Reach more than 70%; The distribution ratio of each group in the above-mentioned raw materials is as ...

Embodiment 1

[0132] Such as Figure 5 As shown, the activated carbon of the present embodiment is prepared by the following method, specifically comprising the following steps:

[0133] (1) Grinding

[0134] Proportioning is carried out according to the component of following mass percent meter to obtain raw material:

[0135] Raw coal and activated carbon powder are calculated as:

[0136] Raw coal: 70%;

[0137] Activated carbon powder: 30%;

[0138] Bitumen accounts for 5% of the total mass of raw coal and activated carbon powder;

[0139] Coal tar accounts for 7% of the total mass of raw coal and activated carbon powder;

[0140] Water accounts for 25% of the total mass of raw coal and activated carbon powder.

[0141] Among them, no gas ash is used in the above, so the raw coal, activated carbon powder, and asphalt are mixed and pulverized to 200 mesh, accounting for more than 95%, and the mixed powder is obtained;

[0142] (2) kneading: adding coal tar and water to the mixed p...

Embodiment 2

[0148] Such as Figure 6 As shown, the desulfurization and denitrification activated carbon of this embodiment is prepared by the following method, which specifically includes the following steps:

[0149](1) Grinding

[0150] Proportioning is carried out according to the component of following mass percent meter to obtain raw material:

[0151] Raw coal and activated carbon powder are calculated as:

[0152] Raw coal: 100%;

[0153] Activated carbon powder: 0%;

[0154] Gas ash accounts for 10% of raw coal mass

[0155] Bitumen accounts for 15% of the raw coal mass;

[0156] Coal tar accounts for 15% of the raw coal mass;

[0157] Water accounts for 15% of the raw coal mass.

[0158] Wherein the above-mentioned activated carbon powder is not used, and the particle size of the selected gas ash is less than 200 mesh, so the raw coal and asphalt are mixed and ground to 200 mesh and the proportion reaches more than 95%, and then the gas ash is added and mixed evenly to obt...

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Abstract

The invention discloses desulfurization and denitrification activated carbon and a preparation method and application thereof. The desulfurization and denitrification activated carbon is prepared from raw coal, asphalt, activated carbon powder, gas ash, an asphalt-based binder and water through grinding, kneading, forming, high-temperature carbonization and activation. The desulfurization and denitrification activated carbon produced by using the preparation method reaches the standard of a premium grade product specified by GB / T 30201-2013 Coaly Activated Carbon for Desulfurization and Denitration, so high-value resource utilization of two solid wastes, namely the activated carbon powder and the gas dust, is realized, the preparation cost of the activated carbon for desulfurization and denitrification of sintering flue gas is reduced, and industrial production is easy.

Description

technical field [0001] The invention belongs to activated carbon technology, and in particular relates to a desulfurization and denitrification activated carbon and its preparation method and application. The desulfurization and denitrification activated carbon is mainly used in the flue gas purification process. Background technique [0002] With the increasing environmental protection requirements in our country, there are more and more types of air pollutants to be controlled, and the emission standards are becoming increasingly strict. The demand for multi-pollutant treatment of industrial flue gas is becoming more and more urgent; sintering flue gas is the main source of air pollutant emissions in iron and steel enterprises , mainly including sulfur dioxide, nitrogen oxides, particulate matter, dioxins, heavy metals (lead, arsenic, fu, chromium, mercury, etc.), fluoride and volatile organic compounds (VOCs) and other pollutants. Due to the activated carbon flue gas puri...

Claims

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Application Information

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IPC IPC(8): C01B32/318C01B32/336C01B32/354B01J20/20B01J20/30B01D53/02
CPCC01B32/318C01B32/336C01B32/382B01J20/20B01J20/3021B01J20/3014B01J20/3007B01J20/3078B01D53/02B01D2258/0283B01D2257/302B01D2257/40Y02A50/20
Inventor 徐兵李小龙朱诚杜洪缙周茂军唐文斌俞勇梅何晓燕曹晓红
Owner 宝武集团环境资源科技有限公司
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