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Production method of desulfur denitrate dust collecting active coke

A technology of desulfurization and denitrification and production method, which is applied in the field of desulfurization and denitrification active coke, can solve the problems of poor desulfurization and denitrification effects, undeveloped mesopores, and high cost, and achieve good desulfurization and denitrification effects, developed mesopores, and low price.

Active Publication Date: 2007-01-31
长春惠工净化工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activated carbon of the above production method can desulfurize and denitrify, there are still disadvantages such as small specific surface area, low strength, underdeveloped mesopores, and poor desulfurization and denitrification effects. Due to different methods, the raw materials used are also different, and each has its own advantages and disadvantages.
For example, German BF Company uses lignite plus binder, which is used in dry desulfurization device of thermal power plant after carbonization, which can only desulfurize, but cannot remove nitrogen oxides and dust; It is mixed with the binder under heating conditions, and after forming, it is dry-distilled and activated to form activated carbon. The process is relatively complicated; the method for preparing activated carbon disclosed in CN1202004C uses various gases such as ammonia, hydrogen, and ethylene in the oxidation-reduction process, which means that the cost is high. , and the process is complicated; CN1120746C discloses the activated coke preparation method, the activation time is 5-6 hours, and the strength of the prepared activated carbon is low; CN1089034C discloses a flue gas desulfurization catalyst and its application method, which only solves the desulfurization problem; CN1806910A The disclosed preparation method of activated coke for flue gas treatment needs to use KOH, KCl, NaOH, urea, etc., and grind the asphalt into 180-400 mesh at normal temperature, which is technically difficult and difficult to realize; CN1212887C discloses a simultaneous desulfurization Denitrification activated carbon and its application method have complicated process and high cost; a method for preparing activated carbon disclosed in CN1491886A needs to be reduced under the conditions of ammonia, hydrogen, methylamine, ethylene or acetylene, and the process conditions are complicated and the cost is high; CN1200876C discloses the production The method of desulfurization and denitrification activated carbon is to mix bituminous coal with coking coal, grind it, then mix it with coal tar, form it into strip particles through liquefaction, and make activated carbon through three stages of carbonization, activation and oxidation. The activated carbon prepared by this method is also There are disadvantages of high cost and small stacking weight

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Activated coke for desulfurization, denitrification and dust removal is made of lignite, coking coal, coal tar and water-based emulsifier, and its weight percentage is:

[0017] Coal powder 70%, tar 25%, water-based emulsifier 5%

[0018] Above-mentioned pulverized coal is made by lignite and coking coal, and its weight percentage is:

[0019] Lignite 70% Coking coal 30%

[0020] Above-mentioned water-based emulsifier is made by water and any kind of anionic surfactant, and its weight percentage is:

[0021] Water 95% Sodium Dodecyl Benzene Sulfonate, Potassium Dodecyl Phosphate 5%

[0022] The preparation method of above-mentioned active coke comprises the following steps:

[0023] a, firstly crush lignite and coking coal into coal lumps with a particle size less than 15mm, then mix 70% lignite and 30% coking coal by weight percentage, and then grind it into pulverized coal below 300 mesh;

[0024] b. Take 70% coal powder, 25% coal tar and 5% water-based emulsifier...

Embodiment 2

[0029] Activated coke for desulfurization, denitrification and dust removal is made of lignite, coking coal, coal tar and water-based emulsifier, and its weight percentage is:

[0030] Coal powder 77%, tar 20%, water-based emulsifier 3%

[0031] Above-mentioned pulverized coal is made by lignite and coke powder, and its weight percentage is:

[0032] Lignite 80% Coking coal 20%

[0033] Above-mentioned water-based emulsifier is made by water and any amphoteric surfactant, and its weight percent is:

[0034] Water 98% N,N-Dimethyllaurylamine betaine, lauryldimethylammonium oxide 2%

[0035] The preparation method of above-mentioned active coke comprises the following steps:

[0036] a. First, brown coal and coking coal are respectively crushed into coal lumps with a particle size less than 15mm, then 80% lignite and 20% coking coal are mixed by weight percentage, and then ground into pulverized coal below 300 mesh;

[0037] b. Take 77% coal powder, 20% coal tar and 3% water...

Embodiment 3

[0042] Activated coke for desulfurization, denitrification and dust removal is made of lignite, coking coal, coal tar and water-based emulsifier, and its weight percentage is:

[0043] Coal powder 72%, tar 24%, water-based emulsifier 4%

[0044] Above-mentioned pulverized coal is made by lignite and coke powder, and its weight percentage is:

[0045] Lignite 75% Coking coal 25%

[0046] Above-mentioned water-based emulsifier is made by water and any kind of cationic surface agent, and its weight percentage is:

[0047] Water 92% Triethanolamine Oleate, Lauryl Trimethyl Ammonium Chloride or Cetyl Trimethyl Ammonium Bromide 8%

[0048] The preparation method of above-mentioned active coke comprises the following steps:

[0049] a, firstly crush lignite and coking coal into coal lumps with a particle size less than 15mm, then mix 75% lignite and 25% coking coal by weight percentage, and grind it into coal powder below 300 mesh;

[0050] b. Get 72% coal powder, 24% coal tar an...

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Abstract

The present invention relates to a method for producing desulfurization denitration dust-removing active coke by using brown coal as raw material. Said method includes the following steps: mixing brown coal and coking coal according to a certain mixing ratio, pulverizing them to obtain coal powder; adding coal tar and water base emulsifying agent to make them into coal paste; hydraulic strip-extruding to obtain strip granules, drying and charring in charring furnace, placing the above-mentioned material into activating furnace to make activation to obtain activated material, making natural oxidation so as to obtain the invented active coke.

Description

Technical field: [0001] The invention relates to a desulfurization and denitrification active coke and a production method, in particular to an active coke directly made from lignite capable of dedusting and a production process thereof. Background technique: [0002] At present, there are many activated carbon production methods used for flue gas desulfurization and denitrification. Most of the semi-coke activated carbon is chemically treated to increase the surface desulfurization and denitrification ability. Although the activated carbon of the above-mentioned production method can desulfurize and denitrify, there are still disadvantages such as small specific surface area, low strength, undeveloped mesopores, and poor desulfurization and denitrification effect. Due to different methods, the raw materials used are also different, and each has its advantages and disadvantages. For example, German BF Company uses lignite plus binder, which is used in dry desulfurization dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08B01J20/20
Inventor 陆久民傅方堃何广海
Owner 长春惠工净化工业有限公司
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