CN109985603A - A kind of efficient low reaction heat type desulphurization denitration active carbon and preparation method thereof - Google Patents

A kind of efficient low reaction heat type desulphurization denitration active carbon and preparation method thereof Download PDF

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Publication number
CN109985603A
CN109985603A CN201910205947.9A CN201910205947A CN109985603A CN 109985603 A CN109985603 A CN 109985603A CN 201910205947 A CN201910205947 A CN 201910205947A CN 109985603 A CN109985603 A CN 109985603A
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China
Prior art keywords
active carbon
desulphurization denitration
preparation
coolant
reaction heat
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Pending
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CN201910205947.9A
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Chinese (zh)
Inventor
缪存标
占礼万
方世国
郑利
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Nanping Yuan Li Activated Carbon Co Ltd
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Nanping Yuan Li Activated Carbon Co Ltd
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Priority to CN201910205947.9A priority Critical patent/CN109985603A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/11—Clays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/304—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/404—Nitrogen oxides other than dinitrogen oxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42—Materials comprising a mixture of inorganic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character

Abstract

Present invention relates particularly to a kind of efficient low reaction heat type desulphurization denitration active carbons and preparation method thereof, belong to technical field of active carbon.Active carbon prepared by the present invention joined coolant, activating agent, each component relies primarily on carboxymethyl cellulose auxiliary granulating and forming at low temperature, after high-temperature heat treatment, carboxymethyl cellulose high temperature, which is burnt, to be lost, and active carbon, coolant, activating agent three react formation under high temperature action and are firmly chemically bound together, intensity is big；And active carbon effectively scatter by coolant, reduces the heat accumulation of adsorption reaction, can effectively conduct heat；Effective functional group is formed under activating agent high temperature simultaneously, to H2S、SO2And NOXEtc. there is excellent chemisorption effect；Therefore, the desulphurization denitration active carbon of this method preparation can efficiently and safely adsorb the H in industrial tail gas2S、SO2And NOXEtc. harmful substances, have great market application prospect.

Description

A kind of efficient low reaction heat type desulphurization denitration active carbon and preparation method thereof
Technical field
The invention belongs to technical field of active carbon, and in particular to a kind of efficient low reaction heat type desulphurization denitration active carbon and its Preparation method.
Background technique
The fuel that industrial production uses generates in combustion as contained a large amount of sulphur in coal, petroleum, natural gas A large amount of H2S、SO2And NOX, cause atmosphere pollution and generate acid rain, control H2S、SO2And NOXDischarge amount it is particularly important.Work at present Industry vent gas treatment mostly uses greatly dry method, semidry method and wet desulphurization denitration, and wherein dry desulfurization denitration mainly uses active carbon to inhale It is attached, reach efficient desulfurization off sulfide effect.Desulphurization denitration active carbon on the market has conventional activated carbon and modified activated carbon, often Rule active carbon is directly adsorbed with coal quality charcoal, only leans on the hole adsorption capacity desulphurization denitration of active carbon itself, and adsorption efficiency is low；And Modified activated carbon is conventional activated carbon load KOH or K2CO3Equal alkaline matters, the modified activated carbon is in addition to active carbon itself hole Outside the physical absorption of gap, there are also the chemisorptions of modifying agent, and adsorption effect is good, but for low with certain temperature, humidity And the industrial smoke of the component containing low ignition point easily assembles adsorption reaction heat and generates combustion in adsorption process since adsorption efficiency is excessively high It burns, there is risk.
Summary of the invention
(1) technical solution
Place, the present invention provide a kind of system of efficient low reaction heat type desulphurization denitration active carbon for overcome the deficiencies in the prior art Preparation Method, which is characterized in that the preparation method comprises the following steps:
(1), 40 ~ 70 parts of active carbons are mixed in proportion with 20 ~ 40 portions of coolants, the coolant includes kaolin, concave convex rod Soil, aluminium hydroxide；
(2), 10 ~ 20 portions of activating agents and 1 ~ 4 part of carboxymethyl cellulose mixing are added in the mixing active carbon obtained in step (1) Aqueous solution is made the active carbon of fixed shape after mediating, the activating agent includes alkali lignin, sodium lignosulfonate, the alkali lignin, The purity of sodium lignosulfonate is not less than 99%；
(3), the active carbon that fixed shape is obtained in step (2) is subjected to low temperature drying in a low temperature of not higher than 300 DEG C, then Not less than 500 DEG C at a temperature of carry out high temperature drying after obtain desulphurization denitration active carbon；
Further, the active carbon powdered activated carbon in step (1), the powdered activated carbon is chemical method or physical method One or more of mixing of charcoal.
Further, coolant as described in step (1) is powdered coolant, and the powdered coolant is kaolinite One or more of mixing of soil, attapulgite, aluminium hydroxide, the kaolin, attapulgite, aluminium hydroxide purity be not less than 98%。
Further, in step (2), the active carbon of the fixed shape includes column, spherical or cellular activity Charcoal.
Further, for low temperature drying described in step (3) between 80 DEG C ~ 300 DEG C, the low temperature drying is small to moisture In 15%；The high temperature drying is between 500 ~ 900 DEG C, and the high temperature drying heat treatment time is between 0.5 ~ 2h.
(2) beneficial effect
The beneficial effects of the present invention are: active carbon joined coolant, activating agent, and each component relies primarily on carboxylic first at low temperature Base cellulose assists granulating and forming, and after high-temperature heat treatment, carboxymethyl cellulose high temperature, which is burnt, to be lost, and active carbon, coolant, activating agent Three reacts formation under high temperature action and is firmly chemically bound together, and intensity is big；And coolant effectively will be active Charcoal scatter, and reduces the heat accumulation of adsorption reaction, can effectively conduct heat；Effective official is formed under activating agent high temperature simultaneously It can roll into a ball, to H2S、SO2And NOXEtc. there is excellent chemisorption effect；Therefore, the desulphurization denitration active carbon of this method preparation can be high Effect, the safely H in absorption industrial tail gas2S、SO2And NOXEtc. harmful substances, have great market application prospect.
Specific embodiment
It is further clearly and completely described, is shown below with reference to embodiment technical solution in the embodiment of the present invention So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Embodiment one
After 60 parts of active carbon by chemical method are mixed with 30 parts of attapulgites, 10 parts of alkali lignins are added and 2 parts of carboxymethyl celluloses are mixed After Heshui solution is mediated, 4mm cylindrical particle type active carbon is made, moisture is dried at 120 DEG C less than 15%, then 700 DEG C of heat treatments Desulphurization denitration active carbon is made in 0.5h.
Embodiment two
After 70 parts of active carbon by physical are mixed with 10 parts of kaolin, 20 parts of alkali lignins and 4 parts of carboxymethyl cellulose mixing are added After aqueous solution is mediated, 4mm cylindrical particle type active carbon is made, 80 DEG C are dried to moisture less than 10%, then 700 DEG C of heat treatment 0.5h, Desulphurization denitration active carbon is made.
Embodiment three
After 40 parts of active carbon by chemical method are mixed with 40 parts of attapulgites, 20 parts of alkali lignins are added and 1 part of carboxymethyl cellulose is mixed After Heshui solution is mediated, 4mm spherical particle type active carbon is made, 300 DEG C are dried to moisture less than 10%, then 600 DEG C of heat treatments Desulphurization denitration active carbon is made in 1h.
Example IV
After 20 parts of active carbon by chemical method, 30 parts of active carbon by physical are mixed with 30 parts of attapulgites, 10 parts of aluminium hydroxides, it is added After 10 parts of alkali lignins and 3 parts of carboxymethyl cellulose mixed aqueous solutions are mediated, 4mm cylindrical particle type active carbon, 150 DEG C of drying are made To moisture less than 10%, then 900 DEG C of heat treatment 0.5h, desulphurization denitration active carbon is made.
Embodiment five
After 50 parts of active carbon by physical are mixed with 35 parts of attapulgites, 5 parts of kaolin, 10 parts of alkali lignins and 3 parts of carboxylic first are added After base cellulose mixed aqueous solution is mediated, honeycomb type active carbon is made, 200 DEG C are dried to moisture less than 10%, then 500 DEG C of heat 2h is handled, desulphurization denitration active carbon is made.
The preferred embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these belong to this hair Bright protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (6)

1. a kind of preparation method of efficient low reaction heat type desulphurization denitration active carbon, which is characterized in that the preparation method includes Following steps:
(1), 40 ~ 70 parts of active carbons are mixed in proportion with 20 ~ 40 portions of coolants；
(2), 10 ~ 20 portions of activating agents and 1 ~ 4 part of carboxymethyl cellulose mixing are added in the mixing active carbon obtained in step (1) The active carbon of fixed shape is made in aqueous solution after mediating；
(3), the active carbon that fixed shape is obtained in step (2) is subjected to low temperature drying in a low temperature of not higher than 300 DEG C, then Not less than 500 DEG C at a temperature of carry out high temperature drying after obtain desulphurization denitration active carbon；
The coolant includes kaolin, attapulgite, aluminium hydroxide, and the activating agent includes alkali lignin, sodium lignosulfonate.
2. a kind of preparation method of efficient low reaction heat type desulphurization denitration active carbon according to claim 1, feature exist In, the active carbon powdered activated carbon in step (1), the powdered activated carbon be chemical method or physical method charcoal one kind or Several mixing.
3. a kind of preparation method of efficient low reaction heat type desulphurization denitration active carbon according to claim 1, feature exist In coolant as described in step (1) is powdered coolant, and the powdered coolant is kaolin, attapulgite, hydrogen-oxygen Change one or more of mixing of aluminium.
4. a kind of preparation method of efficient low reaction heat type desulphurization denitration active carbon according to claim 1, feature exist In in step (2), the active carbon of the fixed shape includes column, spherical or cellular active carbon.
5. a kind of preparation method of efficient low reaction heat type desulphurization denitration active carbon according to claim 1, feature exist In low temperature drying described in step (3) is between 80 DEG C ~ 300 DEG C, and the low temperature drying to moisture is less than 15%；The high temperature Drying is between 500 ~ 900 DEG C, and the high temperature drying heat treatment time is between 0.5 ~ 2h.
6. the desulphurization denitration active carbon that described in any item preparation methods obtain according to claim 1 ~ 5.
CN201910205947.9A 2019-03-19 2019-03-19 A kind of efficient low reaction heat type desulphurization denitration active carbon and preparation method thereof Pending CN109985603A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1537075A (en) * 2001-04-11 2004-10-13 米德韦斯特瓦科公司 Shaped activated carbon
CN101837231A (en) * 2010-04-23 2010-09-22 北京工业大学 Sludge-based desulfurizer and preparation method thereof
CN103495388A (en) * 2013-08-30 2014-01-08 蚌埠德美过滤技术有限公司 Modified activated carbon for low-concentration flue gas desulphurization and its preparation method
CN103521195A (en) * 2013-08-30 2014-01-22 蚌埠首创滤清器有限公司 Iron oxyhydroxide modified active carbon desulfurizer as well as preparation method thereof
CN105435739A (en) * 2014-09-28 2016-03-30 中国石化扬子石油化工有限公司 Hydrogen sulfide removal agent for normal temperature water-free environment and preparation method thereof
CN106111124A (en) * 2016-06-30 2016-11-16 上海净球环保科技有限公司 A kind of denitrating catalyst with modified activated carbon as matrix material and preparation method thereof
CN106732751A (en) * 2016-12-08 2017-05-31 盐城工学院 A kind of desulphurization denitration catalyst and preparation method thereof and application method
US20180043329A1 (en) * 2015-07-07 2018-02-15 Carbonxt, Inc. High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas
CN108159859A (en) * 2018-01-22 2018-06-15 储微微 A kind of flue gas desulfurization and denitrification device and technique

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1537075A (en) * 2001-04-11 2004-10-13 米德韦斯特瓦科公司 Shaped activated carbon
CN101837231A (en) * 2010-04-23 2010-09-22 北京工业大学 Sludge-based desulfurizer and preparation method thereof
CN103495388A (en) * 2013-08-30 2014-01-08 蚌埠德美过滤技术有限公司 Modified activated carbon for low-concentration flue gas desulphurization and its preparation method
CN103521195A (en) * 2013-08-30 2014-01-22 蚌埠首创滤清器有限公司 Iron oxyhydroxide modified active carbon desulfurizer as well as preparation method thereof
CN105435739A (en) * 2014-09-28 2016-03-30 中国石化扬子石油化工有限公司 Hydrogen sulfide removal agent for normal temperature water-free environment and preparation method thereof
US20180043329A1 (en) * 2015-07-07 2018-02-15 Carbonxt, Inc. High mechanical strength sorbent product, system, and method for controlling multiple pollutants from process gas
CN106111124A (en) * 2016-06-30 2016-11-16 上海净球环保科技有限公司 A kind of denitrating catalyst with modified activated carbon as matrix material and preparation method thereof
CN106732751A (en) * 2016-12-08 2017-05-31 盐城工学院 A kind of desulphurization denitration catalyst and preparation method thereof and application method
CN108159859A (en) * 2018-01-22 2018-06-15 储微微 A kind of flue gas desulfurization and denitrification device and technique

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