CN105854786A - Non-toxic environment-friendly flue gas adsorbent - Google Patents

Non-toxic environment-friendly flue gas adsorbent Download PDF

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Publication number
CN105854786A
CN105854786A CN201610426309.6A CN201610426309A CN105854786A CN 105854786 A CN105854786 A CN 105854786A CN 201610426309 A CN201610426309 A CN 201610426309A CN 105854786 A CN105854786 A CN 105854786A
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China
Prior art keywords
parts
flue gas
flyash
deionized
added
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CN201610426309.6A
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Chinese (zh)
Inventor
王春保
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MAANSHAN SHUNDA ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
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MAANSHAN SHUNDA ENVIRONMENT PROTECTION EQUIPMENT CO Ltd
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Priority to CN201610426309.6A priority Critical patent/CN105854786A/en
Publication of CN105854786A publication Critical patent/CN105854786A/en
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    • 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
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • 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
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
    • B01J20/0229—Compounds of Fe
    • 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
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0248—Compounds of B, Al, Ga, In, Tl
    • 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
    • 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
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/60—Heavy metals or heavy metal compounds
    • B01D2257/602—Mercury or mercury compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases

Abstract

The invention discloses a non-toxic environment-friendly flue gas adsorbent. The non-toxic environment-friendly flue gas adsorbent is prepared from, by weight, 40-50 parts of fly ash, 4-5 parts of ferric nitrate, 3-4 parts of manganese acetate, 13-15 parts of glass fibers, 5-7 parts of sodium silicate, 4-5 parts of furnace slag powder, 5-6 parts of graphite oxide, 6-7 parts of pumice powder, 0.3-0.5 part of boric acid ester coupling agent and an appropriate amount of deionized water. The prepared flue gas demercuration adsorbent has the advantages that the preparation method is simple, the raw materials are low in cost, and the demercuration effect is obvious, the raw materials are wide in source, free of toxicity, environmentally friendly and worthy of large-scale popularization.

Description

A kind of asepsis environment-protecting flue gas adsorbent
Technical field
The present invention relates to technical field of absorbent, particularly relate to a kind of asepsis environment-protecting flue gas adsorbent.
Background technology
In recent years, the metallic element that coal produces in combustion causes the concern of various circles of society, and environment can be caused the biggest impact, mercury to be exactly wherein one of poisonous metal by these metallic elements after being discharged in air.Mercury element has the character of continuous enrichment with in food chain in vivo, the nervous system of human body can be caused the injury that can not be cured for a long time, in daily industrial production, smelting industry, Chi Kuang exploitation, manufacture of cement, biomass combustion, fired coal combustion etc. all can produce a certain amount of mercury emissions in air, and wherein fire coal is the most maximum pollution sources.In order to solve the most serious coal-fired flue-gas mercury pollution problem, people are devoted to the many effective catalyst of exploitation, flue activated carbon spraying technique is a kind of ideal technology, owing to having higher adsorption effect, use in many power plant, but owing to activated carbon is expensive, limited large-scale application, especially as developing country Chinese, replace activated carbon with greater need for a kind of cost-effective adsorbent.
Flyash has a certain amount of unburned carbon, content is typically between 2% to 12%, at present, in order to control the discharge of nitrogen oxides, many coal-burning power plants use the emissions requirements that low NO meets nitrogen oxides, hypothermia and hypoxia condition in low nitrogen burning makes the phosphorus content in flyash substantially increase, and makes the phosphorus content of flyash even increase to 20% the highest.The unburned carbon of flyash has certain adsorption capacity to Elemental Mercury, replaces, with the unburned carbon in flyash, the mercury that activated carbon adsorbs in flue gas and can yet be regarded as a kind of economically viable method.Absorption and the oxidation of mercury are also had certain effect by the abundant metallic element contained in flyash.Flyash has certain adsorption capacity to pollutant, but adsorption effect is the most not ideal enough, in order to make the absorption property of flyash be improved, flyash is modified studying the emphasis being to study.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of asepsis environment-protecting flue gas adsorbent.
The present invention is achieved by the following technical solutions:
A kind of asepsis environment-protecting flue gas adsorbent, is made up of the raw material of following weight portion: flyash 40-50, ferric nitrate 4-5, manganese acetate 3-4, glass fibre 13-15, sodium metasilicate 5-7, pulverized slag 4-5, graphite oxide 5-6, ground pumice 6-7, boric acid ester coupler 0.3-0.5, deionized water are appropriate；
Described a kind of asepsis environment-protecting flue gas adsorbent, is made up of step in detail below:
(1) flyash is washed with deionized for several times, under 120 ° of C, is dried 4-5h, by the flyash nitric acid dousing 2-3h of 2 times amount after cooling, water-bath 1h in the water-bath of 60 ° of C afterwards the most in an oven, then is washed with deionized to neutrality, dry for standby；
(2) deionized water dissolving of ferric nitrate and manganese acetate mixing 3-4 times amount is stirred, again flyash prepared by step (1) is added in mixed liquor, thermal agitation is added to dry in magnetic stirring apparatus, it is then placed in drier under 120 ° of C being dried 3-4h, finally it is ground to thin, and put in Muffle furnace under 400-600 ° of C, to calcine 0.5-1h, cross 100 mesh sieves after cooling standby；
(3) wash after glass fibre being soaked 20min with the suds of 2 times amount, after drying, under 50 ° of C, soak 30-40min with the hydrochloric acid of 10%, standby after being then washed with deionized drying；
(4) glass chopped rear and pulverized slag, graphite oxide, ground pumice, boric acid ester coupler mixed grinding are uniformly dispersed, sodium metasilicate is dissolved in water and makes the solution that concentration is 40-60%, mixture is added in sodium silicate aqueous solution to be heated to 50-60 ° of C stir formation slurry, being added in slurry by modified coal ash prepared by step (2), the spray drying that stirs can be prepared by again.
nullThe invention have the advantage that fly ash grain smooth surface，The most coarse with acid oxidase rear surface，Increase specific surface area，Again after manganese and Fe2O3 doping，Reunite on its surface，Mercury is had good catalytic performance，Can be by mercury oxidation and firmly adsorb on flyash surface，And self also can re-oxidation，The activity making adsorbent keeps stable continuation to play suction-operated，Flyash is possibly together with abundant metallic element，There is in terms of the adsorption and oxidation of mercury certain advantage，The present invention also selects resistant to elevated temperatures glass fibre to be modified increasing specific surface area raising load effect，Thus play the adsorptivity of sharpest edges，The glass fibre added not only has good controlling to the fine particle in flue gas，Also there is good sulfur resistance，The pulverized slag added、Graphite oxide、Ground pumice is used in conjunction with each other，Improve the adsorptivity of adsorbent、Wear-resisting、Anticorrosive and heat resistance，It is simple that the flue gas demercuration adsorbent that the present invention prepares has preparation method、Low raw-material cost、The advantages such as demercuration effect is obvious，Raw material sources are extensive，Asepsis environment-protecting，It is worth large-scale promotion.
Detailed description of the invention
A kind of asepsis environment-protecting flue gas adsorbent, is made up of the raw material of following weight portion: flyash 40, ferric nitrate 4, manganese acetate 3, glass fibre 13, sodium metasilicate 5, pulverized slag 4, graphite oxide 5, ground pumice 6, boric acid ester coupler 0.3, deionized water are appropriate；
Described a kind of asepsis environment-protecting flue gas adsorbent, is made up of step in detail below:
(1) flyash is washed with deionized for several times, under 120 ° of C, is dried 4h, by the flyash nitric acid dousing 2h of 2 times amount after cooling, water-bath 1h in the water-bath of 60 ° of C afterwards the most in an oven, then is washed with deionized to neutrality, dry for standby；
(2) ferric nitrate and manganese acetate mixing are stirred with the deionized water dissolving of 3 times amount, again flyash prepared by step (1) is added in mixed liquor, thermal agitation is added to dry in magnetic stirring apparatus, it is then placed in drier under 120 ° of C being dried 3h, finally it is ground to thin, and put in Muffle furnace under 400 ° of C, to calcine 0.5h, cross 100 mesh sieves after cooling standby；
(3) wash after glass fibre being soaked 20min with the suds of 2 times amount, after drying, under 50 ° of C, soak 30min with the hydrochloric acid of 10%, standby after being then washed with deionized drying；
(4) glass chopped rear and pulverized slag, graphite oxide, ground pumice, boric acid ester coupler mixed grinding are uniformly dispersed, sodium metasilicate is dissolved in water and makes the solution that concentration is 40%, mixture is added in sodium silicate aqueous solution to be heated to 50 ° of C stir formation slurry, being added in slurry by modified coal ash prepared by step (2), the spray drying that stirs can be prepared by again.
The adsorbent of preparation being used for demercuration performance grading experimental provision test, simulated flue gas flow is 1L/min, import mercury concentration 3mg/ m3, air velocity is 34000 h-1Experiment condition under, the removal efficiency of mercury is up to 84%, and denitration rate is up to 39%.

Claims (2)

1. an asepsis environment-protecting flue gas adsorbent, it is characterized in that, be made up of the raw material of following weight portion: flyash 40-50, ferric nitrate 4-5, manganese acetate 3-4, glass fibre 13-15, sodium metasilicate 5-7, pulverized slag 4-5, graphite oxide 5-6, ground pumice 6-7, boric acid ester coupler 0.3-0.5, deionized water are appropriate.
A kind of asepsis environment-protecting flue gas adsorbent, it is characterised in that be made up of step in detail below:
(1) flyash is washed with deionized for several times, under 120 ° of C, is dried 4-5h, by the flyash nitric acid dousing 2-3h of 2 times amount after cooling, water-bath 1h in the water-bath of 60 ° of C afterwards the most in an oven, then is washed with deionized to neutrality, dry for standby；
(2) deionized water dissolving of ferric nitrate and manganese acetate mixing 3-4 times amount is stirred, again flyash prepared by step (1) is added in mixed liquor, thermal agitation is added to dry in magnetic stirring apparatus, it is then placed in drier under 120 ° of C being dried 3-4h, finally it is ground to thin, and put in Muffle furnace under 400-600 ° of C, to calcine 0.5-1h, cross 100 mesh sieves after cooling standby；
(3) wash after glass fibre being soaked 20min with the suds of 2 times amount, after drying, under 50 ° of C, soak 30-40min with the hydrochloric acid of 10%, standby after being then washed with deionized drying；
(4) glass chopped rear and pulverized slag, graphite oxide, ground pumice, boric acid ester coupler mixed grinding are uniformly dispersed, sodium metasilicate is dissolved in water and makes the solution that concentration is 40-60%, mixture is added in sodium silicate aqueous solution to be heated to 50-60 ° of C stir formation slurry, being added in slurry by modified coal ash prepared by step (2), the spray drying that stirs can be prepared by again.
CN201610426309.6A 2016-06-16 2016-06-16 Non-toxic environment-friendly flue gas adsorbent Withdrawn CN105854786A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1316289A (en) * 2001-01-16 2001-10-10 史汉祥 Chemical absorbent for treating waste gas containing SO2
CN102527337A (en) * 2012-03-08 2012-07-04 天津市嘉腾环保设备有限公司 Compound adsorbent grain and production method thereof
CN104888725A (en) * 2015-05-12 2015-09-09 安徽鑫昆净化设备有限公司 Adsorbent with adsorption on heavy metals and preparation method for adsorbent
CN104888726A (en) * 2015-05-20 2015-09-09 蚌埠德美过滤技术有限公司 Active carbon adsorbent with excellent dedusting sterilizing performance
CN105148861A (en) * 2015-09-01 2015-12-16 安徽省含山县天顺环保设备有限公司 Multifunctional adsorbent
CN105344309A (en) * 2015-12-01 2016-02-24 宁波诺丁汉新材料研究院有限公司 Mercury removal agent with nano laminated structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1316289A (en) * 2001-01-16 2001-10-10 史汉祥 Chemical absorbent for treating waste gas containing SO2
CN102527337A (en) * 2012-03-08 2012-07-04 天津市嘉腾环保设备有限公司 Compound adsorbent grain and production method thereof
CN104888725A (en) * 2015-05-12 2015-09-09 安徽鑫昆净化设备有限公司 Adsorbent with adsorption on heavy metals and preparation method for adsorbent
CN104888726A (en) * 2015-05-20 2015-09-09 蚌埠德美过滤技术有限公司 Active carbon adsorbent with excellent dedusting sterilizing performance
CN105148861A (en) * 2015-09-01 2015-12-16 安徽省含山县天顺环保设备有限公司 Multifunctional adsorbent
CN105344309A (en) * 2015-12-01 2016-02-24 宁波诺丁汉新材料研究院有限公司 Mercury removal agent with nano laminated structure

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Application publication date: 20160817