CN106064045A - Convenient flue gas adsorbent is polluted in a kind of removing - Google Patents
Convenient flue gas adsorbent is polluted in a kind of removing Download PDFInfo
- Publication number
- CN106064045A CN106064045A CN201610423287.8A CN201610423287A CN106064045A CN 106064045 A CN106064045 A CN 106064045A CN 201610423287 A CN201610423287 A CN 201610423287A CN 106064045 A CN106064045 A CN 106064045A
- Authority
- CN
- China
- Prior art keywords
- flyash
- deionized
- flue gas
- polluted
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
Abstract
The invention discloses a kind of removing and pollute convenient flue gas adsorbent, be made up of the raw material of following weight portion: flyash 40 50, ferric nitrate 45, manganese acetate 34, glass fibre 13 15, sodium metasilicate 57, calcium-base bentonite 56, CNT 45, magnesium aluminate spinel 34, boric acid ester coupler 0.3 0.5, deionized water are appropriate；Adsorbent effect prepared by the present invention is good, and removing pollutant is convenient, will not cause secondary pollution to environment, and service life is long, is worthy to be popularized.
Description
Technical field
The present invention relates to technical field of absorbent, particularly relate to a kind of removing and pollute convenient flue gas adsorbent.
Background technology
In recent years, the metallic element that coal produces in combustion causes the concern of various circles of society, these metallic elements
Can cause very big impact after being discharged in air to environment, mercury is exactly wherein one of poisonous metal.Mercury element has at biology
The character of constantly enrichment in internal and food chain, can cause, to the nervous system of human body, the injury that can not be cured for a long time, daily
Industrial production in, smelting industry, Chi Kuang exploitation, manufacture of cement, biomass combustion, fired coal combustion etc. all can produce a certain amount of
Mercury emissions is in air, and wherein fire coal is pollution sources maximum at present.Ask to solve day by day serious coal-fired flue-gas mercury pollution
Topic, people are devoted to the many effective catalyst of exploitation, and flue activated carbon spraying technique is a kind of ideal technology, due to
There is higher adsorption effect, all used in many power plant, but owing to activated carbon is expensive, limit large-scale
Application, especially as developing country Chinese, replaces activated carbon with greater need for a kind of cost-effective adsorbent.
Having a certain amount of unburned carbon in flyash, content is typically between 2% to 12%, at present, in order to control nitrogen oxides
Discharge, many coal-burning power plants use low NOs to meet the emissions requirements of nitrogen oxides, and the low temperature in low nitrogen burning is low
Oxygen condition makes the phosphorus content in flyash substantially increase, and makes the phosphorus content of flyash even increase to 20% even more high.Fine coal
The unburned carbon of ash has certain adsorption capacity to Elemental Mercury, replaces activated carbon with the unburned carbon in flyash and adsorbs in flue gas
Mercury can yet be regarded as a kind of economically viable method.Absorption and oxidation to mercury for the abundant metallic element containing in flyash also has
Certain effect.Flyash has certain adsorption capacity to pollutant, but adsorption effect is often not ideal enough, in order to make powder
The absorption property of coal ash is improved, and is modified studying the emphasis being to study to flyash.
Content of the invention
The object of the invention is contemplated to make up the defect of prior art, provides one removing to pollute the absorption of convenient flue gas
Agent.
The present invention is achieved by the following technical solutions:
Convenient flue gas adsorbent is polluted in a kind of removing, is made up of the raw material of following weight portion: flyash 40-50, ferric nitrate 4-
5th, manganese acetate 3-4, glass fibre 13-15, sodium metasilicate 5-7, calcium-base bentonite 5-6, CNT 4-5, magnesium aluminate spinel 3-4,
Boric acid ester coupler 0.3-0.5, deionized water are appropriate；
Convenient flue gas adsorbent is polluted in described a kind of removing, is made up of step in detail below:
(1) flyash is washed with deionized for several times, under 120 ° of C, is then dried 4-5h in an oven, by fine coal after cooling
Ash the nitric acid dousing 2-3h of 2 times amount, afterwards water-bath 1h in the water-bath of 60 ° of C, then be washed with deionized to neutrality, dry
Dry standby；
(2) deionized water dissolving of ferric nitrate and manganese acetate mixing 3-4 times amount is stirred, then prepared by step (1)
Flyash is added in mixed liquor, and in magnetic stirring apparatus, heating stirring is to dry, is then placed in drier being dried 3-under 120 ° of C
4h, is finally ground to thin, and puts into and calcine 0.5-1h in Muffle furnace under 400-600 ° of C, crosses 100 mesh sieves standby after cooling；
(3) the glass fibre suds of 2 times amount are soaked washing after 20min, soak under 50 ° of C with the hydrochloric acid of 10% after drying
30-40min, standby after being then washed with deionized drying；
(4) by glass chopped rear and calcium-base bentonite, CNT, magnesium aluminate spinel, boric acid ester coupler mixed grinding
It is 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 heating
Stirring formation slurry to 50-60 ° of C, then being added to modified coal ash prepared by step (2) in slurry, stir spraying
It is dried and can be prepared by.
The invention have the advantage that fly ash grain smooth surface, more coarse with acid oxidase rear surface, increase specific surface
Long-pending, then after manganese and Fe2O3 doping, reunite on its surface, there is to mercury good catalytic performance, can inhale by mercury oxidation and firmly
Be attached to flyash surface, and self also can re-oxidation, make the activity of adsorbent keep stable continuation to play suction-operated, powder
Coal ash, possibly together with abundant metallic element, has certain advantage in terms of the adsorption and oxidation of mercury, and the present invention also selects high temperature resistant
Glass fibre be modified increasing specific surface area and improve load effect, thus play the adsorptivity of sharpest edges, the glass of interpolation
Glass fiber not only has good controlling to the fine particle in flue gas, also has good sulfur resistance, the calcium base of interpolation
Bentonite, CNT, magnesium aluminate spinel mutually act synergistically, greatly improve adsorbent efficiency, adsorption capacity and
The characteristics such as the anti scuffing of adsorbent itself, high temperature resistant, heat endurance, adsorbent effect prepared by the present invention is good, removing dirt
Dye thing is convenient, will not cause secondary pollution to environment, and service life is long, is worthy to be popularized.
Detailed description of the invention
Convenient flue gas adsorbent is polluted in a kind of removing, is made up of the raw material of following weight portion: flyash the 40th, ferric nitrate is the 4th,
Manganese acetate the 3rd, glass fibre the 13rd, sodium metasilicate the 5th, calcium-base bentonite the 5th, CNT the 4th, magnesium aluminate spinel the 3rd, boric acid ester coupler is the 0.3rd,
Deionized water is appropriate；
Convenient flue gas adsorbent is polluted in described a kind of removing, is made up of step in detail below:
(1) flyash is washed with deionized for several times, under 120 ° of C, is then dried 4h in an oven, by flyash after cooling
It with the nitric acid dousing 2h of 2 times amount, afterwards water-bath 1h in the water-bath of 60 ° of C, then is washed with deionized to neutrality, dry standby
With；
(2) ferric nitrate and manganese acetate mixing are stirred by the deionized water dissolving of 3 times amount, then powder prepared by step (1)
Coal ash is added in mixed liquor, and in magnetic stirring apparatus, heating stirring is to dry, is then placed in drier being dried 3h under 120 ° of C,
It is finally ground to thin, and puts into Muffle furnace is calcined under 400 ° of C 0.5h, cross 100 mesh sieves after cooling standby；
(3) the glass fibre suds of 2 times amount are soaked washing after 20min, soak under 50 ° of C with the hydrochloric acid of 10% after drying
30min, standby after being then washed with deionized drying；
(4) by glass chopped rear and calcium-base bentonite, CNT, magnesium aluminate spinel, boric acid ester coupler mixed grinding
It is uniformly dispersed, sodium metasilicate is dissolved in water and makes the solution that concentration is 40%, mixture is added to sodium silicate aqueous solution is heated to
50 ° of C stir formation slurry, then are added to modified coal ash prepared by step (2) in slurry, and the spray drying that stirs is
Can prepare.
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 up to 86%, denitration rate
Up to 43%.
Claims (2)
1. convenient flue gas adsorbent is polluted in a removing, it is characterised 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, calcium-base bentonite 5-6, CNT 4-5,
Magnesium aluminate spinel 3-4, boric acid ester coupler 0.3-0.5, deionized water are appropriate.
2. convenient flue gas adsorbent is polluted in a kind of removing according to claim 1, it is characterised in that by step in detail below
Preparation is made:
(1) flyash is washed with deionized for several times, under 120 ° of C, is then dried 4-5h in an oven, by fine coal after cooling
Ash the nitric acid dousing 2-3h of 2 times amount, afterwards water-bath 1h in the water-bath of 60 ° of C, then be washed with deionized to neutrality, dry
Dry standby；
(2) deionized water dissolving of ferric nitrate and manganese acetate mixing 3-4 times amount is stirred, then prepared by step (1)
Flyash is added in mixed liquor, and in magnetic stirring apparatus, heating stirring is to dry, is then placed in drier being dried 3-under 120 ° of C
4h, is finally ground to thin, and puts into and calcine 0.5-1h in Muffle furnace under 400-600 ° of C, crosses 100 mesh sieves standby after cooling；
(3) the glass fibre suds of 2 times amount are soaked washing after 20min, soak under 50 ° of C with the hydrochloric acid of 10% after drying
30-40min, standby after being then washed with deionized drying；
(4) by glass chopped rear and calcium-base bentonite, CNT, magnesium aluminate spinel, boric acid ester coupler mixed grinding
It is 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 heating
Stirring formation slurry to 50-60 ° of C, then being added to modified coal ash prepared by step (2) in slurry, stir spraying
It is dried and can be prepared by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610423287.8A CN106064045A (en) | 2016-06-16 | 2016-06-16 | Convenient flue gas adsorbent is polluted in a kind of removing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610423287.8A CN106064045A (en) | 2016-06-16 | 2016-06-16 | Convenient flue gas adsorbent is polluted in a kind of removing |
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| Publication Number | Publication Date |
|---|---|
| CN106064045A true CN106064045A (en) | 2016-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610423287.8A Withdrawn CN106064045A (en) | 2016-06-16 | 2016-06-16 | Convenient flue gas adsorbent is polluted in a kind of removing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117563413A (en) * | 2024-01-15 | 2024-02-20 | 福建朝旭新能源科技有限公司 | Desulfurizing agent for removing hydrogen sulfide in flue gas and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566900A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Absorbent for removing mercury out of coal burning smoke and preparation method thereof |
| CN103736388A (en) * | 2013-12-12 | 2014-04-23 | 芜湖中路实业有限责任公司 | Flue gas desulfurizer modified by vinegar residues and preparation method thereof |
| CN104874375A (en) * | 2015-05-12 | 2015-09-02 | 安徽鑫昆净化设备有限公司 | Alloy casting exhaust gas adsorbent and preparation method thereof |
| 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 |
-
2016
- 2016-06-16 CN CN201610423287.8A patent/CN106064045A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566900A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Absorbent for removing mercury out of coal burning smoke and preparation method thereof |
| CN103736388A (en) * | 2013-12-12 | 2014-04-23 | 芜湖中路实业有限责任公司 | Flue gas desulfurizer modified by vinegar residues and preparation method thereof |
| CN104874375A (en) * | 2015-05-12 | 2015-09-02 | 安徽鑫昆净化设备有限公司 | Alloy casting exhaust gas adsorbent and preparation method thereof |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 李增学主编: "《矿井地质手册 地质·安全·资源卷》", 30 September 2015, 煤炭工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117563413A (en) * | 2024-01-15 | 2024-02-20 | 福建朝旭新能源科技有限公司 | Desulfurizing agent for removing hydrogen sulfide in flue gas and preparation method thereof |
| CN117563413B (en) * | 2024-01-15 | 2024-03-22 | 福建朝旭新能源科技有限公司 | Desulfurizing agent for removing hydrogen sulfide in flue gas and preparation method thereof |
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20161102 |