CN105903429A - Adsorbent for removing mercury in smoke - Google Patents
Adsorbent for removing mercury in smoke Download PDFInfo
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- CN105903429A CN105903429A CN201610426310.9A CN201610426310A CN105903429A CN 105903429 A CN105903429 A CN 105903429A CN 201610426310 A CN201610426310 A CN 201610426310A CN 105903429 A CN105903429 A CN 105903429A
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- flyash
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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
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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
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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
- B01J20/0203—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
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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
- B01J20/0203—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
- B01J20/0274—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 characterised by the type of anion
- B01J20/0296—Nitrates of compounds other than those provided for in B01J20/04
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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
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
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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
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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
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- B01J20/22—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
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- 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
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an adsorbent for removing mercury in smoke. The adsorbent is prepared from, by weight, 40-50 parts of coal 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, 6-7 parts of rectorite, 4-5 parts of magnesium oxide, 3-4 parts of urea, 0.3-0.5 part of boric acid ester coupling agent and a proper amount of deionized water. The preparation process of the prepared adsorbent is simple and convenient to operate, the adopted raw materials are low in cost, pollution of stacked coal ash to the environment and land is eliminated, and rational utilization of resources is achieved.
Description
Technical field
The present invention relates to technical field of absorbent, particularly relate to a kind of adsorbent removing mercury in flue gas.
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, hydrargyrum 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 commercial 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 polluter.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 absorbability to Elemental Mercury, replaces, with the unburned carbon in flyash, the hydrargyrum that activated carbon adsorbs in flue gas and can yet be regarded as a kind of economically viable method.Absorption and the oxidation of hydrargyrum are also had certain effect by the abundant metallic element contained in flyash.Flyash has certain absorbability 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 adsorbent removing mercury in flue gas.
The present invention is achieved by the following technical solutions:
A kind of adsorbent removing mercury in flue gas, 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 silicate 5-7, rectorite 6-7, magnesium oxide 4-5, carbamide 3-4, boric acid ester coupler 0.3-0.5, deionized water are appropriate；
Described a kind of adsorbent removing mercury in flue gas, 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, in magnetic stirring apparatus, heated and stirred is to dry, it is then placed in exsiccator 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 rectorite, magnesium oxide, carbamide, boric acid ester coupler mixed grinding are uniformly dispersed, sodium silicate 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，Hydrargyrum is had good catalytic performance，Can be by mercury oxidation and firmly adsorb on flyash surface，And self also can reoxidation，The activity making adsorbent keeps stable continuation to play adsorption，Flyash is possibly together with abundant metallic element，There is in terms of the adsorption and oxidation of hydrargyrum 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 rectorite added、Magnesium oxide、Carbamide cooperates，Substantially increase the adsorption capacity of adsorbent、Adsorption efficiency and high-temperature stability，Improve the quality stability of adsorbent，Adsorbent manufacturing process prepared by the present invention is simple、Easy to operate，Use cost of material is relatively low，Solve the flyash of accumulation to environment and the pollution in soil，Realize the rational utilization of resource.
Detailed description of the invention
A kind of adsorbent removing mercury in flue gas, is made up of the raw material of following weight portion: flyash 40, ferric nitrate 4, manganese acetate 3, glass fibre 13, sodium silicate 5, rectorite 6, magnesium oxide 4, carbamide 3, boric acid ester coupler 0.3, deionized water are appropriate；
Described a kind of adsorbent removing mercury in flue gas, 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, in magnetic stirring apparatus, heated and stirred is to dry, it is then placed in exsiccator 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 rectorite, magnesium oxide, carbamide, boric acid ester coupler mixed grinding are uniformly dispersed, sodium silicate 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 hydrargyrum is up to 87%, and denitration rate is up to 33%.
Claims (2)
1. the adsorbent removing mercury in flue gas, 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 silicate 5-7, rectorite 6-7, magnesium oxide 4-5, carbamide 3-4, boric acid ester coupler 0.3-0.5, deionized water are appropriate.
A kind of adsorbent removing mercury in flue gas, 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, in magnetic stirring apparatus, heated and stirred is to dry, it is then placed in exsiccator 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 rectorite, magnesium oxide, carbamide, boric acid ester coupler mixed grinding are uniformly dispersed, sodium silicate 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610426310.9A CN105903429A (en) | 2016-06-16 | 2016-06-16 | Adsorbent for removing mercury in smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610426310.9A CN105903429A (en) | 2016-06-16 | 2016-06-16 | Adsorbent for removing mercury in smoke |
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| CN105903429A true CN105903429A (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610426310.9A Pending CN105903429A (en) | 2016-06-16 | 2016-06-16 | Adsorbent for removing mercury in smoke |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272567A (en) * | 2013-05-16 | 2013-09-04 | 马玉山 | Adsorbent for removing mercury in smoke gas and preparation method thereof |
| CN103525502A (en) * | 2013-09-30 | 2014-01-22 | 南京师范大学 | Coal-fired power plant boiler biomass reburning denitration agent and preparation method thereof |
| CN104841398A (en) * | 2015-04-22 | 2015-08-19 | 马鞍山市顺达环保设备有限公司 | Indoor formaldehyde-removal adsorbent and preparation method thereof |
| CN105120982A (en) * | 2013-02-14 | 2015-12-02 | 卡尔冈碳素公司 | Enhanced sorbent formulation for removal of mercury from flue gas |
| CN105148874A (en) * | 2015-09-01 | 2015-12-16 | 安徽省含山县天顺环保设备有限公司 | Composite porous flue gas adsorbent |
-
2016
- 2016-06-16 CN CN201610426310.9A patent/CN105903429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105120982A (en) * | 2013-02-14 | 2015-12-02 | 卡尔冈碳素公司 | Enhanced sorbent formulation for removal of mercury from flue gas |
| CN103272567A (en) * | 2013-05-16 | 2013-09-04 | 马玉山 | Adsorbent for removing mercury in smoke gas and preparation method thereof |
| CN103525502A (en) * | 2013-09-30 | 2014-01-22 | 南京师范大学 | Coal-fired power plant boiler biomass reburning denitration agent and preparation method thereof |
| CN104841398A (en) * | 2015-04-22 | 2015-08-19 | 马鞍山市顺达环保设备有限公司 | Indoor formaldehyde-removal adsorbent and preparation method thereof |
| CN105148874A (en) * | 2015-09-01 | 2015-12-16 | 安徽省含山县天顺环保设备有限公司 | Composite porous flue gas adsorbent |
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Application publication date: 20160831 |