CN105731451A - Method for modifying petroleum-coke-based activated carbon and application of activated carbon - Google Patents
Method for modifying petroleum-coke-based activated carbon and application of activated carbon Download PDFInfo
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- CN105731451A CN105731451A CN201610087434.9A CN201610087434A CN105731451A CN 105731451 A CN105731451 A CN 105731451A CN 201610087434 A CN201610087434 A CN 201610087434A CN 105731451 A CN105731451 A CN 105731451A
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- 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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- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
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Abstract
The invention discloses a method for modifying petroleum-coke-based activated carbon.The dried petroleum-coke-based activated carbon is dipped in a halide salt solution for treatment, and after liquid is filtered, the product is placed in a drying oven at the temperature of 100 DEG C to 120 DEG C to be dried for 10 h or above.The concentration of the halide salt solution ranges from 0.002 mol/L to 0.300 mol/L.The weight ratio of halide salt to the petroleum-coke-based activated carbon is (0.01-0.15):1.The petroleum-coke-based activated carbon is adopted as a raw material, chemical activating modification is carried out in a salt solution dip treatment mode, the property and structure of the prepared activated carbon material are regulated and controlled, and the activated carbon material developed in pore, beneficial to mercury adsorption and rich in surface functional group is obtained, and can be used as demercuration adsorbent.A demercuration experiment is carried out under the condition of simulating flue gas composition, and the removal rate is high and can reach 90% or above.
Description
Technical field
The invention belongs to atmosphere pollution control field, relate generally to method of modifying and the application thereof of a kind of petroleum coke matrix activated carbon.
Background technology
China is as main coal production and country of consumption, it has also become the country that heavy metal Hg discharge capacity is maximum.In recent years, world's every country and area are successively promulgated and have formulated corresponding laws and rules, the increasingly stringent to mercury in flue gas emission control.According to up-to-date " fossil-fuel power plant atmospheric pollutant emission standard (GB 13223-2011) " and " emission standard of air pollutants for boilers (GB 13271-2014) ", it is 0.03mg/m that China will perform the concentration of emission limit value of coal-burning power plant's mercury and mercuric compounds3, coal-burned industrial boiler mercury and mercuric compounds emission limit is 0.05mg/m3。
Hydrargyrum almost all in coal combustion process is volatilized and is entered flue gas.Mercury In Coal Combustion Flue Gas mainly exists with following three kinds of forms: elemental mercury (Hg0), oxidation state hydrargyrum (Hg2+) and particle mercury (Hgp).Oxidation state hydrargyrum (Hg2+) and particle mercury (Hgp) can be removed by wet desulphurization device and dust arrester respectively, and elemental mercury (Hg0) because its high volatility and low water solublity are difficult to be captured.Therefore, emphasis and the difficult point of flue gas demercuration is to elemental mercury (Hg0) removing.
At present, Hg is controlled0The method of discharge mainly include adsorbent, photochemical oxidation, SCR (SCR) and utilize existing pollution control device etc..Hydrargyrum adsorption technology is to apply demercuration technology after wider burning.In wide variety of sorbent material, material with carbon element is confirmed it is the most promising mercury removal material by many scholars, and has been applied to exhaust gas processing device.Absorbent charcoal material has huge specific surface area and abundant surface functional group it is considered to be one of maximally effective mercury absorbent in coal-fired flue-gas because of it.But activated carbon cost is high, its range of application certainly will be limited, therefore Activated Carbon Production raw material cheap and easy to get need to be found, prepare the activated carbon of high absorption property, reduce the use cost of activated carbon.
Petroleum coke is as the side-product of oil refining process, it is crude oil through distillation by after separating of oil for weight matter, the most delayed coking of mink cell focus is transformed, and has that carbon containing is high, sulfur-bearing high, volatile matter is low, ash is low, calorific value high, is the raw material preferably preparing activated carbon.
Summary of the invention
To achieve these goals, the present invention provides the method for modifying of a kind of petroleum coke matrix activated carbon, uses the petroleum coke matrix activated carbon of halide salt solution impregnation process drying, after filtered solution, places and is dried more than 10h in 100-120 DEG C of baking oven.
As preferred technical scheme, the concentration of described halide salt solution is 0.002～0.300mol/L；Described halide salt is 0.01～0.15:1 with the weight ratio of described petroleum coke matrix activated carbon.
As preferred technical scheme, described halide salt is at least one in potassium iodide, potassium bromide, potassium chloride, ammonium bromide, ammonium chloride, calcium chloride, manganese chloride.
Another object of the present invention is the activated carbon providing above-mentioned method of modifying to obtain.
As preferred technical scheme, the BET specific surface area of described activated carbon is 700～1200m2/g。
Still a further object of the present invention is the application providing above-mentioned activated carbon as adsorbent.
As preferred technical scheme, described adsorbent is used for flue gas demercuration.
A further object of the present invention is to provide the preparation method of above-mentioned petroleum coke matrix activated carbon, comprises the following steps:
(1) pretreatment: be not less than the petroleum coke of 3% as raw material with sulfur content, crush and screen to 60～100 mesh, clean, dry；
(2) activation: with retort for activation device, under the conditions of nitrogen atmosphere and activation temperature are 600～800 DEG C, mixes alkali and petroleum coke and activates, and the mass ratio of alkali and petroleum coke is 1:1, activates more than 60min, and is cooled to room temperature in a nitrogen atmosphere.
As preferred technical scheme, described alkali is potassium hydroxide and/or sodium hydroxide.
Beneficial effects of the present invention:
The invention provides the method for modifying of a kind of petroleum coke matrix activated carbon.With petroleum coke matrix activated carbon as raw material, by the way of saline solution impregnation process, carry out chemical activation modification, the character of the absorbent charcoal material prepared by regulation and control and structure, obtain the absorbent charcoal material that flourishing and beneficially Adsorption of Mercury the surface functional group of hole is abundant, can be as demercuration adsorbent.Under conditions of simulated flue gas forms, carry out demercuration experiment, have higher removal efficiency, can reach more than 90%.The present invention have raw material sources extensively, effectively utilize oil refining by-product, production cost is low, demercuration efficiency high, it is adaptable to the improvement of the field such as coal fired power plant and waste incineration smoke mercury emission.It is possible not only to realize the reduction of discharging of mercury pollution, and can efficiently utilize petroleum coke with scale, improve petroleum coke and be worth, there is distinct economic, environmental benefit and social benefit, there is preferable prospects for commercial application.
Detailed description of the invention
Following non-limiting example can make those of ordinary skill in the art that the present invention is more fully understood, but limits the present invention never in any form.
The hydrargyrum sampling analysis test system of the present invention uses LumexRA-915M type mercury vapourmeter, the zeeman atomic absorption (ZAAS-HFM) of application high frequency modulated polarized light, based on the mercury atom steam principle of absorption to 254nm ejection values line, carry out gaseous mercury detection analysis and (meet US EPA Method 30B, US EPA Method 7473, US EPA Method 1631, EN 1438, EN 13806, GB7468-87)；Experiment uses the hydrargyrum osmos tube of VICI Metronics company as hydrargyrum source, and the pipeline of all mercury vapour processes uses polyfluortetraethylene pipe, to reduce nonvalent mercury absorption in pipeline.The nonvalent mercury in atmosphere can only be detected, after detection reaction in atmosphere during mercuric amount, it is necessary to use hydrargyrum conversion system to detect after bivalent mercury is converted into nonvalent mercury due to hydrargyrum detector.Conversion system is by SnCl2Solution (having strong reducing property, bivalent mercury can be converted into nonvalent mercury), NaOH solution (absorb and dissolve SnCl2The concentrated hydrochloric acid added) and ice bath (moisture that condensation is taken out of by solution) composition.Discharged by fume hood again after being passed through activated carbon absorption bottle by the tail gas after hydrargyrum detector, it is to avoid mercury vapour directly discharges and pollutes.
Total tolerance of system is 1L/min, and Balance Air is N2.Wherein 0-12%CO2, 0-10%O2, 0-400ppm SO2, 0-200ppm NO, 0-50ppm HCl, the concentration of entrance mercury vapour is 50 ± 5 μ g/m3, adsorbent amount 0.1g.
Table 1 is simulated coal-fired flue-gas and is become to be grouped into
| Smoke components | Ratio |
| CO2 | 0 12% |
| O2 | 0 10% |
| N2 | Balance Air |
| SO2 | 0‐400ppm |
| NO | 0‐200ppm |
| HCl | 0‐50ppm |
| Hg | 45‐55μg/m3 |
Comparative example 1 petroleum coke demercuration
Petroleum coke (petroleum coke sulfur content 3%-10%), its specific surface is minimum, only 2m2/ g, is applied to demercuration: at basic smoke components (84%N2, 5%O2), to test at 80 DEG C, its demercuration efficiency only has 2%.
Comparative example 2 alkali: petroleum coke=3:1 activation
Take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) to be smashed and be sized to 80-100 mesh, standby with drying 24h at 110 DEG C after deionized water washing dust.
Take the good 2g petroleum coke of pretreatment and 6gKOH powder (alkali: petroleum coke=3:1) mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture content absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 800 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.Being placed by the filter cake obtained and dry 24h in 110 DEG C of baking ovens, obtain petroleum coke matrix activated carbon, BET specific surface area reaches 1540 ± 10m2/g。
Petroleum coke matrix activated carbon is carried out demercuration performance test, at basic smoke components (84%N2, 5%O2), carrying out demercuration reaction at 80 DEG C, demercuration efficiency only has 5%.
Comparative example 3 alkali: petroleum coke=3:1 activation+modified
Take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) to be smashed and be sized to 80-100 mesh, standby with drying 24h at 110 DEG C after deionized water washing dust.
Take the good 2g petroleum coke of pretreatment and 6gKOH powder (alkali: petroleum coke=3:1) mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture content absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 800 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.Being placed by the filter cake obtained and dry 24h in 110 DEG C of baking ovens, obtain petroleum coke matrix activated carbon, BET specific surface area reaches 1540 ± 10m2/g。
Weigh 1g initial activity charcoal, and 0.03g potassium iodide powder joins in the deionized water of 20ml, at room temperature magnetic agitation 18h, after filtering off liquid, dries 10h, obtain modified petroleum coke matrix activated carbon in 110 DEG C of baking ovens.
Modified petroleum coke matrix activated carbon is carried out demercuration performance test, at basic smoke components (84%N2, 5%O2), carrying out demercuration reaction at 60 DEG C, demercuration efficiency reaches 36.3%.
Embodiment 1 alkali: petroleum coke=1:1 activation
Take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) to be smashed and be sized to 80-100 mesh, standby with drying 24h at 110 DEG C after deionized water washing dust.Take the good 2g petroleum coke of pretreatment and 2gKOH powder mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture content absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.Being placed by the filter cake obtained and dry 24h in 110 DEG C of baking ovens, obtain petroleum coke matrix activated carbon, BET specific surface reaches 810 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), carrying out demercuration reaction at 80 DEG C, demercuration efficiency is 35%.
Embodiment 2 activates+modification
Activation: take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) and is smashed and be sized to 80-100 mesh, with after deionized water washing dust at 110 DEG C drying 24h standby.Take the good 2g petroleum coke of pretreatment and 2g KOH powder mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.The filter cake obtained is placed 110 DEG C of baking ovens are dried 24h, obtain petroleum coke matrix activated carbon.
Modified: to weigh 1g petroleum coke matrix activated carbon and 0.01g potassium iodide powder joins in the deionized water of 20ml, at room temperature magnetic agitation 18h, obtaining modified petroleum coke matrix activated carbon demercuration adsorbent after drying 10h in 110 DEG C of baking ovens after filtering off liquid, BET specific surface reaches 810 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), at 80 DEG C, the demercuration efficiency of 3h is 37%.
Embodiment 3 activates+modification
Activation: take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) and is smashed and be sized to 80-100 mesh, with after deionized water washing dust at 110 DEG C drying 24h standby.Take the good 2g petroleum coke of pretreatment and 2g KOH powder mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.The filter cake obtained is placed 110 DEG C of baking ovens are dried 24h, obtain petroleum coke matrix activated carbon.
Modified: to weigh 1g petroleum coke matrix activated carbon and 0.15g potassium iodide powder joins in the deionized water of 20ml, at room temperature magnetic agitation 18h, obtaining modified petroleum coke matrix activated carbon demercuration adsorbent after drying 10h in 110 DEG C of baking ovens after filtering off liquid, BET specific surface reaches 750 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), at 80 DEG C, the demercuration efficiency of 3h is 60%.
Embodiment 4 activates+modification
Activation: take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) and is smashed and be sized to 80-100 mesh, with after deionized water washing dust at 110 DEG C drying 24h standby.Take the good 2g petroleum coke of pretreatment and 2g KOH powder mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.The filter cake obtained is placed 110 DEG C of baking ovens are dried 24h, obtain petroleum coke matrix activated carbon.
Modified: to weigh 1g petroleum coke matrix activated carbon and 0.05g potassium iodide powder joins in the deionized water of 20ml, at room temperature magnetic agitation 18h, obtaining modified petroleum coke matrix activated carbon demercuration adsorbent after drying 10h in 110 DEG C of baking ovens after filtering off liquid, BET specific surface reaches 760 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), at 80 DEG C, the demercuration efficiency of 3h is 82.5%.
Embodiment 5 activates+modification
Activation: take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) and is smashed and be sized to 80-100 mesh, with after deionized water washing dust at 110 DEG C drying 24h standby.Take the good 2g petroleum coke of pretreatment and 2g KOH powder mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.The filter cake obtained is placed 110 DEG C of baking ovens are dried 24h, obtain petroleum coke matrix activated carbon.
Modified: to weigh 1g petroleum coke matrix activated carbon, with in the deionized water that 0.03g potassium iodide powder joins 20ml, at room temperature magnetic agitation 18h, obtains modified petroleum coke matrix activated carbon demercuration adsorbent after drying 10h after filtering off liquid in 110 DEG C of baking ovens, and BET specific surface area reaches 800 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), at a temperature of 40,80 and 120 DEG C, the demercuration efficiency of 3h respectively reaches 82.5%, 91% and 53%.Smoke components (84%N2, 5%O2With 20ppm HCl), within the temperature range of 40-150 DEG C, the demercuration efficiency of 3h all can maintain 100%.At smoke components (84%N2, 5%O2With 200ppm NO) under, carrying out demercuration reaction at 80 DEG C, 3h demercuration efficiency reaches 97%.
Embodiment 6 activates+modification
Activation: take high sulfur petroleum coke (petroleum coke sulfur content 8wt.%) and is smashed and be sized to 80-100 mesh, with after deionized water washing dust at 110 DEG C drying 24h standby.Take the good 2g KOH powder of pretreatment and 2g petroleum coke mechanical mixture uniformly after, it is placed in ceramic crucible, crucible is transferred in retort, carrying out the activation that heats up in a nitrogen atmosphere, nitrogen flow rate is 150ml/min, stops 30min after room temperature rises to 110 DEG C, the moisture absorbed when removing mechanical mixture, then heat to 600 DEG C of pre-activate 60min, then be warming up to 700 DEG C of activation 60min, omnidistance 8 DEG C/min of heating rate.It is down to room temperature under nitrogen protection from retort, takes out crucible, be transferred to sample in crucible, equipped with the beaker of deionized water soaks more than 2h, then carry out sucking filtration washing, be neutral to filtrate.The filter cake obtained is placed 110 DEG C of baking ovens are dried 24h, obtain petroleum coke matrix activated carbon.
Modified: to weigh 1g petroleum coke matrix activated carbon, 0.05g potassium bromide powder joins in the deionized water of 20ml, at room temperature magnetic agitation 18h, obtains modified petroleum coke matrix activated carbon demercuration adsorbent after drying 10h after filtering off liquid in 110 DEG C of baking ovens, and BET specific surface area reaches 800 ± 10m2/g。
Adsorbent is carried out performance test, at basic smoke components (84%N2, 5%O2), at a temperature of 80 DEG C, the demercuration efficiency of 3h reaches 67.5%；Smoke components (84%N2, 5%O2、200ppm SO2With 20ppm HCl), at 80 DEG C, the demercuration efficiency of 3h all can maintain 97%-100%.
Test case
Table 2, as a example by the petroleum coke that potassium iodide/potassium bromide is modified, lists the pore structure parameter of the modified sample of petroleum coke matrix activated carbon (example, comparative example) and different proportion potassium iodide thereof.
Table 2. petroleum coke matrix activated carbon and the specific surface area of modified adsorbent, pore volume and average pore size
By the way of saline solution impregnation process, petroleum coke matrix activated carbon is carried out chemical activation, character and the structure of prepared absorbent charcoal material can be regulated and controled.The petroleum coke matrix activated carbon hole that modification obtains is flourishing, has 800-1200m2·g-1BET specific surface area, can be as demercuration adsorbent.
Claims (9)
1. a method of modifying for petroleum coke matrix activated carbon, uses the petroleum coke base of halide salt solution impregnation process drying
Activated carbon, after filtered solution, places and is dried more than 10h in 100-120 DEG C of baking oven.
Method of modifying the most according to claim 1, it is characterised in that the concentration of described halide salt solution is
0.002～0.300mol/L；Described halide salt is 0.01～0.15:1 with the weight ratio of described petroleum coke matrix activated carbon.
The method of modifying of petroleum coke matrix activated carbon the most according to claim 1 and 2, it is characterised in that described halogen
Change salt is at least one in potassium iodide, potassium bromide, potassium chloride, ammonium bromide, ammonium chloride, calcium chloride, manganese chloride.
4. the activated carbon that method of modifying described in claim 1 or 2 or 3 obtains.
Activated carbon the most according to claim 4, it is characterised in that the BET specific surface area of described activated carbon is
700～1200m2/g。
6. activated carbon described in claim 5 is as the application of adsorbent.
Application the most according to claim 6, it is characterised in that described adsorbent is used for flue gas demercuration.
8. the preparation method of the petroleum coke matrix activated carbon described in claim 1, it is characterised in that comprise the following steps:
(1) pretreatment: be not less than the petroleum coke of 3% as raw material with sulfur content, crushes and screens to 60～100 mesh, clean,
Dry；
(2) activation: with retort for activation device, under the conditions of nitrogen atmosphere and activation temperature are 600～800 DEG C, will
Alkali and petroleum coke mixing activate, and the mass ratio of alkali and petroleum coke is 1:1, activates more than 60min, and at nitrogen
It is cooled to room temperature under atmosphere.
Preparation method the most according to claim 8, it is characterised in that described alkali is potassium hydroxide and/or hydrogen
Sodium oxide.
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| CN109174140A (en) * | 2018-09-10 | 2019-01-11 | 太原科技大学 | A kind of flue gas desulfurizing and hydrargyrum-removing catalyst and its preparation method and application |
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| CN106311139A (en) * | 2016-09-05 | 2017-01-11 | 广东电网有限责任公司电力科学研究院 | Carbon-based mercury-removing absorbent and preparation method thereof |
| CN106311139B (en) * | 2016-09-05 | 2019-03-12 | 广东电网有限责任公司电力科学研究院 | Carbon-based demercuration adsorbent and preparation method thereof |
| CN109174140A (en) * | 2018-09-10 | 2019-01-11 | 太原科技大学 | A kind of flue gas desulfurizing and hydrargyrum-removing catalyst and its preparation method and application |
| CN109174140B (en) * | 2018-09-10 | 2021-05-25 | 太原科技大学 | Flue gas desulfurization and demercuration catalyst and preparation method and application thereof |
| CN113663641A (en) * | 2021-08-24 | 2021-11-19 | 航天环境工程有限公司 | Preparation method and application of novel mercury removal adsorbent |
| CN114029031A (en) * | 2021-09-26 | 2022-02-11 | 北京清新环境技术股份有限公司 | Composition for preparing demercuration adsorbent, demercuration adsorbent and preparation method thereof |
| CN114210174A (en) * | 2021-11-10 | 2022-03-22 | 生态环境部华南环境科学研究所 | Absorption/adsorption coupling reinforced stink and organic waste gas treatment method |
| CN114210174B (en) * | 2021-11-10 | 2023-08-04 | 生态环境部华南环境科学研究所 | Malodor and organic waste gas treatment method with enhanced absorption/adsorption coupling |
| CN114130357A (en) * | 2021-12-03 | 2022-03-04 | 海西州盐化工产品质量检验检测中心 | Preparation method and application of salt lake old brine modified biochar |
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