CN101235324A - High-temperature coal gas desulfurizer using coal ash as carrier and desulfurization device thereof - Google Patents
High-temperature coal gas desulfurizer using coal ash as carrier and desulfurization device thereof Download PDFInfo
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- CN101235324A CN101235324A CNA2007101582387A CN200710158238A CN101235324A CN 101235324 A CN101235324 A CN 101235324A CN A2007101582387 A CNA2007101582387 A CN A2007101582387A CN 200710158238 A CN200710158238 A CN 200710158238A CN 101235324 A CN101235324 A CN 101235324A
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Abstract
The invention aims at solving the problem such as low desulphurization activity of desulfurizer, low mechanical strength, poor regeneration property and higher cost and the like, which discloses a high temperature desulfurizer which uses coal ash as carrier and a desulfurization device , the method comprises utilizing mechanical mixing method to mix multicomponent metal oxide, coal ash and adhesive of the activity component through machine, then extruding into strip shape by utilizing a self-made desulfurizer, drying formed desulfurizer under the temperature of 100-200 DEG C, and calcining under the temperature of 600-1000 DEG C, desulfurizer which is calcined is directly used to desulfurize coal gas under the high temperature. High-temperature desulfuration of hot coal gas adopts a circulating fluidized bed to achieve continuous desulfurization and regeneration, and desulfurizer can effectively remove H2S in high-temperature coal gas under the temperature scope which is 400-750 DEG C. Desulfurizer after being vulcanized can be regenerated in a fluid bed regenerating device. The high temperature desulfurizer has the advantages of simple preparation technique, simple equipment and low cost, which has higher vulcanization activity and sulfur capacity, excellent desulfurizing capacity and higher mechanical strength, and opens up a new approach which utilizes ash from power plant to be carrier to prepare high-temperature coal gas desulfurizer.
Description
Technical field:
The present invention relates to a kind of desulfurizing agent for high-temp gas and desulfurizer, relating in particular to a kind of is the desulfurizing agent for high-temp gas and the desulfurizer of carrier with the fly ash in electric power plant, the desulfurizing agent for high-temp gas of the present invention's preparation will be used for turning to coal gas the polygenerations systeme on basis, belong to the clean coal technology field.
Background technology:
China is maximum in the world coal production state, and coal production had reached 21.2 hundred million tons in 2005, occupied first place in the world.China is that a few is one of country of main primary energy source with coal in the world, and coal accounted for 70% in the Energy Mix ratio of China in 2005.Along with the growth year by year of coal production, the proportion of coal in Energy Mix will further increase.About 70-80% is used for burning in the coal in China consumption; wherein steam coal accounts for 53% of fire coal; but directly efficiency of combustion is low; generating efficiency by the average energy consumption of power supply is lower than 29%; and because the discharging of sulfurous gas, oxynitride and particle dust brings serious environmental to pollute, the Greenhouse effect of the earth and acid rain phenomenon are serious.The desulfurizing agent for high-temp gas that adopts both at home and abroad mostly is (compound) metal oxide of heterogeneity at present, realizes the repeatedly utilization of sweetening agent by sulfuration and regeneration.But owing to there is the problem of sweetening agent inactivation, strength degradation and regeneration sintering and generation vitriol in many recycles.As Core-in-shell type sweetening agent, can significantly improve the physical strength of calcium desulfurizing agent, the preparation of this sweetening agent is to be the bead of nuclear with the Wingdale, do shell with aluminous cement, the calcium aluminate of 20wt% is arranged in the nuclear and the calcium aluminate of 40wt% is arranged in the shell, and when outer casing thickness is 0.4mm, has and well resistance to wear and receptivity.Increase the thickness of shell, antiwear property also can strengthen, but receptivity descends thereupon.And for example, the desulfuration efficiency of making the sweetening agent of pore-forming material with graphite also improves a lot, but graphite can not stop circulation back sweetening agent inactivation 20 times.And be that its preparation technology of sweetening agent of carrier is comparatively complicated with the gac, physical strength is low.Therefore, present big quantity research can not satisfy industrialization fully to the requirement of desulfurizing agent for high-temp gas at aspects such as desulphurizing activated, physical strength and regeneration.Generally speaking, present deficiency such as on the high side, the complicated process of preparation of the desulfurizing agent for high-temp gas ubiquity of exploitation, physical strength is low, efflorescence is serious, volatile or easy-sintering, extensive industrialization difficulty is big, has limited the development of coal clean utilization technology.
Summary of the invention:
The present invention for solve sweetening agent desulphurizing activated low, physical strength is not high and regenerability difference and on the high side, the problem of aspects such as the serious and complicated process of preparation of efflorescence, propose following solution: with flyash is the desulfurizing agent for high-temp gas of carrier, utilizes mechanical mixing that multi-element metal oxide, flyash and the binding agent of active ingredient made the finished product sweetening agent after by mechanically mixing, moulding, calcining; Components by weight percentage, in the described active ingredient content of multi-element metal oxide be 20%-80% (wt, db), the content of flyash is 10-60%, the content of binding agent (kaoline) is 5-30%; Its composition form is (Fe
xCe
1-x)
y(Mo, La)
1-y/ (ash, kaoline); Wherein the x value is 0.2-0.7, and the y value is 0.4-0.9; By said ratio with multi-element metal oxide and flyash and binding agent uniform mixing after; adopt homemade sweetening agent tablets press extruded moulding; the sweetening agent of moulding carries out drying under 100-200 ℃, in 600-1000 ℃ of calcining down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Preparation is the desulfurizing agent for high-temp gas tablets press of carrier with flyash, and it comprises the tablets press body, the discharge port of filler cylinder, a plurality of apertures, the rotation axis of fixedlying connected with the filler base frame, swing handle etc.
Application is the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier with flyash, near the bottom of fluidized-bed vulcanization reaction still (4), be provided with coal gas of high temperature admission port (1), be provided with uniform device (2) from coal gas of high temperature inlet (1) to the vulcanization reaction still (4), sweetening agent (3) places reactor (4), gas exit (5) after the top of reactor (4) is provided with purification, its side is provided with feeding port (12), described gas exit (5) communicates with cyclonic separator (6), the lower end of described cyclonic separator (6) is communicated with circulation material conveying device (7), described circulation material conveying device (7) is communicated with another fluidized-bed regenerative response still (8), on regenerative response still (8), be provided with resurgent gases outlet (14), described regenerative response still (8) is communicated with fluidized-bed vulcanization reaction still (4) through circulation material conveying device (10) again, forms loop; Between circulation material conveying device (10) and fluidized-bed vulcanization reaction still (4), be provided with waste outlet (16).
Described sweetening agent and the coal gas of high temperature that enters reactor carry out desulphurization reaction 400-750 ℃ of temperature range to coal gas of high temperature, remove hydrogen sulfide and organosulfur.
Beneficial effect of the present invention: adopt mechanical mixing metal oxide and flyash and binding agent uniform mixing; wherein metal oxide is as the active ingredient of sweetening agent; flyash is as the sweetening agent carrier; utilize homemade sweetening agent tablets press extruded moulding, after super-dry, calcining, directly obtain the finished product sweetening agent.Preparation technology simplifies, and equipment is simple, and cost is low;
The many metals sweetening agent that with flyash is carrier has high sulfurate activity and Sulfur capacity, has good sweetening power and higher physical strength 400 ℃ of-750 ℃ of temperature ranges.Can be after this sweetening agent sulfuration 600-900 ℃ of temperature range regeneration, the sweetening agent after the regeneration can recycle.Realize the recovery of elemental sulfur in the regenerative process, thereby realize the resource utilization of desulfurization product;
With flyash is the sweetening agent physical strength height of preparing carriers, can utilize fixed bed/fluidized-bed/devices such as circulating fluidized bed to carry out desulfurization in the high temperature desulfurizing process, less demanding to coordinative composition of equipments, is easy to realize industrialization;
The new way of utilizing again of fly ash in electric power plant has been proposed for the preparing carriers desulfurizing agent for high-temp gas with flyash.
Description of drawings:
It is the process flow sheet of the desulfurizing agent for high-temp gas of carrier with flyash that Fig. 1 designs preparation
It is the double-circulating fluid bed apparatus structure synoptic diagram of desulfurization/regeneration of the desulfurizing agent for high-temp gas of carrier that Fig. 2 uses with flyash
Fig. 3 F
8C
2The AS sweetening agent is at the vulcanization curve of differing temps
Embodiment:
Referring to Fig. 1, be the desulfurizing agent for high-temp gas of carrier with flyash, utilize mechanical mixing that multi-element metal oxide, flyash and the binding agent of active ingredient made the finished product sweetening agent after by mechanically mixing, moulding, calcining; Components by weight percentage, in the described active ingredient content of multi-element metal oxide be 20%-80% (wt, db), the content of flyash is 10-60%, the content of binding agent (kaoline) is 5-30%; Its composition form is (Fe
xCe
1-x)
y(Mo, La)
1-y/ (ash, kaoline); Wherein the x value is 0.2-0.7, and the y value is 0.4-0.9; By said ratio with multi-element metal oxide and flyash and binding agent uniform mixing after; adopt homemade sweetening agent tablets press extruded moulding; the sweetening agent of moulding carries out drying under 100-200 ℃, in 600-1000 ℃ of calcining down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
The carrier of multi-element metal oxide active ingredient is the flyash of coal-burning power plant in the described sweetening agent, and the main ingredient of described flyash is sieve and silica-sesquioxide and the complex body that contains the multielement of materials such as part iron calcium magnesium and a spot of unburned carbon and volatile matter; The main active component of described multi-element metal oxide is the oxide compound of Fe, Ce, Mo and La; Described binding agent is a kaolin.
Preparation is the desulfurizing agent for high-temp gas tablets press of carrier with flyash, and it comprises the tablets press body, the discharge port of filler cylinder, a plurality of apertures, the rotation axis of fixedlying connected with the filler base frame, swing handle etc.
Application is the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier with flyash, near the bottom of fluidized-bed vulcanization reaction still 4, be provided with coal gas of high temperature admission port 1, be provided with uniform device 2 from coal gas of high temperature inlet 1 to the vulcanization reaction still 4, sweetening agent 3 places reactor 4, gas exit 5 after the top of reactor 4 is provided with purification, its side is provided with feeding port 12, described gas exit 5 communicates with cyclonic separator 6, the lower end of described cyclonic separator 6 is communicated with circulation material conveying device 7, described circulation material conveying device 7 is communicated with another fluidized-bed regenerative response still 8, on regenerative response still 8, be provided with resurgent gases outlet 14, described regenerative response still 8 is communicated with fluidized-bed vulcanization reaction still 4 through circulation material conveying device 10 again, forms loop; Between circulation material conveying device 10 and fluidized-bed vulcanization reaction still 4, be provided with waste outlet 16.
Be respectively equipped with uniform device and circulation gas inlet 13 in bottom near described circulation material conveying device 7 and circulation material conveying device 10; Be provided with uniform device and resurgent gases inlet 11 in bottom near described regenerative response still 8; Described resurgent gases inlet 11 is connected with the regeneration gas primary heater unit 15 of outside; Described sweetening agent and the coal gas of high temperature that enters reactor, the sulfide in 400-750 ℃ of temperature range and coal gas of high temperature carries out vulcanization reaction.
With iron cerium oxide mol ratio n1: n2=8: 2 is active ingredient, and its total mass is m
1With flyash is carrier, and its quality is m
2With kaolin is binding agent, and its quality is m
3By active ingredient, flyash and binding agent mass ratio m1: m2: m3=8: for proportioning prepared iron-based high temp gas desulfurizer F at 2: 1
8C
2AS.At 420 ℃, 520 ℃, 620 ℃ are carried out desulfurization.
Referring to Fig. 3, be the F of carrier with flyash
8C
2The AS desulfurizing agent for high-temp gas is good at 420-620 ℃ desulfurization performance, can be for a long time outlet H
2S concentration remains on very lower concentration; And along with the desulfurization time of the rising sweetening agent of curing temperature prolongs, the sweetening agent after 620 ℃ of sulfurations does not almost have efflorescence.Therefore, be that the desulfurizing agent for high-temp gas sweetening power of carrier is strong with flyash, the mechanical property height of sulfur product is the ideal desulfurizing agent for high-temp gas.
It is polynary (containing Fe, Ce, Mo and La etc.) metal oxide desulfurizer of carrier with flyash that the present invention utilizes the mechanical mixing preparation.Multi-component metal oxide, flyash and binding agent make the finished product sweetening agent after by mechanically mixing, moulding, calcining.The sweetening agent of preparation can be 400-750 ℃ of temperature range to the H in the coal gas of high temperature
2S carries out effective elimination.High temperature iron base desulfurizer satisfactory mechanical property after the sulfuration can bear a plurality of reprocessing cycle and use, thereby satisfy the requirement of industrial fluidized bed reactor to the physical strength of high temperature desulfuration agent.
The main active component that with flyash is the sweetening agent of carrier comprises Fe, Ce, metal oxides such as Mo and La.Wherein main active component is the oxide compound of Fe, Ce, Mo and La, for strengthening the desulfurization performance of iron-base desulfurizer under the different application condition, also considers to add other metallic element improves sweetening agent as active ingredient desulfurization performance in the practical application.The active ingredient of sweetening agent is a multi-element metal oxide, its weight percent content be 20%-80% (wt, db), the content of flyash is 10-60%, the content of binding agent (kaoline) is 5-30%; The sweetening agent composition form is (Fe
xCe
1-x)
y(Mo, La)
1-y/ (ash, kaoline); Wherein the x value is 0.2-0.7, and the y value is 0.4-0.9.The metallic element component and the part metals element in the flyash that add in the sweetening agent are the active ingredient of desulfurization, flyash plays active ingredient and supports and dissemination, the passage that sulfide moves to the active centre in the coal gas of high temperature is provided simultaneously, improves sweetening agent sulfurized reactive behavior.
Embodiment 1: adopting the mechanical mixing preparation is the desulfurizing agent for high-temp gas of carrier with flyash, the metal oxide (n of the Fe 50%, Ce and Mo
Fe: n
Ce: n
Mo=5: 2: 1) with 30% flyash and 20% kaolin uniform mixing; the metal oxide that mixes and flyash and binder component are added water obtain the pasty state miscellany; put in the sweetening agent tablets press cylinder; extrusion obtains the cylindrical pellet of φ 2 * 2mm; the sweetening agent of moulding carries out drying under 100 ℃; in 600 ℃ of calcinings down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Embodiment 2: adopting the mechanical mixing preparation is the desulfurizing agent for high-temp gas of carrier with flyash, the metal oxide (n of 80% Fe, Ce, Mo and La
Fe: n
Ce: n
Mo: n
La=4: 2: 1: 1) with 10% flyash and 10% kaolin uniform mixing; the metal oxide that mixes and flyash and binder component are added water obtain the pasty state miscellany; put in the sweetening agent tablets press cylinder; extrusion obtains the cylindrical pellet of φ 2 * 2mm; the sweetening agent of moulding carries out drying under 200 ℃; in 1000 ℃ of calcinings down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Embodiment 3: adopting the mechanical mixing preparation is the desulfurizing agent for high-temp gas of carrier with flyash, the metal oxide (n of 65% Fe, Ce, Mo and La
Fe: n
Ce: n
Mo: n
La=4: 1: 1: 1) with 30% flyash and 5% kaolin uniform mixing; the metal oxide that mixes and flyash and binder component are added water obtain the pasty state miscellany; put in the sweetening agent tablets press cylinder; extrusion obtains the cylindrical pellet of φ 2 * 2mm; the sweetening agent of moulding carries out drying under 150 ℃; in 800 ℃ of calcinings down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Embodiment 4: adopting the mechanical mixing preparation is the desulfurizing agent for high-temp gas of carrier with flyash, 65% Fe, Ce metal oxide (n
Fe: n
Ce=4: 1) with 20% flyash and 15% kaolin uniform mixing; the metal oxide that mixes and flyash and binder component are added water obtain the pasty state miscellany; put in the sweetening agent tablets press cylinder; extrusion obtains the cylindrical pellet of φ 2 * 2mm; the sweetening agent of moulding carries out drying under 180 ℃; in 900 ℃ of calcinings down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Embodiment 5: adopting the mechanical mixing preparation is the desulfurizing agent for high-temp gas of carrier with flyash, 75% Fe, Ce metal oxide (n
Fe: n
Ce=5: 1) with 15% flyash and 10% kaolin uniform mixing; the metal oxide that mixes and flyash and binder component are added water obtain the pasty state miscellany; put in the sweetening agent tablets press cylinder; extrusion obtains the cylindrical pellet of φ 2 * 2mm; the sweetening agent of moulding carries out drying under 130 ℃; in 700 ℃ of calcinings down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
Referring to Fig. 2, the high temperature desulfurizing of heating gas adopts circulating fluidized bed to realize continuous desulfurization and regeneration, and the sweetening agent that provides among the embodiment 1～5 can be 400-750 ℃ of temperature range to the H in the coal gas of high temperature
2S carries out effective elimination, makes the H in the coal gas
2S content reaches the processing requirement of Poly-generation.Sweetening agent after the sulfuration is regenerated in the fluidized-bed regenerating unit.The cleaning coal gas that removes behind the sulfide is discharged by the outlet 5 that links to each other with cyclonic separator 6, enters internal combustion turbine or enters the synthetic gas reformer.Sweetening agent 3 after the sulfuration arrives vulcanization reaction still tops after cyclonic separator 6 separates the back enters circulation material conveying device 7 and send into another fluidized-bed regenerative response still 8 from the lower end of cyclonic separator 6 with coal gas of high temperature; Regeneration gas 11 is entered the regeneration of reactor 8 realization sweetening agents by uniform device by the bottom of regenerative response still 8 through regeneration gas primary heater unit 15 backs.Sweetening agent after the regeneration enters another circulation material conveying device 10 and sends back to fluidized-bed vulcanization reaction still 4, realizes the sulfuration and the regenerative response of sealing thus.Sweetening agent after the inefficacy can regularly be discharged from the sweetening agent waste outlet between circulation material conveying device 10 and the fluidized-bed vulcanization reaction still 4 16, and new taking off stays agent to add from the lateral charging opening 12 of fluidized-bed vulcanization reaction still.
Claims (10)
1, is the desulfurizing agent for high-temp gas of carrier with flyash, utilizes mechanical mixing that multi-element metal oxide, flyash and the binding agent of active ingredient made the finished product sweetening agent after by mechanically mixing, moulding, calcining; Components by weight percentage, in the described active ingredient content of multi-element metal oxide be 20%-80% (wt, db), the content of flyash is 10-60%, the content of binding agent (kaoline) is 5-30%; Its composition form is (Fe
xCe
1-x)
y(Mo, La)
1-y/ (ash, kaoline); Wherein the x value is 0.2-0.7, and the y value is 0.4-0.9; By said ratio with multi-element metal oxide and flyash and binding agent uniform mixing after; adopt homemade sweetening agent tablets press extruded moulding; the sweetening agent of moulding carries out drying under 100-200 ℃, in 600-1000 ℃ of calcining down, the sweetening agent after the calcining is directly used in the coal gas of high temperature desulfurization afterwards.
2, according to claim 1 is the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: the carrier of multi-element metal oxide active ingredient is the flyash of coal-burning power plant in the described sweetening agent.
3, according to claim 1 is the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: the main active component of described multi-element metal oxide is the oxide compound of Fe, Ce, Mo and La.
4, according to claim 1 is the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: the main ingredient of described flyash is sieve and silica-sesquioxide and the complex body that contains the multielement of materials such as part iron calcium magnesium and a spot of unburned carbon and volatile matter.
5, according to claim 1 is the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: described binding agent is a kaolin.
6, application is the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: near the bottom of fluidized-bed vulcanization reaction still (4), be provided with coal gas of high temperature admission port (1), be provided with uniform device (2) from coal gas of high temperature inlet (1) to the vulcanization reaction still (4), sweetening agent (3) places reactor (4), gas exit (5) after the top of reactor (4) is provided with purification, its side is provided with feeding port (12), described gas exit (5) communicates with cyclonic separator (6), the lower end of described cyclonic separator (6) is communicated with circulation material conveying device (7), described circulation material conveying device (7) is communicated with another fluidized-bed regenerative response still (8), on regenerative response still (8), be provided with resurgent gases outlet (14), described regenerative response still (8) is communicated with fluidized-bed vulcanization reaction still (4) through circulation material conveying device (10) again, forms loop; Between circulation material conveying device (10) and fluidized-bed vulcanization reaction still (4), be provided with waste outlet (16).
7, application according to claim 6 is the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: be respectively equipped with uniform device and circulation gas inlet (13) in the bottom near described circulation material conveying device (7) and circulation material conveying device (10).
8, application according to claim 6 is the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier with flyash, it is characterized in that: be provided with uniform device and resurgent gases inlet (11) in the bottom near described regenerative response still (8).
9, a kind of coal gas of high temperature desulfurizer according to claim 8 is characterized in that: described resurgent gases inlet (11) is connected with the regeneration gas primary heater unit (15) of outside.
10, be the vulcanizing plant of the desulfurizing agent for high-temp gas of carrier according to each application described in the claim 6～9 with flyash, it is characterized in that: described sweetening agent and the coal gas of high temperature that enters reactor, the sulfide in 400-750 ℃ of temperature range and coal gas of high temperature carries out vulcanization reaction.
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| CN2007101582387A CN101235324B (en) | 2007-11-13 | 2007-11-13 | High-temperature coal gas desulfurizer using coal ash as carrier |
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|---|---|---|---|
| CN2007101582387A CN101235324B (en) | 2007-11-13 | 2007-11-13 | High-temperature coal gas desulfurizer using coal ash as carrier |
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| CN101235324B CN101235324B (en) | 2011-06-08 |
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| CN103484170A (en) * | 2013-10-08 | 2014-01-01 | 上海电力学院 | Cerium lanthanum-based desulfurizing agent and preparation method thereof |
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| CN109647176A (en) * | 2019-01-21 | 2019-04-19 | 北京贞吉环保科技有限公司 | A kind of desulfurizing agent and preparation method thereof |
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| CN1283669A (en) * | 2000-07-14 | 2001-02-14 | 太原理工大学 | Desulfurizing agent for high-temp gas and its preparing process |
| JP4625970B2 (en) * | 2003-03-11 | 2011-02-02 | 学校法人早稲田大学 | Desulfurizing agent, method for producing the same, desulfurizing method, and method for producing hydrogen for fuel cell |
| CN1232620C (en) * | 2004-06-02 | 2005-12-21 | 刘汉东 | Catalytic coal desulfurizer and preparing method thereof |
| CN100564494C (en) * | 2007-03-16 | 2009-12-02 | 沈阳航空工业学院 | A kind of semicoke high temperature coal gas desulfurizer and application thereof |
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- 2007-11-13 CN CN2007101582387A patent/CN101235324B/en not_active Expired - Fee Related
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| CN103484170A (en) * | 2013-10-08 | 2014-01-01 | 上海电力学院 | Cerium lanthanum-based desulfurizing agent and preparation method thereof |
| CN105664706A (en) * | 2016-01-19 | 2016-06-15 | 北京三聚环保新材料股份有限公司 | High-sulfur-capacity low-cost desulfurizing agent and preparation method thereof |
| CN107573980A (en) * | 2017-09-11 | 2018-01-12 | 天津市职业大学 | A kind of coal supply chain combustion adjuvant and preparation method thereof |
| CN108187617A (en) * | 2018-01-12 | 2018-06-22 | 太原理工大学 | A kind of preparation method of porous flying dust adsorbent and its application of adsorbent |
| CN108187617B (en) * | 2018-01-12 | 2019-10-11 | 太原理工大学 | A kind of preparation method of porous flying dust adsorbent and its application of adsorbent |
| CN109647176A (en) * | 2019-01-21 | 2019-04-19 | 北京贞吉环保科技有限公司 | A kind of desulfurizing agent and preparation method thereof |
| CN110496598A (en) * | 2019-07-04 | 2019-11-26 | 宁夏宝塔化工中心实验室(有限公司) | A kind of adsorbent and its application method for being handled containing tar flue gas |
| CN112915744A (en) * | 2019-12-05 | 2021-06-08 | 武汉科林化工集团有限公司 | Method for preparing flue gas fine desulfurizer from fly ash and flue dust |
| CN112915744B (en) * | 2019-12-05 | 2022-04-19 | 武汉科林化工集团有限公司 | Method for preparing flue gas fine desulfurizer from fly ash and flue dust |
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