CN107029806A - A kind of desulphurization catalyst washes renovation process - Google Patents
A kind of desulphurization catalyst washes renovation process Download PDFInfo
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- CN107029806A CN107029806A CN201710293689.5A CN201710293689A CN107029806A CN 107029806 A CN107029806 A CN 107029806A CN 201710293689 A CN201710293689 A CN 201710293689A CN 107029806 A CN107029806 A CN 107029806A
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- desulfurization zone
- desulfurization
- regeneration
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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
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
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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
- B01J38/00—Regeneration or reactivation of catalysts, in general
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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
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
- B01J38/485—Impregnating or reimpregnating with, or deposition of metal compounds or catalytically active elements
Abstract
Renovation process is washed the invention discloses a kind of desulphurization catalyst, regenerated using pulsed, can simultaneously it be regenerated with several desulfurization zones, utilize the spraying zone of Valve controlling regenerated liquid, each desulfurization zone first sprays setting time in regenerative process, then stands dipping, treats that the sulfuric acid in catalyst aperture is reproduced liquid band and gone out, tapping valve discharge is opened again, and regenerated liquid is discharged into regenerated reactor.After racking up, tapping valve is closed, into next circulation：Spray dipping discharge, and so on, until desulphurization catalyst regeneration is thorough.The desulphurization catalyst washing renovation process that the present invention is provided, can effectively save recovery time, the regeneration efficiency of raising catalyst, the flow of reduction regeneration pump, saving operating cost.
Description
Technical field
The invention belongs to desulphurization catalyst technical field, and in particular to a kind of desulphurization catalyst washes renovation process.
Background technology
New catalytic method flue gas desulfurization technique is using catalyst as core, the adsorption function of the catalyst both active charcoal,
There is certain storage capacity to sulfuric acid again, it is often more important that, in the presence of oxygen, can be by SO with catalysis2Oxidation
Into SO3, while generating sulfuric acid with the vapor reaction in flue gas, sweetening process is changed into sulphuric acid process.
Catalyst is during sulphur dioxide production sulfuric acid is aoxidized, after certain time, can reach saturation, and absorption is full
The catalyst of sum needs, by washing, the sulfuric acid adsorbed in catalyst to be washed out so that the activity of catalyst is restored.At present
The regeneration of new catalytic method desulfurization technology catalyst uses level Four pickling regeneration, under certain spray concentration, directly uses
Spray regeneration, after regenerated liquid is by bed, from beds take away catalyst in the sulfuric acid that adsorbs, be returned directly to regenerated reactor.
Directly spray is regenerated because regenerated liquid is shorter in the residence time of beds, it is not easy to wash out the sulphur in catalyst aperture
Acid, causes regeneration not thorough, and influence catalyst recycles efficiency.
Therefore catalyst regeneration effect has a great impact to the desulfuration efficiency of new catalytic method desulfurization technology.
The content of the invention
Renovation process is washed there is provided a kind of desulphurization catalyst present invention aim to address above mentioned problem, this method can have
The charcoal base desulphurization catalyst that effect solves prior art regenerates not thorough, the low problem of efficiency.
In order to solve the above technical problems, the technical scheme is that：A kind of desulphurization catalyst washes renovation process, specifically
Comprise the following steps：
S1：Control valve：The gas approach and outlet valve for several desulfurization zones for needing to regenerate are closed, by the first desulfurization
The water intaking valve in area is opened, and outlet valve is closed, and the water intaking valve of follow-up desulfurization zone and outlet valve are closed, by the outlet valve of regenerated reactor and
Inlet valve is opened；
S2：Once spray：Regeneration pump is opened, the first desulfurization zone is sprayed, setting time is sprayed to the first desulfurization zone
Afterwards, the first desulfurization zone water intaking valve is closed, the second desulfurization zone water intaking valve is opened, the second desulfurization zone is sprayed；To the second desulfurization
Area was sprayed after a period of time, closed the second desulfurization zone water intaking valve, then postorder desulfurization zone is sprayed successively, until needing regeneration
Several desulfurization zones all spray complete；
S3：Preamble stands dipping：While regeneration pump is sprayed to postorder desulfurization zone, the desulfurization zone that preamble was sprayed according to
Secondary to enter standing impregnation stage, catalyst and regenerated liquid are fully contacted, and are stood after dipping setting time, open complete standing successively
The draining valve of the desulfurization zone of dipping, regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the desulfurization
The draining valve in area；
S4：Secondary spraying：Several desulfurization zones all spray completions of regeneration are needed, and the first desulfurization zone completes to stand leaching
After stain and regenerated liquid discharge are finished, the first desulfurization zone water intaking valve is again turned on, carrying out second to the first desulfurization zone sprays, then right
Order completion stands dipping afterwards and regenerated liquid discharges the desulfurization zone after finishing, according to the order and side once sprayed in step S2
Formula, carries out spraying for second successively；
S5：Postorder stands dipping：While regeneration pump carries out secondary spraying to preamble desulfurization zone, the desulfurization that postorder was sprayed
Area sequentially enters standing impregnation stage, and catalyst and regenerated liquid are fully contacted, and stands after dipping setting time, opens complete successively
The draining valve of the desulfurization zone of dipping is stood, regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, closing should
The draining valve of desulfurization zone；
S6：Circular regeneration：Repeat step S2-S5, completion in need to institute again by each desulfurization zone circular regeneration several times
The regeneration of raw desulfurization zone.
S7：After the completion of regeneration, close the water intaking valve of all desulfurization zones, open outlet valve, drain after a period of time, open into
Air valve and air outlet valve, into desulfurization stage.
What deserves to be explained is, the concentration and consumption of regenerated liquid can be this area conventional selection, have no particular/special requirement.Above-mentioned skill
In art scheme, in step S2 and step S4, the sprinkle density to desulfurization zone is 10~35m3/m2, spray time is 1~8min.This
Outside, it can also be selected for the time and regenerated liquid mass rate of emission those skilled in the art that stand dipping according to conventional,
In the present invention, the standing dip time in step S3 and step S5 is preferably 5~25min, and regenerated liquid discharge speed is 0.8~
1.5m/s。
Further, circular regeneration number of times also can accordingly be set according to actual conditions, and the present invention is preferably each de-
Sulphur area circular regeneration number of times is 3~8 times.
The desulphurization catalyst washing renovation process that the present invention is provided, is regenerated using pulsed, can be same with several desulfurization zones
Shi Zaisheng, using the spraying zone of Valve controlling regenerated liquid, each desulfurization zone first sprays setting time in regenerative process, then stands
Dipping, treats that the sulfuric acid in catalyst aperture is reproduced liquid band and gone out, then opens tapping valve discharge, and regenerated liquid is discharged into regenerated reactor.Row
After discharging, tapping valve is closed, into next circulation：Spray-dipping-discharge, and so on, until desulphurization catalyst regeneration
Thoroughly.
The desulphurization catalyst washing renovation process that the present invention is provided has the advantages that：Using impulse method regeneration side
Formula, can simultaneously be regenerated with several desulfurization zones, saved the recovery time, originally regenerate a desulfurization zone used in time now may be used
To complete the regeneration of two desulfurization zones；And the tower for being relatively large in diameter, pulse regneration can be carried out directly to tower subregion, reduction is again
The flow of raw pump, saves operating cost；Invention increases standing dipping process, when sufficiently being contacted to catalyst and regenerated liquid
Between, it is ensured that the sulfuric acid in catalyst aperture is reproduced liquid wash-off, effectively improves the regeneration efficiency of catalyst.All things considered, the party
Method is simple to operate, it is easy to accomplish, large-scale production is can be applied to, is worth in the field of business and promotes.
Embodiment
With reference to specific embodiment, the present invention is described further：
The number of desulfurization zone is different according to practical application, and following specific embodiments are regenerated as simultaneously with two desulfurization zones
Example is illustrated accordingly.Inventor washes regeneration side in fixed bed reactors to the desulphurization catalyst provided using the present invention
Catalyst after method regeneration carries out desulfurization performance test.Test condition is：SO in simulated flue gas2Content is 5000mg/Nm3, oxygen
Content is that 10%, water vapour content is 8%, and intake air temperature is 80 DEG C, and air speed is 800h-1.
Embodiment 1
Simulation of desulfurization flue gas of the desulphurization catalyst by above-mentioned condition of the present embodiment test for a period of time after, reach full
With regenerated by following steps：
S1：Control valve：The gas approach and outlet valve for two desulfurization zones for needing to regenerate are closed, by the first desulfurization zone
Water intaking valve open, outlet valve is closed, and the water intaking valve of the second desulfurization zone and outlet valve are closed, and by the outlet valve of regenerated reactor and is entered
Penstock is opened；
S2：Once spray：Regeneration pump is opened, the first desulfurization zone is sprayed, sprinkle density is 18m3/m2, spray 4min
Afterwards, the first desulfurization zone water intaking valve is closed, the second desulfurization zone water intaking valve is opened, the second desulfurization zone is sprayed, sprinkle density is
18m3/m2, spray after 4min, close the second desulfurization zone water intaking valve；
S3：Preamble stands dipping：While regeneration pump is sprayed to the second desulfurization zone, the first desulfurization zone, which enters to stand, soaks
Stain stage, catalyst and regenerated liquid are fully contacted, and are stood after dipping 16min, open the draining valve of the first desulfurization zone, regenerated liquid row
It is 1.0m/s to release speed, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the row of the desulfurization zone
Water valve；
S4：Secondary spraying：After the completion of the spray of second desulfurization zone, and the first desulfurization zone completes to stand dipping and regenerated liquid is discharged
After finishing, the first desulfurization zone water intaking valve is again turned on, carrying out second to the first desulfurization zone sprays, and sprinkle density is 18m3/m2,
Spray 4min, after the completion of the first desulfurization zone secondary spraying, then again to complete to stand dipping and regenerated liquid discharge finish after second
Desulfurization zone carries out secondary spraying；
S5：Postorder stands dipping：While regeneration pump carries out secondary spraying to the first desulfurization zone, the second desulfurization zone enters in meditation
Impregnation stage is put, catalyst and regenerated liquid are fully contacted, stood after dipping 16min, open the draining valve of the second desulfurization zone, regeneration
Liquid discharge speed is 1.0m/s, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the desulfurization zone
Draining valve；
S6：Circular regeneration：Repeat step S2-S5, each desulfurization zone circular regeneration 4 times is completed to institute's regeneration in need
Desulfurization zone regeneration.
S7：After the completion of regeneration, close the water intaking valve of all desulfurization zones, open outlet valve, drain after a period of time, open into
Air valve and air outlet valve, into desulfurization stage.
Catalyst after regeneration enters the desulfurization in next cycle, and test Sulfur capacity is 220mg/g.
Embodiment 2
Simulation of desulfurization flue gas of the desulphurization catalyst by above-mentioned condition of the present embodiment test for a period of time after, reach full
With regenerated by following steps：
S1：Control valve：The gas approach and outlet valve for two desulfurization zones for needing to regenerate are closed, by the first desulfurization zone
Water intaking valve open, outlet valve is closed, and the water intaking valve of the second desulfurization zone and outlet valve are closed, and by the outlet valve of regenerated reactor and is entered
Penstock is opened；
S2：Once spray：Regeneration pump is opened, the first desulfurization zone is sprayed, sprinkle density is 16m3/m2, spray 5min
Afterwards, the first desulfurization zone water intaking valve is closed, the second desulfurization zone water intaking valve is opened, the second desulfurization zone is sprayed, sprinkle density is
16m3/m2, spray after 5min, close the second desulfurization zone water intaking valve；
S3：Preamble stands dipping：While regeneration pump is sprayed to the second desulfurization zone, the first desulfurization zone, which enters to stand, soaks
Stain stage, catalyst and regenerated liquid are fully contacted, and are stood after dipping 15min, open the draining valve of the first desulfurization zone, regenerated liquid row
It is 1.2m/s to release speed, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the row of the desulfurization zone
Water valve；
S4：Secondary spraying：After the completion of the spray of second desulfurization zone, and the first desulfurization zone completes to stand dipping and regenerated liquid is discharged
After finishing, the first desulfurization zone water intaking valve is again turned on, carrying out second to the first desulfurization zone sprays, and sprinkle density is 16m3/m2,
Spray 5min, after the completion of the first desulfurization zone secondary spraying, then again to complete to stand dipping and regenerated liquid discharge finish after second
Desulfurization zone carries out secondary spraying；
S5：Postorder stands dipping：While regeneration pump carries out secondary spraying to the first desulfurization zone, the second desulfurization zone enters in meditation
Impregnation stage is put, catalyst and regenerated liquid are fully contacted, stood after dipping 15min, open the draining valve of the second desulfurization zone, regeneration
Liquid discharge speed is 1.2/s, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the desulfurization zone
Draining valve；
S6：Circular regeneration：Repeat step S2-S5, each desulfurization zone circular regeneration 3 times is completed to institute's regeneration in need
Desulfurization zone regeneration.
S7：After the completion of regeneration, close the water intaking valve of all desulfurization zones, open outlet valve, drain after a period of time, open into
Air valve and air outlet valve, into desulfurization stage.
Catalyst after regeneration enters the desulfurization in next cycle, and test Sulfur capacity is 200mg/g.
Embodiment 3
Simulation of desulfurization flue gas of the desulphurization catalyst by above-mentioned condition of the present embodiment test for a period of time after, reach full
With regenerated by following steps：
S1：Control valve：The gas approach and outlet valve for two desulfurization zones for needing to regenerate are closed, by the first desulfurization zone
Water intaking valve open, outlet valve is closed, and the water intaking valve of the second desulfurization zone and outlet valve are closed, and by the outlet valve of regenerated reactor and is entered
Penstock is opened；
S2：Once spray：Regeneration pump is opened, the first desulfurization zone is sprayed, sprinkle density is 20m3/m2, spray 3min
Afterwards, the first desulfurization zone water intaking valve is closed, the second desulfurization zone water intaking valve is opened, the second desulfurization zone is sprayed, sprinkle density is
20m3/m2, spray after 3min, close the second desulfurization zone water intaking valve；
S3：Preamble stands dipping：While regeneration pump is sprayed to the second desulfurization zone, the first desulfurization zone, which enters to stand, soaks
Stain stage, catalyst and regenerated liquid are fully contacted, and are stood after dipping 17min, open the draining valve of the first desulfurization zone, regenerated liquid row
It is 1.3m/s to release speed, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the row of the desulfurization zone
Water valve；
S4：Secondary spraying：After the completion of the spray of second desulfurization zone, and the first desulfurization zone completes to stand dipping and regenerated liquid is discharged
After finishing, the first desulfurization zone water intaking valve is again turned on, carrying out second to the first desulfurization zone sprays, and sprinkle density is 20m3/m2,
Spray 3min, after the completion of the first desulfurization zone secondary spraying, then again to complete to stand dipping and regenerated liquid discharge finish after second
Desulfurization zone carries out secondary spraying；
S5：Postorder stands dipping：While regeneration pump carries out secondary spraying to the first desulfurization zone, the second desulfurization zone enters in meditation
Impregnation stage is put, catalyst and regenerated liquid are fully contacted, stood after dipping 17min, open the draining valve of the second desulfurization zone, regeneration
Liquid discharge speed is 1.3m/s, and regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the desulfurization zone
Draining valve；
S6：Circular regeneration：Repeat step S2-S5, each desulfurization zone circular regeneration 4 times is completed to institute's regeneration in need
Desulfurization zone regeneration.
S7：After the completion of regeneration, close the water intaking valve of all desulfurization zones, open outlet valve, drain after a period of time, open into
Air valve and air outlet valve, into desulfurization stage.
Catalyst after regeneration enters the desulfurization in next cycle, and test Sulfur capacity is 240mg/g.
Comparative example
The comparative example is the contrast experiment of embodiment 3, and the desulphurization catalyst tested in comparative example is related to simulated flue gas to join
Number is and embodiment 3 is identical.Simulation of desulfurization flue gas of the desulphurization catalyst by above-mentioned condition of comparative example test for a period of time after,
Saturation is reached, is regenerated according to direct spray process of the prior art, each each spray time 20min in desulfurization zone, circulation
Regeneration 4 times, is finally drained.Catalyst after regeneration enters the desulfurization in next cycle, and test Sulfur capacity is 150mg/g.
The comparative example explanation：The recovery time that two desulfurization zones are often regenerated in comparative example to be needed is 20*4*2=160min,
And two desulfurization zone used time 17*8+3=139min are often regenerated in embodiment 3,21min when embodiment is economized on, for desulfurization zone
More desulphurization system is with the obvious advantage；Comparative example is identical with desulfurization test condition with the used catalyst of embodiment 3, and after regenerating
Sulfur capacity differs 90mg/g, shows to be regenerated using the method described in comparative example, regenerates not thorough, the desulfurization longevity of influence catalyst
Life.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.This area
Those of ordinary skill can make according to these technical inspirations disclosed by the invention various does not depart from the other each of essence of the invention
Plant specific deformation and combine, these deformations and combination are still within the scope of the present invention.
Claims (6)
1. a kind of desulphurization catalyst washes renovation process, it is characterised in that：Specifically include following steps：
S1：Control valve：The gas approach and outlet valve for several desulfurization zones for needing to regenerate are closed, by the first desulfurization zone
Water intaking valve is opened, and outlet valve is closed, and the water intaking valve of follow-up desulfurization zone and outlet valve is closed, by the outlet valve of regenerated reactor and water inlet
Valve is opened；
S2：Once spray：Regeneration pump is opened, the first desulfurization zone is sprayed, the first desulfurization zone is sprayed after setting time, is closed
The first desulfurization zone water intaking valve is closed, the second desulfurization zone water intaking valve is opened, the second desulfurization zone is sprayed；Second desulfurization zone is sprayed
After a period of time, the second desulfurization zone water intaking valve is closed, then postorder desulfurization zone is sprayed successively, until needing some of regeneration
All spray is completed for individual desulfurization zone；
S3：Preamble stands dipping：While regeneration pump is sprayed to postorder desulfurization zone, the desulfurization zone that preamble was sprayed is entered successively
Enter and stand impregnation stage, catalyst and regenerated liquid are fully contacted, stand after dipping setting time, open complete to stand dipping successively
Desulfurization zone draining valve, regenerated liquid returned in regenerated reactor, after the regenerated liquid in bed is racked up, closes the desulfurization zone
Draining valve；
S4：Secondary spraying：Need regeneration several desulfurization zones all spray complete, and the first desulfurization zone complete stand dipping and
After regenerated liquid discharge is finished, the first desulfurization zone water intaking valve is again turned on, carrying out second to the first desulfurization zone sprays, then to postorder
Secondary completion stands dipping and regenerated liquid discharges the desulfurization zone after finishing, according to the order and mode once sprayed in step S2,
Carry out spraying for second successively；
S5：Postorder stands dipping：Regeneration pump to preamble desulfurization zone carry out secondary spraying while, the desulfurization zone that postorder was sprayed according to
Secondary to enter standing impregnation stage, catalyst and regenerated liquid are fully contacted, and are stood after dipping setting time, open complete standing successively
The draining valve of the desulfurization zone of dipping, regenerated liquid is returned in regenerated reactor, after the regenerated liquid in bed is racked up, and closes the desulfurization
The draining valve in area；
S6：Circular regeneration：Repeat step S2-S5, by each desulfurization zone circular regeneration several times, complete to regeneration in need
The regeneration of desulfurization zone.
S7：After the completion of regeneration, the water intaking valve of all desulfurization zones is closed, outlet valve is opened, drains after a period of time, intake valve is opened
And air outlet valve, into desulfurization stage.
2. desulphurization catalyst according to claim 1 washes renovation process, it is characterised in that：In the step S2, to de-
The sprinkle density in sulphur area is 10~35m3/m2, spray time is 1~8min.
3. desulphurization catalyst according to claim 1 washes renovation process, it is characterised in that：In the step S3, stand
Dip time is 5~25min, and regenerated liquid discharge speed is 0.8~1.5m/s.
4. desulphurization catalyst according to claim 1 washes renovation process, it is characterised in that：In the step S4, to de-
The sprinkle density in sulphur area is 10~35m3/m2, spray time is 1~8min.
5. desulphurization catalyst according to claim 1 washes renovation process, it is characterised in that：In the step S5, stand
5~25min of dip time, regenerated liquid discharge speed is 0.8-1.5m/s.
6. desulphurization catalyst according to claim 1 washes renovation process, it is characterised in that：Each desulfurization zone circular regeneration
Number of times is 3~8 times.
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| CN201710293689.5A CN107029806B (en) | 2017-04-28 | 2017-04-28 | A kind of desulphurization catalyst washing regeneration method |
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| CN201710293689.5A CN107029806B (en) | 2017-04-28 | 2017-04-28 | A kind of desulphurization catalyst washing regeneration method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832870A (en) * | 2022-04-29 | 2022-08-02 | 昆明理工大学 | Integrated regenerating unit of desulfurization catalyst |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048173A (en) * | 1989-06-23 | 1991-01-02 | 中国科学院大连化学物理研究所 | Contain the iodine activated-carbon catalyst and be used for elimination and recovery industrial exhaust gas sulfur dioxide technology |
| CN101973603A (en) * | 2010-09-29 | 2011-02-16 | 江苏南大金山环保科技有限公司 | Desorption method for reutilization of desorption agent |
| CN105251544A (en) * | 2015-11-27 | 2016-01-20 | 成都国化环保科技有限公司 | Regenerant for calcium-poisoned carbon-based desulfurization catalyst and regeneration technology thereof |
-
2017
- 2017-04-28 CN CN201710293689.5A patent/CN107029806B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048173A (en) * | 1989-06-23 | 1991-01-02 | 中国科学院大连化学物理研究所 | Contain the iodine activated-carbon catalyst and be used for elimination and recovery industrial exhaust gas sulfur dioxide technology |
| CN101973603A (en) * | 2010-09-29 | 2011-02-16 | 江苏南大金山环保科技有限公司 | Desorption method for reutilization of desorption agent |
| CN105251544A (en) * | 2015-11-27 | 2016-01-20 | 成都国化环保科技有限公司 | Regenerant for calcium-poisoned carbon-based desulfurization catalyst and regeneration technology thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832870A (en) * | 2022-04-29 | 2022-08-02 | 昆明理工大学 | Integrated regenerating unit of desulfurization catalyst |
| CN114832870B (en) * | 2022-04-29 | 2022-11-18 | 昆明理工大学 | Integrated regenerating unit of desulfurization catalyst |
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| CN107029806B (en) | 2019-07-12 |
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