CN109200746A - The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation - Google Patents
The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation Download PDFInfo
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- CN109200746A CN109200746A CN201811319103.9A CN201811319103A CN109200746A CN 109200746 A CN109200746 A CN 109200746A CN 201811319103 A CN201811319103 A CN 201811319103A CN 109200746 A CN109200746 A CN 109200746A
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- active carbon
- regeneration tank
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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
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3458—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase
- B01J20/3466—Regenerating or reactivating using a particular desorbing compound or mixture in the gas phase with steam
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/40098—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating with other heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/401—Further details for adsorption processes and devices using a single bed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The present invention relates to the techniques and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation, including absorption regeneration tank, the side of absorption regeneration tank is provided with air inlet pipe, the other side of absorption regeneration tank is connected with steam reheater by jet chimney, the bottom of absorption regeneration tank is respectively arranged with exhaust pipe and condensate draining pipe, active carbon is loaded in absorption regeneration tank, absorption regeneration tank is internally provided with steam injection equipment, desorption and regeneration technique includes absorption phase, heating heating volatilization period, soak, elevated temperature desorption or Pintsch process carbonization desorption stage and purging, activating and regenerating, cooling stage.The configuration of the present invention is simple, compact to design, easy to use, installation and maintenance are at low cost, can be realized active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter and adsorption saturation, have good desorption and regeneration effect；Desorption and regeneration processing step is simple, easily operated.
Description
Technical field
The present invention relates to active carbon in-situ desorption and regenerations after a kind of activated carbon adsorption volatile organic matter and adsorption saturation
Technique and equipment, belong to adsorbent reactivation processing technology field.
Background technique
VOCs treatment refers to the place being adsorbed, filtered to the organic exhaust gas generated in industrial processes, purified
Science and engineering is made.Usual VOCs treatment has the benzene homologues VOCs treatments, third such as formaldehyde VOCs treatment, benzene toluene dimethylbenzene
Ketone butanone VOCs treatment, ethyl acetate exhaust-gas treatment, mist of oil VOCs treatment, aldehydes VOCs treatment, styrene,
Acrylic acid VOCs treatment, resin VOCs treatment, additive VOCs treatment, coating cloud VOCs treatment, day that
The air cleaning processing mode of the organic matters such as the carbon containing hydrogen-oxygen such as water VOCs treatment.
VOCs treatment feature: organic exhaust gas be usually present it is inflammable and explosive, poisonous and harmful, not soluble in water, be dissolved in and having
The big feature of solvent, processing difficulty.Generallyd use in VOCs treatment be organic exhaust gas active-carbon adsorption treatment method,
A variety of principles such as Production by Catalytic Combustion Process, catalytic oxidation, acid-base neutralization method, plasma method.It generally is recommended to use plasma method, because
Low-temperature plasma method has the characteristics that removal efficiency is high easy to use.Relatively good organic waste gas treatment method is that catalysis oxidation is net
Change system, design of Treatment of Waste Gas is careful, purification filtering exhaust gas, effect are preferable layer by layer.
Active carbon adsorption is generallyd use to save initial investment in industry: by activated carbon adsorption exhaust gas, when absorption is full
With rear, active carbon desorption and regeneration, burns being catalyzed after exhaust gas stripping, be converted into innocuous substance, the active carbon after regeneration continues to make
With.After regenerating active carbon is to certain number, adsorption capacity is decreased obviously, then needs to regenerate or update active carbon.It should infuse at this time
Old active carbon of anticipating belongs to hazardous waste, cannot arbitrarily throw aside, and unified collect of unit should be recycled by professional dangerous waste and handles disposition.
Active carbon is the current processing most commonly used method of organic exhaust gas, has good absorption property to benzene class exhaust gas,
But it is poor to hydro carbons exhaust gas adsorptivity.Major defect is that operating cost is higher, is not suitable for the big environment of humidity.It is currently used
Absorbent-type active carbon relates generally to adsorb for tail gas adsorption and pernicious gas in the application of industrial aspect, and mostly using greatly is column
Active carbon is widely adopted wherein wooden column-shaped active carbon adsorption effect is preferable, has been gradually replaced old coaly activated carbon and has been inhaled
Attached mode.
Burning process can be desorbed that 200 DEG C of boiling point of processing is below to be had after domestic traditional 200 DEG C of temperature desorptions of organic exhaust gas
Machine object can not adsorb 200 DEG C or more high boiling organic matters, and desorption effect is bad, there is the risk of explosion.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of activated carbon adsorption volatile organic matter is provided
And after adsorption saturation active carbon in-situ desorption and regeneration technique and equipment.
The present invention adopts the following technical scheme: active carbon after a kind of activated carbon adsorption volatile organic matter and adsorption saturation
The equipment of desorption and regeneration in situ, including absorption regeneration tank, the side of the absorption regeneration tank are provided with air inlet pipe, and the absorption is again
The other side of raw tank is connected with steam reheater by jet chimney, and the bottom of the absorption regeneration tank is respectively arranged with exhaust
Pipe and condensate draining pipe, active carbon is loaded in the absorption regeneration tank, and the absorption regeneration tank is internally provided with steam spray
Injection device, the steam injection equipment include main steam line and several dendroid secondary vapors for being set on main steam line
Pipeline is provided with several steam jets on the secondary vapor pipeline.
Further, demister is provided in the air inlet pipe.
Further, fire arrester is provided in the air inlet pipe.
Further, frequency conversion fan is provided on the exhaust pipe.
Further, temperature monitoring device is provided on the jet chimney.
Using a kind of technique of active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter and adsorption saturation,
Include the following steps:
(1) absorption phase: organic exhaust gas to be processed is passed through into absorption regeneration tank, in absorption regeneration tank organic exhaust gas by
Activated carbon adsorption processing in absorption regeneration tank, treated gas drain into frequency conversion fan through the exhaust pipe of absorption regeneration pot bottom
In, stop being passed through organic exhaust gas after the active carbon saturation in absorption regeneration tank, up to no gas is discharged from exhaust pipe；
(2) heating heating volatilization period: starting steam reheater prepares superheated steam, and overheated steam is rapidly heated to 200 ~
1000 DEG C, pressure is 0.1 ~ 2.0Bar, then includes the steam injection equipment of steam jet to suction by being embedded in active carbon layer
It is passed through superheated steam in attached regenerating tank, superheated steam is uniformly sprayed to the active carbon in absorption regeneration tank, in situ to suction
Active carbon heats in attached regenerating tank；
(3) soak, elevated temperature desorption or Pintsch process carbonization desorption stage: heating the active carbon in absorption regeneration tank (1),
Active carbon is heated to persistently keeping the temperature after temperature is 200 ~ 800 DEG C, soaking time 0.5-24h, the organic matter of activated carbon adsorption
It is directly desorbed or is desorbed after Pintsch process, carbonization at high temperature；
(4) purging, activating and regenerating, cooling stage: adjustment steam reheater (5) is continually fed into absorption regeneration tank to be lower than
200 DEG C of superheated steam carries out purging cooling to activated carbon surface, superheated steam 0.1 ~ 2.0Bar of pressure, and purge time 2.0 ~
3.0h, after purging, steam off reheater stops superheated steam and is passed through, and keeps the active carbon in absorption regeneration tank naturally cold
But to room temperature, the activating and regenerating of active carbon is completed.
Apparatus of the present invention structure is simple, compact to design, easy to use, and cost is relatively low for installation and maintenance, can be realized for having
The online desorption and regeneration in situ of the active carbon of machine exhaust gas absorption, has good desorption and regeneration effect, desorption and regeneration processing step
Simply, easily operated.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Appended drawing reference: absorption regeneration tank 1, air inlet pipe 2, jet chimney 3, steam reheater 4, exhaust pipe 5, condensed water row
Water pipe 6, active carbon 7, secondary vapor pipeline 8, steam jet 9, demister 10, fire arrester 11, frequency conversion fan 12, main steam line
13。
Specific embodiment
Below with reference to specific attached drawing, the invention will be further described.
Active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation as shown in Figure 1:
Equipment, including absorption regeneration tank 1, the side of absorption regeneration tank 1 be provided with air inlet pipe 2, and the other side of absorption regeneration tank 1 passes through
Jet chimney 3 is connected with steam reheater 4, and the bottom of absorption regeneration tank 1 is respectively arranged with exhaust pipe 5 and condensate draining pipe
6, active carbon 7 is loaded in absorption regeneration tank 1, and absorption regeneration tank 1 is internally provided with steam injection equipment, steam injection equipment packet
Several dendroid secondary vapor pipelines 8 for including main steam line and being set on main steam line are provided on secondary vapor pipe 8
Several steam jets 9 are provided with demister 10 in air inlet pipe, fire arrester 11 are provided in air inlet pipe 2, is arranged on exhaust pipe 5
There is frequency conversion fan 12, is provided with temperature monitoring device on jet chimney 3.
Using a kind of technique of active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter and adsorption saturation,
Include the following steps:
(1) absorption phase: organic exhaust gas to be processed is passed through into absorption regeneration tank 1, and demister 10 is for removing organic waste
Water mist in gas, fire arrester 11 can prevent the inflammable gas in organic exhaust gas from entering absorption regeneration tank 1, in absorption regeneration tank 1
Middle organic exhaust gas is handled by the activated carbon adsorption in absorption regeneration tank 1, exhaust of the gas through 1 bottom of absorption regeneration tank that treated
Pipe 5 drains into frequency conversion fan 12, stops being passed through organic exhaust gas after active carbon in absorption regeneration tank 1 saturation, up to no gas from
Exhaust pipe 5 is discharged；
(2) heating heating volatilization period: starting steam reheater 4 prepares superheated steam, and overheated steam is rapidly heated to 200
~ 1000 DEG C, pressure is 0.1 ~ 2.0Bar, then by be embedded in active carbon layer include the steam injection equipment of steam jet 9 to
It is passed through superheated steam in absorption regeneration tank 1, superheated steam is uniformly sprayed to the active carbon in absorption regeneration tank 1, in situ
Active carbon in absorption regeneration tank 1 is heated；
(3) soak, elevated temperature desorption or Pintsch process carbonization desorption stage: heating the active carbon in absorption regeneration tank (1),
Active carbon is heated to persistently keeping the temperature after temperature is 200 ~ 800 DEG C, soaking time 0.5-24h, the organic matter of activated carbon adsorption
It is directly desorbed or is desorbed after Pintsch process, carbonization at high temperature；
(4) purging, activating and regenerating, cooling stage: adjustment steam reheater 4 is continually fed into absorption regeneration tank 1 lower than 200
DEG C superheated steam purging cooling carried out to activated carbon surface, superheated steam 0.1 ~ 2.0Bar of pressure, 2.0 ~ 3.0h of purge time,
After purging, steam off reheater 4 stops superheated steam and is passed through, and naturally cools to the active carbon in absorption regeneration tank
Room temperature completes the activating and regenerating of active carbon.
Claims (6)
1. the equipment of active carbon in-situ desorption and regeneration, feature after a kind of activated carbon adsorption volatile organic matter and adsorption saturation
Be: including absorption regeneration tank (1), the side of the absorption regeneration tank (1) is provided with air inlet pipe (2), the absorption regeneration tank (1)
The other side be connected with steam reheater (4) by jet chimney (3), the bottom of the absorption regeneration tank (1) is respectively set
There are exhaust pipe (5) and condensate draining pipe (6), is loaded with active carbon (7), the absorption regeneration in the absorption regeneration tank (1)
Tank (1) is internally provided with steam injection equipment, and the steam injection equipment includes main steam line (13) and is set to main steam
Several dendroid secondary vapor pipelines (8) on pipeline (13) are provided with the spray of several steam on the secondary vapor pipeline (8)
Mouth (9).
2. active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter as described in claim 1 and adsorption saturation
Equipment, it is characterized in that: being provided with demister (10) in the air inlet pipe (2).
3. active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter as described in claim 1 and adsorption saturation
Equipment, it is characterized in that: being provided with fire arrester (11) in the air inlet pipe (2).
4. active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter as described in claim 1 and adsorption saturation
Equipment, it is characterized in that: being provided with frequency conversion fan on the exhaust pipe.
5. active carbon in-situ desorption and regeneration after activated carbon adsorption volatile organic matter as described in claim 1 and adsorption saturation
Equipment, it is characterized in that: being provided with temperature monitoring device on the jet chimney (3).
6. again using active carbon in-situ desorption after activated carbon adsorption volatile organic matter described in claim 1 and adsorption saturation
Raw technique, characterized by the following steps:
(1) absorption phase: organic exhaust gas to be processed is passed through into absorption regeneration tank (1), organic in absorption regeneration tank (1)
Exhaust gas is by active carbon (7) adsorption treatment in absorption regeneration tank (1), treated row of the gas through absorption regeneration tank (1) bottom
Tracheae drains into frequency conversion fan (12), stops being passed through organic exhaust gas after the active carbon saturation in absorption regeneration tank (1), up to no gas
Body is discharged from exhaust pipe (5)；
(2) heating heating volatilization period: starting steam reheater prepares superheated steam, and overheated steam is rapidly heated to 200 ~
1000 DEG C, pressure is 0.1 ~ 2.0Bar, then by be embedded in active carbon layer include the steam injection equipment of steam jet (9) to
It is passed through superheated steam in absorption regeneration tank (1), superheated steam is uniformly sprayed to the active carbon in absorption regeneration tank (1),
It is in situ that the interior active carbon of absorption regeneration tank (1) is heated；
(3) soak, elevated temperature desorption or Pintsch process carbonization desorption stage: heating the active carbon in absorption regeneration tank (1),
Active carbon is heated to persistently keeping the temperature after temperature is 200 ~ 800 DEG C, soaking time 0.5-24h, the organic matter of activated carbon adsorption
It is directly desorbed or is desorbed after Pintsch process, carbonization at high temperature；
(4) purging, activating and regenerating, cooling stage: adjustment steam reheater (5) is continually fed into low in absorption regeneration tank (1)
Purging cooling, superheated steam 0.1 ~ 2.0Bar of pressure, purge time are carried out to active carbon (7) surface in 200 DEG C of superheated steams
2.0 ~ 3.0h, after purging, steam off reheater (4) stops superheated steam and is passed through, and makes the work in absorption regeneration tank (1)
Property charcoal cooled to room temperature, completes the activating and regenerating of active carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319103.9A CN109200746A (en) | 2018-11-07 | 2018-11-07 | The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319103.9A CN109200746A (en) | 2018-11-07 | 2018-11-07 | The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201484A (en) * | 2019-05-25 | 2019-09-06 | 江苏天宇石化冶金设备有限公司 | A kind of regenerating active carbon adsorption system that organic pollutant is effectively reduced |
| CN110526212A (en) * | 2019-10-12 | 2019-12-03 | 安泰环境工程技术有限公司 | A kind of hydrogen purification device with fish bone structure |
| CN110605108A (en) * | 2019-09-26 | 2019-12-24 | 西安建筑科技大学 | Method for regenerating desulfurization and denitrification waste active carbon |
| CN111003744A (en) * | 2019-12-16 | 2020-04-14 | 山东省环保产业股份有限公司 | Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant |
| CN111871402A (en) * | 2020-07-28 | 2020-11-03 | 宋安宁 | Sustainable cyclic utilization active carbon regeneration system and active carbon regeneration equipment |
| CN112107957A (en) * | 2019-06-19 | 2020-12-22 | 中国石油化工股份有限公司 | Butanol gas recovery device and method |
| CN112479845A (en) * | 2020-11-09 | 2021-03-12 | 潍坊惠丰化工有限公司 | High-concentration formaldehyde production device and production process |
| CN112892508A (en) * | 2021-01-13 | 2021-06-04 | 北京日新达能技术有限公司 | Green regeneration and quality improvement system and method for hazardous waste activated carbon |
| WO2021217555A1 (en) * | 2020-04-26 | 2021-11-04 | 无锡四方集团有限公司 | Desorption, regeneration and activation process and system for adsorbent |
| CN115212690A (en) * | 2021-04-20 | 2022-10-21 | 国家能源投资集团有限责任公司 | Active carbon desulfurization regeneration reactor and active carbon desulfurization regeneration method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201484A (en) * | 2019-05-25 | 2019-09-06 | 江苏天宇石化冶金设备有限公司 | A kind of regenerating active carbon adsorption system that organic pollutant is effectively reduced |
| CN112107957A (en) * | 2019-06-19 | 2020-12-22 | 中国石油化工股份有限公司 | Butanol gas recovery device and method |
| CN110605108A (en) * | 2019-09-26 | 2019-12-24 | 西安建筑科技大学 | Method for regenerating desulfurization and denitrification waste active carbon |
| CN110526212A (en) * | 2019-10-12 | 2019-12-03 | 安泰环境工程技术有限公司 | A kind of hydrogen purification device with fish bone structure |
| CN110526212B (en) * | 2019-10-12 | 2021-05-11 | 安泰环境工程技术有限公司 | Hydrogen purification device with fish bone structure |
| CN111003744A (en) * | 2019-12-16 | 2020-04-14 | 山东省环保产业股份有限公司 | Activated carbon in-situ cyclic adsorption regeneration process for advanced treatment of sewage plant |
| WO2021217555A1 (en) * | 2020-04-26 | 2021-11-04 | 无锡四方集团有限公司 | Desorption, regeneration and activation process and system for adsorbent |
| CN111871402A (en) * | 2020-07-28 | 2020-11-03 | 宋安宁 | Sustainable cyclic utilization active carbon regeneration system and active carbon regeneration equipment |
| CN112479845A (en) * | 2020-11-09 | 2021-03-12 | 潍坊惠丰化工有限公司 | High-concentration formaldehyde production device and production process |
| CN112892508A (en) * | 2021-01-13 | 2021-06-04 | 北京日新达能技术有限公司 | Green regeneration and quality improvement system and method for hazardous waste activated carbon |
| CN115212690A (en) * | 2021-04-20 | 2022-10-21 | 国家能源投资集团有限责任公司 | Active carbon desulfurization regeneration reactor and active carbon desulfurization regeneration method |
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Application publication date: 20190115 |