CN215196251U - Tail gas treatment device - Google Patents
Tail gas treatment device Download PDFInfo
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- CN215196251U CN215196251U CN202120516842.8U CN202120516842U CN215196251U CN 215196251 U CN215196251 U CN 215196251U CN 202120516842 U CN202120516842 U CN 202120516842U CN 215196251 U CN215196251 U CN 215196251U
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a tail gas processing apparatus is retrieved to sulphur, hypergravity oxidation machine has fluid passage's cavity pivot through lining up the shell setting on the axis of shell, and establish the sleeve that has the gas passage function at cavity pivot overcoat, still take shape simultaneously on this basis with the rotatory passageway that has spiral channel that packs the district intercommunication, realized the fluid again through rotatory passageway realization fluidic spin entering behind the cavity pivot, and at the moment that gets into the district that packs, at rotatory effort, under the spin effort of shearing force and fluid, the circumferential speed increases, produced centrifugal force pushes the fluid to the outer fringe, gas that has the oxidability is through breakage in packing the district, tear, mix, the degree of fullness of gas-liquid contact has been improved, fine liquid oxidation effect has been obtained. In addition, the sulfur recovery tail gas treatment device can effectively reduce the sulfur content in the acid gas.
Description
Technical Field
The utility model relates to a sulfur recovery tail gas processing apparatus belongs to desulfurization technical field.
Background
Acid gas is a common industrial emission in industrial production, especially found in oil refineries; the sulfur tail gas is one of acid gases, the direct discharge can cause the damage to the environment, and according to the national requirement for environmental management, the discharge requirement proposed by GB31570-2015 requires that the contents of hydrogen sulfide and sulfur dioxide are controlled at 50mg/m3Within.
At present, for the compounds containing H2The acidic gas of S is generally converted into sulfur by Claus process to be recovered, and the corresponding equipment is named as Claus sulfur recovery device, including Claus furnace, Claus reactor, tail gas treatment device, etc. The sulfur recovery rate of the process is 92-95%, even if a three-stage or four-stage catalytic converter and a high-activity catalyst are adopted, the total sulfur recovery rate can only reach 96% to the maximum, and thus the discharged tail gas can not meet the requirement of the atmospheric pollutant emission limit specified in the oil refining industry pollutant emission standard GB 31570-2015.
How to improve the sulfur recovery rate and reduce H2S and SO2Atmospheric pollution from emissions has always been a major concern in the development of claus sulfur recovery. From the recent decades of technical development at home and abroad, the main point isThe method focuses on the technical progress of the sulfur recovery device and the development of a practical tail gas strengthening treatment process. The tail gas after sulfur recovery contains H2S、SO2、COS、CS2And toxic components such as solid S and the like are required to be discharged through a high chimney after being burned, and the discharged atmospheric pollutants are mainly SO2. SO is stipulated in the 'emission Standard of Industrial pollutants for Petroleum refining' GB31570-2015 of China2The emission concentration of (2) is converted into the standard emission concentration of the atmospheric pollutants with the standard oxygen content of 2-3%. Since it is difficult, if not impossible, to increase the number of conversion stages in the Claus plant itself to achieve the desired environmental emission level, the SO emission from the Claus plant is therefore controlled2The concentration reaches the environmental protection requirement, and a tail gas strengthening treatment device must be matched.
Common tail gas strengthening treatment processes include a sub-dew point method, a direct oxidation method, a reduction absorption method, an oxidation reduction method and the like. The most effective method belongs to a reduction absorption method, and the technology mainly comprises three parts of hydrogenation reduction, tail gas absorption and tail gas incineration.
Hydrogenation reduction:
after the sulfur production tail gas of Claus device is raised to a certain temperature, the tail gas is mixed with hydrogen and fed into hydrogenation reactor, and the hydrogenation and hydrolysis reactions are implemented under the action of catalyst SO as to make SO in tail gas produce hydrolysis reaction2、S、COS、CS2Reductive hydrolysis to H2S。
Solvent absorption:
and the reacted high-temperature gas enters a steam generator to generate 0.40MPa saturated steam, the temperature of the tail gas is reduced to a certain temperature, and the tail gas enters the lower part of a tail gas quenching tower and is in countercurrent contact with quenching water and is washed and cooled. And the tail gas after quenching and temperature reduction enters a tail gas absorption tower after coming out from the top of the quenching tower.
MDEA lean amine liquid from a solvent regeneration device enters the upper part of a tail gas absorption tower and is in countercurrent contact with tail gas from a tail gas quenching tower, and H in the tail gas2S is absorbed. Absorb H2And (4) boosting the MDEA rich solution of the S by a rich amine liquid pump and then returning the MDEA rich solution to the solvent regeneration device. The regeneration adopts steam heating regeneration.
Tail gas incineration:
the purified tail gas coming out from the top of the tail gas absorption tower enters a tail gas incinerator, and sulfide remaining in the purified gas is incinerated at high temperature to generate SO2The remaining hydrogen and hydrocarbons are combusted to H2O and CO2And the high-temperature flue gas after incineration is discharged into the atmosphere through a chimney after heat is recovered.
However, the tail gas intensive treatment process typically contributes only 2% to the overall sulfur yield, and capital and operating costs are more expensive relative to the claus plant ratio. Therefore, the search for alternative technologies to replace the current complex and expensive sulfur recovery tail gas treatment device is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sulfur recovery tail gas processing apparatus.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
a hypergravity oxidation machine is provided with a shell, a hollow rotating shaft driven by power is arranged on the central axis of the shell and penetrates through the shell, a sealable fluid inlet is arranged on the rotating shaft, and a fluid channel is arranged in the rotating shaft; a sleeve is coaxially sleeved and connected with the rotating shaft outside the rotating shaft, so that a gas channel is formed between the rotating shaft and the inner wall of the sleeve, and a plurality of gas holes and gas outlets are formed in the sleeve; the rotating shaft extends towards the sleeve and is provided with a plurality of rotating channels, and convex or concave spiral channels are arranged in the rotating channels; the rotating channel is arranged through the sleeve;
a packing cylinder is coaxially sleeved with the rotating shaft and the sleeve, and a packing area is formed in the packing cylinder; the rotary channel and the air holes are communicated with the filler area;
the shell is provided with a gas inlet and a fluid outlet, and the gas inlet and the fluid outlet are communicated with the packing area.
Preferably, the rotary channel is arranged perpendicular to the rotary shaft.
Preferably, the sum of the diameters of the inlets of the plurality of rotating channels is equal to or less than the inner diameter of the hollow rotating shaft; the sum of the areas of the plurality of air holes is larger than or equal to the area of the gas inlet.
A sulfur recovery tail gas treatment device is provided with an incinerator, wherein the incinerator is provided with a tail gas inlet;
the gas outlet of the incinerator is connected with a supergravity machine or a desulfurizing tower;
a fluid outlet of the hypergravity machine or the desulfurizing tower is connected with a hypergravity oxidizing machine;
an alkali liquor storage tank is also arranged, and an alkali liquor outlet of the alkali liquor storage tank is connected with a fluid inlet of the hypergravity machine or the desulfurizing tower.
An alkali liquor circulating tank is connected between the fluid outlet of the hypergravity machine or the desulfurizing tower and the hypergravity oxidant.
Preferably, an oxidation fan is connected with a gas inlet of the supergravity oxidation machine.
Preferably, a heat exchanger is connected with the tail gas outlet of the incinerator.
Compared with the prior art, the technical scheme of the utility model have following advantage:
1. the utility model discloses a hypergravity oxidation machine, through link up the hollow pivot that the shell set up to have fluid passage on the axis of shell, and establish the sleeve that has the gas passage function at hollow pivot overcoat, still take shape simultaneously on this basis with the rotatory passageway that has spiral channel that packs the district intercommunication, realized that the fluid realizes the spin entering of fluid through rotatory passageway again behind the hollow pivot, and under the spin effort of rotatory effort, shearing force and fluid at the moment that gets into packs the district, axial velocity increases, produced centrifugal force pushes the fluid to the outer fringe, the fluid is cut, broken, the dispersion by the packing in the packing district in this process, thereby form micron to nanometer liquid film, liquid drop and liquid silk, produce huge, quick renewed phase interface, produce the flow contact in the packing of numerous crooked pore; at the moment, the gas with the oxidizing ability is crushed, torn and mixed in the packing area, so that the filling degree of gas-liquid contact is improved, and a good liquid oxidizing effect is obtained.
2. The supergravity oxidation machine of the utility model is further provided with a plurality of rotating channels, the sum of the diameters of the inlets of the rotating channels is equal to or less than the inner diameter of the hollow rotating shaft, thereby ensuring that the inner diameter of the rotating channel is in a proper interval and ensuring the self-rotating speed and the self-rotating state of the fluid, and further improving the full contact between the liquid in the filling area and the gas with oxidation capacity; in addition, the sum of the areas of the plurality of air holes is larger than or equal to the area of the air inlet, so that the air is further sufficiently and smoothly fed into the filler area through enough air hole distribution after the air is fed through the fluid inlet.
3. Sulfur recovery tail gas processing apparatus, be provided with and burn burning furnace, burn burning furnace and have the tail gas entry, burn the gas outlet connection of burning furnace and be provided with hypergravity machine or desulfurizing tower, the fluid outlet connection hypergravity oxidation machine of hypergravity machine still sets up the alkali lye holding vessel, the alkali lye export of alkali lye holding vessel and the fluid access connection of hypergravity machine. The high-gravity machine can be replaced by a desulfurizing tower. Through the arrangement, the acid gas treated by Claus is treated by the incinerator, SO that the hydrogen sulfide is converted into SO2The converted acid gas passes through a supergravity machine or a desulfurizing tower to realize the full reaction of the acid gas and the alkali liquor; then, a hypergravity oxidation machine is utilized, and through the mixing of salt solution (namely alkali liquor waste liquid) and air, sulfite is converted into harmless sulfate, so that the sulfur recovery tail gas treatment can completely meet the environmental requirements. The prior art hydrotreating and solvent absorption steps are omitted.
Drawings
In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of a supergravity oxidizer according to the present invention;
FIG. 2 is a schematic structural view of the sulfur recovery tail gas treatment device of the present invention.
The reference numbers in the figures denote: 1-shell, 2-rotating shaft, 3-fluid channel, 4-sleeve, 5-gas channel, 6-rotating channel, 7-packing cylinder, 8-packing area, 9-fluid inlet, 10-gas outlet, 11-gas inlet, 12-fluid outlet, 13-gas hole, 14-incinerator, 15-hypergravity machine, 16-hypergravity oxidation machine, 17-heat exchanger, 18-alkali liquor circulating tank and 19-oxidation fan.
Detailed Description
Example 1 hypergravity oxidizer
The supergravity oxidation machine, as shown in fig. 1, has a housing 1, a gas inlet 11 and a fluid outlet 12 are provided on the housing 1, the housing 1 is used for fixing the internal rotating structure and is matched with the rotating structure. For the rotating structure, that is, the hollow rotating shaft 2 driven by power is arranged on the central axis of the shell 1 and penetrates through the shell 1, and for the selection of power, the hollow rotating shaft 2 and the motor are connected to realize the driving rotation of the centering idle shaft 2 after the motor is started in the embodiment. In addition, a fluid inlet 9 is provided on the rotary shaft 2, and a sealing structure is provided in cooperation with the fluid inlet 9, and the rotary shaft 2 is of a hollow structure so that the hollow portion inside the rotary shaft 2 realizes the formation of the fluid passage 3. In the embodiment, the gas passage is arranged by sleeving the connecting sleeve 4 on the outer part of the rotating shaft 2 and the rotating shaft 2, so that a gas passage 5 is formed between the rotating shaft 2 and the inner wall of the sleeve 4, and the sleeve 4 is provided with a plurality of gas holes 13; the sleeve 4 is also provided with a gas outlet 10; a plurality of rotary passages 6 are provided in communication with the inside of the rotary shaft 2 and extending toward the sleeve 4, a spiral passage of a convex or concave shape is provided in the rotary passage 6, and the rotary passage 6 is provided through the sleeve 4.
In the present embodiment, it is preferable that a plurality of rotating passages 6 are arranged perpendicular to the rotating shaft 2, so that the flow of the fluid is more facilitated.
The hypergravity oxidation machine is further provided with a packing cylinder 7 coaxially sleeved with the rotating shaft 2 and the sleeve 4, the packing cylinder 7 is arranged outside the sleeve 4, a packing area 8 is formed in the packing cylinder 7, the packing area 8 is communicated with the rotating channel 6 and the air hole 13, and meanwhile, the packing area 8 is also communicated with the gas inlet 11 and the fluid outlet 12. In a packing section of thick bamboo 7, set up the filler according to actual need, the filler can wholly be filled, also can the multilayer be laid to set up packing district 8 into multilayer packing district 8, the purpose as long as can guarantee at hypergravity machine during operation, utilize rotatory realization to the rotatory cutting of gas, liquid under packing district 8 effect.
As a preferred embodiment, the sum of the inlet diameters of the plurality of the rotating passages 6 is preferably equal to or smaller than the inner diameter of the hollow rotating shaft 2. Of course, in actual engineering practice, it is necessary to set different inlet diameters and dimensional relationships of the idler shaft 2 depending on the object to be treated and the requirements for treatment effects. Likewise, it is preferable that the sum of the areas of the plurality of gas holes 13 is greater than or equal to the area of the gas inlet 11.
Furthermore, it is also preferred that the gas inlet 11 is arranged such that the gas enters tangentially.
The supergravity oxidation machine of the utility model is provided with a hollow rotating shaft with a fluid channel by penetrating the shell on the central axis of the shell when in work, and a sleeve with the function of a gas channel is sleeved outside the hollow rotating shaft, and a rotating channel with a spiral channel communicated with the packing area is formed on the basis, so that the fluid can enter the hollow rotating shaft in a self-rotating manner through the rotating channel, and the circumferential speed is increased under the action of the rotating force, the shearing force and the fluid spinning force at the moment of entering the packing area, the generated centrifugal force pushes the fluid to the outer edge, in the process, fluid is cut, crushed and dispersed by the filler in the filler area, so that a micron-to-nanometer liquid film, liquid drops and liquid filaments are formed, a huge and rapidly updated phase interface is generated, and flowing contact is generated in the filler of a plurality of bent channels; at the moment, the gas with the oxidizing ability is crushed, torn and mixed in the packing area, so that the filling degree of gas-liquid contact is improved, and a good liquid oxidizing effect is obtained.
Example 2 Sulfur recovery Tail gas treatment device
A sulfur recovery tail gas treatment device, as shown in FIG. 2, is provided with an incinerator 14, the incinerator 14 having a tail gas inlet;
a gas outlet of the incinerator 14 is connected with a supergravity machine 15;
the fluid outlet of the hypergravity machine 15 is connected with the fluid inlet of an alkali liquor circulating tank 18;
an alkali liquor outlet of the alkali liquor circulating tank 18 is connected with a fluid inlet of the hypergravity machine 15, and a salt solution outlet of the alkali liquor circulating tank 18 is connected with a fluid inlet of the hypergravity oxidation machine 16.
In a preferred embodiment, an oxidation fan 19 may be provided in connection with the gas inlet 11 of the supergravity oxidizer 16.
A heat exchanger 17 is preferably provided in connection with the off-gas outlet of the incinerator.
As an alternative embodiment, in the above embodiment, the high gravity machine 15 may be replaced with a desulfurization tower. Thereby connecting the fluid outlet of the desulfurizing tower with the fluid inlet of the alkali liquor circulating tank 18, and connecting the alkali liquor outlet of the alkali liquor circulating tank 18 with the fluid inlet of the desulfurizing tower.
As an alternative embodiment, the lye circulating tank 18 is not arranged, and the hypergravity oxidation machine 16 is directly connected and arranged at the fluid outlet of the hypergravity machine 15 or the desulfurization tower; meanwhile, an alkali liquor storage tank is also arranged, and an alkali liquor outlet of the alkali liquor storage tank is connected with the fluid inlet of the hypergravity machine 15 or the desulfurizing tower.
Sulfur recovery tail gas processing apparatus, at the during operation, acid gas after claus handles hydrogen sulfide wherein through burning furnace for hydrogen sulfide turns into SO2The converted acid gas passes through a supergravity machine or a desulfurizing tower to realize the full reaction of the acid gas and the alkali liquor; and then, a supergravity oxidation machine is utilized, and through the mixing of the salt solution and air, the sulfite in the salt solution is converted into harmless sulfate, so that the sulfur recovery tail gas treatment can completely meet the environmental requirements.
Although the present invention has been described in detail with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention encompassed by the appended claims.
Claims (6)
1. The tail gas treatment device is characterized by being provided with an incinerator, wherein the incinerator is provided with a tail gas inlet;
the gas outlet of the incinerator is connected with a supergravity machine or a desulfurizing tower;
a fluid outlet of the hypergravity machine or the desulfurizing tower is connected with a hypergravity oxidizing machine;
an alkali liquor storage tank is also arranged, and an alkali liquor outlet of the alkali liquor storage tank is connected with a fluid inlet of the hypergravity machine or the desulfurizing tower;
the hypergravity oxidation machine is provided with a shell, a hollow rotating shaft driven by power is arranged on a central axis of the shell and penetrates through the shell, a sealable fluid inlet is arranged on the rotating shaft, and a fluid channel is arranged in the rotating shaft; a sleeve is coaxially sleeved and connected with the rotating shaft outside the rotating shaft, so that a gas channel is formed between the rotating shaft and the inner wall of the sleeve, and a plurality of gas holes and gas outlets are formed in the sleeve; the rotating shaft faces the sleeve and is provided with a plurality of rotating channels in an extending mode, and convex or concave spiral channels are arranged in the rotating channels; the rotating channel is arranged through the sleeve;
a packing cylinder is coaxially sleeved with the rotating shaft and the sleeve, and a packing area is formed in the packing cylinder; the rotary channel and the air holes are communicated with the filler area;
the shell is provided with a gas inlet and a fluid outlet, and the gas inlet and the fluid outlet are communicated with the packing area.
2. The exhaust gas treatment device according to claim 1, wherein the rotary channel is arranged perpendicular to the rotation axis.
3. The exhaust gas treatment device according to claim 1 or 2, wherein the sum of the diameters of the inlets of the plurality of rotary passages is equal to or smaller than the inner diameter of the hollow rotary shaft;
the sum of the areas of the plurality of air holes is larger than or equal to the area of the gas inlet.
4. The tail gas treatment device according to claim 1, wherein a lye circulation tank is connected between the fluid outlet of the hypergravity machine or the desulfurization tower and the hypergravity oxidizing agent.
5. The tail gas treatment device according to claim 1 or 4, characterized in that an oxidation fan is arranged in connection with the gas inlet of the supergravity oxidizer.
6. The tail gas treatment device according to claim 1 or 4, wherein a heat exchanger is provided in connection with the tail gas outlet of the incinerator.
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| CN202120516842.8U Active CN215196251U (en) | 2020-06-18 | 2021-03-12 | Tail gas treatment device |
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| CN112973421A (en) * | 2020-06-18 | 2021-06-18 | 北京沃尔福环保科技有限公司 | Hypergravity oxidation machine and tail gas treatment device and process |
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| CN115178066B (en) * | 2022-08-24 | 2023-08-22 | 山东高瑞化工有限公司 | Comprehensive treatment system and treatment process for pyrazole inorganic waste gas |
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| CN100490942C (en) * | 2007-05-28 | 2009-05-27 | 北京中自控能源环境工程技术有限公司 | Ammonia method desulfurizing method and device |
| CN103418223A (en) * | 2013-07-26 | 2013-12-04 | 新汶矿业集团有限责任公司 | Comprehensive desulphurization technology in coal chemical industry |
| CN103831075B (en) * | 2013-12-24 | 2016-08-17 | 北京化工大学 | A kind of electric motor built-in hypergravity swinging bed device and application thereof |
| CN103754833B (en) * | 2014-01-26 | 2015-11-04 | 中建安装工程有限公司 | A kind of device and method utilizing oil refinery dry gas to produce Sodium sulfhydrate |
| CN105457463A (en) * | 2014-09-09 | 2016-04-06 | 江苏澄天环保科技有限公司 | Method and device for deep emission reduction of sulfur-bearing exhaust gas |
| CN105271132B (en) * | 2015-09-29 | 2017-10-13 | 山东三维石化工程股份有限公司 | The recovery technology of sulfur of SWSR 6 and device |
| CN206008083U (en) * | 2016-08-31 | 2017-03-15 | 北京沃尔福环保科技有限公司 | A kind of hypergravity machine |
| CN106744705B (en) * | 2017-02-16 | 2018-09-11 | 北京沃尔福环保科技有限公司 | A kind of tail gas of sulphur high gravity desulfurization device |
| CN108079762B (en) * | 2018-01-30 | 2020-07-24 | 中石化南京工程有限公司 | Flue gas desulfurization system and method for flue gas desulfurization by using same |
| CN108744932A (en) * | 2018-06-20 | 2018-11-06 | 北京化工大学 | One kind removing from industrial smoke or tail gas and recycle SO2Device and technique |
| CN112973421A (en) * | 2020-06-18 | 2021-06-18 | 北京沃尔福环保科技有限公司 | Hypergravity oxidation machine and tail gas treatment device and process |
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| CN112973421A (en) * | 2020-06-18 | 2021-06-18 | 北京沃尔福环保科技有限公司 | Hypergravity oxidation machine and tail gas treatment device and process |
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