CN110124458A - Methanol air water cleaning of evaporator - Google Patents
Methanol air water cleaning of evaporator Download PDFInfo
- Publication number
- CN110124458A CN110124458A CN201810127357.4A CN201810127357A CN110124458A CN 110124458 A CN110124458 A CN 110124458A CN 201810127357 A CN201810127357 A CN 201810127357A CN 110124458 A CN110124458 A CN 110124458A
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- Prior art keywords
- methanol
- back cavity
- gas
- tank body
- horizontal
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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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of methanol air water cleaning of evaporator, including horizontal tank body, horizontal top of the tank is equipped with the import of methanol gas and clean gas outlet, bottom is equipped with purification water inlet, clean gas outlet is equipped with overflow water out adjacent to end socket, buffering back cavity is equipped in the middle part of horizontal tank inner chamber, buffering back cavity top is gas-phase space, lower part is washing space, it buffers and opens up tubule mounting hole on the top plate and bottom plate of back cavity, for installing purified gas riser and reflux bend pipe, reflux bend pipe connection buffering back cavity and washing space, purified gas riser connection washing space and gas-phase space.Using methanol air water cleaning of evaporator of the invention, the mode that buffering can be made full use of to combine with airflow uniform distribution reaches the washing of methanol gas and flows steady, good absorption effect.
Description
Technical field
The invention belongs to the methanol gas disposal technology in gas purification technique field, in particular to a kind of methanol air water is washed
Tank.
Background technique
Methanol has a wide range of applications in petrochemical industry, is not only important industrial chemicals, but also is that performance is excellent
The good energy and vehicle fuel.With the rise of coal chemical industry, methanol more highlights its important value as intermediate raw material.Methanol has
The toxicity of toxicity, methanol influences maximum to the nervous system of human body and hematological system, it takes in through alimentary canal, respiratory tract or skin
Toxic reaction will be generated, the respiratory mucosa and eyesight that methanol vapor energy loss victimizes.It must be worn in the work on the spot for having methanol gas
Breathing mask.
The storage tank that petrochemical industry is used to store methanol is passed through frequently with nitrogen-sealed, and storage tank can be discharged when superpressure is discharged
Harmful gas containing methanol (mixed gas of methanol gas and nitrogen) out, it is necessary to can just be discharged into atmosphere by purified treatment.Currently, often
Method that the characteristics of being dissolved each other completely using methanol and water is washed with water handles gas containing methanol (and methanol gas).Chinese patent
CN104275073A discloses a kind of methanol aspiration method and device, has been horizontally disposed in horizontal water washing tank used with sieve
The methanol tracheae in hole and fresh water pipe with sieve pore.Methanol tracheae with sieve pore be located at water-bath water in water washing tank surface it
Under, the fresh water pipe with sieve pore is arranged in water-bath water surface.Fresh length of pipe with sieve pore, which is greater than, has sieve pore
Methanol tracheae length, with sieve pore fresh water pipe sieve pore spray radiation areas envelope methanol air sifter bore region.Normally
In the case of, methanol gas is absorbed by water-bath；Methanol gas is eluted when saturation state needs to replace when methanol aqueous solution reaches
Washing.When water-bath absorbs, methanol gas is entered in water-bath water by the methanol tracheae with sieve pore to be absorbed.But the technology exists as follows
Problem: (1) gas containing methanol does not have enough spaces to be buffered after entering the methanol tracheae with sieve pore, the pressure in pipe everywhere
It fluctuates larger；(2) when gas containing methanol from sieve pore flow out when air-flow it is unstable, uneven, be easy from sieve pore nearby escape and
The sieve pore airless of distant place, movement disorder are poor with the contact condition of washing water.
Summary of the invention
The object of the present invention is to provide a kind of methanol air water cleaning of evaporator, to solve, gas-liquid contact in the prior art is uneven, wave
The problems such as dynamic violent, water washing effect is poor.Using methanol air water cleaning of evaporator of the invention, incoming flow methanol gas can sufficiently be buffered,
By bath wash with elution be combined with each other in the way of, promote methanol gas and washing water high-efficient contact, reach the washing of methanol gas
Flow steady, good absorption effect.
The specific technical solution of the present invention is as follows:
A kind of methanol air water cleaning of evaporator, including horizontal tank body, horizontal tank body is by horizontal cylindrical shape cylinder and positioned at the end socket at its both ends
Composition, it is characterised in that: the horizontal top of the tank is equipped with the import of methanol gas and clean gas outlet, and horizontal tank base is equipped with net
Change water inlet, clean gas outlet is equipped with overflow water out adjacent to end socket, and horizontal tank inner chamber center portion is equipped with buffering back cavity,
It is gas-phase space above water seal water liquid level in horizontal tank body, lower section is washing space, and buffering back cavity includes bottom plate and top plate, bottom
Plate and top plate are horizontally disposed rectangular flat plate structure, and long side edge is connected with the side wall of horizontal tank body, long side edge
Length is equal with the horizontal cylindrical shape barrel lenght of horizontal tank body, bottom plate it is concordant with top plate both ends and using two vertical plates sealing from
And the cushion space of buffering back cavity is formed, it buffers and opens up tubule mounting hole on the top plate and bottom plate of back cavity, for installing
Purified gas riser and reflux bend pipe, reflux bend pipe connection buffering back cavity and washing space.
The present invention is further technically characterized in that the methanol gas import connection methanol gas inlet pipe, methanol gas inlet pipe
Bottom is protruded into buffering back cavity, and methanol gas import is located at horizontal tank body top center straight down.
The present invention is further technically characterized in that the clean gas outlet is located at horizontal tank body top side and pacifies straight up
Dress, purification water inlet are located at horizontal tank base and install straight up, purified on horizontal length of tank direction water inlet with only
Change the two sides that gas outlet is located at the import of methanol gas, overflow water out is horizontally mounted, and vertical position is in water seal water liquid level or less.
The present invention be further technically characterized in that the purification water inlet and clean gas outlet and neighbouring head bend line away from
From being 0.2~0.5 times of horizontal tank diameter.
The present invention be further technically characterized in that the overflow water out vertical position be in water seal water liquid level or less 50~
100mm。
The present invention is further technically characterized in that the width of the buffering back cavity is the 0.6~0.8 of horizontal tank diameter
Times, buffering back cavity is fixed on horizontal inner tank wall by fixed floor.
The present invention is further technically characterized in that the diameter of the tubule mounting hole is 20~50mm, and tubule mounting hole is in
Square arrangement is covered with the bottom plate and top plate of entire buffering back cavity, and the spacing between adjacent tubule mounting hole is tubule mounting hole
1~1.5 times of diameter.
The present invention be further technically characterized in that on buffering back cavity corresponding position occupied by methanol gas import without
The arrangement of purified gas riser and reflux bend pipe.
The present invention is further technically characterized in that the reflux bend pipe is made of 180 ° of bend pipes, short straight tube and long straight tube, short
For the setting of straight tube bottom end on buffering back cavity top plate, top connects one end of 180 ° of bend pipes, and the other end of bend pipe connects long straight tube
Top, long straight tube bottom end are passed down through buffering back cavity and protrude into washing water liquid level or less.
The present invention is further technically characterized in that the diameter of the reflux bend pipe is 20~50mm, and every 2~5 reflux are curved
Pipe forms one group and forms a line, and reflux winding pipe exit generally protrudes into 50~100mm of liquid level or less, and purified gas riser is short straight tube
Structure is vertically arranged, and the diameter of purified gas riser is 20~50mm, and every 4~10 purified gas riseies are formed as one group
One column, each group of reflux bend pipe and each group of purified gas riser, which are alternately arranged, is covered with entire buffering back cavity.
Present invention is mainly used for the gas containing methanol to industries such as petrochemical industries to wash, and is equally applicable to liquid ammonia storage tank row
The washing process of deflation (ammonia level is below 20%) etc..
Compared with the prior art, the invention has the following beneficial effects: methanol gas has enough in the cushion space being specially arranged
Space and the residence time buffered, methanol stream is dynamic steady after buffering, be evenly distributed, pressure oscillation everywhere not
Greatly, can with certain speed from reflux bend pipe steady, the contact shape evenly into being washed in washing water, with washing water
Condition is preferable, and washing water will not be made biggish irregular fluctuation occur, achievees the purpose that improve water washing effect.Purified gas after washing
Also washing water ullage can more smoothly be escaped into.
With the drawings and specific embodiments, the present invention is described in further detail below, but is not intended to limit of the invention
Range.
Detailed description of the invention
Fig. 1 is that a kind of methanol air water cleaning of evaporator of the present invention is main to structural schematic diagram.
Fig. 2 is a kind of internal component 3-D view of methanol air water cleaning of evaporator of the present invention.
Fig. 3 is a kind of methanol air water cleaning of evaporator cushion chamber 3-D view of the present invention.
Fig. 4 is a kind of methanol air water cleaning of evaporator purified gas riser structural schematic diagram of the present invention.
Fig. 5 be in Fig. 1 A-A to section view.
Fig. 6 is a kind of methanol air water cleaning of evaporator reflux bend pipe main view of the present invention.
Fig. 7 is B-B direction section view in Fig. 1.
Same reference numerals indicate identical technical characteristic in Fig. 1~7.
Wherein, in Fig. 1~7: 1- methanol gas import, the horizontal tank body of 2-, 3- clean gas outlet, 4- purify water inlet, and 5- overflows
Flowing water outlet, 6- buffer back cavity, 7- methanol gas inlet pipe, 8- reflux bend pipe；9- purified gas riser, 10- tubule mounting hole,
11- end socket, 12- liquid level, 13- wash space, 14- gas-phase space, 15- short straight tube, 16- bend pipe, 17- long straight tube.
Specific embodiment
Referring to Fig. 1~5, a kind of methanol air water cleaning of evaporator of the present invention, including horizontal tank body 2, horizontal tank body 2 is by horizontal cylindrical shape
Cylinder and positioned at its both ends end socket 11 form.Methanol gas import 1 and clean gas outlet 3, horizontal tank are equipped at the top of horizontal tank body 2
2 bottom of body is equipped with purification water inlet 4, and clean gas outlet 3 is equipped with overflow water out 5, horizontal 2 inner cavity of tank body center adjacent to end socket
Portion is equipped with buffering back cavity 6, is gas-phase space 14 above water seal water liquid level 12 in horizontal tank body 2, and lower section is washing space 13, delays
Rushing back cavity 6 includes bottom plate and top plate, and bottom plate and top plate are horizontally disposed rectangular flat plate structure, long side edge with it is horizontal
The side wall of tank body 2 is connected, and the length of long side edge is equal with the horizontal cylindrical shape barrel lenght of horizontal tank body 2, bottom plate and top plate
Both ends are concordant and seal to be formed the cushion space of buffering back cavity 6 using two vertical plates, buffer top plate and the bottom of back cavity 6
Tubule mounting hole 10 is opened up on plate, for installing purified gas riser 9 and reflux bend pipe 8, the reflux connection buffering reflux of bend pipe 8
Chamber 6 and washing space 13.
The methanol gas import 1 connects methanol gas inlet pipe 7, and 7 bottom of methanol gas inlet pipe is protruded into buffering back cavity 6,
Methanol gas import 1 is normally at horizontal 2 top center of tank body through buffering back cavity 6 straight down.
The clean gas outlet 3 is located at horizontal tank body top side and installs straight up, and purification water inlet 4 is located at horizontal tank
2 bottom of body is installed straight up, purified on horizontal 2 length direction of tank body water inlet 4 and clean gas outlet 3 be located at methanol gas into
The two sides of mouth 1, and close to end socket, 2 diameter of horizontal tank body of neighbouring 0.2~0.5 times of 11 tangent line of end socket of distance.Overflow water out 5
It is horizontally mounted on horizontal side end socket 11 of the tank body 2 far from purification water inlet 4, vertical position is in water seal water liquid level 12
50~100mm below, the small water seal of overflow water out installation control water washing tank liquid level.It crouches as shown, purification water inlet 4 is located at
2 left side of formula tank body, the distance of 11 tangent line of left side end socket are 0.2~0.5 times of horizontal 2 diameter of tank body；Clean gas outlet 3 is located at horizontal
2 right side of tank body, the distance of 11 tangent line of right side end socket are 0.2~0.5 times of horizontal 2 diameter of tank body.
The buffering back cavity 6 is the cushion space of rectangular shape, length and the horizontal tank body 2 of buffering back cavity 6
Horizontal cylindrical shape barrel lenght, two end faces in the longitudinal direction are concordant with 11 tangent line of end socket, and the width of buffering back cavity 6 is
The geometric center of 0.6~0.8 times of horizontal 2 diameter of tank body, the geometric center and horizontal tank body 2 that buffer back cavity 6 is generally overlapped,
Buffering back cavity 6 is fixed on horizontal 2 inner wall of tank body by modes such as fixed floors.
The diameter of the tubule mounting hole 10 is about 20~50mm, and the square arrangement of tubule mounting hole is covered with entire buffering
The bottom plate and top plate of back cavity 6,1~1.5 times for being spaced about 10 diameter of tubule mounting hole between adjacent tubule mounting hole 10.
Methanol gas import 1 is located at the roof center of buffering back cavity 6, buffers on back cavity 6 occupied by methanol gas import 1
Arrangement of the corresponding position without purified gas riser 9 and reflux bend pipe 8.
Reflux bend pipe 8 is made of 180 ° of bend pipes 16, short straight tube 15 and long straight tube 17, and the setting of 15 bottom end of short straight tube is buffering back
It flows on 6 top plate of chamber, top connects one end of 180 ° of bend pipes 16, and the other end of bend pipe 16 connects long 17 top of straight tube, long straight tube 17
Bottom end is passed down through buffering back cavity 6 and protrudes into washing water liquid level 12 hereinafter, i.e. reflux 8 entrance of bend pipe is located at buffering back cavity 6 top
12 or less washing water liquid level is protruded into across buffering 6 bottom plate of back cavity in plate, outlet.The bend pipe 8 that flows back is connection buffering 6 cavity of back cavity
Diameter with the channel of washing water, the bend pipe 8 that flows back is about 20~50mm.Every 2~5 reflux bend pipes form one group and form a line,
Reflux bend pipe 8, which exports, generally protrudes into 12 or less 50~100mm of liquid level.Air velocity in reflux bend pipe 8 is generally 0.2~
0.5m/s.Baffling is upwards from buffering 6 top plate of back cavity after reflux bend pipe impacts methanol gas on buffering 6 bottom plate of back cavity
Outflow, entire buffering 6 bottom plate of back cavity are all used as the impact baffle plate of methanol gas, and the air-flow at methanol pneumatic jack plate is compared with methanol gas bottom
Flow field at plate is more steady, therefore largely improves the buffering effect of methanol gas.
Purified gas riser 9 is short straight tube structure, is vertically arranged, the diameter of purified gas riser 9 is about 20~50mm.Only
Change 9 entrance of gas lift tracheae and be located at buffering 6 bottom plate of back cavity, outlet is located at buffering 6 top plate of back cavity, and purified gas riser 9 is net
Change the rising passway that gas ascends into gas-phase space 14 after washing by washing space 13, every 4~10 purifications gas lift gas
Pipe 9 is arranged as one group of formation one.
Each group of reflux bend pipe 8 and each group of purified gas riser 9, which are alternately arranged, is covered with entire buffering back cavity 6.
The material of each component of the present invention is generally stainless steel (such as 304 stainless steels), and the connection between component generally uses
Welding.
The course of work washed using above-mentioned methanol air water cleaning of evaporator to methanol gas is as follows: methanol gas (content first
20% hereinafter, remaining is the inert gases such as nitrogen) enter buffering back cavity 6 from methanol gas import 1 and carries out stable buffering flow field；
After buffering by buffering back cavity 6, methanol gas turns to 180 degree from buffering 6 top plate of back cavity outflow by methanol gas reflux bend pipe 8
After flow downward into washing water washing space 13 carry out washing operation；Purified gas after washing is by purification gas lift gas
Gap between pipe 9 and buffering back cavity 6 and 2 inner wall of horizontal type shell ascends into gas-phase space 14, the purified gas of purified gas
Outlet 3 is discharged into atmosphere, and the purified water inlet 4 of washing water enters washing space 13 and carries out moisturizing formation running water, washing waste water warp
Overflow water out 5 flows out horizontal tank body 2, and the small water seal of installation is not shown in washing water liquid level 12(figure for controlling at overflow water out 5
Out).
Claims (10)
1. a kind of methanol air water cleaning of evaporator, including horizontal tank body (2), horizontal tank body (2) by horizontal cylindrical shape cylinder and be located at its two
The end socket (11) at end forms, it is characterised in that: is equipped with methanol gas import (1) and clean gas outlet at the top of the horizontal tank body (2)
(3), horizontal tank body (2) bottom is equipped with purification water inlet (4), and clean gas outlet (3) neighbouring end socket (11) goes out equipped with overflow water
Mouth (5), the positive middle part in horizontal tank body (2) inner cavity are equipped with buffering back cavity (6), horizontal interior water seal water liquid level (12) top of tank body (2)
For gas-phase space (14), lower section is washing space (13), and buffering back cavity (6) includes bottom plate and top plate, and bottom plate and top plate are
Horizontally disposed rectangular flat plate structure, long side edge are connected with the side wall of horizontal tank body (2), the length of long side edge with it is horizontal
The horizontal cylindrical shape barrel lenght of tank body (2) is equal, and bottom plate is concordant with top plate both ends and seals to be formed using two vertical plates
The cushion space of back cavity (6) is buffered, buffers and opens up tubule mounting hole (10) on the top plate and bottom plate of back cavity (6), be used for
Purified gas riser (9) and reflux bend pipe (8), reflux bend pipe (8) connection buffering back cavity (6) and washing space (13) are installed.
2. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the methanol gas import (1) connects first
Alcohol gas inlet pipe (7), methanol gas inlet pipe (7) bottom are protruded into buffering back cavity (6), and methanol gas import (1) is located at horizontal tank
Body (2) top center is straight down.
3. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the clean gas outlet (3) is located at sleeping
Formula tank body (2) top side is installed straight up, and purification water inlet (4) is located at horizontal tank body (2) bottom and installs straight up,
The two sides that water inlet (4) and clean gas outlet (3) are located at methanol gas import (1), overflow are purified on horizontal tank body (2) length direction
Water out (5) is horizontally mounted, and vertical position is in water seal water liquid level (12) below.
4. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the purification water inlet (4) and purification
It is 0.2~0.5 times of horizontal tank body (2) diameter that gas, which exports (3) at a distance from neighbouring end socket (11) tangent line,.
5. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the vertical position of the overflow water out (5)
It sets and is in water seal water liquid level (12) 50~100mm below.
6. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the width of buffering back cavity (6)
It is 0.6~0.8 times of horizontal tank body (2) diameter, buffering back cavity (6) is fixed on horizontal tank body (2) inner wall by fixed floor
On.
7. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the diameter of the tubule mounting hole (10)
For 20~50mm, the square arrangement of tubule mounting hole (10) is covered with the bottom plate and top plate of entire buffering back cavity (6), adjacent small
Spacing between pipe mounting hole (10) is 1~1.5 times of tubule mounting hole (10) diameter.
8. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: buffering back cavity (6) on methanol gas into
Arrangement of the corresponding position occupied by mouth (1) without purified gas riser (9) and reflux bend pipe (8).
9. a kind of methanol air water cleaning of evaporator according to claim 1, it is characterised in that: the reflux bend pipe (8) is curved by 180 °
(16), short straight tube (15) and long straight tube (17) composition are managed, the setting of short straight tube (15) bottom end is on buffering back cavity (6) top plate, top
One end of 180 ° of bend pipes (16) of end connection, the other end of bend pipe (16) connect long straight tube (17) top, long straight tube (17) bottom end to
Under across buffering back cavity (6) protrude into washing water liquid level (12) below.
10. according to claim 1 or a kind of methanol air water cleaning of evaporator described in 9, it is characterised in that: reflux bend pipe (8) it is straight
Diameter is 20~50mm, and every 2~5 reflux bend pipes form one group and form a line, and liquid level (12) is protruded into below in reflux bend pipe (8) outlet
50~100mm, purified gas riser (9) they are short straight tube structure, are vertically arranged, the diameter of purified gas riser (9) is 20~
50mm, every 4~10 purified gas riseies (9) arrange as one group of formation one, each group of reflux bend pipe (8) and each group of purified gas
Riser (9), which is alternately arranged, is covered with entire buffering back cavity (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127357.4A CN110124458A (en) | 2018-02-08 | 2018-02-08 | Methanol air water cleaning of evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810127357.4A CN110124458A (en) | 2018-02-08 | 2018-02-08 | Methanol air water cleaning of evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110124458A true CN110124458A (en) | 2019-08-16 |
Family
ID=67567303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810127357.4A Pending CN110124458A (en) | 2018-02-08 | 2018-02-08 | Methanol air water cleaning of evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110124458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832595A (en) * | 2022-04-11 | 2022-08-02 | 福建德尔科技股份有限公司 | Electronic grade sulfur hexafluoride alkali washing device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050214187A1 (en) * | 2002-10-01 | 2005-09-29 | Airborne Industrial Minerals, Inc. | Removal of Hg, NOx, and SOx with using oxidants and staged gas/liquid contact |
| CN201701843U (en) * | 2010-05-31 | 2011-01-12 | 西安昊芯自动化工程有限公司 | Blowing-bath type dust collection desulfurizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832595A (en) * | 2022-04-11 | 2022-08-02 | 福建德尔科技股份有限公司 | Electronic grade sulfur hexafluoride alkali washing device and control method thereof |
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Application publication date: 20190816 |