CN103316580A - Viscose fiber desulfuration and recovery device and method - Google Patents
Viscose fiber desulfuration and recovery device and method Download PDFInfo
- Publication number
- CN103316580A CN103316580A CN2013102972681A CN201310297268A CN103316580A CN 103316580 A CN103316580 A CN 103316580A CN 2013102972681 A CN2013102972681 A CN 2013102972681A CN 201310297268 A CN201310297268 A CN 201310297268A CN 103316580 A CN103316580 A CN 103316580A
- Authority
- CN
- China
- Prior art keywords
- alkali
- spray column
- alkali spray
- waste gas
- absorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a viscose fiber desulfuration and recovery device and a method thereof. The device comprises a recovery system and an alkali measuring and dosing system which communicate with each other. The recovery system is respectively connected with an acid mist removal device, a blower fan and alkali spray towers. The invention also provides a method for removing H2S and recovering available NaHS by the use of the device. According to the device and the method, on-off of each valve on the alkali spray towers can be automatically controlled and adjusted. The alkali spray towers are directly switched to a tandem-connection or drainage and alkali measuring and dosing state. Thus, drainage among the alkali spray towers is avoided, the process is continuously carried out, production process is simplified, utilization rate of equipment is raised, and energy is saved.
Description
Technical field
The present invention relates to a kind of H
2
The retracting device of S gas and recovery method are specifically related to a kind of retracting device and recovery method that adopts alkali to absorb the hydrogen sulfide gas in the production of removal viscose rayon and reclaimed available NaHS recovery liquid.
Background technology
Hydrogen sulfide (the H that contains higher concentration in the waste gas that discharges in the production process of viscose fiber
2
S) and carbon disulfide (CS
2
) gas.Process gas is not done directly discharging of recycling; not only can cause the larger wasting of resources, cause the plant produced manufacturing cost to increase, also can cause more serious pollution to factory and surrounding enviroment; these energy-saving and emission-reduction of advocating with country, the policy of protection of the environment are runed counter to, thus recycle imperative.
Absorption process commonly used is with the hydrogen sulfide (H in the akaline liquid spray-absorption waste gas at present
2
S) gas, advantage is: the waste gas recoverable has obvious economic benefit.
Chinese patent 201020137039.0 discloses and a kind ofly contains high concentration H by what produce in the viscose fiber production
2
S removes the industrial waste gas of producing NaHS and processes retracting device, and its advantage is to realize the circulation of alkali lye, energy savings, and realize H
2
S moves towards high concentration from the low concentration of alkali lye, makes H
2
Removing of S is more thorough.Shortcoming is need be constantly the alkali absorption liquid to be imported secondarys from three grades, and secondary imports one-level, and production technology can not well be carried out continuously.
Summary of the invention
The present invention mainly solves the deficiencies in the prior art, and a kind of improvement waste gas absorption method and apparatus is provided, and whole production technology is carried out continuously, has simplified production procedure, improves the utilization rate of equipment, has saved simultaneously the energy.
The present invention adopts following technical scheme:
A kind of sulphur removal retracting device, this device comprise recovery system and join the alkali system, described recovery system and join the alkali system and be connected; Described recovery system comprises deacidification day with fog, blower fan and the alkali spray column that connects successively; The described alkali system of joining comprises alkali-prepared tank and joins alkali pump;
The bottom inlet of described deacidification day with fog fetches the H that contains from the workshop
2
S and CS
2
Exhaust piping, the upper inlet of deacidification day with fog fetches salkali waste pipeline from the salkali waste liquid bath, the top waste gas outlet is connected with the blower fan import; Deacidification day with fog middle and upper part is filled with corrugated regular filler;
Described blower fan is centrifugal high pressure fan;
Described alkali spray column is the structure that top small cylinder is connected with following large cylinder, and small cylinder is connected by a round platform with large cylinder, be connected to little lower wide little round platform on above the small cylinder, alkali spray column tower is equipped with from top to bottom successively: alkaline flushing pipe, demist corrugated regular filler, alkali shower, corrugated regular filler and circulation fluid storage tank.
Described sulphur removal retracting device, comprise at least three alkali spray columns, each alkali spray column all is connected with waste gas and enters pipe and waste gas serises connecting tube and be connected to valve, waste gas enters pipe and the waste gas serises connecting tube is parallel with one another respectively, each alkali spray column also is connected to separately the alkali circulating pump and circulation is taken over, and the circulation fluid storage tank of each alkali spray column is connected to alkali liquor inlet; Described waste gas enters Guan Jun and is connected in fan outlet.
The described alkali system of joining is provided with alkali lye import and soft water import, and the described alkali system of joining links to each other with the alkali spray column by lye pump.
Described sulphur removal retracting device also comprises automatic control system, described deacidification day with fog, high pressure positive blower, alkali spray column, alkali-prepared tank and each pump be connected valve and all be connected with automatic control system, and be subjected to automatic controlling system.
Sulphur removal retracting device of the present invention removes H
2
S also reclaims available NaHS method.At first, remove part of sulfuric acid acid gas and steam through deacidification fog first by the waste gas that the workshop is come, send into the alkali spray column by high pressure positive blower again, described alkali spray column has three of same structure, wherein two form the secondary serial connection, and another alkali spray column carries new alkali lye for subsequent use to the circulation fluid storage tank of tower bottom by joining alkali pump.The waste gas absorption of the beginning first round: the waste gas of being sent here by high pressure positive blower is concatenated into second level alkali spray column again through first order alkali spray column, and waste gas is through the constantly alkali lye contact of circulation of alkali spray column circulating pump of secondary, H
2
S is by alkali liquor absorption, the contained H of waste gas
2
S is less than 10ppm and is transported to another operation through second level alkali spray column outlet and is CS
2
Absorption reclaim.Described first order alkali spray column constantly absorbs H
2
S gas finally detects circulation fluid NaHS content to 22%, and the alkali that stops first order alkali spray column absorbs.The second waste gas absorption of taking turns: the second level alkali spray column of the first round is switched to the second one-level alkali spray column of taking turns, first round alkali spray column for subsequent use is switched to the second alkali spray column of taking turns, described switching is exactly that the waste gas of high pressure positive blower outlet is accessed the second first order alkali spray column of taking turns automatically, the second automatic access of first order outlet waste gas second secondary alkali spray column of taking turns of taking turns.The NaHS of former first order alkali spray column is transported to evaporation, crystallization, slicing process through the alkali circulating pump and makes the NaHS tablet and recycle.The circulating slot of airfree first order alkali spray column carries new alkali lye as the second alkali for subsequent use absorption tower of taking turns by joining alkali pump again.Described sulphur removal recovery method is exactly constantly after the absorption of one-level alkali absorption tower is finished, secondary alkali spray column is switched to the one-level alkali spray column of a new round, alkali spray column for subsequent use switches to the secondary alkali spray column of a new round, the one-level alkali spray absorber that absorption is finished is derived the NaHS absorption liquid, the idle loop groove refills new alkali lye as stand-by still, so move in circles, guarantee carrying out continuously of whole production technology.
The present invention adopts secondary serial connection, alkali spray absorber serial connection in the second level is used be new alkali lye as the beginning absorption liquid, guarantee a small amount of unabsorbed H
2
S is absorbed again;
Chemical equation is: H
2
S+2NaOH---→ Na
2
S+2H
2
O
First order alkali spray absorber since in the absorption process of previous round as second level alkali spray absorber, so absorption liquid mainly is Na
2
S;
Chemical equation is: Na
2
S+H
2
S---→ 2NaHS
This device is owing to adopting concentration of lye and H
2
The concentration of S gas is reciprocal trend, has therefore guaranteed H
2
The high efficiency that S absorbs.
By the above-mentioned description of this invention as can be known, be compared with existing technology, the invention has the advantages that:
Automatic control system is regulated the keying of each valve on the alkali spray column, directly the alkali spray column is switched to serial connection or drain, joins the alkali state, has removed the process of the mutual drain of alkali spray column from, technique is carried out continuously, simplify production procedure, improved the utilization rate of equipment, saved simultaneously the energy.
Automatic control system of the present invention can adopt Single-chip Microprocessor Auto control, and the man-machine interface operation can show the working condition with monitoring system in real time; According to different operating modes, system can design multiple tracks and automatically control security alarm and chain protection, makes whole flow operations simple, stable, safe and reliable.
Description of drawings
Fig. 1 is sulphur removal retracting device general flow chart.
The specific embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
With reference to Fig. 1, the sulphur removal retracting device, comprise successively the deacidification day with fog 1 that connects, high pressure positive blower 2, three alkali spray columns 31,32,33, alkali-prepared tank 4, join alkali pump 5, it comprises that also a cover is used for regulating and control the automatic control system (not shown in FIG.) of above-mentioned each parts.The entrance of deacidification day with fog 1 is connected with the exhaust piping in workshop, the outlet of deacidification day with fog 1 is connected with high pressure positive blower 2, the outlet of high pressure positive blower 2 is connected with alkali spray column 31,32,33 entrances simultaneously, and alkali spray column 31,32,33 outlet are connected to by corresponding three-way control valve 351,352,353 is sent to CS
2
Pipeline between the absorption recovery vehicle.
The waveform structured packing is equipped with in deacidification day with fog 2 middle and upper parts, alkali spray column 31,32, the 33rd, and the structure of large cylinder below the small cylinder above, small cylinder is connected a round platform and connects with large cylinder, be connected to little lower wide little round platform on above the small cylinder.Alkali spray column 31,32,33 is equipped with from top to bottom successively: alkaline flushing pipe, demist corrugated regular filler, alkali shower, corrugated regular filler, circulation fluid storage tank.
Alkali-prepared tank 4 is connected to a NaOH import and a soft water import, and alkali-prepared tank 4 outlets connect joins alkali pump 5.Join alkali pump 5 outlet and be connected to three alkali spray columns 31,32,33 circulation fluid storage tank.
Alkali spray column 31,32,33 is equipped with respectively circulating pump 341,342,343, one of circulating pump 341,342,343 effects are to carry alkali lye flushing demist waveform structured packing and carry alkali lye to shower, and circulating pump 341,342,343 another one effects are to absorb H when alkali spray column 31,32,33
2
S carries NaHS liquid to NaHS basin (not shown in FIG.) after required 22%NaHS concentration.
Alkali spray column 31,32,33 is equipped with respectively exhaust gas inlet pipe 311,321,331, and the triple feed inlet pipe is connected to respectively three-way control valve 361,362,363, triple feed inlet pipe 311,321,331 outlets of receiving high pressure positive blower 2 parallel with one another.
Alkali spray column 31,32,33 is equipped with respectively serises connecting tube 312,322,332, three serises connecting tubes and connects respectively blow-off tee control valve 351,352,353 and exhaust gas inlet three-way control valve 361,362,363, three serises connecting tubes 312,322,332 parallel with one another.
Alkali spray column 31,32,33 has identical structure and identical override formats, therefore, has identical function as first order alkali spray column, second level alkali spray column or alkali spray column for subsequent use.
Continuation is with reference to Fig. 1, and sulphur removal recovery method, three alkali spray columns 31,32,33 have same function can be as first order alkali spray column, second level alkali spray column or alkali spray column for subsequent use, and reciprocally carries out by turns.The mode of supposing absorption first round alkali spray column is first order alkali spray column 31, second level alkali spray column 32, alkali spray column 33 for subsequent use, and corresponding concrete operation step is as follows: the workshop is come contains H
2
S and CS
2
Waste gas is removed most sulfuric acid mist and steam by the waveform structured packing of deacidification day with fog 1 first, carried through high pressure positive blower 2 by the outlet of deacidification day with fog 1 again, enter alkali spray column 31 through three-way control valve 361, the alkali circulation fluid that is sent under the shower spray of tower middle and upper part with circulating pump 341 carries out chemical reaction, H
2
The S major part is absorbed by alkali, absorption liquid falls into the alkali circulating slot of alkali spray column 31 bottoms, waste gas seals in alkali spray column 32 through three-way control valve 351 to three-way control valve 362 by tower top outlet, waste gas carries out chemical reaction with alkali circulation fluid that corresponding alkali circulating pump 342 is transported under the shower spray of tower middle and upper part in alkali spray column 32, absorption liquid falls into alkali circulating slot at the bottom of the tower, the H in the waste gas
2
S is by alkali liquor absorption, and concentration is less than 10ppm, finally by the three-way control valve 352 arrival CS of top of tower
2
Recovery process.In addition, at alkali lye is sent into alkali spray column 33 bottoms through joining alkali pump 5 the alkali circulating slot of joining of alkali-prepared tank 4.When the detection of the alkali circulation fluid NaHS of first order alkali spray column 31 concentration reaches 22%, enter second and take turns.Switch the first order alkali spray column 31 of the first round as stand-by still, the alkali spray column 32 that switches the first round is first order spray column, and the stand-by still 33 that switches the first round is second level spray column.The second concrete operations of taking turns are as follows: close three-way control valve 361 and close cat head three-way control valve 351, close circulating pump 341 and related valve, open three-way control valve 362 and make the waste gas of blower fan conveying enter alkali spray column 32, switching three-way control valve 352 is from the waste air state to string tubulose attitude.Start alkali circulating pump 343 and relevant valve, open three-way control valve 363 and be the string form of tubes, open three-way control valve 353 and be the discharging waste gas state.Start alkali circulating pump 341, open the related valve that alkali circulating pump 341 leads to the NaHS basin, the 22%NaHS of alkali spray column 31 is all delivered to the NaHS basin, from alkali-prepared tank 4, extract alkali circulating slot that new alkali lye sends into spray column 31 bottoms out to the liquid level of regulation by joining alkali pump 5, close all associated pump and the valve of alkali spray column 31, alkali spray column 31 is as for subsequent use.In like manner, when third round begins, switch the second first order alkali spray column 32 of taking turns as stand-by still, switch the second alkali spray column of taking turns 33 and be first order spray column, the stand-by still 31 that switches the first round is second level spray column.Three alkali spray columns hocket and so forth, and whole flow process is run without interruption continuously.
Claims (5)
1. sulphur removal retracting device is characterized in that:
This device comprises recovery system and joins the alkali system, described recovery system and join the alkali system and be connected; Described recovery system comprises deacidification day with fog, blower fan and the alkali spray column that connects successively; The described alkali system of joining comprises alkali-prepared tank and joins alkali pump;
The bottom inlet of described deacidification day with fog fetches the H that contains from the workshop
2S and CS
2Exhaust piping, the upper inlet of deacidification day with fog fetches salkali waste pipeline from the salkali waste liquid bath, the top waste gas outlet is connected with the blower fan import; Deacidification day with fog middle and upper part is filled with corrugated regular filler;
Described blower fan is centrifugal high pressure fan;
Described alkali spray column is the structure that top small cylinder is connected with following large cylinder, and small cylinder is connected by a round platform with large cylinder, be connected to little lower wide little round platform on above the small cylinder, alkali spray column tower is equipped with from top to bottom successively: alkaline flushing pipe, demist corrugated regular filler, alkali shower, corrugated regular filler and circulation fluid storage tank.
2. device as claimed in claim 1 is characterized in that:
Described sulphur removal retracting device, comprise at least three alkali spray columns, each alkali spray column all is connected with waste gas and enters pipe and waste gas serises connecting tube and be connected to valve, waste gas enters pipe and the waste gas serises connecting tube is parallel with one another respectively, each alkali spray column also is connected to separately the alkali circulating pump and circulation is taken over, and the circulation fluid storage tank of each alkali spray column is connected to alkali liquor inlet; Described waste gas enters Guan Jun and is connected in fan outlet.
3. device as claimed in claim 2 is characterized in that:
The described alkali system of joining is provided with alkali lye import and soft water import, and the described alkali system of joining links to each other with the alkali spray column by lye pump.
4. device as claimed in claim 3 is characterized in that:
Described sulphur removal retracting device also comprises automatic control system, described deacidification day with fog, high pressure positive blower, alkali spray column, alkali-prepared tank and each pump be connected valve and all be connected with automatic control system, and be subjected to automatic controlling system.
5. a right to use requires the described sulphur removal retracting device of 1-4 to remove H
2S also reclaims available NaHS method, it is characterized in that may further comprise the steps:
(1) waste gas that is come by the workshop is removed part of sulfuric acid acid gas and steam through deacidification fog first, send into the alkali spray column by high pressure positive blower again, described alkali spray column has three of same structure, wherein two form the secondary serial connection, and another alkali spray column carries new alkali lye for subsequent use to the circulation fluid storage tank of tower bottom by joining alkali pump;
(2) waste gas absorption of the beginning first round: the waste gas of being sent here by high pressure positive blower is concatenated into second level alkali spray column again through first order alkali spray column, and waste gas is through the constantly alkali lye contact of circulation of alkali spray column circulating pump of secondary, H
2S is by alkali liquor absorption;
(3) waste gas is transported to subsequent processing through the outlet of second level alkali spray column and is CS
2Absorption reclaim; Described first order alkali spray column constantly absorbs H
2S gas, the NaHS content that finally detects in the circulation fluid reaches 22%, and the alkali that stops first order alkali spray column absorbs;
(4) second waste gas absorptions of taking turns: the second level alkali spray column of the first round is switched to the second one-level alkali spray column of taking turns, first round alkali spray column for subsequent use is switched to the second alkali spray column of taking turns, described switching is exactly that the waste gas of high pressure positive blower outlet is accessed the second first order alkali spray column of taking turns automatically, the second automatic access of first order outlet waste gas second secondary alkali spray column of taking turns of taking turns; The NaHS of former first order alkali spray column is transported to evaporation, crystallization, slicing process through the alkali circulating pump and makes the NaHS tablet and recycle;
(5) circulating slot of airfree first order alkali spray column carries new alkali lye as the second alkali for subsequent use absorption tower of taking turns by joining alkali pump again;
Described sulphur removal recovery method is constantly after the absorption of one-level alkali absorption tower is finished, secondary alkali spray column is switched to the one-level alkali spray column of a new round, alkali spray column for subsequent use switches to the secondary alkali spray column of a new round, the one-level alkali spray absorber that absorption is finished is derived the NaHS absorption liquid, the idle loop groove refills new alkali lye as stand-by still, so moves in circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102972681A CN103316580A (en) | 2013-07-16 | 2013-07-16 | Viscose fiber desulfuration and recovery device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102972681A CN103316580A (en) | 2013-07-16 | 2013-07-16 | Viscose fiber desulfuration and recovery device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103316580A true CN103316580A (en) | 2013-09-25 |
Family
ID=49185794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102972681A Withdrawn CN103316580A (en) | 2013-07-16 | 2013-07-16 | Viscose fiber desulfuration and recovery device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103316580A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028094A (en) * | 2014-06-10 | 2014-09-10 | 江苏申江环境科技有限公司 | Viscose fiber production waste gas recovery system |
| CN104353338A (en) * | 2014-10-28 | 2015-02-18 | 南京大学（苏州）高新技术研究院 | Cross flow-type desulfurization device |
| CN104437006A (en) * | 2014-10-28 | 2015-03-25 | 南京大学 | Membrane absorption device and method for purifying bio-methane |
| CN109485017A (en) * | 2018-11-29 | 2019-03-19 | 营创三征(营口)精细化工有限公司 | It is a kind of to synthesize sodium hypochlorite technique using Cyanuric Chloride tail gas |
| CN112221324A (en) * | 2020-09-28 | 2021-01-15 | 南京金炼科技有限公司 | Process for removing carbonyl sulfide in liquefied gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201115810Y (en) * | 2007-09-30 | 2008-09-17 | 泉州市天龙环境工程有限公司 | Device for recovering viscose fiber production exhaust-gas by alkali cleaning-adsorption condensation method |
| CN202460457U (en) * | 2012-03-09 | 2012-10-03 | 泉州市天龙环境工程有限公司 | Viscose desulfurized hydrogen adsorption device |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN203329611U (en) * | 2013-07-16 | 2013-12-11 | 泉州市天龙环境工程有限公司 | Viscose fiber desulphurization recovery unit |
-
2013
- 2013-07-16 CN CN2013102972681A patent/CN103316580A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201115810Y (en) * | 2007-09-30 | 2008-09-17 | 泉州市天龙环境工程有限公司 | Device for recovering viscose fiber production exhaust-gas by alkali cleaning-adsorption condensation method |
| CN102772991A (en) * | 2011-05-11 | 2012-11-14 | 姚茂洪 | Alkaline washing tank, washing tower and adsorption tank system |
| CN202460457U (en) * | 2012-03-09 | 2012-10-03 | 泉州市天龙环境工程有限公司 | Viscose desulfurized hydrogen adsorption device |
| CN203329611U (en) * | 2013-07-16 | 2013-12-11 | 泉州市天龙环境工程有限公司 | Viscose fiber desulphurization recovery unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028094A (en) * | 2014-06-10 | 2014-09-10 | 江苏申江环境科技有限公司 | Viscose fiber production waste gas recovery system |
| CN104353338A (en) * | 2014-10-28 | 2015-02-18 | 南京大学（苏州）高新技术研究院 | Cross flow-type desulfurization device |
| CN104437006A (en) * | 2014-10-28 | 2015-03-25 | 南京大学 | Membrane absorption device and method for purifying bio-methane |
| CN109485017A (en) * | 2018-11-29 | 2019-03-19 | 营创三征(营口)精细化工有限公司 | It is a kind of to synthesize sodium hypochlorite technique using Cyanuric Chloride tail gas |
| CN112221324A (en) * | 2020-09-28 | 2021-01-15 | 南京金炼科技有限公司 | Process for removing carbonyl sulfide in liquefied gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3456398B1 (en) | Flue gas condensation water extraction system | |
| CN103316580A (en) | Viscose fiber desulfuration and recovery device and method | |
| CN102198361B (en) | Hydrogen chloride tail gas recovery equipment | |
| CN201643967U (en) | Industrial waste gas treatment and recycling device | |
| CN104226096B (en) | Multi-flow-path circulating desulfurization system and multi-flow-path circulating desulfurization method | |
| CN108079762A (en) | Flue gas desulphurization system and the method that flue gas desulfurization is carried out using the flue gas desulphurization system | |
| CN201912877U (en) | System for processing medical waste incineration tail gas containing high concentration hydrogen chloride | |
| CN203990292U (en) | A kind of viscose rayon emission-control equipment | |
| CN101597529A (en) | Methane bio-desulfurization device | |
| CN203329611U (en) | Viscose fiber desulphurization recovery unit | |
| CN103113928A (en) | Optimization process of vacuum potassium carbonate method coke oven gas desulfurization and equipment thereof | |
| CN204502734U (en) | A kind of monoxone device for recovering tail gas | |
| CN202724975U (en) | Viscose plasticized bath waste gas recovery device | |
| CN103638802A (en) | Device and method for processing acid gas of refinery plant | |
| CN202460457U (en) | Viscose desulfurized hydrogen adsorption device | |
| CN202061528U (en) | Hydrogen chloride tail gas recovery device | |
| CN202036906U (en) | NHD (polyethylene glycol dimethyl ether) desulfuration and decarburization condensate recycling system | |
| CN208287767U (en) | A kind of sulfur dioxide reclaiming system | |
| CN206229190U (en) | A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas | |
| CN202590600U (en) | Desulfurization device for preparing ammonium bisulfite solution through ammonia process | |
| CN109381988A (en) | A kind of device preventing ammonia process desulfuration tower Crystallization Plugging | |
| CN201609626U (en) | Device applied in ammonia flue gas desulfurization by using technology of hydrochloric acid production through flue gas dechlorination | |
| CN104971597A (en) | Technical method and device of producing sodium hydrosulfide from acid gas | |
| CN207755980U (en) | A kind of hydrogen sulfide absorption tower | |
| CN203959829U (en) | Separating tank for process for preparation of CS 2 molten sulfur |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20130925 |