CN106215660A - SO in a kind of recovery tail gas2system - Google Patents
SO in a kind of recovery tail gas2system Download PDFInfo
- Publication number
- CN106215660A CN106215660A CN201610721506.0A CN201610721506A CN106215660A CN 106215660 A CN106215660 A CN 106215660A CN 201610721506 A CN201610721506 A CN 201610721506A CN 106215660 A CN106215660 A CN 106215660A
- Authority
- CN
- China
- Prior art keywords
- pump
- reaction tower
- scrubber
- recovery
- short circuit
- 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.)
- Pending
Links
- 238000011084 recovery Methods 0.000 title claims abstract description 64
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 238000010943 off-gassing Methods 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims description 8
- 229920006351 engineering plastic Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims 2
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 37
- 238000000034 method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004254 Ammonium phosphate Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- 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
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses SO in a kind of recovery tail gas2System, it includes first order recirculation system and second level recirculation system, first order recirculation system includes scrubber, the first recovery pump, transporting and the first circulating slot, the top of scrubber is provided with outgassing direction scrubber's air inlet down, the bottom of scrubber is provided with scrubber's discharging opening, and scrubber is internally provided with spray direction the first spray head upward；Second level recirculation system includes reaction tower, the second recovery pump and the second circulating slot, the top of reaction tower arranges reaction tower gas outlet, the bottom of reaction tower is provided with reaction tower liquid outlet, the middle and lower part of reaction tower is provided with reaction tower air inlet, and reaction tower is internally provided with the second spray head that spray is directed downward.The invention has the advantages that and be capable of SO in tail gas2Multiple stage circulation reclaim, resource utilization is high, and organic efficiency is high, decreases environmental pollution.
Description
Technical field
The invention belongs to sulphuric acid manufacturing technology field, particularly relate to SO in a kind of recovery tail gas2System.
Background technology
At present, the sulfuric acid tail gas after two inhale tower absorption still contains a certain amount of SO2, need that it is carried out process and reach
Could discharge after mark.But existing process contains SO2The method of tail gas typically uses Ammonia Process, sodium alkali, calcium method, first order reaction
Tower absorbs SO2, absorption efficiency is low, and system is difficult to control to, and the purposes such as the ammonium sulfite of generation, sodium sulfite, calcium sulfate is wide, and
And after also needing to reprocess, stock stacks, and not only causes the wasting of resources, and pollutes again environment.
Summary of the invention
It is an object of the invention to provide SO in a kind of recovery tail gas2System, it is possible to realize SO in tail gas2Multistage follow
Loopback is received, and resource utilization is high, and organic efficiency is high, decreases environmental pollution.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that SO in a kind of recovery tail gas2System, it
Including first order recirculation system and second level recirculation system, first order recirculation system include scrubber, first
Recovery pump, transporting and the first circulating slot, scrubber is vertically arranged cylinder, and the top of scrubber is provided with outgassing direction court
Under scrubber's air inlet, the bottom of scrubber is provided with scrubber's discharging opening, scrubber be internally located at scrubber's air inlet and
Position between scrubber's discharging opening is provided with spray direction the first spray head upward, the inlet and outlet of the first recovery pump
Being connected to the first feed tube and the first drain pipe, the first spray head is connected by the first shower and the first drain pipe, the
One feed tube and the connection of the first circulating slot；The top of transporting is provided with transporting charging aperture and transporting gas outlet, transporting
Bottom be provided with transporting liquid outlet, transporting charging aperture connects with scrubber's discharging opening, transporting liquid outlet pass through first
Connecting tube connects with the first circulating slot；
Second level recirculation system includes reaction tower, the second recovery pump and the second circulating slot, and the top of reaction tower arranges reaction
Tower gas outlet, the bottom of reaction tower is provided with reaction tower liquid outlet, and the middle and lower part of reaction tower is provided with reaction tower air inlet, reaction
The position that tower is internally located between reaction tower air inlet and reaction tower gas outlet is provided with the second spray that spray is directed downward
Head；The inlet and outlet of the second recovery pump is connected to the second feed tube and the second drain pipe, and the second spray head passes through second
Shower and the connection of the second drain pipe, the second drain pipe also by the connection of return duct and the first circulating slot, the second feed tube and the
Two circulating slot connections；Reaction tower liquid outlet is connected with the second circulating slot by the second connecting tube.
It also includes storage tank, and storage tank is connected with described first drain pipe by catheter, and storage tank bottom connects discharging tube,
It is provided with the 3rd recovery pump on discharging tube, the discharging tube of the 3rd recovery pump both sides is respectively arranged with valve.
Described 3rd recovery pump is engineering plastic pump.
It also includes chimney, and chimney is connected with described reaction tower gas outlet by exhaustor.
The side of described first recovery pump is parallel with the first stand-by pump, and the first short circuit inlet pipe is passed through in the import of the first stand-by pump
Connecting with the first feed tube, the first standby delivery side of pump goes out pipe by the first short circuit and connects with the first drain pipe, and the first short circuit enters
Pipe and the first short circuit go out to be provided with valve on pipe；
The side of described second recovery pump is parallel with the second stand-by pump, and the import of the second stand-by pump is by the second short circuit inlet pipe and the
Two feed tubes connection, the second standby delivery side of pump by the second short circuit go out pipe connect with the second drain pipe, the second short circuit inlet pipe with
Second short circuit goes out to be provided with valve on pipe.
Described first recovery pump, the second recovery pump, the first stand-by pump and the second stand-by pump are engineering plastic pump.
It is all provided with on described first shower, the first feed tube, the first drain pipe, the second feed tube and the second drain pipe
It is equipped with valve.
Beneficial effects of the present invention:
The SO contained2Sulfuric acid tail gas enter and the H contained of the first spray head ejection from the scrubber air inlet of scrubber2O2
Liquid and the reverse haptoreaction of dilute sulfuric acid liquid generate the dilute sulfuric acid of about 40% and flow in the first circulating slot, H2O2Strength of fluid continues
Continuous reduction, dilute sulfuric acid concentration raises, and mixing liquid needs quantitatively to be drained in storage tank to be deposited.Unabsorbed contain SO2 completely
Sulfuric acid tail gas enter back in reaction tower and the H of the second spray head ejection2O2Liquid inversely contacts, and major part SO2Participate in reaction
Flowing in the second circulating slot after generating dilute sulfuric acid, the part on a small quantity of the liquid in the second circulating slot seals in the first circulating slot supplements it
H2O2The amount of liquid.Reclaim SO2After tail gas through chimney qualified discharge.About 40% dilute sulfuric acid being stored in storage tank passes through the 3rd
Recovery pump is for ammonium phosphate system or other production.By above-mentioned flow process, the SO in tail gas2,Reaction obtains sulphuric acid, has reclaimed Sulphur ressource,
Decrease environmental pollution, and the system of the present invention is easy to control, the SO in tail gas2Reclaim through multiple stage circulation, the utilization of resources
Rate is high, and organic efficiency is high.
The side of described first recovery pump is parallel with the first stand-by pump, and the first short circuit inlet pipe is passed through in the import of the first stand-by pump
Connecting with the first feed tube, the first standby delivery side of pump goes out pipe by the first short circuit and connects with the first drain pipe, and the first short circuit enters
Pipe and the first short circuit go out to be provided with valve on pipe.First stand-by pump be provided for when the first recovery pump fault use, just
The valve that often during work, the first stand-by pump and the first short circuit inlet pipe and the first short circuit go out on pipe is in closed mode, when first time
When receiving failure of pump, close the valve on the first feed tube and the first drain pipe, control the first stand-by pump and the first short circuit inlet pipe and
The valve that first short circuit goes out on pipe is in open mode, i.e. completes the first stand-by pump and the switching of the first recovery pump.
The side of described second recovery pump is parallel with the second stand-by pump, and the second short circuit inlet pipe is passed through in the import of the second stand-by pump
Connecting with the second feed tube, the second standby delivery side of pump goes out pipe by the second short circuit and connects with the second drain pipe, and the second short circuit enters
Pipe and the second short circuit go out to be provided with valve on pipe.Being provided for when the second recovery pump fault of second stand-by pump uses, and the
Two stand-by pumps and the switching of the second recovery pump, with reference to above-mentioned first stand-by pump and the handoff procedure of the first recovery pump.
Accompanying drawing explanation
Fig. 1 is the systematic schematic diagram of the present invention.
Detailed description of the invention
Elaborating the detailed description of the invention of the present invention below in conjunction with accompanying drawing, in figure, the direction of arrow represents liquid stream
To.
As it is shown in figure 1, a kind of of the present invention reclaims SO in tail gas2System, it include first order recirculation system and
Second level recirculation system, first order recirculation system includes that scrubber's the 2, first recovery pump 3, transporting 11 and first follow
Annular groove 4, scrubber 2 is vertically arranged cylinder, and the top of scrubber 2 is provided with outgassing direction scrubber's air inlet down,
The bottom of scrubber 2 is provided with scrubber's discharging opening, and scrubber 2 is internally located between scrubber's air inlet and scrubber's discharging opening
Position be provided with spray direction the first spray head 14 upward, the inlet and outlet of the first recovery pump 3 is connected to the
One feed tube 16 and the first drain pipe 15, the first spray head 14 is connected with the first drain pipe 15 by the first shower 19, and first
Feed tube 16 connects with the first circulating slot 4；The top of transporting 11 is provided with transporting charging aperture and transporting gas outlet, transhipment
The bottom of cylinder is provided with transporting liquid outlet, and transporting charging aperture connects with scrubber's discharging opening, and transporting liquid outlet passes through the
One connecting tube 21 connects with the first circulating slot 4.
Second level recirculation system includes reaction tower the 6, second recovery pump 7 and the second circulating slot 8, the top of reaction tower 6
Arranging reaction tower gas outlet, the bottom of reaction tower 6 is provided with reaction tower liquid outlet, and the middle and lower part of reaction tower 6 is provided with reaction tower
Air inlet, the position that reaction tower 6 is internally located between reaction tower air inlet and reaction tower gas outlet is provided with spray direction court
Under the second spray head 31；The inlet and outlet of the second recovery pump 7 is connected to the second feed tube 27 and the second drain pipe 26,
Second spray head 31 is connected with the second drain pipe 26 by the second shower 23, and the second drain pipe 26 is also by return duct 22 and the
One circulating slot 4 connects, and the second feed tube 27 connects with the second circulating slot 8；Reaction tower liquid outlet is by the second connecting tube 28 and the
Two circulating slots 8 connect.
Described first shower the 19, first feed tube the 16, first drain pipe the 15, second feed tube 27 and second goes out liquid
It is provided with valve on pipe 26.
Present invention additionally comprises storage tank 5, storage tank 5 is connected with described first drain pipe 15 by catheter 20, and storage tank 5 bottom is even
It is connected to discharging tube 29, discharging tube 29 is provided with the 3rd recovery pump 30, the discharging tube 29 of the 3rd recovery pump 30 both sides sets respectively
It is equipped with valve.
Present invention additionally comprises chimney 10, chimney 10 is connected with described reaction tower gas outlet by exhaustor 13.
The side of described first recovery pump 3 is parallel with the first stand-by pump 31, and the import of the first stand-by pump 31 is short by first
Tapping into pipe 18 to connect with the first feed tube 16, the outlet of the first stand-by pump 31 goes out pipe 17 and the first drain pipe 15 by the first short circuit
Connection, the first short circuit inlet pipe 18 and the first short circuit go out and are provided with valve on pipe 17.Being provided for of first stand-by pump 31
Using during one recovery pump 3 fault, during normal work, the first stand-by pump 31 and the first short circuit inlet pipe 18 and the first short circuit go out on pipe 17
Valve be in closed mode, when the first recovery pump 3 fault, close the valve on the first feed tube 16 and the first drain pipe 15
Door, controls the first stand-by pump 31 and the first short circuit inlet pipe 18 and valve that the first short circuit goes out on pipe 17 is in open mode, i.e.
Complete the first stand-by pump 31 and switching of the first recovery pump 3.
The side of described second recovery pump 7 is parallel with the second stand-by pump 71, and the import of the second stand-by pump 71 is short by second
Tapping into pipe 25 to connect with the second feed tube 27, the outlet of the second stand-by pump 71 goes out pipe 24 and the second drain pipe 26 by the second short circuit
Connection, the second short circuit inlet pipe 25 and the second short circuit go out and are provided with valve on pipe 24.Being provided for of second stand-by pump 71
Use during two recovery pump 7 faults, the second stand-by pump 71 and switching of the second recovery pump 7, with reference to above-mentioned first stand-by pump 31 and the
The handoff procedure of one recovery pump 7.
Described first recovery pump the 3, second recovery pump the 7, the 3rd recovery pump the 30, first stand-by pump 21 and the second stand-by pump 71 are equal
For engineering plastic pump, engineering plastic pump has acid resistance, meets practical application request.
When the present invention works, inhale, through two, the SO contained that tower outlet comes2Sulfuric acid tail gas from scrubber's air inlet of scrubber 2
Mouth entrance and the first recovery pump 3 are pumped into the H contained of the first spray head 142O2Liquid and the reverse haptoreaction of dilute sulfuric acid liquid
The dilute sulfuric acid generating about 40% flows in the first circulating slot 4 through transporting 11 and the first connecting tube 21, H2O2Strength of fluid continues
Reducing, dilute sulfuric acid concentration raises, and mixing liquid needs quantitatively to be drained in storage tank 5 to be deposited.Unabsorbed contain SO2's completely
Sulfuric acid tail gas enters back into the H being pumped into the second spray head 31 in reaction tower 6 with the second recovery pump 72O2Liquid inversely contacts, and greatly
Part SO2Participating in reaction and generate dilute sulfuric acid, dilute sulfuric acid footpath second connecting tube 28 of generation flows in the second circulating slot 8, and second follows
Liquid in annular groove 8 part on a small quantity seals in supplements its H in the first circulating slot 42O2The amount of liquid.Reclaim SO2After tail gas through chimney
10 qualified discharges.About 40% dilute sulfuric acid being stored in storage tank 5 supplies ammonium phosphate system or other production by the 3rd recovery pump 30.
By above-mentioned flow process, peroxide passivation is utilized to process the SO in sulfuric acid tail gas2,, and react obtain sulphuric acid, reclaimed Sulphur ressource, reduce
Environmental pollution, and the system of the present invention is easy to control, SO in tail gas2Reclaiming through multiple stage circulation, resource utilization is high,
Organic efficiency is high.
Above example is only in order to illustrative not limiting technical scheme, although with reference to above-described embodiment to this
Bright be described in detail, it will be understood by those within the art that: still the present invention can be modified or etc.
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should contain the power in the present invention
In the middle of profit claimed range.
Claims (7)
1. one kind is reclaimed SO in tail gas2System, it is characterised in that: it include first order recirculation system and the second level circulation
Recovery system, first order recirculation system includes scrubber, the first recovery pump, transporting and the first circulating slot, and scrubber is
Vertically arranged cylinder, the top of scrubber is provided with outgassing direction scrubber's air inlet down, and the bottom of scrubber is arranged
Having scrubber's discharging opening, the position that scrubber is internally located between scrubber's air inlet and scrubber's discharging opening is provided with spray
Direction the first spray head upward, the inlet and outlet of the first recovery pump is connected to the first feed tube and the first drain pipe,
First spray head is connected by the first shower and the first drain pipe, the first feed tube and the connection of the first circulating slot；Transporting
Top is provided with transporting charging aperture and transporting gas outlet, and the bottom of transporting is provided with transporting liquid outlet, and transporting enters
Material mouth connects with scrubber's discharging opening, and transporting liquid outlet is connected with the first circulating slot by the first connecting tube；
Second level recirculation system includes reaction tower, the second recovery pump and the second circulating slot, and the top of reaction tower arranges reaction
Tower gas outlet, the bottom of reaction tower is provided with reaction tower liquid outlet, and the middle and lower part of reaction tower is provided with reaction tower air inlet, reaction
The position that tower is internally located between reaction tower air inlet and reaction tower gas outlet is provided with the second spray that spray is directed downward
Head；The inlet and outlet of the second recovery pump is connected to the second feed tube and the second drain pipe, and the second spray head passes through second
Shower and the connection of the second drain pipe, the second drain pipe also by the connection of return duct and the first circulating slot, the second feed tube and the
Two circulating slot connections；Reaction tower liquid outlet is connected with the second circulating slot by the second connecting tube.
SO in recovery tail gas the most according to claim 12System, it is characterised in that: it also includes storage tank, and storage tank passes through
Catheter connects with described first drain pipe, and storage tank bottom connects discharging tube, and discharging tube is provided with the 3rd recovery pump, and the 3rd
It is respectively arranged with valve on the discharging tube of recovery pump both sides.
SO in recovery tail gas the most according to claim 22System, it is characterised in that: described 3rd recovery pump is engineering plastic
Material pump.
SO in recovery tail gas the most according to claim 1 and 22System, it is characterised in that: it also includes chimney, chimney lead to
Cross exhaustor to connect with described reaction tower gas outlet.
SO in recovery tail gas the most according to claim 42System, it is characterised in that: the side of described first recovery pump is also
Being associated with the first stand-by pump, the import of the first stand-by pump is connected by the first short circuit inlet pipe and the first feed tube, the first stand-by pump
Exporting to go out to manage by the first short circuit and connect with the first drain pipe, the first short circuit inlet pipe and the first short circuit go out to be provided with valve on pipe
Door；
The side of described second recovery pump is parallel with the second stand-by pump, and the import of the second stand-by pump is by the second short circuit inlet pipe and the
Two feed tubes connection, the second standby delivery side of pump by the second short circuit go out pipe connect with the second drain pipe, the second short circuit inlet pipe with
Second short circuit goes out to be provided with valve on pipe.
SO in recovery tail gas the most according to claim 52System, it is characterised in that: described first recovery pump, second time
Receive pump, the first stand-by pump and the second stand-by pump and be engineering plastic pump.
SO in recovery tail gas the most according to claim 12System, it is characterised in that: described first shower,
It is provided with valve on one feed tube, the first drain pipe, the second feed tube and the second drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721506.0A CN106215660A (en) | 2016-08-25 | 2016-08-25 | SO in a kind of recovery tail gas2system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610721506.0A CN106215660A (en) | 2016-08-25 | 2016-08-25 | SO in a kind of recovery tail gas2system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106215660A true CN106215660A (en) | 2016-12-14 |
Family
ID=57555092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610721506.0A Pending CN106215660A (en) | 2016-08-25 | 2016-08-25 | SO in a kind of recovery tail gas2system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106215660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841249A (en) * | 2019-04-26 | 2020-10-30 | 宁德时代新能源科技股份有限公司 | Exhaust gas purification system |
| CN112107983A (en) * | 2020-08-17 | 2020-12-22 | 南京汇仁化工设备有限公司 | Hydrogen peroxide desulfurization process |
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