CN108179044A - Regenerative sulfur binding system with pressure based on wet type oxidation-reduction process - Google Patents
Regenerative sulfur binding system with pressure based on wet type oxidation-reduction process Download PDFInfo
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- CN108179044A CN108179044A CN201711174829.3A CN201711174829A CN108179044A CN 108179044 A CN108179044 A CN 108179044A CN 201711174829 A CN201711174829 A CN 201711174829A CN 108179044 A CN108179044 A CN 108179044A
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- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 127
- 239000011593 sulfur Substances 0.000 title claims abstract description 127
- 230000033116 oxidation-reduction process Effects 0.000 title claims abstract description 29
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 24
- 239000006260 foam Substances 0.000 claims abstract description 100
- 238000010521 absorption reaction Methods 0.000 claims abstract description 68
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 239000005864 Sulphur Substances 0.000 claims abstract description 48
- 239000000126 substance Substances 0.000 claims abstract description 18
- 230000008929 regeneration Effects 0.000 claims abstract description 16
- 238000011069 regeneration method Methods 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 12
- 238000007701 flash-distillation Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 6
- 230000008439 repair process Effects 0.000 description 5
- 239000008139 complexing agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009279 wet oxidation reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- XAQHXGSHRMHVMU-UHFFFAOYSA-N [S].[S] Chemical compound [S].[S] XAQHXGSHRMHVMU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
-
- 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
- B01D53/52—Hydrogen sulfide
-
- 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
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The present invention provides a kind of regenerative sulfur binding system with pressure based on wet type oxidation-reduction process, including：Gas-liquid separator, absorption tower, flash tank, regenerator, pressure-regulating valve, lean solution tank, circulating pump, air blower, sulfur foam pump, sulfur foam tank, centrifuge.External sulfur-containing gas isolates sulfurous gas under the action of gas-liquid separator, and the sulphur that the doctor solution in absorption tower is absorbed in sulfurous gas becomes the rich solution containing sulphur simple substance.The rich solution containing sulphur simple substance after flash distillation decompression is fed to regenerator by flash tank, air is at the same time blasted into regenerator by air blower, so as under the collective effect of flash tank and air blower, so that the pressure in regenerator is higher than external atmosphere pressure, and then regeneration with pressure is realized in regenerator.Regenerator third outlet has pressure-regulating valve, and pressure-regulating valve adjusts the pressure in regenerator to ensure that the pressure in regenerator is constant, so as to increase the reaction rate of oxygen and rich solution, improves regeneration efficiency in real time.
Description
Technical field
The present invention relates to wet oxidation reduction and desulfurization law technology fields more particularly to a kind of based on wet type oxidation-reduction process
Regenerative sulfur binding system with pressure.
Background technology
Wet oxidation reduction and desulfurization method be it is a kind of using the solution containing the carrier of oxygen by the H in natural gas2S is oxidized to element
Sulphur and the regenerated selexol process method of carrier of oxygen oxidation by air.In conventional wet oxidation reduction and desulfurization method technique
Absorption process and regenerative process carry out in two reactors in absorption tower and regenerator respectively, the high pressure (pressure i.e. in absorption tower
Higher than external atmosphere pressure) absorb, normal pressure (pressure be equal to external atmosphere pressure) i.e. in regenerator regenerates, but in regenerator into
The regenerated regeneration efficiency of row normal pressure is low, and regeneration equipment size is excessive.
Invention content
In view of the problem of background technology, the purpose of the present invention is to provide a kind of based on wet type oxidation-reduction process
Regenerative sulfur binding system with pressure, by promoting the pressure in regenerator and regenerator being made to be higher than external atmosphere pressure in internal pressure
Under conditions of realize regenerative process, improve regeneration efficiency, and while system run all right is ensured, reduce equipment ruler
It is very little.
To achieve these goals, the present invention provides a kind of regenerative sulfur binding systems with pressure based on wet type oxidation-reduction process
System, including：Gas-liquid separator, absorption tower, flash tank, regenerator, pressure-regulating valve, lean solution tank, circulating pump, air blower, sulphur
Sulphur foam pump, sulfur foam tank, centrifuge.
Gas-liquid separator has：Gas-liquid separator entrance receives external sulfur-containing gas；And gas-liquid separator goes out
Mouthful.
Absorption tower is built-in with doctor solution and has：Absorption tower first entrance is communicated in gas-liquid separator outlet；Absorption tower
Two entrances；Absorption tower first outlet；And absorption tower second outlet.
Flash tank has：Flash tank entrance is communicated in absorption tower second outlet；Flash tank first outlet；And flash tank
Second outlet.
Regenerator has：Regenerator first entrance is communicated in flash tank second outlet；Regenerator second entrance；Regenerator
Third entrance；Regenerator first outlet；Regenerator second outlet；And regenerator third exports, and is set to the top of regenerator.
Pressure-regulating valve is communicated in the outlet of regenerator third.
Lean solution tank has：Lean solution tank first entrance, is communicated in regenerator first outlet；Lean solution tank second entrance；It is and poor
Flow container exports.
Circulating pump has：Pump entry is communicated in the outlet of lean solution tank；And circulating-pump outlet, it is communicated in absorption tower
Two entrances.
Air blower is communicated in regenerator second entrance.
Sulfur foam pump has：Sulfur foam pump intake is communicated in regenerator second outlet；And sulfur foam pumps out
Mouthful, it is communicated in regenerator third entrance.
Sulfur foam tank has：Sulfur foam tank entrance is communicated in sulfur foam pump discharge；And sulfur foam tank goes out
Mouthful.
Centrifuge has：Centrifuge entrance is communicated in sulfur foam tank outlet；Centrifuge first outlet, is communicated in outside
Storage sulphur device；And centrifuge second outlet, it is communicated in lean solution tank second entrance.
Wherein, external sulfur-containing gas enters via gas-liquid separator entrance in gas-liquid separator and in gas-liquid separator
Middle carry out gas-liquid separation, the sulfurous gas that gas-liquid separator separates go out is exported via gas-liquid separator, absorption tower first entrance into
Enter in absorption tower.
Sulphur in sulfurous gas becomes purified gas and via absorption tower first outlet after being absorbed by the doctor solution in absorption tower
It is expelled directly out, and the doctor solution in absorption tower becomes the rich solution containing sulphur simple substance and via absorption after absorbing the sulphur in sulfurous gas
Tower second outlet, flash tank entrance enter in flash tank.
Rich solution containing sulphur simple substance carries out flash distillation decompression in flash tank, and the flashed vapour that flash distillation decompression generates is via flash tank
First outlet is expelled directly out, and flashes the rich solution containing sulphur simple substance after decompression via flash tank second outlet, regenerator first
Entrance enters in regenerator.
Air blower blasts air into regenerator via regenerator second entrance, and air makes the rich solution in regenerator aoxidize simultaneously
Regeneration is as lean solution and the sulphur simple substance in regenerator is made to form sulfur foam in regenerator.
In regenerator, air blower and flash tank cause pressure in regenerator higher than external atmosphere pressure together, and pressure
Regulating valve is by the pressure in regenerator third outlet regulating regenerator and ensures that the pressure in regenerator is constant.
Lean solution enters via regenerator first outlet, lean solution tank first entrance in lean solution tank.
Sulfur foam enters via regenerator second outlet, sulfur foam pump intake in sulfur foam pump, then in sulphur
Under the action of foam pump, sub-fraction sulfur foam reenters regeneration via sulfur foam pump discharge, regenerator third entrance
Desulfurization regeneration is carried out in tower, and most of sulfur foam enters sulphur bubble via sulfur foam pump discharge, sulfur foam tank entrance
In foam slot.
Sulfur foam in sulfur foam tank is exported via sulfur foam tank, centrifuge entrance enters in centrifuge, then
Under the action of centrifuge, sulfur foam is dehydrated and to form sulphur, sulphur is discharged to external storage sulphur via centrifuge first outlet and fills
In putting, and the moisture that sulfur foam is removed in centrifuge via centrifuge second outlet, lean solution tank second entrance enter it is poor
In flow container.
After regenerated lean solution is mixed with the moisture removed in centrifuge in lean solution tank in regenerator pass through by lean solution tank outlet,
Pump entry enters in circulating pump, is then promoted under the action of circulating pump via circulating-pump outlet, absorption tower second entrance
It is recycled into absorption tower and on absorption tower.
Beneficial effects of the present invention are as follows：
In the regenerative sulfur binding system with pressure according to the present invention based on wet type oxidation-reduction process, external sulfur-containing gas
Sulfurous gas is isolated under the action of gas-liquid separator, after sulfurous gas enters in absorption tower, the doctor solution in absorption tower exists
The lower sulphur absorbed in sulfurous gas of high pressure effect simultaneously becomes the rich solution containing sulphur simple substance to realize high pressure absorption process.And it is regenerating
In the process, the present invention feeds the rich solution containing sulphur simple substance after flash distillation decompression to regenerator by flash tank, at the same time passes through
Air blower blasts air into regenerator, so as under the collective effect of flash tank and air blower so that the pressure in regenerator
Higher than external atmosphere pressure, and then regeneration with pressure is realized in regenerator.Also, regenerator third outlet has pressure adjusting
Valve, pressure-regulating valve can adjust the pressure in regenerator to ensure that the pressure in regenerator is constant in real time, so as to ensure to regenerate
The progress of Cheng Wending.And since the pressure in regenerator is higher than external atmosphere pressure, the partial pressure of oxygen increase in air is correspondingly, empty
Oxygen in gas, which is dissolved in the amount of the rich solution in regenerator and solution rate, to be increased, fast so as to increase oxygen and reacting for rich solution
Rate improves regeneration efficiency.In addition, the regenerative sulfur binding system with pressure based on wet type oxidation-reduction process of the present invention is ensureing system
While stable, the equipment size in system is also reduced.
Description of the drawings
Fig. 1 is the technological process signal of the regenerative sulfur binding system with pressure according to the present invention based on wet type oxidation-reduction process
Figure.
Wherein, the reference numerals are as follows：
11 gas-liquid separator, 16 circulating pump
11A gas-liquid separator entrance 16A pump entries
11B gas-liquid separators export 16B circulating-pump outlets
12 absorption tower, 17 air blower
First entrance 18 sulfur foam in 12A1 absorption towers pumps
12A2 absorption towers second entrance 18A sulfur foam pump intakes
12B1 absorption towers first outlet 18B sulfur foam pump discharges
19 sulfur foam tank of 12B2 absorption towers second outlet
13 flash tank 19A sulfur foam tank entrances
13A flash tank entrance 19B sulfur foam tanks export
20 centrifuge of 13B1 flash tanks first outlet
13B2 flash tank second outlet 20A centrifuge entrances
14 regenerator 20B1 centrifuge first outlets
14A1 regenerator first entrance 20B2 centrifuge second outlets
21 liquid level gauge of 14A2 regenerators second entrance
22 flowmeter of 14A3 regenerator thirds entrance
14B1 regenerator first outlet V1 pressure-regulating valves
14B2 regenerator second outlet V2 flow control valves
14B3 regenerators third outlet T1 storage sulphur devices
15 lean solution tank T2 feeders
15A1 lean solution tank first entrance the first caissons of T3
15A2 lean solution tank second entrance the second caissons of T4
15B lean solutions tank exports
Specific embodiment
It is described in detail the regenerative sulfur binding system with pressure according to the present invention based on wet type oxidation-reduction process with reference to the accompanying drawings
System.
With reference to Fig. 1, the regenerative sulfur binding system with pressure according to the present invention based on wet type oxidation-reduction process includes：Gas-liquid separation
Device 11, absorption tower 12, flash tank 13, regenerator 14, pressure-regulating valve V1, lean solution tank 15, circulating pump 16, air blower 17, sulphur
Foam pump 18, sulfur foam tank 19, centrifuge 20.
Gas-liquid separator 11 has：Gas-liquid separator entrance 11A receives external sulfur-containing gas；And gas-liquid separation
Device exports 11B.
Absorption tower 12 is built-in with doctor solution and (mainly contains complexing agent, Fe3+) and have：Absorption tower first entrance 12A1, even
Pass through gas-liquid separator outlet 11B；Absorption tower second entrance 12A2；Absorption tower first outlet 12B1；And absorption tower second goes out
Mouth 12B2.
Flash tank 13 has：Flash tank entrance 13A is communicated in absorption tower second outlet 12B2；Flash tank first outlet
13B1；And flash tank second outlet 13B2.
Regenerator 14 has：Regenerator first entrance 14A1 is communicated in flash tank second outlet 13B2；Regenerator second enters
Mouth 14A2；Regenerator third entrance 14A3；Regenerator first outlet 14B1；Regenerator second outlet 14B2；And regenerator
Three outlet 14B3 are set to the top of regenerator 14.
Pressure-regulating valve V1 is communicated in regenerator third outlet 14B3.
Lean solution tank 15 has：Lean solution tank first entrance 15A1, is communicated in regenerator first outlet 14B1；Lean solution tank second enters
Mouth 15A2；And lean solution tank outlet 15B.
Circulating pump 16 has：Pump entry 16A is communicated in lean solution tank outlet 15B；And circulating-pump outlet 16B, connection
In absorption tower second entrance 12A2.
Air blower 17 is communicated in regenerator second entrance 14A2.
Sulfur foam pump 18 has：Sulfur foam pump intake 18A is communicated in regenerator second outlet 14B2；And sulphur
Foam pump discharge 18B is communicated in regenerator third entrance 14A3.
Sulfur foam tank 19 has：Sulfur foam tank entrance 19A is communicated in sulfur foam pump discharge 18B；And sulphur bubble
Foam slot exports 19B.
Centrifuge 20 has：Centrifuge entrance 20A is communicated in sulfur foam tank outlet 19B；Centrifuge first outlet
20B1 is communicated in external storage sulphur device T1；And centrifuge second outlet 20B2, it is communicated in lean solution tank second entrance 15A2.
Wherein, external sulfur-containing gas enters via gas-liquid separator entrance 11A in gas-liquid separator 11 and in gas-liquid
Gas-liquid separation is carried out in separator 11, the sulfurous gas that gas-liquid separator 11 is isolated is via gas-liquid separator outlet 11B, absorption
Tower first entrance 12A1 enters in absorption tower 12.
Sulphur in sulfurous gas becomes purified gas and goes out via absorption tower first after being absorbed by the doctor solution in absorption tower 12
Mouth 12B1 is expelled directly out, and the doctor solution in absorption tower 12 becomes the rich solution containing sulphur simple substance after absorbing the sulphur in sulfurous gas
(i.e. Fe3++2HS——Fe2++2S+2H+, rich solution mainly contains complexing agent, drusen, Fe2+) and via absorption tower second outlet
12B2, flash tank entrance 13A enter in flash tank 13.
Rich solution containing sulphur simple substance carries out flash distillation decompression in flash tank 13, and the flashed vapour that flash distillation decompression generates is via flash distillation
Tank first outlet 13B1 is expelled directly out, and flash decompression after the rich solution containing sulphur simple substance via flash tank second outlet 13B2,
Regenerator first entrance 14A1 enters in regenerator 14.
Air blower 17 blasts air into regenerator 14 via regenerator second entrance 14A2, and air makes in regenerator 14
Rich solution is aoxidized and regenerated as lean solution (i.e. 2Fe2++1/2O2+H+→2Fe3++OH-, lean solution mainly contain complexing agent, drusen,
Fe3+, water) and the sulphur simple substance in regenerator 14 is made to form sulfur foam in regenerator 14.
In regenerator 14, air blower 17 and flash tank 13 are together so that the pressure in regenerator 14 is higher than ambient atmosphere
Pressure, and pressure-regulating valve V1 exports the pressure in 14B3 adjusting regenerators 14 by regenerator third and ensures in regenerator 14
Pressure is constant.
Lean solution enters via regenerator first outlet 14B1, lean solution tank first entrance 15A1 in lean solution tank 15.
Sulfur foam enters via regenerator second outlet 14B2, sulfur foam pump intake 18A in sulfur foam pump 18, so
Afterwards under the action of sulfur foam pump 18, sub-fraction sulfur foam is via sulfur foam pump discharge 18B, regenerator third entrance
14A3 is reentered and desulfurization regeneration is carried out in regenerator 14, and most of sulfur foam is via sulfur foam pump discharge 18B, sulphur
Foam tank entrance 19A enters in sulfur foam tank 19.
Sulfur foam in sulfur foam tank 19 enters centrifuge via sulfur foam tank outlet 19B, centrifuge entrance 20A
In 20, then under the action of centrifuge 20, sulfur foam is dehydrated and to form sulphur, sulphur is arranged via centrifuge first outlet 20B1
Into external storage sulphur device T1, and the moisture that sulfur foam is removed in centrifuge 20 is via centrifuge second outlet
20B2, lean solution tank second entrance 15A2 enter in lean solution tank 15.
It is passed through after regenerated lean solution is mixed with the moisture removed in centrifuge 20 in lean solution tank 15 in regenerator 14 by lean solution
Tank outlet 15B, pump entry 16A enter in circulating pump 16, then via circulating-pump outlet under the action of circulating pump 16
16B, absorption tower second entrance 12A2 are promoted in absorption tower 12 and are recycled on absorption tower 12.
In the regenerative sulfur binding system with pressure according to the present invention based on wet type oxidation-reduction process, external sulfur-containing gas
Sulfurous gas is isolated under the action of gas-liquid separator 11, it is de- in absorption tower 12 after sulfurous gas enters in absorption tower 12
Sulphur liquid absorbs the sulphur in sulfurous gas under high pressure effect and becomes the rich solution containing sulphur simple substance to realize high pressure absorption process.And
In regenerative process, the present invention is fed to regenerator 14 by flash tank 13 (pressure during work is usually 0.35MPa) and flashed
At the same time the rich solution containing sulphur simple substance after decompression blasts air by air blower 17 into regenerator 14, so as to flash
Under the collective effect of tank 13 and air blower 17 so that the pressure in regenerator 14 is higher than external atmosphere pressure, and then in regenerator 14
It is middle to realize regeneration with pressure.Also, regenerator third outlet 14B3 is communicated with pressure-regulating valve V1, and pressure-regulating valve V1 can be adjusted in real time
The pressure in regenerator 14 is saved to ensure that the pressure in regenerator 14 is constant, so as to ensure the progress of regenerative process stabilization.And by
Pressure in regenerator 14 is higher than external atmosphere pressure, and the partial pressure of oxygen increase in air, correspondingly, the oxygen in air is dissolved in
The amount and solution rate of rich solution in regenerator 14 increase, and so as to increase the reaction rate of oxygen and rich solution, improve regeneration
Efficiency.In addition, the regenerative sulfur binding system with pressure based on wet type oxidation-reduction process of the present invention is ensureing the same of system run all right
When, also reduce the equipment size in system.
In the regenerative sulfur binding system with pressure based on wet type oxidation-reduction process of the present invention, regenerator 14 is in regenerative process
Pressure in closed state, regenerator 14 can be 0.02MPa (G)~0.07MPa (G).Wherein, regenerator of the invention
14 in design, manufacturing process, still can be produced (regenerator according to design, the manufacture requirement of conventional regenerator 14
14 can realize the pressure in above range by the common effect of flash tank 13 and air blower 17), without by regenerator 14
It is manufactured as pressure vessel, so as to which cost be greatly saved.
With reference to Fig. 1, the regenerative sulfur binding system with pressure based on wet type oxidation-reduction process may also include：Liquid level gauge 21, for showing
Show the liquid level in regenerator 14；And flow control valve V2, it is set to regenerator first outlet 14B1 and lean solution tank first entrance
Between 15A1, and liquid level gauge 21 is communicatively coupled to control liquid level in regenerator 14 and flow into lean solution tank 15 from regenerator 14
Lean solution flow.With reference to Fig. 1, the desulphurization system of wet type oxidation-reduction process may also include：Flowmeter 22, is set to sulfur foam
Between pump discharge 18B and sulfur foam tank entrance 19A, flowed for controlling the liquid level in regenerator 14 and pumping 18 from sulfur foam
Enter the flow of the sulfur foam of sulfur foam tank 19.
Regenerative sulfur binding system with pressure based on wet type oxidation-reduction process may also include：Controller (not shown), communication connection
Liquid level gauge 21, flow control valve V2, sulfur foam pump 18 and flowmeter 22.The regenerator that controller is shown based on liquid level gauge 21
The height of liquid level in 14, adjust the openings of sizes of flow control valve V2 in real time control liquid level in regenerator 14 and
The flow of the lean solution of lean solution tank 15 is flowed into from regenerator 14；The uninterrupted that controller is shown based on flowmeter 22 simultaneously, it is real
When adjust the frequency of sulfur foam pump 18 to control liquid level in regenerator 14 and flow into sulfur foams from sulfur foam pump 18
The flow of the sulfur foam of slot 19, so as to which the present invention is in liquid level gauge 21, flow control valve V2, sulfur foam pump 18 and flowmeter 22
And under the mating reaction of controller, ensure the operation that entire desulphurization system is normal, stablizes, improve regeneration efficiency.
With reference to Fig. 1, gas-liquid separator entrance 11A is communicated in external feeder T2 to receive external sulfur-containing gas
(contain H2S gases).Absorption tower first outlet 12B1 is communicated in the first external caisson T3 with will be net in absorption tower 12
Change gas to be discharged into the first caisson T3.Flash tank first outlet 13B1 is communicated in the second external caisson T4 will flash
Flashed vapour in tank 13 is discharged into the second caisson T4.
Claims (7)
1. a kind of regenerative sulfur binding system with pressure based on wet type oxidation-reduction process, which is characterized in that including：Gas-liquid separator
(11), have：
Gas-liquid separator entrance (11A) receives external sulfur-containing gas；And
Gas-liquid separator exports (11B)；
Absorption tower (12), is built-in with doctor solution, and have：
Absorption tower first entrance (12A1) is communicated in gas-liquid separator outlet (11B)；
Absorption tower second entrance (12A2)；
Absorption tower first outlet (12B1)；And
Absorption tower second outlet (12B2)；
Flash tank (13), has：
Flash tank entrance (13A) is communicated in absorption tower second outlet (12B2)；
Flash tank first outlet (13B1)；And
Flash tank second outlet (13B2)；
Regenerator (14), and have：
Regenerator first entrance (14A1) is communicated in flash tank second outlet (13B2)；
Regenerator second entrance (14A2)；
Regenerator third entrance (14A3)；
Regenerator first outlet (14B1)；
Regenerator second outlet (14B2)；And
Regenerator third exports (14B3), is set to the top of regenerator (14)；
Pressure-regulating valve (V1) is communicated in regenerator third outlet (14B3)；
Lean solution tank (15), has：
Lean solution tank first entrance (15A1) is communicated in regenerator first outlet (14B1)；
Lean solution tank second entrance (15A2)；And
Lean solution tank exports (15B)；
Circulating pump (16), has：
Pump entry (16A) is communicated in lean solution tank outlet (15B)；And
Circulating-pump outlet (16B) is communicated in absorption tower second entrance (12A2)；
Air blower (17) is communicated in regenerator second entrance (14A2)；
Sulfur foam pumps (18), has：
Sulfur foam pump intake (18A) is communicated in regenerator second outlet (14B2)；And
Sulfur foam pump discharge (18B) is communicated in regenerator third entrance (14A3)；
Sulfur foam tank (19), has：
Sulfur foam tank entrance (19A) is communicated in sulfur foam pump discharge (18B)；And
Sulfur foam tank exports (19B)；
Centrifuge (20), has：
Centrifuge entrance (20A) is communicated in sulfur foam tank outlet (19B)；
Centrifuge first outlet (20B1) is communicated in external storage sulphur device (T1)；And centrifuge second outlet (20B2), even
Pass through lean solution tank second entrance (15A2)；
Wherein,
External sulfur-containing gas is via gas-liquid separator entrance (11A) into gas-liquid separator (11) and in gas-liquid separator
(11) gas-liquid separation is carried out in, the sulfurous gas that gas-liquid separator (11) is isolated exports (11B) via gas-liquid separator, absorbs
Tower first entrance (12A1) is into absorption tower (12)；
Sulphur in sulfurous gas becomes purified gas and via absorption tower first outlet after being absorbed by the doctor solution in absorption tower (12)
(12B1) is expelled directly out, and the doctor solution in absorption tower (12) becomes the rich solution containing sulphur simple substance after absorbing the sulphur in sulfurous gas
And via absorption tower second outlet (12B2), flash tank entrance (13A) into flash tank (13)；
Rich solution containing sulphur simple substance carries out flash distillation decompression in flash tank (13), and the flashed vapour that flash distillation decompression generates is via flash tank
First outlet (13B1) is expelled directly out, and flashes the rich solution containing sulphur simple substance after decompression via flash tank second outlet
(13B2), regenerator first entrance (14A1) are into regenerator (14)；
Air blower (17) blasts air via regenerator second entrance (14A2) into regenerator (14), and air makes regenerator (14)
Interior rich solution is aoxidized and regenerated as lean solution and the sulphur simple substance in regenerator (14) is made to form sulfur foam in regenerator (14)；
Regenerator (14) is under the collective effect of air blower (17) and flash tank (13) so that the pressure in regenerator (14) is higher than
External atmosphere pressure, and pressure-regulating valve (V1) adjusts pressure and guarantor in regenerator (14) by regenerator third outlet (14B3)
The pressure demonstrate,proved in regenerator (14) is constant；
Lean solution is via regenerator first outlet (14B1), lean solution tank first entrance (15A1) into lean solution tank (15)；
Sulfur foam is pumped into sulfur foam in (18) via regenerator second outlet (14B2), sulfur foam pump intake (18A),
Then under the action of sulfur foam pumps (18), sub-fraction sulfur foam is via sulfur foam pump discharge (18B), regenerator the
Three entrances (14A3) reenter and desulfurization regeneration are carried out in regenerator (14), and most of sulfur foam is pumped out via sulfur foam
Mouthful (18B), sulfur foam tank entrance (19A) are into sulfur foam tank (19)；
Sulfur foam in sulfur foam tank (19) exports (19B) via sulfur foam tank, centrifuge entrance (20A) enters centrifugation
In machine (20), then under the action of centrifuge (20), sulfur foam is dehydrated to form sulphur, sulphur via centrifuge first outlet
(20B1) is discharged in external storage sulphur device (T1), and the moisture that sulfur foam is removed in centrifuge (20) is via centrifuge
Second outlet (20B2), lean solution tank second entrance (15A2) are into lean solution tank (15)；
Regenerated lean solution is passed through after being mixed in lean solution tank (15) with the moisture removed in centrifuge (20) by poor in regenerator (14)
Flow container outlet (15B), pump entry (16A) are into circulating pump (16), then under the action of circulating pump (16) via following
Ring pump discharge (16B), absorption tower second entrance (12A2), which are promoted in absorption tower (12) and cycle carried out in absorption tower (12), to be made
With.
2. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that regeneration
Pressure in tower (14) is 0.02MPa (G)~0.07MPa (G).
3. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that wet type
The desulphurization system of oxidation-reduction method further includes：
Liquid level gauge (21), for showing the liquid level in regenerator (14)；And
Flow control valve (V2) is set between regenerator first outlet (14B1) and lean solution tank first entrance (15A1), and leads to
Letter is connected to liquid level gauge (21) to control liquid level in regenerator (14) and flow into the poor of lean solution tank (15) from regenerator (14)
The flow of liquid.
4. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that wet type
The desulphurization system of oxidation-reduction method further includes：Flowmeter (22) is set to sulfur foam pump discharge (18B) and enters with sulfur foam tank
Between mouth (19A), sulfur foam tank (19) is flowed into for controlling the liquid level in regenerator (14) and pumping (18) from sulfur foam
Sulfur foam flow.
5. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that gas-liquid
Separator inlet (11A) is communicated in external feeder (T2) with the sulfur-containing gas outside reception.
6. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that absorb
Tower first outlet (12B1) is communicated in external the first caisson (T3) so that the purified gas in absorption tower (12) is discharged into first
In caisson (T3).
7. the regenerative sulfur binding system with pressure according to claim 1 based on wet type oxidation-reduction process, which is characterized in that flash distillation
Tank first outlet (13B1) is communicated in external the second caisson (T4) so that the flashed vapour in flash tank (13) is discharged into second
In caisson (T4).
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