CN108211725A - A kind of system and device for removing hydrogen sulfide in gas phase and application - Google Patents
A kind of system and device for removing hydrogen sulfide in gas phase and application Download PDFInfo
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- CN108211725A CN108211725A CN201611188036.2A CN201611188036A CN108211725A CN 108211725 A CN108211725 A CN 108211725A CN 201611188036 A CN201611188036 A CN 201611188036A CN 108211725 A CN108211725 A CN 108211725A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/002—Removal of contaminants
- C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
- C10K1/004—Sulfur containing contaminants, e.g. hydrogen sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/105—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing metal compounds other than alkali- or earth-alkali carbonates, -hydroxides, oxides, or salts of inorganic acids derived from sulfur
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/105—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing metal compounds other than alkali- or earth-alkali carbonates, -hydroxides, oxides, or salts of inorganic acids derived from sulfur
- C10K1/106—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids containing metal compounds other than alkali- or earth-alkali carbonates, -hydroxides, oxides, or salts of inorganic acids derived from sulfur containing Fe compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
- C10K1/14—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors organic
-
- 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
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
Abstract
The invention discloses a kind of system and device for removing hydrogen sulfide in gas phase, including unstripped gas entrance, air intake, separator, twin-stage rotary packed bed absorption and regeneration device, demister, lean solution tank, rich solution tank, settling separation system and sulfur recovery system.The gas access of unstripped gas entrance and separator connects；Gas vent, demister, lean solution tank, rich solution tank, air intake, exhaust port, the settling separation system of separator are connect respectively with twin-stage rotary packed bed absorption and regeneration device；The supernatant liquid outlet of settling separation system is connect with the liquid inlet of lean solution tank；Bypass is equipped between settling separation system and lean solution tank, is connected to rich solution tank liquid inlet by the road；Lower floor's liquid outlet of settling separation system is connect with sulfur recovery system.Traditional absorption equipment and generating apparatus again are incorporated in same equipment by the present invention, reduce industrial energy consumption and industrial floor space；Using rotor device, process mass-transfer efficiency is greatly enhanced.
Description
Technical field
The present invention relates to gas purification technique fields.It is filled more particularly, to a kind of system for removing hydrogen sulfide in gas phase
It puts and applies.
Background technology
In the industrial production or in industrial tail gas, sulfide hydrogen unstripped gas is very common, such as natural gas, half water coal
Gas, oven gas, synthesis gas etc..Sulfur containing gas can cause equipment burn into catalyst poisoning, equipment corrosion etc., sulphur-containing exhaust gas
Discharge can also effectively cause problem of environmental pollution.It can all cause human hair repiece pain, dizziness etc. containing 0.1% hydrogen sulfide in air
Symptom severely impacts the normal living safety of resident.It is right with the increasingly increase of social development and people to environmental requirement
Desulfurization requirement is also higher and higher.Active demand has efficient, low input, recycling and non-secondary pollution desulfurization technology, to reasonable
Efficent use of resources promotes environmental protection to be of great significance.
Handle H both at home and abroad at present2There are many method of S, mainly there is dry method, wet method and bioanalysis three categories.It is taken off in numerous
Except in hydrogen sulfide technology in gas, wet oxidation process because its desulfurization thoroughly, secondary pollution, operating flexibility will not be caused larger due to
Relatively broad application is arrived.In general, the common absorption equipment of wet oxidation desulfurization is set for conventional towers such as packed tower, sieve-plate towers
It is standby, by doctor solution and sulfuric acid gas counter current contacting inside absorption tower in traditional equipment, achieve the purpose that purification.Because by
To the limitation of conventional articulated gravity field, the relative velocity of gas two-phase is very slow, and gas-liquid renewal speed is also relatively slow, thus mass transfer intensity is not
Greatly, the shortcomings of absorption efficiency is relatively low, and operating flexibility is low, and equipment volume is huge, filler easily blocks, and driving and parking is difficult.
Platform technology of the high-gravity technology as a process intensification, had in separation, reaction and absorption etc. has very much
Application, and with mass-transfer efficiency is high, equipment volume is small, driving and parking is easy, simple operation and other advantages.
Chinese patent 200310101838.1 reports sulphur in a kind of high-gravity rotating bed and organic amine absorbing and removing gas
Change the method for hydrogen and dust, but without reference to the regeneration method of follow-up organic amine.
Chinese patent 200710101508.0 reports a kind of method of natural gas high gravity desulfurization hydrogen, which is passing
On the basis of organic amine of uniting absorbs sulphur technique, absorption tower is replaced, but the recovery time is long, sulphur using high-gravity rotating bed packed bed
Separation equipment it is huge.
Chinese patent 200910266168.6 proposes a kind of Complexing Iron desulfurizing agent for being suitable for high gravity desulfurization, has full
(up to 0.6g/L) big with Sulfur capacity, absorption rate is fast and efficient, and solution property stabilization is easily recycled without degradation, sulphur, side reaction
It is few.
Chinese invention patent 201110076120.6 uses hypergravity machine instead of traditional low mass transfer efficiency reactor, in sulphur
Change using cross_flow rotating packed bed in hydroxide and catalyst regeneration, which merges into an equipment by rich solution slot, i.e.,
Subsider nevertheless, using gas-liquid contanct equipment of the cross_flow rotating packed bed as Complexing Iron desulfurization, produces in sweetening process
Raw sulphur is easily enriched in wire packing, the wire packing of rotor outer layer is caused to block, especially hydrogen sulfide in gas phase is dense
When degree is higher, block more serious.The technique is still without solving the problems, such as sulfur plug hypergravity machine filler, and regeneration technology
It is complex.
Chinese patent 201310060031.1 uses pre-oxidation desulfurization-hypergravity oxidation sweetening-precipitated sulfur-hypergravity again
Raw process route is also to use hypergravity regenerating unit, and sulphur can be also generated in regenerative process, blocks hypergravity filler, and
Filter membrane is equipped with before hypergravity regenerating unit is entered, increases industrial cost, the process is more complicated, and energy consumption improves, and obtains and does not repay
It loses.
Therefore, the present invention proposes a kind of system and device for removing hydrogen sulfide in gas phase, will absorb and regenerative response process
It is carried out on same hypergravity machine simultaneously, reduces industrial energy consumption, reduce floor space.The device desulfuration efficiency is high, takes up an area
Area is small, the renewable integrated continuous operation of doctor solution, and using-rotor structure is determined in regenerative process, largely
Solve the problems, such as that there are sulfur plug super-gravity device fillers for existing gravity Method oxidation sweetening-regenerating unit.
Invention content
It is an object of the present invention to provide a kind of system and devices for removing hydrogen sulfide in gas phase.The present invention proposes one
Kind desulfuration efficiency is high, and floor space is small, and the hydrogen sulphide removal unit of the renewable integrated continuous operation of doctor solution is revolved using twin-stage
Turn packed bed, absorption process and regenerative process are carried out on same hypergravity machine simultaneously, reduce industrial energy consumption, and existing
With the presence of gravity Method oxidation sweetening-regenerating unit sulfur plug super-gravity device filler problem, the present invention uses regenerating unit
Rotor using fixed-rotor structure, largely solve the problem of hypergravity filler blocks sulphur.
It is another object of the present invention to provide a kind of applications for the system and device for removing hydrogen sulfide in gas phase.
To reach above-mentioned first purpose, the present invention uses following technical proposals：
A kind of system and device for removing hydrogen sulfide in gas phase, the system and device include unstripped gas entrance, and air intake divides
From device, twin-stage rotary packed bed absorption-regenerating unit, demister, lean solution tank, rich solution tank, exhaust port, settling separation system
And sulfur recovery system；
The twin-stage rotary packed bed absorption-regenerating unit includes pedestal, motor, shaft coupling, twin-stage rotary packed bed, the
Level-one gas access, first order gas vent, first order liquid inlet, first order liquid outlet, second level gas vent, second
Grade liquid inlet, second level gas access and second level liquid outlet；The twin-stage rotary packed bed include first order rotor and
Second level rotor；
The gas access of the unstripped gas entrance and separator connects；The gas vent of the separator and first order gas
Entrance connects；The first order gas vent is connect with demister；The first order liquid inlet and the liquid outlet of lean solution tank
Connection；The first order liquid outlet is connect with the liquid inlet of rich solution tank；
The liquid outlet of the rich solution tank is connect with second level liquid inlet；The air intake and second level gas access
Connection；The second level gas vent is connect with exhaust port；The liquid of the second level liquid outlet and settling separation system
Body entrance connects；
The supernatant liquid outlet of the settling separation system is connect with the liquid inlet of lean solution tank；
Bypass is equipped between the settling separation system and lean solution tank, is connected to rich solution tank liquid inlet by the road；
Lower floor's liquid outlet of the settling separation system is connect with sulfur recovery system.
Preferably, the twin-stage rotary packed bed absorption-regenerating unit is vertical installation；The outside motor is equipped with bottom
Seat, the output shaft of motor are fixedly connected with shaft coupling, and the output shaft of shaft coupling passes through bearing block and the rotation of twin-stage rotary packed bed
Shaft is fixedly and coaxially connected；Demarcation strip is equipped between the first order rotor and second level rotor；The twin-stage rotor it is each
Grade is equipped with liquid distribution trough at inner edge；Housing above the first order rotor is equipped with first order gas access, first order gas
Outlet and first order liquid inlet；The housing of side is equipped with first order liquid outlet below the first order rotor；Described second
The housing of both sides is equipped with second level gas vent and second level liquid inlet above grade rotor；The shell of the second level rotor side
Body is equipped with second level gas access；Housing below the second level rotor is equipped with second level liquid outlet.
Preferably, the first order rotor is made of rotor and filler；The filler is selected from wire mesh packing, polytetrafluoro
Filler, ceramic packing, structuring filling or structured packing.
Preferably, the second level rotor is made of fixed-rotor.Fixed-rotor of the second level rotor is by stator and turns
Son is formed；The stator and rotor are all concentric ring structure；The stator is fixed on end cap, and rotor is fixed on rotator seat,
It is rotated by motor and drives rotation；The channel of concentric ring circumferentially on the stator and rotor is straight trough, rear curved groove or antecurvature
Slot is either circular hole or slotted hole or is pin；The shape of the pin is circle, ellipse, square, rectangle, three
Angular or diamond shape；Multilayer concentric ring and the diameter of the multilayer concentric ring on rotor on the stator differ, and intersect and are mounted on one
It rises.
Preferably, the system and device further includes the first valve, the first air blower, the second air blower, the first centrifugal pump, stream
Gauge, the second centrifugal pump, third centrifugal pump, the second valve, third valve, the 4th centrifugal pump, third air blower and the 4th valve.
Preferably, the unstripped gas entrance passes sequentially through the first valve and the first air blower and connects with separator gas entrance
It connects；The air intake is connect by the second air blower with second level gas access；The liquid outlet of the lean solution tank leads to successively
The first centrifugal pump and flowmeter is crossed to connect with first order liquid inlet；The rich solution tank liquid outlet passes through the second centrifugal pump and
Secondary liquid entrance connects；The supernatant liquid outlet of the settling separation system pass sequentially through third centrifugal pump and the second valve with
Lean solution tank entrance connects；Bypass is equipped between third centrifugal pump and the second valve, bypass passes through third valve and rich sprayer in fluid
Entrance connects；Lower floor's liquid outlet of the settling separation system is connect by the 4th centrifugal pump with sulfur recovery system entrance；
The sulfur recovery system is connected with third air blower and the 4th valve.
Preferably, pH monitoring points, the pH monitoring points and the second valve and third valve are equipped on settling separation system
Interrelated, when pH value is when between 8.15~8.5, the second valve is opened, while third valve is closed, and regenerated rich solution is sent
It returns in lean solution tank, otherwise pH value, not in above-mentioned section, the second valve is closed, while third valve is opened, by regenerated richness
Liquid is sent in rich solution tank, ultimately forms regeneration cycle system.
For the first order of twin-stage rotary packed bed for removing removing hydrogen sulfide, the second level is used for the regeneration of rich solution in the present invention.
To reach above-mentioned second purpose, the present invention uses following technical proposals：
A kind of system and device for removing hydrogen sulfide in gas phase is in answering for the industrial tail gas field of purification containing hydrogen sulfide
With the gas purification includes the following steps：
1) hydrogen sulfide containing unstripped gas enters separator by unstripped gas entrance by the first valve and the first air blower, removes
The solid phase contained in unstripped gas and liquid phase impurity are gone, obtains the gas purified for the first time；
2) gas purified for the first time that step 1) obtains is discharged from the gas vent of separator, through first order gas access into
Enter the first order rotor in twin-stage rotary packed bed absorption-regenerating unit；Meanwhile lean solution is flowed out from liquid outlet in lean solution tank,
By the first centrifugal pump and flowmeter, in twin-stage rotary packed bed absorption-regenerating unit is entered through first order liquid inlet
Primary rotor；Unstripped gas comes into full contact with generation hydrogen sulfide absorption on the wire packing of first order rotor with lean solution and reacts, and removes
The gas of entrainment liquid is directly put by demister row in air through first order gas vent, absorbs the rich solution after hydrogen sulfide through first
Grade liquid outlet then enters rich solution tank；
3) air, by the second air blower, enters twin-stage rotary packed bed by air intake through second level gas access
Second level rotor in absorption-regenerating unit；The rich solution in rich solution tank in step 2) is by the second centrifugal pump, through second level liquid
Body entrance enters the second level rotor in twin-stage rotary packed bed absorption-regenerating unit, and rich solution is with air in the rotor of the second level
Fixed-rotor in be sufficiently mixed and occur to aoxidize or resolving reaction, the absorbing liquid after being regenerated, the air after oxidation is through second
Grade gas vent is directly discharged in air；
4) absorbing liquid in step 3) after regeneration is discharged through second level liquid outlet, into settling separation system and is occurred
Sedimentation separation, upper strata are regeneration rich solution, and lower floor is sulphur；Upper strata regenerates rich solution and is supervised by the pH monitoring points on settling separation system
Survey pH value；When pH value is when between 8.15~8.5, the second valve is opened, while third valve is closed, and absorbing liquid enters lean solution
Tank forms regeneration cycle system；When pH value is not in above-mentioned section, the second valve is closed, while third valve is opened, and regeneration is rich
Liquid enters in rich solution tank by the road, forms regeneration cycle system；The sulphur of lower floor enters sulfur recovery system through the 4th centrifugal pump；
The sulphur introduces air by third air blower in sulfur recovery system and removes extra moisture, is arranged by the 4th valve
Go out.
Preferably, hydrogen sulfide containing unstripped gas described in step 1) is natural gas, associated gas, oil field tail gas, recovers the oil
Exhaust gas, oil field produced gas, oven gas, synthesis gas or Claus tail gases.
Preferably, lean solution is Complexing Iron absorbent, sodium carbonate or anthraquinone disulphonate in lean solution tank described in step 2).
It is a discovery of the invention that the first rotor and bitrochanteric synergistic effect in twin-stage rotary packed bed absorption-regenerating unit,
Not only so that the renewable integrated continuous operation of doctor solution, enhances process mass-transfer efficiency, shorten oxidation sweetening and desulfurizing agent again
The raw time, and solve the problems, such as that hypergravity filler blocks sulphur using fixed-rotor structure in regenerative process.
Beneficial effects of the present invention are as follows：
Traditional absorption equipment and generating apparatus again are incorporated in same equipment by the present invention, reduce industrial energy consumption and work
Industry floor space；Rotor uses wire packing structure in absorption process, enhances process mass-transfer efficiency, rotor is adopted in regenerative process
With fixed-rotor structure, sulfur plug is largely prevented, had regenerating unit simple in the past relatively, operation easily, is taken up an area
The advantages such as area is small.
Description of the drawings
The specific embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows to remove the schematic diagram of the system and device of hydrogen sulfide in gas phase in the embodiment of the present invention 1.
Fig. 2 shows fixed-internal rotor rotor knots in twin-stage rotary packed bed absorption-regenerating unit in the embodiment of the present invention 1
Composition.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar component is indicated with identical reference numeral in attached drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
In the description of the present invention, unless otherwise indicated, " multiple " are meant that two or more；Term " on ",
" under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", the orientation of the instructions such as " tail portion " or position relationship be
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the present invention.
Embodiment 1
As shown in Figure 1, the present invention proposes a kind of system and device for removing hydrogen sulfide in gas phase, including unstripped gas entrance 1,
First valve 2, the first air blower 3, separator 4, twin-stage rotary packed bed absorption-regenerating unit 5, demister 6, first order tail gas
Floss hole 7, fresh absorbent adding mouth 8, lean solution tank 9, the first centrifugal pump 10, flowmeter 11, rich solution tank 12, the second centrifugal pump
13, air intake 14, the second air blower 15, second level exhaust port 16, settling separation system 17, third centrifugal pump 18, the
Two valves 19, third valve 20, the 4th centrifugal pump 21, sulfur recovery system 22, third air blower 23, the 4th valve 24.
The twin-stage rotary packed bed absorption-regenerating unit 5 is vertical installation, including pedestal 501, motor 502, shaft coupling
503rd, twin-stage rotary packed bed, first order gas access 506, first order gas vent 507, first order liquid inlet 508, first
Grade liquid outlet 509, second level gas vent 510 and second level liquid inlet 511, second level gas access 512 and the second level
Liquid outlet 513；502 outside of motor is equipped with pedestal 501, and the output shaft of motor 502 is fixedly connected with shaft coupling 503, shaft coupling
503 output shaft is fixedly connected across bearing block with the concentric rotation axis of twin-stage rotary packed bed；Twin-stage rotary packed bed includes
First order rotor 504 and second level rotor 505；Liquid distribution trough is equipped at every level-one inner edge of twin-stage rotor；First order rotor
The housing of 504 tops is equipped with first order gas access 506, first order gas vent 507 and first order liquid inlet 508；First
The housing of 504 lower section side of grade rotor is equipped with first order liquid outlet 509；The housing of 504 top both sides of second level rotor is equipped with
Second level gas vent 510 and second level liquid inlet 511；The housing of 504 side of second level rotor enters equipped with second level gas
Mouth 512；The housing of 504 lower section of second level rotor is equipped with second level liquid outlet 513；
The unstripped gas entrance 1 passes sequentially through the first valve 2 and the first air blower 3 is connect with 4 gas access of separator；Institute
The gas vent for stating separator 4 is connect with first order gas access 506；The first order gas vent 507 connects with demister 6
It connects；
The liquid outlet of the lean solution tank 9 passes sequentially through the first centrifugal pump 10 and flowmeter 11 and first order liquid inlet
508 connections；
The first order liquid outlet 509 is connect with the liquid inlet of rich solution tank 12；
12 liquid outlet of rich solution tank is connect by the second centrifugal pump 13 with second level liquid inlet 511；
The air intake 14 is connect by the second air blower 15 with second level gas access 512；The second level gas
Outlet 510 is connect with exhaust port 16；The liquid inlet of the second level liquid outlet 513 and settling separation system 17 connects
It connects；
The settling separation system 17 supernatant liquid outlet pass sequentially through 18 and second valve 19 of third centrifugal pump with it is poor
9 liquid inlet of flow container connects；
Bypass is equipped between 18 and second valve 19 of third centrifugal pump, bypass passes through third valve 20 and 12 liquid of rich solution tank
Entrance connects；
Lower floor's liquid outlet of the settling separation system 17 passes through the 4th centrifugal pump 21 and 22 entrance of sulfur recovery system
Connection；
The sulfur recovery system 22 is connected with 23 and the 4th valve 24 of third air blower.
PH monitoring points, the pH monitoring points and 20 phase of the second valve 19 and third valve are equipped on settling separation system 17
Mutual correlation, when pH value is when between 8.15~8.5, the second valve 19 is opened, while third valve 20 is closed, by regenerated rich solution
Send back in lean solution tank 9, otherwise pH value, not in above-mentioned section, the second valve 19 is closed, while third valve 20 is opened, will again
Raw rich solution is sent in rich solution tank 12, ultimately forms regeneration cycle system.
First order rotor in the twin-stage rotary packed bed absorption-regenerating unit is made of rotor and filler；It is described double
Second level rotor in grade rotary packed bed absorption-regenerating unit is made of fixed-rotor；Twin-stage rotary packed bed absorption-regeneration
For fixed-internal rotor rotor structure figure in device as shown in Fig. 2, rotor is concentric ring structure, channel circumferentially is circular hole.
Gas purification includes the following steps：
1) hydrogen sulfide containing unstripped gas enters separator by unstripped gas entrance 1 by the first valve 2 and the first air blower 3
4, the solid phase contained in unstripped gas and liquid phase impurity are removed, obtains the gas purified for the first time；
2) gas purified for the first time that step 1) obtains is discharged from the gas vent of separator 4, through first order gas access
506 enter the first order rotor 504 in twin-stage rotary packed bed absorption-regenerating unit 5；Meanwhile in lean solution tank 9 lean solution from liquid
Outlet outflow by the first centrifugal pump 10 and flowmeter 11, enters twin-stage rotary packed bed through first order liquid inlet 508 and inhales
First order rotor 504 in receipts-regenerating unit 5；Unstripped gas comes into full contact with lean solution on the wire packing of first order rotor 22
Hydrogen sulfide absorption reaction occurs, except the gas of deentrainment liquid is directly discharged into air through first order gas vent 507 by demister 6
In, it absorbs the rich solution after hydrogen sulfide and then enters rich solution tank 12 through first order liquid outlet 509；
3) air, by the second air blower 15, is entered twin-stage through second level gas access 512 and rotated by air intake 14
Second level rotor 505 in packed bed absorption-regenerating unit 5；The rich solution in rich solution tank 12 in step 2) passes through the second centrifugation
Pump 13 enters the second level rotor 505 in twin-stage rotary packed bed absorption-regenerating unit 5 through second level liquid inlet 511, rich
Liquid and air are sufficiently mixed in fixed-rotor in second level rotor 505 and oxidation or resolving reaction occur, after being regenerated
Absorbing liquid, the air after oxidation are directly discharged to through second level gas vent 510 in air；
4) absorbing liquid in step 3) after regeneration is discharged through second level liquid outlet 513, into settling separation system 17
And sedimentation separation occurs, upper strata is regeneration rich solution, and lower floor is sulphur；Upper strata regeneration rich solution passes through the pH on settling separation system 17
Monitoring point monitors pH value；When pH value is when between 8.15~8.5, the second valve 19 is opened, while third valve 20 is closed, and is absorbed
Liquid enters lean solution tank 9, forms regeneration cycle system；When pH value is not in above-mentioned section, the second valve 19 is closed, while third valve
Door 20 is opened, and regeneration rich solution enters by pipeline in rich solution tank 12, forms regeneration cycle system；The sulphur of lower floor is through the 4th centrifugation
Pump 21 enters sulfur recovery system 22；The sulphur introduces air by third air blower 23 in sulfur recovery system 22 and removes
Extra moisture is discharged by the 4th valve 24.
Embodiment 2
Associated gas removing hydrogen sulfide is carried out using the device and technique of embodiment 1：
Treating capacity：20000Nm3, pressure 12MPa, hydrogen sulfide content 200ppm, gas temperature is 60 DEG C, network in lean liquid tank
Iron is closed as absorbing liquid, absorbing liquid dosage 150m3/h.Using the process, outlet associated gas hydrogen sulfide content is 2ppm, then
Operation carries out clearing up fixed-rotor blocking for 1 year during raw.
Embodiment 3
Natural gas removing hydrogen sulfide is carried out using the device and technique of embodiment 1：
Treating capacity：60000Nm3, pressure 1MPa, hydrogen sulfide content 6000ppm, gas temperature is 6 DEG C, is selected in lean liquid tank
Complexing Iron is as absorbing liquid, absorbing liquid dosage 100m3/h.Using the process, outlet associated gas hydrogen sulfide content is 3ppm,
It is run in regenerative process and carries out within 1 year clearing up fixed-rotor blocking.
Embodiment 4
Semiwater gas removing hydrogen sulfide is carried out using the device and technique of embodiment 1：
Treating capacity：120000Nm3, pressure 2MPa, hydrogen sulfide content 4000ppm, gas temperature is 50 DEG C, is selected in lean liquid tank
By the use of Complexing Iron as absorbing liquid, absorbing liquid dosage 500m3/h.Using the process, outlet associated gas hydrogen sulfide content is
4ppm, runs in regenerative process to carry out within 1 year clearing up fixed-rotor and blocks.
Comparative example 1
Embodiment 2 is repeated, changes traditional absorption tower apparatus and regenerating unit by twin-stage is rotary packed bed, other conditions are not
Become, the results show that outlet associated gas hydrogen sulfide content is 20ppm, and in regenerative process, easy blockage phenomenon.
Comparative example 2
Embodiment 3 is repeated, using the present apparatus, changes fixed-rotor structure in wherein second level rotor into wire packing knot
Structure, other conditions are constant, the results show that outlet associated gas hydrogen sulfide content is 10ppm, in the absorbent regeneration stage, react
It generates sulphur in journey to block wire packing, continuous operation carries out cleaning wire packing for 3 months and blocks.
Conclusion：The first order rotor of twin-stage rotary packed bed for removing removing hydrogen sulfide, use by second level rotor in the present invention
It in the regeneration of rich solution, cooperates therebetween, acts synergistically, traditional absorption equipment and generating apparatus again are incorporated in same
In equipment so that the renewable integrated continuous operation of doctor solution enhances process mass-transfer efficiency, shortens oxidation sweetening and desulfurizing agent
Recovery time solves the problems, such as that hypergravity filler blocks sulphur, and lacking any composition can all to remove the process of hydrogen sulfide
It impacts in some aspects.And the product of the present invention is reducing industrial energy consumption and industrial floor space, strengthening process mass transfer
Efficiency prevents sulfur plug etc. all to have excellent effect.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention for those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is every to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the row of protection scope of the present invention.
Claims (10)
1. a kind of system and device for removing hydrogen sulfide in gas phase, which is characterized in that the system and device includes unstripped gas entrance
(1), air intake (14), separator (4), twin-stage rotary packed bed absorption-regenerating unit (5), demister (6), lean solution tank
(9), rich solution tank (12), exhaust port (16), settling separation system (17) and sulfur recovery system (22)；
The twin-stage rotary packed bed absorption-regenerating unit (5) includes pedestal (501), motor (502), shaft coupling (503), double
Grade rotary packed bed, first order gas access (506), first order gas vent (507), first order liquid inlet (508), first
Grade liquid outlet (509), second level gas vent (510), second level liquid inlet (511), second level gas access (512) and
Second level liquid outlet (513)；The twin-stage rotary packed bed includes first order rotor (504) and second level rotor (505)；
The unstripped gas entrance (1) connect with the gas access of separator (4)；The gas vent and first of the separator (4)
Grade gas access (506) connects；The first order gas vent (507) connect with demister (6)；The first order liquid inlet
(508) liquid outlet with lean solution tank (9) is connect；The first order liquid outlet (509) and the liquid inlet of rich solution tank (12)
Connection；
The liquid outlet of the rich solution tank (12) is connect with second level liquid inlet (511)；The air intake (14) and second
Grade gas access (512) connects；The second level gas vent (510) connect with exhaust port (16)；The second level liquid
Body outlet (513) is connect with the liquid inlet of settling separation system (17)；
The supernatant liquid outlet of the settling separation system (17) is connect with the liquid inlet of lean solution tank (9)；
Bypass is equipped between the settling separation system (17) and lean solution tank (9), rich solution tank (12) liquid is connected to by the road and enters
Mouthful；
Lower floor's liquid outlet of the settling separation system (17) is connect with sulfur recovery system (22).
A kind of 2. system and device for removing hydrogen sulfide in gas phase according to claim 1, which is characterized in that the twin-stage rotation
Turn packed bed absorption-regenerating unit (5) as vertical installation；
Pedestal (501) is equipped with outside the motor (502), the output shaft of motor (502) is fixedly connected with shaft coupling (503), is joined
The output shaft of axis device (503) is fixedly connected across bearing block with the concentric rotation axis of twin-stage rotary packed bed；
Demarcation strip is equipped between the first order rotor (504) and second level rotor (505)；
Liquid distribution trough is equipped at every level-one inner edge of the twin-stage rotor；
Housing above the first order rotor (504) is equipped with first order gas access (506), first order gas vent (507)
With first order liquid inlet (508)；The housing of side is equipped with first order liquid outlet below the first order rotor (504)
(509)；
The housing of both sides is equipped with second level gas vent (510) and second level liquid inlet above the second level rotor (504)
(511)；The housing of second level rotor (504) side is equipped with second level gas access (512)；The second level rotor
(504) housing below is equipped with second level liquid outlet (513).
A kind of 3. system and device for removing hydrogen sulfide in gas phase according to claim 1, which is characterized in that the first order
Rotor (504) is made of rotor and filler；The filler is selected from wire mesh packing, polytetrafluoro filler, ceramic packing, structuring
Filler or structured packing.
A kind of 4. system and device for removing hydrogen sulfide in gas phase according to claim 3, which is characterized in that the second level
Rotor (505) is made of fixed-rotor；Fixed-rotor of the second level rotor (505) is made of stator and rotor；The stator
It is all concentric ring structure with rotor；The stator is fixed on end cap, and rotor is fixed on rotator seat, is rotated by motor and is driven rotation
Turn；The channel of concentric ring circumferentially on the stator and rotor is straight trough, rear curved groove or preceding curved groove or is circular hole or length
Circular hole is pin；The shape of the pin is circle, ellipse, square, rectangle, triangle or diamond shape；It is described fixed
Multilayer concentric ring and the diameter of the multilayer concentric ring on rotor on son differ, and intersection is installed together.
A kind of 5. system and device for removing hydrogen sulfide in gas phase according to claim 1, which is characterized in that the system dress
It puts and further includes the first valve (2), the first air blower (3), the second air blower (15), the first centrifugal pump (10), flowmeter (11), the
Two centrifugal pumps (13), third centrifugal pump (18), the second valve (19), third valve (20), the 4th centrifugal pump (21), third air blast
Machine (23) and the 4th valve (24).
A kind of 6. system and device for removing hydrogen sulfide in gas phase according to claim 5, which is characterized in that the unstripped gas
Entrance (1) passes sequentially through the first valve (2) and the first air blower (3) and is connect with separator (4) gas access；
The air intake (14) is connect by the second air blower (15) with second level gas access (512)；
The liquid outlet of the lean solution tank (9) passes sequentially through the first centrifugal pump (10) and flowmeter (11) and first order liquid inlet
(508) it connects；
Rich solution tank (12) liquid outlet is connect by the second centrifugal pump (13) with second level liquid inlet (511)；
The supernatant liquid outlet of the settling separation system (17) pass sequentially through third centrifugal pump (18) and the second valve (19) and
Lean solution tank (9) entrance connects；
Bypass is equipped between third centrifugal pump (18) and the second valve (19), bypass passes through third valve (20) and rich solution tank (12)
Liquid inlet connects；
Lower floor's liquid outlet of the settling separation system (17) is entered by the 4th centrifugal pump (21) with sulfur recovery system (22)
Mouth connection；
The sulfur recovery system (22) is connected with third air blower (23) and the 4th valve (24).
7. a kind of system and device for removing hydrogen sulfide in gas phase according to claim 6, which is characterized in that in sedimentation separation
System (17) is equipped with pH monitoring points, and the pH monitoring points and the second valve (19) and third valve (20) are interrelated, work as pH
When between 8.15~8.5, open, while third valve (20) is closed, and regenerated rich solution is sent back to by the second valve (19) for value
In lean solution tank (9), otherwise pH value, not in above-mentioned section, the second valve (19) is closed, while third valve (20) is opened, it will
Regenerated rich solution is sent to rich solution tank (12), ultimately forms regeneration cycle system.
8. if a kind of system and device of removing hydrogen sulfide in gas phase as described in claim 1-7 is any is for containing hydrogen sulfide
The application of industrial tail gas field of purification, which is characterized in that the gas purification includes the following steps：
1) hydrogen sulfide containing unstripped gas enters separation by unstripped gas entrance (1) by the first valve (2) and the first air blower (3)
Device (4) removes the solid phase contained in unstripped gas and liquid phase impurity, obtains the gas purified for the first time；
2) gas purified for the first time that step 1) obtains is discharged from the gas vent of separator (4), through first order gas access
(506) into the first order rotor (504) in twin-stage rotary packed bed absorption-regenerating unit (5)；It is meanwhile poor in lean solution tank (9)
Liquid is flowed out from liquid outlet, by the first centrifugal pump (10) and flowmeter (11), through first order liquid inlet (508) into twin-stage
First order rotor (504) in rotary packed bed absorption-regenerating unit (5)；Unstripped gas is with lean solution in first order rotor (22)
It is come into full contact on wire packing and hydrogen sulfide absorption reaction occurs, except the gas of deentrainment liquid is directly through first order gas vent
(507) it is discharged into air by demister (6), absorbs the rich solution after hydrogen sulfide and then enter richness through first order liquid outlet (509)
Flow container (12)；
3) air by the second air blower (15), is revolved by air intake (14) through second level gas access (512) into twin-stage
Turn the second level rotor (505) in packed bed absorption-regenerating unit (5)；The rich solution in rich solution tank (12) in step 2) passes through
Second centrifugal pump (13), through second level liquid inlet (511) into twin-stage rotary packed bed absorption-regenerating unit (5)
Secondary rotor (505), rich solution and air are sufficiently mixed in fixed-rotor in second level rotor (505) and occur to aoxidize or solve
Analysis reaction, the absorbing liquid after being regenerated, the air after oxidation are directly discharged to through second level gas vent (510) in air；
4) absorbing liquid in step 3) after regeneration is discharged through second level liquid outlet (513), into settling separation system (17)
And sedimentation separation occurs, upper strata is regeneration rich solution, and lower floor is sulphur；Upper strata regeneration rich solution passes through on settling separation system (17)
PH monitoring points monitor pH value；When pH value is when between 8.15~8.5, the second valve (19) is opened, while third valve (20) closes
It closes, regeneration rich solution enters lean solution tank (9), forms regeneration cycle system；When pH value is not in above-mentioned section, the second valve (19) closes
It closes, while third valve (20) is opened, regeneration rich solution enters rich solution tank (12) by the road, forms regeneration cycle system；Lower floor
Sulphur is through the 4th centrifugal pump (21) into sulfur recovery system (22)；The sulphur passes through third in sulfur recovery system (22)
Air blower (23) introduces air and removes extra moisture, is discharged by the 4th valve (24).
A kind of 9. application of system and device for removing hydrogen sulfide in gas phase according to claim 8, which is characterized in that step
1) hydrogen sulfide containing unstripped gas described in is natural gas, associated gas, oil field tail gas, oil recovery exhaust gas, oil field produced gas, coke oven
Gas, synthesis gas or Claus tail gases.
A kind of 10. application of system and device for removing hydrogen sulfide in gas phase according to claim 8, which is characterized in that step
It is rapid 2) described in lean solution tank (9) lean solution be Complexing Iron absorbent, sodium carbonate or anthraquinone disulphonate.
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