CN107349749A - A kind of method and system for the admixture of gas depickling containing sour gas - Google Patents
A kind of method and system for the admixture of gas depickling containing sour gas Download PDFInfo
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- CN107349749A CN107349749A CN201710506610.2A CN201710506610A CN107349749A CN 107349749 A CN107349749 A CN 107349749A CN 201710506610 A CN201710506610 A CN 201710506610A CN 107349749 A CN107349749 A CN 107349749A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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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
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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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/204—Amines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/50—Combinations of absorbents
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Abstract
The present invention relates to a kind of deacidifying process of the admixture of gas containing sour gas, the method concentrated again after sour gas is absorbed by using absorbent and separates from admixture of gas sour gas.Also relate to a kind of system of the admixture of gas depickling containing sour gas, including absorptive unit, upgrading unit, separative element and regeneration unit.The present invention can increase the absorption rate for separating sour gas from admixture of gas, and reduce the total energy consumption for depickling operation.
Description
The application is Chinese invention patent application (denomination of invention：It is a kind of to be taken off for the admixture of gas containing sour gas
The method and system of acid；Application number：201310487939.0；The applying date：On October 17th, 2013) divisional application.
Technical field
The present invention relates to a kind of deacidifying process of effective admixture of gas, absorbent is used more particularly, to one kind
The method concentrated again after sour gas is absorbed, sour gas is separated from admixture of gas, the technique can increase acidity
The absorption rate that gas separates from admixture of gas, and reduce the total energy consumption for depickling operation.
Background technology
Many production technologies need to remove sour gas from admixture of gas, for example, initial natural gas or other bags
The depickling of the admixture of gas of a large amount of sour gas is included, described sour gas includes hydrogen sulfide (H2S), carbon dioxide (CO2)
Or similar contaminant matter.Acid gas impurities in admixture of gas are reduced to acceptable level by deacidifying process.The step
Suddenly generally completed by amine handling process, the amine handling process is relatively conventional in various types of industrial productions, such as refines oil
Factory, gas plant and chemical plant.Amine handling process using amine the aqueous solution remove sour gas (such as hydrogen sulfide and
Carbon dioxide) technique.
Common deacidifying process is solution-air absorption technique, and typical solution-air absorption technique is generally included containing being intended to remove
The admixture of gas of sour gas contacted with liquid amine aqueous solution, by amine aqueous solution as the absorbent for absorbing sour gas.
In industrial production, the amine that most generally uses is hydramine, such as monoethanolamine (MEA) and diethanol amine (DEA).Recently, by methyl
Diethanol amine (MDEA) is separated into industrial production application of interest for carbon dioxide (CO2).At present, diisopropanolamine (DIPA)
(DIPA) it is used for sulfone amine method technology and SCOT techniques, it is net that the SCOT techniques are used for Crouse (Claus) device acid tail gas
Change.
In typical solution-air absorption technique, after sour gas is inhaled into the absorbent in absorptive unit, rich gas is inhaled
Receive agent and be admitted to regeneration unit, in the regeneration unit, rich gas absorbent regenerates to be divided into and absorbed after processing and separation
Gas and lean gas absorbent.Then, the lean gas absorbent of the regeneration is cycled back into absorptive unit, and according to user
Purpose, by sour gas collect or discharge.In the solution-air of this type absorbs, the energy consumption of the regeneration technology accounts for total energy
Loss-rate weighs more than 80%, because whole absorbents must be regenerated, to be reused in absorptive unit.In addition, the allusion quotation
The solution-air absorption technique of type is limited to a kind of liquid form and uses a kind of absorbent.
The content of the invention
The present invention relates to a kind of deacidifying process of effective admixture of gas, absorbent is used more particularly, to one kind
Absorb the method concentrated again after sour gas to separate sour gas from admixture of gas, the technique can increase sour gas
The absorption rate that body separates from admixture of gas, and reduce the total energy consumption for depickling operation.
The technical scheme is that a kind of method for the admixture of gas depickling containing sour gas, the side
Method includes：
A, acid gas mixture is contacted with the absorbent in absorptive unit, the absorbent is dissolved with initial concentration
A kind of material in a solvent, one or more of the material in following composition：Amine, amino-acid salt, acid amides,
Alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, carbonate, borate, acid phosphite, phosphite,
Phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate, metaborate, biborate,
Tetraborate, pentaborate；
B, make the absorbent absorb sour gas and form rich gas absorbent；
C, the rich gas absorbent is made to concentrate to form condensed matter phase；
D, the condensed matter is made mutually to be separated from the remainder of the absorbent；The condensed matter mutually includes concentration
Condensed matter and absorbed sour gas higher than initial concentration, wherein condensed matter include material or its chemical modification
(the agent having chemical modification), absorbed sour gas include sour gas or its change
Learn modifier (the acid gas having chemical modification)；
E, the remainder of the absorbent is cycled back into absorptive unit；
F, the condensed matter is mutually delivered into regeneration unit, to obtain sour gas and the condensed matter；Also,
G, the condensed matter by regeneration is cycled back into absorptive unit.
The initial concentration of above-mentioned substance is 0.001-99.9wt%.
In a preferred embodiment, methods described includes：
A, acid gas mixture is contacted with the absorbent in absorptive unit, the absorbent is dissolved with initial concentration
Amine in a solvent；The initial concentration of the amine is 0.001-99.9wt%；
B, make the absorbent absorb sour gas and form rich gas absorbent；
C, rich gas absorbent is made to concentrate to form concentration amine phase；
D, the concentration amine is made mutually to be separated from the remainder of the absorbent；The concentration amine is mutually higher than comprising concentration
The concentration amine and absorbed sour gas of initial concentration, wherein concentration amine includes amine or its chemical modification (the amine
Having chemical modification), absorbed sour gas includes sour gas or its chemical modification
(the acid gas having chemical modification)；
E, the remainder of the absorbent is cycled back into absorptive unit；
F, the concentration amine is mutually delivered into regeneration unit, to obtain sour gas and the concentration amine；Also,
G, the concentration amine by regeneration is cycled back into absorptive unit.
Further, one or more of the sour gas in following gaseous matter：Carbon dioxide
(CO2), sulfur dioxide (SO2), sulfur trioxide (SO3), hydrogen sulfide (H2S), carbonyl sulfide (COS), carbon disulfide (CS2), mercaptan
(RSH), nitric oxide (NO), nitrogen dioxide (NO2), fluoride, hydrochloric acid.
Preferably, the amine in the above method is selected from the one or more of following material：Organic amine, MEA,
Diethanol amine, triethanolamine, monoethanolamine, isopropanolamine, ethylene amines, alkyl-alkanolamine, methyl diethanolamine, piperidines, two
Butylamine, diisopropylamine；
Preferably, the solvent is selected from one kind of following component：Water, amine, amino acid, amino-acid salt, acid amides, alcohol, second
Glycol, mercaptan, phenol, alkane, unsaturated hydrocarbon, ether, ester, aldehyde, ketone, carboxylic acid, phosphonic acids, glycol ether, carbonic acid Asia hydrocarbon
Ester, carbonic diester, sulfolane, ionic liquid, polymer, organic silicon solvent, organic fluorous solvent；Or include one or more salt
And/or the organic solution of the aqueous solution of alkali, one or more salt and/or alkali, the salt are selected from following group：Alkali, alkali salt,
Alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, alkanolamine, alkaline earth salt, phosphate, acid phosphite, phosphite,
Phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, carbonate, bicarbonate, borate, inclined boron
Hydrochlorate, biborate, tetraborate and pentaborate, and the derivative of the various salt.
Compared to the absorption rate that sour gas is individually absorbed by amine, the solvent can increase sour gas suction absorbent
Interior absorption rate.
Further, one or more of the amine in including following material：MEA, diethanol amine,
Piperidines, dibutyl amine, or diisopropylamine, triethanolamine, monoethanolamine, isopropanolamine, ethylene amines, alkyl-alkanolamine and methyl
Diethanol amine；The solvent includes at least one of following material：Water, alcohol, ethylene glycol, glycol ether, the silica of decamethyl four
Alkane and the siloxen of decamethyl four, gallic acid, PZ, benzoquinones, carbohydrazide, piperazine, Yi Zhonghuo
The aqueous solution of a variety of salt and/or alkali, the organic solution of one or more salt and/or alkali, the alkali and salt include hydroxide
Sodium, potassium hydroxide, lithium hydroxide, potassium carbonate, sodium carbonate, sodium acid carbonate, saleratus.
The absorption of the step a, step c concentration and step d separation can occur non-concurrent to occur simultaneously.
The absorption of the step a, step c concentration and step d separation can occur in same unit, can also be
Occur in different units.
In a preferred embodiment, the method for concentration includes phase conversion method (Phase Transitional
Method), phase change method (Phase Change Method), method of evaporating, gasification process, method for crystallising, UF membrane side
Method, pervaporation, extraction, filter method, method for concentration also include passing through temperature change, pressure change, change in concentration, solubility
The caused concentrate process of change, and any equipment of concentration can be provided..
The method according to the invention, it is preferred that the absorptive unit is an absorber, a membrane contactor and energy
Any equipment of air-liquid contact is enough provided.
In one embodiment, including a kind of renovation process, the renovation process are selected from the group formed by the following method：
Thermal decomposition method, air- extraction, vaporizing extract process, vacuum method, the way of distillation, handled by membrane contactor, pervaporation method, pressure differential method,
Microwave method, including by temperature change, pressure change, reach regeneration method, and the combination of above method.
Further, the renovation process be selected from thermal decomposition method, air- extraction, vaporizing extract process, vacuum method, the way of distillation and more than
The combination of method.
In a preferred embodiment, the concentration of the concentration amine before the concentration amine mutually regenerates is more than 50wt%. again
When raw, the concentration for concentrating amine is the higher the better.It is described to concentrate the concentration amine before amine mutually regenerates in a further preferred embodiment
Concentration be 88wt%-100wt%.
In another preferred embodiment, the concentration of the condensed matter before the condensed matter mutually regenerates is more than
In a more preferred embodiment, the concentration of condensed matter before the condensed matter mutually regenerates is 88wt%- to 50wt%.
100wt%.
Present invention also offers a kind of system for the admixture of gas depickling containing sour gas, the system bag
Include：
Absorptive unit, the absorptive unit be used for admixture of gas is in contact with absorbent, the absorbent comprising with
The amine of initial concentration dissolving in a solvent, the absorbent absorb sour gas and form rich gas absorbent, the rich gas absorbent
Concentration forms concentration amine phase, and the concentration amine mutually separates from the remainder of the absorbent concentrates amine mutually comprising dense described in
Concentration amine of the degree higher than initial concentration and absorbed sour gas, wherein concentration amine includes amine or its chemical modification (the
Amine having chemical modification), absorbed sour gas includes sour gas or its chemistry changes
Property thing (the acid gas having chemical modification)；
Upgrading unit, the upgrading unit are used to concentrate in the rich gas absorbent to form concentration amine phase；
Separative element, the separative element are used to mutually separate the concentration amine from the remainder of the absorbent；
With
Regeneration unit, the regeneration unit is used for the regeneration of the concentration amine phase, to obtain the sour gas and concentration
Amine.
Still further aspect, of the invention further relates to a kind of system for the admixture of gas depickling containing sour gas,
The system includes：
Absorptive unit, the absorptive unit are used to make admixture of gas be in contact with absorbent, and the absorbent contains molten
A kind of material of the solution in the solvent of initial concentration, the material are selected from the one or more of following composition：Amine, amino acid
Salt, acid amides, alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, carbonate, borate, acid phosphite, phosphorous
Hydrochlorate, phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate, metaborate, two boron
Hydrochlorate, tetraborate, pentaborate；
The absorbent absorbs sour gas and forms rich gas absorbent, and the rich gas absorbent concentrates to form condensed matter
Phase, the condensed matter mutually separate condensed matter described in mutually comprising concentration higher than initial from the remainder of the absorbent
The condensed matter of concentration and absorbed sour gas, wherein condensed matter include material or its chemical modification (the
Agent having chemical modification), absorbed sour gas includes sour gas or its chemistry changes
Property thing (the acid gas having chemical modification)；
Upgrading unit, the upgrading unit are used to concentrate to form condensed matter phase by the rich gas absorbent；
Separative element, the separative element are used to mutually separate condensed matter from residual absorption agent；And
Regeneration unit, the regeneration unit is used for the regeneration of material concentration phase, to obtain the sour gas and institute
State condensed matter.
In above-mentioned two system, the one kind of the solvent in including following material：Water, amine, amino acid, amino acid
Salt, acid amides, alcohol, ethylene glycol, mercaptan, phenol, alkane, unsaturated hydrocarbon, ether, ester, aldehyde, ketone, carboxylic acid, phosphonic acids, second two
Alcohol ether, alkylene carbonate, carbonic diester, sulfolane, ionic liquid, polymer, organic silicon solvent, organic fluorous solvent；Or bag
The organic solution of the aqueous solution containing one or more salt and/or alkali, one or more salt and/or alkali, the salt are selected from such as
Under group：Alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, alkanolamine, alkaline earth salt, phosphate, acid phosphorous
Hydrochlorate, phosphite, phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, carbonate, bicarbonate
Salt, borate, metaborate, biborate, tetraborate and pentaborate, and the derivative of the salt.
The beneficial effects of the invention are as follows：The method that concentrates again is absorbed after sour gas by sour gas from gas using absorbent
Separated in body mixture, the technique can increase the absorption rate for separating sour gas from admixture of gas, and reduce use
In the total energy consumption of depickling operation.
Only concentrating mutually needs to regenerate, and so as to reduce solvent circulation, reduces regeneration institute calorific requirement, reduces to circulating cooling
The demand of water, so as to substantially reduce the total energy consumption of whole deacidification.
Other aspects of the present invention, feature and advantage will pass through following detailed description of the present invention, preferable implementation
Scheme and appended claims are fully disclosed.
Brief description of the drawings
The above and described further below that the present invention may be better understood is read in conjunction with the figure.For illustrating this
The purpose of invention, picture shown for the preferred embodiments of the present invention.It should be understood, however, that the present invention is not limited in picture
Shown layout and means.
The flow chart for the step of Fig. 1 is the deacidifying process shown in foundation one embodiment of the invention.
Embodiment
Unless otherwise defined, it is related to the present invention, general with this area with all science and technology here and scientific terminology
Logical technical staff's has been generally understood that identical implication.Otherwise, the implication of some terms used herein has this specification institute
The implication of setting.All patents cited herein, disclosed patent application and publication have been incorporated by reference into text
In, as illustrate here comprehensively.It should be noted that unless context explicitly indicate that state otherwise it is outer, for herein
Singulative especially in appended claims includes plural reference.
On the one hand, the present invention relates to a kind of deacidifying process of effective admixture of gas, used more particularly, to one kind
The method that concentrates again separates sour gas from admixture of gas after absorbent absorbs sour gas, the technique can increase by
The absorption rate that sour gas separates from admixture of gas, and reduce the total energy consumption for depickling operation.
According to one embodiment of the invention, absorbent and the admixture of gas including the sour gas to be removed is one
Contacted in individual absorptive unit.The absorbent is included with a kind of initial concentration dissolving amine in a solvent or a kind of material.Inhaling
During receipts, either the material concentration turns into concentration amine phase or the concentration phase of the material to the amine in absorbent.Can also
After completion is absorbed, by the amine in absorbent, either the material is concentrated as the concentration of amine phase or the material is concentrated
Phase.The concentration of the concentration amine phase or the material is mutually separated from the remainder of absorbent.The initial concentration of the amine
For 0.001-99.9wt%, the initial concentration of the material is also 0.001-99.9wt%.Preferably, the initial concentration of amine is
1-90wt%.It is further preferred that the initial concentration of amine is preferably for 3-80wt%., the initial concentration of above-mentioned substance is 1-
90wt%.Do not have it is further preferred that the initial concentration of above-mentioned substance is 3-80wt%. to the material in absorbent or the concentration of amine
There are special requirement, it is different adjustable according to the content of sour gas.
The sour gas to be removed, for example, it may be one or more sour gas, the sour gas is selected from such as
Under group：Carbon dioxide (CO2), sulfur dioxide (SO2), sulfur trioxide (SO3), hydrogen sulfide (H2S), carbonyl sulfide (COS), two
Nitric sulfid (CS2), mercaptan (RSH), nitric oxide (NO), nitrogen dioxide (NO2), fluoride, hydrochloric acid, and combinations thereof.
According to the absorptive unit in embodiment of the present invention, can be absorption tower either membrane contactor or other
The solution-air osculating element that technical field technical staff knows.
Those skilled in the art of the present technique readily appreciate, and the absorbent may include that one or more are dissolved in a kind of solvent
Amine.The example of the amine includes but is not limited to MEA, diethanol amine, triethanolamine, monoethanolamine, isopropanolamine, sub- second
Base amine, alkyl-alkanolamine, methyl diethanolamine, piperidines, dibutyl amine, diisopropylamine, and its derivative or mixture.
The solvent can be aqueous solvent or organic solvent.For example, the aqueous solvent can be water, one or more salt
The aqueous solution, the aqueous solution of one or more alkali.The organic solvent can be organic solvent, one or more salt it is organic molten
Liquid, the organic solution of one or more alkali, the water of one or more salt and the mixed solution of organic solvent, one or more alkali
The mixed solution of water and organic solvent, the salt include but is not limited to alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate,
Alkanolamine, alkaline earth salt, phosphate, acid phosphite, phosphite, phosphonite, hypophosphites, phosphonate, acidity
Phosphate, pyrophosphite, carbonate, bicarbonate, borate, metaborate, biborate, tetraborate and five boric acid
Salt, and its derivative.The organic solvent may include one or more components, the component include but is not limited to amine, amino acid,
Amino-acid salt, acid amides, alcohol, ethylene glycol, mercaptan, phenol, alkane, unsaturated hydrocarbon, ether, ester, aldehyde, ketone, carboxylic acid, phosphine
Acid, glycol ether, alkylene carbonate, carbonic diester, sulfolane, ionic liquid, polymer, organic silicon solvent, organic fluorous solvent,
And its derivative.Further, the solvent can be a kind of aqueous solution and a kind of composition of organic solvent.
The amine also be can dissolve and/or be mixed in other one or more amine, other one or more material, for example,
Amino acid, amino-acid salt, acid amides, alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphate, carbonate, borate, acidity
Phosphite, phosphite, phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate,
Metaborate, biborate, tetraborate, pentaborate.
In a preferred embodiment, the solvent includes ethylene glycol, glycol ether, C5 to C12 alcohol, decamethyl
Tetrasiloxane (decamethyltetrasiloxane) or the siloxen of decamethyl four (decamethyltetrasiloxine)
More than two kinds of composition in the solution of water/organic solvent of the solution of water/organic solvent of alkali, carbonic acid and bicarbonate.
The solvent also can be the solvent for being insoluble or slightly soluble in water, such as alcohol not soluble in water, ethylene glycol, second two
Alcohol ether, organic silicon solvent or organic fluorous solvent.Further, the solvent can be ionic liquid or polymer.
The solvent also can be the aqueous solution of water, the aqueous solution of alkali, carbonic acid and bicarbonate.
In one embodiment of the invention, the absorbent includes the amine being dissolved in solvent, and the solvent includes
But it is not limited to alcohol, ethylene glycol, glycol ether, organic silicon solvent, organic fluorous solvent, monoethanolamine solution, diethanol amine, three ethanol
Amine, monoethanolamine, isopropanolamine, ethylene amines, alkyl-alkanolamine (alkyl alkanolamines), methyl diethanolamine,
Piperidines, dibutyl amine, diisopropylamine, mercaptan, phenol, carboxylic acid, water, the aqueous solution of alkali, the organic solution of alkali, carbonic acid and bicarbonate
The aqueous solution, the organic solution of carbonic acid and bicarbonate, its derivative or mixture.
In one embodiment of the invention, the amine can be substituted with other materials.For example, the amine substitute materials can be with
It is amino acid, amino-acid salt, acid amides, alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, carbonate, borate, acid
Property phosphite, phosphite, phosphorous acid derivative (phosphonite), hypophosphites, phosphonate, superphosphate, Jiao Ya
Phosphate, bicarbonate, metaborate, biborate, tetraborate, pentaborate, and its derivative or composition.It is described
Amine substitute materials are dissolvable in water in water or the aqueous solution of one or more salt, the organic solution of salt, the aqueous solution of alkali, alkali it is organic
In solution, including but not limited to alkali salt, ammonium salt, alkanolamine, alkaline earth salt, urea, alkali metal phosphate, acid phosphite,
Phosphite, phosphorous acid derivative (phosphonite), hypophosphites, phosphonate, superphosphate, pyrophosphite, carbonic acid
Salt, bicarbonate, borate, metaborate, biborate, tetraborate, pentaborate or its derivative.The amine substitutes
Material is also dissolvable in water the organic substance for including one or more components, and the component includes but is not limited to alcohol, ethylene glycol, alkane
Hydrocarbon, unsaturated hydrocarbon, ether, ester, aldehyde, ketone, glycol ether, alkylene carbonate, carbonic diester, sulfolane, and its it is derivative
Thing, for example, ionic liquid, polymer, organic silicon solvent, organic fluorous solvent.The amine substitute materials be also dissolvable in water it is a kind of or
A variety of amine, or other one or more amine substitute materials, such as amino acid, amino-acid salt, acid amides, alkali salt, alkaline earth salt, ammonium
Salt, urea, alkali metal phosphonate, carbonate, borate, acid phosphite, phosphite, phosphorous acid derivative
(phosphonite), hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate, metaborate, hypoboric acid
Salt, tetraborate, pentaborate.
In one embodiment of the invention, the absorbent includes the aqueous solution of carbonate or/and borate.
In another embodiment of the present invention, the absorbent includes the water-soluble of amine, carbonate or/and borate
Liquid, alkali the aqueous solution in.
In another embodiment of the present invention, the absorbent include amine, alcohol, carbonate or/and borate water/
In organic solution, water/organic solution of alkali.
In another embodiment of the present invention, the absorbent includes the one or more being dissolved in a kind of solvent
The mixture of amine and one or more amine substitutes.The solvent can be any one in for example foregoing solvent.
In the embodiment of the application, the absorbent includes amine aqueous solution, amine substitute or its mixture, institute
Category solution concentration is selected from the group being made up of following percentage：0.01%th, 0.1%, 1%, 5%, 10%, 15%, 20%, 25%,
30%th, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 90% etc..
According to embodiment of the present invention, when the sour gas contacts with absorbent, the sour gas is with physics
Method and/or chemical method are absorbed.After Physical Absorption, the sour gas is absorbed in absorbent, mainly with without changing
Modified state is learned to be present in concentration amine phase or concentration amine substitute phase.However, after chemical absorbing, the sour gas is inhaled
Close in absorbent, be mainly present in state after being chemically modified in concentration amine phase or concentration amine substitute materials phase, also
It is to say, is present in amine or the amine substitute and the reacted reactant of sour gas.
In one embodiment of the invention, amine or the amine substitute and the reacted reaction product base of sour gas
Do not dissolved in sheet in the solvent.
In another embodiment of the present invention, amine or the amine substitute and the reacted reaction product of sour gas
It is dissolved in the solvent.
When using amine in the absorbent, the concentration amine mutually includes amine of the concentration higher than initial concentration and absorbed
Sour gas, the concentration amine can be amine or chemically modified amine, such as by the chemistry between amine and sour gas
Caused reaction product after reaction.The concentration amine can mutually exist with a single-phase form, for example, a kind of amine aqueous solution.It is described dense
Contracting amine mutually can also include multiphase.The absorbed sour gas is accumulated in the concentration amine phase.
Similarly, when using amine substitute in the absorbent, the concentration amine substitute is mutually higher than comprising concentration
The concentration amine substitute and absorbed sour gas of initial concentration, it is described concentration amine substitute can be the substitute or its
Chemical modification, for example, reaction product caused by a kind of chemical reaction as between the substitute and sour gas.The quilt
The sour gas of absorption includes sour gas or its chemical modification, for example, one kind is by between the substitute and sour gas
Chemical reaction caused by reaction product.The concentration amine substitute can mutually exist with a single-phase form, for example, a kind of dense
Contracting amine substitute solution.The concentration amine substitute mutually can also include multiphase.The absorbed sour gas accumulates in described
Concentrate in amine substitute phase.
After the absorbent absorbs sour gas, as sour gas is removed or is significantly reduced, purified gas
Body mixture is discharged from absorptive unit.The purified admixture of gas being discharged can be received according to the purpose of user
Collection or processing.
After absorbent absorbs sour gas, the material in the absorptive unit is transported to upgrading unit.Then divide
From unit, in separative element, concentration amine phase or concentration amine substitute are mutually separated from the remainder of absorbent.The concentration
Amine phase or concentrate amine substitute phase forming process can before the material in the absorptive unit is transported to upgrading unit,
Among or afterwards.
In another embodiment of the present invention, it is mutually formed completely in the concentration amine phase or concentration amine substitute
Afterwards, described material is just transported to separative element.
In one embodiment of the invention, before the concentration amine phase or concentration amine substitute are mutually formed completely,
Described material is transported to separative element.
In view of existing disclosure, concentration technique known to those skilled in the art of the present technique's use and phase detachment technique can be achieved
The concentration and separation.For example, phase conversion method (Phase Transitional Method), phase transformation can be used in method for concentration
Change method (Phase Change Method), method of evaporating, gasification process, method for crystallising, membrane separating method, pervaporation, extraction
Take, filter method, method for concentration also includes passing through temperature change, pressure change, change in concentration, carrying caused by changes in solubility
Dense process, and any equipment of concentration can be provided.
For isolation technics, for example, the concentration based on phase, by knock-out drum, you can concentration amine is separated.Also can be based on
Other characteristics of phase, such as by using the film different with the remainder permeability of absorbent to concentration amine phase, you can will be dense
Contracting amine is separated.Further, the Vltrasonic device that the concentration amine can be mutually combined by aid dispersion is separated.
The separating step of the present invention can by using it is one or more it is well known in the art, separated suitable for batch liquid phase thing
Phase settler or phase-separating device complete.Some examples include simple settler, filter, whizzer, membrane filtration
Device, ultrasonic device etc..
After releasing, the remainder of the absorbent mainly includes solvent.The remainder of the absorbent also wraps
Amine or amine substitute containing concentration well below initial concentration.The remainder of the absorbent may also contain on a small quantity
Absorbed sour gas.After releasing, the remainder of the absorbent is recycled to absorptive unit to reuse.
Separated concentration amine phase or concentration amine substitute are mutually sent to regeneration unit, described in the regeneration unit
Concentration amine mutually produces or regenerated amine and sour gas through processing.Use for reference embodiment disclosed by the invention, the art
Technical staff can use known renovation process to realize the regeneration technology.Typical renovation process includes but is not limited to heat point
Solution, air- extraction, vaporizing extract process, vacuum method, the way of distillation, handled by membrane contactor (membrane contractor), oozed
Saturating gasification, pressure differential method, microwave method, and the combination of above method.It is to be understood that in view of existing disclosure, the art skill
Art personnel can also use other renovation process in regeneration technology.
The sour gas of the regeneration is collected or handled according to the purpose of user.The amine or amine of the regeneration
Substitute materials are recyclable to be recycled to absorptive unit to reuse.
On the other hand, the present invention relates to a kind of system for the admixture of gas depickling containing sour gas.The system
System includes absorptive unit, upgrading unit, separative element and regeneration unit as described above.
According to embodiment of the present invention, the deacidifying process can be used for removing unpurified acidity from admixture of gas
Gas, in the deacidifying process, the sour gas can be handled more effectively.On the other hand, the reality according to the present invention
Scheme is applied, the deacidifying process can be also used for more effectively collecting sour gas interested from admixture of gas.
In one embodiment of the invention, the solvent in absorbent has the absorption rate for improving the sour gas
Effect.The sour gas is inhaled into the ratio of absorbent higher than the speed that it is directly absorbed by amine.
In one aspect of the invention, the reason for energy consumption for regeneration technology is reduced is：Only partially absorb agent
(the concentration amine phase) needs to regenerate, and the remainder of the absorbent can rapidly cycle back in absorptive unit and repeat to make
With.
Fig. 1 illustrates the particular of the present invention, and a kind of gas containing the sour gas to be removed is mixed
Compound 1 and a kind of absorbent 3 are positioned in absorptive unit 10.In the absorptive unit 10, the admixture of gas 1 and absorption
Agent 3 contacts with each other.In the absorptive unit 10, after the sour gas is absorbed by absorbent 3, purified gas mixing
Thing 2 is discharged out the absorptive unit 10.Rich gas absorbent 5 is admitted to upgrading unit 20, and upgrading unit 20 is used to inhale rich gas
Receive agent to concentrate to form concentration amine phase, subsequently into separative element 30.Separative element 30 is used to divide from the remainder 4 of absorbent
From concentration amine phase 6.After releasing, the remainder 4 of the absorbent includes wholly or largely component in solvent, a small amount of
Do not include amine, a small amount of or do not include absorbed sour gas either, with or without further handling, be recycled to
Absorptive unit 10 is with reuse.Separated concentration amine phase 6 comprising it is most or all of, by or without chemical modification
Amine and absorbed sour gas, perhaps also one or more solvents component, for regeneration treatment.
Referring to Fig. 1, the separated concentration amine phase 6 is sent to regeneration unit 40, described in the regeneration unit 40
Concentration amine phase 6 is reproduced, and absorbed sour gas 12 is isolated from concentration amine phase, and the concentration amine of remainder is mutually lean gas
Phase 14.After the absorbed sour gas 12 is further processed, it can be handled or received according to the purpose of user
Collection.The poor gas phase 14 includes the component of the amine, perhaps also one or more solvents of regeneration, with or without further place
Reason, it is recycled to absorptive unit 10 to reuse.
According to other embodiments of the present invention, absorptive unit 10 and upgrading unit 20 can turn into a unit,
According to other embodiments of the present invention, upgrading unit 20 and separative element 30 can turn into a unit,
As shown in figure 1, the remainder 4 of the absorbent from separative element 30 and the poor gas phase 14 from regeneration unit 40
Mixed in blender 50.Then, the absorbent 3 of generation is cycled back into absorptive unit 10 to reuse.According to the present invention
Other embodiments, the remainder 4 and poor gas phase 14 of the absorbent need not can together be mixed, can circulated respectively first
Absorptive unit 10 is back to reuse.
Although not showing in Fig. 1, in view of existing disclosure, in addition to the component through circulation and stress of the absorbent 3, ability
Field technique personnel can add the component of extra one or more absorbents 3, be damaged with compensation during deacidifying process
One or more components of mistake.
According to embodiment of the present invention, the exhaust passage (stack) in existing power plant or other kinds of equipment can quilts
Transform or change into absorptive unit.According to embodiment of the present invention, the exhaust passage (stack) can also be transformed into or turn
Chemical conversion includes the single tower of absorptive unit, separative element and regeneration unit.
Following examples are used to illustrate the present invention, but are in no way intended to limit the use range of the present invention.
Embodiment 1
The absorbent by volume ratio 20% amine (monoethanolamine is Monoethanolamine (MEA)) and volume ratio
80% water composition.At 25~45 DEG C, under the conditions of 1atm, in packed absorber, by absorbent and include sour gas (two
Carbonoxide) admixture of gas contact.Absorbent absorbs sour gas and forms rich gas (carbon dioxide) absorbent, uses UF membrane
Method, the rich gas absorbent flowed out out of packed tower is concentrated to form concentration amine phase in the concentration amine phase, whole MEA (bags
Include not chemically modified MEA and MEA and CO2Reaction product) concentration be about volume ratio 80%, water 20%.Will
Concentration amine mutually separates from the remainder of absorbent.After separation, the remainder of the absorbent include most of water,
Also small part MEA and absorbed CO2,
By the separated concentration amine phase transfer to regenerator, and by heating the method for the concentration amine phase to described
Concentration amine is mutually handled to obtain the MEA and CO of regeneration2.The MEA of regeneration is mixed with the remainder of absorbent.By described in
Mixture is cycled back in packed absorber to complete circulation.
Embodiment 2
The present embodiment displaying absorbs CO by carbonate aqueous solution2。
A kind of absorbent being made up of carbonate aqueous solution.At 50 DEG C, under the conditions of 1atm, in packed absorber, by institute
State absorbent and contacted with including the admixture of gas of sour gas (carbon dioxide).Absorbent absorbs sour gas and forms rich gas
(carbon dioxide) absorbent, using membrane separating method, the rich gas absorbent flowed out out of packed tower is concentrated to form concentration carbonic acid
Salt phase is in the concentration carbonate facics, whole carbonate (including not chemically modified carbonate and carbonate and CO2
Reaction product, bicarbonate).Concentration carbonate facics is separated from the remainder of absorbent.After separation, the absorption
The remainder of agent includes most of water, also has small part carbonate and bicarbonate.
The separated concentration carbonate facics is transferred to regenerator, and by heating the side of the concentration carbonate facics
Method is handled to obtain the carbonate and CO of regeneration the concentration carbonate facics2.By the carbonate of regeneration and absorbent
Remainder mixes.The mixture is cycled back in packed absorber to complete circulation.
Embodiment 3
The absorbent by volume ratio 30% amine (monoethanolamine is MEA+ piperazines (a small amount of)) and volume ratio 70% is molten
Agent (isooctanol) forms.At 25~45 DEG C, under the conditions of 1atm, in stirring absorptive unit (stirring cell absorption
Unit in), absorbent is contacted with including the admixture of gas of sour gas (carbon dioxide).Monoethanolamine in absorbent
(MEA) spontaneous to be condensed into concentration amine phase, the concentration amine mutually includes MEA and MEA and CO2Reaction product.
After absorption, by absorbent described in gravitational settling, concentration amine is mutually separated from the remainder of absorbent.
After separation, the remainder of the absorbent includes most of isooctanol, perhaps also has part MEA and absorbed CO2,
Receipts are recycled to absorptive unit to reuse.In the concentration amine phase, whole MEA (including not chemically modified MEA
And MEA and CO2Reaction product) concentration be about volume ratio 60-70%.
By the separated concentration amine phase transfer to regenerator, and by heating the method for the concentration amine phase to described
Concentration amine is mutually handled to obtain the MEA and CO of regeneration2.The MEA of regeneration is mixed with the remainder of absorbent.By described in
Mixture circulation and stress extremely stirs absorptive unit to complete to circulate.
Collect the CO of regeneration technology flow release2。
Embodiment 4
The absorbent by volume ratio 30% amine (include the piperazine of 98% monoethanolamine 1%, 0.1% potassium carbonate,
0.9% water) and volume ratio 70% solvent (isooctanol) composition.At 25~45 DEG C, under the conditions of 1atm, in stirring absorptive unit
In (stirring cell absorption unit), absorbent is mixed with including the gas of sour gas (carbon dioxide)
Compound contacts.Spontaneous be condensed into of monoethanolamine (MEA) in absorbent concentrates amine phase, and the main component of the concentration amine phase includes
MEA, MEA and CO2Reaction product, and other compositions.
After absorption, by absorbent described in gravitational settling, concentration amine is mutually separated from the remainder of absorbent.
After separation, the remainder of the absorbent includes most of isooctanol, perhaps also has part MEA and absorbed CO2,
Receipts are recycled to absorptive unit to reuse.In the concentration amine phase, composition is mainly MEA, piperazine and potassium carbonate (bag
Include not chemically modified MEA, piperazine and potassium carbonate and MEA, piperazine, potassium carbonate, and CO2Reaction product).
By the separated concentration amine phase transfer to regenerator, and by heating the method for the concentration amine phase to described
Concentration amine is mutually handled to obtain the MEA of regeneration, piperazine, potassium carbonate and CO2.By the MEA of regeneration and the remainder of absorbent
Divide mixing.The mixture circulation and stress is extremely stirred to absorptive unit to complete to circulate.
Collect the CO of regeneration technology flow release2。
It is to be appreciated that in the case of without departing from theory scope of the present invention, those skilled in the art can be to the above
The embodiment of description makes change.Thus, it is to be understood that the present invention is not limited to disclosed particular, and
It is intended to cover in the variants and modifications defined in appended claim within the spirit and scope of the invention.
Claims (16)
- A kind of 1. method for the admixture of gas depickling containing sour gas, it is characterised in that methods described includes：A, acid gas mixture is contacted with the absorbent in absorptive unit, the absorbent be dissolved in initial concentration it is molten A kind of material in agent, one or more of the material in following composition：Amine, amino-acid salt, acid amides, alkali, alkali Salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, carbonate, borate, acid phosphite, phosphite, Phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate, metaborate, biborate, Tetraborate, pentaborate；B, make the absorbent absorb sour gas and form rich gas absorbent；C, the rich gas absorbent is made to concentrate to form condensed matter phase；D, the condensed matter is made mutually to be separated from the remainder of the absorbent；The condensed matter is mutually higher than comprising concentration The condensed matter of initial concentration and absorbed sour gas, wherein condensed matter include material or its chemical modification (the Agent having chemical modification), absorbed sour gas includes sour gas or its chemistry changes Property thing (the acid gas having chemical modification)；E, the remainder of the absorbent is cycled back into absorptive unit；F, the condensed matter is mutually delivered into regeneration unit, to obtain sour gas and the condensed matter；Also,G, the condensed matter by regeneration is cycled back into absorptive unit.
- 2. the method according to claim 1 for the admixture of gas depickling containing sour gas, it is characterised in that institute The method of stating includes：A, acid gas mixture is contacted with the absorbent in absorptive unit, the absorbent be dissolved in initial concentration it is molten Amine in agent；The initial concentration of the amine is 0.001-99.9wt%；B, make the absorbent absorb sour gas and form rich gas absorbent；C, rich gas absorbent is made to concentrate to form concentration amine phase；D, the concentration amine is made mutually to be separated from the remainder of the absorbent；The concentration amine is mutually comprising concentration higher than initial The concentration amine and absorbed sour gas of concentration, wherein concentration amine includes amine or its chemical modification (the amine Having chemical modification), absorbed sour gas includes sour gas or its chemical modification (the acid gas having chemical modification)；E, the remainder of the absorbent is cycled back into absorptive unit；F, the concentration amine is mutually delivered into regeneration unit, to obtain sour gas and the concentration amine；Also,G, the concentration amine by regeneration is cycled back into absorptive unit.
- 3. the method according to claim 1 or 2 for the admixture of gas depickling containing sour gas, its feature exists In one or more of the sour gas in following gaseous matter：Carbon dioxide (CO2), sulfur dioxide (SO2)、 Sulfur trioxide (SO3), hydrogen sulfide (H2S), carbonyl sulfide (COS), carbon disulfide (CS2), mercaptan (RSH), nitric oxide (NO), Nitrogen dioxide (NO2), fluoride, hydrochloric acid.
- 4. the method according to claim 1 or 2 for the admixture of gas depickling containing sour gas, its feature exists In the amine is selected from the one or more of following material：Organic amine, MEA, diethanol amine, triethanolamine, ethanol Amine, isopropanolamine, ethylene amines, alkyl-alkanolamine, methyl diethanolamine, piperidines, dibutyl amine, diisopropylamine；The solvent is selected from one kind of following component：Water, amine, amino acid, amino-acid salt, acid amides, alcohol, ethylene glycol, mercaptan, benzene Phenol, alkane, unsaturated hydrocarbon, ether, ester, aldehyde, ketone, carboxylic acid, phosphonic acids, glycol ether, alkylene carbonate, carbonic diester, Sulfolane, ionic liquid, polymer, organic silicon solvent, organic fluorous solvent；Or comprising one or more salt and/or alkali The organic solution of the aqueous solution, one or more salt and/or alkali, the salt are selected from following group：Alkali, alkali salt, alkaline earth salt, ammonium Salt, urea, alkali metal phosphonate, alkanolamine, alkaline earth salt, phosphate, acid phosphite, phosphite, Phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, carbonate, bicarbonate, borate, inclined boron Hydrochlorate, biborate, tetraborate and pentaborate, and the derivative of the various salt.
- 5. the method according to claim 4 for the admixture of gas depickling containing sour gas, it is characterised in that institute State one or more of the amine in including following material：MEA, diethanol amine, piperidines, dibutyl amine, or diisopropyl Amine, triethanolamine, monoethanolamine, isopropanolamine, ethylene amines, alkyl-alkanolamine and methyl diethanolamine；The solvent includes At least one of following material：Water, alcohol, ethylene glycol, glycol ether, decamethyl tetrasiloxane and the siloxen of decamethyl four, Gallic acid, PZ, benzoquinones, carbohydrazide, piperazine, one or more salt and/or alkali it is water-soluble Liquid, the organic solution of one or more salt and/or alkali, the alkali and salt include sodium hydroxide, potassium hydroxide, lithium hydroxide, Potassium carbonate, sodium carbonate, sodium acid carbonate, saleratus.
- 6. the method according to claim 1 for the admixture of gas depickling containing sour gas, it is characterised in that institute Step a absorption is stated, step c concentration and step d separation can occur non-concurrent to occur simultaneously.
- 7. the method for the admixture of gas depickling containing sour gas according to claim 1 or 6, its feature exist In the absorption of the step a, step c concentration and step d separation can occur in same unit, can also be in difference Occur in unit.
- 8. method according to claim 1 or 2, it is characterised in that the method for concentration includes phase conversion method (Phase Transitional Method), phase change method (Phase Change Method), method of evaporating, gasification process, crystallization side Method, membrane separating method, pervaporation, extraction, filter method, method for concentration also include passing through temperature change, pressure change, concentration Change, the concentrate process caused by changes in solubility, and any equipment of concentration can be provided.
- 9. the method according to claim 1 or 2 for the admixture of gas depickling containing sour gas, its feature exists In the absorptive unit is an absorber, a membrane contactor and any equipment that can provide air-liquid contact.
- 10. the method according to claim 1 or 2 for the admixture of gas depickling containing sour gas, its feature exists In, including a kind of renovation process, the renovation process is selected from the group formed by the following method：Thermal decomposition method, air- extraction, stripping Method, vacuum method, the way of distillation, handled by membrane contactor, pervaporation method, pressure differential method, microwave method, including become by temperature Change, pressure change, reach regeneration method, and the combination of above method.
- 11. the method according to claim 10 for the admixture of gas depickling containing sour gas, it is characterised in that The renovation process is selected from the combination of thermal decomposition method, air- extraction, vaporizing extract process, vacuum method, the way of distillation and above method.
- 12. the method according to claim 2 for the admixture of gas depickling containing sour gas, it is characterised in that The concentration for concentrating the concentration amine before amine mutually regenerates is more than 50wt%；The concentration of condensed matter before the condensed matter mutually regenerates is more than 50wt%.
- 13. the method according to claim 2 for the admixture of gas depickling containing sour gas, it is characterised in that The concentration for concentrating the concentration amine before amine mutually regenerates is 88wt%-100wt%；The concentration of condensed matter before the condensed matter mutually regenerates is 88wt%-100wt%.
- 14. a kind of system for the admixture of gas depickling containing sour gas, it is characterised in that the system includes：Absorptive unit, the absorptive unit are used to make admixture of gas be in contact with absorbent, and the absorbent is included with initial The amine of concentration dissolving in a solvent, the absorbent absorb sour gas and form rich gas absorbent, the rich gas absorbent concentration Concentration amine phase is formed, the concentration amine mutually separates from the remainder of the absorbent；The concentration amine is mutually high comprising concentration Concentration amine and absorbed sour gas in initial concentration, wherein concentration amine includes amine or its chemical modification (the Amine having chemical modification), absorbed sour gas includes sour gas or its chemistry changes Property thing (the acid gas having chemical modification)；Upgrading unit, the upgrading unit are used to concentrate in the rich gas absorbent to form concentration amine phase；Separative element, the separative element are used to mutually separate the concentration amine from the remainder of the absorbent；WithRegeneration unit, the regeneration unit are used for the regeneration of the concentration amine phase, to obtain the sour gas and concentration amine.
- 15. a kind of system for the admixture of gas depickling containing sour gas, it is characterised in that the system includes：Absorptive unit, the absorptive unit are used to make admixture of gas be in contact with absorbent, and the absorbent, which contains, to be dissolved in A kind of material in the solvent of initial concentration, the material are selected from the one or more of following composition：Amine, amino-acid salt, Acid amides, alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, carbonate, borate, acid phosphite, phosphorous acid Salt, phosphonite, hypophosphites, phosphonate, superphosphate, pyrophosphite, bicarbonate, metaborate, hypoboric acid Salt, tetraborate, pentaborate, and combinations thereof；The absorbent absorbs sour gas and forms rich gas absorbent, and the rich gas absorbent concentrates to form condensed matter phase, institute State condensed matter and condensed matter described in is mutually separated from the remainder of the absorbent mutually comprising concentration higher than initial concentration Condensed matter and absorbed sour gas, wherein condensed matter include material or its chemical modification (the agent Having chemical modification), absorbed sour gas includes sour gas or its chemical modification (the acid gas having chemical modification)；Upgrading unit, the upgrading unit are used to concentrate to form condensed matter phase by the rich gas absorbent；Separative element, the separative element are used to mutually separate condensed matter from residual absorption agent；AndRegeneration unit, the regeneration unit are used for the regeneration of material concentration phase, to obtain the sour gas and described dense Contracting material.
- 16. the system according to claims 14 or 15, it is characterised in that the solvent in including following material one Kind：Water, amine, amino acid, amino-acid salt, acid amides, alcohol, ethylene glycol, mercaptan, phenol, alkane, unsaturated hydrocarbon, ether, Ester, aldehyde, ketone, carboxylic acid, phosphonic acids, glycol ether, alkylene carbonate, carbonic diester, sulfolane, ionic liquid, polymer, organosilicon Solvent, organic fluorous solvent；Or the aqueous solution comprising one or more salt and/or alkali, one or more salt and/or alkali Organic solution, the salt are selected from following group：Alkali, alkali salt, alkaline earth salt, ammonium salt, urea, alkali metal phosphonate, alkanolamine, alkali Earth salt, phosphate, acid phosphite, phosphite, phosphonite, hypophosphites, phosphonate, superphosphate, Jiao Ya Phosphate, carbonate, bicarbonate, borate, metaborate, biborate, tetraborate and pentaborate, and the salt Derivative.
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| CN110052119A (en) * | 2019-03-26 | 2019-07-26 | 昆明理工大学 | Organic solvent absorbs hydrogen sulfide and the method for the utilization of resources in concentrate commercial acid gas |
| CN110448995A (en) * | 2019-08-19 | 2019-11-15 | 福建中融科技有限公司 | Liquefied air purification methanol deodorant and its preparation and application |
| CN111004138A (en) * | 2019-12-12 | 2020-04-14 | 南京恒道医药科技有限公司 | Green production method and device of levetiracetam key intermediate S-2-methyl aminobutyric acid |
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