CN106000009B - A kind of double-tower type MEDA handles landfill gas system - Google Patents
A kind of double-tower type MEDA handles landfill gas system Download PDFInfo
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- CN106000009B CN106000009B CN201610571782.3A CN201610571782A CN106000009B CN 106000009 B CN106000009 B CN 106000009B CN 201610571782 A CN201610571782 A CN 201610571782A CN 106000009 B CN106000009 B CN 106000009B
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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
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
-
- 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
-
- 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
- B01D2252/60—Additives
- B01D2252/602—Activators, promoting agents, catalytic agents or enzymes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
A kind of double-tower type MEDA processing landfill gas system belongs to environmental project protection and gas purification processes technical field more particularly to a kind of double-tower type MEDA processing landfill gas systems.The present invention provides a kind of CO that can be effectively treated in landfill gas2And H2The double-tower type MEDA processing landfill gas systems therein for endangering gas such as S.The present invention includes raw material gas tank, unstripped gas booster pump, absorption tower, bushing type microreactor, activator piperazine entrance, gas-liquid separator, hydraulic turbine, circulating pump, flash vessel, poor rich liquid heat exchanger, semi lean solution heat exchanger, regenerator, reboiler, cooling water tank, heat pump, separator, sour water reflux pump, acid gas recycling bins, semi lean solution aftercooler, lean solution aftercooler, MDEA circulating pumps, sink reflux pump, water washing groove, processing gas collecting box, and structural feature bushing type microreactor is arranged in absorption tower in the cavity of side.
Description
Technical field
At environmental project protection and gas purification processes technical field more particularly to a kind of double-tower type MEDA
Manage landfill gas system.
Background technology
Solvent absorption traps CO2And H2S is the method being most widely used at present, with methyl diethanolamine（MDEA）For
Absorbing liquid, addition activator piperazine can effectively improve its absorbability in MDEA.MEDA compares other regeneration of absorption solution
Easily, low energy consumption, MEDA vapour pressures bottom, absorbs acid gas solvent loss less, solvent is to CO2And H2S load capacity is big, degree of purification
Height is a kind of acid gas removal agent of the high-efficiency low energy consumption of chemical method purification.But for single absorption CO2Or H2S,
The removal efficiency of MDEA can be very high, especially to CO2More than 95% can be reached.
So problem is just in MDEA and H2S、CO2Response difference have differences, cause MDEA solution absorb H2S and CO2's
Rate is different, so that MDEA can contain H2S and CO2System in selective absorbing H2S.Therefore, make great efforts to improve to accelerate
CO2Rate be so that MDEA solution absorbs CO simultaneously2And H2S is crucial.
Invention content
The present invention addresses the above problem, provides a kind of CO that can be effectively treated in landfill gas2And H2S etc. is wherein
Endanger gas double-tower type MEDA processing landfill gas system.
To achieve the above object, the present invention adopts the following technical scheme that, the present invention includes raw material gas tank, unstripped gas is pressurized
It is pump, absorption tower, bushing type microreactor, activator piperazine entrance, gas-liquid separator, hydraulic turbine, circulating pump, flash vessel, poor
Rich solution heat exchanger, semi lean solution heat exchanger, regenerator, reboiler, cooling water tank, heat pump, separator, sour water reflux pump, acid gas return
Case, semi lean solution aftercooler, lean solution aftercooler, MDEA circulating pumps, sink reflux pump, water washing groove, processing gas collecting box are received,
Structural feature bushing type microreactor is arranged in absorption tower in the cavity of side, and activator piperazine entrance declines with casing to react
The connection of device outboard chambers is arranged on cavity lower part, and the lower end import of bushing type microreactor passes through unstripped gas booster pump and raw material gas tank
It is connected.
Cavity upper end above bushing type microreactor upper end outlet is provided with vertical exit, vertical exit in absorption tower
The gas-liquid separator entrance of upper end is connected, and gas-liquid separator upper end gas vent is connected with water washing groove, the gas of water washing groove
Outlet is connected with processing gas collecting box, the liquid outlet of water washing groove by the middle part of sink reflux pump and vertical regenerator into
Mouth is connected；Gas-liquid separator is provided with downward liquid outlet far from cavity side lower end, liquid outlet in the outer absorption tower of cavity
Space connects, the lateral rich solution outlet that absorption tower lower end is provided with space connects in absorption tower outside cavity, rich solution outlet and liquid
The import of power turbine is connected, the outlet of hydraulic turbine by flash vessel respectively with poor rich liquid heat exchanger, semi lean solution heat exchanger the
One heat exchanger channels entrance is connected, poor rich liquid heat exchanger, the first heat exchanger channels outlet of semi lean solution heat exchanger and the rich solution of reboiler
Import is connected.
The drive output of hydraulic turbine is connected with the driving input terminal of circulating pump, and the outlet of circulating pump declines with casing
The semi lean solution import that the connection of reactor outboard chambers is arranged on cavity lower part is connected, and the import of circulating pump passes through semi lean solution aftercooler
It is connected with the second heat exchanger channels outlet of semi lean solution heat exchanger, in the second heat exchanger channels entrance and regenerator of semi lean solution heat exchanger
Portion semi lean solution outlet is connected.
Second heat exchanger channels entrance of poor rich liquid heat exchanger is connected with the outlet of regenerator lower end lean solution, poor rich liquid heat exchanger
The outlet of second heat exchanger channels passes sequentially through lean solution aftercooler, MDEA circulating pumps and sets with being connected with bushing type microreactor outboard chambers
The lean solution import on cavity top is put to be connected.
The gas vent of reboiler is connected with the gas access of regenerator lower part, the semi lean solution outlet of reboiler and regenerator
The liquid inlet of lower part is connected；Regenerator lower end semi lean solution outlet respectively with the semi lean solution entrance of reboiler, heat pump semi lean solution
Heating gate is connected.
The condensation-water drain of reboiler is connected with the condensing water inlet of cooling water tank, condensation-water drain and the heat of cooling water tank
The heat exchanging liquid import of pump is connected, and the heat exchanging liquid outlet of heat pump is connected with condensing water inlet after the heat exchange of cooling water tank；Heat pump
The sour moisture outlet of heat of recuperated gas entrance and regenerator upper end be connected, outlet and the entrance of separator after the heat exchange of heat pump
It is connected, the acid gas outlet of separator is connected with acid gas recycling bins, and the sour water outlet of separator passes through sour water reflux pump and regenerator
The sour water refluxing opening of upper end is connected.
As a preferred embodiment, the second heat exchanger channels of semi lean solution aftercooler of the present invention and semi lean solution heat exchanger go out
Valve is provided between mouthful.
As another preferred embodiment, under the second heat exchanger channels entrance and regenerator of poor rich liquid heat exchanger of the present invention
End is provided with valve between lean solution outlet.
Secondly, it is provided with valve between MDEA circulating pumps of the present invention and lean solution import.
In addition, flashed vapour outlet in flash vessel top of the present invention is connected with regenerator or acid gas recycling bins.
Advantageous effect of the present invention.
The present invention, which is added to hydraulic turbine installation, the fluid pressure of rich solution to be utilized to be converted into the mechanical energy of circulating pump.Add
The thermal energy of heat pump reclaiming tower acid water has been added to provide reboiler heating unit.It is added to bushing type microreactor and coordinates CO2With
H2The absorption of S so that the maximization of absorption efficiency.The characteristics of maximum, can flow back into absorption tower using semi lean solution, and reduction is boiled again
Device part reheats.The sink washing for being finally added to absorption tower moisture further absorbs the pernicious gas that can be dissolved in water.
The flow path device can accomplish that almost without pollution, the energy maximumlly re-uses, and can accomplish CO simultaneously2And H2S is maximum
Change the advantages that coordinating to absorb.
It is generally acknowledged that MEDA removals CO2Efficiency be up to more than 95%, if handling H simultaneously2S then removes H2The efficiency meeting of S
It is very low.This is because different, MEDA and the CO of rate during reaction2During reaction it is partially slow and and H2S is then fast.So using one
Kind bushing type microreactor and activator piperazine can be expedited MEDA and CO2Reaction allows itself and H2The reaction of S reaches synchronous.
Mechanical energy is supplied to circulating pump using the pressure of hydraulic turbine and heat pump withdrawal liquid in terms of energy recovery and heat pump recycles sour water
The semi lean solution that boils again of thermal energy supply.And be additionally arranged again it is rich or poor/half poor rich liquid heat exchanger can exchange heat with MDEA rich solutions
Recycle thermal energy.Refrigerator is respectively half poor/lean solution aftercooler after setting two.It rapidly reduces remaining after poor/semi lean solution heat exchange
Temperature ensure that the condition for reaching absorption tower internal-response.Prevent the temperature inside regenerator from turning poor influence to MDEA.Using again
Device is boiled, the semi lean solution for regenerating tower bottom enters reboiler, then semi lean solution after boiling and reboiler upper steam return regeneration again
Tower.Condensation water caused by reboiler can be delivered directly to cooling water tank, can make full use of and save in this way water resource.
It is generally acknowledged that condensation water is that comparison is totally and clean.Sour water gas is come out on the top of regenerator to use after heat pump
Separator carries out gas-liquid separation, and sour water enters regenerator by the recycling of sour water reflux pump, and acid gas is recycled with acid gas recycling bins.
In the purified gas that absorption tower comes out by water washing groove, H2S is dissolved in water and CO2Being slightly soluble in water can be harmful what is do not absorbed in time
Gas retrieves washing, and can directly connect regenerator after washing is further processed.It is most of using pump in this process
Conveying carries out gas purification step by step and handles.
A bushing type microreactor is added in the present invention and addition activator piperazine accelerates MDEA and CO2Reaction, this
Sample can meet MDEA and H2S and CO2Coordination absorb.Also traditional double-tower type processing landfill gas is uneconomic, such as from
Therefore the rich solution that absorption tower comes out through being overpressurized, in order not to waste of energy in view of withdrawal liquid pressure is added to fluid power saturating
Leveling device recycling can give cycle pump energy supply to be recycled into absorption tower for semi lean solution.Semi lean solution and lean solution are added in this technique
Two cooling lines enter absorption tower, and it is energy saving that reduction semi lean solution boils process through reboiler again again.
The heat exchange of the thermal energy of cooling water and acid gas again connects the thermal energy after heat exchange using heat pump in the thermal energy for recycling acid gas
Reboiler supply semi lean solution boils again.The condensation water of acid gas is discharged by separator acid gas after heat pump and is collected, sour water reflux
Into regenerator.In order to which absorption tower cannot efficiently absorb CO2And H2S allows wet purification gas to be washed by water washing groove,
Cleaning solution returns regenerator by CO after washing2And H2S is precipitated.Whole device technique absorbs CO to accelerate absorption tower2With efficient profit
Based on hydraulic pressure thermal energy, the cost of purification technique can be substantially reduced.Crucial whole technique will not generate secondary pollution, protect ring
Border removes CO2And H2The advantages that efficiency of S.
Description of the drawings
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 is schematic structural view of the invention.
In figure, 1 it is raw material gas tank, 2 is unstripped gas booster pump, 3 is absorption tower, 4 is bushing type microreactor, 5 is activation
Agent piperazine entrance, 6 be gas-liquid separator, 7 be hydraulic turbine, 8 be circulating pump, 9 be flash vessel, 10 be poor rich liquid heat exchanger, 11
For semi lean solution heat exchanger, 12 be regenerator, 13 be reboiler, 14 be cooling water tank, 15 be heat pump, 16 be separator, 17 be acid
Water reflux pump, 18 be acid gas recycling bins, 19 be cold air after semi lean solution, 20 be lean solution aftercooler, 21 be MDEA circulating pumps, 22 to wash
Wash slot reflux pump, 23 be water washing groove, 24 be processing gas collecting box.
Specific embodiment
As shown in the figure, the present invention includes raw material gas tank（1）, unstripped gas booster pump（2）, absorption tower（3）, casing declines reaction
Device（4）, activator piperazine entrance（5）, gas-liquid separator（6）, hydraulic turbine（7）, circulating pump（8）, flash vessel（9）, rich or poor liquid
Heat exchanger（10）, semi lean solution heat exchanger（11）, regenerator（12）, reboiler（13）, cooling water tank（14）, heat pump（15）, separation
Device（16）, sour water reflux pump（17）, acid gas recycling bins（18）, semi lean solution aftercooler（19）, lean solution aftercooler（20）, MDEA cycle
Pump（21）, sink reflux pump（22）, water washing groove（23）, processing gas collecting box（24）, bushing type microreactor（4）It is arranged on
Absorption tower（3）In the cavity of interior side, activator piperazine entrance（5）With bushing type microreactor（4）Outboard chambers connection setting
In cavity lower part, bushing type microreactor（4）Lower end import passes through unstripped gas booster pump（2）With raw material gas tank（1）It is connected.
Bushing type microreactor（4）Cavity upper end above upper end outlet is provided with vertical exit, and vertical exit is with absorbing
Tower（3）The gas-liquid separator of interior upper end（6）Entrance is connected, gas-liquid separator（6）Upper end gas vent and water washing groove（23）Phase
Even, water washing groove（23）Gas vent with processing gas collecting box（24）It is connected, water washing groove（23）Liquid outlet by washing
Wash slot reflux pump（22）With vertical regenerator（12）Centre inlet be connected；Gas-liquid separator（6）It is set far from cavity side lower end
There are downward liquid outlet, liquid outlet and the outer absorption tower of cavity（3）Interior space connection, absorption tower（3）Lower end is provided with and chamber
Absorption in vitro tower（3）The lateral rich solution outlet of interior space connection, rich solution outlet and hydraulic turbine（7）Import be connected, fluid power is saturating
It is flat（7）Outlet pass through flash vessel（9）Respectively with poor rich liquid heat exchanger（10）, semi lean solution heat exchanger（11）The first heat exchanger channels
Entrance is connected, poor rich liquid heat exchanger（10）, semi lean solution heat exchanger（11）The first heat exchanger channels outlet and reboiler（13）Richness
Liquid import is connected.
Hydraulic turbine（7）Drive output and circulating pump（8）Driving input terminal be connected, circulating pump（8）Outlet it is same
With bushing type microreactor（4）The semi lean solution import that outboard chambers connection is arranged on cavity lower part is connected, circulating pump（8）Import
Pass through semi lean solution aftercooler（19）With semi lean solution heat exchanger（11）The second heat exchanger channels outlet be connected, semi lean solution heat exchanger（11）
The second heat exchanger channels entrance and regenerator（12）Middle part semi lean solution outlet is connected.
Poor rich liquid heat exchanger（10）The second heat exchanger channels entrance and regenerator（12）Lower end lean solution outlet is connected, rich or poor liquid
Heat exchanger（10）The second heat exchanger channels outlet pass sequentially through lean solution aftercooler（20）, MDEA circulating pumps（21）It declines with casing
Reactor（4）The lean solution import that outboard chambers connection is arranged on cavity top is connected.
Reboiler（13）Gas vent and regenerator（12）The gas access of lower part is connected, reboiler（13）Semi lean solution
Outlet and regenerator（12）The liquid inlet of lower part is connected；Regenerator（12）Lower end semi lean solution outlet respectively with reboiler（13）
Semi lean solution entrance, heat pump（15）Semi lean solution heating gate is connected.
Reboiler（13）Condensation-water drain and cooling water tank（14）Condensing water inlet be connected, cooling water tank（14）It is cold
Condensate exports and heat pump（15）Heat exchanging liquid import be connected, heat pump（15）Heat exchanging liquid outlet and cooling water tank（14）Change
Condensing water inlet is connected after heat；Heat pump（15）Recuperated gas entrance and regenerator（12）The sour moisture outlet phase of the heat of upper end
Even, heat pump（15）Heat exchange after outlet and separator（16）Entrance be connected, separator（16）Acid gas outlet with acid gas recycle
Case（18）It is connected, separator（16）Sour water outlet by sour water reflux pump（17）With regenerator（12）The sour water refluxing opening of upper end
It is connected.
Wherein raw material gas tank（1）, acid gas recycling bins（18）, processing gas collecting box（24）Belong to collection system.Unstripped gas increases
Press pump（2）, circulating pump（8）, sour water reflux pump（17）, MDEA circulating pumps（21）, sink reflux pump（22）Belong to gas-liquid conveying
System.Bushing type microreactor（4）, activator piperazine entrance（5）Belong to promotion reaction and accelerate absorption system.Gas-liquid separator
（6）, separator（16）Belong to Separate System of Water-jet.Hydraulic turbine（7）, poor rich liquid heat exchanger（10）, semi lean solution heat exchanger（11）、
Heat pump（15）Belong to fluid pressure and air heat energy recovery system.Flash vessel（9）, reboiler（13）Belong to decompression and boil auxiliary again
System.
The semi lean solution aftercooler（19）With semi lean solution heat exchanger（11）The second heat exchanger channels outlet between be provided with valve
Door.
The poor rich liquid heat exchanger（10）The second heat exchanger channels entrance and regenerator（12）Lower end is set between lean solution outlet
It is equipped with valve.
The MDEA circulating pumps（21）Valve is provided between lean solution import.
The flash vessel（9）Top flashed vapour outlet and regenerator（12）Or acid gas recycling bins（18）It is connected.
Meet this process unit of scale according to practical landfill yard operation conditions construction.In assembly, can first do main
Partially absorb tower（3）And regenerator（12）.Doing absorption tower（3）When arrange miniature double tube reactor inside it（4）It is gentle
Liquid/gas separator（6）.Hydraulic turbine is arranged then according to art work sheet（7）, flash vessel（9）, poor rich liquid heat exchanger（10）, semi lean solution
Heat exchanger（11）, reboiler（13）, cold air after lean solution（20）, separator（16）Etc. major parts.Then some cycles are installed again
Pump and heat pump.Finally arrange water washing groove（23）With gas loading attachment.
The regenerator, which can be used, contains precious sbhb type regenerators.
The CWW type heat pumps of section's Lay Tyke can be used in the heat pump.
Illustrate the course of work of the present invention below in conjunction with the accompanying drawings.
Hydraulic turbine（7）Top lead supply circulating pump（8）Energy is by rich solution pressure conversion.Flash vessel（9）Top
Egress line is after flashing rich solution, and the flashed vapour of gained parses gained from rich solution after rich solution pressure reduces, and flash gas can be straight
Access regenerator（12）, acid gas recycling bins can also be directly accessed（18）.By heat exchanger（10）、（11）Rich solution afterwards is direct
From reboiler（13）Lower part enters, heat exchanger（10）、（11）Top outlet is semi lean solution, and lean solution heat exchange exports.Reboiler（13）
Left side has two imports to enter regenerator（12）, enterprising mouth line is some in reboiler（13）The gas being precipitated after heating, under into
Mouth line is heated to reflux for semi lean solution into regenerator（12）.13 upper right import of reboiler is used for reboiler for low-pressure steam（13）Work
Make, from reboiler（13）It is connected into cooling water tank（14）For condensed water, the product of reboiler work gained.Cooling water tank（14）Left side
It is condensed water in heat pump（15）In with heat acid gas exchange heat using heat pump（15）It flows back after most of heat setting in absorption condensation water
Into after cooling water tank（14）Natural cooling.Heat pump（15）Lower-left lead is connected to heat pump 15 with the semi lean solution to boil again and absorbs thermal energy
Afterwards reboiler is entered back into the heating of semi lean solution temperature（13）.Heat pump（15）Left side is acid gas import, and top is exports after heat exchange.It inhales
Receive tower（3）Right side upper inlet is lean solution import, and lower right-hand side is semi lean solution import.Just from absorption tower（3）Gas warp out
Cross water washing groove（23）Enter processing gas collecting box after washing（24）Again it collects.Water washing groove（23）Middle dissolving remainder has
After evil gas, regenerator is fetched by pumping（12）Processing.
It is understood that above with respect to the specific descriptions of the present invention, it is merely to illustrate the present invention and is not limited to this
The described technical solution of inventive embodiments, it will be understood by those of ordinary skill in the art that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technique effect；As long as meeting using needs, all protection scope of the present invention it
It is interior.
Claims (3)
1. a kind of double-tower type MEDA handles landfill gas system, decline including raw material gas tank, unstripped gas booster pump, absorption tower, casing
Reactor, activator piperazine entrance, gas-liquid separator, hydraulic turbine, circulating pump, flash vessel, poor rich liquid heat exchanger, semi lean solution change
It is hot device, regenerator, reboiler, cooling water tank, heat pump, separator, sour water reflux pump, acid gas recycling bins, semi lean solution aftercooler, poor
Liquid aftercooler, MDEA circulating pumps, sink reflux pump, water washing groove, processing gas collecting box, it is characterised in that casing declines reaction
Device is arranged in absorption tower in the cavity of side, and activator piperazine entrance is connected with bushing type microreactor outboard chambers and is arranged on
Cavity lower part, the lower end import of bushing type microreactor are connected by unstripped gas booster pump with raw material gas tank；
Cavity upper end above bushing type microreactor upper end outlet is provided with vertical exit, vertical exit and upper end in absorption tower
Gas-liquid separator entrance be connected, gas-liquid separator upper end gas vent is connected with water washing groove, the gas vent of water washing groove
It is connected with processing gas collecting box, the centre inlet phase that the liquid outlet of water washing groove passes through sink reflux pump and vertical regenerator
Even；Gas-liquid separator is provided with downward liquid outlet, liquid outlet and space in the outer absorption tower of cavity far from cavity side lower end
Connection, the lateral rich solution outlet that absorption tower lower end is provided with space connects in absorption tower outside cavity, rich solution outlet are saturating with fluid power
Flat import is connected, and the outlet of hydraulic turbine first is changed by flash vessel with poor rich liquid heat exchanger, semi lean solution heat exchanger respectively
Passage of heat entrance is connected, poor rich liquid heat exchanger, the first heat exchanger channels outlet of semi lean solution heat exchanger and the rich solution import of reboiler
It is connected；
The drive output of hydraulic turbine is connected with the driving input terminal of circulating pump, and the outlet of circulating pump is reacted with declining with casing
The semi lean solution import that the connection of device outboard chambers is arranged on cavity lower part is connected, and the import of circulating pump passes through semi lean solution aftercooler and half
The second heat exchanger channels outlet of lean solution heat exchanger is connected, the second heat exchanger channels entrance of semi lean solution heat exchanger and in the middle part of regenerator half
Lean solution outlet is connected；
Second heat exchanger channels entrance of poor rich liquid heat exchanger is connected with the outlet of regenerator lower end lean solution, and the second of poor rich liquid heat exchanger
Heat exchanger channels outlet passes sequentially through lean solution aftercooler, MDEA circulating pumps and is arranged on being connected with bushing type microreactor outboard chambers
The lean solution import on cavity top is connected；
The gas vent of reboiler is connected with the gas access of regenerator lower part, semi lean solution outlet and the regenerator lower part of reboiler
Liquid inlet be connected；It is heated respectively with the semi lean solution entrance of reboiler, heat pump semi lean solution the semi lean solution outlet of regenerator lower end
Mouth is connected；
The condensation-water drain of reboiler is connected with the condensing water inlet of cooling water tank, the condensation-water drain of cooling water tank and heat pump
Heat exchanging liquid import is connected, and the heat exchanging liquid outlet of heat pump is connected with condensing water inlet after the heat exchange of cooling water tank；Heat pump changes
Heater gas inlet port is connected with the sour moisture outlet of the heat of regenerator upper end, outlet and the entrance phase of separator after the heat exchange of heat pump
Even, the acid gas outlet of separator is connected with acid gas recycling bins, and the sour water outlet of separator passes through on sour water reflux pump and regenerator
The sour water refluxing opening at end is connected；
Second heat exchanger channels of the semi lean solution aftercooler and semi lean solution heat exchanger are provided with valve between outlet；
Valve is provided between the second heat exchanger channels entrance and regenerator lower end the lean solution outlet of the poor rich liquid heat exchanger.
A kind of 2. double-tower type MEDA processing landfill gas system according to claim 1, it is characterised in that the MDEA circulating pumps
Valve is provided between lean solution import.
A kind of 3. double-tower type MEDA processing landfill gas system according to claim 1, it is characterised in that the flash vessel top
Flashed vapour outlet is connected with regenerator or acid gas recycling bins.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610571782.3A CN106000009B (en) | 2016-07-20 | 2016-07-20 | A kind of double-tower type MEDA handles landfill gas system |
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| CN201610571782.3A CN106000009B (en) | 2016-07-20 | 2016-07-20 | A kind of double-tower type MEDA handles landfill gas system |
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| CN106000009B true CN106000009B (en) | 2018-06-19 |
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| CN113041799A (en) * | 2021-03-12 | 2021-06-29 | 中国华能集团清洁能源技术研究院有限公司 | IGCC-based pre-combustion CO2Pressure energy recovery device of trapping system |
| CN113847430B (en) * | 2021-09-16 | 2023-09-12 | 宣达实业集团有限公司 | Sour gas self-sealing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4775519A (en) * | 1985-10-31 | 1988-10-04 | Texaco Inc. | Removal of acid gases from gas streams |
| EP2125164A1 (en) * | 2007-01-25 | 2009-12-02 | Shell Internationale Research Maatschappij B.V. | Process for producing a pressurised co2 stream in a power plant integrated with a co2 capture unit |
| CN102657998A (en) * | 2012-04-25 | 2012-09-12 | 中国石油化工股份有限公司 | Mixed solvent for removing acid gas |
| CN205850531U (en) * | 2016-07-20 | 2017-01-04 | 辽宁工业大学 | A kind of double-tower type MEDA processes landfill gas system |
-
2016
- 2016-07-20 CN CN201610571782.3A patent/CN106000009B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4775519A (en) * | 1985-10-31 | 1988-10-04 | Texaco Inc. | Removal of acid gases from gas streams |
| EP2125164A1 (en) * | 2007-01-25 | 2009-12-02 | Shell Internationale Research Maatschappij B.V. | Process for producing a pressurised co2 stream in a power plant integrated with a co2 capture unit |
| CN102657998A (en) * | 2012-04-25 | 2012-09-12 | 中国石油化工股份有限公司 | Mixed solvent for removing acid gas |
| CN205850531U (en) * | 2016-07-20 | 2017-01-04 | 辽宁工业大学 | A kind of double-tower type MEDA processes landfill gas system |
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| CN106000009A (en) | 2016-10-12 |
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