CN206276196U - A kind of CO high2The energy-saving gas cleaning unit of the rate of recovery - Google Patents
A kind of CO high2The energy-saving gas cleaning unit of the rate of recovery Download PDFInfo
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- CN206276196U CN206276196U CN201620580156.6U CN201620580156U CN206276196U CN 206276196 U CN206276196 U CN 206276196U CN 201620580156 U CN201620580156 U CN 201620580156U CN 206276196 U CN206276196 U CN 206276196U
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Abstract
The utility model is related to a kind of CO high2The energy-saving gas cleaning unit of the rate of recovery, including absorption tower, middle pressure flash column, CO2Flash column and H2S flash columns；The upper tower of flash column is pressed in the first outlet connection of absorption tower T1, the first entrance of tower under the second outlet and middle pressure flash column on rich methanol pipeline connection absorption tower；The tower top outlet and lower tower second entrance of flash column are pressed in the connection of first reflux line；Flash column and the first injector, the outlet connection CO of the first injector are pressed in second rich carbon methanol pipeline connection2Flash column；Bottom of towe outlet second injector of connection of middle pressure flash column, the outlet connection H of the second injector2S flash columns；3rd heat exchange pipeline connects CO2The bottom of towe liquid-phase outlet and tower top entrance of flash column, the first injection pipe connection CO2Flash column and the first injector；8th heat exchange pipeline connects H2The bottom of towe liquid-phase outlet and tower top entrance of S flash columns, the second injection pipe connection H2S flash columns and the second injector.
Description
Technical field
The utility model is related to low-temp methanol and washes, and refers specifically to a kind of CO high2The energy-saving gas cleaning unit of the rate of recovery.
Background technology
Existing low-temp methanol washes technology generally by the way of low-pressure nitrogen air lift by the CO in the sulfur-rich methyl alcohol of low pressure2Gas
Body is parsed so as to realize H2The enrichment of S, can so make a large amount of CO2Gas enters emptying end gas, causes low temperature washing device for methanol
CO2The rate of recovery is low.Meanwhile, when using semi lean solution flow, CO is reclaimed in rich carbon low-pressure methanol flash distillation2Gas rear portion liquid phase
It is sent to absorption tower and washes methyl alcohol as master, low pressure flash is limited by flash temperature and flashing pressure, the master for returning to absorption tower washes first
CO in alcohol2Too high levels, influence assimilation effect, and causing the methanol loop amount of device needs increases, and energy consumption increases.
The content of the invention
The present situation that technical problem to be solved in the utility model is directed to prior art provides a kind of CO2The rate of recovery can reach
To more than the 99% and good CO high of energy conservation and consumption reduction effects2The energy-saving gas cleaning unit of the rate of recovery.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：The CO high2The energy-saving gas of the rate of recovery
Body wash mill, it is characterised in that including：
Raw material feed channel connects the bottom first entrance on absorption tower, and poor methanol pipeline and master wash methanol pipeline and connect institute respectively
The top second entrance and the 3rd entrance on absorption tower are stated, the absorption tower top is connected with the purification tracheae for discharging purified gas
Road, the bottom on the absorption tower is provided with the rich methanol pipeline for discharging rich methanol；
The upper tower of first outlet and middle pressure flash column of the first rich carbon methanol pipeline connection in the middle part of the absorption tower enters
Mouthful, the rich carbon methanol pipeline is provided with the first pressure-reducing valve；The second of the middle and lower part on the rich methanol pipeline connection absorption tower goes out
The first entrance of tower under mouth and medium pressure flash column, the rich methanol pipeline is provided with the second pressure-reducing valve；
The upper column overhead outlet of the first reflux line connection medium pressure flash column and the lower tower the of medium pressure flash column
Two entrances, the lower column overhead outlet conduit of medium pressure flash column connects the raw material feed channel；
The outlet of tower bottom of towe enters by the first of second rich carbon methanol pipeline the first injector of connection on medium pressure flash column
Mouthful, the outlet conduit connection CO of first injector2The centre entrance of flash column；The lower tower bottom of towe of medium pressure flash column goes out
Mouth connects the first entrance of the second injector, the outlet conduit connection H of the second injector by sulfur-rich methanol pipeline2S flash columns
Centre entrance；
The CO2The bottom of towe liquid-phase outlet of flash column connects the CO by the 3rd heat exchange pipeline2The tower top of flash column enters
Mouthful, the 3rd heat exchange pipeline is provided with the first pump and the 3rd heat exchanger；The CO2The bottom gaseous phase outlet of flash column is by the
One injection pipe connects the second entrance of first injector；The CO2The CO of flash column2Product gas outlet connects product gas
Pipeline；
The H2The bottom of towe liquid-phase outlet of S flash columns connects the H by the 8th heat exchange pipeline2The tower top of S flash columns enters
Mouthful, the 8th heat exchange pipeline is provided with the 3rd pump and the 8th heat exchanger；The H2The lower part outlet of S flash columns is by the second spray
Penetrate the second entrance that pipeline connects second injector；The H2The product gas outlet connection product feed channel of S flash columns, institute
State H2The sulfur-rich methanol outlet of liquid phase of S flash columns is derived by discharge tube.
Preferably, the CO2Flash column can be five sections of towers；The H2S flash columns are five sections of towers；
The outlet conduit of first injector connects the CO2The tower top entrance of III sections of flash column；The CO2Flash distillation
The outlet at bottom of III sections of tower connects IV sections of tower top entrance by the first heat exchange pipeline, and first heat exchange pipeline is provided with
First Heat Exchanger；The CO2The outlet at bottom of IV sections of flash column is divided into two strands, connects described by the first connecting pipe respectively
H2The top entry of IV sections of S flash columns, the CO is connected by the second heat exchange pipeline2The top entry of V sections of flash column；Institute
State the first connecting pipe and be provided with the 5th pump, second heat exchange pipeline is provided with the second heat exchanger；The CO2Flash column
III sections and IV sections of top exit connects the product feed channel；
The CO2The top exit of V sections of flash column connects first injection pipe；The CO2V sections of flash column
Outlet at bottom connects the CO by the 3rd heat exchange pipeline2The top entry of I sections of flash column, sets on the 3rd heat exchange pipeline
There is the 3rd heat exchanger；
The CO2The top exit of I sections of flash column connects the CO2The lower entrances of IV sections of flash column；The CO2
The outlet at bottom of I sections of flash column connects the CO by the 4th heating pipe2The top entry of II sections of flash column, described
Four heating pipes are provided with the 4th heater；
The CO2The top exit of II sections of flash column connects first injection pipe, the CO2II sections of flash column
Outlet at bottom connect the master and wash methanol pipeline, the master washes methanol pipeline and is provided with the second pump and the 5th heat exchanger；It is described
The outlet conduit of the second injector connects the H2The top entry of III sections of S flash columns；The H2III sections of S flash columns and
IV sections of top exit connects the product feed channel, the H2The outlet at bottom of II sections of S flash columns connects the delivery pipe
Road；The H2II sections and V sections ejection outlet connection second injection pipe of S flash columns；The H2The bottom of V sections of S flash columns
Portion exports and I sections of top entry connects the 8th heat exchange pipeline；The H2The outlet at bottom of I sections of S flash columns is by the
Nine heat exchange pipelines connect the H2The top entry of II sections of S flash columns, the 9th heat exchange pipeline is provided with the 9th heat exchanger；
The H2The bottom of towe outlet of III sections of S flash columns connects described IV sections top entry, the described 6th by the 6th heat exchange pipeline
Heat exchange pipeline is provided with the 6th heat exchanger, the H2The outlet at bottom of IV sections of S flash columns connects V sections by the 7th heat exchange pipeline
Top entry, the 7th heat exchange pipeline is provided with the 7th heat exchanger.
The CO2Flash column can also be four sections of towers；The H2S flash columns are four sections of towers；
The outlet conduit of first injector connects the CO2The tower top entrance of III sections of flash column；The CO2Dodge
The outlet at bottom for steaming III sections of tower passes through the tower top entrance that the first heat exchange pipeline connects IV sections, is set on first heat exchange pipeline
There is First Heat Exchanger；The CO2The outlet at bottom of IV sections of flash column is divided into two strands, connects institute by the first connecting pipe respectively
State H2The top entry of IV sections of S flash columns, the CO is connected by the second heat exchange pipeline2The top entry of V sections of flash column；
First connecting pipe is provided with the 5th pump, and second heat exchange pipeline is provided with the second heat exchanger；The CO2Flash column
III sections and IV sections of top exit connects the CO2Product feed channel；
The CO2The top exit of V sections of flash column connects first injection pipe；The CO2V sections of flash column
Outlet at bottom connects the CO by the 3rd heat exchange pipeline2The top entry of I sections of flash column, sets on the 3rd heat exchange pipeline
There are the first pump and the 3rd heat exchanger；
The CO2The top exit of I sections of flash column connects the CO2The lower entrances of IV sections of flash column；The CO2
The outlet at bottom of I sections of flash column connects the CO by the 4th heating pipe2The top entry of II sections of flash column, described
Four heating pipes are provided with the 4th heater；
The CO2The top exit of II sections of flash column connects first injection pipe, the CO2II sections of flash column
Outlet at bottom connect the master and wash methanol pipeline, the master washes methanol pipeline and is provided with the second pump and the 5th heat exchanger；
The outlet conduit of second injector connects the H2The top entry of III sections of S flash columns；The H2S is flashed
The top exit connection CO of III sections and IV sections of tower2Product feed channel, the H2The outlet at bottom of II sections of S flash columns connects
Connect the discharge tube；The H2II sections and V sections ejection outlet connection second injection pipe of S flash columns；The H2S dodges
The outlet at bottom and I sections of top entry for steaming V sections of tower connect the 8th heat exchange pipeline, and the 8th heat exchange pipeline is provided with
8th heat exchanger；The H2The outlet at bottom of I sections of S flash columns connects the H by the 9th heat exchange pipeline2II sections of S flash columns
Top entry, the 9th heat exchange pipeline is provided with the 9th heat exchanger；The H2The bottom of towe outlet of III sections of S flash columns is logical
Cross the 6th heat exchange pipeline and connect described IV sections centre entrance, the 6th heat exchange pipeline is provided with the 6th heat exchanger；The H2S
The outlet at bottom of IV sections of flash column connects V sections of top entry by the 7th heat exchange pipeline, is set on the 7th heat exchange pipeline
There is the 7th heat exchanger.
Or, the CO2Flash column can be six sections of towers；The H2S flash columns are six sections of towers；
The outlet conduit of first injector connects the CO2The tower top entrance of III sections of flash column；The CO2Flash distillation
The outlet at bottom of III sections of tower connects IV sections of tower top entrance by the first heat exchange pipeline, and first heat exchange pipeline is provided with
First Heat Exchanger；The CO2The outlet at bottom of IV sections of flash column connects V sections of tower top entrance, institute by the 8th heat exchange pipeline
State the 8th heat exchange pipeline and be provided with the 8th heat exchanger；The CO2The outlet at bottom of V sections of flash column is divided into two strands, passes through respectively
First connecting pipe connects the H2The top entry of V sections of S flash columns, the CO is connected by the second heat exchange pipeline2Flash column
VI sections of top entry；First connecting pipe is provided with the 5th pump, and second heat exchange pipeline is provided with the second heat exchange
Device；The CO2The top exit of III sections, IV sections and V sections of flash column connects the CO2Product feed channel；
The CO2The outlet at bottom of VI sections of flash column connects the CO by the 3rd heat exchange pipeline2I sections of flash column
Top entry, the 3rd heat exchange pipeline is provided with the 3rd heat exchanger；
The CO2The top exit of I sections of flash column connects the CO2The lower entrances of V sections of flash column；The CO2
The outlet at bottom of I sections of flash column connects the CO by the 4th heating pipe2The top entry of II sections of flash column, described
Four heating pipes are provided with the 4th heater；
The CO2Top exit connection first injection pipe of II sections and V sections of flash column (T3), the CO2Flash distillation
The outlet at bottom of II sections of tower connects the master and washes methanol pipeline, and the master washes methanol pipeline and is provided with the second pump and the 5th heat exchange
Device；
The outlet conduit of second injector connects the H2The top entry of III sections of S flash columns；The H2S is flashed
The top exit of III sections, IV sections and V sections of tower connects the product feed channel, the H2The outlet at bottom of II sections of S flash columns
Connect the discharge tube；The H2Top exit connection second injection pipe of II sections and VI sections of S flash columns；It is described
8th heat exchange pipeline is connected to the H2Between the outlet at bottom and I sections of top entry of VI sections of S flash columns, the described 8th changes
Hot channel is provided with the 8th heat exchanger；The H2The top exit connection H of I sections of S flash columns2The bottom of V sections of S flash columns enters
Mouthful；
The H2The outlet at bottom of I sections of S flash columns connects the H by the 9th heat exchange pipeline2II sections of S flash columns
Top entry, the 9th heat exchange pipeline is provided with the 9th heat exchanger；The bottom of towe outlet of III sections of H2S flash columns passes through the tenth
One heat exchange pipeline connects IV sections of top entry, and the 11st heat exchange pipeline is provided with the 11st heat exchanger；The H2S flash columns
IV sections of bottom of towe outlet connects described V sections top entry by the 6th heat exchange pipeline, and the 6th heat exchange pipeline is provided with the
Six heat exchangers；The H2The outlet at bottom of V sections of S flash columns connects VI sections of top entry by the 7th heat exchange pipeline, described
7th heat exchange pipeline is provided with the 7th heat exchanger.
In above-mentioned each scheme, the first bypass, first bypass can also be also parallel with first connecting pipe
It is provided with first gas compressor；
The second bypass is parallel with second connecting pipe, second bypass is provided with second gas compressor.
First injector and/or second injector are preferably aspiration-type sprayer.
Compared with prior art, CO high provided by the utility model2The energy-saving gas cleaning unit of the rate of recovery will be negative
Pressure flashed vapour is drawn into rich carbon methyl alcohol and sulfur-rich methyl alcohol, makes full use of rich carbon methyl alcohol and sulfur-rich methyl alcohol vacuum flashing this part energy
Amount, realizes the purpose of energy-conservation；Rich carbon methyl alcohol after stepped heating is flashed washes methyl alcohol and is sent to absorption tower as master, and master is washed in methyl alcohol
CO2Concentration is reduced, and enhances the assimilation effect that specific discharge master washes methyl alcohol, reduces system methanol loop amount, while
Nitrogen air lift is eliminated, so as to reduce the energy consumption of whole device；Supporting scale is 120000Nm3The device for producing hydrogen of/h is used,
Fractional energy savings is up to 42.45%, and ice maker cold saves 6.36%, and year saves 10,130,000 yuan of operating cost.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model embodiment 1；
Fig. 2 is the schematic diagram of the utility model embodiment 2；
Fig. 3 is the schematic diagram of the utility model embodiment 3.
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment 1
As shown in figure 1, the CO high2The energy-saving gas cleaning unit of the rate of recovery includes：
Raw material feed channel 1 connects the lower entrances of absorption tower T1, and poor methanol pipeline 3 is connected with from absorption tower top first
Top second entrance and the 3rd entrance that methanol pipeline 4 connects absorption tower T1 respectively are washed with master, T1 tops in absorption tower are connected with use
In the purification feed channel pipeline 2 of discharge purified gas, the bottom of absorption tower T1 is provided with the rich methanol pipeline 7 for discharging rich methanol；
The upper tower that first rich carbon methanol pipeline 5 connects the first outlet and middle pressure flash column T2 being located in the middle part of the T1 of absorption tower enters
Mouthful, rich carbon methanol pipeline 5 is provided with the first pressure-reducing valve V1；The second outlet of the middle and lower part of the connection of rich methanol pipeline 6 absorption tower T1
With the lower tower first entrance of middle pressure flash column T2, rich methanol pipeline 6 is provided with the second pressure-reducing valve V2；
First reflux line 8 presses the upper column overhead outlet of flash column T2 and the lower tower second of middle pressure flash column T2 to enter in connecting
Mouthful, the lower column overhead outlet conduit 9 connection raw material feed channel 1 of middle pressure flash column T2；
The outlet of tower bottom of towe connects the first injector of drawing-in type Y1 by the second rich carbon methanol pipeline 10 on middle pressure flash column T2
First entrance, the first injector Y1 outlet conduit 12 connection CO2The stage casing tower entrance of flash column T3；Middle pressure flash column T2's
Lower tower bottom of towe outlet connects the first entrance of the second injector of drawing-in type Y2 by sulfur-rich methanol pipeline 11, the second injector Y2's
Outlet conduit 32 connects H2The stage casing tower entrance of S flash columns T4；
CO2Flash column T3 is five sections of towers；H2S flash columns T4 is five sections of towers；
The connection of outlet conduit 12 CO of the first injector2The tower top entrance of III sections of flash column T3；CO2Flash column T3's
III sections of outlet at bottom connects IV sections of tower top entrance by the first heat exchange pipeline 27, and the first heat exchange pipeline 27 is provided with first
Heat exchanger H1；CO2The outlet at bottom of IV sections of flash column T3 is divided into two strands, connects H by the first connecting pipe 17 respectively2S is flashed
The top entry of IV sections of tower T4, by the second heat exchange pipeline 19 connect CO2The top entry of V sections of flash column T3；First connects
Adapter road 17 is provided with the 5th pump P5, and the second heat exchange pipeline 19 is provided with the second heat exchanger H2；CO2III sections of flash column T3 and
IV sections of top exit connection CO2Product feed channel 31；
CO2The top exit of V sections of flash column T3 connects the first injection pipe 28；Is parallel with first injection pipe 28
One bypass 29, the first bypass 29 is provided with first gas compressor C1；
CO2The outlet at bottom of V sections of flash column T3 connects CO by the 3rd heat exchange pipeline 212The top of I sections of flash column T3
Entrance, the 3rd heat exchange pipeline 21 is provided with the first pump P1 and the 3rd heat exchanger H3；
CO2The top exit of I sections of flash column T3 connects CO by pipeline 292The lower entrances of IV sections of flash column T3；
CO2The outlet at bottom of I sections of flash column T3 connects CO by the 4th heat exchange pipeline2The top entry of II sections of flash column T3, the 4th
Heat exchange pipeline is provided with the 4th heater H4；
CO2The top exit of II sections of flash column T3 connects the first injection pipe 28, CO2The bottom of II sections of flash column T3
Outlet connection master washes methanol pipeline 4, and master washes methanol pipeline 4 and is provided with the second pump P2 and the 5th heat exchanger H5；
The connection of outlet conduit 32 H of the second injector Y22The top entry of III sections of S flash columns T4；H2S flash columns T4
III sections and IV section top exit connect CO2Product feed channel 31, H2The outlet at bottom connection discharge of II sections of S flash columns T4
Pipeline 43, pipeline 43 is provided with the 4th pump P4；H2II sections and V sections ejection outlet second injection pipe 46 of connection of S flash columns T4；
The second bypass 45 is parallel with second connecting pipe 46, the second bypass 45 is provided with second gas compressor C2.
H2The outlet at bottom of V sections of S flash columns T4 and I sections of top entry connect the 8th heat exchange pipeline 40, the 8th heat exchange
Pipeline 40 is provided with the 8th heat exchanger H8；H2The outlet at bottom of I sections of S flash columns T4 connects H by the 9th heat exchange pipeline 422S dodges
II sections of tower T4 of top entry is steamed, the 9th heat exchange pipeline 42 is provided with the 9th heat exchanger H9；H2III sections of S flash columns T4
Bottom of towe outlet connects IV sections of centre entrance by the 6th heat exchange pipeline, and the 6th heat exchange pipeline is provided with the 6th heat exchanger H6；H2S
The outlet at bottom of IV sections of flash column T4 connects V sections of top entry by the 7th heat exchange pipeline, and the 7th heat exchange pipeline is provided with
7th heat exchanger H7.
Embodiment 2
As shown in Fig. 2 the CO in the present embodiment2Flash column T3 and H2S flash columns T4 is four sections, specially：
The connection of outlet conduit 12 CO of the first injector2The top entry of III sections of flash column T3；CO2Flash column T3's
III sections of outlet at bottom is divided into two strands, connects H by the first connecting pipe 17 respectively2The top of III sections of S flash columns T4 enters
Mouthful, by the second heat exchange pipeline 19 connect CO2The top entry of IV sections of flash column T3；First connecting pipe 17 is provided with the 5th
Pump P5, the second heat exchange pipeline 19 is provided with the second heat exchanger H2；CO2The top exit connection CO of III sections of flash column T32Product
Feed channel 31；
CO2Top exit first injection pipe 28 of connection of IV sections and II sections of flash column T3；CO2IV sections of flash column T3
Outlet at bottom by the 3rd heat exchange pipeline 21 connect CO2The top entry of I sections of flash column T3, sets on the 3rd heat exchange pipeline 21
There is the 3rd heat exchanger H3；
CO2The top exit of I sections of flash column T3 connects CO by pipeline 292The lower entrances of III sections of flash column T3；
CO2The outlet at bottom of I sections of flash column T3 connects CO by the 4th heat exchange pipeline 242The top entry of II sections of flash column T3, the
Four heat exchange pipelines 24 are provided with the 4th heater H4；
CO2The outlet at bottom connection master of II sections of flash column T3 washes methanol pipeline 4, and master washes methanol pipeline 4 and is provided with second
Pump P2 and the 5th heat exchanger H5；
The connection of outlet conduit 32 H of the second injector Y22The centre entrance of III sections of S flash columns T4；H2S flash columns T4's
III sections of top exit connection CO2Product feed channel 31, H2The outlet at bottom connection discharge tube 43 of II sections of S flash columns T4；
H2Top exit second injection pipe 46 of connection of II sections and IV sections of S flash columns T4；H2The bottom of IV sections of S flash columns T4 goes out
Mouth and I sections of top entry connect the 8th heat exchange pipeline 40；H2The outlet at bottom of I sections of S flash columns T4 passes through the 9th heat exchanger tube
Road 42 connects H2The top entry of II sections of S flash columns T4, the 9th heat exchange pipeline 42 is provided with the 9th heat exchanger H9；H2S flash columns
The outlet at bottom connection discharge tube 43 of II sections of T4, discharge tube 43 is provided with the 4th pump P4；H2III sections of S flash columns T4
Bottom of towe outlet IV sections of top entry is connected by the 7th heat exchange pipeline, the 7th heat exchange pipeline is provided with the 7th heat exchanger H7.
Remaining content is same as Example 1.
Embodiment 3
As shown in figure 3, the CO in the present embodiment2Flash column T3 and H2S flash columns T4 is six sections, specially：
The connection of outlet conduit 12 CO of the first injector2The tower top entrance of III sections of flash column T3；CO2Flash column T3's
III sections of outlet at bottom connects IV sections of tower top entrance by pipeline 15, and pipeline 15 is provided with First Heat Exchanger H1；CO2Flash distillation
The outlet at bottom of IV sections of tower T3 connects V sections of tower top entrance by the 8th heat exchange pipeline 40, and the 8th heat exchange pipeline 40 is provided with
8th heat exchanger H8；CO2The outlet at bottom of V sections of flash column T3 is divided into two strands, connects H by the first connecting pipe 17 respectively2S
The top entry of V sections of flash column T4, by the second heat exchange pipeline 19 connect CO2The top entry of VI sections of flash column T3；The
One connecting pipe 17 is provided with the 5th pump P5, and the second heat exchange pipeline 19 is provided with the second heat exchanger H2；CO2The III of flash column T3
Section, the top exit of IV section and V sections connect CO2Product feed channel 31；
CO2The outlet at bottom of VI sections of flash column T3 connects CO by the 3rd heat exchange pipeline 212The top of I sections of flash column T3
Portion's entrance, the 3rd heat exchange pipeline 21 is provided with the 3rd heat exchanger H3；
CO2The top exit of I sections of flash column T3 connects CO by pipeline 292The lower entrances of V sections of flash column T3；CO2
The outlet at bottom of I sections of flash column T3 connects CO by the 4th heat exchange pipeline2The top entry of II sections of flash column T3, the 4th changes
Hot channel is provided with the 4th heater H4；
CO2Top exit first injection pipe 28, CO of connection of II sections and V sections of flash column T32II sections of flash column T3
Outlet at bottom connection master washes methanol pipeline 4, and master washes methanol pipeline 4 and is provided with the second pump P2 and the 5th heat exchanger H5；
The connection of outlet conduit 32 H of the second injector Y22The top entry of III sections of S flash columns T4；H2S flash columns T4's
III sections, IV sections and V sections of top exit connection product feed channel 31, H2The outlet at bottom connection discharge of II sections of S flash columns T4
Pipeline 43, discharge tube 43 is provided with the 4th pump P4；H2The top exit connection second of II sections and VI sections of S flash columns T4 is sprayed
Pipeline 46；8th heat exchange pipeline 40 is connected to H2Between the outlet at bottom and I sections of top entry of VI sections of S flash columns T4, return
Return the 8th heat exchange pipeline 40 and be provided with the 8th heat exchanger H8；H2The top exit of I sections of S flash columns T4 connects V by pipeline 48
The lower entrances of section；
H2The outlet at bottom of I sections of S flash columns T4 connects H by the 9th heat exchange pipeline 422The top of II sections of S flash columns T4
Portion's entrance, the 9th heat exchange pipeline 42 is provided with the 9th heat exchanger H9；H2The bottom of towe outlet of III sections of S flash columns passes through the 11st
Heat exchange pipeline connects IV sections of top entry, and the 11st heat exchange pipeline is provided with the 11st heat exchanger；The H2The IV of S flash columns
The bottom of towe outlet of section connects described V sections top entry by the 6th heat exchange pipeline, and the 6th heat exchange pipeline is provided with the 6th
Heat exchanger；H2The outlet at bottom of V sections of S flash columns T4 connects VI sections of top entry, the 7th heat exchange by the 7th heat exchange pipeline
Pipeline is provided with the 7th heat exchanger H7.
Claims (6)
1. a kind of CO high2The energy-saving gas cleaning unit of the rate of recovery, it is characterised in that including：
The bottom first entrance of raw material feed channel (1) connection absorption tower (T1), poor methanol pipeline (3) and master wash methanol pipeline (4)
The top second entrance and the 3rd entrance on the absorption tower (T1) are connected respectively, and absorption tower (T1) top is connected with for arranging
The purification feed channel (2) of purified gas is put, the bottom of the absorption tower (T1) is provided with the rich methanol pipeline for discharging rich methanol
(7)；
First outlet and middle pressure flash column (T2) of first rich carbon methanol pipeline (5) connection in the middle part of the absorption tower (T1)
Upper tower entrance, the rich carbon methanol pipeline (5) is provided with the first pressure-reducing valve (V1)；Rich methanol pipeline (6) connects the absorption tower
(T1) first entrance of tower under the second outlet and medium pressure flash column (T2) of middle and lower part, on the rich methanol pipeline (6)
It is provided with the second pressure-reducing valve (V2)；
The outlet of upper column overhead and the medium pressure flash column (T2) of the first reflux line (8) connection medium pressure flash column (T2)
Lower tower second entrance, the lower column overhead outlet conduit (9) of medium pressure flash column (T2) connects the raw material feed channel (1)；
The outlet of tower bottom of towe connects the first injector (Y1) by the second rich carbon methanol pipeline (10) on medium pressure flash column (T2)
First entrance, first injector (Y1) outlet conduit (12) connection CO2The centre entrance of flash column (T3)；In described
The lower tower bottom of towe outlet of pressure flash column (T2) connects the first entrance of the second injector (Y2) by sulfur-rich methanol pipeline (11), the
Outlet conduit (32) the connection H of two injectors (Y2)2The centre entrance of S flash columns (T4)；
The CO2The bottom of towe liquid-phase outlet of flash column (T3) connects the CO by the 3rd heat exchange pipeline (21)2Flash column (T3)
Tower top entrance, the 3rd heat exchange pipeline (21) is provided with the first pump (P1) and the 3rd heat exchanger (H3)；The CO2Flash column
(T3) bottom gaseous phase outlet connects the second entrance of first injector (Y1) by the first injection pipe (28)；It is described
CO2The CO of flash column (T3)2Product gas outlet connects product feed channel (31)；
The H2The bottom of towe liquid-phase outlet of S flash columns (T4) connects the H by the 8th heat exchange pipeline (40)2S flash columns (T4)
Tower top entrance, the 8th heat exchange pipeline (40) is provided with the 3rd pump (P3) and the 8th heat exchanger (H8)；The H2S flash columns
(T4) lower part outlet connects the second entrance of second injector (Y2) by the second injection pipe (46)；The H2S dodges
The product gas outlet for steaming tower (T4) connects product feed channel (31), the H2The sulfur-rich methanol outlet of liquid phase of S flash columns (T4) leads to
Cross discharge tube (43) derivation.
2. CO high according to claim 12The energy-saving gas cleaning unit of the rate of recovery, it is characterised in that the CO2Flash distillation
Tower (T3) is five sections of towers；The H2S flash columns (T4) are five sections of towers；
The outlet conduit (12) of first injector connects the CO2The tower top entrance of III sections of flash column (T3)；The CO2
The outlet at bottom of III sections of flash column (T3) connects IV sections of tower top entrance by the first heat exchange pipeline (27), and described first changes
Hot channel (27) is provided with First Heat Exchanger (H1)；The CO2The outlet at bottom of IV sections of flash column (T3) is divided into two strands, respectively
The H is connected by the first connecting pipe (17)2The top entry of IV sections of S flash columns (T4), by the second heat exchange pipeline
(19) CO is connected2The top entry of V sections of flash column (T3)；First connecting pipe (17) is provided with the 5th pump
(P5), second heat exchange pipeline (19) is provided with the second heat exchanger (H2)；The CO2III sections and IV sections of flash column (T3)
Top exit connect the product feed channel (31)；
The CO2The top exit of V sections of flash column (T3) connects first injection pipe (28)；The CO2Flash column (T3)
V sections of outlet at bottom the CO is connected by the 3rd heat exchange pipeline (21)2The top entry of I sections of flash column (T3), it is described
3rd heat exchange pipeline (21) is provided with the 3rd heat exchanger (H3)；
The CO2The top exit of I sections of flash column (T3) connects the CO2The lower entrances of IV sections of flash column (T3)；It is described
CO2The outlet at bottom of I sections of flash column (T3) connects the CO by the 4th heating pipe (24)2II sections of flash column (T3)
Top entry, the 4th heating pipe (24) is provided with the 4th heater (H4)；
The CO2The top exit of II sections of flash column (T3) connects first injection pipe (28), the CO2Flash column
(T3) outlet at bottom of II sections connects the master and washes methanol pipeline (4), and the master washes methanol pipeline (4) and is provided with the second pump
And the 5th heat exchanger (H5) (P2)；The outlet conduit (32) of second injector (Y2) connects the H2S flash columns (T4)
III sections of top entry；The H2The top exit connection product feed channel of III sections and IV sections of S flash columns (T4)
(31), the H2The outlet at bottom of II sections of S flash columns (T4) connects the discharge tube (43)；The H2S flash columns (T4)
II sections and V sections ejection outlet connection second injection pipe (46)；The H2The outlet at bottom and I of V sections of S flash columns (T4)
The top entry of section connects the 8th heat exchange pipeline (40)；The H2The outlet at bottom of I sections of S flash columns (T4) passes through the 9th
Heat exchange pipeline (42) connects the H2The top entry of II sections of S flash columns (T4), the 9th heat exchange pipeline (42) is provided with
9th heat exchanger (H9)；The H2The bottom of towe outlet of III sections of S flash columns (T4) connects described by the 6th heat exchange pipeline (35)
IV sections of top entry, the 6th heat exchange pipeline (35) is provided with the 6th heat exchanger (H6), the H2The IV of S flash columns (T4)
The outlet at bottom of section connects V sections of top entry by the 7th heat exchange pipeline (37), and the 7th heat exchange pipeline (37) is provided with
7th heat exchanger (H7).
3. CO high according to claim 12The energy-saving gas cleaning unit of the rate of recovery, it is characterised in that the CO2Flash distillation
Tower (T3) is four sections of towers；The H2S flash columns (T4) are four sections of towers；
The outlet conduit (12) of first injector connects the CO2The tower top entrance of III sections of flash column (T3)；The CO2
The outlet at bottom of III sections of flash column (T3) connects IV sections of tower top entrance by the first heat exchange pipeline (27), and described first changes
Hot channel (27) is provided with First Heat Exchanger (H1)；The CO2The outlet at bottom of IV sections of flash column (T3) is divided into two strands, respectively
The H is connected by the first connecting pipe (17)2The top entry of IV sections of S flash columns (T4), by the second heat exchange pipeline
(19) CO is connected2The top entry of V sections of flash column (T3)；First connecting pipe (17) is provided with the 5th pump
(P5), second heat exchange pipeline (19) is provided with the second heat exchanger (H2)；The CO2III sections and IV sections of flash column (T3)
Top exit connect the CO2Product feed channel (31)；
The CO2The top exit of V sections of flash column (T3) connects first injection pipe (28)；The CO2Flash column (T3)
V sections of outlet at bottom the CO is connected by the 3rd heat exchange pipeline (21)2The top entry of I sections of flash column (T3), it is described
3rd heat exchange pipeline (21) is provided with the first pump (P1) and the 3rd heat exchanger (H3)；
The CO2The top exit of I sections of flash column (T3) connects the CO2The lower entrances of IV sections of flash column (T3)；It is described
CO2The outlet at bottom of I sections of flash column (T3) connects the CO by the 4th heating pipe (24)2II sections of flash column (T3)
Top entry, the 4th heating pipe (24) is provided with the 4th heater (H4)；
The CO2The top exit of II sections of flash column (T3) connects first injection pipe (28), the CO2Flash column
(T3) outlet at bottom of II sections connects the master and washes methanol pipeline (4), and the master washes methanol pipeline (4) and is provided with the second pump
And the 5th heat exchanger (H5) (P2)；
The outlet conduit (32) of second injector (Y2) connects the H2The top entry of III sections of S flash columns (T4)；Institute
State H2The top exit connection CO of III sections and IV sections of S flash columns (T4)2Product feed channel (31), the H2S flash columns
(T4) outlet at bottom of II sections connects the discharge tube (43)；The H2II sections and V sections ejection outlet of S flash columns (T4)
Connect second injection pipe (46)；The H2The outlet at bottom of V sections of S flash columns (T4) and the connection of I sections of top entry
8th heat exchange pipeline (40), the 8th heat exchange pipeline (40) is provided with the 8th heat exchanger (H8)；The H2S flash columns
(T4) outlet at bottom of I sections connects the H by the 9th heat exchange pipeline (42)2The top entry of II sections of S flash columns (T4),
9th heat exchange pipeline (42) is provided with the 9th heat exchanger (H9)；The H2The bottom of towe outlet of III sections of S flash columns (T4) is logical
Cross the 6th heat exchange pipeline (35) and connect described IV sections centre entrance, the 6th heat exchange pipeline (35) is provided with the 6th heat exchanger
(H6)；The H2The outlet at bottom of IV sections of S flash columns (T4) connects V sections of top entry by the 7th heat exchange pipeline (37),
7th heat exchange pipeline (37) is provided with the 7th heat exchanger (H7).
4. CO high according to claim 12The energy-saving gas cleaning unit of the rate of recovery, it is characterised in that the CO2Flash distillation
Tower (T3) is six sections of towers；The H2S flash columns (T4) are six sections of towers；
The outlet conduit (12) of first injector connects the CO2The tower top entrance of III sections of flash column (T3)；The CO2
The outlet at bottom of III sections of flash column (T3) connects IV sections of tower top entrance by the first heat exchange pipeline (27), and described first changes
Hot channel (27) is provided with First Heat Exchanger (H1)；The CO2The outlet at bottom of IV sections of flash column (T3) is by the 8th heat exchange
Pipeline (40) connects V sections of tower top entrance, and the 8th heat exchange pipeline (40) is provided with the 8th heat exchanger (H8)；The CO2Dodge
The outlet at bottom for steaming V sections of tower (T3) is divided into two strands, connects the H by the first connecting pipe (17) respectively2S flash columns (T4)
V sections top entry, the CO is connected by the second heat exchange pipeline (19)2The top entry of VI sections of flash column (T3)；Institute
State the first connecting pipe (17) and be provided with the 5th pump (P5), second heat exchange pipeline (19) is provided with the second heat exchanger (H2)；
The CO2The top exit of III sections, IV sections and V sections of flash column (T3) connects the CO2Product feed channel (31)；
The CO2The outlet at bottom of VI sections of flash column (T3) connects the CO by the 3rd heat exchange pipeline (21)2Flash column (T3)
I sections of top entry, the 3rd heat exchange pipeline (21) is provided with the 3rd heat exchanger (H3)；
The CO2The top exit of I sections of flash column (T3) connects the CO2The lower entrances of V sections of flash column (T3)；It is described
CO2The outlet at bottom of I sections of flash column (T3) connects the CO by the 4th heating pipe (24)2II sections of flash column (T3)
Top entry, the 4th heating pipe (24) is provided with the 4th heater (H4)；
The CO2Top exit connection first injection pipe (28) of II sections and V sections of flash column (T3), the CO2Flash distillation
The outlet at bottom of II sections of tower (T3) connects the master and washes methanol pipeline (4), and the master washes methanol pipeline (4) and is provided with the second pump
And the 5th heat exchanger (H5) (P2)；
The outlet conduit (32) of second injector (Y2) connects the H2The top entry of III sections of S flash columns (T4)；Institute
State H2The top exit of III sections, IV sections and V sections of S flash columns (T4) connects the product feed channel (31), the H2S flash columns
(T4) outlet at bottom of II sections connects the discharge tube (43)；The H2II sections of S flash columns (T4) and VI sections of top
Outlet connection second injection pipe (46)；8th heat exchange pipeline (40) is connected to the H2The VI of S flash columns (T4)
Between the outlet at bottom and I sections of top entry of section, the 8th heat exchange pipeline (40) is provided with the 8th heat exchanger (H8)；It is described
H2The top exit connection H of I sections of S flash columns (T4)2The lower entrances of V sections of S flash columns (T4)；
The H2The outlet at bottom of I sections of S flash columns (T4) connects the H by the 9th heat exchange pipeline (42)2S flash columns (T4)
II sections of top entry, the 9th heat exchange pipeline (42) is provided with the 9th heat exchanger (H9)；The III of H2S flash columns (T4)
The bottom of towe outlet of section connects IV sections of top entry by the 11st heat exchange pipeline (41), and the 11st heat exchange pipeline (41) is provided with
11st heat exchanger (H11)；The H2The outlet at bottom of IV sections of S flash columns (T4) connects V by the tenth heat exchange pipeline (36)
The top entry of section, the tenth heat exchange pipeline (36) is provided with the tenth heat exchanger (H10)；The H2V sections of S flash columns (T4)
Outlet at bottom VI sections of top entry is connected by the 7th heat exchange pipeline (37), the 7th heat exchange pipeline (37) is provided with the
Seven heat exchangers (H7).
5. the CO high according to claim 2 to 4 any claim2The energy-saving gas cleaning unit of the rate of recovery, its feature
It is that the first bypass (29) is also parallel with first connecting pipe (28), first bypass (29) is provided with first gas
Compressor (C1)；
The second bypass (45) is parallel with second connecting pipe (46), second bypass (45) is provided with second gas compressor
(C2)。
6. CO high according to claim 52The energy-saving gas cleaning unit of the rate of recovery, it is characterised in that first spray
Emitter (Y1) and/or second injector (Y2) are aspiration-type sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620580156.6U CN206276196U (en) | 2016-06-15 | 2016-06-15 | A kind of CO high2The energy-saving gas cleaning unit of the rate of recovery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620580156.6U CN206276196U (en) | 2016-06-15 | 2016-06-15 | A kind of CO high2The energy-saving gas cleaning unit of the rate of recovery |
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| Publication Number | Publication Date |
|---|---|
| CN206276196U true CN206276196U (en) | 2017-06-27 |
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ID=59084178
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694292A (en) * | 2017-10-27 | 2018-02-16 | 中石化宁波工程有限公司 | A kind of half lean absorbent renovation process |
| CN110243137A (en) * | 2019-05-22 | 2019-09-17 | 陈剑军 | It is a kind of to use NH3/CO2Cascade refrigeration produces food-class CO2Device and production method |
-
2016
- 2016-06-15 CN CN201620580156.6U patent/CN206276196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107694292A (en) * | 2017-10-27 | 2018-02-16 | 中石化宁波工程有限公司 | A kind of half lean absorbent renovation process |
| CN110243137A (en) * | 2019-05-22 | 2019-09-17 | 陈剑军 | It is a kind of to use NH3/CO2Cascade refrigeration produces food-class CO2Device and production method |
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