CN205965520U - Desorption system of desulfurization vacuum condensation liquid - Google Patents
Desorption system of desulfurization vacuum condensation liquid Download PDFInfo
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- CN205965520U CN205965520U CN201620881193.0U CN201620881193U CN205965520U CN 205965520 U CN205965520 U CN 205965520U CN 201620881193 U CN201620881193 U CN 201620881193U CN 205965520 U CN205965520 U CN 205965520U
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Abstract
The utility model discloses desorption system of desulfurization vacuum condensation liquid belongs to coal gas desulfurization field. The purpose is the gas -liquid mass transfer time that shortens in the regenerator column. Including regenerator column, cooling device, vapour and liquid separator, liquor condensate groove and circulation cistern, sour vapour export, vapour and liquid separator and the cooling device tube coupling of regenerator column, vapour and liquid separator's gas outlet is connected with the vacuum pump, vapour and liquid separator and liquor condensate groove tube coupling, condensation liquid pump and circulation fluid groove tube coupling in the liquor condensate groove, the outlet of circulation hydraulic of regenerator column, circulation fluid import and circulation fluid groove tube coupling, sour vapour export is located the regenerator column top, outlet of circulation hydraulic is located the regenerator column bottom, the circulation fluid import sets up in the lateral wall of regenerator column, and is located the lower part of regenerator column. This desorption system of desulfurization vacuum condensation liquid, prolonged sour vapour in the operation distance of regenerator column, reduced the average flowing speed of sour vapour to prolong the gas -liquid mass transfer time in the regenerator column, reduced the content of vacuum condensation liquid including the potassium component.
Description
Technical field
This utility model belongs to coal gas desulfurization technical field, particularly the desorption system of desulfurized vacuum condensed fluid.
Background technology
Vacuum carbonate desulfurization is the prevailing technology of coke oven gas desulfurization in recent years, and its technological process is：Absorb coal gas
In H2S, HCN and CO2Deng the sulfur removing pregnant solution after sour gas in regenerator, under vacuum, heating condition, sulfur removing pregnant solution
In H2S, HCN and CO2It is desorbed out Deng sour gas and is reprocessed after cooling, the lean solution after desorbing is sent after cooling
Return desulfurizing tower to recycle.The gas phase of regeneration overhead acid vapour consists of：H2O：97.05%, H2S：2.03%, CO2：0.55%,
HCN：0.37%, in the cooling procedure of sour vapour, steam is cooled to liquid, referred to as vacuum condensation liquid.Due to entrained liquid
Effect, in vacuum condensation liquid contain potassium component composition be respectively：K2CO3：6.15g/L, KHCO3：18.23g/L, KHS：
2.88g/L；Similar to the composition of sulfur removing pregnant solution it is therefore necessary to desorbing process is carried out to vacuum condensation liquid.
In the prior art, the mode that vacuum condensation liquid carries out desorbing process is：The vacuum condensation liquid overwhelming majority returns de-
Sulfur rich solution groove, enters the tower top of regenerator together with the sulfur removing pregnant solution producing after desulfurizing tower absorption；The adjusted valve of another part is fixed
Amount controls extraction to remained ammonia system.Vacuum condensation liquid is returned sulfur removing pregnant solution slot part and is entered regeneration together with sulfur removing pregnant solution
Tower, increases the feed loading of regenerator, increases the gas speed of regeneration tower acid vapour, when shortening the gas-liquid mass transfer in regenerator
Between, reduce the desorption efficiency of regenerator；And increase the entrained liquid of sour vapour further, vacuum condensation liquid containing potassium component
Content is high, produces the KOH loss amount caused by remained ammonia system and increases, increases desulphurization system operating cost.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of desorption system of desulfurized vacuum condensed fluid, in order to contract
The gas-liquid mass transfer time in short regenerator.
The technical solution adopted in the utility model is：The desorption system of desulfurized vacuum condensed fluid, including regenerator, cooling dress
Put, gas-liquid separator, condensation liquid bath and circulation liquid bath；
Described regenerator is provided with circulation fluid outlet, circulation fluid import, sour vapor outlet and vaporizer；
Described gas-liquid separator is provided with condensate inlet, gas outlet and condensate outlet；
The condensate pump that described condensation liquid bath is provided with the charging aperture stretching in condensation liquid bath and is located in condensation liquid bath；
Described circulation liquid bath is provided with condensed fluid inlet, circulation fluid inlet and circulation fluid liquid outlet；
The sour vapor outlet of described regenerator is connected with the entrance pipe of chiller；The outlet of chiller and gas-liquid separation
The condensate inlet pipeline of device connects；It is connected with vacuum pump in the gas outlet of described gas-liquid separator；Described gas-liquid separator
Condensate outlet with condensation liquid bath charging aperture pipeline be connected；Described condensate pump and the condensed fluid inlet pipe circulating liquid bath
Road connects；The circulation fluid outlet of described regenerator is connected with the condensed fluid inlet pipeline of circulation liquid bath；The following of described regenerator
Ring liquid import is connected with the circulation fluid liquid outlet pipeline of circulation liquid bath；Described acid vapor outlet is located at regenerator top；Described circulation
Liquid outlet is located at regenerator bottom；Described circulation fluid import is arranged at the side wall of regenerator, and is located at the bottom of regenerator.
Further, described vaporizer is located between circulation fluid import and circulation fluid outlet.
Further, the vertical dimension between described vaporizer and circulation fluid import is less than between vaporizer and circulation fluid outlet
Vertical dimension.
Further, on the pipeline connecting the circulation fluid outlet of described regenerator and the condensed fluid inlet of circulation liquid bath
Having heaters and recycle liquid pump are installed.
Further, described recycle liquid pump is located between heater and regenerator；Described heater is located at circulation liquid bath
Top.
Further, on the pipeline of the circulation fluid import connecting described regenerator and the circulation fluid liquid outlet of circulation liquid bath
Feed pump is installed.
The beneficial effects of the utility model are：The desorption system of this desulfurized vacuum condensed fluid, sour vapor outlet is located at regenerator
Top, described circulation fluid outlet is located at regenerator bottom, is easy to sour vapour and separates with desulphurization circulating liquid, sour vapour rises to regeneration overhead
End is extracted out, and desulphurization circulating liquid is dirty to be flowed out by regenerator bottom.And, described circulation fluid import is arranged at the side wall of regenerator, and
Bottom positioned at regenerator.Because circulation fluid flows to regenerator bottom direction, the sour vapour that circulation fluid desorbs is just by regenerating
The bottom of tower is run toward the top of regenerator, and the distance of operation is extended；And, the sour vapour concentration class of regenerator bottom is far little
In the sour vapour concentration class on regenerator top, under sour vapour percussion, the gas flow rate on regenerator top is much larger than raw tower bottom
Gas flow rate；In the case that the distance prolongation running, gas mean flow rate reduce, the gas-liquid mass transfer time in regenerator prolongs
Long, the desorption efficiency of regenerator is improved；And reduce the entrained liquid of sour vapour, the content containing potassium component of vacuum condensation liquid
Reduce.
Brief description
Fig. 1 is this utility model structural representation.
In figure, regenerator 1, circulation fluid outlet 101, circulation fluid import 102, vaporizer 103, sour vapor outlet 104, cooling dress
Put 2, gas-liquid separator 3, condensate inlet 301, gas outlet 302, condensate outlet 303, condensation liquid bath 4, charging aperture 401,
Condensate pump 402, circulation liquid bath 5, condensed fluid inlet 501, circulation fluid inlet 502, circulation fluid liquid outlet 503, heater
6th, vacuum pump 7, recycle liquid pump 8, feed pump 9.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described further as follows：
The desorption system of desulfurized vacuum condensed fluid, as shown in figure 1, include regenerator 1, chiller 2, gas-liquid separator 3,
Condensation liquid bath 4 and circulation liquid bath 5；
Described regenerator 1 is provided with circulation fluid outlet 101, circulation fluid import 102, sour vapor outlet 104 and vaporizer 103；
Described gas-liquid separator 3 is provided with condensate inlet 301, gas outlet 302 and condensate outlet 303；
The condensation that described condensation liquid bath 4 is provided with the charging aperture 401 stretching in condensation liquid bath 4 and is located in condensation liquid bath 4
Liquid pump 402；
Described circulation liquid bath 5 is provided with condensed fluid inlet 501, circulation fluid inlet 502 and circulation fluid liquid outlet 503；
The sour vapor outlet 104 of described regenerator 1 is connected with the entrance pipe of chiller 2；The outlet of chiller 2 and gas
Condensate inlet 301 pipeline of liquid/gas separator 3 connects；It is connected with vacuum pump 7 in the gas outlet 302 of described gas-liquid separator 3；
The condensate outlet 303 of described gas-liquid separator 3 is connected with charging aperture 401 pipeline of condensation liquid bath 4；Described condensate pump 402
It is connected with condensed fluid inlet 501 pipeline of circulation liquid bath 5；The circulation fluid outlet 101 of described regenerator 1 and circulation liquid bath 5
Condensed fluid inlet 501 pipeline connects；The circulation fluid import 102 of described regenerator 1 and the circulation fluid liquid outlet of circulation liquid bath 5
503 pipelines connect；Described acid vapor outlet 104 is located at regenerator 1 top；Described circulation fluid outlet 101 is located at regenerator 1 bottom；
Described circulation fluid import 102 is arranged at the side wall of regenerator 1, and is located at the bottom of regenerator 1.
During work, vacuum pump 7 provides vacuum condition for regenerator 1, and by the sour vapour in regenerator 1 from sour vapor outlet 104
Extract out, form condensed fluid after cooled device 2 cooling, condensed fluid carries out separating in gas-liquid separator 3, the sour gas isolated
Extract out through gas outlet 302, remaining condensed fluid flows into condensation liquid bath 4 from condensate outlet 303, condensed liquid pump 402 part is adopted
Go out to remained ammonia system, remainder delivers to circulation liquid bath 5, the desulphurization circulating with circulation fluid outlet 101 extraction of regenerator 1
Liquid, after circulation liquid bath 5 mixing, delivers to the charging vaporizer 103 of regenerator 1.Mixed solution under vacuum, due to
Pressure reduces suddenly and carries out flash distillation, forms sour vapour and desulphurization circulating liquid, so circulates.
The desorption system of this desulfurized vacuum condensed fluid, sour vapor outlet 104 is located at regenerator 1 top, described circulation fluid outlet
101 are located at regenerator 1 bottom, are easy to sour vapour and separate with desulphurization circulating liquid, and sour vapour rises to regenerator 1 top and extracts out, and desulfurization follows
Ring liquid is dirty to be flowed out by regenerator 1 bottom.And, described circulation fluid import 102 is arranged at the side wall of regenerator 1, and is located at regeneration
The bottom of tower 1.Because circulation fluid flows to regenerator 1 bottom direction, the sour vapour that circulation fluid desorbs is just by under regenerator 1
Portion runs toward the top of regenerator 1, and the distance of operation is extended；And, the sour vapour concentration class of regenerator 1 bottom is much smaller than again
The sour vapour concentration class on raw tower 1 top, under sour vapour percussion, the gas flow rate on regenerator 1 top is much larger than raw tower 1 bottom
Gas flow rate；In the case that the distance prolongation running, gas mean flow rate reduce, the gas-liquid mass transfer time in regenerator 1 prolongs
Long, the desorption efficiency of regenerator 1 is improved；And reduce the entrained liquid of sour vapour, the containing containing potassium component of vacuum condensation liquid
Amount reduces.
Preferably, described vaporizer 103 is located between circulation fluid import 102 and circulation fluid outlet 101.Due to circulation fluid
Flow direction is to circulation fluid import 102 to circulation fluid outlet 101, therefore, vaporizer 103 is gone out with circulation fluid positioned at circulation fluid import 102
Between mouth 101, it is more beneficial for circulation fluid is carried out flash distillation, the effect suctioning out sour gas is more preferable.
Because circulation fluid enters after regenerator 1 through circulation fluid import 102, it abruptly enters vacuum ring by non-vacuum environment
Border, pressure suddenly reduces and carries out flash distillation in the presence of vaporizer 103, and in the moment of pressure abrupt change, circulation fluid more leans on
Nearly vaporizer 103 is more conducive to flash distillation, and the moment of pressure abrupt change occurs the circulation fluid import 102 in regenerator 1.Therefore,
Preferably, the vertical dimension between described vaporizer 103 and circulation fluid import 102 is less than between vaporizer 103 and circulation fluid outlet 101
Vertical dimension.
Preferably, in the circulation fluid outlet 101 connecting described regenerator 1 and the condensed fluid inlet 501 of circulation liquid bath 5
Having heaters 6 and recycle liquid pump 8 are installed on pipeline.Heater 6 is used for following to circulation fluid outlet 101 outflow by regenerator 1
Ring liquid is preheated, and is sufficiently mixed beneficial to the condensed fluid entering circulation liquid bath 5 with condensed liquid inlet 501.Recycle liquid pump 8 carries
For power, the circulation fluid in regenerator 1 is extracted out.
If recycle liquid pump 8 can also be located between heater 6 and circulation liquid bath 5, then, when starting recycle liquid pump 8, then
Circulation fluid in raw tower 1 rapidly enters circulation liquid bath 5, shorter in heater 6 residence time, may not reach uniform preheating
Purpose.Therefore it is preferred that described recycle liquid pump 8 is located between heater 6 and regenerator 1；Described heater 6 is located at circulation liquid bath 5
Top.Heater 6 is located at the top of circulation liquid bath 5, is conducive to the circulation fluid in heater 6 naturally to flow into circulation liquid bath 5.
Preferably, in the circulation fluid import 102 connecting described regenerator 1 and the circulation fluid liquid outlet 503 of circulation liquid bath 5
Feed pump 9 is provided with pipeline.Feed pump 9 pressurizes and for the circulation fluid in circulation liquid bath 5 to be transported to regenerator 1.
Claims (6)
1. the desorption system of desulfurized vacuum condensed fluid, including regenerator (1), chiller (2), gas-liquid separator (3), condensed fluid
Groove (4) and circulation liquid bath (5)；
Described regenerator (1) is provided with circulation fluid outlet (101), circulation fluid import (102), sour vapor outlet (104) and vaporizer
(103)；
Described gas-liquid separator (3) is provided with condensate inlet (301), gas outlet (302) and condensate outlet (303)；
Described condensation liquid bath (4) is provided with the charging aperture (401) stretching in condensation liquid bath (4) and is located in condensation liquid bath (4)
Condensate pump (402)；
Described circulation liquid bath (5) is provided with condensed fluid inlet (501), circulation fluid inlet (502) and circulation fluid liquid outlet
(503)；
The sour vapor outlet (104) of described regenerator (1) is connected with the entrance pipe of chiller (2)；The outlet of chiller (2)
It is connected with condensate inlet (301) pipeline of gas-liquid separator (3)；Gas outlet (302) in described gas-liquid separator (3) is even
It is connected to vacuum pump (7)；The condensate outlet (303) of described gas-liquid separator (3) and charging aperture (401) pipe condensing liquid bath (4)
Road connects；Described condensate pump (402) is connected with condensed fluid inlet (501) pipeline of circulation liquid bath (5)；Described regenerator
(1) circulation fluid outlet (101) is connected with condensed fluid inlet (501) pipeline of circulation liquid bath (5)；Described regenerator (1)
Circulation fluid import (102) is connected with circulation fluid liquid outlet (503) pipeline of circulation liquid bath (5)；It is characterized in that：Described acid vapour goes out
Mouth (104) is located at regenerator (1) top；Described circulation fluid outlet (101) is located at regenerator (1) bottom；Described circulation fluid import
(102) it is arranged at the side wall of regenerator (1), and be located at the bottom of regenerator (1).
2. desulfurized vacuum condensed fluid as claimed in claim 1 desorption system it is characterised in that：Described vaporizer (103) position
Between circulation fluid import (102) and circulation fluid outlet (101).
3. desulfurized vacuum condensed fluid as claimed in claim 2 desorption system it is characterised in that：Described vaporizer (103) with
Vertical dimension between circulation fluid import (102) is less than the vertical dimension between vaporizer (103) and circulation fluid outlet (101).
4. the desulfurized vacuum condensed fluid as described in claim 1-3 any one claim desorption system it is characterised in that：
On the pipeline connecting circulation fluid outlet (101) of described regenerator (1) and the condensed fluid inlet (501) of circulation liquid bath (5)
Having heaters (6) and recycle liquid pump (8) are installed.
5. desulfurized vacuum condensed fluid as claimed in claim 4 desorption system it is characterised in that：Described recycle liquid pump (8) position
Between heater (6) and regenerator (1)；Described heater (6) is located at the top of circulation liquid bath (5).
6. the desulfurized vacuum condensed fluid as described in claim 1-3 any one claim desorption system it is characterised in that：
On the pipeline of the circulation fluid import (102) connecting described regenerator (1) and the circulation fluid liquid outlet (503) of circulation liquid bath (5)
Feed pump (9) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881193.0U CN205965520U (en) | 2016-08-15 | 2016-08-15 | Desorption system of desulfurization vacuum condensation liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620881193.0U CN205965520U (en) | 2016-08-15 | 2016-08-15 | Desorption system of desulfurization vacuum condensation liquid |
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| Publication Number | Publication Date |
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| CN205965520U true CN205965520U (en) | 2017-02-22 |
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| CN201620881193.0U Active CN205965520U (en) | 2016-08-15 | 2016-08-15 | Desorption system of desulfurization vacuum condensation liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905521A (en) * | 2020-08-18 | 2020-11-10 | 宁波中科远东催化工程技术有限公司 | Coke oven gas desulfurization process and system |
-
2016
- 2016-08-15 CN CN201620881193.0U patent/CN205965520U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905521A (en) * | 2020-08-18 | 2020-11-10 | 宁波中科远东催化工程技术有限公司 | Coke oven gas desulfurization process and system |
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