CN107460014A - A kind of selexol process process unit - Google Patents
A kind of selexol process process unit Download PDFInfo
- Publication number
- CN107460014A CN107460014A CN201710366168.8A CN201710366168A CN107460014A CN 107460014 A CN107460014 A CN 107460014A CN 201710366168 A CN201710366168 A CN 201710366168A CN 107460014 A CN107460014 A CN 107460014A
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- Prior art keywords
- line
- pipeline
- ball valve
- valve
- gas
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- 238000000034 method Methods 0.000 title claims abstract description 67
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 70
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000011593 sulfur Substances 0.000 claims abstract description 50
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 50
- 238000010521 absorption reaction Methods 0.000 claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 35
- 238000001914 filtration Methods 0.000 claims abstract description 35
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 34
- 238000011010 flushing procedure Methods 0.000 claims abstract description 20
- 238000010079 rubber tapping Methods 0.000 claims description 64
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims 2
- 238000006477 desulfuration reaction Methods 0.000 abstract description 14
- 239000006260 foam Substances 0.000 abstract description 9
- 230000023556 desulfurization Effects 0.000 abstract description 3
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 28
- 239000000243 solution Substances 0.000 description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- 239000005864 Sulphur Substances 0.000 description 9
- 239000003345 natural gas Substances 0.000 description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 206010020852 Hypertonia Diseases 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention belongs to selexol process technical field, specifically, it is related to a kind of selexol process process unit, including the first gas-liquid separator, absorption tower, the second gas-liquid separator, foam-catching tank, regenerator, sulfur filtration pond, lean pump, flushing pump, air blower, wherein air blower and the first motor are electrically connected with, and lean pump and the second motor are electrically connected with, and flushing pump and the 3rd motor are electrically connected with.After sulfurous gas enters absorption tower, the gas after desulfurization is sent in regenerator after the second gas-liquid separator；Caused sulfur-bearing foam delivers to desulfurizing agent rich solution in regenerator after foam-catching tank precipitates；Desulfurizing agent rich solution in absorption tower is then sent directly in regenerator, selexol process process unit provided by the invention to the processed gas in absorption tower, sulfur-bearing foam, desulfurizing agent rich solution by taking different handling process, the clogging for solving selexol process process unit.
Description
Technical field
The present invention relates to a kind of selexol process process unit, belong to selexol process technical field.
Background technology
The natural gas of reservoir extraction contains some sour gas generally in addition to containing vapor, toward contact, these sour gas
Body is usually the gaseous impurities such as hydrogen sulfide, mercaptan, thioether, and wherein hydrogen sulfide is the maximum acidic components of natural gas Poisoning.My god
Hydrogen sulfide content becomes with geographical diversity in right gas, and China Main Natural Gas field belongs to high sulfur-containing natural gas (GB17820-
2012《Natural gas》Mandatory national standards provide, in second category of commodities natural gas H2S contents it is necessary≤20mg/m3.Class I goods
In natural gas H2S contents it is necessary≤6mg/m3), hydrogen sulfide not only has very strong toxicity, while also has very strong corrosivity,
Gas transmission line is easily done great damage, therefore desulfurization process must all be carried out to the sulfur-containing gas of reservoir extraction.
Currently used selexol process process unit, the problem that pipeline or device are blocked all be present.
The content of the invention
The invention provides a kind of selexol process process unit, it is intended that solving on present in prior art
State problem.
Technical scheme is as follows：
The invention provides a kind of selexol process process unit, including the first gas-liquid separator, absorption tower, the second gas-liquid
Separator, foam-catching tank, regenerator, sulfur filtration pond, lean pump, flushing pump, air blower；
First gas-liquid separator is provided with sour gas admission line, the first outlet line and the first tapping line, and first goes out
Gas pipeline is provided with the first blowdown line, and the first outlet line is connected with absorption tower；
Absorption tower is provided with the first feed liquor pipeline, the second feed liquor pipeline, the 3rd feed liquor pipeline, the second outlet line, second
Tapping line, the first overflow launder is additionally provided with absorption tower in addition, and corresponding first overflow launder feed tube is provided with absorption tower
Line and the first overflow launder drain pipe line, wherein the first feed liquor pipeline and the first outlet line are connected, the first feed liquor pipeline, second enter
Liquid pipe line and the first overflow launder feed liquor pipeline are connected with re-injection pipeline respectively, the 3rd feed liquor pipeline and the first overflow launder drain pipe line
It is connected respectively with foam-catching tank, the second outlet line and the second gas-liquid separator are connected, and the second outlet line is let out provided with second
Pressure pipeline, the second blowdown line and the first blowdown line are connected, and the second tapping line is connected with regenerator；
Second gas-liquid separator is provided with the 3rd outlet line, the 3rd tapping line and the first air inlet, the 3rd escape pipe
Line is provided with the 3rd blowdown line, and the 3rd blowdown line and the first blowdown line are connected, and the 3rd tapping line is connected with regenerator,
First air inlet and the second outlet line are connected；
Foam-catching tank is provided with the 4th outlet line, the 4th tapping line, the first inlet and the first rinse mouth, the 4th outlet
Pipeline and the 3rd feed liquor pipeline are connected, and the 4th tapping line is connected with regenerator and sulfur filtration pond respectively, the first inlet and
First overflow launder drain pipe line is connected, and the first rinse mouth is connected by clean-up line with sulfur filtration pond；
Regenerator is provided with air inlet pipeline, the 5th outlet line, the 5th tapping line, the second inlet and the 3rd and entered
Liquid mouth, is additionally provided with the second overflow launder in addition in regenerator, and is provided with regenerator corresponding second overflow launder inlet and the
Two overflow launder drain pipe lines, air inlet pipeline are connected with air blower, and air inlet pipeline and the second tapping line are connected, drum
Blower fan and the first motor are electrically connected with, and the 5th tapping line and the 4th tapping line are connected, the second inlet and the 3rd discharging tube
Line is connected, and the 3rd inlet and the 4th tapping line are connected, and the second overflow launder inlet is connected with clean-up line, the second overflow launder
Drain pipe line is connected with sulfur filtration pond；
Sulfur filtration pond is provided with the 4th inlet, the 5th inlet, filter and liquid-accumulating trough, the 4th inlet and the 4th
Tapping line is connected, and the 5th inlet and the second overflow launder drain pipe line are connected, liquid-accumulating trough respectively with re-injection pipeline and flush pipe
Line is connected；
Re-injection pipeline is provided with lean pump, and lean pump and the second motor are electrically connected with；
Clean-up line is provided with flushing pump, and flushing pump and the 3rd motor are electrically connected with.
In embodiment provided by the invention, level gauging pipeline is additionally provided with above-mentioned first gas-liquid separator, sulfur-bearing enters
The first ball valve is additionally provided with gas pipeline, the first outlet line is provided with the second ball valve, hydraulic pressure is sequentially provided with the first tapping line
Control loop, the 3rd ball valve, first manual blowoff valve, the first blowdown line are provided with pressure release loop；
Level gauging pipeline includes the 4th ball valve, liquid level gauge and the 5th ball valve being sequentially connected in series；
Hydraulic control circuit includes the 6th ball valve, hydraulic control valve, the 7th ball valve, stop valve and the second manual blowdown valve,
It is connected in parallel after wherein the 6th ball valve, hydraulic control valve and the 7th ball valve are sequentially connected in series and with stop valve, second arranges manually
Dirty valve is located between the 6th ball valve and hydraulic control valve；
Pressure release loop includes three pipelines in parallel, and first article of pipeline is provided with the 8th ball valve, rupture disk and the 9th ball valve, the
Two articles of pipelines are provided with the tenth ball valve, safety valve and the 11st ball valve, and Article 3 pipeline is provided with the 12nd ball valve, and rupture disk
It is provided with pressometer.
In embodiment provided by the invention, level gauging pipeline, and the first feed liquor pipeline are additionally provided with above-mentioned absorption tower
The 13rd ball valve is provided with, the second feed liquor pipeline is provided with the 14th ball valve, the 3rd feed liquor pipeline is provided with the 15th ball valve, the
Two outlet lines are provided with the 16th ball valve, and the second blowdown line is provided with pressure release loop, and the second tapping line is provided with the 3rd
Manual blowdown valve and hydraulic control circuit, the first overflow launder feed liquor pipeline are provided with the 17th ball valve, the first overflow launder drain pipe
Line is provided with the 18th ball valve.
In embodiment provided by the invention, above-mentioned second gas-liquid separator is provided with level gauging pipeline, the 3rd outlet
Pipeline is provided with the 19th ball valve, and the 3rd tapping line returns provided with the 4th manual blowdown valve, the 20th ball valve and hydraulic control
Road, and the 3rd blowdown line is provided with pressure release loop.
In embodiment provided by the invention, above-mentioned foam-catching tank is provided with level gauging pipeline, is set on the 4th outlet line
There is the 21st ball valve, the 4th tapping line is divided into regenerator connecting pipeline and sulfur filtration pond connecting pipeline again, and regenerator connects
Adapter line is provided with the 22nd ball valve and hydraulic control circuit, and sulfur filtration pond connecting pipeline is provided with the 23rd ball valve,
4th tapping line is provided with the 5th manual blowdown valve, and clean-up line is provided with check-valves.
In embodiment provided by the invention, above-mentioned regenerator is provided with level gauging pipeline, sulfur filtration pond connecting tube
Line is provided with the 24th ball valve and hydraulic control circuit, and overflow launder inlet is connected with clean-up line, and clean-up line is provided with
25th ball valve.
In embodiment provided by the invention, water charge line and plus desulfurizing agent pipeline are additionally provided with above-mentioned sulfur filtration pond.
In embodiment provided by the invention, the liquid in liquid level gauge and hydraulic control circuit in above-mentioned level gauging pipeline
Pressure control valve is connected, and after the liquid level that liquid level gauge measures reaches the liquid level of setting, hydraulic control valve is from closure state
Switch to opening.
In embodiment provided by the invention, liquid desulfurizing agent is provided with absorption tower.
Beneficial effects of the present invention are：Sulfurous gas enters absorption tower and desulfurizing agent reacts and carries out desulfuration operations：It is de-
Escaping gas enters the second gas-liquid separator in sulphur operation；Caused sulfur-bearing foam flows into foam-catching tank；The desulfurizing agent of generation is rich
Liquid is then sent to regenerator, and selexol process process unit provided by the invention passes through to occurring during the desulfuration operations of absorption tower
Gas, sulfur-bearing foam, desulfurizing agent rich solution take different handling process respectively, solve in selexol process technical process
In the blockage problem that occurs due to sulfur deposition in each device and related pipeline.In addition, selexol process provided by the invention
Process unit is also specially provided with flushing pump and clean-up line, and foam-catching tank, regenerator and connecting pipeline therebetween can be carried out
Rinse, further improve the anti-clogging of the selexol process process unit.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of embodiment of the present invention
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not to be seen as
It is the restriction to scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other related accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 selexol process process unit structure charts provided in an embodiment of the present invention；
Fig. 2 the first structure of gas liquid separator figures provided in an embodiment of the present invention；
Fig. 3 level gauging line construction figures provided in an embodiment of the present invention；
Fig. 4 hydraulic control circuit structure charts provided in an embodiment of the present invention；
Fig. 5 pressure release loop structure figures provided in an embodiment of the present invention；
Fig. 6 absorption tower structure charts provided in an embodiment of the present invention；
Fig. 7 the second structure of gas liquid separator figures provided in an embodiment of the present invention；
Fig. 8 foam-catching tank structure charts provided in an embodiment of the present invention；
Fig. 9 regenerator structure charts provided in an embodiment of the present invention；
Figure 10 sulfur filtration pool structure figures provided in an embodiment of the present invention.
Shown in figure：100- selexol process process units；The gas-liquid separators of 1- first；10- sour gas admission lines；
The ball valves of 101- first；The outlet lines of 11- first；The ball valves of 110- second；The tapping lines of 12- first；The ball valves of 120- the 3rd；122-
One manual blowdown valve；The blowdown lines of 13- first；2- absorption towers；20- the first feed liquor pipelines；The ball valves of 200- the 13rd；21- second
Feed liquor pipeline；The ball valves of 210- the 14th；The feed liquor pipelines of 22- the 3rd；The ball valves of 220- the 15th；The outlet lines of 23- second；230-
16 ball valves；The tapping lines of 24- second；The manual blowdown valves of 240- the 3rd；The overflow launders of 25- first；26- the first overflow launder feed tubes
Line；The ball valves of 260- the 17th；27- the first overflow launder drain pipe lines；The ball valves of 270- the 18th；The blowdown lines of 28- second；3- second
Gas-liquid separator；The outlet lines of 30- the 3rd；The ball valves of 300- the 19th；The tapping lines of 31- the 3rd；The ball valves of 310- the 20th；311-
4th manual blowdown valve；The air inlets of 32- first；The blowdown lines of 33- the 3rd；4- foam-catching tanks；The outlet lines of 40- the 4th；400-
21 ball valves；The tapping lines of 41- the 4th；410- regenerator connecting pipelines；412- sulfur filtrations pond connecting tube；413- the 20th
Two ball valves；The ball valves of 414- the 23rd；The manual blowdown valves of 415- the 5th；The ball valves of 416- the 24th；The inlets of 42- first；43-
First rinse mouth；5- regenerators；50- air inlet pipelines；The outlet lines of 51- the 5th；The tapping lines of 52- the 5th；53- second enters
Liquid mouth；The inlets of 54- the 3rd；The overflow launders of 55- second；56- the second overflow launder inlets；57- the second overflow launder drain pipe lines；
58- air blowers；The motors of 59- first；6- sulfur filtrations pond；The inlets of 60- the 4th；The inlets of 61- the 5th；62- filters；63-
Liquid-accumulating trough；64- water charge lines；65- adds desulfurizing agent pipeline；7- re-injection pipelines；70- lean pumps；The motors of 71- second；8- flush pipes
Line；80- flushing pumps；The motors of 81- the 3rd；82- check-valves；The ball valves of 83- the 25th；14- level gauging pipelines；The balls of 140- the 4th
Valve；142- liquid level gauges；The ball valves of 144- the 5th；15- hydraulic control circuits；The ball valves of 150- the 6th；151- hydraulic control valves；152-
Seven ball valves；153- stop valves；The manual blowdown valves of 154- second；16- pressure releases loop；The ball valves of 160- the 8th；161- rupture disks；162-
9th ball valve；The ball valves of 163- the tenth；164- safety valves；The ball valves of 165- the 11st；The ball valves of 166- the 12nd；167- pressure measxurements
Meter.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
To make the purpose, technical scheme and advantage of embodiment of the present invention clearer, implement below in conjunction with the present invention
Accompanying drawing in mode, the technical scheme in embodiment of the present invention is clearly and completely described, it is clear that described reality
The mode of applying is a part of embodiment of the present invention, rather than whole embodiments.Therefore, the sheet to providing in the accompanying drawings below
The detailed description of the embodiment of invention is not intended to limit the scope of claimed invention, but is merely representative of the present invention
Selected embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work
Under the premise of all other embodiment for being obtained, belong to the scope of protection of the invention.
In the description of the invention, it is to be understood that the term of indicating position or position relationship is based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified equipment
Or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Embodiment：
A kind of selexol process process unit 100, including the first gas-liquid separator 1, absorption tower 2, the second gas-liquid separator
3rd, foam-catching tank 4, regenerator 5, sulfur filtration pond 6, lean pump 70, flushing pump 80, air blower 58.
First gas-liquid separator 1 is provided with sour gas admission line 10, the first outlet line 11 and the first tapping line 12,
First outlet line 11 is provided with the first blowdown line 13, and the first outlet line 11 is connected with absorption tower 2.
Absorption tower 2 is provided with the first feed liquor pipeline 20, the second feed liquor pipeline 21, the 3rd feed liquor pipeline 22, the second escape pipe
Line 23, the second tapping line 24, are additionally provided with the first overflow launder 25 in addition in absorption tower 2, and are provided with absorption tower 2 corresponding the
One overflow launder feed liquor pipeline 26 and the first overflow launder drain pipe line 27, wherein the first feed liquor pipeline 20 and the phase of the first outlet line 11
Even, the first feed liquor pipeline 20, the second feed liquor pipeline 21 and the first overflow launder feed liquor pipeline 26 are connected with re-injection pipeline 7 respectively, the
Three feed liquor pipelines 22 and the first overflow launder drain pipe line 27 are connected with foam-catching tank 4 respectively, the second outlet line 23 and the second gas-liquid
Separator 3 is connected, and the second outlet line 23 is provided with the second blowdown line 28, the second blowdown line 28 and the first blowdown line
13 are connected, and the second tapping line 24 is connected with regenerator 5.
Specifically, the first feed liquor pipeline 20 is used to absorb the sulfide in sulfurous gas；Second feed liquor pipeline 21 is used to tie up
Hold the liquid level in absorption tower 2；First overflow launder feed liquor pipeline 26 is used to rinse through the desulfurizing agent lean solution in re-injection pipeline 7
First overflow launder 25；First overflow launder drain pipe line 27 is used to deliver to sulfur-bearing foam in foam-catching tank 4, and containing in foam-catching tank 4
Sulphur gas is then reentered in absorption tower 2 through the 3rd feed liquor pipeline 22.
Second gas-liquid separator 3 is provided with the 3rd outlet line 30, the 3rd tapping line 31 and the first air inlet 32, and the 3rd
Outlet line 30 is provided with the 3rd blowdown line 33, and the 3rd blowdown line 33 is connected with the first blowdown line 13, the 3rd discharging tube
Line 31 is connected with regenerator 5, and the first air inlet 32 is connected with the second outlet line 23.
Foam-catching tank 4 is provided with the 4th outlet line 40, the 4th tapping line 41, the first inlet 42 and the first rinse mouth
43, the 4th outlet line 40 is connected with the 3rd feed liquor pipeline 22, the 4th tapping line 41 respectively with regenerator 5 and sulfur filtration pond
6 are connected, and the first inlet 42 is connected with the first overflow launder drain pipe line 27, and the first rinse mouth 43 passes through clean-up line 8 and sulphur
Filtering ponds 6 are connected.
Specifically, the first overflow launder drain pipe line 27 is used to enter the sulfurous gas re-injection in foam-catching tank 4 into absorption tower 2
Row desulfuration operations.
Regenerator 5 is provided with air inlet pipeline 50, the 5th outlet line 51, the 5th tapping line 52, the second inlet
53 and the 3rd inlet 54, the second overflow launder 55 is additionally provided with regenerator 5 in addition, and corresponding second is provided with regenerator 5
The overflow launder drain pipe line 57 of overflow launder inlet 56 and second, air inlet pipeline 50 is connected with air blower 58, and air inlet
Pipeline 50 is connected with the second tapping line 24, and the motor 59 of air blower 58 and first is electrically connected with, the 5th tapping line 52 and the 4th
Tapping line 41 is connected, and the second inlet 53 is connected with the 3rd tapping line 31, the 3rd inlet 54 and the 4th tapping line 41
It is connected, the second overflow launder inlet 56 is connected with clean-up line 8, and the second overflow launder drain pipe line 57 is connected with sulfur filtration pond 6.
Specifically, the first motor 59 rotates for belt driven blower 58.
Sulfur filtration pond 6 is provided with the 4th inlet 60, the 5th inlet 61, filter 62 and liquid-accumulating trough 63, and the 4th enters
Liquid mouth 60 is connected with the 4th tapping line 41, and the 5th inlet 61 is connected with the second overflow launder drain pipe line 57, and liquid-accumulating trough 63 divides
It is not connected with re-injection pipeline 7 and clean-up line 8,
Re-injection pipeline 7 is provided with lean pump 70, and the motor 71 of lean pump 70 and second is electrically connected with, and the second motor 71 is used for band
Dynamic lean pump 70 works.
Clean-up line 8 is provided with flushing pump 80, and the motor 81 of flushing pump 80 and the 3rd is electrically connected with, and the 3rd motor 81 is used for band
Dynamic flushing pump 80 works.
In the present embodiment, level gauging pipeline 14 is additionally provided with the first gas-liquid separator 1, on sour gas admission line 10
The first ball valve 101 is additionally provided with, the first outlet line 11 is provided with the second ball valve 110, liquid is sequentially provided with the first tapping line 12
Control loop 15, the 3rd ball valve 120, first manual blowoff valve 122 are pressed, the first blowdown line 13 is provided with pressure release loop 16.
Specifically, above-mentioned first ball valve 101 is normally open valve, when needing to carry out separating operation, the first ball valve 101 is opened,
Sulfur-containing gas are allowed to enter through sour gas admission line 10 in the first gas-liquid separator 1；Second ball valve 110 is normally open valve, is used for
Gas in first gas-liquid separator 1 is entered in absorption tower 2；3rd ball valve 120 is normally open valve；First manual blowoff valve 122
For normally close valve.
In the present embodiment, above-mentioned level gauging pipeline 14 includes the 4th ball valve 140, the liquid level gauge being sequentially connected in series
142 and the 5th ball valve 144；Hydraulic control circuit 15 includes the 6th ball valve 150, hydraulic control valve 151, the 7th ball valve 152, cut-off
The manual blowdown valve 154 of valve 153 and second, wherein the 6th ball valve 150, hydraulic control valve 151 and the company of being sequentially connected in series of the 7th ball valve 152
Be connected in parallel after connecing and with stop valve 153, the second manual blowdown valve 154 located at the 6th ball valve 150 and hydraulic control valve 151 it
Between, wherein the 6th ball valve 150, the 7th ball valve 152 are normally open valve, hydraulic control valve 151 is controlled by liquid level gauge 142, stop valve 153
For manually opened valve；Second manual blowdown valve 154 is normally close valve.Pressure release loop 16 includes three pipelines in parallel, first pipeline
The 8th ball valve 160, the ball valve 162 of rupture disk 161 and the 9th are provided with, Article 2 pipeline is provided with the tenth ball valve 163, safety valve
164 and the 11st ball valve 165, Article 3 pipeline is provided with the 12nd ball valve 166, and rupture disk 161 is provided with pressometer
167。
Specifically, in the present embodiment, in above-mentioned level gauging pipeline 14 in liquid level gauge 142 and hydraulic control circuit 15
Hydraulic control valve 151 is connected, and after the liquid level that liquid level gauge 142 measures reaches setting height, hydraulic control valve 151 is beaten
Open, liquid is circulated through the pipeline where hydraulic control valve 151.
Specifically, in the present embodiment, the 12nd ball valve 166 in above-mentioned pressure release loop 16 is normally close valve, other ball valves
It is normally open valve, when air pressure is excessive in the place outlet line of pressure release loop 16, rupture disk 161 and safety valve 164 all will be at them
Rupture occurs after the maximum pressure value of setting respectively or opens so that the gas in outlet line is discharged through blowdown line, is prevented
Only explosion occurs for device and related pipeline caused by pressure is excessive.
In the present embodiment, level gauging pipeline 14 also is provided with absorption tower 2, and the first feed liquor pipeline 20 is provided with the tenth
Three ball valves 200, the second feed liquor pipeline 21 is provided with the 14th ball valve 210, the 3rd feed liquor pipeline 22 is provided with the 15th ball valve
220, the second outlet line 23 is provided with the 16th ball valve 230, and the second blowdown line 28 is provided with pressure release loop 16, the second discharge opeing
Pipeline 24 is provided with the 3rd manual blowdown valve 240 and hydraulic control circuit 15, and the first overflow launder feed liquor pipeline 26 is provided with the tenth
Seven ball valves 260, the first overflow launder drain pipe line 27 are provided with the 18th ball valve 270.
Specifically, the 13rd ball valve 200 is normally open valve, the desulfurizing agent lean solution in sulfur filtration pond 6 passes through the 13rd ball valve
200 enter in absorption tower 2；14th ball valve 210, the 17th ball valve 260 and the 18th ball valve 270 are normally close valve, main after unlatching
It is used to clean absorption tower 2；16th ball valve 230 is normally open valve, for the gas in absorption tower 2 to be delivered into the second gas-liquid separation
In device 3；3rd manual blowdown valve 240 is normally close valve.
In the present embodiment, level gauging pipeline 14 also is provided with the second gas-liquid separator 3, and on the 3rd outlet line 30
Provided with the 19th ball valve 300, the 3rd tapping line 31 is provided with the 4th manual blowdown valve 311, the 20th ball valve 310 and hydraulic pressure control
Loop 15 processed, and the 3rd blowdown line 33 is provided with pressure release loop 16.
Specifically, the 19th ball valve 300 is normally open valve, for gas after desulfurization in the second gas-liquid separator 3 of discharge；Second
Ten ball valves 310 are normally open valve；4th manual blowdown valve 311 is normally close valve.
In the present embodiment, level gauging pipeline 14 also is provided with foam-catching tank 4, and the 4th outlet line 40 is provided with second
11 ball valves 400, the 4th tapping line 41 are divided into regenerator connecting pipeline 410 and sulfur filtration pond connecting pipeline 412 again, regenerated
Tower connecting pipeline 410 is provided with the 22nd ball valve 413 and hydraulic control circuit 15, is set in sulfur filtration pond connecting pipeline 412
There is the 23rd ball valve 414, the 4th tapping line 41 is provided with the 5th manual blowdown valve 415, and clean-up line 8 is provided with check-valves
82。
Specifically, the 22nd ball valve 413 is normally open valve, the 23rd ball valve 414 is normally close valve, de- in foam-catching tank 4
After sulphur agent rich solution reaches certain liquid level, the hydraulic control valve 151 on hydraulic control circuit 15 is opened, and desulfurizing agent rich solution is just
It can be entered by regenerator connecting pipeline 410 in regenerator 5.When flushing pump 80 works, the 22nd ball valve 413 is closed, and
Check-valves 82, the 23rd ball valve 414 are opened, desulfurizing agent lean solution is after the entrance foam-catching tank 4 of clean-up line 8 again from the 4th discharging tube
Enter in line 41 along sulfur filtration pond connecting pipeline 412 in sulfur filtration pond 6.
Specifically, when 4 hypertonia of foam-catching tank, in order to prevent foam-catching tank 4 from building the pressure, can open on the 4th outlet line 40
The 21st ball valve 400, the gases at high pressure allowed in foam-catching tank 4 are discharged through the 4th outlet line 40 to reach the purpose of pressure release.
In the present embodiment, regenerator 5 is provided with level gauging pipeline 14, and sulfur filtration pond connecting pipeline 412 is provided with
24th ball valve 416 and hydraulic control circuit 15, the second overflow launder inlet 56 is connected with clean-up line 8, on clean-up line 8
Provided with the 25th ball valve 83.
Specifically, above-mentioned 24th ball valve 416 is normally close valve, for blowdown；25th ball valve 83 is normally close valve, when
When flushing pump 80 works, open the 25th ball valve 83 and be used for cleaning and regeneration tower 5.
In the present embodiment, water charge line 64 and plus desulfurizing agent pipeline 65 are additionally provided with sulfur filtration pond 6.
The operation principle of selexol process process unit 100 provided by the invention is：Sulfurous gas first passes through the first gas-liquid
The liquid isolated is emitted into cesspool by the first tapping line 12 after separator 1, then sulfurous gas is passed through in absorption tower 2
Carrying out desulfuration operations, (the desulfurizing agent lean solution in absorption tower 2 becomes desulfurizing agent richness because absorbing the sulfide in sulfurous gas
Liquid), caused sweet gas body is sent to the second gas-liquid separator 3 in desulfuration operations, and the second gas-liquid separator 3 is used to separate by gas
The desulfurizing agent rich solution isolated simultaneously is delivered to regenerator 5 by desulfurizing agent rich solution that body carries out；Caused sulfur-bearing bubble in desulfuration operations
Foam flows into foam-catching tank 4, and the desulfurizing agent rich solution that foam-catching tank 4 is used to separate in sulfur-bearing foam send and send the desulfurizing agent rich solution isolated
To regenerator 5；Desulfurizing agent rich solution is sent directly to regenerator 5 caused by absorption tower 2 in desulfuration operations；Air on regenerator 5
Admission line 50 is used to outside air being sent into regenerator 5 to react with desulfurizing agent rich solution, by the sulphur in desulfurizing agent rich solution
Compound generates sulphur so that desulfurizing agent rich solution is changed into desulfurizing agent lean solution, and sulphur with desulfurizing agent lean solution successively through the 5th discharging tube
The tapping line 41 of line 52 and the 4th enters in sulfur filtration pond 6, and sulphur therein is filtered out by filter 62, and desulfurizing agent is poor
Liquid enters in liquid-accumulating trough 63 after then passing through filter 62, and absorption is back flowed back into through re-injection pipeline 7 again in the presence of lean pump 70
Reacted again with sulfurous gas in tower 2, so as to form desulfurizing agent lean solution -- desulfurizing agent rich solution -- circulation of desulfurizing agent lean solution
Process, flushing pump 80 is opened after the completion of desulfuration operations by clean-up line 8 respectively to foam-catching tank 4, regenerator 5, the second overflow
Groove 55, the 4th tapping line 41 and the 5th tapping line 52 are rinsed, and flushing liquor is filtered with filter 62, can be with
It is effective to avoid the deposited sulphur solid of foam-catching tank 4, regenerator 5, the 4th tapping line 41 and the 5th tapping line 52 from blocking.
Selexol process process unit provided by the invention has the beneficial effect that：Sulfurous gas enters absorption tower and desulfurizing agent
React and carry out desulfuration operations：Escaping gas enters the second gas-liquid separator in desulfuration operations；Caused sulfur-bearing foam stream
Enter foam-catching tank；The desulfurizing agent rich solution of generation is then sent to regenerator, and it is right that selexol process process unit provided by the invention passes through
Gas, sulfur-bearing foam, the desulfurizing agent rich solution occurred during the desulfuration operations of absorption tower takes different handling process respectively, solution
Determine the blockage problem occurred in selexol process technical process in each device and related pipeline due to sulfur deposition.This
Outside, selexol process process unit provided by the invention is also specially provided with flushing pump and clean-up line, can be to foam-catching tank, regenerator
And connecting pipeline therebetween is rinsed, the anti-clogging of the selexol process process unit is further improved.
It is described above, any formal limitation not is made to the present invention, although the present invention is disclosed such as by embodiment
On, but the present invention is not limited to, any person skilled in the art, do not departing from technical solution of the present invention scope
It is interior, when the technology contents using the disclosure above make a little change or are modified to the equivalent embodiments of equivalent variations, as long as being
Without departing from the content of technical solution of the present invention, what the technical spirit according to the present invention was made to above example any simply repaiies
Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (8)
1. a kind of selexol process process unit, it is characterised in that including the first gas-liquid separator, absorption tower, the second gas-liquid point
From device, foam-catching tank, regenerator, sulfur filtration pond, lean pump, flushing pump, air blower；
First gas-liquid separator is provided with sour gas admission line, the first outlet line and the first tapping line, the first escape pipe
Line is provided with the first blowdown line, and first outlet line is connected with absorption tower；
Absorption tower is provided with the first feed liquor pipeline, the second feed liquor pipeline, the 3rd feed liquor pipeline, the second outlet line, the second discharge opeing
Pipeline, is additionally provided with the first overflow launder in addition in absorption tower, and be provided with absorption tower corresponding first overflow launder feed liquor pipeline and
First overflow launder drain pipe line, wherein the first feed liquor pipeline is connected with first outlet line, the first feed liquor pipeline,
Two feed liquor pipelines and the first overflow launder feed liquor pipeline are connected with re-injection pipeline respectively, and the 3rd feed liquor pipeline and the first overflow launder go out liquid
Pipeline is connected with foam-catching tank respectively, and the second outlet line and the second gas-liquid separator are connected, and the second outlet line is provided with the
Two blowdown lines, the second blowdown line are connected with first blowdown line, and the second tapping line is connected with regenerator；
Second gas-liquid separator is provided with the 3rd outlet line, the 3rd tapping line and the first air inlet, on the 3rd outlet line
Provided with the 3rd blowdown line, the 3rd blowdown line is connected with first blowdown line, and the 3rd tapping line is connected with regenerator,
First air inlet is connected with second outlet line；
Foam-catching tank is provided with the 4th outlet line, the 4th tapping line, the first inlet and the first rinse mouth, the 4th outlet line
Be connected with the 3rd feed liquor pipeline, the 4th tapping line is connected with regenerator and sulfur filtration pond respectively, the first inlet and
The first overflow launder drain pipe line is connected, and the first rinse mouth is connected by clean-up line with sulfur filtration pond；
Regenerator is provided with air inlet pipeline, the 5th outlet line, the 5th tapping line, the second inlet and the 3rd feed liquor
Mouthful, the second overflow launder is additionally provided with regenerator in addition, and corresponding second overflow launder inlet and second are provided with regenerator
Overflow launder drain pipe line, air inlet pipeline are connected with air blower, and air inlet pipeline is connected with second tapping line,
The air blower and the first motor are electrically connected with, and the 5th tapping line and the 4th tapping line are connected, the second inlet and described
3rd tapping line is connected, and the 3rd inlet is connected with the 4th tapping line, the second overflow launder inlet and the flushing
Pipeline is connected, and the second overflow launder drain pipe line is connected with sulfur filtration pond；
Sulfur filtration pond is provided with the 4th inlet, the 5th inlet, filter and liquid-accumulating trough, the 4th inlet and the described 4th
Tapping line is connected, and the 5th inlet and the second overflow launder drain pipe line are connected, liquid-accumulating trough respectively with the re-injection pipeline and institute
Clean-up line is stated to be connected；
Re-injection pipeline is provided with lean pump, and lean pump and the second motor are electrically connected with；
Clean-up line is provided with flushing pump, and flushing pump and the 3rd motor are electrically connected with.
2. selexol process process unit according to claim 1, it is characterised in that on first gas-liquid separator also
Provided with level gauging pipeline, the first ball valve is additionally provided with the sulfur-bearing admission line, first outlet line is provided with second
Ball valve, is sequentially provided with hydraulic control circuit, the 3rd ball valve, first manual blowoff valve on first tapping line, and described first
Blowdown line is provided with pressure release loop；
Level gauging pipeline includes the 4th ball valve, liquid level gauge and the 5th ball valve being sequentially connected in series；
Hydraulic control circuit includes the 6th ball valve, hydraulic control valve, the 7th ball valve, stop valve and the second manual blowdown valve, wherein
It is connected in parallel after 6th ball valve, hydraulic control valve and the 7th ball valve are sequentially connected in series and with stop valve, the second manual blowdown valve
Between the 6th ball valve and the hydraulic control valve；
Pressure release loop includes three pipelines in parallel, and first article of pipeline is provided with the 8th ball valve, rupture disk and the 9th ball valve, Article 2
Pipeline is provided with the tenth ball valve, safety valve and the 11st ball valve, and Article 3 pipeline is provided with the 12nd ball valve, and the rupture disk
It is provided with pressometer.
3. selexol process process unit according to claim 2, it is characterised in that be additionally provided with the absorption tower described
Level gauging pipeline, and the first feed liquor pipeline is provided with the 13rd ball valve, the second feed liquor pipeline is provided with the 14th ball valve, the 3rd
Feed liquor pipeline is provided with the 15th ball valve, and the second outlet line is provided with the 16th ball valve, and the second blowdown line is provided with described
Pressure release loop, the second tapping line are provided with the 3rd manual blowdown valve and the hydraulic control circuit, the first overflow launder feed tube
Line is provided with the 17th ball valve, and the first overflow launder drain pipe line is provided with the 18th ball valve.
4. selexol process process unit according to claim 2, it is characterised in that set on second gas-liquid separator
There is a level gauging pipeline, the 3rd outlet line is provided with the 19th ball valve, and the 3rd tapping line is provided with the
Four manual blowdown valves, the 20th ball valve and the hydraulic control circuit, and the 3rd blowdown line returns provided with the pressure release
Road.
5. selexol process process unit according to claim 2, it is characterised in that the foam-catching tank is provided with the liquid
Position measurement pipeline, the 4th outlet line are provided with the 21st ball valve, and the 4th tapping line is divided into regenerator company again
Adapter line and sulfur filtration pond connecting pipeline, the regenerator connecting pipeline are provided with the 22nd ball valve and the hydraulic control
Loop, sulfur filtration pond connecting pipeline are provided with the 23rd ball valve, and it is manual that the 4th tapping line is provided with the 5th
Blowoff valve, the clean-up line are provided with check-valves.
6. selexol process process unit according to claim 5, it is characterised in that the regenerator is provided with the liquid
Position measurement pipeline, sulfur filtration pond connecting pipeline is provided with the 24th ball valve and the hydraulic control circuit, described to overflow
Chute inlet is connected with clean-up line, and clean-up line is provided with the 25th ball valve.
7. selexol process process unit according to claim 2, it is characterised in that be additionally provided with the sulfur filtration pond
Water charge line and plus desulfurizing agent pipeline.
8. the selexol process process unit according to any one of claim 2 to 6, it is characterised in that the level gauging
Liquid level gauge in pipeline is connected with the hydraulic control valve in the hydraulic control circuit, when the liquid level that liquid level gauge measures reaches
After the liquid level of setting, hydraulic control valve switchs to opening from closure state.
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| CN201710366168.8A CN107460014B (en) | 2017-05-23 | 2017-05-23 | Natural gas desulfurization process device |
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|---|---|---|---|
| CN201710366168.8A CN107460014B (en) | 2017-05-23 | 2017-05-23 | Natural gas desulfurization process device |
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| CN107460014B CN107460014B (en) | 2024-03-08 |
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Cited By (1)
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| CN109722316A (en) * | 2019-02-25 | 2019-05-07 | 浙江佳运能源技术有限公司 | It is a kind of it is high hold desulfurizing agent and cyclic absorption regeneration use the desulfurizing agent desulphurization system |
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| CN107460014B (en) | 2024-03-08 |
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