CN203999434U - Ethylene unit cold-zone parking material recovering system - Google Patents
Ethylene unit cold-zone parking material recovering system Download PDFInfo
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- CN203999434U CN203999434U CN201420308456.XU CN201420308456U CN203999434U CN 203999434 U CN203999434 U CN 203999434U CN 201420308456 U CN201420308456 U CN 201420308456U CN 203999434 U CN203999434 U CN 203999434U
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000000463 material Substances 0.000 title claims abstract description 61
- 239000005977 Ethylene Substances 0.000 title claims abstract description 55
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 238000005984 hydrogenation reaction Methods 0.000 claims abstract description 9
- 238000009795 derivation Methods 0.000 claims 1
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007600 charging Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Ethylene unit cold-zone parking material recovering system, belongs to ethylene unit material recycle technical field.It is characterized in that, comprising: methane removes feed system, deethanizing column (11), carbon two hydrogenation towers (10), green oil wash tower (9), ethene and produces system and material recycle pipeline; Described methane removes feed system and is connected with the opening for feed of deethanizing column (11), deethanizing column (11) connects carbon two hydrogenation towers (10) successively, green oil wash tower (9) is produced system with ethene afterwards and is connected, methane removes feed system, system produced by ethene and green oil wash tower (9) is connected with material recycle pipeline, deethanizing column (11) is connected with material recycle pipeline by return tank device, and ethene is produced system and by material, derived pipeline simultaneously and remove feed system with methane and be connected.Native system, when ethylene unit stops, reclaims the material in each reactor in cold-zone, has reduced production cost and has reduced environmental pollution simultaneously.
Description
Technical field
Ethylene unit cold-zone parking material recovering system, belongs to ethylene unit material recycle technical field.Be specifically related to the system that a kind of material that need to burn when stopped in ethylene unit cold-zone in prior art is recycled.
Background technology
As shown in Figure 2, in the prior art, in the normal preparation flow of ethene, cold-zone includes following step: material is deviate from methane in demethanizing tower, deviate to enter deethanizing column after methane and remove carbon three and above heavy constituent, after removing carbon three and above heavy constituent, material enters carbon two hydrogenators from the tower top of deethanizing column, then through carbon two hydrogenators, enter ethylene rectification tower, then from ethylene rectification tower extraction ethene.In the prior art, when ethylene plant need to be stopped, needing that material residual in each reactor and tower is delivered to flare system burns, but these materials are for can utilize material, all there is certain economic worth, after gasification, by flare system, incinerate on the one hand and can bring larger financial loss, in burning process, can produce a large amount of greenhouse gases on the other hand, cause environmental pollution.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of when ethylene unit stops, material in each reactor and tower in cold-zone is reclaimed, reduced the ethylene unit cold-zone parking material recovering system that production cost has reduced environmental pollution simultaneously.
The utility model solves the technical scheme that its technical problem adopts: this ethylene unit cold-zone parking material recovering system, it is characterized in that, comprise: methane removes feed system, deethanizing column, carbon two hydrogenation towers, green oil wash tower, ethene and produces system and material recycle pipeline, material recycle pipeline comprises the 9th valve, the 11 valve, the 12 valve of series connection successively and the collection pipeline that is connected to the 12 valve export end;
Described methane removes feed system and is connected with the opening for feed of deethanizing column, deethanizing column connects carbon two hydrogenation towers successively, green oil wash tower is produced system with ethene afterwards and is connected, methane removes feed system, system produced by ethene and green oil wash tower is connected with material recycle pipeline, deethanizing column is connected with material recycle pipeline by return tank device, and ethene is produced system and by material, derived pipeline simultaneously and remove feed system with methane and be connected.
Described methane removes feed system and comprises the first demethanizing tower and the second demethanizing tower, connect successively the 16 valve, the 15 valve, the 14 valve and the 13 valve of the below of the second demethanizing tower is connected with the first demethanizing tower below, between the 15 valve and the 14 valve, be connected in parallel to the 4th and fall drench and the 5th fall to drench, described material is derived pipeline and is connected in the 4th in parallel and falls to drench and the 5th fall between pouring;
The outlet of the first demethanizing tower bottom is connected with the entrance of the 3rd recycle pump, the 3rd circulation pump outlet is divided into two-way: a road is connected with the opening for feed of deethanizing column, one end of another Lu Yu eight valves is connected, the other end of the 8th valve is divided into two-way: a road is parallel-connected on described collection pipeline, is connected to the entrance at the first demethanizing tower middle part after another road series connection the tenth valve.
Described ethene is produced system and is comprised the first ethylene rectification tower and the second ethylene rectification tower, the first ethylene rectification tower is connected with the outlet at green oil wash tower top with the entrance of the second ethylene rectification tower top, the outlet of the second ethylene rectification tower below second valve of connecting is successively connected to green oil wash tower bottom with the 3rd valve and is connected, is connected in parallel to second and falls to drench and the 3rd pouring between the second valve and the 3rd valve;
The outlet of the first ethylene rectification tower below first valve of connecting is divided into three tunnels: the first via is connected in parallel and first falls to drench, the second tunnel is derived pipeline with described material and is connected, Third Road is divided into two-way: a road is parallel-connected to second and falls pouring and the 3rd between pouring, between the 9th valve and the 11 valve described in another road is parallel-connected to.
Described return tank device comprises return tank and the first recycle pump, the outlet at deethanizing column top is connected with the entrance at return tank top, the outlet of return tank bottom is connected with the entrance of the first recycle pump, the first circulation pump outlet is divided into two-way: road series connection the 5th valve is connected with the opening for feed of deethanizing column, and another road series connection the 4th valve is parallel-connected to the entrance of the 9th described valve.
The outlet of described green oil wash tower bottom is connected with the entrance of the second recycle pump by pipeline, the second circulation pump outlet is divided into two-way: a road is parallel-connected to the entrance of the 9th described valve, and another road series connection the 6th valve is connected with the opening for feed of deethanizing column.
The first described demethanizing tower and the second demethanizing tower are for being connected in parallel.
The first described ethylene rectification tower and the second ethylene rectification tower are for being connected in parallel.
Compared with prior art, had beneficial effect of the present utility model is:
Ethylene unit of the present utility model cold-zone parking material recovering system will need the material burning to recycle in prior art, reclaim on the one hand prior art and burn the material losing, and has improved the utilization ratio of material, has reduced production cost; The environmental pollution that has reduced on the other hand the greenhouse gases that in prior art, material burning produces and caused.Realized recycling economy.
Accompanying drawing explanation
Fig. 1 is ethylene unit cold-zone parking material recovering system connection diagram.
Fig. 2 is ethylene unit part schematic flow sheet in prior art.
Wherein: 1, the first ethylene rectification tower 2, the first valve 3, first drenches 4, the second ethylene rectification tower 5, the second valve 6, second drenches 7, the 3rd drenches 8, the 3rd valve 9, green oil wash tower 10, carbon two hydrogenation towers 11, deethanizing column 12, return tank 13, the first recycle pump 14, the 4th valve 15, the 5th valve 16, the 6th valve 17, the second recycle pump 18, the 7th valve 19, the 8th valve 20, the 3rd recycle pump 21, the 9th valve 22, the tenth valve 23, the 11 valve 24, the first demethanizing tower 25, the 12 valve 26, the 13 valve 27, the 14 valve 28, the 4th drenches 29, the 5th drenches 30, the 15 valve 31, the 16 valve 32, the second demethanizing tower 33, collect pipeline.
Embodiment
Fig. 1 is most preferred embodiment of the present utility model, below in conjunction with 1 pair of the utility model of accompanying drawing, is described further.
As shown in Figure 1, the outlet of the second demethanizing tower 32 belows is connected successively after the 16 valve the 31, the 15 valve the 30, the 14 valve 27 and the 13 valve 26 and is connected with the entrance of the first demethanizing tower 24 belows, is connected in parallel to the 4th and drenches the 28 and the 5th and drench 29 between the 15 valve 30 and the 14 valve 27.The first demethanizing tower 24 outlet at bottoms are connected with the entrance of the 3rd recycle pump 20, the outlet of the 3rd recycle pump 20 is divided into two-way: a road is connected to one end of the 8th valve 19, the other end of the 8th valve 19 is divided into two-way: a road is connected to one end of the 7th valve 18, another road is connected to one end of the tenth valve 22, and the other end of the tenth valve 22 is connected to the entrance at the first demethanizing tower 24 middle parts.The exit of the 3rd above-mentioned recycle pump 20 separately lead up to pipeline be connected with the opening for feed of deethanizing column 11 (not shown in FIG.).In actual field, between the second demethanizing tower 32 and the first demethanizing tower 24, for being connected in parallel, entering material in it and complete demethanizing and enter deethanizing column 11 after processing simultaneously.
The outlet of deethanizing column 11 connects carbon two hydrogenation towers 10 and green oil wash tower 9 successively by pipeline, and the outlet at green oil wash tower 9 tops is connected with the entrance at the first ethylene rectification tower 1 top with the second ethylene rectification tower 4 successively.The outlet of green oil wash tower 9 bottoms is connected with the entrance of the second recycle pump 17, the outlet of the second recycle pump 17 is divided into two-way: a road is connected with one end of the 6th valve 16, the other end of the 6th valve 16 be connected with the entrance of deethanizing column 11 by pipeline (not shown in FIG.); The pipeline of separately leading up to is connected successively after the 9th valve the 21, the 11 valve 23 and is connected with one end of the 12 valve 25, the other end of the 12 valve 25 is divided into two-way: pipeline 33 connect is collected on a road, and another road is connected with the other end of above-mentioned the 7th valve 18.
The outlet at deethanizing column 11 tops is connected with the entrance at return tank 12 tops by pipeline, the outlet of return tank 12 bottoms is connected with the entrance of the first recycle pump 13, the outlet of the first recycle pump 13 is divided into two-way: a road is connected with one end of the 5th valve 15, the other end of the 5th valve 15 be connected with the entrance of deethanizing column 11 by pipeline (not shown in FIG.); One end of another Lu Yu tetra-valves 14 is connected, and the other end of the 4th valve 14 is parallel-connected between the outlet and the 9th valve 21 of the second above-mentioned recycle pump 17.
The outlet of the second above-mentioned ethylene rectification tower 4 bottoms second valve 5 of connecting is connected with green oil wash tower 9 bottoms with after the 3rd valve 8, and between the second valve 5 and the 3rd valve 8, while shunting resistance is connected with second and drenches the 6 and the 3rd and drench 7.The outlet of the first ethylene rectification tower 1 bottom is connected after the first valve 2 and is divided into three tunnels: the first via connects first and drenches 3, the second tunnel is parallel-connected to the above-mentioned the 4th and drenches the 28 and the 5th and drench between 29, Third Road is divided into two-way: a road is parallel-connected to above-mentioned second and drenches the 6 and the 3rd and drench between 7, and another road is parallel-connected between above-mentioned the 9th valve 21 and the 11 valve 23.
Specific works principle and working process are as follows: when system is normally worked, the 5th valve 15 and the 6th valve 16 are opened, other valve closess, now material enters deethanizing column 11 complete demethanizing processing in the second demethanizing tower 32 and the first demethanizing tower 24 after simultaneously.Material enters carbon two hydrogenation towers 10 and green oil wash tower 9 complete deethanizing processing in deethanizing column 11 after successively, the outlet of material from green oil wash tower 9 tops enters the first ethylene rectification tower 1 and the second ethylene rectification tower 4 simultaneously, then from the outlet extraction ethene of the first ethylene rectification tower 1 and the second ethylene rectification tower 4.In normal course of operation, gaseous state material in deethanizing column 11 enters in return tank 12 through pipeline, and under the effect of the first recycle pump 13, be back in deethanizing column 11, the material of green oil wash tower 9 bottoms is back in deethanizing column 11 simultaneously under the effect of the second recycle pump 17.
When system is prepared to stop, first opening the 16 valve the 31, the 15 valve the 30, the 14 valve 27 and the 13 valve 26 opens, material in the second demethanizing tower 32 is poured in the first demethanizing tower 24, and material is poured complete the second demethanizing tower 32 afterwards into and is stopped.Then the 16 valve 31 and the 15 valve 30 are closed, the first valve 2 is opened, the interior unreacted material of the first ethylene rectification tower 1 is poured in the first demethanizing tower 24, material is poured complete the first ethylene rectification tower 1 afterwards into and is stopped.Pouring out in process of the second demethanizing tower 32 and the first ethylene rectification tower 1 material, the first demethanizing tower 24 and the second ethylene rectification tower 4 normally move.
After the first demethanizing tower 24 chargings stop, stopping the 3rd recycle pump 20, now the first demethanizing tower 24 stops to the interior charging of deethanizing column 11, and the material in deethanizing column 11 enters return tank 12 and reclaims.Close the 5th valve 15 and the 6th valve 16, open the 4th valve 14, the 9th valve the 21, the 11 valve 23 and the 12 valve 25, when the liquid level in return tank 12 is reduced to 10%, stop the first recycle pump 13, the material in return tank 12 enters collection pipeline 33 through the 4th valve 14, the 9th valve the 21, the 11 valve 23 and the 12 valve 25 and reclaims.
Open the second valve 5 and the 3rd valve 8, under the effect of the second recycle pump 17, first material in the second ethylene rectification tower 4 enters green oil wash tower 9, then via the second recycle pump 17, the 9th valve the 21, the 11 valve 23 and the 12 valve 25, enters collection pipeline 33 and reclaims.
The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (7)
1. ethylene unit cold-zone parking material recovering system, it is characterized in that, comprise: methane removes feed system, deethanizing column (11), carbon two hydrogenation towers (10), green oil wash tower (9), ethene and produces system and material recycle pipeline, material recycle pipeline comprises the 9th valve (21), the 11 valve (23), the 12 valve (25) of series connection successively and the collection pipeline (33) that is connected to the 12 valve (25) exit end;
Described methane removes feed system and is connected with the opening for feed of deethanizing column (11), deethanizing column (11) connects carbon two hydrogenation towers (10) successively, green oil wash tower (9) is produced system with ethene afterwards and is connected, methane removes feed system, system produced by ethene and green oil wash tower (9) is connected with material recycle pipeline, deethanizing column (11) is connected with material recycle pipeline by return tank device, and ethene is produced system and by material, derived pipeline simultaneously and remove feed system with methane and be connected.
2. ethylene unit according to claim 1 cold-zone parking material recovering system, it is characterized in that: described methane removes feed system and comprises the first demethanizing tower (24) and the second demethanizing tower (32), the below of the second demethanizing tower (32) the 16 valve (31) of connecting successively, the 15 valve (30), the 14 valve (27) is connected with the first demethanizing tower (24) below with the 13 valve (26), between the 15 valve (30) and the 14 valve (27), be connected in parallel to the 4th and fall to drench (28) and the 5th pouring (29), described material derivation pipeline is connected in the 4th in parallel and falls to drench (28) and the 5th between pouring (29),
The outlet of the first demethanizing tower (24) bottom is connected with the entrance of the 3rd recycle pump (20), the outlet of the 3rd recycle pump (20) is divided into two-way: a road is connected with the opening for feed of deethanizing column (11), one end of another Lu Yu eight valves (19) is connected, the other end of the 8th valve (19) is divided into two-way: it is upper that a road is parallel-connected to described collection pipeline (33), is connected to the entrance at the first demethanizing tower (24) middle part after another road series connection the tenth valve (22).
3. ethylene unit according to claim 1 cold-zone parking material recovering system, it is characterized in that: described ethene is produced system and comprised the first ethylene rectification tower (1) and the second ethylene rectification tower (4), the first ethylene rectification tower (1) is connected with the outlet at green oil wash tower (9) top with the entrance of the second ethylene rectification tower (4) top, the outlet of the second ethylene rectification tower (4) below the second valve (5) of connecting is successively connected to green oil wash tower (9) bottom with the 3rd valve (8) and is connected, between the second valve (5) and the 3rd valve (8), be connected in parallel to second and fall to drench (6) and the 3rd pouring (7),
The outlet of the first ethylene rectification tower (1) below the first valve (2) of connecting is divided into three tunnels: the first via is connected in parallel and first falls to drench (3), the second tunnel is derived pipeline with described material and is connected, Third Road is divided into two-way: a road is parallel-connected to second and falls to drench (6) and the 3rd between pouring (7), between the 9th valve (21) and the 11 valve (23) described in another road is parallel-connected to.
4. ethylene unit according to claim 1 cold-zone parking material recovering system, it is characterized in that: described return tank device comprises return tank (12) and the first recycle pump (13), the outlet at deethanizing column (11) top is connected with the entrance at return tank (12) top, the outlet of return tank (12) bottom is connected with the entrance of the first recycle pump (13), the outlet of the first recycle pump (13) is divided into two-way: road series connection the 5th valve (15) is connected with the opening for feed of deethanizing column (11), another road series connection the 4th valve (14) is parallel-connected to the entrance of the 9th described valve (21).
5. ethylene unit according to claim 1 cold-zone parking material recovering system, it is characterized in that: the outlet of described green oil wash tower (9) bottom is connected with the entrance of the second recycle pump (17) by pipeline, the outlet of the second recycle pump (17) is divided into two-way: a road is parallel-connected to the entrance of the 9th described valve (21), and another road series connection the 6th valve (16) is connected with the opening for feed of deethanizing column (11).
6. ethylene unit according to claim 2 cold-zone parking material recovering system, is characterized in that: described the first demethanizing tower (24) and the second demethanizing tower (32) are for being connected in parallel.
7. ethylene unit according to claim 3 cold-zone parking material recovering system, is characterized in that: described the first ethylene rectification tower (1) and the second ethylene rectification tower (4) are for being connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420308456.XU CN203999434U (en) | 2014-06-11 | 2014-06-11 | Ethylene unit cold-zone parking material recovering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420308456.XU CN203999434U (en) | 2014-06-11 | 2014-06-11 | Ethylene unit cold-zone parking material recovering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203999434U true CN203999434U (en) | 2014-12-10 |
Family
ID=52039464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420308456.XU Expired - Lifetime CN203999434U (en) | 2014-06-11 | 2014-06-11 | Ethylene unit cold-zone parking material recovering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203999434U (en) |
-
2014
- 2014-06-11 CN CN201420308456.XU patent/CN203999434U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141210 |
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| CX01 | Expiry of patent term |