CN100556494C - Solvent recovery unit in the oil extraction plant tail gas - Google Patents
Solvent recovery unit in the oil extraction plant tail gas Download PDFInfo
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- CN100556494C CN100556494C CNB2008100113324A CN200810011332A CN100556494C CN 100556494 C CN100556494 C CN 100556494C CN B2008100113324 A CNB2008100113324 A CN B2008100113324A CN 200810011332 A CN200810011332 A CN 200810011332A CN 100556494 C CN100556494 C CN 100556494C
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Abstract
Solvent recovery unit in the oil extraction plant tail gas, the recovery tower and the oil water separator that have pipeline to link to each other, recovery tower has cylindrical-shaped tower, the upper side of tower body has water inlet pipe, there is exhaust outlet the upper end of tower body, the tower body downside has liquid outlet, gas inlet is arranged at the bottom of tower body, between liquid outlet in the tower body and the mist eliminator column plate or filler is arranged, and oil water separator has lineal hexahedral to describe device, bottom surface along the container length direction is the inclined-plane, be evenly equipped with dividing plate in the container, on the dividing plate, the lower end respectively with container on, below gapped, there is the liquid inlet on the container upper left side, there is solvent outlet in the container upper right side, there is water out the below, and there is sewage draining exit on the right side of bottom surface.The present invention is when work, and the contact of tail G﹠W is very abundant, and solvent recovering yield is higher in the tail gas; Be evenly equipped with dividing plate in the oil water separator, the mixed liquor that helps liquid solvent and water is divided into two-layer up and down in the process of oil water separator of flowing through because of gravity is different, the good separating effect of liquid towards solvent and water.
Description
Technical field
The present invention relates to solvent recovery unit in a kind of oil extraction plant tail gas, the recovery tower and the oil water separator of solvent recovery unit in particularly a kind of oil extraction plant tail gas.
Background technology
Produce in the leaching production of vegetable oil in the method that leaches with solvent, some process units can be discharged the tail gas that contains solvent gas, the quality that solvent recovery in the tail gas is related to production cost and product, also being related to the safety of production and the environment of production, is an important procedure that leaches in producing to the recovery of solvent in the tail gas.Solvent recovery need be used solvent recovery unit in the tail gas in the tail gas, and at present, solvent recovery unit has paraffin retracting device and freezing recovery device in the tail gas, these retracting device complex structures, and equipment investment is higher, operating cost is big.In order to reduce investment, simplify the operation, in the prior art, Chinese patent ZL 97223638.4 discloses a kind of tail gas solvent recovery unit, water-cooled jar and oil water separator that the useful pipeline of this tail gas solvent recovery unit links to each other, the water-cooled jar has the tank body of sealing, gas inlet is arranged at the bottom of tank body, there is liquid outlet the side of tank body, water inlet and on-condensible gas outlet are arranged at the top of tank body, the end of water inlet in jar has shower nozzle, there is two-layer at least sieve plate the inside of tank body, and sieve plate is that oil water separator has closed container below the liquid outlet of tank body side, the liquid inlet is arranged at container top, container side has solvent outlet, and container bottom has delivery port, is connected with pipeline between the liquid outlet of water-cooled jar and the liquid inlet of oil water separator.During use, spray water in tank body from the water inlet at the top of tank body, the tail gas that contains solvent gas of discharging during leaching is produced enters in the tank body from the gas inlet of tank base, in tank body, solvent gas in the tail gas directly contacts with water, bubbling is cooled in the water of gas in tank body, condensation gets off to become liquid solvent, liquid solvent and water mix the inflow oil water separator, the mixed liquor of liquid solvent and water at oil water separator because of the different layerings of gravity, the water of lower floor is discharged from the delivery port of oil water separator bottom and is recycled, and the solvent on upper strata is discharged and reclaimed from the solvent outlet of oil water separator side.Reclaim in the tail gas dissolving agent process at device with gas, liquid direct contact heat transfer, the contact of gas, liquid whether fully greatly influence solvent recovering yield in the tail gas, the tank body of above-mentioned tail gas solvent recovery unit is a circle tube tank, has only sieve plate in the tank body, sieve plate is below liquid outlet, bubbling in the water of tail gas in tank body and directly contact is cooled, the gas of this tail gas solvent recovery unit, liquid contact is not very abundant, solvent recovering yield is not very high in the tail gas, has only the separating effect of the oil water separator liquid towards solvent of container and water bad.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, propose that a kind of solvent recovering yield is higher, solvent recovery unit in the oil extraction plant tail gas of the good separating effect of liquid towards solvent and water.
The present invention is achieved using the following method.
Solvent recovery unit has recovery tower and oil water separator in the oil extraction plant tail gas, recovery tower has cylindrical-shaped tower, the upper side of tower body has water inlet pipe, the end of water inlet pipe in tower is connected with downward fountain head, mist eliminator is arranged at the top in the tower body, the top of mist eliminator, there is exhaust outlet the upper end of tower body, the tower body downside has liquid outlet, gas inlet is arranged at the bottom of tower body, there is the choke cover gas inlet top in the tower body, between liquid outlet in the tower body and the gas inlet sieve plate is arranged, between liquid outlet in the tower body and the fountain head column plate or filler are arranged, oil water separator has lineal hexahedral to describe device, bottom surface along the container length direction is high right low inclined-plane, a left side, be evenly equipped with three～five dividing plates in the container along its length, the upper end of dividing plate and container top gapped, the upper end of dividing plate is on same horizontal plane, the lower end and the container bottoms of dividing plate are gapped, the lower end of dividing plate is on high right low same inclined-plane, a left side, before dividing plate and the container, the baffling gap is arranged between the rear wall successively, there is the liquid inlet top, container left side, there is solvent outlet the top on container right side, there is water out the below, there is sewage draining exit on the right side of bottom surface, is connected with pipeline between the liquid outlet of recovery tower side and the liquid inlet of oil water separator.
During use, water inlet pipe from recovery tower top, fountain head is sprayed water in tower, water flows from the top down along column plate or filler in tower, the tail gas that contains solvent gas that leaches the process units discharge enters in the tower from the gas inlet bottom the recovery tower, tail gas flows from bottom to top along column plate or filler in tower, solvent gas in the tail gas and water in tower column plate or filler on convection current contact and be cooled, condensation gets off to become liquid solvent, the liquid outlet that liquid solvent and water mix through the recovery tower side flows into oil water separator, liquid solvent is divided into because of gravity is different at oil water separator with the mixed liquor of water, two-layer down, the water of lower floor is discharged from the water out on oil water separator right side and is recycled, and the solvent on upper strata flows out and is recovered from the solvent outlet of top, oil water separator right side.The a small amount of dregs of rice slag that contains in the mixed liquor of liquid solvent and water can intermittently be discharged from the sewage draining exit on right side, oil water separator bottom surface, and the tail gas that condensation goes out behind the solvent is discharged from the exhaust outlet of tower body upper end.
The present invention has recovery tower, and when work, the contact of tail G﹠W is very abundant, and solvent recovering yield is higher in the tail gas; The bottom surface of oil water separator is high right low inclined-plane, a left side, be evenly equipped with three～five dividing plates in the container along its length, the upper end of dividing plate is on same horizontal plane, the lower end and the bottom surface of dividing plate are gapped, the lower end of dividing plate is on high right low same inclined-plane, a left side, the baffling gap is arranged between the front and back walls of dividing plate and container successively, this structure help liquid solvent and the mixed liquor of water in the process of oil water separator of flowing through, be divided into because of gravity is different upper and lower two-layer, the mixed liquor good separating effect of liquid towards solvent and water.
Below in conjunction with accompanying drawing, the present invention is further described.
Description of drawings
Fig. 1 is the main cross-sectional schematic according to solvent recovery unit in a kind of oil extraction plant tail gas of invention scheme proposition of the present invention;
Fig. 2 is the A-A cross-sectional schematic of Fig. 1;
Fig. 3 is that schematic diagram cuts open in the oil water separator office of overlooking among Fig. 1;
Fig. 4 is a Packed recovery tower master cross-sectional schematic between interior liquid outlet of tower body and the fountain head;
Fig. 5 is that interior liquid outlet of tower body and the epimere between the fountain head have column plate, the Packed recovery tower master of hypomere cross-sectional schematic;
Fig. 6 is that the internal diameter of epimere between interior liquid outlet of tower body and the fountain head is bigger, and the internal diameter of hypomere is less, and the epimere in the tower body has column plate, the main cross-sectional schematic of the Packed recovery tower of hypomere in the tower body.
The specific embodiment
Fig. 1, Fig. 2, among Fig. 3, the useful pipeline 1 of solvent recovery unit links to each other in the oil extraction plant tail gas recovery tower 2 and oil water separator 3, recovery tower has cylindrical-shaped tower 4, the upper side of tower body has water inlet pipe 5, the end of water inlet pipe in tower is connected with downward fountain head 6, mist eliminator 7 is arranged at the top in the tower body, the top of mist eliminator, there is exhaust outlet 8 upper end of tower body, the tower body downside has liquid outlet 9, gas inlet 10 is arranged at the bottom of tower body, there is choke cover 11 gas inlet top in the tower body, between liquid outlet in the tower body and the gas inlet sieve plate 12 is arranged, between liquid outlet in the tower body and the fountain head column plate 13 is arranged, oil water separator has lineal hexahedral to describe device 14, bottom surface along the container length direction is high right low inclined-plane 15, a left side, be evenly equipped with four dividing plates 16 in the container along its length, top gapped 17 of the upper end of dividing plate and container, the upper end of dividing plate is on same horizontal plane 18, the lower end of dividing plate and the bottom surface of container gapped 19, the lower end of dividing plate is on high right low same inclined-plane 20, a left side, before dividing plate and the container, baffling gap 21 is arranged between the rear wall successively, there is liquid inlet 22 top, container left side, there is solvent outlet 23 top on container right side, there is water out 24 below, there is sewage draining exit 25 on the right side of bottom surface, the outer front side of container is evenly equipped with liquid level gauge 26, is connected with pipeline 1 between the liquid outlet 9 of recovery tower side and the liquid inlet 22 of oil water separator.
Above-mentioned recovery tower is the column plate tower that column plate is arranged between interior liquid outlet of tower body and the fountain head.Recovery tower also can be a Packed packed tower between interior liquid outlet of tower body and the fountain head.Recovery tower also can be that epimere has the Packed two sections towers of column plate hypomere between interior liquid outlet of tower body and the fountain head.The internal diameter that two sections towers can be epimeres is bigger, two sections reducing towers that the internal diameter of hypomere is less.
Among Fig. 4, recovery tower is the packed tower that filler 27 is arranged between interior liquid outlet of tower body and the fountain head.
Among Fig. 5, recovery tower is that epimere has column plate 28 between interior liquid outlet of tower body and the fountain head, and hypomere has two sections towers of filler 29.
Among Fig. 6, the internal diameter that above-mentioned two sections towers are epimeres 30 is bigger, two sections reducing towers that the internal diameter of hypomere 31 is less, the hypomere internal diameter is the flow at tail gas, spray under the condition of the flow of water and selected filler parameter, flow downward in the tower water reach the required internal diameter of liquid flooding when between filler, directly contacting with the tail gas that upwards flows, the internal diameter of epimere is the flow at tail gas, spray under the condition of parameter of the flow of water and selected column plate, flow downward in the tower water be required internal diameter under the normal bubbling state of non-liquid flooding when on column plate, directly contacting with the tail gas that upwards flows.
Claims (6)
1. solvent recovery unit in the oil extraction plant tail gas, recovery tower and oil water separator are arranged, it is characterized in that: recovery tower has cylindrical-shaped tower, the upper side of tower body has water inlet pipe, the end of water inlet pipe in tower is connected with downward fountain head, mist eliminator is arranged at the top in the tower body, the top of mist eliminator, there is exhaust outlet the upper end of tower body, the tower body downside has liquid outlet, and gas inlet is arranged at the bottom of tower body, and there is the choke cover gas inlet top in the tower body, between liquid outlet in the tower body and the gas inlet sieve plate is arranged, between liquid outlet in the tower body and the fountain head column plate is arranged or fill out
Oil water separator has lineal hexahedral to describe device, bottom surface along the container length direction is high right low inclined-plane, a left side, be evenly equipped with three～five dividing plates in the container along its length, the upper end of dividing plate and container top gapped, the upper end of dividing plate is on same horizontal plane, the lower end of dividing plate and the bottom surface of container are gapped, the lower end of dividing plate is on high right low same inclined-plane, a left side, before dividing plate and the container, the baffling gap is arranged between the rear wall successively, and there is the liquid inlet top, container left side, and there is solvent outlet the top on container right side, there is water out the below, there is sewage draining exit on the right side of bottom surface, is connected with pipeline between the liquid outlet of recovery tower side and the liquid inlet of oil water separator
2. by solvent recovery unit in the described oil extraction plant tail gas of claim 1, it is characterized in that: uniform along its length dividing plate is four in the described container,
3. by solvent recovery unit in the described oil extraction plant tail gas of claim 1, it is characterized in that: described recovery tower is the column plate tower that column plate is arranged between interior liquid outlet of tower body and the fountain head.
4. by solvent recovery unit in the described oil extraction plant tail gas of claim 1, it is characterized in that: described recovery tower is a Packed packed tower between interior liquid outlet of tower body and the fountain head.
5. by solvent recovery unit in the described oil extraction plant tail gas of claim 1, it is characterized in that: liquid outlet in the described recovery tower tower body and the epimere between the fountain head have column plate, and hypomere has filler.
6. by solvent recovery unit in the described oil extraction plant tail gas of claim 1, it is characterized in that: the internal diameter of epimere is bigger between liquid outlet in the described recovery tower tower body and the fountain head, the internal diameter of hypomere is less, epimere has column plate, hypomere has filler, the hypomere internal diameter is the flow at tail gas, spray under the condition of the flow of water and selected filler parameter, the water that flows downward in the tower reaches the required internal diameter of liquid flooding when directly contacting between filler with the tail gas that upwards flows, and the internal diameter of epimere is the flow at tail gas, spray under the condition of parameter of the flow of water and selected column plate, the water that flows downward in the tower is required internal diameter under the normal bubbling state of non-liquid flooding when directly contacting on column plate with the tail gas that upwards flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100113324A CN100556494C (en) | 2008-05-09 | 2008-05-09 | Solvent recovery unit in the oil extraction plant tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100113324A CN100556494C (en) | 2008-05-09 | 2008-05-09 | Solvent recovery unit in the oil extraction plant tail gas |
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| Publication Number | Publication Date |
|---|---|
| CN101274152A CN101274152A (en) | 2008-10-01 |
| CN100556494C true CN100556494C (en) | 2009-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008100113324A Expired - Fee Related CN100556494C (en) | 2008-05-09 | 2008-05-09 | Solvent recovery unit in the oil extraction plant tail gas |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104807345A (en) * | 2014-01-28 | 2015-07-29 | 北京华晟环能科技有限公司 | Cooling tower contact gas condenser for waste heat generating apparatus |
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- 2008-05-09 CN CNB2008100113324A patent/CN100556494C/en not_active Expired - Fee Related
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Granted publication date: 20091104 Termination date: 20120509 |