CN115818775B - Gas, liquid and solid three-phase separation method - Google Patents
Gas, liquid and solid three-phase separation method Download PDFInfo
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- CN115818775B CN115818775B CN202211672558.5A CN202211672558A CN115818775B CN 115818775 B CN115818775 B CN 115818775B CN 202211672558 A CN202211672558 A CN 202211672558A CN 115818775 B CN115818775 B CN 115818775B
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- 239000007788 liquid Substances 0.000 title claims abstract description 56
- 239000007787 solid Substances 0.000 title claims abstract description 53
- 239000007789 gas Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005191 phase separation Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 239000000843 powder Substances 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 16
- 239000002699 waste material Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 9
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 9
- 238000010025 steaming Methods 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- -1 polypropylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a gas, liquid and solid three-phase separation method, wherein raw materials discharged from a T502 water washing tower and a T501 water washing tower enter a filter cavity of a water tank through a feed inlet, then liquid carries solid particles to pass through the water tank and an internal steady flow system, the solid particles gradually float on the surface of the liquid, the solid particles can drive a spiral feeding member to rotate through driving motor rotation, the solid raw materials can be lifted through the spiral feeding member, liquid carried in fixation is filtered through a barrel-shaped filter core when the solid raw materials are lifted, so that the liquid is re-circulated into the water tank, the lifted fixed raw materials are led out from a solid raw material outlet on a shell, and gas in the water tank is discharged from a gas outlet on the shell.
Description
Technical Field
The invention relates to the technical field of polypropylene production processes, in particular to a gas, liquid and solid three-phase separation method.
Background
There is a water wash column in the production of polypropylene in both the Spheripol and the ST medium petrochemical of Basell, using a loop reactor, which mainly removes polypropylene dust from the process gas. The effluent at the bottom of the two water washing towers contains water, PP powder and partial gas, the three-phase mixture is discharged into a water pool beside the water pool through a pipeline, and most manufacturers adopting the two PP production processes currently discharge the water into the water pool to settle for a period of time, and then manually salvage the floating PP powder. The processing mode has the following defects that 1, the working environment of the site is easy to be dirty, and pp powder is easy to leak to other places in the operation process; 2 the filtering precision can not be ensured, no filtering element participates in the whole process, and the PP powder easily flows to the downstream through the overflow hole. Increasing the downstream purge pressure; 3, the on-site smell is too large, the sealing performance of the whole pool is poor, and the peculiar smell is rapidly diffused and most seriously in the process of manually fishing the powder; 4, the personnel are required to clean regularly, and the manpower is occupied; and the working environment is poor.
Disclosure of Invention
The invention aims to overcome the existing defects, and provides the gas, liquid and solid three-phase separation method which has the advantages of less human intervention, high automation degree, reduced labor intensity of workers, recycling of separated gas, liquid and solid particles, reduced waste, direct bagging of sealed separated liquid, solid and solid particles, capability of avoiding dust emission, improving field environment, reduction of environmental pollution, long-term use, no secondary pollution and effective solving of the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a gas, liquid and solid three-phase separation method,
S1) effluent generation: firstly, raw materials react through an F301 loop reaction kettle to carry out first processing reaction on polypropylene, residual catalyst in the powder is decomposed through a D501 steaming tank and a D502 drying tank in sequence, propylene, oil, HC1 and powder are contained in steam when the D501 steaming tank is used, the tops of the propylene, the oil and HC1 are respectively discharged into a T501 water scrubber, propylene and oil in the T501 water scrubber are compressed through a tail gas compressor PK501 and are sent into a tail gas recovery system after being cooled, powder, water and hydrocarbon gas discharged from the lower end of the T501 water scrubber enter into a separation device, materials at the lower end of the D501 steaming tank enter into a D502 drying tank through gravity, hot nitrogen enters from the bottom of the D502 drying tank, after the materials are dried, the materials enter into the T502 water scrubber from the top, nitrogen and the powder are washed down by washing water sprayed from the top, the water, the powder and a small amount of nitrogen are discharged into another separation device from the bottom of the T502 water scrubber, the nitrogen is cooled in the T502 water scrubber, and after the humidity is reduced, and the nitrogen is sent into the D502 for recycling after the temperature is increased;
S2) gas, liquid and solid separation: the method comprises the steps that raw materials discharged from a T502 water washing tower and a T501 water washing tower enter a filter cavity of a water tank through a feed inlet, then liquid carries solid particles to be gradually floated on the surface of the liquid through the water tank and an internal steady flow system, the solid particles can drive a spiral feeding member to rotate through driving motor, the solid raw materials can be lifted through the spiral feeding member, liquid carried in fixation is filtered through a barrel-shaped filter core when the solid raw materials are lifted, so that the liquid is returned to the water tank again, the lifted fixed raw materials are led out from a solid raw material outlet on a shell, gas in the water tank is discharged from a gas outlet on the shell, air can be directly discharged for nitrogen, gas can be collected when the gas is required to be collected, liquid in the filter cavity is filtered through a filter core partition plate and then enters a water guide cavity, and the filtered liquid is discharged through a liquid outlet, so that three-phase separation of gas, water and powder is realized;
s3) post-separation treatment: the water at the filtering position in the water tank is pumped into the T501 water scrubber and the T502 water scrubber again through the circulating pump, so that the tower top is washed, water recycling is realized, and when the inside of the water tank is cleaned, waste materials at the bottom can be led out through the waste residue outlet on the water tank.
The utility model provides a separating equipment that gas, liquid, solid three-phase separation method used, separating equipment includes water tank, filter core baffle, casing, spiral pay-off spare, driving motor and tubulose filter core, the inside of water tank is equipped with the filter core baffle, is equipped with the feed inlet to filter cavity guide material with the water tank internal portion by the filter core baffle, and the side lower extreme of water tank is equipped with the waste residue export with the water guide cavity intercommunication, the front surface of water tank is equipped with the liquid export, and the liquid export is linked together with the water guide cavity, and the upper end of water tank is equipped with sealed lid, is equipped with the casing on the sealed lid, is equipped with the gas outlet on the sealed lid, and the casing is the slope setting, and the inside of casing has the tubulose filter core through leg joint, and the lower extreme of tubulose filter core is located the inside lower extreme of filter cavity, and the inside of tubulose filter core is equipped with spiral pay-off spare, and is equipped with the driving motor that drives spiral pay-off spare pivoted to the casing on the casing, and the upper end downside of casing is equipped with solid raw materials export.
Furthermore, the waste residue outlet and the air outlet are respectively provided with a connecting conduit, and the two connecting conduits are respectively provided with a manual valve.
Further, a bracket is welded at four corners of the lower surface of the water tank, and a reinforcing plate is arranged between the side surface of the bracket and the lower surface of the water tank
Compared with the prior art, the invention has the beneficial effects that: the gas, liquid and solid three-phase separation method has the advantages of simple steps, simple and convenient operation, less human intervention of gas, liquid and solid three-phase separation, high automation degree, reduced labor intensity of workers, reduced waste, sealed liquid and solid separation and direct bagging of solid particles, capability of avoiding dust emission, improving on-site environment, reduced environmental pollution, long-term use and no secondary pollution.
Drawings
FIG. 1 is a schematic diagram of a flow structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the separation device of the present invention.
In the figure: 1 bracket, 2 water tank, 3 barrel filter core, 4 shell, 5 spiral feeding piece, 6 driving motor, 7 filter core baffle, 8 manual valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides a technical solution: a gas, liquid and solid three-phase separation method, which is a gas, liquid and solid three-phase separation method,
S1 effluent generation: firstly, raw materials react through an F301 loop reaction kettle to carry out first processing reaction on polypropylene, residual catalyst in the powder is decomposed through a D501 steaming tank and a D502 drying tank in sequence, propylene, oil, HC1 and powder are contained in steam when the D501 steaming tank is used, the tops of the propylene, the oil and HC1 are respectively discharged into a T501 water scrubber, propylene and oil in the T501 water scrubber are compressed through a tail gas compressor PK501 and are sent into a tail gas recovery system after being cooled, powder, water and hydrocarbon gas discharged from the lower end of the T501 water scrubber enter into a separation device, materials at the lower end of the D501 steaming tank enter into a D502 drying tank through gravity, hot nitrogen enters from the bottom of the D502 drying tank, after the materials are dried, the materials enter into the T502 water scrubber from the top, nitrogen and the powder are washed down by washing water sprayed from the top, the water, the powder and a small amount of nitrogen are discharged into another separation device from the bottom of the T502 water scrubber, the nitrogen is cooled in the T502 water scrubber, and after the humidity is reduced, and the nitrogen is sent into the D502 for recycling after the temperature is increased;
S2, gas, liquid and solid separation: the raw materials discharged from the T502 water washing tower and the T501 water washing tower enter the filter cavity of the water tank 2 through the feed inlet, then the liquid carries solid particles to flow through the water tank 2 and the internal steady flow system, the solid particles gradually float on the surface of the liquid, the solid particles can drive the spiral feeding member 5 to rotate through the rotation of the driving motor 6, the solid raw materials can be lifted through the spiral feeding member 5, the liquid carried in the fixing is filtered through the barrel-shaped filter core 3 when the solid raw materials are lifted, so that the liquid is refluxed to the water tank 2 again, the lifted fixed raw materials are led out from the solid raw material outlet on the shell 4, the gas in the water tank 2 is discharged from the gas outlet on the shell 4, the air can be directly discharged for nitrogen, the gas can be collected when the gas is required to be collected, the liquid in the filter cavity is filtered through the filter element baffle 7 and then the filtered liquid is discharged through the liquid outlet, and three-phase separation of the gas, the water and the powder is realized;
S3, post-separation treatment: the water at the filtering position in the water tank 2 is pumped into the T501 water washing tower and the T502 water washing tower again through the circulating pump, so that the tower top is washed, water recycling is realized, when the water tank 2 is cleaned inside, waste residue at the bottom can be led out through a waste residue outlet on the water tank 2, the steps are simple, the operation is simple and convenient, the manual intervention of gas, liquid and solid three-phase separation is less, the degree of automation is high, the labor intensity of workers is reduced, the gas, liquid and solid particles after separation can be recycled, the waste is reduced, the sealed separation liquid and solid particles are directly packaged, the on-site environment is avoided, the environmental pollution is reduced, the long-term use is realized, and the secondary pollution is avoided.
The utility model provides a separating equipment that gas, liquid, solid three-phase separation method used, separating equipment includes water tank 2, filter core baffle 3, casing 4, spiral feeding piece 5, driving motor 6 and tubbiness filter core 7, the inside of water tank 2 is equipped with filter core baffle 7, the inside of water tank 2 is divided into filter chamber and water guide chamber by filter core baffle 7, the side upper end of water tank 2 is equipped with the feed inlet to the filter chamber guide, and the side lower extreme of water tank 2 is equipped with the waste residue export with the water guide chamber intercommunication, the front surface of water tank 2 is equipped with the liquid export, the liquid export is linked together with the water guide chamber, and the upper end of water tank 2 is equipped with sealed lid, be equipped with casing 4 on the sealed lid, be equipped with the gas outlet on the sealed lid, casing 4 is for slope setting, and the inside of casing 4 has tubbiness filter core 3 through the leg connection, the lower extreme of tubbiness filter core 3 is located the inside lower extreme of filter chamber, and is equipped with spiral feeding piece 5 by the inside of filter core 3, and be equipped with driving motor 6 that drives spiral feeding piece 5 pivoted on the casing 4, and the upper end downside of casing 4 is equipped with solid raw materials export, all be equipped with on the side connection pipe, all be equipped with the valve on the gas outlet, be equipped with the manual face 1 between two sides 2 and the water tank 2, the face 1 is equipped with the face 1 down.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A gas, liquid and solid three-phase separation method is characterized in that: the separating equipment used in the gas-liquid-solid three-phase separating method comprises a water tank (2), a filter element partition plate (7), a shell (4), a spiral feeding piece (5), a driving motor (6) and a barrel-shaped filter core (3), wherein the filter element partition plate (7) is arranged in the water tank (2), the filter element partition plate (7) divides the inner part of the water tank (2) into a filter cavity and a water guide cavity, a feeding hole for guiding materials to the filter cavity is formed in the upper end of the side face of the water tank (2), a waste residue outlet communicated with the water guide cavity is formed in the lower end of the side face of the water tank (2), a liquid outlet is formed in the front surface of the water tank (2), the liquid outlet is communicated with the water guide cavity, a sealing cover is arranged at the upper end of the water tank (2), the sealing cover is provided with the shell (4), an air outlet is formed in the sealing cover, the shell (4) is obliquely arranged, the inner part of the shell (4) is connected with the barrel-shaped filter core (3) through a bracket, the lower end of the barrel-shaped filter core (3) is positioned at the inner lower end of the filter cavity, the inner part of the barrel-shaped filter core (3) is provided with the spiral feeding piece (5), the upper surface of the shell (4) is provided with the driving motor (5), and the upper end of the spiral feeding piece (5) is provided with the solid driving end (6) and the upper side of the shell;
The gas, liquid and solid three-phase separation method comprises the following specific steps:
S1) effluent generation: firstly, raw materials react through an F301 loop reaction kettle to carry out first processing reaction on polypropylene, residual catalyst in the powder is decomposed through a D501 steaming tank and a D502 drying tank in sequence, propylene, oil, HC1 and powder are contained in steam when the D501 steaming tank is used, the tops of the propylene, the oil and HC1 are respectively discharged into a T501 water scrubber, propylene and oil in the T501 water scrubber are compressed through a tail gas compressor PK501 and are sent into a tail gas recovery system after being cooled, powder, water and hydrocarbon gas discharged from the lower end of the T501 water scrubber enter into a separation device, materials at the lower end of the D501 steaming tank enter into a D502 drying tank through gravity, hot nitrogen enters from the bottom of the D502 drying tank, after the materials are dried, the materials enter into the T502 water scrubber from the top, nitrogen and the powder are washed down by washing water sprayed from the top, the water, the powder and a small amount of nitrogen are discharged into another separation device from the bottom of the T502 water scrubber, the nitrogen is cooled in the T502 water scrubber, and after the humidity is reduced, and the nitrogen is sent into the D502 for recycling after the temperature is increased;
S2) gas, liquid and solid separation: the raw materials discharged from the T502 water washing tower and the T501 water washing tower enter the filter cavity of the water tank (2) through the feed inlet, then liquid carries solid particles to be gradually floated on the surface of the liquid through the water tank (2) and the internal steady flow system, the solid particles can drive the spiral feeding member (5) to rotate through the rotation of the driving motor (6), the solid raw materials can be lifted through the spiral feeding member (5), liquid carried in fixation is filtered through the barrel-shaped filter core (3) during lifting of the solid raw materials, so that the liquid is returned to the water tank (2), the lifted fixed raw materials are led out from the solid raw material outlet on the shell (4), gas in the water tank (2) is discharged from the gas outlet on the shell (4), air can be directly discharged for nitrogen, gas can be collected when gas collection is needed, liquid in the filter cavity is filtered through the filter element baffle (7) and then the filtered liquid is discharged through the liquid outlet, and three-phase separation of gas, water and powder is realized;
S3) post-separation treatment: the water at the filtering position in the water tank (2) is pumped into the T501 water scrubber and the T502 water scrubber again through the circulating pump, so that the water scrubber is washed at the top of the tower, the water recycling is realized, and when the inside of the water tank (2) is cleaned, the waste residue on the water tank (2) can be led out through the waste residue outlet.
2. The gas, liquid and solid three-phase separation method according to claim 1, wherein the method comprises the following steps: connecting ducts are arranged on the waste residue outlet and the air outlet, and manual valves (8) are arranged on the two connecting ducts.
3. The gas, liquid and solid three-phase separation method according to claim 2, wherein the method comprises the following steps: a support (1) is welded at four corners of the lower surface of the water tank (2), and a reinforcing plate is arranged between the side surface of the support (1) and the lower surface of the water tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211672558.5A CN115818775B (en) | 2022-12-26 | 2022-12-26 | Gas, liquid and solid three-phase separation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211672558.5A CN115818775B (en) | 2022-12-26 | 2022-12-26 | Gas, liquid and solid three-phase separation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115818775A CN115818775A (en) | 2023-03-21 |
| CN115818775B true CN115818775B (en) | 2024-06-04 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021151515A1 (en) * | 2020-01-31 | 2021-08-05 | Fourphase As | Treatment of multiphase hydrocarbon-containing fluid in oil and/or gas production |
| WO2022056775A1 (en) * | 2020-09-17 | 2022-03-24 | 华东理工大学 | Deep purification device and method for methanol-to-olefin washing water |
| CN115386024A (en) * | 2022-09-19 | 2022-11-25 | 恒力石化(大连)化工有限公司 | Degassing system for polypropylene process powder and degassing process thereof |
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- 2022-12-26 CN CN202211672558.5A patent/CN115818775B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021151515A1 (en) * | 2020-01-31 | 2021-08-05 | Fourphase As | Treatment of multiphase hydrocarbon-containing fluid in oil and/or gas production |
| WO2022056775A1 (en) * | 2020-09-17 | 2022-03-24 | 华东理工大学 | Deep purification device and method for methanol-to-olefin washing water |
| CN115386024A (en) * | 2022-09-19 | 2022-11-25 | 恒力石化(大连)化工有限公司 | Degassing system for polypropylene process powder and degassing process thereof |
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| CN115818775A (en) | 2023-03-21 |
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