CN115818775A - Gas, liquid and solid three-phase separation method - Google Patents
Gas, liquid and solid three-phase separation method Download PDFInfo
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- CN115818775A CN115818775A CN202211672558.5A CN202211672558A CN115818775A CN 115818775 A CN115818775 A CN 115818775A CN 202211672558 A CN202211672558 A CN 202211672558A CN 115818775 A CN115818775 A CN 115818775A
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- 239000007787 solid Substances 0.000 title claims abstract description 56
- 239000007788 liquid Substances 0.000 title claims abstract description 51
- 239000007789 gas Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 21
- 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
- 238000005406 washing Methods 0.000 claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 19
- 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
- 239000002699 waste material Substances 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 238000005192 partition 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
- 239000000463 material Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 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 3
- 230000009467 reduction Effects 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 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
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (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 the liquid carries solid particles to pass through the water tank and an internal steady flow system, the solid particles gradually float on the liquid surface, the solid particles can drive a screw feeding piece to rotate through the rotation of a driving motor, the solid raw materials can be lifted through the screw feeding piece, the liquid carried in the fixing is filtered through a barrel-shaped filter core during the lifting of the solid raw materials, so that the liquid flows back to the water tank again, the lifted fixed raw materials are led out from a solid raw material outlet on a shell, and the 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-solid three-phase separation method.
Background
A water washing tower exists in the polypropylene production process of Spheripol and ST of a medium petrochemical industry of Basell which adopt a loop reaction kettle, and the water washing tower mainly removes polypropylene dust in process gas. The bottom discharge of the two washing towers contains water, PP powder and partial gas, the three-phase mixture is discharged into a nearby water pool through a pipeline, most manufacturers adopting the two PP production processes at present manually salvage floating PP powder after discharging the water into the pool and settling for a period of time. The treatment 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 filtration precision cannot be ensured, no filter 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 odor on site is too big, the sealing performance of the whole pool is poor, and the peculiar smell is diffused quickly and most seriously in the manual powder fishing process; 4, the cleaning is carried out regularly by personnel, and the labor is occupied; and the working environment is poor.
Disclosure of Invention
The invention aims to overcome the existing defects and provides a gas, liquid and solid three-phase separation method, which has the advantages of less human intervention in gas, liquid and solid three-phase separation, high automation degree, reduction of the labor intensity of workers, recycling of gas, liquid and solid particles after separation, reduction of waste, sealing of separated liquid, solid and solid particles, direct bagging of the solid particles, prevention of dust raising, improvement of site environment, reduction of environmental pollution, long-term use and no secondary pollution, and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a gas, liquid and solid three-phase separation method,
s1) effluent generation: the method comprises the following steps that firstly, raw materials react through an F301 loop reaction kettle to carry out primary processing reaction on polypropylene, the reacted powder sequentially passes through a D501 steam evaporation tank and a D502 drying tank to decompose residual catalysts in the powder, when the D501 steam evaporation tank is used, steam contains propylene, oil, HC1 and powder, the propylene, the oil and the HC1 are discharged from the tops of the D501 steam evaporation tank and enter a T501 water washing tower respectively, the propylene and the oil in the T501 water washing tower are cooled and then are compressed by a tail gas compressor PK501 and sent to a tail gas recovery system, the powder, the water and hydrocarbon gas discharged from the lower end of the T501 water washing tower enter a separating device, the material at the lower end of the D501 steam evaporation tank enters a D502 drying tank by virtue of gravity, hot nitrogen enters the bottom of the D502 drying tank and enters the T502 water washing tower after the material is dried, the nitrogen and the top of the T502 water washing tower are washed by washing water sprayed from the top of the T502 water washing tower, water, the powder and a small amount of nitrogen are discharged into another separating device from the bottom of the separating device, the T502 water washing tower and the nitrogen are cooled and the nitrogen is sent to be used after the humidity is reduced and then circularly pressurized and heated and used;
s2) gas, liquid and solid separation: 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 the liquid carries solid particles to pass through the water tank and an internal steady flow system, the solid particles gradually float on the liquid surface, the solid particles can drive a spiral feeding piece to rotate through the rotation of a driving motor, the solid raw materials can be lifted through the spiral feeding piece, the liquid carried in the fixation is filtered through a barrel-shaped filter core when the solid raw materials are lifted, so that the liquid flows back into the water tank again, the lifted fixed raw materials are led out from a solid raw material outlet on a shell, the gas in the water tank is discharged from a gas outlet on the shell, nitrogen can be directly discharged into air, the gas can be collected when the gas is required to be collected, the liquid in the filter cavity enters a water guide cavity after being filtered through a filter element partition plate, and then the filtered liquid is discharged through the liquid outlet, so that the three-phase separation of the gas, the water and the powder is realized;
s3) separation post-treatment: the water of filtration department passes through the circulating pump again the suction to inside T501 washing tower and the T502 washing tower in the water tank to this makes the top of the tower carry out the washing, realizes the hydrologic cycle and recycles, when the inside clearance of water tank, can derive the bottom waste material through the waste residue export on the water tank.
A separation device used in a gas-liquid-solid three-phase separation method comprises a water tank, a filter element partition plate, a shell, a spiral feeding piece, a driving motor and a barrel-shaped filter element, wherein the filter element partition plate is arranged inside the water tank and divides the inside of the water tank into a filter cavity and a water guide cavity, a feed inlet for guiding materials to the filter cavity is formed in the upper end of the side surface of the water tank, a waste residue outlet communicated with the water guide cavity is formed in the lower end of the side surface of the water tank, a liquid outlet is formed in the front surface of the water tank and communicated with the water guide cavity, a sealing cover is arranged at the upper end of the water tank and provided with the shell, an air outlet is formed in the sealing cover, the shell is arranged in an inclined mode and is connected with the barrel-shaped filter element through a support, the lower end of the barrel-shaped filter element is located at the lower end of the inside of the filter cavity, the spiral feeding piece is arranged inside of the barrel-shaped filter element, the shell is provided with the driving motor for driving the spiral feeding piece to rotate, and a solid raw material outlet is formed in the lower side of the upper end of the shell.
Furthermore, connecting pipes are arranged on the waste residue outlet and the gas outlet, and manual valves are arranged on the two connecting pipes.
Furthermore, a support 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 support and the lower surface of the water tank
Compared with the prior art, the invention has the beneficial effects that: the gas-liquid-solid three-phase separation method has the advantages of simple steps, simplicity and convenience in operation, less human intervention in gas-liquid-solid three-phase separation, high automation degree, reduction in labor intensity of workers, recycling of gas, liquid and solid particles after separation, reduction in waste, direct bagging of the gas-liquid-solid particles, prevention of dust raising, improvement of site environment, reduction in environmental pollution, long-term use and no secondary pollution.
Drawings
FIG. 1 is a schematic view of the flow structure of the present invention;
FIG. 2 is a schematic view of the structure of the separation apparatus of the present invention.
In the figure: the filter comprises a support 1, a water tank 2, a barrel-shaped filter element 3, a shell 4, a spiral feeding piece 5, a driving motor 6, a filter element partition plate 7 and a manual valve 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a gas, liquid and solid three-phase separation method,
s1 effluent generation: the method comprises the following steps that firstly, raw materials react through an F301 loop reaction kettle to carry out primary processing reaction on polypropylene, the reacted powder sequentially passes through a D501 steam evaporation tank and a D502 drying tank to decompose residual catalysts in the powder, when the D501 steam evaporation tank is used, steam contains propylene, oil, HC1 and powder, the propylene, the oil and the HC1 are discharged from the tops of the D501 steam evaporation tank and enter a T501 water washing tower respectively, the propylene and the oil in the T501 water washing tower are cooled and then are compressed by a tail gas compressor PK501 and sent to a tail gas recovery system, the powder, the water and hydrocarbon gas discharged from the lower end of the T501 water washing tower enter a separating device, the material at the lower end of the D501 steam evaporation tank enters a D502 drying tank by virtue of gravity, hot nitrogen enters the bottom of the D502 drying tank and enters the T502 water washing tower after the material is dried, the nitrogen and the top of the T502 water washing tower are washed by washing water sprayed from the top of the T502 water washing tower, water, the powder and a small amount of nitrogen are discharged into another separating device from the bottom of the separating device, the T502 water washing tower and the nitrogen are cooled and the nitrogen is sent to be used after the humidity is reduced and then circularly pressurized and heated and used;
s2, gas, liquid and solid separation: raw materials discharged from a T502 water washing tower and a T501 water washing tower enter a filter cavity of a water tank 2 through a feed inlet, then the liquid carries solid particles to pass through the water tank 2 and an internal steady flow system, the solid particles gradually float on the liquid surface, the solid particles can drive a spiral feeding piece 5 to rotate through the rotation of a driving motor 6, the solid raw materials can be lifted through the spiral feeding piece 5, the liquid carried in the fixing is filtered through a barrel-shaped filter element 3 when the solid raw materials are lifted, so that the liquid flows back into the water tank 2 again, the lifted fixed raw materials are led out from a solid raw material outlet on a shell 4, gas in the water tank 2 is discharged from a gas outlet on the shell 4, nitrogen can be directly discharged into air, the gas can be collected when the gas is required to be collected, the liquid in the filter cavity enters a water guide cavity after being filtered through a filter element partition plate 7, and then the filtered liquid is discharged through a liquid outlet, so that the three-phase separation of the gas, the water and the powder is realized;
s3, separation post-treatment: water of filter department in the water tank 2 is through inside the circulating pump suction T501 water scrubber and T502 water scrubber again, so that the top of the tower carries out the washing, realize the water cycle and recycle, when 2 inside clearance of water tank, can derive the bottom waste material through the waste residue export on the water tank 2, the step is simple, and is easy and simple to handle, gas, liquid, solid three-phase separation human intervention is few, degree of automation is high, reduce workman intensity of labour, leave back gas, liquid and solid particle recycle, reduce the waste, airtight separating liquid, it is solid, the direct bagging-off of solid particle, avoid the raise dust to improve site environment, reduce environmental pollution, can use for a long time, no secondary pollution.
The utility model provides a gas, liquid, the splitter that solid three-phase separation method used, splitter includes water tank 2, filter core baffle 3, casing 4, spiral pay-off 5, driving motor 6 and tubbiness filter core 7, the inside of water tank 2 is equipped with filter core baffle 7, divide into filter chamber and water guide chamber with water tank 2 inside 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 water guide chamber intercommunication, the front surface of water tank 2 is equipped with the liquid outlet, the liquid outlet is linked together with the water guide chamber, and the upper end of water tank 2 is equipped with sealed lid, sealed covering is equipped with casing 4, sealed covering is equipped with the gas outlet, casing 4 is the slope setting, and the inside of casing 4 has tubbiness filter core 3 through the leg joint, the lower extreme of tubbiness filter core 3 is located the inside lower extreme of filter chamber, tubbiness filter core 3's inside is equipped with spiral pay-off 5, and be equipped with spiral pay-off 5 pivoted driving motor 6 on casing 4, and casing 4's upper end downside is equipped with the solid raw materials export, all be equipped with the connecting conduit on waste residue export and gas outlet, two connecting conduit, the lower surface of water tank 2 is equipped with manual valve 1 and the reinforcing plate support of the welding between the lower surface of the support 1, the support of water tank 2, the lower surface of the support.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A gas, liquid and solid three-phase separation method is characterized in that:
s1) effluent generation: the method comprises the following steps that firstly, raw materials react through an F301 loop reaction kettle to carry out primary processing reaction on polypropylene, the reacted powder sequentially passes through a D501 steam evaporation tank and a D502 drying tank to decompose residual catalysts in the powder, when the D501 steam evaporation tank is used, steam contains propylene, oil, HC1 and powder, the propylene, the oil and the HC1 are discharged from the tops of the D501 steam evaporation tank and enter a T501 water washing tower respectively, the propylene and the oil in the T501 water washing tower are cooled and then are compressed by a tail gas compressor PK501 and sent to a tail gas recovery system, the powder, the water and hydrocarbon gas discharged from the lower end of the T501 water washing tower enter a separating device, the material at the lower end of the D501 steam evaporation tank enters a D502 drying tank by virtue of gravity, hot nitrogen enters the bottom of the D502 drying tank and enters the T502 water washing tower after the material is dried, the nitrogen and the top of the T502 water washing tower are washed by washing water sprayed from the top of the T502 water washing tower, water, the powder and a small amount of nitrogen are discharged into another separating device from the bottom of the separating device, the T502 water washing tower and the nitrogen are cooled and the nitrogen is sent to be used after the humidity is reduced and then circularly pressurized and heated and used;
s2) gas, liquid and solid separation: raw materials discharged from a T502 water washing tower and a T501 water washing tower enter a filter cavity of a water tank (2) through a feeding hole, then the liquid carries solid particles to pass through the water tank (2) and an internal steady flow system, the solid particles gradually float on the liquid surface, the solid particles can drive a spiral feeding piece (5) to rotate through the rotation of a driving motor (6), the solid raw materials can be lifted through the spiral feeding piece (5), the liquid carried in the fixing is filtered through a barrel-shaped filter core (3) when the solid raw materials are lifted, so that the liquid flows back to the water tank (2) again, the lifted fixed raw materials are led out from a solid raw material outlet on a shell (4), the gas in the water tank (2) is discharged from a gas outlet on the shell (4), nitrogen can be directly discharged into air, the gas can be collected when the gas needs to be collected, the liquid in the filter cavity enters a water guide cavity after being filtered through a partition plate (7), and then the filtered liquid is discharged through the liquid outlet, so that the three-phase separation of the gas, the water and the powder is realized;
s3) separation post-treatment: inside water of filter department passes through the circulating pump in water tank (2) and re-intakes T501 washing tower and T502 washing tower to this makes the top of the tower wash, realizes the water cycle and recycles, when water tank (2) inside clearance, can derive bottom waste material through the waste residue export on water tank (2).
2. The separation equipment used in the gas, liquid and solid three-phase separation method according to claim 1, characterized in that: the separation equipment comprises a water tank (2), a filter element partition plate (3), a shell (4), a spiral feeding piece (5), a driving motor (6) and a barrel-shaped filter element (7), wherein the filter element partition plate (7) is arranged inside the water tank (2), the filter element partition plate (7) divides the inside of the water tank (2) into a filter cavity and a water guide cavity, a feed inlet 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 shell (4) is arranged on the sealing cover, an air outlet is formed in the sealing cover, the shell (4) is arranged in an inclined mode, the barrel-shaped filter element (3) is connected inside through a support, the lower end of the barrel-shaped filter element (3) is located at the lower end of the filter cavity, the spiral feeding piece (5) is arranged inside the barrel-shaped filter element (3), and a solid raw material outlet is formed in the lower side of the shell (4) which is arranged on the shell (4).
3. The separation equipment used in the gas, liquid and solid three-phase separation method according to claim 2, characterized in that: and the waste residue outlet and the gas outlet are both provided with connecting pipes, and the two connecting pipes are both provided with manual valves (8).
4. The separation equipment used in the gas, liquid and solid three-phase separation method according to claim 2, characterized in that: a support (1) is welded at four corners of the lower surface of the water tank (2), and reinforcing plates are arranged between the side faces 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 | Gas, liquid and solid three-phase separation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211672558.5A CN115818775B (en) | 2022-12-26 | Gas, liquid and solid three-phase separation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115818775A true CN115818775A (en) | 2023-03-21 |
| CN115818775B 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 |
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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