CN112142882B - VOC device in polypropylene is taken off to vapour method - Google Patents
VOC device in polypropylene is taken off to vapour method Download PDFInfo
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- CN112142882B CN112142882B CN202011020221.7A CN202011020221A CN112142882B CN 112142882 B CN112142882 B CN 112142882B CN 202011020221 A CN202011020221 A CN 202011020221A CN 112142882 B CN112142882 B CN 112142882B
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- distributing
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 29
- -1 polypropylene Polymers 0.000 title claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 71
- 230000008676 import Effects 0.000 claims description 4
- 239000012855 volatile organic compound Substances 0.000 abstract description 36
- 230000000694 effects Effects 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/001—Removal of residual monomers by physical means
- C08F6/005—Removal of residual monomers by physical means from solid polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a VOC (volatile organic compound) removing device in polypropylene by a steam method, which relates to the technical field of polypropylene production and comprises a shell, a material inlet, a material outlet, an air outlet, a plurality of distributing components and a plurality of steam distribution components, wherein the material inlet and the air outlet are arranged at the upper end of the shell, the material outlet is arranged at the lower end of the shell, a valve is arranged on the material outlet, the plurality of distributing components and the plurality of steam distribution components are sequentially arranged in the shell at intervals from top to bottom, the distributing components comprise a plurality of distributing plates, the steam distribution components comprise a plurality of steam distributors and a plurality of steam supply pipes, and the steam supply pipes are used for introducing steam into the steam distributors. The device for removing VOC in polypropylene by the steam method improves the VOC removing effect, reduces the VOC content in polypropylene, and further meets the market demand and the environmental protection demand.
Description
Technical Field
The invention relates to the technical field of polypropylene production, in particular to a device for removing VOC in polypropylene by a steam method.
Background
Polypropylene has the advantages of excellent mechanical properties, processability and the like, is widely used in automobile interior trim parts such as automobile instrument panels, control panels, door panels, seat parts, glove boxes, air conditioning systems and the like, and accounts for about 40% of automobile plastic, and is also a main raw material of civil products such as masks and the like. At present, domestic polypropylene is produced by a liquid phase bulk polymerization method, the VOC content in the product is over 200ppm, and the polypropylene products release VOC which is harmful to human health at higher temperature to different degrees.
GB/T27630 in-vehicle air quality evaluation guide is revised by recommended guide to mandatory national standard, and the VOC content of polypropylene is regulated to be less than 80ppm by the vehicle enterprise industry. The polypropylene for mask also needs to be further VOC-removed in order to reduce the taste. In order to meet market demands and environmental requirements, polypropylene manufacturers must further reduce the VOC content of polypropylene. At present, nitrogen is used for recycling VOC removing and steam is used for indirectly heating VOC removing equipment, but no equipment for directly removing VOC by steam exists.
Disclosure of Invention
In order to solve the technical problems, the invention provides the device for removing the VOC in the polypropylene by the steam method, which improves the VOC removing effect, reduces the VOC content in the polypropylene and further meets the market requirements and environmental protection requirements.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a VOC (volatile organic compound) removing device in polypropylene by a steam method, which comprises a shell, a material inlet, a material outlet, an air outlet, a plurality of distributing components and a plurality of steam distribution components, wherein the material inlet and the air outlet are arranged at the upper end of the shell, the material outlet is arranged at the lower end of the shell, a valve is arranged on the material outlet, the distributing components and the steam distribution components are sequentially arranged in the shell at intervals from top to bottom, the distributing components comprise a plurality of distributing plates, the steam distribution components comprise a plurality of steam distributors and a plurality of steam supply pipes, and the steam supply pipes are used for introducing steam into the steam distributors.
Preferably, a plurality of the distributing plates in the same distributing assembly are parallel to each other and positioned on the same horizontal plane.
Preferably, the material dividing plate is an inverted V-shaped material dividing plate.
Preferably, a first mounting plate is arranged on one side of the inner wall of the shell, a plurality of first mounting holes corresponding to the first mounting plate are formed in the other side of the shell, one of the distributing plates penetrates through one of the first mounting holes to extend into the shell and is arranged on the first mounting plate, and a first sealing baffle is arranged at one end, far away from the first mounting plate, of the distributing plate.
Preferably, the steam distributor comprises an inverted V-shaped plate and a perforated plate fixed at the bottom of the inverted V-shaped plate, a plurality of inverted V-shaped plates in the same steam distribution assembly are parallel to each other and positioned on the same horizontal plane, and adjacent inverted V-shaped plates are mutually perpendicular to the distributing plate.
Preferably, the steam supply pipe extends into and penetrates through the inverted V-shaped plates from one side of the shell, and a steam supply hole is formed in a portion, located below the inverted V-shaped plates, of the steam supply pipe.
Preferably, the steam supply pipe and the inverted V-shaped plate are mutually perpendicular.
Preferably, a second mounting plate is arranged on one side of the inner wall of the shell, a plurality of second mounting holes corresponding to the second mounting plate are formed in the other side of the shell, one steam distributor penetrates through one second mounting hole to extend into the shell and is arranged on the second mounting plate, and a second sealing baffle is arranged at one end, away from the second mounting plate, of the steam distributor.
Preferably, the valve is a rotary valve.
Compared with the prior art, the invention has the following technical effects:
the invention provides a vapor method for removing VOC in polypropylene, wherein a material inlet and an air outlet are arranged at the upper end of a shell, a material outlet is arranged at the lower end of the shell, a plurality of material distributing components and a plurality of vapor distributing components are sequentially arranged in the shell at intervals from top to bottom, each material distributing component comprises a plurality of material distributing plates, each vapor distributing component comprises a plurality of vapor distributors and a plurality of vapor supply pipes, and each vapor supply pipe is used for introducing vapor into each vapor distributor. The material gets into the casing from material import, makes the material evenly remove to the material export through the feed divider's of feed divider effect for material and steam fully contact, steam lets in the steam distributor from the steam supply pipe, distributes to even steam through the steam distributor and carries out direct heating to the material and take off VOC, and a small amount of steam through the heat transfer becomes the condensate and discharges from the material export together with the material, carries VOC and discharges from the air outlet after most steam cooling. According to the invention, the steam is in direct contact with the materials, and the steam and the materials are in full contact through the material separating plate, so that the VOC removal effect is improved, the VOC content in the polypropylene is reduced, and the market requirement and the environmental protection requirement are further met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a device for removing VOC in polypropylene by a vapor method;
fig. 2 is a schematic diagram of the structure of a porous plate in a device for removing VOCs in polypropylene by a vapor method.
Reference numerals illustrate: 1. a housing; 2. a material inlet; 3. an air outlet; 4. a material outlet; 5. a material dividing plate; 6. a steam distributor; 7. a steam supply pipe; 8. a steam supply hole; 9. a steam inlet; 10. a porous plate; 11. a first through hole; 12. and a second through hole.
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.
The invention aims to provide a device for removing VOC in polypropylene by a steam method, which improves the VOC removal effect, reduces the VOC content in polypropylene and further meets the market demand and the environmental protection demand.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, this embodiment provides a VOC removing device in polypropylene by vapor method, which comprises a housing 1, a material inlet 2, a material outlet 4, an air outlet 3, a plurality of material distributing components and a plurality of vapor distributing components, wherein the material inlet 2 and the air outlet 3 are arranged at the upper end of the housing 1, the material outlet 4 is arranged at the lower end of the housing 1, a valve is arranged on the material outlet 4, and specifically, the valve is a rotary valve. The plurality of distributing components and the plurality of steam distribution components are sequentially arranged in the shell 1 at intervals from top to bottom, and specifically, the component closest to the material inlet 2 is the uppermost distributing component. The distributing assembly comprises a plurality of distributing plates 5, the steam distributing assembly comprises a plurality of steam distributors 6 and a plurality of steam supply pipes 7, and the steam supply pipes 7 are used for introducing steam into the steam distributors 6.
In particular, the plurality of distributor plates 5 in the same distributor assembly are mutually parallel and located on the same horizontal plane. The material dividing plate 5 is an inverted V-shaped material dividing plate. The material can be uniformly moved to the discharge hole through the material distributing effect of the inverted V-shaped material distributing plate, so that the material is in more full contact with steam, the dead angle of the material in the shell 1 can be avoided, and the material is prevented from being denatured due to too long residence time.
Specifically, 1 inner wall one side of casing is provided with first mounting panel, and 1's opposite side is provided with a plurality of first mounting holes corresponding with first mounting panel position, and first mounting hole and branch flitch 5 structure phase-match, specifically, first mounting hole is the triangle-shaped hole, and a branch flitch 5 passes a first mounting hole and stretches into 1 in the casing and set up on first mounting panel, and the one end that branch flitch 5 kept away from first mounting panel is provided with first closure baffle, avoids steam to be discharged by first mounting hole through setting up first closure baffle.
Specifically, the end of the dividing plate 5 remote from the first mounting plate is flush with the outer wall of the housing 1 or extends outside the housing 1 such that the housing 1 provides support for this end of the dividing plate 5. In order to make the distributor plate 5 more stable, the distributor plate 5 can also be fixed to the first mounting plate.
Specifically, the steam distributor 6 comprises an inverted V-shaped plate and a perforated plate 10 fixed to the bottom of the inverted V-shaped plate, wherein a plurality of inverted V-shaped plates in the same steam distribution assembly are parallel to each other and positioned on the same horizontal plane, and adjacent inverted V-shaped plates are mutually perpendicular to the distributing plate 5. The steam distributor 6 can also play a role in distributing materials, so that the materials are distributed more uniformly, the materials can be fully contacted with steam, the heat exchange effect is enhanced, and the VOC removal effect is improved.
As shown in fig. 2, the porous plate 10 is provided with a plurality of first hole groups and a plurality of second hole groups, the first hole groups including a plurality of first through holes 11 sequentially provided in the width direction of the porous plate 10 and the second hole groups including a plurality of second through holes 12 sequentially provided in the width direction of the porous plate 10 are alternately provided in the length direction of the porous plate 10. Specifically, the diameters of the first through holes 11 and the second through holes 12 are smaller than the minimum particle diameter of the material.
In this embodiment, the distance between two adjacent first through holes 11 is 3cm, the distance between two adjacent second through holes 12 is 3cm, and the diameters of the first through holes 11 and the second through holes 12 are 2cm. The included angle between one first through hole 11 in the first hole group and two second through holes 12 adjacent to the first through hole 11 in the second hole group is 60 degrees, and the included angle between one second through hole 12 in the second hole group and two first through holes 11 adjacent to the first through hole 11 in the first hole group is 60 degrees. The aperture ratio of the porous plate 10 was 30%.
Specifically, the steam supply pipe 7 extends into and penetrates through the plurality of inverted V-shaped plates from one side of the casing 1, and a portion of the steam supply pipe 7 located below the inverted V-shaped plates is provided with steam supply holes 8. One end of the steam supply pipe 7 is positioned outside the shell 1 and used as a steam inlet 9, steam enters from the steam inlet 9 of the steam supply pipe 7, enters into the corresponding steam distributor 6 through the steam supply holes 8 and is uniformly distributed into the shell 1 through the porous plate 10, so that the steam is uniformly and directly contacted with the materials, and the materials are uniformly and rapidly heated.
In this embodiment, the steam supply pipe 7 and the inverted V-shaped plate are perpendicular to each other.
Specifically, casing 1 inner wall one side is provided with the second mounting panel, second mounting panel and first mounting panel mutually perpendicular, the opposite side of casing 1 is provided with a plurality of second mounting holes corresponding with second mounting panel position, second mounting hole and steam distributor 6 structure phase-match, specifically, the second mounting hole is the triangle-shaped hole, a steam distributor 6 passes a second mounting hole and stretches into casing 1 and set up on the second mounting panel, steam distributor 6 is kept away from the one end of second mounting panel and is provided with the second and seals the baffle, avoids steam to be discharged by the second mounting hole through setting up the second and seals the baffle.
In particular, the end of the steam distributor 6 remote from the second mounting plate is flush with the outer wall of the housing 1 or extends outside the housing 1 such that the housing 1 provides support for this end of the steam distributor 6. In order to make the steam distributor 6 more stable, the steam distributor 6 can also be fixed to the second mounting plate.
During operation, the material gets into casing 1 from material import 2, makes the material evenly remove to material export 4 through the feed-through effect of feed plate 5 for the material fully contacts with steam, and steam lets in steam distributor 6 from steam supply pipe 7, and the direct heating takes off the VOC to the material through steam distributor 6 distribution for even steam, and a small amount of steam through the heat transfer becomes the lime set and discharges from material export 4 together with the material, carries VOC to discharge from air outlet 3 after the majority steam cooling. Specifically, the air outlet 3 is provided with an induced draft fan, and the flow of the material is controlled through a rotary valve when the material subjected to VOC removal is discharged from the material outlet 4. In the embodiment, the steam is in direct contact with the materials, and the steam and the materials are in contact with each other more fully through the material separating plate 5, so that the VOC removal effect is improved, the VOC content in the polypropylene is reduced, and the market demand and the environmental protection demand are further met.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a VOC device in vapour method polypropylene that takes off, its characterized in that includes casing, material import, material export, air outlet, a plurality of components of dividing and a plurality of steam distribution subassembly, the material import with the air outlet set up in the casing upper end, the material export set up in the casing lower extreme, be provided with the valve on the material export, a plurality of components of dividing and a plurality of steam distribution subassembly from top to bottom interval in proper order set up in the casing, the components of dividing include a plurality of feed plates, the components of steam distribution includes a plurality of steam distributor and a plurality of steam supply pipe, the steam supply pipe is used for letting in steam to the steam distributor; the plurality of distributing plates in the same distributing assembly are parallel to each other and positioned on the same horizontal plane; the steam distributor comprises an inverted V-shaped plate and a porous plate fixed at the bottom of the inverted V-shaped plate, a plurality of inverted V-shaped plates in the same steam distribution assembly are parallel to each other and positioned on the same horizontal plane, and adjacent inverted V-shaped plates are mutually perpendicular to the distributing plate; the steam supply pipe extends into and penetrates through the plurality of inverted V-shaped plates from one side of the shell, and steam supply holes are formed in the portion, located below the inverted V-shaped plates, of the steam supply pipe.
2. The vapor-process VOC removal device of claim 1, wherein the knockout plate is an inverted V-shaped knockout plate.
3. The VOC removing device for vapor process polypropylene according to claim 2, wherein a first mounting plate is provided on one side of the inner wall of the housing, a plurality of first mounting holes corresponding to the first mounting plate are provided on the other side of the housing, one of the distributing plates extends into the housing through one of the first mounting holes and is disposed on the first mounting plate, and a first closing baffle is provided at one end of the distributing plate away from the first mounting plate.
4. The vapor-process VOC apparatus of claim 1 wherein said vapor supply tube is perpendicular to said inverted V-shaped plate.
5. The VOC removing device for vapor process polypropylene according to claim 1, wherein a second mounting plate is provided on one side of the inner wall of the housing, a plurality of second mounting holes corresponding to the second mounting plate are provided on the other side of the housing, one of the vapor distributors extends into the housing through one of the second mounting holes and is disposed on the second mounting plate, and a second closing baffle is provided at an end of the vapor distributor remote from the second mounting plate.
6. The vapor-process VOC apparatus of claim 1 wherein the valve is a rotary valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020221.7A CN112142882B (en) | 2020-09-25 | 2020-09-25 | VOC device in polypropylene is taken off to vapour method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011020221.7A CN112142882B (en) | 2020-09-25 | 2020-09-25 | VOC device in polypropylene is taken off to vapour method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112142882A CN112142882A (en) | 2020-12-29 |
| CN112142882B true CN112142882B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011020221.7A Active CN112142882B (en) | 2020-09-25 | 2020-09-25 | VOC device in polypropylene is taken off to vapour method |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113318468A (en) * | 2021-05-14 | 2021-08-31 | 安徽实华工程技术股份有限公司 | Production system for removing VOC (volatile organic compounds) from polyether polyol |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204767534U (en) * | 2015-07-13 | 2015-11-18 | 山东润博生物科技有限公司 | Strip dephenolize device |
| CN108466383A (en) * | 2018-03-26 | 2018-08-31 | 天华化工机械及自动化研究设计院有限公司 | A kind of PP GRANULES material takes off the system and its application process of VOC |
| CN109694421A (en) * | 2019-03-01 | 2019-04-30 | 中国石油化工股份有限公司 | A kind of heated type takes off VOC drying tower in polypropylene |
| CN109751859A (en) * | 2019-03-01 | 2019-05-14 | 天华化工机械及自动化研究设计院有限公司 | A kind of gas heated type takes off VOC drying tower in polypropylene |
-
2020
- 2020-09-25 CN CN202011020221.7A patent/CN112142882B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204767534U (en) * | 2015-07-13 | 2015-11-18 | 山东润博生物科技有限公司 | Strip dephenolize device |
| CN108466383A (en) * | 2018-03-26 | 2018-08-31 | 天华化工机械及自动化研究设计院有限公司 | A kind of PP GRANULES material takes off the system and its application process of VOC |
| CN109694421A (en) * | 2019-03-01 | 2019-04-30 | 中国石油化工股份有限公司 | A kind of heated type takes off VOC drying tower in polypropylene |
| CN109751859A (en) * | 2019-03-01 | 2019-05-14 | 天华化工机械及自动化研究设计院有限公司 | A kind of gas heated type takes off VOC drying tower in polypropylene |
Non-Patent Citations (1)
| Title |
|---|
| 刘洁.《稻谷加工工艺与设备》.中国轻工业出版社,2018,(第1版),第84页. * |
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| CN112142882A (en) | 2020-12-29 |
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