CN112142882A - VOC device in polypropylene is taken off to vapour method - Google Patents
VOC device in polypropylene is taken off to vapour method Download PDFInfo
- Publication number
- CN112142882A CN112142882A CN202011020221.7A CN202011020221A CN112142882A CN 112142882 A CN112142882 A CN 112142882A CN 202011020221 A CN202011020221 A CN 202011020221A CN 112142882 A CN112142882 A CN 112142882A
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- CN
- China
- Prior art keywords
- steam
- plate
- polypropylene
- inverted
- voc
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 30
- -1 polypropylene Polymers 0.000 title claims abstract description 30
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 101
- 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 12
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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
Abstract
The invention discloses a device for removing VOC (volatile organic compounds) 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 material distribution 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 material distribution components and the plurality of steam distribution components are sequentially arranged in the shell at intervals from top to bottom, each material distribution component comprises a plurality of material distribution plates, each steam distribution component comprises a plurality of steam distributors and a plurality of steam supply pipes, and the steam supply pipes are used for introducing. The device for removing VOC in polypropylene by using the steam method provided by the invention improves the VOC removing effect, reduces the VOC content in polypropylene, and further meets the market requirements and the environmental protection requirements.
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
The polypropylene has the advantages of excellent mechanical property, processability and the like, is widely applied to automobile interior parts such as automobile instrument panels, control panels, door panels, seat parts, glove boxes, air conditioning systems and the like, accounts for about 40 percent of automobile plastic, and is also a main raw material of civil products such as masks and the like. At present, domestic polypropylene is mostly produced by a liquid-phase bulk polymerization method, the VOC content in the product exceeds 200ppm, and the polypropylene product releases VOC harmful to human health to different degrees at higher temperature.
GB/T27630 'guide for evaluating air quality in passenger cars' has been revised from recommended guide to mandatory national standard, and the VOC content of polypropylene is regulated to be less than 80ppm by the car and enterprise industry. Polypropylene for masks also needs to be further VOC-removed in order to reduce the taste. In order to meet market demand and environmental requirements, polypropylene manufacturers must further reduce the VOC content of polypropylene. At present, equipment for removing VOC by using nitrogen gas circulation and heating VOC indirectly by using steam is available in China, but equipment for removing VOC directly by using steam is not available.
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 the environmental protection requirements.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a device for removing VOC (volatile organic compounds) in polypropylene by a steam method, which comprises a shell, a material inlet, a material outlet, an air outlet, a plurality of material distribution 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 material distribution components and the steam distribution components are sequentially arranged in the shell at intervals from top to bottom, the material distribution components comprise a plurality of material distribution 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 material distributing plates in the same material distributing assembly are parallel to each other and are located on the same horizontal plane.
Preferably, the material distributing plate is an inverted V-shaped material distributing 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 distributing plate penetrates through one first mounting hole to extend into the shell and is arranged on the first mounting plate, and a first closed 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 porous plate fixed at the bottom of the inverted V-shaped plate, the inverted V-shaped plates in the steam distribution assembly are parallel to each other and are located on the same horizontal plane, and the adjacent inverted V-shaped plates are perpendicular to the material distribution 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 the part, located below the inverted-V-shaped plates, of the steam supply pipe.
Preferably, the steam supply pipe and the inverted V-shaped plate are perpendicular to each other.
Preferably, shells inner wall one side is provided with the second mounting panel, the opposite side of casing be provided with a plurality ofly with the corresponding second mounting hole in second mounting panel position, one steam distributor passes one the second mounting hole extends in the casing and set up in on the second mounting panel, steam distributor keeps away from the one end of second mounting panel is provided with the second and seals the baffle.
Preferably, the valve is a rotary valve.
Compared with the prior art, the invention has the following technical effects:
according to the device for removing VOC in polypropylene by using the steam method, 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, the plurality of material distribution components and the plurality of steam distribution components are sequentially arranged in the shell at intervals from top to bottom, each material distribution component comprises the plurality of material distribution plates, each steam distribution component comprises the plurality of steam distributors and the plurality of steam supply pipes, and the steam supply pipes are used for introducing steam to the steam distributors. The material gets into the casing from the material import, and the branch material effect through dividing the flitch makes the material evenly remove to the material export for material and steam fully contact, steam let in steam distributor from supplying the steam pipe, distribute through steam distributor and carry out direct heating for even steam to the material and take off VOC, and a small amount of steam through the heat transfer becomes the lime set and discharges from the material exit together with the material, carries VOC after most steam cooling and discharges from the air outlet. According to the invention, the steam is in direct contact with the material, and the steam and the material are in more sufficient contact through the material distributing plate, so that the VOC removing 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 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for removing VOC from polypropylene by a vapor process provided in the present invention;
FIG. 2 is a schematic structural diagram of a porous plate in the apparatus for removing VOC from polypropylene by vapor method.
Description of reference numerals: 1. a housing; 2. a material inlet; 3. an air outlet; 4. a material outlet; 5. a material distributing plate; 6. a steam distributor; 7. a steam supply pipe; 8. a steam supply hole; 9. a steam inlet; 10. a perforated plate; 11. a first through hole; 12. a second via.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a device for removing VOC in polypropylene by a steam method, which improves the VOC removing effect, reduces the VOC content in the polypropylene and further meets the market requirements and the environmental protection requirements.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the embodiment provides a device for removing VOC from polypropylene by a vapor method, which comprises a housing 1, a material inlet 2, a material outlet 4, an air outlet 3, a plurality of material distribution assemblies and a plurality of steam distribution assemblies, 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, and a valve is arranged on the material outlet 4, specifically, the valve is a rotary valve. A plurality of material distribution assemblies and a plurality of steam distribution assemblies are arranged in the shell 1 from top to bottom at intervals in sequence, and specifically, the part closest to the material inlet 2 is the uppermost material distribution assembly. Divide the material subassembly to include a plurality of branch flitch 5, steam distribution subassembly includes a plurality of steam distributor 6 and a plurality of steam supply pipe 7, and steam supply pipe 7 is used for letting in steam to steam distributor 6.
Specifically, the material distributing plates 5 in the same material distributing assembly are parallel to each other and are located on the same horizontal plane. The material distributing plate 5 is an inverted V-shaped material distributing plate. The material distributing effect of the inverted V-shaped material distributing plate can enable the material to uniformly move towards the discharge port, so that the material is more fully contacted with steam, material dead angles in the shell 1 can be avoided, and the material is prevented from being denatured due to too long retention time.
Specifically, casing 1 inner wall one side is provided with first mounting panel, the opposite side of casing 1 is provided with a plurality of first mounting holes corresponding with first mounting panel position, first mounting hole and branch flitch 5 structure phase-match, specifically, first mounting hole is the triangle-shaped hole, a branch flitch 5 passes a first mounting hole and extends in casing 1 and sets up on first mounting panel, the one end that divides flitch 5 to keep away from first mounting panel is provided with first closure baffle, avoid steam to be discharged by first mounting hole through setting up first closure baffle.
Specifically, the end of the material distributing plate 5 away from the first mounting plate is flush with the outer wall of the housing 1 or extends to the outside of the housing 1, so that the housing 1 provides support for the end of the material distributing plate 5. In order to make the material distributing plate 5 more stable, the material distributing plate 5 may be fixed to the first mounting plate.
Specifically, steam distributor 6 includes the perforated plate 10 that falls the V-arrangement board and be fixed in the V-arrangement board bottom that falls, and a plurality of fall V-arrangement boards in the same steam distribution subassembly are parallel to each other and are located same horizontal plane, and adjacent fall V-arrangement board and divide flitch 5 mutually perpendicular. Steam distributor 6 also can play the branch material effect for the material distributes ground more evenly, and the material can fully contact with steam, strengthens the heat transfer effect, and then promotes the effect of taking off VOC.
As shown in fig. 2, a plurality of first hole groups and a plurality of second hole groups are arranged on the porous plate 10, the first hole groups and the second hole groups are arranged in a staggered manner along the length direction of the porous plate 10, the first hole groups comprise a plurality of first through holes 11 which are sequentially arranged along the width direction of the porous plate 10, and the second hole groups comprise a plurality of second through holes 12 which are sequentially arranged along the width direction of the porous plate 10. Specifically, the diameters of the first through hole 11 and the second through hole 12 are smaller than the minimum particle size 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 both 2 cm. The included angle between one first through hole 11 in the first hole group and two adjacent second through holes 12 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 adjacent first through holes 11 in the first hole group is 60 degrees. The opening ratio of the perforated plate 10 was 30%.
Specifically, the steam supply pipe 7 extends into and penetrates through the inverted-V-shaped plates from one side of the shell 1, and a steam supply hole 8 is formed in the part, located below the inverted-V-shaped plates, of the steam supply pipe 7. One end of the steam supply pipe 7 is positioned outside the shell 1 and serves as a steam inlet 9, steam enters from the steam inlet 9 of the steam supply pipe 7 and enters the corresponding steam distributor 6 through the steam supply holes 8 and is uniformly distributed to the shell 1 through the porous plates 10, so that the steam is uniformly in direct contact with materials, and the materials are uniformly and quickly heated.
In this embodiment, the steam supply pipe 7 is perpendicular to the inverted V-shaped plate.
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 extends in casing 1 and set up on the second mounting panel, the one end that steam distributor 6 kept away from the second mounting panel is provided with the second closure flap, avoid steam to be discharged by the second mounting hole through setting up the second closure flap.
In particular, the end of the steam distributor 6 remote from the second mounting plate is flush with the outer wall of the casing 1 or extends outside the casing 1, so that the casing 1 provides support for this end of the steam distributor 6. In order to make the steam distributor 6 more stable, it is also possible to fix the steam distributor 6 to the second mounting plate.
The during operation, the material gets into casing 1 from material import 2, divide the branch material effect through minute flitch 5 to make the material evenly remove to material export 4 for the material fully contacts with steam, steam lets in steam distributor 6 from supplying steam pipe 7, distributes through steam distributor 6 and carries out direct heating and take off VOC to the material 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 after most steam cooling from air outlet 3 discharges. Specifically, air outlet 3 department is provided with the draught fan, through the flow of rotary valve control material when the material after taking off VOC is discharged from material export 4. Through making steam and material direct contact, and make the two contact more abundant through dividing flitch 5 in this embodiment, promoted and taken off VOC's effect, VOC content reduces in making the polypropylene, and then satisfies market demand and environmental protection requirement.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a VOC device in polypropylene is taken off to vapour method, its characterized in that, includes casing, material import, material export, air outlet, a plurality of material subassembly and a plurality of steam distribution subassembly of dividing, 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 in the material export, it is a plurality of divide material subassembly and a plurality of steam distribution subassembly from top to bottom interval in proper order set up in the casing, divide the material subassembly to include a plurality of branch flitchs, steam distribution subassembly includes a plurality of steam distributors and a plurality of steam supply pipe, steam supply pipe be used for to steam distributor lets in steam.
2. The apparatus of claim 1, wherein the plurality of material distributing plates in the same material distributing assembly are parallel to each other and located on the same horizontal plane.
3. The apparatus for removing VOC in polypropylene by vapor method according to claim 2, wherein said material distributing plate is an inverted V-shaped material distributing plate.
4. The apparatus according to claim 3, wherein a first mounting plate is disposed on one side of the inner wall of the housing, a plurality of first mounting holes are disposed on the other side of the housing corresponding to the first mounting plate, a material distributing plate 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 disposed at an end of the material distributing plate away from the first mounting plate.
5. The apparatus of claim 2, wherein the steam distributor comprises an inverted V-shaped plate and a perforated plate fixed to the bottom of the inverted V-shaped plate, the inverted V-shaped plates in the same steam distribution assembly are parallel to each other and located on the same horizontal plane, and the adjacent inverted V-shaped plates are perpendicular to the material distribution plate.
6. The apparatus for removing VOC from polypropylene by vapor method according to claim 5, wherein said steam supply pipe extends into and through said inverted V-shaped plates from one side of said housing, and a portion of said steam supply pipe located below said inverted V-shaped plates is provided with steam supply holes.
7. The apparatus for removing VOC's from polypropylene by vapor method according to claim 6, wherein said steam supply pipe and said inverted V-shaped plate are perpendicular to each other.
8. The apparatus of claim 5, wherein a second mounting plate is disposed on one side of the inner wall of the housing, a plurality of second mounting holes are disposed on the other side of the housing corresponding to the second mounting plate, a steam distributor 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 disposed at an end of the steam distributor away from the second mounting plate.
9. The 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 true CN112142882A (en) | 2020-12-29 |
| CN112142882B CN112142882B (en) | 2023-11-24 |
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Family Applications (1)
| 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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Cited By (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 |
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| 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》", vol. 1, 中国轻工业出版社, pages: 84 * |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN112142882B (en) | 2023-11-24 |
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