CN115746175A - Technology for removing VOC (volatile organic compounds) from polybutylene small body powder - Google Patents
Technology for removing VOC (volatile organic compounds) from polybutylene small body powder Download PDFInfo
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- CN115746175A CN115746175A CN202111033488.4A CN202111033488A CN115746175A CN 115746175 A CN115746175 A CN 115746175A CN 202111033488 A CN202111033488 A CN 202111033488A CN 115746175 A CN115746175 A CN 115746175A
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- kettle
- cauldron
- negative pressure
- powder
- pipeline
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- 239000000843 powder Substances 0.000 title claims abstract description 52
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 23
- 229920001748 polybutylene Polymers 0.000 title claims abstract description 12
- -1 polybutylene Polymers 0.000 title claims abstract description 11
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 10
- 229920001083 polybutene Polymers 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 3
- 238000007701 flash-distillation Methods 0.000 claims 6
- 238000003795 desorption Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 34
- 230000008020 evaporation Effects 0.000 abstract description 34
- 238000006116 polymerization reaction Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 6
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 239000008213 purified water Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 239000013589 supplement Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a technology for removing VOC (volatile organic compounds) from polybutylene small-body powder, which comprises a polymerization kettle, a flash evaporation kettle, a negative pressure temperature raising kettle, a cooling and conveying kettle, a vacuum pump, a nitrogen cylinder, a water heater and a conveying fan. The invention belongs to the technical field of resin materials, and particularly relates to a process for removing VOC (volatile organic compounds) from small polybutylene bulk powder by using a negative pressure high temperature method to remove VOC in the powder.
Description
Technical Field
The invention belongs to the technical field of resin materials, and particularly relates to a technology for removing VOC (volatile organic compounds) from polybutylene small-body powder.
Background
The domestic small bulk polybutene-1 product series is one of the most favorable products competing with foreign polybutene products, but the problem of large odor of polybutene product processing pipes in recent years always restricts the competitive advantage of the polybutene product processing pipes with the foreign products.
Disclosure of Invention
In order to solve the problems, the invention provides a technology for removing VOC (volatile organic compounds) from small polybutylene bulk powder by using a negative pressure high temperature method to remove VOC in the powder.
In order to realize the functions, the technical scheme adopted by the invention is as follows: a technology for removing VOC from small polybutylene bulk powder comprises a polymerization kettle, a flash evaporation kettle, a negative pressure temperature raising kettle, a cooling conveying kettle, a vacuum pump, a nitrogen bottle, a water heater and a conveying fan, wherein the flash evaporation kettle is communicated with the polymerization kettle through a pipeline, a low-pressure steam pipe is arranged on the flash evaporation kettle, low-pressure steam is sprayed into the flash evaporation kettle through the low-pressure steam pipe, the residual catalyst on the powder is deactivated, the powder is discharged into the flash evaporation kettle after being reacted by the polymerization kettle, the negative pressure temperature raising kettle is communicated with the flash evaporation kettle through a pipeline, the cooling conveying kettle is communicated with the negative pressure temperature raising kettle through a pipeline, a certain amount of purified water is added into the cooling conveying kettle through an external purified water pipe of the purified water pipe, the temperature in the powder is reduced through the evaporation heat absorption principle of water, the vacuum pump pipeline is respectively communicated with the flash evaporation kettle, the negative pressure temperature raising kettle and the cooling conveying kettle, vacuumizing a flash evaporation kettle, a negative pressure temperature raising kettle and a cooling conveying kettle, wherein nitrogen bottle pipelines are respectively communicated with the flash evaporation kettle, the negative pressure temperature raising kettle and the cooling conveying kettle and can supplement nitrogen to enable the flash evaporation kettle, the negative pressure temperature raising kettle and the cooling conveying kettle to return to positive pressure, a water heater pipeline is communicated with a negative pressure temperature raising kettle jacket and a negative pressure temperature raising kettle inner bin and is used for conveying hot water for raising temperature, powder is discharged into the flash evaporation kettle through the communicated pipelines after the reaction of a polymerization kettle is completed, the flash evaporation kettle is vacuumized to-0.06 MPa by a vacuum pump, low-pressure steam is sprayed into the flash evaporation kettle through a low-pressure steam pipe to deactivate catalyst residues remained on the powder, a nitrogen bottle supplements nitrogen into the flash evaporation kettle to positive pressure through the communicated pipelines after the treatment is completed, the nitrogen bottle is pressed into the negative pressure raising kettle by utilizing pressure difference, the vacuum pump pumps the negative pressure raising kettle to-0.08 MPa to the negative pressure raising kettle immediately after the powder enters the negative pressure raising kettle, and maintaining negative pressure all the time, simultaneously introducing hot water of 95-100 ℃ into a jacket of the negative pressure temperature raising kettle through a communicated pipeline by a water heater, introducing the hot water into a bin in the negative pressure temperature raising kettle, raising the temperature of materials in the negative pressure temperature raising kettle to 90-93 ℃, stirring through a specific stirring structure in the negative pressure temperature raising kettle, naturally turning and flowing the front and rear sections of powder in the kettle back and forth, staying the powder in the negative pressure temperature raising kettle for 2 hours, supplementing nitrogen into the negative pressure temperature raising kettle by a nitrogen bottle after 2 hours, feeding the powder into the cooling conveying kettle by the nitrogen to supplement the micro positive pressure by using pressure difference, pumping the water content in the powder into the cooling conveying kettle by a vacuum pump after the powder enters the cooling conveying kettle to minus 0.08MPa, then feeding a certain amount of purified water into the cooling conveying kettle through a water purification pipe, reducing the temperature in the powder by the evaporation heat absorption principle of water, immediately pumping and pumping the powder out by a vacuum pump after the water is evaporated into water vapor, wherein the powder is continuously pumped out from 90-93 ℃, and then the nitrogen is delivered to 75 ℃ to the storage bin under the condition of feeding the nitrogen to the nitrogen.
Furthermore, each communicating pipeline is provided with an electromagnetic valve which are controlled independently.
Further, conveying fan is arranged at the position of a conveying pipeline opening of the cooling conveying kettle, and the treated powder is conveyed to a storage bin conveniently.
The invention adopts the structure to obtain the following beneficial effects: the process for removing VOC from small polybutylene bulk powder comprises the steps of arranging a flash evaporation kettle, discharging the powder into the flash evaporation kettle through a communicated pipeline after the powder is reacted in a polymerization kettle, vacuumizing the flash evaporation kettle to-0.06 MPa by a vacuum pump, spraying low-pressure steam into the flash evaporation kettle through a low-pressure steam pipe, deactivating catalyst residues remained on the powder, arranging a negative pressure temperature raising kettle, immediately vacuumizing the negative pressure temperature raising kettle to-0.08 MPa by the vacuum pump after the powder enters the negative pressure temperature raising kettle, maintaining the negative pressure, introducing hot water with the temperature of 95-100 ℃ into a jacket of the negative pressure temperature raising kettle through the communicated pipeline by a water heater, introducing the hot water into a bin in the negative pressure temperature raising kettle, raising the temperature of the material in the negative pressure raising kettle to 90-93 ℃, the powder stays in the negative pressure temperature raising kettle for 2 hours, through the arrangement of the cooling conveying kettle, the vacuum pump pumps the cooling conveying kettle to-0.08 MPa after the powder enters the cooling conveying kettle, a certain amount of purified water is supplemented into the cooling conveying kettle through a water purifying pipe, the temperature in the powder is reduced through the evaporation and heat absorption principle of water, the powder is vacuumized and extracted through the vacuum pump immediately after being evaporated into steam, the water content in the powder is not high, the powder can be supplemented with purified water through continuous 2 times of vacuumizing, the temperature of the powder can be reduced from 90-93 ℃ to 70-75 ℃, and after the conveying condition is met, a nitrogen bottle supplements nitrogen to slight positive pressure in the cooling conveying kettle and starts to convey the powder to a storage bin.
Drawings
FIG. 1 is a process flow diagram of a process for removing VOC from small bulk powder of polybutene according to the present invention.
The system comprises a polymerization kettle 1, a flash evaporation kettle 2, a negative pressure temperature raising kettle 3, a cooling conveying kettle 4, a vacuum pump 5, a nitrogen gas bottle 6, a water heater 7, a conveying fan 8, a low-pressure steam pipe 9, a low-pressure steam pipe 10, a water purifying pipe 11 and an electromagnetic valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the technology for removing VOC from the polybutene small body powder comprises a polymerization kettle 1, a flash evaporation kettle 2, a negative pressure temperature raising kettle 3, a cooling conveying kettle 4, a vacuum pump 5, a nitrogen bottle 6, a water heater 7 and a conveying fan 8, wherein the flash evaporation kettle 2 is communicated with the polymerization kettle 1 through a pipeline, a low-pressure steam pipe 9 is arranged on the flash evaporation kettle 2, the negative pressure temperature raising kettle 3 is communicated with the flash evaporation kettle 2 through a pipeline, the cooling conveying kettle 4 is communicated with the negative pressure temperature raising kettle 3 through a pipeline, a water purifying pipe 10 is arranged on the cooling conveying kettle 4, the vacuum pump 5 is respectively communicated with the flash evaporation kettle 2, the negative pressure temperature raising kettle 3 and the cooling conveying kettle 4 through pipelines, the nitrogen bottle 6 is respectively communicated with the flash evaporation kettle 2, the negative pressure temperature raising kettle 3 and the cooling conveying kettle 4 through a pipeline, and the water heater 7 is communicated with an inner bin of the negative pressure temperature raising kettle 3 in a jacket of the negative pressure temperature raising kettle 3.
Each communicating pipeline is provided with an electromagnetic valve 11.
Conveying fan 8 is arranged at the conveying pipeline opening of the cooling conveying kettle 4.
When the device is used, powder is discharged into a flash evaporation kettle 2 through a communicated pipeline after the reaction of a polymerization kettle 1 is finished, the flash evaporation kettle 2 is vacuumized to-0.06 MPa by a vacuum pump 5, low-pressure steam is sprayed into the flash evaporation kettle 2 through a low-pressure steam pipe 9 to deactivate catalyst residues remained on the powder, nitrogen is supplemented into the flash evaporation kettle 2 to positive pressure through a communicated pipeline by a nitrogen bottle 6 after the treatment is finished, the nitrogen is pressed into a negative pressure temperature raising kettle 3 by utilizing pressure difference, when the powder enters the negative pressure temperature raising kettle 3, the vacuum pump 5 immediately pumps negative pressure into the negative pressure temperature raising kettle 3 to-0.08 MPa and maintains the negative pressure all the time, meanwhile, a water heater 7 introduces hot water with the temperature of 95-100 ℃ into a jacket of the negative pressure temperature raising kettle 3 through the communicated pipeline and simultaneously introduces the hot water into a bin in the negative pressure raising kettle 3 to raise the temperature of materials in the negative pressure raising kettle 3 to 90-93 ℃, and the materials are stirred through a specific stirring structure in the negative pressure raising kettle 3, the front section and the rear section of the powder in the kettle naturally turn and flow back and forth, the powder stays in the negative pressure temperature raising kettle 3 for 2 hours, after 2 hours, the nitrogen bottle 6 supplements nitrogen into the negative pressure temperature raising kettle 3, the nitrogen supplements to micro positive pressure, the powder enters the temperature reduction conveying kettle 4 by utilizing pressure difference, after the powder enters the temperature reduction conveying kettle 4, the vacuum pump 5 pumps the negative pressure of the temperature reduction conveying kettle 4 to-0.08 MPa, then a certain amount of purified water is supplemented into the temperature reduction conveying kettle 4 through the water purification pipe 10, the temperature in the powder is reduced through the evaporation heat absorption principle of water, the vacuum pump 5 pumps the water immediately after the water is evaporated into steam, the high water content in the powder cannot be caused, the nitrogen is supplemented into the temperature reduction conveying kettle 4 from 90-93 ℃ to 70-75 ℃ through continuous 2 times of vacuum pumping, the nitrogen is supplemented into the nitrogen bottle 6 after the conveying conditions, and starting to convey to a storage bin.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A technology for removing VOC (volatile organic compounds) from polybutylene small body powder is characterized by comprising the following steps: including little body powder desorption VOC's of polybutene technology, carry temperature cauldron, cooling including polymeric kettle, flash distillation cauldron, negative pressure and carry cauldron, vacuum pump, nitrogen cylinder, water heater and conveying fan, flash distillation cauldron and polymeric kettle pipeline intercommunication, be equipped with the low pressure steam pipe on the flash distillation cauldron, temperature cauldron and flash distillation cauldron pipeline intercommunication are carried to the negative pressure, temperature cauldron pipeline intercommunication is carried with the negative pressure to the cooling, be equipped with the water purification pipe on the cooling carries the cauldron, the vacuum pump pipeline feeds through respectively in flash distillation cauldron, negative pressure carries the temperature cauldron and the cooling carries the cauldron, the nitrogen cylinder pipeline feeds through respectively in flash distillation cauldron, negative pressure carries the temperature cauldron and the cooling carries the cauldron, the water heater pipeline feeds through in the negative pressure carries the interior storehouse of temperature cauldron with the negative pressure in the cauldron press from both sides cover.
2. The process for removing VOC from small polybutylene bulk powder as claimed in claim 1, wherein the process comprises the following steps: each communicating pipeline is provided with an electromagnetic valve.
3. The process for removing VOC from small polybutylene bulk powder as claimed in claim 2, wherein the process comprises the following steps: conveying fan is arranged at the conveying pipeline opening of the cooling conveying kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033488.4A CN115746175A (en) | 2021-09-03 | 2021-09-03 | Technology for removing VOC (volatile organic compounds) from polybutylene small body powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111033488.4A CN115746175A (en) | 2021-09-03 | 2021-09-03 | Technology for removing VOC (volatile organic compounds) from polybutylene small body powder |
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| Publication Number | Publication Date |
|---|---|
| CN115746175A true CN115746175A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111033488.4A Pending CN115746175A (en) | 2021-09-03 | 2021-09-03 | Technology for removing VOC (volatile organic compounds) from polybutylene small body powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115746175A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB842690A (en) * | 1957-06-29 | 1960-07-27 | Saint Gobain | An improved process and apparatus for carrying out mass polymerisation |
| JP3011254U (en) * | 1994-11-17 | 1995-05-23 | 基嗣 須加 | Devolatilizer for polymer solution |
| JP2013155894A (en) * | 2012-01-27 | 2013-08-15 | Tlv Co Ltd | Steam heating device |
| CN205398524U (en) * | 2016-02-16 | 2016-07-27 | 山东东方宏业化工有限公司 | Processing apparatus behind polybutylene powder |
| CN106366246A (en) * | 2016-08-29 | 2017-02-01 | 江苏亚泰化工有限公司 | Pyridine-styrene-butadiene rubber latex and preparation method thereof |
| CN111777703A (en) * | 2020-05-29 | 2020-10-16 | 南京金陵塑胶化工有限公司 | Polypropylene flash evaporation process |
| CN111790317A (en) * | 2020-05-29 | 2020-10-20 | 天华化工机械及自动化研究设计院有限公司 | System and method for deeply removing VOC (volatile organic compounds) and drying polypropylene material |
| WO2021047545A1 (en) * | 2019-09-09 | 2021-03-18 | 中国科学院上海有机化学研究所 | Polymer impurity removal method based on steam distillation |
-
2021
- 2021-09-03 CN CN202111033488.4A patent/CN115746175A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB842690A (en) * | 1957-06-29 | 1960-07-27 | Saint Gobain | An improved process and apparatus for carrying out mass polymerisation |
| JP3011254U (en) * | 1994-11-17 | 1995-05-23 | 基嗣 須加 | Devolatilizer for polymer solution |
| JP2013155894A (en) * | 2012-01-27 | 2013-08-15 | Tlv Co Ltd | Steam heating device |
| CN205398524U (en) * | 2016-02-16 | 2016-07-27 | 山东东方宏业化工有限公司 | Processing apparatus behind polybutylene powder |
| CN106366246A (en) * | 2016-08-29 | 2017-02-01 | 江苏亚泰化工有限公司 | Pyridine-styrene-butadiene rubber latex and preparation method thereof |
| WO2021047545A1 (en) * | 2019-09-09 | 2021-03-18 | 中国科学院上海有机化学研究所 | Polymer impurity removal method based on steam distillation |
| CN111777703A (en) * | 2020-05-29 | 2020-10-16 | 南京金陵塑胶化工有限公司 | Polypropylene flash evaporation process |
| CN111790317A (en) * | 2020-05-29 | 2020-10-20 | 天华化工机械及自动化研究设计院有限公司 | System and method for deeply removing VOC (volatile organic compounds) and drying polypropylene material |
Non-Patent Citations (2)
| Title |
|---|
| KOYAMA, TOSHIYUKI 等: "Development of an environmentally acceptable volatile organic compounds recovery and reuse system based on vacuum spray flash with dibasic acid esters as absorbents.", 《JOURNAL OF ENVIRONMENTAL SCIENCES》, vol. 21, 1 January 2009 (2009-01-01), pages 149 - 53 * |
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