CN109265632B - 一种多聚甲醛的制备方法 - Google Patents
一种多聚甲醛的制备方法 Download PDFInfo
- Publication number
- CN109265632B CN109265632B CN201811065396.2A CN201811065396A CN109265632B CN 109265632 B CN109265632 B CN 109265632B CN 201811065396 A CN201811065396 A CN 201811065396A CN 109265632 B CN109265632 B CN 109265632B
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- CN
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- Prior art keywords
- paraformaldehyde
- drying
- gas
- temperature
- formaldehyde
- Prior art date
- 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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- 229920006324 polyoxymethylene Polymers 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 165
- 238000001035 drying Methods 0.000 claims abstract description 154
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 137
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 137
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000005469 granulation Methods 0.000 claims abstract description 33
- 230000003179 granulation Effects 0.000 claims abstract description 33
- 239000007921 spray Substances 0.000 claims abstract description 32
- 239000007864 aqueous solution Substances 0.000 claims abstract description 17
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 83
- 238000001816 cooling Methods 0.000 claims description 48
- 239000008098 formaldehyde solution Substances 0.000 claims description 39
- 229910052757 nitrogen Inorganic materials 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 29
- 239000001301 oxygen Substances 0.000 claims description 29
- 229910052760 oxygen Inorganic materials 0.000 claims description 29
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 238000007603 infrared drying Methods 0.000 claims description 12
- 239000007790 solid phase Substances 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 11
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000112 cooling gas Substances 0.000 claims description 7
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 239000000047 product Substances 0.000 claims 5
- 239000012467 final product Substances 0.000 claims 1
- 238000001694 spray drying Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 22
- 239000000463 material Substances 0.000 description 19
- 239000011552 falling film Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/08—Polymerisation of formaldehyde
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/28—Post-polymerisation treatments
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims (8)
Priority Applications (1)
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CN201811065396.2A CN109265632B (zh) | 2018-09-12 | 2018-09-12 | 一种多聚甲醛的制备方法 |
Applications Claiming Priority (1)
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CN201811065396.2A CN109265632B (zh) | 2018-09-12 | 2018-09-12 | 一种多聚甲醛的制备方法 |
Publications (2)
Publication Number | Publication Date |
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CN109265632A CN109265632A (zh) | 2019-01-25 |
CN109265632B true CN109265632B (zh) | 2020-01-03 |
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Family Applications (1)
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CN201811065396.2A Active CN109265632B (zh) | 2018-09-12 | 2018-09-12 | 一种多聚甲醛的制备方法 |
Country Status (1)
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CN (1) | CN109265632B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109970532A (zh) * | 2019-04-25 | 2019-07-05 | 镇江李长荣高性能材料有限公司 | 一种多聚甲醛生产用添加剂 |
CN110204743A (zh) * | 2019-05-07 | 2019-09-06 | 镇江李长荣高性能材料有限公司 | 一种多聚甲醛生产工艺 |
CN117143303A (zh) * | 2023-06-12 | 2023-12-01 | 安徽瑞柏新材料有限公司 | 一种多聚甲醛的生产工艺方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE679754A (zh) * | 1966-04-20 | 1966-10-03 | ||
CN1252109C (zh) * | 2004-02-26 | 2006-04-19 | 四川大学 | 高甲醛含量的多聚甲醛的制备方法 |
CN102443121A (zh) * | 2011-10-31 | 2012-05-09 | 江苏恒茂机械制造有限公司 | 一种多聚甲醛生产工艺 |
CN104130360A (zh) * | 2014-07-21 | 2014-11-05 | 江苏凯茂石化科技有限公司 | 一种多聚甲醛生产工艺方法 |
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2018
- 2018-09-12 CN CN201811065396.2A patent/CN109265632B/zh active Active
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CN109265632A (zh) | 2019-01-25 |
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Effective date of registration: 20231117 Address after: No. 869, Jianshe South Street, Jizhou District, Hengshui City, Hebei Province 053200 Patentee after: HENGSHUI YINHE CHEMICAL CO.,LTD. Address before: 471200, No. 3, East Second Row, Woyun Street, Chengguan Town, Ruyang County, Luoyang City, Henan Province Patentee before: Luoyang Shuangguan Network Technology Co.,Ltd. Effective date of registration: 20231117 Address after: 471200, No. 3, East Second Row, Woyun Street, Chengguan Town, Ruyang County, Luoyang City, Henan Province Patentee after: Luoyang Shuangguan Network Technology Co.,Ltd. Address before: 400 000 No. 174 Zhengjie, Shapingba District, Chongqing Patentee before: Chongqing University |