CN101934210A - Carbonylation reactor suitable for industrial production of ethylene glycol - Google Patents
Carbonylation reactor suitable for industrial production of ethylene glycol Download PDFInfo
- Publication number
- CN101934210A CN101934210A CN 201010279477 CN201010279477A CN101934210A CN 101934210 A CN101934210 A CN 101934210A CN 201010279477 CN201010279477 CN 201010279477 CN 201010279477 A CN201010279477 A CN 201010279477A CN 101934210 A CN101934210 A CN 101934210A
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- CN
- China
- Prior art keywords
- end socket
- low head
- ethylene glycol
- jacket
- upper cover
- Prior art date
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Abstract
The invention relates to a carbonylation reactor suitable for industrial production of ethylene glycol, which is used for equipment for producing ethylene glycol. The reactor comprises a barrel and the like, wherein the upper and lower ends of the barrel are threaded with upper and lower end sockets respectively; clapboards are arranged between the barrel and the upper end socket as well as between the barrel and the lower end socket respectively; a tube nest is filled in the cavity of the barrel and inserted into the clapboard; the upper end socket is provided with a raw material gas inlet; the lower end of the lower end socket is provided with a product gas outlet; the upper part of the upper end socket is provided with a reaction temperature measuring port; the upper and lower parts of a barrel wall are provided with hot water outlet and inlet respectively; a catalyst is filled in each tube nest; the lower end socket is filled with two layers of ceramic balls; the bottom end of the lower end socket is provided with an end socket jacket; the end socket jacket is provided with jacket steam inlet and outlet; an interlayer is communicated with the jacket steam inlet and outlet; and the product gas outlet passes through the end socket jacket. The bottom end of the tube nest is provided with the end socket jacket, steam or hot water can be introduced into the end socket jacket when the temperature falls and the temperature is kept over 60 DEG C, so that the problem that dimethyl oxalate in the current reactor is easy to crystallize when the temperature falls.
Description
Technical field
The present invention relates to a kind of oxonation device, refer to a kind of industrial oxonation device of ethylene glycol that is applicable to especially.
Background technology
At present, the required intermediate product dimethyl oxalate (COOCH of China's ethylene glycol industrial production
3)
2To produce mainly be in the oxonation device, by oxonation 2CH
3ONO+2CO--→ (COOCH
3)
2+ 2NO generates.As shown in Figure 1, this reactor comprises a cylindrical shell 10 ', upper cover 4 ' and low head 5 ', on the cylindrical shell 10 ', the lower end is spirally connected with low head 5 ' by flange and upper cover 4 ' respectively and is fixed together, be respectively arranged with dividing plate between cylindrical shell 10 ' and upper cover 4 ' and the low head 5 ', dividing plate is provided with several through holes, cylindrical shell 10 ' inner chamber is filled several vertical tubulations 1 ' vertically, on each vertical tubulation 1 ', the lower end is placed through respectively on the through hole of dividing plate, the upper end of upper cover 4 ' is provided with raw material gas inlet 2 ', the lower end of low head 5 ' is provided with product gas outlet 3 ', the top of upper cover 4 ' is provided with reaction temperature temperature-measuring port 9 ', on the cylindrical shell 10 ' wall, the bottom is respectively equipped with hot water outlet 6 ' and hot water inlet 7 ', in each tubulation 1 ' Pd/Al is housed
2O
3Catalyst is filled with the two-layer porcelain ball 8 ' of DN10 and DN25 different size in the low head 5 ', porcelain ball 8 ' plays insulation effect.Reactor feed gas CH
3ONO and CO enter from upper cover 4 ', under 135 ℃ constant temperature, through Pd/Al
2O
3Catalyst reaction generates dimethyl oxalate, derives from low head 5 ' and enters down operation.
The boiling point of dimethyl oxalate under normal pressure is 167.4 ℃, and fusing point is 54.0 ℃.Such as parking, the temperature of reactor just can descend under the improper condition of production, even if the porcelain ball 8 ' in the low head 5 ' can accumulation of heat, but also be difficult to long term maintenance, in case when temperature was lower than 54.0 ℃, dimethyl oxalate just can crystallization, cause porcelain ball 8 ' inter-adhesive, caking stops up; In addition, when device is driven, by the crystallization of dioxalic acid dimethyl ester, porcelain ball 8 ' inter-adhesive caking stops up, and just must introduce interim thermal source such as steam or hot water or the like from the external world, and the crystallization block part is heated, mediation, certainly will prolong the driving time like this, also increase workman's manipulation strength simultaneously, also can threaten sometimes people's safety.
Summary of the invention
The object of the present invention is to provide a kind of industrial oxonation device of ethylene glycol that is applicable to, it prevents the dimethyl oxalate crystallization in the time of descending in the temperature of reactor, avoid the porcelain ball bonding of reactor bottom, caking stops up dangerous in using of end socket and chemical industry personnel.
To achieve these goals, technical solution of the present invention is: a kind of industrial oxonation device of ethylene glycol that is applicable to, comprise cylindrical shell, upper cover and low head, on the described cylindrical shell, the lower end is spirally connected by flange and upper cover and low head respectively and is fixed together, be respectively arranged with dividing plate between described cylindrical shell and upper cover and the low head, described dividing plate is provided with several through holes, described cylinder lumen is filled several vertical tubulations vertically, on described each tubulation, the lower end is placed through respectively on the through hole of dividing plate, the upper end of described upper cover is provided with raw material gas inlet, the lower end of described low head is provided with product gas outlet, the top of described upper cover is provided with the reaction temperature temperature-measuring port, on the described barrel wall, the bottom is respectively equipped with hot water outlet and hot water inlet, in described each tubulation Pd/Al is housed
2O
3Catalyst, be filled with the two-layer porcelain ball of DN10 and DN25 in the described low head, the bottom of wherein said low head is provided with the end socket chuck, be provided with interlayer in the described end socket chuck, described end socket chuck is provided with the jacket steam import and export, described interlayer communicates with described jacket steam import and export, and described end socket chuck middle part is provided with through hole, and described product gas outlet is passed described through hole.
The present invention is applicable to the industrial oxonation device of ethylene glycol, fits in the bottom surface of wherein said end socket chuck upper surface and described low head, and described end socket chuck and described low head weld together.
The present invention is applicable to the industrial oxonation device of ethylene glycol, and wherein said jacket steam import and export is symmetrically set in the left and right sides of described through hole.
After adopting such scheme, the present invention is applicable to that the industrial oxonation device of ethylene glycol is by being provided with the end socket chuck in the low head bottom, when temperature of reactor descends, steam or hot water are fed by the jacket steam import in the interlayer of end socket chuck,, keep temperature to be higher than 60 ℃ by end socket chuck heating low head, can prevent the crystallization of dimethyl oxalate, avoid the porcelain ball bonding of reactor bottom, caking stops up end socket and has guaranteed that simultaneously the chemical industry personnel's is safe in utilization.
Description of drawings
Fig. 1 is the structural representation of existing oxonation device;
Fig. 2 is the structural representation that the present invention is applicable to the industrial oxonation device of ethylene glycol;
Fig. 3 is the upward view of Fig. 2.
Below in conjunction with accompanying drawing, the present invention is described further by embodiment.
The specific embodiment
See also Fig. 2 and shown in Figure 3, the present invention is applicable to the industrial oxonation device of ethylene glycol, comprise cylindrical shell 13, upper cover 4 and low head 5, on the cylindrical shell 13, the lower end is spirally connected by flange and upper cover 4 and low head 5 respectively and is fixed together, be respectively arranged with dividing plate between cylindrical shell 13 and upper cover 4 and the low head 5, dividing plate is provided with several through holes, cylindrical shell 13 inner chambers are filled several vertical tubulations 1 vertically, on each tubulation 1, the lower end is placed through respectively on the through hole of dividing plate, the upper end of upper cover 4 is provided with raw material gas inlet 2, the lower end of low head 5 is provided with product gas outlet 3, the top of upper cover 4 is provided with reaction temperature temperature-measuring port 14, on cylindrical shell 13 walls, the bottom is respectively equipped with hot water outlet 6 and hot water inlet 7, in each tubulation 1 Pd/Al is housed
2O
3Catalyst, be filled with the two-layer porcelain ball 15 of DN10 and DN25 different size in the low head 5, the bottom of low head 5 is provided with end socket chuck 8, be provided with interlayer 9 in the end socket chuck 8, end socket chuck 8 is provided with jacket steam import 10 and jacket steam outlet 11, interlayer 9 and jacket steam import 10, jacket steam outlet 11 communicates, end socket chuck 8 middle parts are provided with through hole 12, product gas outlet 3 is passed through hole 12, jacket steam import 10 and jacket steam outlet 11 are symmetrically set in the left and right sides of through hole 12, fit in the bottom surface of end socket chuck 8 upper surfaces and low head 5, end socket chuck 8 welds together with low head 5.
When the present invention causes temperature of reactor to reduce when the reactor irregular working, steam or hot water are fed in the interlayer 9 of end socket chuck 8 by jacket steam import 10 at this point, by end socket chuck 8 heating low head 5 and cylindrical shells 13, keep cylindrical shell 13 interior temperature to be higher than 60 ℃, can prevent the crystallization of dimethyl oxalate, avoided the porcelain ball of reactor bottom inter-adhesive simultaneously, caking stops up end socket.When device is driven, can shorten the time of normal driving again, alleviate chemical industry personnel's manipulation strength, avoided occurring the possibility of security incident.
The above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. one kind is applicable to the industrial oxonation device of ethylene glycol, comprise cylindrical shell (13), upper cover (4) and low head (5), on the described cylindrical shell (13), the lower end is spirally connected by flange and upper cover (4) and low head (5) respectively and is fixed together, be respectively arranged with dividing plate between described cylindrical shell (13) and upper cover (4) and the low head (5), described dividing plate is provided with several through holes, described cylindrical shell (13) inner chamber is filled several vertical tubulations (1) vertically, on described each tubulation (1), the lower end is placed through respectively on the through hole of dividing plate, the upper end of described upper cover (4) is provided with raw material gas inlet (2), the lower end of described low head (5) is provided with product gas outlet (3), the top of described upper cover (4) is provided with reaction temperature temperature-measuring port (14), on described cylindrical shell (13) wall, the bottom is respectively equipped with hot water outlet (6) and hot water inlet (7), in described each tubulation (1) Pd/Al is housed
2O
3Catalyst, be filled with the two-layer porcelain ball of DN10 and DN25 (15) in the described low head (5), it is characterized in that: the bottom of described low head (5) is provided with end socket chuck (8), be provided with interlayer (9) in the described end socket chuck (8), described end socket chuck (8) is provided with jacket steam import and export (10,11), described interlayer (9) and described jacket steam import and export (10,11) communicate, described end socket chuck (8) middle part is provided with through hole (12), and described product gas outlet (3) is passed described through hole (12).
2. the industrial oxonation device of ethylene glycol that is applicable to as claimed in claim 1 is characterized in that: fit in the bottom surface of described end socket chuck (8) upper surface and described low head (5), and described end socket chuck (8) welds together with described low head (5).
3. the industrial oxonation device of ethylene glycol that is applicable to as claimed in claim 2, it is characterized in that: described jacket steam import and export (10,11) is symmetrically set in the left and right sides of described through hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010279477 CN101934210B (en) | 2010-09-13 | 2010-09-13 | Carbonylation reactor suitable for industrial production of ethylene glycol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010279477 CN101934210B (en) | 2010-09-13 | 2010-09-13 | Carbonylation reactor suitable for industrial production of ethylene glycol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101934210A true CN101934210A (en) | 2011-01-05 |
| CN101934210B CN101934210B (en) | 2013-01-09 |
Family
ID=43387923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010279477 Active CN101934210B (en) | 2010-09-13 | 2010-09-13 | Carbonylation reactor suitable for industrial production of ethylene glycol |
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| Country | Link |
|---|---|
| CN (1) | CN101934210B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516031A (en) * | 2011-11-23 | 2012-06-27 | 安徽淮化股份有限公司 | Method and device system for preventing DMO (dimethyl oxalate) from curing in ethylene glycol industrial production |
| WO2012113268A1 (en) * | 2011-02-25 | 2012-08-30 | 中国石油化工股份有限公司 | Ethylene glycol preparation method |
| CN102898305A (en) * | 2012-10-30 | 2013-01-30 | 安徽淮化股份有限公司 | Dimethyl oxalate rectifying equipment |
| CN108817849A (en) * | 2018-04-28 | 2018-11-16 | 哈尔滨锅炉厂有限责任公司 | A kind of dense holes end enclosure structure and its manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225038A (en) * | 2008-02-03 | 2008-07-23 | 陕西煤业化工技术开发中心有限责任公司 | Method for preparing acetic anhydride and acetic acid by multi-component carbonylation |
| CN201855686U (en) * | 2010-09-13 | 2011-06-08 | 安徽淮化股份有限公司 | Carbonylation reactor suitable for industrial production of ethylene glycol |
-
2010
- 2010-09-13 CN CN 201010279477 patent/CN101934210B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225038A (en) * | 2008-02-03 | 2008-07-23 | 陕西煤业化工技术开发中心有限责任公司 | Method for preparing acetic anhydride and acetic acid by multi-component carbonylation |
| CN201855686U (en) * | 2010-09-13 | 2011-06-08 | 安徽淮化股份有限公司 | Carbonylation reactor suitable for industrial production of ethylene glycol |
Non-Patent Citations (2)
| Title |
|---|
| 《基本有机化工生产及工艺》 20060630 陈性永等 基本有机化工生产及工艺 , 第2版 * |
| 《甲醇及其衍生物》 20020630 谢克昌等 甲醇及其衍生物 , 第1版 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012113268A1 (en) * | 2011-02-25 | 2012-08-30 | 中国石油化工股份有限公司 | Ethylene glycol preparation method |
| US8962895B2 (en) | 2011-02-25 | 2015-02-24 | China Petroleum & Chemical Corporation | Method for the production of ethylene glycol |
| CN102516031A (en) * | 2011-11-23 | 2012-06-27 | 安徽淮化股份有限公司 | Method and device system for preventing DMO (dimethyl oxalate) from curing in ethylene glycol industrial production |
| CN102516031B (en) * | 2011-11-23 | 2014-03-12 | 安徽淮化股份有限公司 | Method and device system for preventing DMO (dimethyl oxalate) from curing in ethylene glycol industrial production |
| CN102898305A (en) * | 2012-10-30 | 2013-01-30 | 安徽淮化股份有限公司 | Dimethyl oxalate rectifying equipment |
| CN108817849A (en) * | 2018-04-28 | 2018-11-16 | 哈尔滨锅炉厂有限责任公司 | A kind of dense holes end enclosure structure and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101934210B (en) | 2013-01-09 |
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Effective date of registration: 20210222 Address after: 201102 rooms 615-618, 6th floor, T1 / F, chengkai center, Lane 166, Minhong Road, Minhang District, Shanghai Patentee after: PUJING CHEMICAL INDUSTRY (SHA)LIMITED Address before: 232038 Anhui Huainan Tian Jia An District Quanshan Anhui Huaihua Limited by Share Ltd technology research and Development Center Patentee before: ANHUI HUAIHUA CHEMICAL GROUP Co.,Ltd. |