CN202322670U - Anti-curing device system for dimethyl oxalate in industrial production of glycol - Google Patents
Anti-curing device system for dimethyl oxalate in industrial production of glycol Download PDFInfo
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- CN202322670U CN202322670U CN201120467305.5U CN201120467305U CN202322670U CN 202322670 U CN202322670 U CN 202322670U CN 201120467305 U CN201120467305 U CN 201120467305U CN 202322670 U CN202322670 U CN 202322670U
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- dimethyl oxalate
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Abstract
The utility model discloses an anti-curing device system for dimethyl oxalate (DMO) in the industrial production of glycol. The system comprises a dimethyl oxalate synthesis reactor and a circulating water system which is used for collecting reaction heat, wherein the circulating water system comprises a high-temperature steam pipeline, a hot water circulating pump and a low-pressure steam flash tank, the high-temperature steam pipeline is connected to a hot water storage tank by using a temperature control and regulation device, and the temperature control and regulation device comprises a temperature regulation valve and a temperature control instrument; and the hot water storage tank is connected with an external jacket of a dimethyl oxalate conveying pipe through a circulating pump and a hot water pipeline. A reaction byproduct, namely steam is utilized, so the energy consumption is low, and the cost of the glycol is reduced; the problem that the DMO is easy to cure in a pipeline is completely solved, so that the long-period stable operation of the production is ensured; and the water temperature of the jacket can be accurately controlled, so that the stable long-period production of the industrialized production device is facilitated.
Description
Technical field
The utility model relates to industriallization synthetic gas preparing ethylene glycol project, is specifically related to the anti-solidification equipment system of terepthaloyl moietie industrial production mesoxalic acid dimethyl ester.
Background technology
In the terepthaloyl moietie industrial installation,, terepthaloyl moietie generates because being intermediate product dimethyl oxalate (DMO) hydrogenation reaction.Dimethyl oxalate is colourless monoclinic crystal, and 57 ℃ of fusing points are solid at normal temperatures.In suitability for industrialized production, it is liquid mobile in pipeline requiring DMO.And most existing synthetic gas preparing ethylene glycol device adopts is that the LP steam of the 0.3MPa pipe steam of keeping company prevents that DMO from solidifying in pipeline.One of shortcoming is in the fabrication and installation process that the steam companion manages, and blind spot can occur, in use accompanies the interior DMO of process pipeline of pipe rapid curing to spread.Two of shortcoming is that the controllability of vapor temperature is poor, receives external influence factor more.Three of shortcoming is that energy consumption is big.
The utility model content
The purpose of the utility model is to provide low, the anti-DMO solidification effect of a kind of energy consumption the good and stable anti-solidification equipment system of terepthaloyl moietie industrial production mesoxalic acid dimethyl ester that is prone to adjusting.
The dimethyl oxalate that the utility model provides is prevented the solidification equipment system; Comprise dimethyl oxalate synthesis reactor and the circulating water system that is used to collect reaction heat; Said circulating water system comprises high temperature steam pipeline, hot water circulting pump and LP steam flash drum; Said high temperature steam pipeline is connected to the hot water storage tank through temperature-control adjustment device, and said temperature-control adjustment device comprises temperature control valve (TCV) and temperature control instrument; Said hot water storage tank is connected the peripheral hardware chuck of dimethyl oxalate transport pipe with the hot water line through recycle pump.
The described dimethyl oxalate of the utility model is prevented the solidification equipment system, and wherein, said hot water storage tank is connected with the subsequent use steam of low pressure, does not prepare against when reactive system has byproduct steam under the driving initial stage or the situation of stopping in emergency and uses.
The synthetic DMO reaction of the utility model utilization liberated heat attaches producing steam and sets up a hot water station, is used for the jacket water (J.W.) insulation of DMO process pipeline.Because it is an irreversible strong exothermal reaction that the CO linked reaction prepares DMO, reaction heat has reached 159kJ/mol, and production l rams the loose soil with a stone-roller after sowing DMO can attach O.7 ton of producing steam.And anti-curing of the terepthaloyl moietie industrial production mesoxalic acid dimethyl ester that adopts the utility model carries the beneficial effect of charging process and apparatus system promptly to be: (1) utilizes reaction to attach producing steam, and energy consumption is little, has reduced the cost of terepthaloyl moietie.(2) thoroughly solve DMO and in pipeline, be prone to the solidified phenomenon, guaranteed the long-period stable operation of producing.(3) the chuck water temperature can accurately be controlled, and helps the stable LP production of industrial production device.
Description of drawings
Accompanying drawing is the anti-solidification equipment system schematic of the utility model terepthaloyl moietie industrial production mesoxalic acid dimethyl ester.
Among the figure: 1, DMO synthesis reactor; 2, high temperature steam pipeline; 3, technology soft water; 4,1.0MPa steam; 5, LP steam flash drum; 6, temperature control valve (TCV); 7, temperature control instrument; 8, hot water storage tank; 9, the subsequent use steam of low pressure; 10, DMO peripheral hardware chuck return water pipe; 11, DMO pipeline peripheral hardware chuck; 12, DMO peripheral hardware chuck water inlet pipe; 13, recycle pump; 14, hot water circulting pump.
Embodiment
The dimethyl oxalate that the utility model provides is prevented the solidification equipment system; Comprise dimethyl oxalate synthesis reactor 1 and the circulating water system that is used to collect reaction heat; Wherein, circulating water system comprises high temperature steam pipeline 2, hot water circulting pump 14 and LP steam flash drum 5, and wherein high temperature steam pipeline 2 is connected to hot water storage tank 8 through temperature control valve (TCV) 6 and temperature control instrument (Tl) 7; Hot water storage tank 8 is connected the peripheral hardware chuck 11 of dimethyl oxalate transport pipe with the hot water line through recycle pump 13; Simultaneously, hot water storage tank 8 also is connected with the subsequent use steam of low pressure (0.3MPa) 9, does not prepare against when reactive system has byproduct steam under the driving initial stage or the situation of stopping in emergency and uses.
The utility model can utilize the oxonation byproduct steam to add thermochemical processes soft water 3 as thermal source; Using temperature control valve (TCV) and temperature control instrument to control hot water storage tank temperature through the control vapor flow rate is 80 ℃; To satisfy the temperature requirement of DMO materail tube line jacket water (J.W.), thoroughly solve DMO and be prone to a solidified industriallization difficult problem.Reactive system does not have byproduct steam under the driving initial stage or the situation of stopping in emergency, so it is subsequent use to join a short steam pipe.All jacket water (J.W.) backwater return the hot water storage tank, form closed cycle, arrive each place that needs insulation with the recycle pump delivering hot water then, in pipeline, are prone to the solidified phenomenon thereby thoroughly solved DMO, help the stable LP production of industrial production device.
Claims (2)
1. terepthaloyl moietie industrial production mesoxalic acid dimethyl ester is prevented the solidification equipment system; Comprise dimethyl oxalate synthesis reactor and the circulating water system that is used to collect reaction heat; Said circulating water system comprises high temperature steam pipeline, hot water circulting pump and LP steam flash drum; It is characterized in that: said high temperature steam pipeline is connected to the hot water storage tank through temperature-control adjustment device, and said temperature-control adjustment device comprises temperature control valve (TCV) and temperature control instrument; Said hot water storage tank is connected the peripheral hardware chuck of dimethyl oxalate transport pipe with the hot water line through recycle pump.
2. apparatus system as claimed in claim 1 is characterized in that: said hot water storage tank is connected with the subsequent use steam of low pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120467305.5U CN202322670U (en) | 2011-11-23 | 2011-11-23 | Anti-curing device system for dimethyl oxalate in industrial production of glycol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120467305.5U CN202322670U (en) | 2011-11-23 | 2011-11-23 | Anti-curing device system for dimethyl oxalate in industrial production of glycol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202322670U true CN202322670U (en) | 2012-07-11 |
Family
ID=46434658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120467305.5U Withdrawn - After Issue CN202322670U (en) | 2011-11-23 | 2011-11-23 | Anti-curing device system for dimethyl oxalate in industrial production of glycol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202322670U (en) |
Cited By (2)
| 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 |
| CN102898305A (en) * | 2012-10-30 | 2013-01-30 | 安徽淮化股份有限公司 | Dimethyl oxalate rectifying equipment |
-
2011
- 2011-11-23 CN CN201120467305.5U patent/CN202322670U/en not_active Withdrawn - After Issue
Cited By (3)
| 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140312 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20140312 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |