CN103275037B - The method of a kind of rich ethylene oxide cycle water full gear - Google Patents
The method of a kind of rich ethylene oxide cycle water full gear Download PDFInfo
- Publication number
- CN103275037B CN103275037B CN201310215182.XA CN201310215182A CN103275037B CN 103275037 B CN103275037 B CN 103275037B CN 201310215182 A CN201310215182 A CN 201310215182A CN 103275037 B CN103275037 B CN 103275037B
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- China
- Prior art keywords
- ethylene oxide
- cycle water
- oxide cycle
- rich ethylene
- water
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000001704 evaporation Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract 2
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 1
- 239000001763 2-hydroxyethyl(trimethyl)azanium Substances 0.000 description 1
- 235000019743 Choline chloride Nutrition 0.000 description 1
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 1
- KGWDUNBJIMUFAP-KVVVOXFISA-N Ethanolamine Oleate Chemical compound NCCO.CCCCCCCC\C=C/CCCCCCCC(O)=O KGWDUNBJIMUFAP-KVVVOXFISA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229960003178 choline chloride Drugs 0.000 description 1
- SGMZJAMFUVOLNK-UHFFFAOYSA-M choline chloride Chemical compound [Cl-].C[N+](C)(C)CCO SGMZJAMFUVOLNK-UHFFFAOYSA-M 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- -1 ethoxy compound Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention is the method for a kind of rich ethylene oxide cycle water full gear, belongs to chemical technology field.The method of a kind of rich ethylene oxide cycle water of the present invention full gear, is characterized in that: comprise the following steps: a, injection: injected from stripping tower top by rich ethylene oxide cycle water, rich ethylene oxide cycle water flows to the bottom of stripping tower; B, heating evaporation are discharged: rich ethylene oxide cycle water is heated by Steam reboiler, oxyethane is evaporated in the form of a vapor from water, then discharges from stripper top; C, to deviate from: the aldehyde material contained in the water that evaporation is remaining is delivered to outside stripping tower by this column bottoms pump.Full gear processing cost of the present invention is low, energy consumption is little.
Description
Technical field
The invention belongs to chemical technology field, relate to the method for a kind of rich ethylene oxide cycle water full gear.
Background technology
As everyone knows, oxyethane is a kind of important chemical intermediate, and most oxyethane is used to manufacture other chemical, mainly ethylene glycol.The main end-use of ethylene glycol produces polyester polymers, is also used as automotive coolant and frostproofer.Secondly for the production of ethoxy compound, thanomin, glycol ether, ethyleneamines, glycol ether, triglycol, multiethylene-glycol, Natvosol, choline chloride 60, oxalic dialdehyde, the derived product such as vinyl carbonate.Visible its is had many uses general, but in many situations, has strict requirement to the purity of oxyethane, very big to subsequent product quality influence.Acetaldehyde is the isomers of oxyethane, and the aldehyde material deviate from based on acetaldehyde is one of main task of oxyethane chemical purification.The method of conventional oxyethane full gear adds aldehyde removing agent and its generation chemical reaction, generates the product be easily separated with oxyethane.But the full gear processing cost of this method is high, energy consumption greatly, quite uneconomical.
Summary of the invention
For the deficiency existed in background technology, the object of the present invention is to provide the method for a kind of rich ethylene oxide cycle water full gear.
For achieving the above object, the invention provides following technical scheme: the method for a kind of rich ethylene oxide cycle water full gear, comprises the following steps:
A, injection: injected from stripping tower top by rich ethylene oxide cycle water, rich ethylene oxide cycle water flows to the bottom of stripping tower;
B, heating evaporation are discharged: rich ethylene oxide cycle water is heated by Steam reboiler, oxyethane is evaporated in the form of a vapor from water, then discharges from stripper top;
C, to deviate from: the aldehyde material contained in the water that evaporation is remaining is delivered to outside stripping tower by this column bottoms pump.
In step a, described rich ethylene oxide cycle water is injected from stripping tower top by pipeline.
In stepb, described rich ethylene oxide cycle water is when Steam reboiler is heated to 135 DEG C-137 DEG C, and oxyethane is evaporated in the form of a vapor from water.
In stepb, the steam consumption of described Steam reboiler is controlled by the switch size of variable valve.
The action of above-mentioned variable valve be by stripping tower bottom the instrument measurement Temperature Feedback of temperature sensing point control.
The present invention's beneficial effect compared to existing technology: full gear processing cost of the present invention is low, energy consumption is little.
Accompanying drawing explanation
Fig. 1 is step schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, to the specific embodiment of the present invention as preferred detailed description.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the method for a kind of rich ethylene oxide cycle water full gear, comprises the following steps:
A, injection: injected from stripping tower top by rich ethylene oxide cycle water, rich ethylene oxide cycle water flows to the bottom of stripping tower;
B, heating evaporation are discharged: rich ethylene oxide cycle water is heated by Steam reboiler, oxyethane is evaporated in the form of a vapor from water, then discharges from stripper top;
C, to deviate from: the aldehyde material contained in the water that evaporation is remaining is delivered to outside stripping tower by this column bottoms pump.
In step a, described rich ethylene oxide cycle water is injected from stripping tower top by pipeline.
In stepb, described rich ethylene oxide cycle water is when Steam reboiler is heated to 135 DEG C-137 DEG C, and oxyethane is evaporated in the form of a vapor from water.
In stepb, the steam consumption of described Steam reboiler is controlled by the switch size of variable valve.
The action of above-mentioned variable valve be by stripping tower bottom the instrument measurement Temperature Feedback of temperature sensing point control.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle, makes some improvement and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a method for rich ethylene oxide cycle water full gear, is characterized in that: comprise the following steps:
A, injection: injected from stripping tower top by rich ethylene oxide cycle water, rich ethylene oxide cycle water flows to the bottom of stripping tower;
B, heating evaporation are discharged: rich ethylene oxide cycle water is heated by Steam reboiler, oxyethane is evaporated in the form of a vapor from water, then discharges from stripper top; Described rich ethylene oxide cycle water is when Steam reboiler is heated to 135 DEG C-137 DEG C, and oxyethane is evaporated in the form of a vapor from water; The steam consumption of described Steam reboiler is controlled by the switch size of variable valve;
C, to deviate from: the aldehyde material contained in the water that evaporation is remaining is delivered to outside stripping tower by this column bottoms pump.
2. the method for rich ethylene oxide cycle water according to claim 1 full gear, is characterized in that: in step a, and described rich ethylene oxide cycle water is injected from stripping tower top by pipeline.
3. the method for rich ethylene oxide cycle water according to claim 1 full gear, is characterized in that: the action of described variable valve be by stripping tower bottom the instrument measurement Temperature Feedback of temperature sensing point control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215182.XA CN103275037B (en) | 2013-05-31 | 2013-05-31 | The method of a kind of rich ethylene oxide cycle water full gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215182.XA CN103275037B (en) | 2013-05-31 | 2013-05-31 | The method of a kind of rich ethylene oxide cycle water full gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103275037A CN103275037A (en) | 2013-09-04 |
| CN103275037B true CN103275037B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310215182.XA Expired - Fee Related CN103275037B (en) | 2013-05-31 | 2013-05-31 | The method of a kind of rich ethylene oxide cycle water full gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103275037B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529667A (en) * | 1994-12-01 | 1996-06-25 | Hoechst Celanese Corporation | Process for recovering ethylene oxide |
| CN101260093A (en) * | 2008-03-21 | 2008-09-10 | 中国石油集团工程设计有限责任公司东北分公司 | Modified epoxy ethane washing technique for epoxy ethane/ethylene glycol producing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3418338A (en) * | 1966-02-28 | 1968-12-24 | Halcon International Inc | Water extractive distillation of an ethylene oxide stream containing formaldehyde |
| FR2833951A1 (en) * | 2001-12-21 | 2003-06-27 | Bp Chemicals Snc | Removal of water and aldehyde impurities from a mixture of ethylene oxide and water comprises two-stage distillation |
-
2013
- 2013-05-31 CN CN201310215182.XA patent/CN103275037B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5529667A (en) * | 1994-12-01 | 1996-06-25 | Hoechst Celanese Corporation | Process for recovering ethylene oxide |
| CN101260093A (en) * | 2008-03-21 | 2008-09-10 | 中国石油集团工程设计有限责任公司东北分公司 | Modified epoxy ethane washing technique for epoxy ethane/ethylene glycol producing device |
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|---|---|
| CN103275037A (en) | 2013-09-04 |
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Effective date of registration: 20151012 Address after: The sea level on the west side of Zhapu Development Zone in Jiaxing City, Zhejiang province 314201 Patentee after: SANJIANG CHEMICAL Co.,Ltd. Address before: The sea level on the west side of Zhapu Development Zone in Jiaxing City, Zhejiang province 314201 Patentee before: JIAXING YONGMING PETROCHEMICAL Co.,Ltd. |
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Effective date of registration: 20160427 Address after: 314201 Zhejiang, Jiaxing, Pinghu, Jiaxing port, west side of Ping Hai Road Patentee after: SANJIANG LETIAN CHEMICAL Co.,Ltd. Address before: The sea level on the west side of Zhapu Development Zone in Jiaxing City, Zhejiang province 314201 Patentee before: SANJIANG CHEMICAL Co.,Ltd. |
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Granted publication date: 20150819 |