CN203874485U - Novel ethylene glycol aftertreatment equipment - Google Patents
Novel ethylene glycol aftertreatment equipment Download PDFInfo
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- CN203874485U CN203874485U CN201420290068.3U CN201420290068U CN203874485U CN 203874485 U CN203874485 U CN 203874485U CN 201420290068 U CN201420290068 U CN 201420290068U CN 203874485 U CN203874485 U CN 203874485U
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- ethylene glycol
- condensate
- lime set
- glycol
- reboiler
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses novel ethylene glycol aftertreatment equipment, which belongs to the technical field of chemical production equipment. The novel ethylene glycol aftertreatment equipment comprises an ethylene glycol evaporation tower, a gas stripping refining tower reboiler, a condensate tank, a condensate pump and a cooler which are connected in sequence, wherein an ethylene glycol evaporation tower reboiler is arranged at the bottom of the ethylene glycol evaporation tower; a condensate inlet is formed in the condensate tank; a condensate branch tube is arranged on the condensate pump and is connected with the top of the ethylene glycol evaporation tower; a gas stripping liquid outlet and a gas stripping liquid inlet are respectively formed in the upper part and the lower part of the gas stripping refining tower reboiler. By adopting the equipment, water in ethylene glycol can be removed through the evaporation tower, steam is discharged from the top of the tower and is then subjected to heat exchange through the gas stripping refining tower reboiler, the steam is further fed into the condensate tank after being cooled, a part of the steam is cooled and discharged through the condensate pump, the other part of the steam is fed into the top of the ethylene glycol evaporation tower and is used as a reflux liquid, and moreover a condensate inlet for supplying condensate into the condensate tank is formed in the condensate tank, so that a certain liquid level is maintained, the condensate is prevented from being completely pumped, the structure is simple, secondary energy can be sufficiently circulated and utilized, and effects of energy conservation, consumption reduction and the like are achieved.
Description
Technical field
The utility model belongs to chemical production equipment technical field, is specifically related to a kind of novel ethylene glycol equipment for after-treatment of energy-conservation, environmental protection.
Background technology
Along with social industrial expansion, more fierceness of competition between enterprise, environmental protection more and more comes into one's own, and industry energy conservation reduces discharging extremely urgent.
Ethylene oxide device production technology adopts direct oxidation of ethylene to legal system to get oxirane, after the oxirane that reaction produces is absorbed in scrubbing tower, then through stripping, rectifying, refined raw output product of ethylene oxide.This device main product oxirane, but in washing, stripping and the distillation process of oxirane, have a small amount of oxirane and water reaction generating glycol, the too high absorption that can affect oxirane of glycol concentration, in order to maintain glycol concentration in water system in certain limit, need at the bottom of stripping/rectifying tower, continue to discharge one material, also have, for ensureing that product quality also needs one to continue discharge to reduce the accumulation of some heavy component impurity at the bottom of purification ethylene oxide tower tower, one is the aqueous solution that contains ethylene glycol for these two strands of materials, another strand is the oxirane that contains some heavy constituent impurity, in order to reclaim the ethylene glycol in discharges material, to after these two bursts of mixing of materials, react through ethylene glycol reactor again, whole oxirane and excessive water reaction generating glycol in ethylene glycol reactor, this product obtains byproduct through separation and purification again: the ethylene glycol of technical grade and many ethylene glycol, Glycol Evaporator tower top material is as stripping/rectifying column reboiler thermal source, lime set is discharged through subcooler after entering lime set tank.Because Glycol Evaporator tower reactor temperature is up to 165 DEG C, thus inevitably have part ethylene glycol along with steam out, this has just caused discharge COD up to 1500ppm, seriously exceedes arm's length standard.
Utility model content
For the above-mentioned problems in the prior art, the novel ethylene glycol equipment for after-treatment that the purpose of this utility model is to provide a kind of energy-saving consumption-reducing, makes full use of secondary energy sources, recycles.
The novel ethylene glycol equipment for after-treatment of described one, comprise the Glycol Evaporator connecting successively, air lift treating column reboiler, lime set tank, lime set pump and cooler, described Glycol Evaporator bottom arranges Glycol Evaporator reboiler, on Glycol Evaporator reboiler, bottom arranges respectively high steam entrance and the outlet of high pressure lime set, it is characterized in that, on described lime set tank, lime set import is set, on described lime set pump, lime set arm is set, be connected with Glycol Evaporator top by lime set arm, on described air lift treating column reboiler, bottom arranges respectively air lift liquid and exports gentle extract import.
The novel ethylene glycol equipment for after-treatment of described one, it is characterized in that, on described cooler, cooling water inlet, coolant outlet and discharge outlet are set, cooling water enters cooler from cooling water inlet, carry out heat exchange to the water in cooler, flow out from coolant outlet, cooled water is discharged from discharge outlet again.
The novel ethylene glycol equipment for after-treatment of above-mentioned one, comprise the Glycol Evaporator, air lift treating column reboiler, lime set tank, lime set pump and the cooler that connect successively, Glycol Evaporator bottom arranges Glycol Evaporator reboiler, Glycol Evaporator reboiler upper and lower part arranges respectively high steam entrance and the outlet of high pressure lime set, lime set import is set on lime set tank, lime set arm is set on lime set pump, be connected with Glycol Evaporator top by lime set arm, air lift treating column reboiler upper and lower part arranges respectively air lift liquid and exports gentle extract import.The utility model is by adopting above-mentioned technology, remove the water in ethylene glycol by evaporating column, water vapour from tower top out, process air lift treating column reboiler is to the heat supply of air lift treating column, after cooling, enter lime set tank, discharged through cooling by a lime set pump part, another part enters Glycol Evaporator top as phegma, by cooling the ethylene glycol vapor portion of the tower top Glycol Evaporator bottom of getting back to, the utility model arranges lime set import on lime set tank in addition, be used for to supplementing lime set in lime set tank, make it keep certain liquid level, prevent from finding time, it is simple in structure, fully secondary energy sources are recycled, there is energy-saving consumption-reducing texts.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
In figure: 1-high steam entrance, the outlet of 2-high pressure lime set, 3-Glycol Evaporator reboiler, 4-Glycol Evaporator, the outlet of 5-air lift liquid, the import of 6-air lift liquid, 7-air lift treating column reboiler, 8-lime set tank, the import of 9-lime set, 10-lime set pump, 11-cooler, 12-coolant outlet, 13-cooling water inlet, 14-discharge outlet.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model will be further described:
As shown in the figure, a kind of novel ethylene glycol equipment for after-treatment, for removing the moisture content of ethylene glycol, improve the purity of ethylene glycol, it comprises Glycol Evaporator 4, Glycol Evaporator 4 bottoms arrange the Glycol Evaporator reboiler 3 being connected with its circulation, on Glycol Evaporator reboiler 3, bottom arranges respectively high steam entrance 1 and high pressure lime set outlet 2, high steam enters from high steam entrance 1, ethylene glycol mixture is carried out to heat exchange, after self greenhouse cooling, become high pressure lime set, flow out from high pressure lime set outlet 2, ethylene glycol mixture after heating evaporates in Glycol Evaporator 4, obtain water vapour and a small amount of ethylene glycol steam, water vapour from tower top out, enter air lift treating column reboiler 7, simultaneously, cold air extract enters air lift treating column reboiler 7 from air lift liquid import 6, after water vapour heat exchange, from air lift liquid outlet 5, flow out, here take full advantage of the heat of water vapour, water after cooling becomes lime set and enters lime set tank 8, enter cooler 11 through lime set pump 10 parts again, cooling water enters cooler 11 from cooling water inlet 13, carry out heat exchange to the lime set of 11 li, cooler, flow out from coolant outlet 12 again, cooled lime set is discharged from discharge outlet 14, another part lime set enters Glycol Evaporator 4 tops by lime set arm, as phegma, in the interior backflow of Glycol Evaporator 4, after cooling a small amount of ethylene glycol steam, entering Glycol Evaporator 4 bottoms mixes with other ethylene glycol, thereby reach the water in separating ethylene glycol, the object that ethylene glycol is purified.
The utility model takes full advantage of the heat of Glycol Evaporator 4 water vapour out, as the thermal source of air lift treating column, in addition, water vapour lime set part is returned in Glycol Evaporator 4 as phegma, ethylene glycol steam is cooled down, not only improved the purity of ethylene glycol, and be all that secondary exhaust gas improves, save energy consumption, improved economic benefit.
Claims (2)
1. a novel ethylene glycol equipment for after-treatment, comprise the Glycol Evaporator (4) connecting successively, air lift treating column reboiler (7), lime set tank (8), lime set pump (10) and cooler (11), described Glycol Evaporator (4) bottom arranges Glycol Evaporator reboiler (3), on Glycol Evaporator reboiler (3), bottom arranges respectively high steam entrance (1) and high pressure lime set outlet (2), it is characterized in that, on described lime set tank (8), lime set import (9) is set, on described lime set pump (10), lime set arm is set, be connected with Glycol Evaporator (4) top by lime set arm, on described air lift treating column reboiler (7), bottom arranges respectively air lift liquid outlet (5) gentle extract imports (6).
2. the novel ethylene glycol equipment for after-treatment of one according to claim 1, it is characterized in that, on described cooler (11), cooling water inlet (13), coolant outlet (12) and discharge outlet (14) are set, from cooling water inlet, (13) enter cooler (11) to cooling water, carry out heat exchange to the inner water of cooler (11), flow out from coolant outlet (12), cooled water is discharged from discharge outlet (14) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290068.3U CN203874485U (en) | 2014-06-03 | 2014-06-03 | Novel ethylene glycol aftertreatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290068.3U CN203874485U (en) | 2014-06-03 | 2014-06-03 | Novel ethylene glycol aftertreatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203874485U true CN203874485U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290068.3U Active CN203874485U (en) | 2014-06-03 | 2014-06-03 | Novel ethylene glycol aftertreatment equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN203874485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938147A (en) * | 2017-04-06 | 2017-07-11 | 胡玉娴 | Drying tower heater |
-
2014
- 2014-06-03 CN CN201420290068.3U patent/CN203874485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938147A (en) * | 2017-04-06 | 2017-07-11 | 胡玉娴 | Drying tower heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SANJIANG CHEMICAL CO., LTD. Free format text: FORMER OWNER: JIAXING YONGMING PETROCHEMICAL CO., LTD. Effective date: 20141125 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141125 Address after: 314201, Zhejiang, Jiaxing, Jiaxing port, west side of Ping Hai Road Patentee after: Sanjiang Chemical Co., Ltd. Address before: 314201, Zhejiang, Jiaxing, Jiaxing port, west side of Ping Hai Road Patentee before: Jiaxing Yongming Petrochemical Co., Ltd. |