CN201949672U - Cooling device of xylene distillation tower - Google Patents
Cooling device of xylene distillation tower Download PDFInfo
- Publication number
- CN201949672U CN201949672U CN 201020659224 CN201020659224U CN201949672U CN 201949672 U CN201949672 U CN 201949672U CN 201020659224 CN201020659224 CN 201020659224 CN 201020659224 U CN201020659224 U CN 201020659224U CN 201949672 U CN201949672 U CN 201949672U
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- Prior art keywords
- condensation
- condenser
- distillation tower
- chilled brine
- cooling device
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Abstract
The utility model relates to a cooling device of a xylene distillation tower, which is a condenser arranged on the top of the distillation tower. The condenser adopts the two-level condensation, that is, the upper part of the condenser adopts the water condensation and the lower part adopts the freezing brine condensation. In the utility model, the two-level condensation is arranged, in which the water condensation on top is used for a primary cooling and the freezing brine on the bottom is used for a secondary condensation, thereby further decreasing the temperature of the refluxing liquid, enhancing the separation effect and improving the distillation yield of the xylene; and the double condensation further shortens the separation time and increases production efficiency.
Description
Technical field
The utility model relates to a kind of cooling device, is specifically related to a kind of cooling device that is used for the xylene distillation tower.
Background technology
In the technological process of preparation methyl carbamate, the quality of intermediate material xylene distillation operation has all played certain influence for the realization fully and the product yield of a whole set of technological process.Xylene distillation is a backflow production technology in adopting, need be in the condenser at rectifying column top in the rectifying refrigerated separation, generally only adopt chilled brine to carry out the cooling of rectifying tower top top.In the actual production, tend to because the cooling dynamics is not enough, it is unclear to cause component to be separated, and product content is low, and the production cycle is longer.
The utility model content
At above the deficiencies in the prior art, the utility model provides a kind of can improve the cooling dynamics, the cooling device of the xylene distillation tower that the rectifying product content is high.
The utility model is achieved through the following technical solutions:
A kind of cooling device of xylene distillation tower, for being arranged at the condenser at rectifying column top, described condenser adopts condensed in two stages, and promptly water condensation is adopted on the top of condenser, and the chilled brine condensation is adopted in the bottom.
Described condenser upper water condensation portion is provided with cooling water inlet and outlet, and the vertical height of described cooling water inlet is lower than the vertical height of coolant outlet.
Described condenser chilled brine condensation portion is provided with chilled brine import and outlet, and the vertical height of described chilled brine import is lower than the vertical height of chilled brine outlet.
The beneficial effects of the utility model are: by the setting of condensed in two stages, utilize the water condensation on top to carry out once elementary cooling, the chilled brine by the bottom carries out time condensation again, with the temperature of further reduction phegma, the better effects if of make separating has improved the rectifying output of dimethylbenzene; Utilize dual condensation, shortened the time of separating further, improved production efficiency.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1 is rectifying column; 2 is condenser; 3 is cooling water inlet; 4 is coolant outlet; 5 is the chilled brine import; 6 are the chilled brine outlet.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
The utility model provides a kind of cooling device of xylene distillation tower, for being arranged at the condenser 2 at rectifying column 1 top, for separating dimethyl benzene better, the utility model has adopted condenser 2 condensed in two stages structures, promptly adopt water condensation on the top of condenser 2, the chilled brine condensation is adopted in the bottom.
Condenser 2 upper water condensation portion are provided with cooling water inlet 3 and outlet 4, and for reaching better condensation effect, the utility model also is arranged to the vertical height of cooling water inlet 3 be lower than the vertical height of coolant outlet 4.
Condenser 2 bottom chilled brine condensation portion also are provided with chilled brine import 5 and outlet 6, utilize above-mentioned identical principle, and the vertical height of the utility model chilled brine import 5 is set to be lower than the vertical height of chilled brine outlet 6.
During use, feed chilled brine and cooling water respectively to cooling water inlet 3 and chilled brine import 5, withdrawing fluid in the rectifying column 1 partly carries out once elementary cooling by the water condensation on condenser top successively, pass through the chilled brine part of bottom again, carry out the secondary heat exchange with chilled brine, further reduced the temperature of withdrawing fluid, the better effects if of make separating has improved the rectifying output of dimethylbenzene.Simultaneously, utilize dual condensation, shortened the time of separating further, improved production efficiency.
Claims (3)
1. the cooling device of an xylene distillation tower for being arranged at the condenser at rectifying column top, is characterized in that described condenser adopts condensed in two stages, and promptly water condensation is adopted on the top of condenser, and the chilled brine condensation is adopted in the bottom.
2. the cooling device of xylene distillation tower according to claim 1 is characterized in that described condenser upper water condensation portion is provided with cooling water inlet and outlet, and the vertical height of described cooling water inlet is lower than the vertical height of coolant outlet.
3. the cooling device of xylene distillation tower according to claim 1, it is characterized in that described condenser chilled brine condensation portion is provided with chilled brine import and outlet, the vertical height of described chilled brine import is lower than the vertical height of chilled brine outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020659224 CN201949672U (en) | 2010-12-14 | 2010-12-14 | Cooling device of xylene distillation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020659224 CN201949672U (en) | 2010-12-14 | 2010-12-14 | Cooling device of xylene distillation tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201949672U true CN201949672U (en) | 2011-08-31 |
Family
ID=44493801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020659224 Expired - Fee Related CN201949672U (en) | 2010-12-14 | 2010-12-14 | Cooling device of xylene distillation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201949672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362431A (en) * | 2016-11-15 | 2017-02-01 | 德艾柯工程技术（上海）有限公司 | Built-in condensing device of distillation tower |
-
2010
- 2010-12-14 CN CN 201020659224 patent/CN201949672U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106362431A (en) * | 2016-11-15 | 2017-02-01 | 德艾柯工程技术（上海）有限公司 | Built-in condensing device of distillation tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20151214 |
|
| EXPY | Termination of patent right or utility model |