CN213221000U - Device for improving rectification efficiency of propylene carbonate - Google Patents
Device for improving rectification efficiency of propylene carbonate Download PDFInfo
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- CN213221000U CN213221000U CN202021149094.6U CN202021149094U CN213221000U CN 213221000 U CN213221000 U CN 213221000U CN 202021149094 U CN202021149094 U CN 202021149094U CN 213221000 U CN213221000 U CN 213221000U
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Abstract
The utility model relates to an improve device of propylene carbonate rectification efficiency. The technical scheme is as follows: a feed inlet of the rectifying tower is connected with the primary tank through a pipeline, a discharge outlet at the top of the rectifying tower is connected with a first cache tank through a pipeline and a condenser, a vacuum pump is arranged on the upper side of the first cache tank, a top extraction pump is connected with a discharge outlet at the lower end of the first cache tank through one pipeline, and the other pipeline is connected to the upper side of the rectifying tower; the middle side of the rectifying tower is connected with a first product tank and a second product tank through pipelines; the upper part of the rectifying tower is provided with a temperature detector, and the bottom of the rectifying tower is provided with a heater. The beneficial effects are that: heating the tower kettle by controlling, steaming out light components from the top of the tower, extracting propylene carbonate from a lateral line, and sending the propylene carbonate to a finished product tank according to the product content of an intermediate tank; products which do not reach the standard can be returned to the tower again for rectification again; the utility model discloses can improve propylene carbonate rectification efficiency effectively, obtain the propylene carbonate more than 99.9% of content, improve the product benefit.
Description
Technical Field
The utility model relates to a rectification and purification device of propylene carbonate, in particular to a device for improving the rectification efficiency of propylene carbonate.
Background
The propylene carbonate is mainly used as a main raw material for synthesizing the dimethyl carbonate, and can also be used for removing carbon dioxide and hydrogen sulfide in gas and petroleum cracking gas; the propylene carbonate is mainly synthesized by methods such as an ester exchange method, a phosgene method, a chloropropanol method, a urea alcoholysis method, a carbon dioxide and 1, 2-propylene glycol synthesis method, a carbon dioxide and epoxypropane synthesis method and the like, wherein the carbon dioxide and epoxypropane synthesis method is a main method for industrially preparing the propylene carbonate; the boiling point of the propylene carbonate is high, and the atmospheric distillation wastes energy and is easy to cause high-temperature decomposition of materials, thereby affecting the rectification yield of the propylene carbonate and even making the rectification impossible.
Disclosure of Invention
The utility model aims at providing a device for improving the rectification efficiency of propylene carbonate aiming at the defects in the prior art, which obtains the product propylene carbonate by measuring the temperature value at the top of the tower of a purification rectification tower, sampling analysis and segmentation extraction.
The utility model provides an improve propylene carbonate rectification efficiency's device, its technical scheme is: the device comprises a rectifying tower (1), a condenser (2), a first cache tank (3), a vacuum pump (4), a top extraction pump (5), a first product tank (6), a second product tank (7), a lateral line external extraction pump (8), a primary tank (9) and a temperature detector (10), wherein a feed inlet of the rectifying tower (1) is connected with the primary tank (9) through a pipeline, a top discharge port of the rectifying tower (1) is connected to the first cache tank (3) through a pipeline and the condenser (2), the vacuum pump (4) is arranged on the upper side of the first cache tank (3), the top extraction pump (5) is connected to a lower end discharge port of the first cache tank (3) through one pipeline, and the other pipeline is connected to the upper side of the rectifying tower (1); the middle side of the rectifying tower (1) is connected with a first product tank (6) and a second product tank (7) through pipelines; the upper part of the rectifying tower (1) is provided with a temperature detector (10), and the bottom of the rectifying tower is provided with a heater (11).
Preferably, the first buffer tank (3) is connected to the second buffer tank (12) through a top mining pump (5).
Preferably, a discharge hole at the bottom of the second buffer tank (12) is connected with the rectifying tower (1) through a pipeline, and products which do not reach the standard can return to the rectifying tower again for re-rectification; the other discharge port of the second buffer tank (12) is connected to a finished product tank.
Preferably, the middle side of the rectifying tower (1) is connected with the first product tank (6) and the second product tank (7) through a middle-sampling product flow meter (13).
Preferably, the flow meter (13) for the middle-mining products comprises a flange (13.1), a flow pipe (13.2), a liquid inlet pipe (13.3), a liquid outlet pipe (13.4) and a display instrument (13.5), wherein the flanges (13.1) are respectively arranged at two ends of the flow pipe (13.2), and the middle part of the flow pipe is connected with the display instrument (13.5) through the liquid inlet pipe (13.3) and the liquid outlet pipe (13.4).
Preferably, the flow tube (13.2), the liquid inlet tube (13.3) and the liquid outlet tube (13.4) are hollow heat insulation tubes, respectively.
Preferably, one side of the display instrument (13.5) is provided with a high-temperature resistant fixing ring (13.6).
The utility model has the advantages that: the utility model feeds materials from the lower part of the rectifying tower, discharges materials from the top, and vacuumizes the rectifying tower from a top-collecting intermediate tank; the top is provided with a temperature detector, the tower kettle is controlled to be heated, light components are evaporated from the tower top, propylene carbonate is extracted from a lateral line, and the light components are sent to a finished product tank according to the product content in the intermediate tank; products which do not reach the standard can be returned to the tower again for rectification again; the utility model discloses can improve propylene carbonate rectification efficiency effectively, obtain the propylene carbonate more than 99.9% of content, improve the product benefit.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of a flow meter for a medium production process;
FIG. 3 is a schematic front view of a mid-production flow meter;
in the upper diagram: the system comprises a rectifying tower 1, a condenser 2, a first cache tank 3, a vacuum pump 4, a top extraction pump 5, a first product tank 6, a second product tank 7, a lateral line external extraction pump 8, a primary tank 9, a temperature detector 10, a heater 11, a second cache tank 12 and a middle extraction product flowmeter 13;
the device comprises a flange 13.1, a flow tube 13.2, a liquid inlet tube 13.3, a liquid outlet tube 13.4, a display instrument 13.5 and a high-temperature resistant fixing ring 13.6.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The first buffer tank 3 is connected to the second buffer tank 12 through the top extraction pump 5, a discharge hole at the bottom of the second buffer tank 12 is connected to the rectifying tower 1 through a pipeline, and products which do not reach the standard can return to the rectifying tower again for rectification; the other discharge port of the second buffer tank 12 is connected to the finished product tank.
Further, the middle side of the rectifying column 1 is connected to the first product tank 6 and the second product tank 7 through a middle recovery product flow meter 13.
Referring to the attached drawings 2 and 3, the utility model provides a well production flowmeter 13 includes flange 13.1, flow tube 13.2, feed liquor pipe 13.3, drain pipe 13.4, display 13.5, flow tube 13.2's both ends are equipped with flange 13.1 easy to assemble respectively, and the middle part is passed through feed liquor pipe 13.3 and drain pipe 13.4 and is connected display 13.5.
Wherein, above-mentioned flow tube 13.2, feed liquor pipe 13.3 and drain pipe 13.4 adopt the hollow heat insulating tube respectively, reduce the influence of high temperature to operating personnel or environment, and one side of above-mentioned display instrument 13.5 is equipped with high temperature resistant solid fixed ring 13.6 for make things convenient for operating means.
The utility model discloses during the use:
stably conveying the crude oil from the primary tank 9 to a tower kettle of the rectifying tower 1 through a pipeline, vacuumizing the rectifying tower 1 after the crude oil is fully filled, opening the rectifying tower to heat, refluxing for 30 minutes, removing light at the tower top, extracting the crude oil to a buffer tank 3, and stopping extracting when the temperature of the tower top reaches 99.8 ℃; starting side draw in the tower, wherein the reflux ratio is 5: 1, respectively extracting to a first product tank 6 and a second product tank 7; and if the liquid level of the tower kettle is lower than 200mm, operating again according to the steps.
The utility model feeds materials from the lower part of the rectifying tower, discharges materials from the top, and vacuumizes the rectifying tower from a top-collecting intermediate tank; the top is provided with a temperature detector, the tower kettle is controlled to be heated, light components are evaporated from the tower top, propylene carbonate is extracted from a lateral line, and the light components are sent to a finished product tank according to the product content in the intermediate tank; products which do not reach the standard can be returned to the tower again for rectification again; the utility model discloses can improve propylene carbonate rectification efficiency effectively, obtain the propylene carbonate more than 99.9% of content, improve the product benefit.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (7)
1. The utility model provides an improve device of propylene carbonate rectification efficiency which characterized by: the device comprises a rectifying tower (1), a condenser (2), a first cache tank (3), a vacuum pump (4), a top extraction pump (5), a first product tank (6), a second product tank (7), a lateral line external extraction pump (8), a primary tank (9) and a temperature detector (10), wherein a feed inlet of the rectifying tower (1) is connected with the primary tank (9) through a pipeline, a top discharge port of the rectifying tower (1) is connected to the first cache tank (3) through a pipeline and the condenser (2), the vacuum pump (4) is arranged on the upper side of the first cache tank (3), the top extraction pump (5) is connected to a lower end discharge port of the first cache tank (3) through one pipeline, and the other pipeline is connected to the upper side of the rectifying tower (1); the middle side of the rectifying tower (1) is connected with a first product tank (6) and a second product tank (7) through pipelines; the upper part of the rectifying tower (1) is provided with a temperature detector (10), and the bottom of the rectifying tower is provided with a heater (11).
2. The device for improving the rectification efficiency of the propylene carbonate according to claim 1, which is characterized in that: the first buffer tank (3) is connected to the second buffer tank (12) through a top mining pump (5).
3. The device for improving the rectification efficiency of propylene carbonate according to claim 2, which is characterized in that: a discharge hole at the bottom of the second cache tank (12) is connected with the rectifying tower (1) through a pipeline, and products which do not reach the standard can return to the rectifying tower again for rectification; the other discharge port of the second buffer tank (12) is connected to a finished product tank.
4. The device for improving the rectification efficiency of the propylene carbonate according to claim 1, which is characterized in that: the middle side of the rectifying tower (1) is connected with a first product tank (6) and a second product tank (7) through a middle-extraction product flowmeter (13).
5. The device for improving the rectification efficiency of the propylene carbonate according to claim 4, which is characterized in that: the medium-extraction product flowmeter (13) comprises flanges (13.1), a flow tube (13.2), a liquid inlet tube (13.3), a liquid outlet tube (13.4) and a display instrument (13.5), wherein the flanges (13.1) are respectively arranged at two ends of the flow tube (13.2), and the middle part of the flow tube is connected with the display instrument (13.5) through the liquid inlet tube (13.3) and the liquid outlet tube (13.4).
6. The device for improving the rectification efficiency of the propylene carbonate according to claim 5, which is characterized in that: the flow tube (13.2), the liquid inlet tube (13.3) and the liquid outlet tube (13.4) are respectively hollow heat insulation tubes.
7. The device for improving the rectification efficiency of the propylene carbonate according to claim 5, which is characterized in that: and a high-temperature-resistant fixing ring (13.6) is arranged on one side of the display instrument (13.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149094.6U CN213221000U (en) | 2020-06-19 | 2020-06-19 | Device for improving rectification efficiency of propylene carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021149094.6U CN213221000U (en) | 2020-06-19 | 2020-06-19 | Device for improving rectification efficiency of propylene carbonate |
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| Publication Number | Publication Date |
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| CN213221000U true CN213221000U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021149094.6U Active CN213221000U (en) | 2020-06-19 | 2020-06-19 | Device for improving rectification efficiency of propylene carbonate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521783A (en) * | 2021-06-07 | 2021-10-22 | 山东利兴化工有限公司 | Continuous rectification device for producing electronic grade propylene carbonate |
-
2020
- 2020-06-19 CN CN202021149094.6U patent/CN213221000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521783A (en) * | 2021-06-07 | 2021-10-22 | 山东利兴化工有限公司 | Continuous rectification device for producing electronic grade propylene carbonate |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Yushen Inventor after: Yang Guohui Inventor after: Qiu Guangyu Inventor before: Wang Yushen Inventor before: Yang Guohui Inventor before: Qiu Guangyu |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 198 Tongxing Road, Kenli District, Dongying City, Shandong Province Patentee after: Shenghua New Material Group Co.,Ltd. Address before: No. 198, Tongxing Road, Kenli District, Dongying City, Shandong Province 257000 Patentee before: SHANDONG SHIDA SHENGHUA CHEMICAL GROUP Co.,Ltd. |