CN214105866U - Fractionating device for producing normal hexane and isohexane - Google Patents
Fractionating device for producing normal hexane and isohexane Download PDFInfo
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- CN214105866U CN214105866U CN202022461325.3U CN202022461325U CN214105866U CN 214105866 U CN214105866 U CN 214105866U CN 202022461325 U CN202022461325 U CN 202022461325U CN 214105866 U CN214105866 U CN 214105866U
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Abstract
The utility model provides a fractional distillation apparatus of production n-hexane, isohexane which characterized in that: the device comprises a light component removing tower and a normal hexane removing tower; the feed inlet of the light component removal tower is connected with the oil outlet of the oil outlet pipeline, the top of the light component removal tower is connected with a petroleum ether I outlet device through a pipeline, a side line extraction outlet of the light component removal tower is connected with the feed inlet of the n-hexane removal tower, and a bottom oil outlet of the light component removal tower is connected with a petroleum ether III outlet device through a pipeline; the top of the normal hexane removal tower is connected with an isohexane outlet device pipeline, and the bottom of the normal hexane removal tower is connected with a normal hexane outlet device pipeline; the light component removing tower is a clapboard tower, and the normal hexane removing tower is a plate tower. Has the advantages of simple use by introducing the clapboard tower and replacing two towers with one tower.
Description
Technical Field
The utility model belongs to the technical field of petrochemical, specificly relate to a fractionating device of production n-hexane, isohexane.
Background
In recent years, with the increasing pressure of resource shortage, environmental protection and carbon emission reduction, reducing energy consumption and carbon emission by using an advanced process enhancement technology has become an industrial research hotspot. In foreign countries, the technology of the clapboard tower is mainly applied to the field of olefin production, and the research on the field is later in China, so that the technology is just started in recent years and has little application in industry.
N-hexane is one of the most industrially used hydrocarbon solvents, and is the most representative nonpolar solvent. N-hexane is used as an important chemical raw material and a solvent, has been widely used in the industries of medicine, chemical industry, high molecular materials, rubber industry, food analysis and the like, and can be used as a diluent of essential oil, a coolant in caprolactam production, a vegetable oil extracting agent in food production and the like. Isohexane has low boiling point, easy removal, good safety and low energy cost, has very wide prospect in the fields of aerosol product production and precise instruments, and the preparation technology of isohexane has become the focus of attention of researchers.
In industrial production, the production of normal hexane and isohexane usually requires pretreatment of production raw materials, and then a series of technological processes such as double-tower continuous rectification are carried out to finally obtain qualified hexane oil products. With the increasingly strict requirements on the deterioration and environmental protection of crude oil, the utilization of high-tech means to improve the production efficiency, save energy and reduce emission, and the production of high-quality products becomes the main direction of research at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a through introducing the baffle tower, a tower replaces two towers, the fractionating device of fractionation equipment production normal hexane, isohexane simple to use.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: a fractionating device for producing normal hexane and isohexane comprises a light component removal tower and a normal hexane removal tower;
the feed inlet of the light component removal tower is connected with the oil outlet of the oil outlet pipeline, the top of the light component removal tower is connected with a petroleum ether I outlet device through a pipeline, a side line extraction outlet of the light component removal tower is connected with the feed inlet of the n-hexane removal tower, and a bottom oil outlet of the light component removal tower is connected with a petroleum ether III outlet device through a pipeline; the top of the normal hexane removal tower is connected with an isohexane outlet device pipeline, and the bottom of the normal hexane removal tower is connected with a normal hexane outlet device pipeline; the light component removing tower is a clapboard tower, and the normal hexane removing tower is a plate tower.
Preferably, the tower top of taking off light component tower, taking off the n-hexane tower all connects cooler and reflux tank respectively through the pipeline, the cooler passes through the pipeline and links to each other with the reflux tank, the reflux tank passes through the pipeline and links to each other with the backwash pump, two pipelines of backwash pump exit linkage: one pipeline is connected with the tower top return line, and the other pipeline is connected with the product outlet device through a pipeline.
Preferably, a vertical clapboard is arranged in the light component removal tower to form a clapboard tower, the vertical clapboard divides the dehydrogenation component removal tower into an auxiliary tower area and a main tower area, and a lateral line of the auxiliary tower area is extracted and connected with the main tower area.
Preferably, the fractionating system consists of a light component removal tower and an n-hexane removal tower, wherein the light component removal tower is a clapboard tower, the n-hexane removal tower is a plate tower, and the plate tower adopts a composite hole micro valve high-efficiency tower plate.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
the utility model provides a fractionation device of production n-hexane, isohexane, introduces the baffle tower at the fractionation system, and the baffle tower can carry out internal energy integration with the multicolumn system, and the function of two towers is realized to single tower, improves thermodynamic efficiency, has reduced the required energy consumption of process. By adopting the partition plate tower technology, one rectifying tower and accessory equipment are saved, and the equipment investment and the occupied area are reduced. The fractionating system has simple equipment, high separation precision, high thermodynamic efficiency and low energy consumption.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-light component removal tower, 2-n-hexane removal tower, 3-light component removal tower auxiliary tower reflux pump, 4-n-hexane tower feeding pump, 5-petroleum ether I outlet device pipeline, 6-petroleum ether III outlet device pipeline, 7-isohexane outlet device pipeline, 8-n-hexane outlet device pipeline, 9-cooler, 10-reflux tank and 11-reflux pump.
Detailed Description
The present application will be described in further detail below with reference to the following detailed description and the accompanying drawings, but the present application is not limited to the following examples.
The utility model provides a I play device pipeline of petroleum ether, III play device pipeline of petroleum ether, isohexane play device pipeline, and the ejection of compact in the pipeline that n-hexane goes out the device pipeline is petroleum ether I, petroleum ether III, isohexane and n-hexane in proper order.
As shown in the attached figure 1, the fractionating device for producing normal hexane and isohexane comprises a light component removal tower 1, a normal hexane removal tower 2;
the feed inlet of the light component removal tower 1 is connected with the oil outlet of the oil outlet pipeline, the top of the light component removal tower 1 is connected with a petroleum ether I outlet device pipeline 5, the side line extraction outlet of the light component removal tower 1 is connected with the feed inlet of the n-hexane removal tower 2, and the bottom oil outlet of the light component removal tower 1 is connected with a petroleum ether III outlet device pipeline 6; the top of the normal hexane removal tower 2 is connected with an isohexane outlet device pipeline 7, and the bottom of the normal hexane removal tower 2 is connected with a normal hexane outlet device pipeline 8; the light component removing tower is a clapboard tower, and the normal hexane removing tower is a plate tower.
As shown in the attached drawing 1, the top of the light component removing tower 1 and the n-hexane removing tower 2 are respectively connected with a cooler 9 and a reflux tank 10 through pipelines, the cooler 9 is connected with the reflux tank 10 through a pipeline, the reflux tank 10 is connected with a reflux pump 11 through a pipeline, and an outlet of the reflux pump 11 is connected with two pipelines: one pipeline is connected with the tower top return line, and the other pipeline is connected with the product outlet device through a pipeline.
The light component removal tower is internally provided with a vertical clapboard to form a clapboard tower, the vertical clapboard divides the dehydrogenation component removal tower into an auxiliary tower area and a main tower area, and a lateral line of the auxiliary tower area is extracted and connected with the main tower area; the arrangement can ensure that the materials are circularly treated in the light component removal tower for many times.
The fractionating system comprises lightness-removing component tower, takes off the n-hexane tower, and its lightness-removing component tower is the baffle tower, takes off the n-hexane tower and is the plate tower, and the plate tower adopts the high-efficient column plate of compound hole microvalve.
The method comprises the steps that low fraction oil obtained by pretreating raw material crude hexane enters a fractionation system, the fractionation system comprises a light fraction removal tower 1 and a normal hexane removal tower 2, the low fraction oil firstly enters the light fraction removal tower 1 for fractionation, gas-phase components at the top of the tower are cooled by a cooler 9 (which can be composed of a water cooler and an air cooler and is collectively called as a cooler), one part of the gas-phase components are used as tower top reflux, one part of the gas-phase components are used as a product discharge device of petroleum ether I, a side line suction outlet is connected with a feed inlet of the normal hexane removal tower through a feed pump 4 of the normal hexane removal tower 2, and a tower bottom oil outlet of the light fraction removal tower 1 is connected with a petroleum ether III discharge device pipeline 6; cooling the gas-phase components at the top of the normal hexane removal tower 2 by a cooler (a water cooler and an air cooler), taking a part of the gas-phase components as top reflux, taking a part of the gas-phase components as an isohexane outlet device, and taking bottom oil as a normal hexane outlet device; in addition, the light component removing tower 1 is a clapboard tower which is formed by arranging a vertical clapboard in a tower body, the vertical clapboard divides the inner structure of the tower into an auxiliary tower area and a main tower area, wherein the auxiliary tower area is provided with a lateral line, and a pumping outlet of the lateral line is connected with a reflux pipeline of the main tower area through a reflux pump 3 which is connected with the auxiliary tower area of the light component removing tower 1, so that the repeated separation treatment of materials is realized, and the yield and the product purity are improved.
Claims (3)
1. The utility model provides a fractional distillation apparatus of production n-hexane, isohexane which characterized in that: the device comprises a light component removing tower and a normal hexane removing tower;
the feed inlet of the light component removal tower is connected with the oil outlet of the oil outlet pipeline, the top of the light component removal tower is connected with a petroleum ether I outlet device through a pipeline, a side line extraction outlet of the light component removal tower is connected with the feed inlet of the n-hexane removal tower, and a bottom oil outlet of the light component removal tower is connected with a petroleum ether III outlet device through a pipeline; the top of the normal hexane removal tower is connected with an isohexane outlet device pipeline, and the bottom of the normal hexane removal tower is connected with a normal hexane outlet device pipeline; the light component removing tower is a clapboard tower, and the normal hexane removing tower is a plate tower.
2. The fractionation apparatus for producing n-hexane and isohexane according to claim 1, wherein: the light component removal tower is internally provided with a vertical clapboard to form a clapboard tower, the vertical clapboard divides the light component removal tower into an auxiliary tower area and a main tower area, and the side line of the auxiliary tower area is extracted and connected with the main tower area.
3. The fractionation apparatus for producing n-hexane and isohexane according to claim 1, wherein: the light component removing tower and the n-hexane removing tower comprise a component distillation system, wherein the light component removing tower is a clapboard tower, the n-hexane removing tower is a plate tower, and the plate tower adopts a composite hole micro valve high-efficiency tower plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022461325.3U CN214105866U (en) | 2020-10-29 | 2020-10-29 | Fractionating device for producing normal hexane and isohexane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022461325.3U CN214105866U (en) | 2020-10-29 | 2020-10-29 | Fractionating device for producing normal hexane and isohexane |
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| Publication Number | Publication Date |
|---|---|
| CN214105866U true CN214105866U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022461325.3U Active CN214105866U (en) | 2020-10-29 | 2020-10-29 | Fractionating device for producing normal hexane and isohexane |
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| Country | Link |
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| CN (1) | CN214105866U (en) |
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