CN210176758U - Isooctyl acrylate heavy component schizolysis system - Google Patents
Isooctyl acrylate heavy component schizolysis system Download PDFInfo
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- CN210176758U CN210176758U CN201920999253.2U CN201920999253U CN210176758U CN 210176758 U CN210176758 U CN 210176758U CN 201920999253 U CN201920999253 U CN 201920999253U CN 210176758 U CN210176758 U CN 210176758U
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- isooctyl acrylate
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Abstract
The utility model discloses an isooctyl acrylate heavy component cracking system, which mainly comprises a catalyst storage tank, an acrylic acid storage tank, a cracking kettle, a cracking condenser, a distillate storage tank and a rectifying device; the catalyst storage tank and the acrylic acid storage tank are respectively connected with the cracking kettle through metering pumps, an isooctyl acrylate heavy component feeding pipeline is arranged on the cracking kettle, a gas phase pipeline is further arranged on the cracking kettle, a cracking condenser is arranged on the gas phase pipeline, condensate of the cracking condenser enters the distillate storage tank, one outlet of the distillate storage tank is connected with a distillate output pipeline, the other outlet of the distillate storage tank is connected with the rectifying device, and a product outlet of the rectifying device is also connected with the distillate output pipeline. The utility model provides an isooctyl acrylate heavy ends schizolysis system has that the heavy ends schizolysis is efficient, isooctyl acrylate yield is high, the isooctyl acrylate quality advantage such as good that obtains.
Description
Technical Field
The utility model relates to an isooctyl acrylate heavy ends schizolysis system belongs to the chemical industry equipment field.
Background
In the production of acrylic esters, partial heavy component waste oil can be generated, and through development for many years, the existing treatment schemes for the acrylic esters heavy components in the industry are mainly two: 1) incineration disposal can cause serious waste of resources, and is rarely used at present; 2) the catalyst is used for carrying out high-temperature cracking on the heavy components, corresponding alcohol is generated after the high-temperature cracking, acrylic acid is added into a cracking kettle, and the esterification reaction is carried out on the acrylic acid and the alcohol generated by the cracking, so that the corresponding acrylic ester is obtained.
Such as: application number is 201721349669.7's utility model discloses a butyl acrylate heavy ends schizolysis system, catalyst preparation tank bottoms portion are connected to the schizolysis cauldron lower part through catalyst output pipeline, and the schizolysis cauldron top has the condenser through gaseous phase pipeline connection, and the condenser is connected and is distillated the material collecting vessel, and the material collecting vessel bottom that distills is equipped with and distills the material output pipeline, is connected with medium pressure steam pipe way on the schizolysis cauldron. The above treatment scheme is widely used at present, but because a lot of light component impurities are generated in the cracking process, the impurities can be mixed in the esterification product, and the quality of the esterification product is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heavy ends schizolysis is efficient, iso-octyl acrylate yield is high, the iso-octyl acrylate heavy ends schizolysis system of the iso-octyl acrylate of obtaining of high quality to prior art.
The utility model provides a technical scheme that technical problem adopted is: a heavy component cracking system for isooctyl acrylate mainly comprises a catalyst storage tank, an acrylic acid storage tank, a cracking kettle, a cracking condenser, a distillate storage tank and a rectifying device; the catalyst storage tank and the acrylic acid storage tank are respectively connected with the cracking kettle through metering pumps, an isooctyl acrylate heavy component feeding pipeline is arranged on the cracking kettle, a gas phase pipeline is further arranged on the cracking kettle, a cracking condenser is arranged on the gas phase pipeline, condensate of the cracking condenser enters the distillate storage tank, one outlet of the distillate storage tank is connected with a distillate output pipeline, the other outlet of the distillate storage tank is connected with the rectifying device, and a product outlet of the rectifying device is also connected with the distillate output pipeline.
Further, the rectifying device comprises a rectifying still, a rectifying condenser and a light component storage tank, wherein a feed inlet of the rectifying still is connected with the distillate storage tank, a light component outlet of the rectifying still is connected with the rectifying condenser, condensate of the rectifying condenser is connected with the light component storage tank, and a product outlet of the rectifying still is connected with the distillate output pipeline.
Furthermore, the distillate output pipelines comprise a first distillate output pipeline, a second distillate output pipeline and a distillate output main pipeline, wherein a first conveying pump is arranged on the first distillate output pipeline, and a second conveying pump is arranged on the second distillate output pipeline; the first distillate output pipeline is connected with the distillate storage tank, and the second distillate output pipeline is connected with the rectifying still; the first distillate output pipeline and the second distillate output pipeline are gathered to the distillate output main pipeline.
Further, the catalyst storage tank comprises a first catalyst storage tank and a second catalyst storage tank, the first catalyst storage tank is connected with the cracking kettle through a first metering pump, and the second catalyst storage tank is connected with the cracking kettle through a second metering pump.
Further, the cracking system also comprises a residue tank, and the residue tank is connected with the bottom of the cracking kettle.
Further, the acrylic acid storage tank is connected with the cracking kettle through a third metering pump.
The operation mode of the cracking system is as follows: feeding the isooctyl acrylate heavy component into a cracking kettle through an isooctyl acrylate heavy component feeding pipeline, feeding the metered first catalyst and the metered second catalyst into the cracking kettle through a first catalyst storage tank and a second catalyst storage tank respectively, and feeding the metered acrylic acid into the cracking kettle through an acrylic acid storage tank; heavy components in the cracking kettle are subjected to high-temperature cracking under the action of a catalyst, cracking products are isooctyl acrylate and isooctanol, and isooctanol produced by cracking and acrylic acid introduced into the cracking kettle react under the conditions of the catalyst and high temperature to generate isooctyl acrylate. Condensing the gas phase distillate in the cracking kettle in a cracking condenser through a gas phase pipeline, feeding the condensate into a distillate storage tank, and directly outputting the distillate in the distillate storage tank through a distillate output pipeline; the distillate in the distillate storage tank can also continuously enter a rectifying still for rectification to distill light components, the distilled gas-phase light components enter a rectifying condenser for condensation, and the condensate enters a light component storage tank, wherein the light components mainly comprise water, ether, aromatic hydrocarbons and the like; the substrate in the rectifying still is output through a distillate output pipeline. And discharging solid residues in the cracking kettle from the bottom and entering a residue tank.
The utility model has the advantages that: compared with the prior art, the cracking system provided by the utility model comprises the first catalyst storage tank and the second catalyst storage tank, which can provide more than one catalyst, so that the cracking reaction in the cracking kettle is more efficient and thorough; the cracking system is also provided with a rectifying device for rectifying the distillate in the cracking kettle to further remove light components, so that the obtained isooctyl acrylate has better quality and purity.
Drawings
Fig. 1 is the structure schematic diagram of the isooctyl acrylate heavy component cracking system provided by the utility model.
Wherein, a feeding pipeline of 1-isooctyl acrylate heavy component; 2-a pyrolysis condenser; 3-a rectifying still; 4-rectifying the condenser; 5-a light component storage tank; 6-a second distillate output line; 7-a second delivery pump; 8-distillate output main line; 9-distillate storage tank; 10-a first distillate output line; 11-a first delivery pump; 12-a cracking kettle; 13-residue tank; 14-a third metering pump; 15-acrylic acid storage tank; 16-a second metering pump; 17-a second catalyst reservoir; 18-a first metering pump; 19-first catalyst reservoir.
Detailed Description
The invention is further illustrated by the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Examples
As shown in the figure, the heavy component cracking system mainly comprises a catalyst storage tank, an acrylic acid storage tank 15, a cracking kettle 12, a cracking condenser 2, a distillate storage tank 9 and a rectifying device; the catalyst storage tank and the acrylic acid storage tank 15 are respectively connected with a cracking kettle 12 through metering pumps, an isooctyl acrylate heavy component feeding pipeline is arranged on the cracking kettle 12, a gas phase pipeline is further arranged on the cracking kettle 12, a cracking condenser 2 is arranged on the gas phase pipeline, condensate of the cracking condenser 2 enters a distillate storage tank 9, one outlet of the distillate storage tank 9 is connected with a first distillate output pipeline 10, a first conveying pump 11 is arranged on the first distillate output pipeline 10, the other outlet of the distillate storage tank 9 is connected with a rectifying device, the rectifying device comprises a rectifying kettle 3, a rectifying condenser 4 and a light component storage tank 5, a feeding port of the rectifying kettle 3 is connected with the distillate storage tank 9, a light component outlet of the rectifying kettle 3 is connected with the rectifying condenser 4, and condensate of the rectifying condenser 4 is connected with the light component storage tank 5, a product outlet of the rectifying still 3 is connected with a second distillate output pipeline 6, and the second distillate output pipeline 6 is provided with a second delivery pump 7; the first distillate outlet line 10 and the second distillate outlet line 6 merge into the distillate outlet main line 8.
The catalyst storage tanks comprise a first catalyst storage tank 19 and a second catalyst storage tank 17, wherein the first catalyst storage tank 19 is connected with the cracking kettle 12 through a first metering pump 18, and the second catalyst storage tank 17 is connected with the cracking kettle 12 through a second metering pump 16. The acrylic acid storage tank 15 is connected to the cleavage kettle 12 by a third metering pump 14. The cracking system also comprises a residue tank 13, and the residue tank 13 is connected with the bottom of the cracking kettle 12.
The operation mode of the cracking system is as follows: the method comprises the following steps that isooctyl acrylate heavy component enters a cracking kettle 12 through an isooctyl acrylate heavy component feeding pipeline 1, metered first catalyst and second catalyst enter the cracking kettle 12 through a first catalyst storage tank 19 and a second catalyst storage tank 17 respectively, and metered acrylic acid enters the cracking kettle 12 through an acrylic acid storage tank 15; heavy components in the cracking kettle 12 are subjected to high-temperature cracking under the action of a catalyst, cracking products are isooctyl acrylate and isooctanol, and isooctanol produced by cracking and acrylic acid introduced into the cracking kettle 12 react under the conditions of the catalyst and high temperature to generate isooctyl acrylate. The gas phase distillate in the cracking kettle 12 is condensed in the cracking condenser 2 through a gas phase pipeline, the condensate enters a distillate storage tank 9, and the distillate in the distillate storage tank 9 can be directly output through a distillate output pipeline; the distillate in the distillate storage tank 9 can also continuously enter the rectifying still 3 for rectification to distill light components, the distilled gas-phase light components enter the rectifying condenser 4 for condensation, and the condensate enters the light component storage tank 5, wherein the light components mainly comprise water, ether, aromatic hydrocarbons and the like; the substrate in the rectifying still 3 is output through a distillate output pipeline. The solid residue in the cracking kettle 12 is discharged from the bottom and enters a residue tank 13.
The cracking system provided by the embodiment comprises the first catalyst storage tank 19 and the second catalyst storage tank 17, so that more than one catalyst can be provided, and the cracking reaction in the cracking kettle 12 is more efficient and thorough; a rectifying device is also arranged in the cracking system, and the distillate in the cracking kettle 12 is rectified to further remove light components, so that the obtained isooctyl acrylate has better quality and purity.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (6)
1. The isooctyl acrylate heavy component cracking system is characterized in that: the heavy component cracking system mainly comprises a catalyst storage tank, an acrylic acid storage tank, a cracking kettle, a cracking condenser, a distillate storage tank and a rectifying device; the catalyst storage tank and the acrylic acid storage tank are respectively connected with the cracking kettle through metering pumps, an isooctyl acrylate heavy component feeding pipeline is arranged on the cracking kettle, a gas phase pipeline is further arranged on the cracking kettle, a cracking condenser is arranged on the gas phase pipeline, condensate of the cracking condenser enters the distillate storage tank, one outlet of the distillate storage tank is connected with a distillate output pipeline, the other outlet of the distillate storage tank is connected with the rectifying device, and a product outlet of the rectifying device is also connected with the distillate output pipeline.
2. The isooctyl acrylate heavy ends splitting system of claim 1, wherein: the rectifying device comprises a rectifying kettle, a rectifying condenser and a light component storage tank, wherein a feed inlet of the rectifying kettle is connected with the distillate storage tank, a light component outlet of the rectifying kettle is connected with the rectifying condenser, condensate of the rectifying condenser is connected with the light component storage tank, and a product outlet of the rectifying kettle is connected with a distillate output pipeline.
3. The isooctyl acrylate heavy ends splitting system of claim 2, wherein: the distillate output pipeline comprises a first distillate output pipeline, a second distillate output pipeline and a distillate output main pipeline, wherein a first conveying pump is arranged on the first distillate output pipeline, and a second conveying pump is arranged on the second distillate output pipeline; the first distillate output pipeline is connected with the distillate storage tank, and the second distillate output pipeline is connected with the rectifying still; the first distillate output pipeline and the second distillate output pipeline are gathered to the distillate output main pipeline.
4. The isooctyl acrylate heavy ends splitting system of claim 1 or 2, wherein: the catalyst storage tank comprises a first catalyst storage tank and a second catalyst storage tank, the first catalyst storage tank is connected with the cracking kettle through a first metering pump, and the second catalyst storage tank is connected with the cracking kettle through a second metering pump.
5. The isooctyl acrylate heavy ends splitting system of claim 1 or 2, wherein: the cracking system further comprises a residue tank, and the residue tank is connected with the bottom of the cracking kettle.
6. The isooctyl acrylate heavy ends splitting system of claim 1 or 2, wherein: and the acrylic acid storage tank is connected with the cracking kettle through a third metering pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920999253.2U CN210176758U (en) | 2019-06-30 | 2019-06-30 | Isooctyl acrylate heavy component schizolysis system |
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| CN201920999253.2U CN210176758U (en) | 2019-06-30 | 2019-06-30 | Isooctyl acrylate heavy component schizolysis system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807960A (en) * | 2020-08-01 | 2020-10-23 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807960A (en) * | 2020-08-01 | 2020-10-23 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
| CN111807960B (en) * | 2020-08-01 | 2022-04-22 | 浙江亦龙新材料有限公司 | Preparation process of isooctyl acrylate |
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Address after: 314004 bujiao Road, Jiaxing Industrial Park, Jiaxing City, Zhejiang Province Patentee after: Satellite Chemical Co.,Ltd. Address before: 314000 bujiao Road, Jiaxing Industrial Park, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG SATELLITE PETRO CHEMICAL Co.,Ltd. |
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