CN212174839U - Device for synthesizing methallyl alcohol - Google Patents
Device for synthesizing methallyl alcohol Download PDFInfo
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- CN212174839U CN212174839U CN202020664691.6U CN202020664691U CN212174839U CN 212174839 U CN212174839 U CN 212174839U CN 202020664691 U CN202020664691 U CN 202020664691U CN 212174839 U CN212174839 U CN 212174839U
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Abstract
The utility model relates to a device of synthetic methallyl alcohol, including reation kettle, dropwise add jar, condensation reflux unit, aftertreatment cauldron, rectifying column, methallyl alcohol finished product storage tank, first waste liquid treatment cauldron, organic layer recovery tank, second waste liquid treatment cauldron, filter equipment and byproduct storage tank. The reaction kettle is connected with the post-treatment kettle; the dripping tank is connected with the reaction kettle; the condensation reflux device is connected with the reaction kettle; the post-treatment kettle is respectively connected with the feeding of the rectifying tower and the first waste liquid treatment kettle; the methallyl alcohol finished product storage tank is connected with the rectifying tower; the first waste liquid treatment kettle is respectively connected with the second waste liquid treatment kettle and the organic layer recovery tank; the second waste liquid treatment kettle is connected with a filtering device; the byproduct storage tank is connected with the filtering device. The utility model discloses the device can improve methallyl alcohol's yield, retrieves organic solvent and carries out purification treatment to the waste liquid, realizes the zero release basically, is favorable to environmental protection.
Description
Technical Field
The utility model relates to a chemical products production field, specifically a device for synthesizing methallyl alcohol.
Background
Methallyl alcohol is a very important organic intermediate which itself can undergo self-polymerization and copolymerization reactions. Methacrylic acid and esters can be prepared by taking methallyl alcohol as a starting material, and the products can be used in the living field as food additives, spices and the like, can also be used as additives in the synthesis of surfactants and resins for the production of industrial products, and can also be used as monomers for synthesizing high molecular materials.
Currently, the most industrially used method for the production of methallyl alcohol is the direct hydrolysis of methallyl chloride. Although the hydrolysis method is widely used, there are problems with this method: (1) a large amount of organic solvent is added in the hydrolysis process, and the solvent is difficult to recover; (2) a lot of byproducts are generated, so that the yield of the target product is low; (3) the waste liquid produced by the reaction can cause environmental pollution. Therefore, how to solve the problems of the process for producing methallyl alcohol by a hydrolysis method becomes a challenge for manufacturers in the industry.
Disclosure of Invention
The utility model aims to solve the technical problem that a device of synthetic methallyl alcohol is provided, the device can improve the yield of methallyl alcohol, retrieves organic solvent and carries out purification treatment to the waste liquid, realizes the zero release basically, is favorable to environmental protection.
The utility model adopts the technical proposal that: an apparatus for synthesizing methallyl alcohol, characterized by: the device comprises a reaction kettle, a dripping tank, a condensation reflux device, a post-treatment kettle, a rectifying tower, a methallyl alcohol finished product storage tank, a first waste liquid treatment kettle, an organic layer recovery tank, a second waste liquid treatment kettle, a filtering device and a byproduct storage tank;
the discharge hole of the reaction kettle is connected with the feed inlet of the post-treatment kettle; the discharge hole of the dripping tank is connected with the feed inlet of the reaction kettle; the condensation reflux device is connected with the reaction kettle; one discharge port of the post-treatment kettle is connected with a feed port of the rectifying tower, and the other discharge port of the post-treatment kettle is connected with a feed port of the first waste liquid treatment kettle; the feed inlet of the methallyl alcohol finished product storage tank is connected with the discharge outlet of the rectifying tower; one discharge port of the first waste liquid treatment kettle is connected with a feed port of the second waste liquid treatment kettle, and the other discharge port of the first waste liquid treatment kettle is connected with a feed port of the organic layer recovery tank; the discharge hole of the second waste liquid treatment kettle is connected with the feed inlet of the filtering device; and a feed inlet of the byproduct storage tank is connected with a discharge outlet of the filtering device.
The reaction kettle is provided with a stirring device and a heating device.
And a liquid flowmeter is arranged on the dripping tank.
The first waste liquid treatment kettle is a reaction kettle with a stirring device.
The second waste liquid treatment kettle is a reaction kettle with a heating device, a stirring device and a condensing device.
The discharge hole of the reaction kettle is connected with the feed inlet of the post-treatment kettle through a pipeline with a pump; the discharge hole of the post-treatment kettle is connected with the feed inlet of the rectifying tower through a pipeline with a pump; the discharge hole of the post-treatment kettle is connected with the feed inlet of the first waste liquid treatment kettle through a pipeline with a pump; the discharge port of the first waste liquid treatment kettle is connected with the feed inlet of the second waste liquid treatment kettle through a pipeline with a pump.
The utility model has the advantages that:
1. the device improves the yield of the target product methallyl alcohol by slowly dripping the raw material methallyl chloride into the alkali liquor.
2. The device adopts a rectification mode to treat the organic layer containing the methallyl alcohol, removes water and other impurities in the organic layer, avoids using a traditional desiccant precipitation method, saves the cost and improves the yield.
3. This device handles production waste liquid, obtains the by-product at last and can regard as the industrial salt to use, and the water condensation of evaporation is retrieved and is recycled, has realized the zero release basically, does not have the pollution to the environment.
Drawings
FIG. 1 shows an apparatus for synthesizing methallyl alcohol.
In the figure: reaction kettle 1, dropwise add jar 2, condensation reflux unit 3, aftertreatment cauldron 4, rectifying tower 5, methallyl alcohol finished product storage tank 6, first waste liquid treatment cauldron 7, organic layer recovery tank 8, second waste liquid treatment cauldron 9, filter equipment 10, byproduct storage tank 11.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, an apparatus for synthesizing methallyl alcohol, characterized in that: the device comprises a reaction kettle 1, a dripping tank 2, a condensation reflux device 3, a post-treatment kettle 4, a rectifying tower 5, a methallyl alcohol finished product storage tank 6, a first waste liquid treatment kettle 7, an organic layer recovery tank 8, a second waste liquid treatment kettle 9, a filtering device 10 and a byproduct storage tank 11;
the discharge hole of the reaction kettle 1 is connected with the feed hole of the post-treatment kettle 4; the discharge hole of the dripping tank 2 is connected with the feed inlet of the reaction kettle 1; the condensation reflux device 3 is connected with the reaction kettle 1; one discharge port of the post-treatment kettle 4 is connected with a feed port of the rectifying tower 5, and the other discharge port of the post-treatment kettle is connected with a feed port of the first waste liquid treatment kettle 7; a feed inlet of the methallyl alcohol finished product storage tank 6 is connected with a discharge outlet of the rectifying tower 5; one discharge port of the first waste liquid treatment kettle 7 is connected with a feed port of the second waste liquid treatment kettle 9, and the other discharge port of the first waste liquid treatment kettle is connected with a feed port of the organic layer recovery tank 8; the discharge hole of the second waste liquid treatment kettle 9 is connected with the feed hole of the filtering device 10; and a feeding hole of the byproduct storage tank 11 is connected with a discharging hole of the filtering device 10.
Preferably, the reaction kettle 1 is a reaction kettle with a stirring device and a heating device.
Preferably, the dropping tank 2 is provided with a liquid flow meter.
Preferably, the first waste liquid treatment kettle 7 is a reaction kettle with a stirring device.
Preferably, the second waste liquid treatment kettle 9 is a reaction kettle with a heating device, a stirring device and a condensing device.
Preferably, the discharge hole of the reaction kettle 1 is connected with the feed hole of the post-treatment kettle 4 through a pipeline with a pump; the discharge hole of the post-treatment kettle 4 is connected with the feed inlet of the rectifying tower 5 through a pipeline with a pump; the discharge hole of the post-treatment kettle 4 is connected with the feed hole of the first waste liquid treatment kettle 7 through a pipeline with a pump; the discharge hole of the first waste liquid treatment kettle 7 is connected with the feed inlet of the second waste liquid treatment kettle 9 through a pipeline with a pump.
The implementation process is as follows:
a certain amount of water, solid alkali, catalyst and polymerization inhibitor are put into a reaction kettle 1, and a proper amount of methallyl chloride is put into a dropwise adding tank 2. And starting a stirring device of the reaction kettle 1 to uniformly mix the materials in the reaction kettle 1. And (3) starting a heating device of the reaction kettle 1, starting a discharge valve of the dripping tank (2) when the temperature of the materials in the reaction kettle 1 reaches 40-45 ℃, and controlling the discharge speed according to the flow value of the liquid flowmeter to finish dripping the methallyl chloride in the dripping tank (2) within 2.5 hours. After the dropwise addition, the condensation reflux device 3 is started, and the reaction kettle 1 is continuously heated, so that the materials in the reaction kettle are subjected to reflux reaction for 3 hours at 66-67 ℃. After the reaction, the material was transferred to the post-treatment tank 4 by a pump, and the material was allowed to stand for layering, wherein the upper layer was an organic layer and the lower layer was a water layer. A discharge valve at the bottom of the post-treatment kettle 4 is opened, and the lower-layer materials are transferred to a first waste liquid treatment kettle 7 by a pump. After the lower layer material is transported, a No. 2 discharge valve at the bottom of the post-treatment kettle 4 is opened, and the upper layer material is transported to the rectifying tower 5 by a pump. And starting a rectifying tower 5 to rectify the upper-layer material, wherein the fraction at the temperature of 113-115 ℃ is the target product methallyl alcohol. Collecting the fraction at 113-115 ℃, and transferring the fraction to a methallyl alcohol finished product storage tank for later use.
And starting the stirring device of the first waste liquid treatment kettle 7, uniformly stirring the lower-layer material, and standing the material to separate the material into layers, wherein the upper layer is an organic layer and the lower layer is a water layer. The first discharge valve at the bottom of the first waste liquid treatment kettle 7 is opened, and the lower layer material is transferred to the second waste liquid treatment kettle 9 by a pump. After the lower layer material is transported, the No. 2 discharge valve at the bottom of the first waste liquid treatment kettle 7 is opened, and the lower layer material is transported to the organic layer recovery tank 8 by a pump. And starting a heating device, a stirring device and a condensing device of the second waste liquid treatment kettle 9 to evaporate the lower-layer materials at 95 ℃, and condensing the evaporated water by the condensing device and then recovering the condensed water. And after evaporation, transferring the residual materials in the second waste liquid treatment kettle 9 to a filtering device 10 for filtering, and transferring filter residues to a byproduct storage tank 11 for later use.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (6)
1. An apparatus for synthesizing methallyl alcohol, characterized by: comprises a reaction kettle (1), a dripping tank (2), a condensation reflux device (3), a post-treatment kettle (4), a rectifying tower (5), a methallyl alcohol finished product storage tank (6), a first waste liquid treatment kettle (7), an organic layer recovery tank (8), a second waste liquid treatment kettle (9), a filtering device (10) and a byproduct storage tank (11);
the discharge hole of the reaction kettle (1) is connected with the feed hole of the post-treatment kettle (4); the discharge hole of the dripping tank (2) is connected with the feed inlet of the reaction kettle (1); the condensation reflux device (3) is connected with the reaction kettle (1); one discharge port of the post-treatment kettle (4) is connected with a feed port of the rectifying tower (5), and the other discharge port of the post-treatment kettle is connected with a feed port of the first waste liquid treatment kettle (7); a feed inlet of the methallyl alcohol finished product storage tank (6) is connected with a discharge outlet of the rectifying tower (5); one discharge port of the first waste liquid treatment kettle (7) is connected with a feed port of the second waste liquid treatment kettle (9), and the other discharge port of the first waste liquid treatment kettle is connected with a feed port of the organic layer recovery tank (8); the discharge hole of the second waste liquid treatment kettle (9) is connected with the feed inlet of the filtering device (10); and a feed inlet of the byproduct storage tank (11) is connected with a discharge outlet of the filtering device (10).
2. An apparatus for synthesizing methallyl alcohol as described in claim 1 wherein: the reaction kettle (1) is provided with a stirring device and a heating device.
3. An apparatus for synthesizing methallyl alcohol as described in claim 1 wherein: and a liquid flowmeter is arranged on the dripping tank (2).
4. An apparatus for synthesizing methallyl alcohol as described in claim 1 wherein: the first waste liquid treatment kettle (7) is a reaction kettle with a stirring device.
5. An apparatus for synthesizing methallyl alcohol as described in claim 1 wherein: the second waste liquid treatment kettle (9) is a reaction kettle with a heating device, a stirring device and a condensing device.
6. An apparatus for synthesizing methallyl alcohol as described in claim 1 wherein: the discharge hole of the reaction kettle (1) is connected with the feed hole of the post-treatment kettle (4) through a pipeline with a pump; the discharge hole of the post-treatment kettle (4) is connected with the feed inlet of the rectifying tower (5) through a pipeline with a pump; the discharge hole of the post-treatment kettle (4) is connected with the feed hole of the first waste liquid treatment kettle (7) through a pipeline with a pump; the discharge hole of the first waste liquid treatment kettle (7) is connected with the feed inlet of the second waste liquid treatment kettle (9) through a pipeline with a pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020664691.6U CN212174839U (en) | 2020-04-27 | 2020-04-27 | Device for synthesizing methallyl alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020664691.6U CN212174839U (en) | 2020-04-27 | 2020-04-27 | Device for synthesizing methallyl alcohol |
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| Publication Number | Publication Date |
|---|---|
| CN212174839U true CN212174839U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020664691.6U Active CN212174839U (en) | 2020-04-27 | 2020-04-27 | Device for synthesizing methallyl alcohol |
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| CN (1) | CN212174839U (en) |
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2020
- 2020-04-27 CN CN202020664691.6U patent/CN212174839U/en active Active
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