CN217473505U - Diphenylmethane's apparatus for producing - Google Patents
Diphenylmethane's apparatus for producing Download PDFInfo
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- CN217473505U CN217473505U CN202221399329.6U CN202221399329U CN217473505U CN 217473505 U CN217473505 U CN 217473505U CN 202221399329 U CN202221399329 U CN 202221399329U CN 217473505 U CN217473505 U CN 217473505U
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Abstract
The utility model discloses a diphenylmethane production device, including reation kettle, cooling phase splitting cauldron, spent acid pans, filter, oil phase pans, multi-functional tower, benzene reflux drum, coarse product jar, rectifying column, vacuum unit, product jar, backwash pump, elevated tank, the reation kettle through the pipeline with the cooling phase splitting cauldron is connected, cooling phase splitting cauldron export links to each other with spent acid pans and filter import respectively, spent acid pans link to each other with reation kettle and elevated tank import respectively, the filter export links to each other with oil phase pans import, oil phase pans export links to each other with multi-functional tower entry, multi-functional tower top export links to each other with benzene reflux drum import; the bottom outlet of the multifunctional tower is connected with the inlet of the coarse product tank; the outlet of the crude product tank is connected with the inlet of the rectifying tower; the outlet of the rectifying tower is connected with the inlet of the product tank. The utility model discloses rational in infrastructure, easy operation, the environmental protection, low in production cost.
Description
Technical Field
The utility model relates to an organic chemical synthesis field, concretely relates to diphenylmethane's apparatus for producing.
Background
Diphenylmethane (DPM) is an important intermediate of perfumes, dyes and medicines. The product can be used as an important intermediate raw material in pharmaceutical and fine chemical industries; the compound is widely used for producing diphenhydramine hydrochloride and the like in medicine; the fine chemicals are often used as synergist or additive for pesticide to change the thermal stability of polyester and sprayed fuel. In recent years, due to the influence of the increase of the demand of related diphenylmethane manufacturing products, the demand of diphenylmethane is expanded, and the industrialization of the diphenylmethane manufacturing method has good market prospect and economic benefit.
Disclosure of Invention
In view of the above-mentioned drawbacks or deficiencies of the prior art, it would be desirable to provide a diphenylmethane production plant.
According to the technical scheme provided by the embodiment of the application, the production device of the diphenylmethane comprises a reaction kettle, a cooling phase splitting kettle, a waste acid intermediate tank, a filter, an oil phase intermediate tank, a multifunctional tower, a benzene reflux tank, a crude product tank, a rectifying tower, a vacuum unit, a product tank, a reflux pump and an elevated tank, wherein the reaction kettle is connected with the cooling phase splitting kettle through a pipeline; the bottom outlet of the multifunctional tower is connected with the inlet of the coarse product tank; the outlet of the crude product tank is connected with the inlet of the rectifying tower; the outlet of the rectifying tower is connected with the inlet of the product tank. The reaction kettle return line is provided with a water separator, and the reaction kettle is an enamel kettle. The vacuum unit adopts the combination of a water circulating pump and a secondary Roots blower. And heat tracing bands are arranged on the product tank and the pipeline of the rectifying tower.
To sum up, the beneficial effect of this application: the utility model discloses rational in infrastructure, easy operation, the environmental protection, low in production cost.
The utility model discloses install the water knockout drum on the reation kettle back flow line, reduce reaction system water content, improve reaction yield.
The utility model discloses the spent acid pans link to each other with reation kettle and high-order import respectively for the spent acid water that produces can be reused in catalytic reaction, also can be used to the ammonium sulfate post deamination, has avoided the waste acid to handle the environmental pollution who brings.
The utility model discloses benzene backward flow jar links to each other with the reation kettle import, and solvent benzene is retrieved in used repeatedly, has realized the rational utilization of resource.
The utility model discloses product jar and rectification pipeline are equipped with the companion torrid zone on, have avoided the diphenylmethane crystallization to block up the pipeline.
The utility model discloses reation kettle is the enamel kettle, and internal accessories and agitator also are enamel, and under sulphuric acid reaction system, corrosion resisting property is good, long service life.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the device.
The reference numbers in the figures: a reaction kettle-1, a phase separation kettle-2, a waste acid intermediate tank-3, a filter-4, an oil phase intermediate tank-5, a multifunctional tower-6, a benzene reflux tank-7, a crude product tank-8, a rectification tower-9, a vacuum unit-10, a product tank-11, a reflux pump-12, an overhead tank-13 and a pipeline-14.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1: the utility model discloses a concrete processing procedure: adding raw materials of benzene and concentrated sulfuric acid into a reaction kettle 1, dropwise adding benzyl alcohol into the reaction kettle 1 through a flow controller, controlling the reaction temperature to be 82-83 ℃, and controlling the dropwise adding time of the benzyl alcohol to be 8 hours; in the synthesis process, water is separated from benzene and water vapor through a water separator after the benzene and the water vapor are cooled by a condenser, so that the water content in a reaction system is reduced, and the reaction yield is improved; the reaction liquid is cooled to 70 ℃, then enters a cooling phase splitting kettle 2 through a pipeline 14 for standing and phase splitting, the waste acid water enters a waste acid intermediate tank 3 through the pipeline 14, one part of the waste acid water returns to the reaction kettle 1 through a reflux pump 12, the catalyst consumption is saved, the cost is reduced, and the other part of the waste acid water is pumped into a head tank 13 through a lift pump, so that the environmental pollution caused by waste acid treatment is avoided; after the waste acid water is separated out, sodium carbonate is added into the phase separation kettle 2 to neutralize a small amount of waste acid; filtering the neutralized reaction solution through a filter 4 to generate salt, and enabling the filtered oil phase to enter an oil phase intermediate tank 5; pumping the oil phase into a multifunctional tower 6 through a pump, distilling the solvent benzene to a benzene reflux tank 7 at normal pressure, refluxing the distilled benzene to the reaction kettle 1 through a pipeline 14, and repeatedly recycling the solvent benzene, so that the reasonable utilization of resources is realized; the liquid in the multifunctional tower 6 enters a coarse product tank 8 through a feed opening; the crude product enters a diphenylmethane rectifying tower 9 through a pipeline 14 for purification, the pressure during purification is-100 kp, and a water circulating pump and a first-stage Roots blower and a second-stage Roots blower are combined in a vacuum unit 10; the purified product enters the product tank 11, and the product tank 11 and the pipeline of the rectifying tower 9 are provided with heat tracing bands, so that the blockage of the pipeline by diphenylmethane crystallization is avoided.
The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the invention according to the present application is not limited to the technical solutions in which the above-described technical features are combined in a specific manner, and also covers other technical solutions in which the above-described technical features or their equivalent are combined arbitrarily without departing from the inventive concept described above. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (4)
1. The utility model provides a diphenylmethane's apparatus for producing, includes reation kettle (1), cooling phase separation cauldron (2), spent acid pans (3), filter (4), oil phase pans (5), multi-functional tower (6), benzene reflux tank (7), coarse product jar (8), rectifying column (9), vacuum unit (10), product jar (11), backwash pump (12), elevated tank (13), characterized by: the reaction kettle (1) is connected with the cooling phase splitting kettle (2) through a pipeline (14), the outlet of the cooling phase splitting kettle (2) is respectively connected with the inlets of a waste acid intermediate tank (3) and a filter (4), the waste acid intermediate tank (3) is respectively connected with the inlets of the reaction kettle (1) and a head tank (13), the outlet of the filter (4) is connected with the inlet of an oil phase intermediate tank (5), the outlet of the oil phase intermediate tank (5) is connected with the inlet of a multifunctional tower (6), and the outlet of the top of the multifunctional tower (6) is connected with the inlet of a benzene reflux tank (7); the outlet at the bottom of the multifunctional tower (6) is connected with the inlet of the crude product tank (8); the outlet of the crude product tank (8) is connected with the inlet of the rectifying tower (9); the outlet of the rectifying tower (9) is connected with the inlet of the product tank (11).
2. The apparatus for producing diphenylmethane according to claim 1, wherein: the water separator is arranged on a reflux pipeline of the reaction kettle (1), and the reaction kettle (1) is an enamel kettle.
3. The apparatus for producing diphenylmethane according to claim 1, wherein: the vacuum unit (10) is formed by combining a water circulating pump and a secondary Roots blower.
4. The apparatus for producing diphenylmethane according to claim 1, wherein: the product tank (11) and the pipeline of the rectifying tower (9) are provided with heat tracing bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399329.6U CN217473505U (en) | 2022-06-07 | 2022-06-07 | Diphenylmethane's apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221399329.6U CN217473505U (en) | 2022-06-07 | 2022-06-07 | Diphenylmethane's apparatus for producing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217473505U true CN217473505U (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221399329.6U Active CN217473505U (en) | 2022-06-07 | 2022-06-07 | Diphenylmethane's apparatus for producing |
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| Country | Link |
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| CN (1) | CN217473505U (en) |
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2022
- 2022-06-07 CN CN202221399329.6U patent/CN217473505U/en active Active
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