CN203820667U - Production system of tetrahydrophthalic anhydride - Google Patents
Production system of tetrahydrophthalic anhydride Download PDFInfo
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- CN203820667U CN203820667U CN201420211780.XU CN201420211780U CN203820667U CN 203820667 U CN203820667 U CN 203820667U CN 201420211780 U CN201420211780 U CN 201420211780U CN 203820667 U CN203820667 U CN 203820667U
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Abstract
The utility model discloses a production system of tetrahydrophthalic anhydride. The production system comprises a reaction kettle and a distillation kettle, wherein the reaction kettle is connected with the distillation kettle through a transfer pump; a raw material storage tank is connected with the reaction kettle through a metering pump; a vacuumizing hole, a nitrogen inlet, a raw material gas inlet, an emptying hole, a temperature meter and a pressure meter are arranged on the reaction kettle; a vacuum steaming unit is arranged on the distillation kettle; the vacuum steaming unit comprises a distillation tower, a condenser, a front cut fraction storage tank, a product storage tank, a vacuum buffer tank and a vacuum pump; the discharging hole of the product storage tank is connected with a flaker; stirring paddles are arranged in the reaction kettle and the distillation kettle. According to the production system provided by the utility model, a production process is simple, a solvent treatment and recovery process and corresponding equipment are removed, the production cycle is short, and the yield is high; front cut fractions and products are separately collected at the tail end of the production system, so that materials are well recycled.
Description
Technical field
The utility model relates to a kind of production system of tetrahydrophthalic anhydride, belongs to chemical industry equipment field.
Background technology
Tetrahydrophthalic anhydride, i.e. tetrahydronaphthalic anhydride, is a kind of important Chemicals, is widely used as epoxy curing agent, for the production of tensio-active agent, wetting agent, emulsifying agent, weedicide, plant growth inhibitor, sterilant, sterilant etc.The industrial production for tetrahydrophthalic anhydride, adopts Diene-addition synthesis method conventionally, obtains by the addition reaction between divinyl and MALEIC ANHYDRIDE.Production technique generally comprises two kinds of solvent method and scorifications.For solvent method, the use of its solvent, processing, recovery etc. tend to make production process and production system to become complicated, have extended reaction time, have increased production cost, also can pollute environment simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of production system of tetrahydrophthalic anhydride.
What the utility model solved is the defects such as the equipment composition existing in existing tetrahydrophthalic anhydride production system is complicated, the production cycle is long, product yield is low.
The technical scheme that the utility model technical solution problem adopts is: a kind of production system of tetrahydrophthalic anhydride, and described production system comprises reactor and still kettle; Described reactor is connected with still kettle by moving material pump; Raw material storage tank is connected with the opening for feed of reactor by volume pump; Described reactor is provided with vacuum orifice, nitrogen inlet, unstripped gas import, drain, thermometer and tensimeter; Described still kettle is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower, condenser, front-end volatiles storage tank, product storage tank, vacuum buffer tank and vacuum pump; Described front-end volatiles storage tank and the parallel connection of product storage tank are located between condenser and vacuum buffer tank; Between described front-end volatiles storage tank and product storage tank and condenser, be equipped with valve; Between described front-end volatiles storage tank and product storage tank and vacuum buffer tank, be also equipped with valve; The discharge port of described product storage tank is connected with flaker; In described reactor and still kettle, be equipped with stirring rake.
The discharge port of described front-end volatiles storage tank is connected with the opening for feed of described reactor.
Described flaker is rotary drum flaker.
The beneficial effects of the utility model are: compared with prior art, the production system that the utility model provides, production process is simple, has saved solvent treatment recovery and corresponding equipment, and with short production cycle, yield is high; Production system end separate collection front-end volatiles and product, make material obtain good recycle.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, a kind of production system of tetrahydrophthalic anhydride, described production system comprises reactor 1 and still kettle 10; Described reactor 1 is connected with still kettle 10 by moving material pump 18; MALEIC ANHYDRIDE storage tank 4 is connected with the opening for feed of reactor 1 by volume pump 3; Described reactor 1 is provided with vacuum orifice 2, nitrogen inlet 5, butadiene gas import 8, drain 9, thermometer 7 and tensimeter 6; When production, in reactor 1, pass into nitrogen by nitrogen inlet 5, then by vacuum orifice 2, reactor 1 is vacuumized, so repeatedly several times, just the air in reactor can be eliminated.Described still kettle 10 is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower 12, condenser 11, front-end volatiles storage tank 13, product storage tank 14, vacuum buffer tank 17 and vacuum pump 16; Described front-end volatiles storage tank 13 and 14 parallel connections of product storage tank are located between condenser 11 and vacuum buffer tank 17; Between described front-end volatiles storage tank 13 and product storage tank 14 and condenser 11, be equipped with valve; Between described front-end volatiles storage tank 13 and product storage tank 14 and vacuum buffer tank 17, be also equipped with valve; Be convenient to the separate collection of each cut in still-process.The discharge port of described front-end volatiles storage tank is connected with the opening for feed of described reactor; Front-end volatiles are mainly made up of raw material MALEIC ANHYDRIDE and a small amount of product tetrahydrophthalic anhydride, are imported in reactor 1, can realize the recycle of material.The discharge port of described product storage tank is connected with rotary drum flaker 15; After melting feed liquid contacts with rotary drum cooling in flaker, form material film in drum surface, by the heat exchange between material film and rotary drum, make to expect that film is cooling, crystallization, the material of crystallization is scraped by scraper, becomes flaked product.In described reactor and still kettle, be equipped with stirring rake.
Claims (3)
1. a production system for tetrahydrophthalic anhydride, is characterized in that described production system comprises reactor and still kettle; Described reactor is connected with still kettle by moving material pump; Raw material storage tank is connected with the opening for feed of reactor by volume pump; Described reactor is provided with vacuum orifice, nitrogen inlet, unstripped gas import, drain, thermometer and tensimeter; Described still kettle is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower, condenser, front-end volatiles storage tank, product storage tank, vacuum buffer tank and vacuum pump; Described front-end volatiles storage tank and the parallel connection of product storage tank are located between condenser and vacuum buffer tank; Between described front-end volatiles storage tank and product storage tank and condenser, be equipped with valve; Between described front-end volatiles storage tank and product storage tank and vacuum buffer tank, be also equipped with valve; The discharge port of described product storage tank is connected with flaker; In described reactor and still kettle, be equipped with stirring rake.
2. the production system of a kind of tetrahydrophthalic anhydride as claimed in claim 1, is characterized in that the discharge port of described front-end volatiles storage tank and the opening for feed of described reactor are connected.
3. the production system of a kind of tetrahydrophthalic anhydride as claimed in claim 1, is characterized in that described flaker is rotary drum flaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211780.XU CN203820667U (en) | 2014-04-29 | 2014-04-29 | Production system of tetrahydrophthalic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211780.XU CN203820667U (en) | 2014-04-29 | 2014-04-29 | Production system of tetrahydrophthalic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203820667U true CN203820667U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211780.XU Expired - Fee Related CN203820667U (en) | 2014-04-29 | 2014-04-29 | Production system of tetrahydrophthalic anhydride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203820667U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104945214A (en) * | 2015-05-19 | 2015-09-30 | 常熟联邦化工股份有限公司 | Purification method of coproduct durene enrichment solution in process of preparing gasoline from methanol |
| CN106000251A (en) * | 2016-06-21 | 2016-10-12 | 河南应用技术职业学院 | Double-kettle intermittent reaction device for pilot scale test |
| CN111732564A (en) * | 2020-06-13 | 2020-10-02 | 嘉兴南洋万事兴化工有限公司 | Method and synthesis system for preparing methyltetrahydrophthalic anhydride |
| CN112694460A (en) * | 2021-02-10 | 2021-04-23 | 河北龙亿环境工程有限公司 | Method and device for continuously synthesizing tetrahydrophthalic anhydride |
| CN113117627A (en) * | 2021-04-15 | 2021-07-16 | 濮阳市盛源能源科技股份有限公司 | Tetrahydrophthalic anhydride apparatus for producing |
-
2014
- 2014-04-29 CN CN201420211780.XU patent/CN203820667U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104945214A (en) * | 2015-05-19 | 2015-09-30 | 常熟联邦化工股份有限公司 | Purification method of coproduct durene enrichment solution in process of preparing gasoline from methanol |
| CN106000251A (en) * | 2016-06-21 | 2016-10-12 | 河南应用技术职业学院 | Double-kettle intermittent reaction device for pilot scale test |
| CN111732564A (en) * | 2020-06-13 | 2020-10-02 | 嘉兴南洋万事兴化工有限公司 | Method and synthesis system for preparing methyltetrahydrophthalic anhydride |
| CN111732564B (en) * | 2020-06-13 | 2023-06-02 | 嘉兴南洋万事兴化工有限公司 | Method for preparing methyltetrahydrophthalic anhydride and synthesis system |
| CN112694460A (en) * | 2021-02-10 | 2021-04-23 | 河北龙亿环境工程有限公司 | Method and device for continuously synthesizing tetrahydrophthalic anhydride |
| CN112694460B (en) * | 2021-02-10 | 2022-07-01 | 河北龙亿环境工程有限公司 | Method and device for continuously synthesizing tetrahydrophthalic anhydride |
| CN113117627A (en) * | 2021-04-15 | 2021-07-16 | 濮阳市盛源能源科技股份有限公司 | Tetrahydrophthalic anhydride apparatus for producing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20200429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |