CN203820668U - Production system of hexahydrophthalic anhydride - Google Patents
Production system of hexahydrophthalic anhydride Download PDFInfo
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- CN203820668U CN203820668U CN201420211806.0U CN201420211806U CN203820668U CN 203820668 U CN203820668 U CN 203820668U CN 201420211806 U CN201420211806 U CN 201420211806U CN 203820668 U CN203820668 U CN 203820668U
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- kettle
- storage tank
- production system
- hydrogenation
- still
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Abstract
The utility model discloses a production system of hexahydrophthalic anhydride. The production system comprises a hydrogenation kettle, a filter and a distillation kettle, wherein the discharging hole of the distillation kettle is connected with the feeding hole of the filter, the discharging hole of the filter is connected with the feeding hole of a filter liquor storage tank, and the discharging hole of the filter liquor storage tank is connected with the feeding hole of the distillation kettle; a raw material storage tank is connected with the feeding hole of the hydrogenation kettle through a metering pump; a vacuumizing hole, a nitrogen inlet, a hydrogen inlet, a temperature meter, a pressure meter and a catalyst storage tank are arranged on the hydrogenation kettle; a vacuum steaming unit is arranged on the distillation kettle; the vacuum steaming unit comprises a distillation tower, a condenser, a product storage tank, a vacuum buffer tank and a vacuum pump; stirring paddles are arranged in the hydrogenation kettle and the distillation kettle. The production system provided by the utility model is used for preparing hexahydrophthalic anhydride by adopting a melting hydrogenation method, and has the advantages of high product yield, low environmental harm, short reaction cycle, simple production equipment, low production cost and the like.
Description
Technical field
The utility model relates to a kind of production system of HHPA, belongs to chemical industry equipment field.
Background technology
HHPA full name hexahydrophthalic anhydride, HHPA write a Chinese character in simplified form in English.Molecular formula C
8h
10o
3.HHPA is the indispensable starting material of production polyester high-grade paint, the Alkyd/melamine Paint of producing with HHPA replacement aromatic series polyprotonic acid, Amino Polyester paint, Polyester Paint, polyurethane paint, powder coating etc., can significantly improve fresh degree of reflecting and the gloss of coating, reduce viscosity, improve solid content, especially can increase substantially the weathering resistance of coating.HHPA, except for the production of Polyester Paint, is also the raw material of producing softening agent, sterilant, rust-preventive agent, weedicide etc.Along with the develop rapidly of information industry, the specification of quality of semi-conductor plastic cement and potting compound is improved day by day, demand increases day by day, and HHPA is obtained widespread use as epoxy curing agent in this field.
It is a kind of conventional industrial process that tetrahydrophthalic anhydride shortening is prepared HHPA.Hexahydrophthalic anhydride is to be made by shortening by Tetra Hydro Phthalic Anhydride, will be through two these links of bond activation of Tetra Hydro Phthalic Anhydride in the process of hydrogenation, this pair of key is easy to shift, cause hydrogenation not thorough, simultaneously under the effect of hydrogen atom, also very easily there is condensation, hydrogenolysis, the side reaction such as crosslinked in acid anhydrides, generation is difficult to separated high boiling point and lower-boiling impurity, not only affect reaction conversion ratio, selectivity and yield, and high boiling point by-products produced easily coking under temperature of reaction, be adsorbed on catalyst surface, cause poisoning of catalyst.Tetra Hydro Phthalic Anhydride is close with hexahydrophthalic anhydride boiling point, and boiling point is high again, and reaction finishes rear being difficult to and carries out effective separation by traditional separation methods such as rectifying, has a strong impact on quality product.
Summary of the invention
The purpose of this utility model is to provide a kind of production system of HHPA.
The utility model solves is the defects such as the product yield that exists of existing HHPA production system is low, by product is many, equipment is complicated, environmental pollution is large.
The technical scheme that the utility model technical solution problem adopts is: a kind of production system of HHPA, and described production system comprises hydrogenation still, strainer and still kettle; The discharge port of described hydrogenation still is connected with the opening for feed of strainer, and the discharge port of described strainer is connected with the opening for feed of filtrate tanks, and the discharge port of described filtrate tanks is connected with the opening for feed of still kettle; Raw material storage tank is connected with the opening for feed of hydrogenation still by volume pump; Described hydrogenation still is provided with vacuum orifice, nitrogen inlet, hydrogen inlet, thermometer, tensimeter and catalyzer storage tank; Described still kettle is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower, condenser, product storage tank, vacuum buffer tank and vacuum pump; In described hydrogenation still and still kettle, be equipped with stirring rake.
The tank body of described raw material storage tank is provided with heating jacket outward.
The front end of described nitrogen inlet is provided with two branch roads, and a road is directly connected with the kettle of hydrogenation still, and another road is connected with catalyzer storage tank.
The discharge port of described hydrogenation still is positioned at the middle and upper part of kettle.
The beneficial effects of the utility model are: compared with prior art, the production system that the utility model provides, by melting hydrogenation method, prepare HHPA, there is the advantages such as product yield is high, environmental hazard is little, reaction time is short, production unit is simple, production cost is low.
Accompanying drawing explanation
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 HHPA, described production system comprises hydrogenation still 1, strainer 11 and still kettle 13; The discharge port of described hydrogenation still 1 is connected with the opening for feed of filter 11, and the discharge port of described strainer 11 is connected with the opening for feed of filtrate tanks 12, and the discharge port of described filtrate tanks 12 is connected with the opening for feed of still kettle 13.Raw material storage tank 5 is connected with the opening for feed of hydrogenation still 1 by volume pump 3; The tank body of described raw material storage tank 5 is provided with heating jacket 4 outward, before raw material tetrahydrophthalic anhydride is put into hydrogenation still 1, should first heat and make its melting.The discharge port of described hydrogenation still 1 is positioned at the middle and upper part of kettle.Described hydrogenation still 1 is provided with vacuum orifice 2, nitrogen inlet 9, hydrogen inlet 6, thermometer 8, tensimeter 7 and catalyzer storage tank 10; The front end of described nitrogen inlet 9 is provided with two branch roads, and a road is directly connected with the kettle of hydrogenation still, and another road is connected with catalyzer storage tank 10, by being connected with hydrogenation still kettle after catalyzer storage tank again; During production, by nitrogen inlet 9, in kettle, pass into nitrogen, then by vacuum orifice 2, kettle is vacuumized, so repeatedly several times, just the air in still can be eliminated; After nitrogen branch road is connected with catalyzer storage tank 10, can guarantee the inert gas environment in catalyzer storage tank, keep the catalytic activity of catalyzer.Described still kettle 13 is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower 14, condenser 15, product storage tank 16, vacuum buffer tank 18 and vacuum pump 17; In described hydrogenation still 1 and still kettle 13, be equipped with stirring rake.The discharge port of described hydrogenation still is positioned at the middle and upper part of kettle, after hydrogenation reaction finishes, by nitrogen, the upper strata hydraulic pressure in kettle is gone out to filtered while hot.
Claims (4)
1. a production system for HHPA, is characterized in that described production system comprises hydrogenation still, strainer and still kettle; The discharge port of described hydrogenation still is connected with the opening for feed of strainer, and the discharge port of described strainer is connected with the opening for feed of filtrate tanks, and the discharge port of described filtrate tanks is connected with the opening for feed of still kettle; Raw material storage tank is connected with the opening for feed of hydrogenation still by volume pump; Described hydrogenation still is provided with vacuum orifice, nitrogen inlet, hydrogen inlet, thermometer, tensimeter and catalyzer storage tank; Described still kettle is provided with vacuum steaming unit; Described vacuum steaming unit comprises distillation tower, condenser, product storage tank, vacuum buffer tank and vacuum pump; In described hydrogenation still and still kettle, be equipped with stirring rake.
2. the production system of a kind of HHPA as claimed in claim 1, is characterized in that the tank body of described raw material storage tank is provided with heating jacket outward.
3. the production system of a kind of HHPA as claimed in claim 1, is characterized in that the front end of described nitrogen inlet is provided with two branch roads, and a road is directly connected with the kettle of hydrogenation still, and another road is connected with catalyzer storage tank.
4. the production system of a kind of HHPA as claimed in claim 1, is characterized in that the discharge port of described hydrogenation still is positioned at the middle and upper part of kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211806.0U CN203820668U (en) | 2014-04-29 | 2014-04-29 | Production system of hexahydrophthalic anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420211806.0U CN203820668U (en) | 2014-04-29 | 2014-04-29 | Production system of hexahydrophthalic anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203820668U true CN203820668U (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420211806.0U Expired - Fee Related CN203820668U (en) | 2014-04-29 | 2014-04-29 | Production system of hexahydrophthalic anhydride |
Country Status (1)
| Country | Link |
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| CN (1) | CN203820668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392899A (en) * | 2018-03-15 | 2018-08-14 | 濮阳市盛源能源科技股份有限公司 | A kind of device and its technique of removing 1,2- cyclohexane cyclohexanedimethanodibasics |
-
2014
- 2014-04-29 CN CN201420211806.0U patent/CN203820668U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108392899A (en) * | 2018-03-15 | 2018-08-14 | 濮阳市盛源能源科技股份有限公司 | A kind of device and its technique of removing 1,2- cyclohexane cyclohexanedimethanodibasics |
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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 |