CN202786063U - High-purity natural benzaldehyde catalytic reaction rectification production plant - Google Patents
High-purity natural benzaldehyde catalytic reaction rectification production plant Download PDFInfo
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- CN202786063U CN202786063U CN2012203593912U CN201220359391U CN202786063U CN 202786063 U CN202786063 U CN 202786063U CN 2012203593912 U CN2012203593912 U CN 2012203593912U CN 201220359391 U CN201220359391 U CN 201220359391U CN 202786063 U CN202786063 U CN 202786063U
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Abstract
The utility model relates to a high-purity natural benzaldehyde catalytic reaction rectification production plant. A cassia oil feed port is arranged at the top of a catalytic reaction rectification section, a vapor feed port is arranged at the bottom of a catalytic reaction rectification tower, hydrolysate natural benzaldehyde is produced from the top of the catalytic rectification tower, and residual oil is discharged from the bottom of the catalytic reaction rectification tower. The plant is characterized in that the reactant raw materials for producing the natural benzaldehyde are cassia oil and water. By using the technique for producing natural benzaldehyde provided by the utility model, cinnamic aldehyde in the cassia oil does not need to be separated and purified, and the cassia oil can be directly used as the raw material to carry out reaction. The utility model has the following advantages: the two unit operations of the reaction of preparing natural benzaldehyde by hydrolyzing cinnamic aldehyde and the purification of the benzaldehyde are organically coupled in one device, thereby saving the equipment investment and reducing the subsequent operating cost.
Description
Technical field
The utility model relates to natural benzaldehyde production technical field in the field of fine chemical, particularly relates to adopting Oleum Cinnamomi to utilize the hydrolysis of catalytic reaction rectification technology to produce the device of natural benzaldehyde under alkaline condition.
Background technology
China's Chinese cassia tree aboundresources, Oleum Cinnamomi is the particularly traditional export commodity in Guangxi of China always, producing natural benzaldehyde by Oleum Cinnamomi is to solve one of natural benzaldehyde important channel in short supply, also is one of effective means that solves the further deep processing of China's Oleum Cinnamomi.
Phenyl aldehyde is important fine chemical product, also is second largest main spices, is widely used in the productions such as medicine, spices, dyestuff.Compare with the phenyl aldehyde that chemical synthesis is produced, the advantages such as that the natural benzaldehyde that is made by extracted form natural plant has is nontoxic, environmental protection can be used for the industries such as spices, food, beverage, medicine.Natural benzaldehyde is colourless or weak yellow liquid, is mainly derived from amygdaloside in walnut, the Semen Armeniacae Amarum or the phenylacrolein in the natural meat oil of bay.Because contained prussiate separates difficulty in the Semen Armeniacae Amarum oil, has greatly limited its application in foodstuffs industry, therefore the method by phenylacrolein production natural benzaldehyde obtains broad development.The industry that natural benzaldehyde has the call is soft drink and chewing gum industry, and the soft drink company such as U.S.'s Coca-Cola, pepsi cola adopt natural benzaldehyde as a kind of formula material, and be in great demand every year.But the output of natural benzaldehyde does not also satisfy demand far away at present, and the world market is in the buyer's market.Therefore, developing low-cost, high efficiency natural benzaldehyde production method are extremely urgent.
At present, natural benzaldehyde mainly adopts cinnamic aldehyde and water to react preparation under alkaline condition, and the industrial batch reactor that mostly adopts enters the rectifying separation operation after reaction is finished again, and the natural benzaldehyde in the reaction product is separated.Because this reaction is a kind of reversible reaction, carrying out along with reaction, the content of natural benzaldehyde raises gradually in the reaction mixture, reactant concn reduces gradually, speed of reaction constantly descends, and reacts the restriction that final transformation efficiency is subjected to chemical equilibrium, can't be further improved, therefore, reaction conversion ratio and speed of reaction all are subject to impact to a certain degree.
The catalytic reaction rectification technology is to use day by day widely a kind of will the reaction and process intensification technology that separation coupling carries out in same equipment simultaneously in the chemical industry.The catalytic reaction rectification technology can constantly shift out product by rectifying from reaction zone, make the reactant concn of reaction zone maintain higher degree, thereby keeps the speed of reaction of reaction zone to maintain higher level.In addition, be coupling in the equipment and carry out owing to will react with rectifying, aspect facility investment this technology also than react with the flow process of separating separate operation more economically.Also the catalytic reaction rectification technology is not applied at present Patents and the report of natural benzaldehyde preparation process.
Summary of the invention
The purpose of this utility model provides a kind of catalysis reaction rectifying device that the high-purity natural phenyl aldehyde is produced that is applicable to, the catalysis reaction rectifying device that uses the utility model to provide is produced natural benzaldehyde, has that technical process is simple, facility investment is lower, easy to operate, energy consumption is lower and the purity of target product natural benzaldehyde is very high and reaction conversion ratio advantages of higher very.
The catalysis reaction rectifying device that high-purity natural phenyl aldehyde of the present utility model is produced, wherein the Oleum Cinnamomi opening for feed is arranged on catalytic reaction rectification section top, the water vapour opening for feed is arranged on the catalytic rectifying tower bottom, the hydrolysate natural benzaldehyde is from the catalytic rectifying tower overhead extraction, and the residue Residual oil is discharged at the bottom of the catalytic rectifying tower tower.
The reactant feed that the characteristics of the utility model device are to produce natural benzaldehyde is Oleum Cinnamomi and water, adopting device of the present utility model to produce natural benzaldehyde need not first the phenylacrolein separating-purifying in the Oleum Cinnamomi can directly be used from Oleum Cinnamomi and reacts as raw material.
The technical solution of the utility model is as follows:
The catalysis reaction rectifying device that high-purity natural phenyl aldehyde of the present utility model is produced comprises catalytic rectifying tower (3), overhead condenser (8), trim the top of column storage tank (10) and relevant feeding line and the pipeline that is connected above equipment; Oleum Cinnamomi raw material (1) feeding line is connected to the top of the catalyst reaction section (5) of catalytic rectifying tower (3), water vapour charging (2) pipeline is connected to the bottom of catalytic rectifying tower (3), be connected by pipeline with materials at bottom of tower extraction pump (15) import at the bottom of catalytic rectifying tower (3) tower, materials at bottom of tower extraction pump (15) exports the material extraction pipeline (16) of ining succession; Catalytic rectifying tower (3) overhead vapours (7) is connected with overhead condenser (8) gas phase import by pipeline, overhead condenser (8) liquid-phase outlet is connected by pipeline (9) with trim the top of column storage tank (10), overhead product material (13) extraction pipeline links to each other with trim the top of column storage tank (10) liquid-phase outlet, and trim the top of column storage tank (10) liquid-phase outlet also is connected with catalytic rectifying tower (3) cat head by pipeline simultaneously.
Wherein catalytic rectifying tower (3) is comprised of with stripping section (6) rectifying section (4), catalyst reaction section (5) or is formed or formed or only be comprised of catalyst reaction section (5) by catalyst reaction section (5) and stripping section (6) by rectifying section (4) and catalyst reaction section (5); Rectifying section (4) column internals is filler or tower tray, and catalyst reaction section (5) column internals is catalytic filler or catalysis tower tray, and stripping section (6) column internals is filler or tower tray.
The flow process that operates according to device of the present utility model is: the catalytic reaction rectification method of high-purity natural phenyl aldehyde of the present invention production is: will be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the top fed of the catalyst reaction section (5) in the catalytic rectifying tower (3), water vapour (2) enters at the bottom of by catalytic rectifying tower (3) tower, enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from catalytic rectifying tower (3) top gaseous phase outlet (7) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into catalytic rectifying tower (3) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction.
If catalytic rectifying tower (3) is by rectifying section (4), when catalyst reaction section (5) forms with stripping section (6), its flow process is: will be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the bottom feed of rectifying section (4), water vapour (2) is entered in the tower by the top of profit reduction and reserving sections (6), enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from the top gaseous phase outlet (7) of rectifying section (4) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into rectifying section (4) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction.
If catalytic rectifying tower (3) is by rectifying section (4) and catalyst reaction section (5) when forming, its flow process is: will be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the bottom feed of rectifying section (4), water vapour (2) is entered in the tower by the bottom of catalyst reaction section (5), enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from the top gaseous phase outlet (7) of rectifying section (4) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into rectifying section (4) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction;
If catalytic rectifying tower (3) is by catalyst reaction section (5) and stripping section (6) when forming, its flow process is: will be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the top fed of catalyst reaction section (5), water vapour (2) is entered in the tower by the top of profit reduction and reserving sections (6), enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from the top gaseous phase outlet (7) of catalyst reaction section (5) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into catalyst reaction section (5) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction;
If catalytic rectifying tower (3) is only by catalyst reaction section (5) when forming, its flow process is: will be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the top fed of catalyst reaction section (5), water vapour (2) is entered in the tower by the bottom of catalyst reaction section (5), enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from the top gaseous phase outlet (7) of catalyst reaction section (5) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into catalyst reaction section (5) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction.
The working pressure of catalytic rectifying tower (3) is 100Pa-100kPa; Catalytic rectifying tower (3) reflux ratio is 2-18; Feed water steam (2) is 2-30 with the mass ratio of Oleum Cinnamomi (1); The catalyzer usage quantity is 32kg/m
3-300kg/m
3
The used catalytic tower internals of the utility model are characterised in that: (1) used catalytic tower internals can either be accelerated phenylacrolein generation hydrolysis reaction and generate phenyl aldehyde, can provide again enough gas-to-liquid contact surface-area to finish mass transfer and separate task, the phenyl aldehyde that reaction the is generated catalyst reaction section that speeds away guarantees that catalyst reaction section internal reaction substrate concentration is higher, production concentration is lower.(2) used catalytic tower internals can not introduced other materials to reaction system, guarantee only to contain phenylacrolein and water in the reaction system, in order to guaranteed the natural sex of product natural benzaldehyde.(3) life-span of these catalytic tower internals longer, need not frequent.
The catalysis reaction rectifying device that high-purity natural phenyl aldehyde of the present utility model is produced, its advantage is reaction and two unit operations of phenyl aldehyde purification rectifying separation with phenylacrolein hydrolysis natural benzaldehyde processed, organically be coupled in the equipment and carry out simultaneously, both saved facility investment, reduced again follow-up process cost, water vapour and Oleum Cinnamomi counter current contact in the catalytic tower internals have effectively solved Oleum Cinnamomi and water stratification and have caused this major issue of loose contact simultaneously.Adopt the catalysis reaction rectifying device of high-purity natural phenyl aldehyde of the present utility model production when phenylacrolein transformation efficiency and natural benzaldehyde yield are provided, greatly reduce the production cost of natural benzaldehyde, a year economic benefit improves greatly.
Description of drawings
Fig. 1 is the catalytic reaction rectification process flow diagram that the high-purity natural phenyl aldehyde is produced, and wherein catalytic rectifying tower is comprised of with stripping section (6) rectifying section (4), catalyst reaction section (5).
Fig. 2 is the catalytic reaction rectification process flow diagram that the high-purity natural phenyl aldehyde is produced, and wherein catalytic rectifying tower is comprised of rectifying section (4) and catalyst reaction section (5).
Fig. 3 is the catalytic reaction rectification process flow diagram that the high-purity natural phenyl aldehyde is produced, and wherein catalytic rectifying tower is comprised of catalyst reaction section (5) and stripping section (6).
Fig. 4 is the catalytic reaction rectification process flow diagram that the high-purity natural phenyl aldehyde is produced, and wherein catalytic rectifying tower only is comprised of catalyst reaction section (5).
Embodiment
Below in conjunction with accompanying drawing method provided by the present invention and device are further detailed.
The utility model is achieved by the following technical solution:
As shown in Figure 1, comprise catalytic rectifying tower (3), overhead condenser (8), trim the top of column storage tank (10) and relevant feeding line and the pipeline that is connected above equipment; Oleum Cinnamomi raw material (1) feeding line is connected to the top of the catalyst reaction section (5) of catalytic rectifying tower (3), water vapour charging (2) pipeline is connected to the bottom of catalytic rectifying tower (3), be connected by pipeline with materials at bottom of tower extraction pump (15) import at the bottom of catalytic rectifying tower (3) tower, materials at bottom of tower extraction pump (15) exports the material extraction pipeline (16) of ining succession; Catalytic rectifying tower (3) overhead vapours (7) is connected with overhead condenser (8) gas phase import by pipeline, overhead condenser (8) liquid-phase outlet is connected by pipeline (9) with trim the top of column storage tank (10), overhead product material (13) extraction pipeline links to each other with trim the top of column storage tank (10) liquid-phase outlet, and trim the top of column storage tank (10) liquid-phase outlet also is connected with catalytic rectifying tower (3) cat head by pipeline simultaneously.
Wherein as shown in Figure 1, catalytic rectifying tower (3) is comprised of with stripping section (6) rectifying section (4), catalyst reaction section (5), is applied among the embodiment 1; Perhaps as shown in Figure 2, formed by rectifying section (4) and catalyst reaction section (5), be applied among the embodiment 2; Perhaps as shown in Figure 3, formed by catalyst reaction section (5) and stripping section (6), be applied among the embodiment 3; Perhaps as shown in Figure 4, only formed by catalyst reaction section (5), be applied among the embodiment 4; Rectifying section (4) column internals is filler or tower tray, and catalyst reaction section (5) column internals is catalytic filler or catalysis tower tray, and stripping section (6) column internals is filler or tower tray.
Be rich in the Oleum Cinnamomi raw material (1) of phenylacrolein by the top fed of the catalyst reaction section (5) in the catalytic rectifying tower (3), water vapour (2) enters at the bottom of by catalytic rectifying tower (3) tower, enter the reaction that in catalyst reaction section (5), is hydrolyzed of liquid phase Oleum Cinnamomi in the tower and water vapour, the natural benzaldehyde that generates enters overhead condenser (8) from catalytic rectifying tower (3) top gaseous phase outlet (7) and carries out condensation, enter trim the top of column storage tank (10) through condensed natural benzaldehyde, natural benzaldehyde product (11) from the outflow of trim the top of column storage tank (10) liquid-phase outlet, a part flows into catalytic rectifying tower (3) as trim the top of column (12), and another part is as high-purity natural phenyl aldehyde product (13) extraction.
The operating procedure condition of the catalysis reaction rectifying device of high-purity natural phenyl aldehyde of the present utility model production is: the working pressure of catalytic rectifying tower (3) is 100Pa-100kPa; Catalytic rectifying tower (3) reflux ratio is 2-18; Feed water steam (2) is 2-30 with the mass ratio of Oleum Cinnamomi (1); The catalyzer usage quantity is 32kg/m
3-300kg/m
3
Equipment of the present utility model is widely used in being hydrolyzed under alkaline condition by phenylacrolein the process of natural benzaldehyde processed, in order to illustrate that better the utility model is in the advantage aspect product purity and the yield, choose wherein that three application examples are illustrated, but therefore do not limit the scope of application of this equipment.
The utility model device is used for Oleum Cinnamomi under alkaline condition, is hydrolyzed natural benzaldehyde process processed, the Oleum Cinnamomi treatment capacity is 10kg/h, identical with flow process described in the utility model, comprise extraction pump at the bottom of catalytic rectifying tower, overhead condenser, trim the top of column storage tank and the tower, wherein because this process namely needs the cat head purification to need again to purify at the bottom of the tower, therefore this catalytic rectifying tower is comprised of rectifying section (4), catalyst reaction section (5) and stripping section (6) as shown in Figure 1.The absolute pressure of catalytic rectifying tower is 100Pa, and the reflux ratio of catalytic rectifying tower is 2, and the mass ratio of feed water steam and Oleum Cinnamomi is 2, and the catalyzer usage quantity is 32kg/m
3, the content of phenylacrolein is 65% in the Oleum Cinnamomi.
Behind said process, the purity of main products natural benzaldehyde can reach 98.1%, and the yield of natural benzaldehyde can reach more than 90%.
For the natural benzaldehyde production process that reacting first of routine separated afterwards, in the identical situation of the conditions such as raw material charging, system pressure, catalyzer, the purity that obtains natural benzaldehyde can only reach 96%, and the yield of natural benzaldehyde only can reach about 75%.
This shows that purity and the yield of the natural benzaldehyde of the catalysis reaction rectifying device production of the high-purity natural phenyl aldehyde production that the utility model relates to all are higher than ordinary method.
The utility model device is used for Oleum Cinnamomi under alkaline condition, is hydrolyzed natural benzaldehyde process processed, the Oleum Cinnamomi treatment capacity is 1000kg/h, identical with flow process described in the utility model, comprise extraction pump at the bottom of catalytic rectifying tower, overhead condenser, trim the top of column storage tank and the tower, wherein because this process only needs cat head to purify, therefore this catalytic rectifying tower forms (5) by rectifying section (4) and catalyst reaction section as shown in Figure 2.The absolute pressure of catalytic rectifying tower is 100kPa, and the reflux ratio of catalytic rectifying tower is 18, and the mass ratio of feed water steam and Oleum Cinnamomi is 30, and the catalyzer usage quantity is 300kg/m
3, the content of phenylacrolein is 85% in the Oleum Cinnamomi.
Behind said process, the purity of main products natural benzaldehyde can reach 99.1%, and the yield of natural benzaldehyde can reach more than 93%.
For the natural benzaldehyde production process that reacting first of routine separated afterwards, in the identical situation of the conditions such as raw material charging, system pressure, catalyzer, the purity that obtains natural benzaldehyde can only reach 97%, and the yield of natural benzaldehyde only can reach about 80%.
This shows that purity and the yield of the natural benzaldehyde of the catalysis reaction rectifying device production of the high-purity natural phenyl aldehyde production that the utility model relates to all are higher than ordinary method.
The utility model device is used for Oleum Cinnamomi under alkaline condition, is hydrolyzed natural benzaldehyde process processed, the Oleum Cinnamomi treatment capacity is 100kg/h, identical with flow process described in the utility model, comprise extraction pump at the bottom of catalytic rectifying tower, overhead condenser, trim the top of column storage tank and the tower, wherein owing to this process only needs to purify at the bottom of the tower, therefore this catalytic rectifying tower is comprised of catalyst reaction section (5) and stripping section (6) as shown in Figure 3.The absolute pressure of catalytic rectifying tower is 10kPa, and the reflux ratio of catalytic rectifying tower is 10, and the mass ratio of feed water steam and Oleum Cinnamomi is 15, and the catalyzer usage quantity is 110kg/m
3, the content of phenylacrolein is 75% in the Oleum Cinnamomi.
Behind said process, the purity of main products natural benzaldehyde can reach 98.8%, and the yield of natural benzaldehyde can reach more than 91%.
For the natural benzaldehyde production process that reacting first of routine separated afterwards, in the identical situation of the conditions such as raw material charging, system pressure, catalyzer, the purity that obtains natural benzaldehyde can only reach 96.3%, and the yield of natural benzaldehyde only can reach about 74%.
This shows that purity and the yield of the natural benzaldehyde of the catalysis reaction rectifying device production of the high-purity natural phenyl aldehyde production that the utility model relates to all are higher than ordinary method.
Embodiment 4
The utility model device is used for Oleum Cinnamomi under alkaline condition, is hydrolyzed natural benzaldehyde process processed, the Oleum Cinnamomi treatment capacity is 300kg/h, identical with flow process described in the utility model, comprise extraction pump at the bottom of catalytic rectifying tower, overhead condenser, trim the top of column storage tank and the tower, wherein because this process does not namely need the cat head purification not need to purify at the bottom of the tower yet, therefore this catalytic rectifying tower only is comprised of catalyst reaction section (5) as shown in Figure 4.The absolute pressure of catalytic rectifying tower is 10kPa, and the reflux ratio of catalytic rectifying tower is 4, and the mass ratio of feed water steam and Oleum Cinnamomi is 5, and the catalyzer usage quantity is 90kg/m
3, the content of phenylacrolein is 82% in the Oleum Cinnamomi.
Behind said process, the purity of main products natural benzaldehyde can reach 98.4%, and the yield of natural benzaldehyde can reach more than 93%.
For the natural benzaldehyde production process that reacting first of routine separated afterwards, in the identical situation of the conditions such as raw material charging, system pressure, catalyzer, the purity that obtains natural benzaldehyde can only reach 96.5%, and the yield of natural benzaldehyde only can reach about 73%.
This shows that purity and the yield of the natural benzaldehyde of the catalysis reaction rectifying device production of the high-purity natural phenyl aldehyde production that the utility model relates to all are higher than ordinary method.
The catalysis reaction rectifying device that the high-purity natural phenyl aldehyde that the utility model proposes is produced, be described by preferred embodiment, person skilled obviously can be changed or suitably change and combination equipment as herein described within not breaking away from content of the present invention, spirit and scope, realizes the utility model technology.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are deemed to be included in the utility model spirit, scope and the content.
Claims (2)
1. the catalytic reaction rectification production equipment of a high-purity natural phenyl aldehyde comprises catalytic rectifying tower (3), overhead condenser (8), trim the top of column storage tank (10) and relevant feeding line and the pipeline that is connected above equipment; Oleum Cinnamomi raw material (1) feeding line is connected to the top of the catalyst reaction section (5) of catalytic rectifying tower (3), water vapour charging (2) pipeline is connected to the bottom of catalytic rectifying tower (3), be connected by pipeline with materials at bottom of tower extraction pump (15) import at the bottom of catalytic rectifying tower (3) tower, materials at bottom of tower extraction pump (15) exports the material extraction pipeline (16) of ining succession; Catalytic rectifying tower (3) overhead vapours (7) is connected with overhead condenser (8) gas phase import by pipeline, overhead condenser (8) liquid-phase outlet is connected by pipeline (9) with trim the top of column storage tank (10), overhead product material (13) extraction pipeline links to each other with trim the top of column storage tank (10) liquid-phase outlet, and trim the top of column storage tank (10) liquid-phase outlet also is connected with catalytic rectifying tower (3) cat head by pipeline simultaneously.
2. the catalytic reaction rectification production equipment of high-purity natural phenyl aldehyde as claimed in claim 1 is characterized in that: catalytic rectifying tower (3) is comprised of with stripping section (6) rectifying section (4), catalyst reaction section (5); Perhaps formed by rectifying section (4) and catalyst reaction section (5); Perhaps formed by catalyst reaction section (5) and stripping section (6); Perhaps only formed by catalyst reaction section (5); Rectifying section (4) column internals is filler or tower tray, and catalyst reaction section (5) column internals is catalytic filler or catalysis tower tray, and stripping section (6) column internals is filler or tower tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203593912U CN202786063U (en) | 2012-07-23 | 2012-07-23 | High-purity natural benzaldehyde catalytic reaction rectification production plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203593912U CN202786063U (en) | 2012-07-23 | 2012-07-23 | High-purity natural benzaldehyde catalytic reaction rectification production plant |
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| CN202786063U true CN202786063U (en) | 2013-03-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766029A (en) * | 2012-07-23 | 2012-11-07 | 天津大学 | Catalytic reaction rectification production method and device for high-purity natural benzaldehyde |
| CN112316856A (en) * | 2020-09-01 | 2021-02-05 | 河北工业大学 | Equipment and method for producing ethylbenzene by catalytic reaction distillation with concentrated ethylene as raw material |
-
2012
- 2012-07-23 CN CN2012203593912U patent/CN202786063U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766029A (en) * | 2012-07-23 | 2012-11-07 | 天津大学 | Catalytic reaction rectification production method and device for high-purity natural benzaldehyde |
| CN102766029B (en) * | 2012-07-23 | 2014-03-05 | 天津大学 | Catalytic reaction rectification production method and device for high-purity natural benzaldehyde |
| CN112316856A (en) * | 2020-09-01 | 2021-02-05 | 河北工业大学 | Equipment and method for producing ethylbenzene by catalytic reaction distillation with concentrated ethylene as raw material |
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Granted publication date: 20130313 Effective date of abandoning: 20140305 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20140305 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |