CN202621125U - High-pressure reaction unit - Google Patents
High-pressure reaction unit Download PDFInfo
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- CN202621125U CN202621125U CN 201220177227 CN201220177227U CN202621125U CN 202621125 U CN202621125 U CN 202621125U CN 201220177227 CN201220177227 CN 201220177227 CN 201220177227 U CN201220177227 U CN 201220177227U CN 202621125 U CN202621125 U CN 202621125U
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- pressure reaction
- pipeline
- reaction kettle
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Abstract
The utility model relates to a high-pressure reaction unit, in particular to a high-pressure reaction kettle device in which liquid chemically reacts. The technical problems that the conventional high-pressure reaction kettle can only react in a closed system generally, and cannot meet requirements of a high-temperature and high-pressure reaction system in which gas is required to be fed continuously, simultaneously, tail gas is required to be discharged continuously, and liquid chemically reacts are solved. According to the technical scheme, a cooling return pipeline is arranged on the upper part of the outside of a high-pressure reaction kettle, so that a large quantity of gas generated in a reaction process is condensed to form a back flow, and the back flow enters the reaction kettle again to continuing reacting. In the cooling return pipeline, a gas downward-flowing pipeline (10), a condenser (14) and a feed/return three-way pipe (18) are sequentially connected with one another, and a gas flow direction and a condensed liquid flowing direction are vertically downward, so that condensed liquid easily returns to the reaction kettle to continue reacting. The cooling return pipeline with the structure is good in cooling effect, the reaction conversion rate is increased, and the cost is saved.
Description
Technical field
The utility model relates to a kind of high pressure reaction assembly, especially a kind of reaction under high pressure kettle device that has liquid to participate in chemical reaction.
Background technology
Existing autoclave is only installed a plurality of valves in the top or the bottom of agitated reactor, is used for charging or discharging.All valve closings during reaction, reactant reacts under kettle inner sealing environment.The agitated reactor of this structure is difficult to satisfy the demand and feeds gas continuously, and need constantly give off the requirement of the high-temperature high-voltage reaction system of tail gas.The reaction that for example utilizes air oxidation of cyclohexane to prepare cyclohexanol and cyclohexanone because the content of oxygen constantly descends in the interior composition of air of agitated reactor, needs constantly to replenish ozone, need constantly give off the air tail gas of oxygen deprivation simultaneously.In addition, because cyclohexane oxidation is under the situation of heating and pressurizing, to carry out, common reaction temperature is more than 120 ℃, and the boiling point of cyclohexane is 80.7 ℃, has a large amount of cyclohexanes to have little time reaction and is just taken out of agitated reactor by air tail gas.In process of production, through detecting, also cyclohexanol of some and cyclohexanone are taken out of by air tail gas, cause very big waste.
The utility model content
The utility model generally can only react in closed system in order to solve existing autoclave; Be difficult to satisfy some needs and constantly feed gas; Need constantly give off tail gas simultaneously; Especially there is liquid to participate in the problem of the high-temperature high-voltage reaction system of chemical reaction, a kind of novel reaction under high pressure kettle device is provided.
The utility model provides following technical solution: the cooling for reflux pipeline is installed on autoclave ectosome top.The cooling for reflux pipeline of being installed mainly comprises: the up pipeline 9 of the gas that links to each other with agitated reactor 2; The descending pipeline 10 of gas; Condenser 14; Charging/backflow the three-way pipe 18 that is connected with feed pipe 16 through inlet valve 17.
As the further improvement to technique scheme, the descending pipeline of gas 10, condenser 14 and charging/backflow three-way pipe 18 are linked in sequence.So, the flow direction of gas flow direction and condensed fluid all is straight down, makes condensed fluid pass back into agitated reactor more easily and proceeds reaction.
As to technique scheme improvement further, on condenser 14 ectosome tops blow-down pipe 12 is installed, blow-down pipe 12 1 ends stretch out condenser 14 outsides, and the other end puts in condenser 14 inside and extends to downwards near condenser 14 bottoms always.The condenser of this structure makes hot gas before being discharged from as tail gas, and the distance of experience is longer in condenser pipe 13, and cooling effect is better.
The utility model compared with prior art has following advantage: because the installation of cooling for reflux pipeline; Making a large amount of condensation of gas that produced in the course of reaction form refluxes; Again get into agitated reactor and proceed reaction, improved the conversion ratio of reaction, practiced thrift cost.The condenser of laboratory synthesis under normal pressure device is installed between discharging opening and the gas ascending tube road usually in the prior art, and condensed fluid can pass back into agitated reactor; But for high pressure reaction assembly; The flow direction of gases at high pressure is opposite with the flow direction of condensed fluid; Because the impetus that gases at high pressure make progress; Makes condensed fluid be difficult to pass back into agitated reactor and continue reaction, and the mounting means that condenser 12 is adopted in the utility model reaction unit makes that the flow direction of gas flow direction and condensed fluid all is straight down that condensed fluid passes back into agitated reactor more easily; In addition, in the utility model reaction unit, the internal structure of condenser 14 design makes the be condensed distance of pipe 13 coolings of hot gas increase, and cooling effect is better.
Description of drawings
Fig. 1 is the structural representation of the utility model high pressure reaction assembly.
Among Fig. 1,1. heating jacket; 2. autoclave; 3. agitator; 4. thermometer boss and thermocouple thermometer; 5. discharging opening; 6. Pressure gauge; 7. stirring motor; 8.1# return valve; 9. the up pipeline of gas; 10. the descending pipeline of gas; 11. atmospheric valve; 12. blow-down pipe; 13. condenser pipe; 14. condenser; 15.2# return valve; 16. feed pipe; 17. inlet valve; 18. charging/backflow three-way pipe; 19. autoclave inlet valve; 20. autoclave feed pipe.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further to describe.
The main body of the utility model high pressure reaction assembly is an autoclave; The cooling for reflux pipeline is installed on its ectosome top, and its structure mainly comprises the descending pipeline of the up pipeline of feed pipe 16, autoclave 2, gas 9, gas 10, condenser 14, charging/backflow three-way pipe 18, blow-down pipe 12 and an if valve.
Specifically, autoclave 2 outsides are equipped with heating muff 1, and autoclave 2 inside are equipped with agitator 3, thermometer boss and thermocouple thermometer 4 and autoclave feed pipe 20.The ectosome top of autoclave 2 is equipped with Pressure gauge 6 and stirring motor 7.The top of autoclave 2 has discharging opening 5, connects the descending pipeline of the up pipeline of 1# return valve 8, gas 9, gas 10, condenser 14,2# return valve 15, charging/backflow three-way pipe 18 and autoclave inlet valve 19 in order successively.Feed pipe 16 is connected with charging/backflow three-way pipe 18 through inlet valve 17.
The cavity inside of condenser 14 is equipped with crooked condenser pipe 13.On condenser 14 ectosome tops blow-down pipe 12 is installed, blow-down pipe 12 1 ends stretch out condenser 14 outsides, and the other end puts in condenser 14 inside and extends to downwards near condenser 14 bottoms always.
Various arrows among Fig. 1 have marked the operation principle of this system.Be example with the reaction that utilizes air oxidation of cyclohexane below, the function that technical scheme possessed and the implementation of the utility model are done further to describe.
When (1) solid arrow had marked reaction, air got into from feed pipe 16, passes through inlet valve 17 successively; Charging/backflow three-way pipe 18, autoclave inlet valve 19, autoclave feed pipe 20 gets into agitated reactor; Under design temperature and pressure, react with cyclohexane and mixture of catalysts; Part unreacted cyclohexane, a small amount of cyclohexanol and cyclohexanone completely is heated and becomes steam, along with air tail gas gets into the up pipeline of gas 9, the descending pipeline 10 of gas and condenser 14 successively, in condenser 14; Most of cyclohexane, cyclohexanol and cyclohexanone are cooled and become liquid; Again pass back into autoclave 2 through 2# return valve 15, charging/backflow three-way pipe 18 and autoclave inlet valve 19 successively and continue to participate in reaction, improved the conversion ratio of reaction, practiced thrift cost; Main component is that the air tail gas of nitrogen is discharged from blow-down pipe 12 via atmospheric valve 11, through regulating the size that atmospheric valve 11 can be regulated the exhaust flow that gives off, and conditioned reaction system pressure inside.
When (2) dotted arrow has marked reaction, the flow direction of cooling medium in the condenser pipe 13, cooling medium can be salt solution or circulation running water, takes to get into from the bottom inlet port of condenser pipe 13, from it the mode of portion's outlet discharge.
Certainly; The structure of the condenser 14 in the technical scheme of the utility model is not limited to above-mentioned form; If there is other form can make that the flow direction of gas flow direction and condensed fluid all is straight down; Condensed fluid passes back into agitated reactor more easily, also belongs to the protection domain of the utility model.
Claims (3)
1. high pressure reaction assembly; It is characterized in that: the cooling for reflux pipeline is installed, charging/backflow three-way pipe (18) that the cooling for reflux pipeline of being installed mainly comprises the gas up pipeline (9) continuous with agitated reactor (2), the descending pipeline of gas (10), condenser (14), is connected with feed pipe (16) through inlet valve (17) on autoclave ectosome top.
2. according to the described high pressure reaction assembly of claim 1, it is characterized in that: the descending pipeline of gas (10), condenser (14) and charging/backflow three-way pipe (18) is linked in sequence.
3. according to claim 1 or 2 described high pressure reaction assemblies; It is characterized in that: blow-down pipe (12) is installed on condenser (14) ectosome top; Blow-down pipe (12) one ends stretch out condenser (14) outside, and the other end puts in condenser (14) inside and extends to downwards near condenser (14) bottom always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220177227 CN202621125U (en) | 2012-04-25 | 2012-04-25 | High-pressure reaction unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220177227 CN202621125U (en) | 2012-04-25 | 2012-04-25 | High-pressure reaction unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202621125U true CN202621125U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220177227 Expired - Fee Related CN202621125U (en) | 2012-04-25 | 2012-04-25 | High-pressure reaction unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202621125U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175047A (en) * | 2017-07-11 | 2017-09-19 | 南通协鑫热熔胶有限公司 | A kind of autoclave steam retracting device |
| CN110433734A (en) * | 2019-08-14 | 2019-11-12 | 南通鸿富达利化工有限公司 | A kind of pinacoline condensation reaction exhaust apparatus |
| CN112954831A (en) * | 2021-01-27 | 2021-06-11 | 浙江万森电热设备股份有限公司 | Control device of explosion-proof electric heating equipment |
-
2012
- 2012-04-25 CN CN 201220177227 patent/CN202621125U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175047A (en) * | 2017-07-11 | 2017-09-19 | 南通协鑫热熔胶有限公司 | A kind of autoclave steam retracting device |
| CN110433734A (en) * | 2019-08-14 | 2019-11-12 | 南通鸿富达利化工有限公司 | A kind of pinacoline condensation reaction exhaust apparatus |
| CN112954831A (en) * | 2021-01-27 | 2021-06-11 | 浙江万森电热设备股份有限公司 | Control device of explosion-proof electric heating equipment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20180425 |