CN108889248A - A kind of method of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction - Google Patents
A kind of method of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction Download PDFInfo
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- CN108889248A CN108889248A CN201810759042.1A CN201810759042A CN108889248A CN 108889248 A CN108889248 A CN 108889248A CN 201810759042 A CN201810759042 A CN 201810759042A CN 108889248 A CN108889248 A CN 108889248A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/02—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by cracking a single hydrocarbon or a mixture of individually defined hydrocarbons or a normally gaseous hydrocarbon fraction
- C07C4/06—Catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
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- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a kind of methods of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction, including：Sampling device comprising injection measurement pump, for pressing metered shot reactant；Reactor is connect with sampling device, and the reactor is equipped with fixed reaction bed, and the fixed reaction bed is equipped with catalyst layer；Detection device comprising gas chromatographic detection instrument is connect with reactor；Temperature control device is separately positioned between reactor outer layer and reactor front end and reactor and detection device；Nitrogen cylinder, is equipped with control valve and flow control valve is connect with reactor；Apparatus of the present invention reactor is directly connected to detection device, detection device is equipped with gas chromatograph, and the present invention takes charging and discharging preheating mode, guarantee that charging and discharging are all gas phases, gas-chromatography can be directly entered to be monitored on-line, experimental procedure is reduced, reduce experimental error, it is more convenient to complete in laboratory, significantly improves conventional efficient and precision.
Description
Technical field
The present invention relates to chemical reaction equipment technical fields, and in particular to a kind of n-hexane catalytic cracking reaction device and its
The method of n-hexane catalytic cracking reaction.
Background technique
The reaction unit of n-hexane catalytic cracking is normally due to be gas-liquid-solid phase reaction, the product of generation is also relatively more multiple
It is miscellaneous：Coke, methane, the C1-C6 component such as ethane, propane, ethylene, propylene, butane, so that reaction unit is typically complex, at
The step of this is also high, and product has a liquid and gas, therefore product analysis is usually gas phase and liquid phase separate detection, increases experiment
And experimental error.
Summary of the invention
One object of the present invention provides a kind of n-hexane catalytic cracking reaction device aiming at the above problem, for
The experiment of n-hexane catalytic cracking reaction, reactor are directly connected to detection device, and detection device is equipped with gas chromatograph, and this
Invention take charging and discharging preheating mode, guarantee charging and discharging be all gas phase, can be directly entered gas-chromatography into
Row on-line monitoring, reduces experimental procedure, reduces experimental error, is more convenient to complete in laboratory, significantly improves conventional efficient and essence
Degree.
Technical solution provided by the invention is：
A kind of n-hexane catalytic cracking reaction device, including：
Sampling device comprising injection measurement pump, for pressing metered shot reactant；
Reactor is connect with sampling device, and the reactor is equipped with fixed reaction bed, and the fixed reaction bed is equipped with and urges
Agent layer；
Detection device comprising gas chromatographic detection instrument is connect with reactor；
Temperature control device is separately positioned between reactor outer layer and reactor front end and reactor and detection device；
Nitrogen cylinder, is equipped with control valve and flow control valve is connect with reactor.
Preferably, control valve is equipped between the sampling device and reactor.
Preferably, it is equipped with control valve between the detection device and reactor, and is separately positioned on detection device and anti-
Answer the temperature control device front and back between device.
Preferably, the fixed reaction bed is detachably arranged.
Preferably, the pipeline before the temperature control device that reactor rear end is arranged in is also connected with cooling device, produces
Object collection device and switch valve.
N-hexane Catalytic Cracking Unit of Measure is carried out using the n-hexane catalytic cracking reaction device the present invention also provides a kind of
The method answered, including：Step 1: before the reaction, catalyst layer is installed on fixed reaction bed, catalyst layer is 40 purpose of partial size
Then molecular sieve catalyst opens control valve and flow control valve, be passed through nitrogen and exclude the oxygen in reactor and pipeline,
It closes control valve and flow control valve, the temperature control device by the way that reactor outer layer is arranged in carries out preheating 400-500 to reactor
DEG C 5-10 minutes；
Step 2: quantitative reactant n-hexane is added by injection measurement pump, open between sampling device and reactor
Control valve, 175-300 DEG C of preheating is carried out to reactant by the way that the temperature control device of reactor front end is arranged in；
Step 3: the temperature control device that reactor outer layer is arranged in adjusting temperature to be made to the reaction temperature 450- of reactor
550 DEG C, reactant reacts at being 450-550 DEG C in temperature with molecular sieve catalyst；
Step 4: waiting after the reaction was completed, the control valve between opening detecting device and reactor, setting detection device is adjusted
The temperature of temperature control device between reactor is 175-300 DEG C, so that product is in gaseous state and is entered detection device and is examined
It surveys.Beneficial effects of the present invention are as follows：
1), apparatus of the present invention are provided with temperature control device on the pipeline of charging and preheat for reactant, in advance to reaction
Object is heated, and the reaction efficiency of reaction is improved；
2), apparatus of the present invention reactor and detection device are directly connected to detection device equipped with gas chromatograph, between also set
There is temperature control device, keeps gas phase that can directly be detected by gas chromatograph so that product comes out from reactor, directly detect
It can be reduced the experimental error of detection, improve experimental precision.
Detailed description of the invention
Fig. 1 is n-hexane catalytic cracking reaction schematic device of the present invention,
In figure：Sampling device 101, control valve 102,105,110,112,114, temperature control device 103,108,111, nitrogen cylinder
104, flow control valve 106, reactor 107, fixed reaction bed 109, detection device 113, cooling device 115, collection of products dress
Set 116.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
In the description of the present invention, it should be noted that the instructions such as term " top ", " bottom end ", " upper end ", " lower end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
As shown in Figure 1,
A kind of n-hexane catalytic cracking reaction device, including：
Sampling device 101 comprising injection measurement pump, for pressing metered shot reactant；
Reactor 107 is connect with sampling device 101, and the reactor 107 is equipped with fixed reaction bed 109, the fixation
Reaction bed 109 is equipped with catalyst layer；
Detection device 113 comprising gas chromatographic detection instrument is connect with reactor 107；
Temperature control device 108,103,111 is separately positioned on 107 outer layer of reactor and 107 front end of reactor and reaction
Between device 107 and detection device 113；
Nitrogen cylinder 104, is equipped with control valve 105 and flow control valve 106 is connect with reactor 107.
Wherein another preferred embodiment is equipped with control valve 102 between the sampling device 101 and reactor 107.
Wherein another preferred embodiment, between the detection device 113 and reactor 107 be equipped with control valve 110,
112, and 111 front and back of temperature control device being separately positioned between detection device 113 and reactor 107.
Wherein another preferred embodiment, the fixed detachably setting of reaction bed 109.
Wherein another preferred embodiment, the pipeline before the temperature control device 111 that 107 rear end of reactor is set
It is also connected with cooling device 115, collection of products device 116 and switch valve 114.
N-hexane Catalytic Cracking Unit of Measure is carried out using the n-hexane catalytic cracking reaction device the present invention also provides a kind of
The method answered, including：Step 1: before the reaction, catalyst layer is installed on fixed reaction bed 109, catalyst layer is partial size 40
Then molecules of interest sieve catalyst opens control valve 105 and flow control valve 106, is passed through nitrogen for reactor 107 and pipeline
In oxygen exclude, control valve 105 and flow control valve 106 are closed, by the temperature control device that 107 outer layer of reactor is arranged in
108 pairs of reactors 107 carry out preheating 400-500 DEG C 5-10 minutes；
Step 2: quantitative reactant n-hexane is added by injection measurement pump, sampling device 101 and reactor are opened
Control valve 102 between 107, the temperature control device 103 by the way that 107 front end of reactor is arranged in carry out preheating 175- to reactant
300℃；
Step 3: the temperature control device 108 that 107 outer layer of reactor is arranged in adjusting temperature to be made to the reaction temperature of reactor 107
Degree is 450-550 DEG C, and reactant reacts at being 450-550 DEG C in temperature with molecular sieve catalyst；
Step 4: waiting after the reaction was completed, the control valve 110,112 between opening detecting device 113 and reactor 107, adjust
The temperature of temperature control device 111 between section setting detection device 113 and reactor 107 is 175-300 DEG C, and product is made to be in gas
State enters detection device 113 and is detected.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and embodiment shown and described herein.
Claims (6)
1. a kind of n-hexane catalytic cracking reaction device, which is characterized in that including：
Sampling device comprising injection measurement pump, for pressing metered shot reactant；
Reactor is connect with sampling device, and the reactor is equipped with fixed reaction bed, and the fixed reaction bed is equipped with catalyst
Layer；
Detection device comprising gas chromatographic detection instrument is connect with reactor；
Temperature control device is separately positioned between reactor outer layer and reactor front end and reactor and detection device；
Nitrogen cylinder, is equipped with control valve and flow control valve is connect with reactor.
2. n-hexane catalytic cracking reaction device as described in claim 1, which is characterized in that the sampling device and reactor
Between be equipped with control valve.
3. n-hexane catalytic cracking reaction device as described in claim 1, which is characterized in that the detection device and reactor
Between be equipped with control valve, and before and after being separately positioned on the temperature control device between detection device and reactor.
4. n-hexane catalytic cracking reaction device as described in claim 1, which is characterized in that the fixed reaction bed is detachable
Setting.
5. n-hexane catalytic cracking reaction device as claimed in claim 3, which is characterized in that be arranged after reactor described
Pipeline before the temperature control device at end is also connected with cooling device, collection of products device and switch valve.
6. a kind of carry out n-hexane catalytic cracking reaction using n-hexane catalytic cracking reaction device as claimed in claims 1-5
Method, which is characterized in that
Including：Step 1: before the reaction, catalyst layer is installed on fixed reaction bed, catalyst layer is 40 molecules of interest of partial size
Then sieve catalyst opens control valve and flow control valve, be passed through nitrogen and exclude the oxygen in reactor and pipeline, close
Control valve and flow control valve, the temperature control device by the way that reactor outer layer is arranged in carry out 400-500 DEG C of 5- of preheating to reactor
10 minutes；
Step 2: quantitative reactant n-hexane is added by injection measurement pump, the control between sampling device and reactor is opened
Valve processed, the temperature control device by the way that reactor front end is arranged in carry out 175-300 DEG C of preheating to reactant；
Step 3: the temperature control device that reactor outer layer is arranged in adjusting temperature is made 450-550 DEG C of reaction temperature of reactor,
Reactant reacts at being 450-550 DEG C in temperature with molecular sieve catalyst；
Step 4: wait after the reaction was completed, the control valve between opening detecting device and reactor, setting detection device and anti-is adjusted
The temperature for answering the temperature control device between device is 175-300 DEG C, so that product is in gaseous state and is entered detection device and is detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759042.1A CN108889248A (en) | 2018-07-11 | 2018-07-11 | A kind of method of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810759042.1A CN108889248A (en) | 2018-07-11 | 2018-07-11 | A kind of method of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction |
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| CN108889248A true CN108889248A (en) | 2018-11-27 |
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| CN201810759042.1A Withdrawn CN108889248A (en) | 2018-07-11 | 2018-07-11 | A kind of method of n-hexane catalytic cracking reaction device and its n-hexane catalytic cracking reaction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187017A (en) * | 2019-05-09 | 2019-08-30 | 中触媒新材料股份有限公司 | A kind of propylene oxide on-line period device and method |
-
2018
- 2018-07-11 CN CN201810759042.1A patent/CN108889248A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110187017A (en) * | 2019-05-09 | 2019-08-30 | 中触媒新材料股份有限公司 | A kind of propylene oxide on-line period device and method |
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