CN108499615A - The high temperature circulation chloridization process of low temperature isomerization catalyst - Google Patents
The high temperature circulation chloridization process of low temperature isomerization catalyst Download PDFInfo
- Publication number
- CN108499615A CN108499615A CN201810330165.3A CN201810330165A CN108499615A CN 108499615 A CN108499615 A CN 108499615A CN 201810330165 A CN201810330165 A CN 201810330165A CN 108499615 A CN108499615 A CN 108499615A
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- China
- Prior art keywords
- high temperature
- circulation
- chlorination
- isomerization catalyst
- catalyst
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Classifications
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/16—Reducing
- B01J37/18—Reducing with gases containing free hydrogen
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/22—Halogenating
- B01J37/24—Chlorinating
Abstract
The present invention relates to a kind of high temperature circulation chloridization process of low temperature isomerization catalyst, using a kind of reduction and the integrated device of chlorination, after catalyst completes reducing process in a device, it is converted into high temperature circulation system, carrier gas recycles under the temperature condition more than 200 DEG C always, period supplements anhydrous Aluminum chloride using dosing vaporizer to system continuous uniform, makes material that chlorination reaction fully occur with the aluminium chloride in circulating air；After reaction, circulating air is emptied, and carries out absorption processing.Advantage is ingenious in design, and easy to use, catalyst successively completes reduction and depth chlorination process in a device, and at low cost, effect is good.
Description
Technical field
The present invention relates to the chlorination fields of low temperature isomerization catalyst, and in particular to a kind of height of low temperature isomerization catalyst
Temperature cycle chloridization process.
Background technology
The chloridization process of usual low temperature isomerization catalyst, takes and is continuously passed through carrier gas into system, and past carrier gas system
It after interruption adds anhydrous Aluminum chloride and is allowed to vaporization, is reacted with material, tail gas discharges absorption after passing through reactor.This chlorine
Chemical industry skill haves the shortcomings that carrier gas gas consumption is big, thermal losses is high, aluminium chloride utilization rate is low, so as to cause operating cost height.
Invention content
To solve the above-mentioned problems, the present invention proposes a kind of high temperature circulation chloridization process of low temperature isomerization catalyst,
Ingenious in design, perfect technology is easy to use.
Technical scheme of the present invention：
The high temperature circulation chloridization process of low temperature isomerization catalyst, is as follows：
1）Catalyst packing enters in reactor, carries out nitrogen displacement to system, catches up with except the residual oxygen in system.
2）Later, hydrogen compressor makes system airflow recycle, and opens heater and heated to air-flow, the material in reactor
45 DEG C or more are heated under the action of thermal current.
3）It is passed through hydrogen again, so that hydrogen content is not less than 20%, catalyst is restored under hydrogen effect, completes reduction
Process；In reduction process, circulating air, which flows away, restores line.
4）After the completion of reducing process, system circulation autogenous cutting changes chlorination line into, stops hydrogen compressor, starts high temperature circulation blower fan and carries out
Cycle.
5）Primary carburetor uniformly conveys anhydrous Aluminum chloride into system, and the vaporization that distils in vaporizer.
6）Anhydrous Aluminum chloride gas after vaporization is brought by circulating air in reactor, is reacted with high-temperature material, to make to urge
Agent obtains depth chlorination.
The high temperature circulation chloridization process of low temperature isomerization catalyst is urged using a kind of reduction and the integrated device of chlorination
After agent completes reducing process in a device, it is converted into high temperature circulation system, carrier gas is always under the temperature condition more than 200 DEG C
During which cycle uses dosing vaporizer to supplement anhydrous Aluminum chloride to system continuous uniform, make material and the chlorine in circulating air
Change aluminium and chlorination reaction fully occurs；After reaction, circulating air is emptied, and carries out absorption processing.
After the reduction process, system is recycled from low-temperature reduction cyclic switching at high-temp chlorination, cyclic process system
System circulating air remains 200 DEG C or more, and aluminium chloride is made to remain vapor state.
During the high temperature circulation, continuous uniform conveys anhydrous Aluminum chloride into system, and is vaporized, and makes material
Chlorination reaction uniformly occurs.
In the reaction process, system circulation gas reduces gas consumption without discharge.
It is an advantage of the invention that ingenious in design, perfect technology, easy to use, carrier gas gas consumption is small, thermal losses is low, chlorination
Aluminium utilization rate is high, and operating cost is low.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Specific implementation mode
The high temperature circulation chloridization process of low temperature isomerization catalyst is urged using a kind of reduction and the integrated device of chlorination
After agent completes reducing process in a device, it is converted into high temperature circulation system, carrier gas is always under the temperature condition more than 200 DEG C
During which cycle uses dosing vaporizer to supplement anhydrous Aluminum chloride to system continuous uniform, make material and the chlorine in circulating air
Change aluminium and chlorination reaction fully occurs；After reaction, circulating air is emptied, and carries out absorption processing.The reduction process terminates
Afterwards, system is recycled from low-temperature reduction cyclic switching at high-temp chlorination, and cyclic process system circulation gas remains 200 DEG C or more,
Aluminium chloride is set to remain vapor state.During the high temperature circulation, continuous uniform conveys anhydrous Aluminum chloride into system,
And be vaporized, make material that chlorination reaction uniformly occur.In the reaction process, system circulation gas is reduced without discharge
Gas consumption；It is discharged and is replaced after reaction.
With reference to attached drawing 1, a kind of low temperature isomerization catalyst reduction, chlorination integrated apparatus, it includes reactor 1, heating
Device 2, vaporizer 3, high temperature circulation blower fan 4, hydrogen compressor 5, cooler 6, tail gas absorber 7, heat exchanger 8, gas monitor 9, instead
Answer 1 upper end import of device by 2 one side outlet of piping connection heater, the outlet of 1 lower end of reactor passes through piping connection heat exchanger 8
Right end import, 2 another side-entrance of heater connect the outlet of 3 one end of vaporizer, and 3 other end import of vaporizer connects heat exchanger 8
Gas monitor 9 is also connected on upper end outlet and the export pipeline, 8 lower end import of heat exchanger is separately connected high temperature by pipeline and follows
The outlet of ring wind turbine 4 and hydrogen compressor 5, the lower end outlet of the input end connection cooler 6 of hydrogen compressor 5, the upper end import of cooler 6
The left end export pipeline of heat exchanger 8 is connected, the import of high temperature circulation blower fan 4 also connects the left end export pipeline of heat exchanger 8, exchanges heat
It is also connected with tail gas absorber 7 on the left end export pipeline of device 8.
The high temperature circulation blower fan 4 and 8 lower end connecting line of heat exchanger are chlorination spool roads 10.
The hydrogen compressor 5 is reduction spool road 11 with 8 lower end connecting line of heat exchanger.
The vaporizer 3 is rotation dosing vaporizer.
The gas monitor 9 is aluminium chloride and hydrogen chloride rapid detection system in gas, is judged in system circulation gas
The content of aluminium chloride and hydrogen chloride.
The tail gas absorber 7 in system circulation gas aluminium chloride and hydrogen chloride carry out absorption processing.
The nitrogen higher than 200 DEG C or more is formed between the high temperature circulation blower fan 4, hydrogen compressor 5, cooler 6, heat exchanger 8
Gas and hydrogen mixer high temperature circulation system；After reduction process, system is followed from low-temperature reduction cyclic switching at high-temp chlorination
Ring makes aluminium chloride remain vapor state；During high temperature circulation, continuous uniform conveys aluminium chloride into system, and carries out
Vaporization.
Technique according to the present invention, including catalyst reduction technique and depth chloridization process.Catalyst packing enters reaction
In device, nitrogen displacement is carried out to system, is caught up with except the residual oxygen in system.Later, hydrogen compressor makes system airflow recycle, and
It opens heater to heat air-flow, the material in reactor is heated to 45 DEG C or more under the action of thermal current；It is passed through hydrogen again,
Hydrogen content is set to be not less than 20%, catalyst is restored under hydrogen effect, completes reduction process.In reduction process, circulating air
Flow away reduction line.
After the completion of reducing process, system circulation autogenous cutting changes chlorination line into, stops hydrogen compressor, starts high temperature circulation blower fan and is followed
Ring.Primary carburetor uniformly conveys anhydrous Aluminum chloride into system, and the vaporization that distils in vaporizer.Anhydrous chlorine after vaporization
Change aluminium gas to be brought into reactor by circulating air, be reacted with high-temperature material, to make catalyst obtain depth chlorination.
Claims (4)
1. the high temperature circulation chloridization process of low temperature isomerization catalyst, which is characterized in that be as follows：
1）Catalyst packing enters in reactor, carries out nitrogen displacement to system, catches up with except the residual oxygen in system；
2）Later, hydrogen compressor makes system airflow recycle, and opens heater and heated to air-flow, and the material in reactor is in warm
45 DEG C or more are heated under the action of air-flow；
3）It is passed through hydrogen again, so that hydrogen content is not less than 20%, catalyst is restored under hydrogen effect, completes reduction process；
In reduction process, circulating air, which flows away, restores line；
4）After the completion of reducing process, system circulation autogenous cutting changes chlorination line into, stops hydrogen compressor, starts high temperature circulation blower fan and is followed
Ring；
5）Primary carburetor uniformly conveys anhydrous Aluminum chloride into system, and the vaporization that distils in vaporizer；
6）Anhydrous Aluminum chloride gas after vaporization is brought by circulating air in reactor, is reacted with high-temperature material, to make catalyst
Obtain depth chlorination.
2. the high temperature circulation chloridization process of low temperature isomerization catalyst according to claim 1, it is characterized in that described goes back
After former process, system is recycled from low-temperature reduction cyclic switching at high-temp chlorination, and cyclic process system circulation gas remains
200 DEG C or more, aluminium chloride is made to remain vapor state.
3. the high temperature circulation chloridization process of low temperature isomerization catalyst according to claim 1, it is characterized in that the height
In warm cyclic process, continuous uniform conveys anhydrous Aluminum chloride into system, and is vaporized, and makes material that chlorination uniformly occur anti-
It answers.
4. the high temperature circulation chloridization process of low temperature isomerization catalyst according to claim 1, it is characterized in that described is anti-
During answering, system circulation gas reduces gas consumption without discharge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710473875.7A CN107115894A (en) | 2017-06-21 | 2017-06-21 | The high temperature circulation chloridization process of low temperature isomerization catalyst |
| CN2017104738757 | 2017-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108499615A true CN108499615A (en) | 2018-09-07 |
Family
ID=59719340
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710473875.7A Withdrawn CN107115894A (en) | 2017-06-21 | 2017-06-21 | The high temperature circulation chloridization process of low temperature isomerization catalyst |
| CN201810330165.3A Pending CN108499615A (en) | 2017-06-21 | 2018-04-13 | The high temperature circulation chloridization process of low temperature isomerization catalyst |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710473875.7A Withdrawn CN107115894A (en) | 2017-06-21 | 2017-06-21 | The high temperature circulation chloridization process of low temperature isomerization catalyst |
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| Country | Link |
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| CN (2) | CN107115894A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3182013A (en) * | 1962-03-05 | 1965-05-04 | Phillips Petroleum Co | Activation of isomerization and hydrocracking catalysts |
| US3218267A (en) * | 1962-06-26 | 1965-11-16 | British Petroleum Co | Preparation of catalyst by treatment of alumina with thionyl chloride |
| US5463166A (en) * | 1994-05-27 | 1995-10-31 | Phillips Petroleum Company | Reactivation of alkane isomerization catalysts |
| CN102294274A (en) * | 2010-06-22 | 2011-12-28 | 南通扬子催化剂有限公司 | Continuous production technology for chloridizing and reducing heavy metal catalyst |
| CN102728352A (en) * | 2005-07-27 | 2012-10-17 | 切夫里昂菲利普化学有限责任公司 | Selective hydrogenation catalyst and methods of making and using same |
| CN104117369A (en) * | 2014-06-26 | 2014-10-29 | 江苏扬子催化剂有限公司 | Normal-paraffin isomerization catalyst, preparation method and application thereof |
| CN105080578A (en) * | 2015-08-14 | 2015-11-25 | 北京赛诺时飞石化科技有限公司 | N-alkane low-temperature isomerization catalyst as well as preparation method and application thereof |
-
2017
- 2017-06-21 CN CN201710473875.7A patent/CN107115894A/en not_active Withdrawn
-
2018
- 2018-04-13 CN CN201810330165.3A patent/CN108499615A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3182013A (en) * | 1962-03-05 | 1965-05-04 | Phillips Petroleum Co | Activation of isomerization and hydrocracking catalysts |
| US3218267A (en) * | 1962-06-26 | 1965-11-16 | British Petroleum Co | Preparation of catalyst by treatment of alumina with thionyl chloride |
| US5463166A (en) * | 1994-05-27 | 1995-10-31 | Phillips Petroleum Company | Reactivation of alkane isomerization catalysts |
| CN102728352A (en) * | 2005-07-27 | 2012-10-17 | 切夫里昂菲利普化学有限责任公司 | Selective hydrogenation catalyst and methods of making and using same |
| CN102294274A (en) * | 2010-06-22 | 2011-12-28 | 南通扬子催化剂有限公司 | Continuous production technology for chloridizing and reducing heavy metal catalyst |
| CN104117369A (en) * | 2014-06-26 | 2014-10-29 | 江苏扬子催化剂有限公司 | Normal-paraffin isomerization catalyst, preparation method and application thereof |
| CN105080578A (en) * | 2015-08-14 | 2015-11-25 | 北京赛诺时飞石化科技有限公司 | N-alkane low-temperature isomerization catalyst as well as preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 赵云发主编: "《化工设计学》", 31 January 2014 * |
| 韩松等: "C5/C6烷烃低温异构化催化剂及工艺研究", 《石油炼制与化工》 * |
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| Publication number | Publication date |
|---|---|
| CN107115894A (en) | 2017-09-01 |
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Application publication date: 20180907 |
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