CN107537407B - Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same - Google Patents
Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same Download PDFInfo
- Publication number
- CN107537407B CN107537407B CN201710894317.8A CN201710894317A CN107537407B CN 107537407 B CN107537407 B CN 107537407B CN 201710894317 A CN201710894317 A CN 201710894317A CN 107537407 B CN107537407 B CN 107537407B
- Authority
- CN
- China
- Prior art keywords
- reactor
- return pipe
- catalyst
- tank
- ethanol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000003054 catalyst Substances 0.000 claims abstract description 63
- 238000005070 sampling Methods 0.000 claims abstract description 52
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000005406 washing Methods 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000003085 diluting agent Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010924 continuous production Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- SYECJBOWSGTPLU-UHFFFAOYSA-N hexane-1,1-diamine Chemical compound CCCCCC(N)N SYECJBOWSGTPLU-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The adiponitrile hydrogenation reaction system and the method for treating the heavy blockage of the reactor by using the same are characterized in that an additional pipeline A and an additional pipeline B are additionally arranged on the basis of the conventional production system, so that the communication of connecting pipelines among a reactor feed pump standby platform, a reactor sampling tank and a return pipe can be realized when the return pipe is blocked by treatment through the opening and closing of a hand valve; the method utilizes ethanol continuously fed into the return pipe as a pressure source to form pressure in the blocked return pipe, after the ethanol is continuously fed for a certain time, the hand valve B is quickly opened to enable the pressure in the return pipe to be downwards poured in a moment and to be flushed towards the blockage, and after the operation is repeated for a plurality of times, the small-particle catalyst which is heavily blocked in the return pipe is flushed away, so that the conduction of the return pipe is realized. The system and the method of the invention solve the problem of severe blockage of the return pipe of the reactor in the non-stop state in the hydrogenation production of adiponitrile, keep the continuous production, indirectly reduce the cost and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of hexamethylene diamine production through adiponitrile hydrogenation reaction, in particular to an adiponitrile hydrogenation reaction system and a method for treating severe blockage of a reactor by using the same.
Background
The existing return pipe of the adiponitrile hydrogenation reactor is often blocked due to unsmooth flow of the catalyst, and great pressure is brought to the daily operation of the adiponitrile hydrogenation reaction. The main reasons for reactor plugging are the decrease in catalyst particle size, the increase in viscosity, the deterioration in flow properties, and the build-up and accumulation of catalyst in the decanter. Once the reactor is blocked, the untimely treatment can seriously affect the daily operation of the adiponitrile hydrogenation reaction, the tower flooding of the hydrogen washing tower and other accidents. Characteristics of adiponitrile hydrogenation reactor: the method is characterized in that hydrogen is flammable and explosive, the pressure is high, the catalyst is easy to nature and cannot meet oxygen, once a return pipe in a reactor is blocked, the return pipe cannot be diluted by using the existing equipment due to long and thin pipelines, the existing method for treating the blockage of the return pipe of the adiponitrile hydrogenation reactor is simpler, the reaction is only stopped during severe blockage, the treatment blocking time is long, most of the catalyst is accumulated in a decanter, the normal operation of the adiponitrile hydrogenation reaction is influenced, and the hexamethylene diamine impurity generated by the adiponitrile hydrogenation reaction is increased during the blockage time.
Disclosure of Invention
In order to solve the problem of severe blockage of a return pipe in a reactor in the process of adiponitrile hydrogenation reaction, the invention discloses an adiponitrile hydrogenation reaction system, which is characterized in that compared with the prior art, an additional pipeline A and an additional pipeline B are added, so that the problem of severe blockage of the return pipe can be solved by using the system under the condition of no-stop reaction;
the invention also discloses a method for treating the severe blockage of the reactor, aiming at solving the problem of severe blockage of a return pipe in the reactor in the process of adiponitrile hydrogenation reaction.
Therefore, the technical scheme adopted by the invention aiming at the problems is as follows: the adiponitrile hydrogenation reaction system comprises a hydrogen reactor feeding tank, a reactor feeding pump standby platform, a reactor sampling tank, a catalyst discharging tank and a catalyst washing tank, wherein a decanter is arranged in the reactor, the bottom of the decanter is connected with a return pipe, one end of the reactor feeding pump and the reactor feeding pump standby platform are connected with the hydrogen reactor feeding tank after being connected in parallel, the other end of the reactor feeding pump and the reactor sampling tank are communicated with the reactor, one side of the decanter is communicated with the catalyst discharging tank through a connecting pipeline, the bottom of the catalyst discharging tank is communicated with the catalyst washing tank through a connecting pipeline, the catalyst washing tank is connected to the hydrogen reactor feeding tank through a connecting pipeline to realize the bad use of the catalyst, and the top of the reactor sampling tank is communicated with the return pipe through a connecting pipeline; the system is also provided with an ethanol feeding pump, the outlet of the ethanol feeding pump is connected to the inlet of the reactor feeding pump standby platform through an additional pipeline A, and an additional pipeline B is also arranged between the outlet of the reactor feeding pump standby platform and a discharge pipeline at the bottom of the reactor sampling tank.
In the invention, a hand valve A is arranged on a connecting pipeline between an outlet of the reactor feeding pump standby platform and the reactor.
In the invention, the tail end of a discharge pipeline at the bottom of the sampling tank of the reactor is provided with a sampling valve.
In the invention, a hand valve B for connecting the return pipe and the reactor is arranged between the return pipe and the reactor.
In the invention, a sampling root valve is arranged on a connecting pipeline between the top of the reactor sampling tank and the return pipe.
A method for treating reactor severity blockages using an adiponitrile hydrogenation reaction system comprising the steps of:
1) firstly, closing a hand valve A and a sampling valve, and opening a sampling root valve to communicate connecting pipelines among a reactor feed pump standby platform, a reactor sampling tank and a return pipe;
2) starting an ethanol feeding pump and a reactor feeding pump standby platform, controlling the reactor feeding pump standby platform to feed ethanol serving as a diluent into a return pipe and a decanter through a reactor sampling tank under the conditions of 30-60% of load and 2.7-4.2MPa of outlet pressure;
3) opening the hand valve B, flushing the space between the return pipe and the reactor for 5-10min by using ethanol as diluent, then closing the hand valve B, and continuously feeding ethanol into the return pipe and the decanter to form pressure in the return pipe and the decanter by the continuously poured ethanol;
4) after the ethanol is continuously fed for 3-5min, quickly opening a hand valve B, and simultaneously increasing the catalyst discharge amount of a decanter to a catalyst washing tank;
5) repeating the steps 3) and 4) for 5-7 times, and when the temperature of the wall of the return pipe is increased from 40-50 ℃ to about 70 ℃, the reactor is opened.
Preferably, in the step 5), when the temperature of the wall of the return pipe is raised to about 70 ℃, the catalyst remained in the return pipe is sampled by a reactor sampling tank, and if the particle size of the catalyst is not less than 600mm, the reactor is opened; if the particle size of the catalyst is smaller than 600mm, repeating the steps 3) and 4) until the particle size of the catalyst is not smaller than 600 mm.
In the invention, in the operation process from step 1) to step 5), the reactor feed pump is always in an open state, so as to ensure the normal operation of the adiponitrile hydrogenation reaction.
Compared with the prior art, the invention has the following beneficial effects:
compared with the prior art, the system is additionally provided with the additional pipeline A and the additional pipeline B according to the field production condition, so that the communication of the connecting pipelines among the reactor feeding pump standby platform, the reactor sampling tank and the return pipe can be realized when the blockage of the return pipe is treated through the opening and closing of the hand valve, and the hardware condition is provided for the ethanol 'flushing' of the return pipe to solve the blockage.
In addition, in the present invention, the clogging of the reactor is substantially concentrated on a part of the piping leading to the inside of the reactor on the return pipe, and since the catalyst which becomes small in size after the reaction flows into the reactor through the return pipe, the fine catalyst is easily clogged at the bottom piping of the return pipe.
In order to solve the situation, in the method, firstly, the blocked return pipe is flushed by ethanol, the ethanol exists as diluent at the moment, the catalyst in the heavily blocked return pipe plays a role in diluting, then, after the hand valve B is closed, the ethanol which is continuously fed into the return pipe is used as a pressure source to form pressure in the blocked return pipe, after the hand valve B is continuously fed for a certain time, the hand valve B is quickly opened to ensure that the pressure in the return pipe is downwards poured at one moment to flush the blockage, and after the operation is repeated for a plurality of times, the small-particle catalyst which is heavily blocked in the return pipe is flushed away to realize the conduction of the return pipe, and in the process, a pipeline where a reactor feed pump is located is always in a normal reaction production state, so that the problem of the severe blockage of the reactor return pipe is solved under the non-stop state in the hexanedinitrile hydrogenation reaction for producing hexanediamine, and the continuous production is kept, indirectly reduces the cost and improves the production efficiency.
Drawings
FIG. 1 is a process flow diagram of the system of the present invention;
the labels in the figure are: 1. a hydrogen reactor feeding tank, 2, a reactor feeding pump, 3, a reactor feeding pump standby platform, 301, hand valves A, 4, a reactor, 401, a decanter, 402, a return pipe, 403, hand valves B, 5, a reactor sampling tank, 501, a sampling valve, 502, a sampling root valve, 6, a catalyst discharge tank, 7, a catalyst washing tank, 8, an ethanol feeding pump, 9, additional pipelines A, 10 and an additional pipeline B.
Detailed Description
The present invention is described in detail with reference to the following embodiments, which are provided in the present invention as a premise of the technical solution of the present invention, and the detailed implementation manner and the specific operation process are provided in the present embodiment.
As shown in FIG. 1, the invention provides an adiponitrile hydrogenation reaction system, which comprises a hydrogen reactor feeding tank 1, a reactor feeding pump 2, a reactor feeding pump standby platform 3, a reactor 4, a reactor sampling tank 5, a catalyst discharge tank 6 and a catalyst washing tank 7, wherein a decanter 401 is arranged in the reactor 4, the bottom of the decanter 401 is connected with a return pipe 402, the reactor feeding pump 2 and the reactor feeding pump backup platform 3 are connected in parallel, one end of the reactor feeding pump backup platform is connected with the feeding tank 1 of the hydrogen reactor, the other end of the reactor feeding pump backup platform is communicated with the reactor 4, one side of the decanter 401 is communicated with a catalyst discharge tank 6 through a connecting pipeline, the bottom of the catalyst discharge tank 6 is communicated with a catalyst washing tank 7 through a connecting pipeline, the catalyst washing tank 7 is connected to the feeding tank 1 of the hydrogen reactor through a connecting pipeline to realize the circulation use of the catalyst, and the top of the sampling tank 5 of the reactor is communicated with the return pipe 402 through a connecting pipeline; the system is also provided with an ethanol feeding pump 8, the outlet of the ethanol feeding pump 8 is connected with the inlet of the reactor feeding pump standby platform 3 through an additional pipeline A9, and an additional pipeline B10 is also arranged between the outlet of the reactor feeding pump standby platform 3 and a discharge pipeline at the bottom of the reactor sampling tank 5.
The above is the basic embodiment of the present invention, and further improvements, optimizations or limitations can be made on the above.
In the present invention, a hand valve a301 is disposed on a connection pipeline between the outlet of the reactor feed pump stand 3 and the reactor 4.
In the invention, a sampling valve 501 is arranged at the tail end of a discharge pipeline at the bottom of the reactor sampling tank 5.
In the present invention, a hand valve B403 for connecting the return pipe 402 and the reactor 4 is provided between the return pipe 402 and the reactor 4.
In the present invention, a sampling root valve 502 is provided on a connection line between the top of the sampling tank 5 of the reactor and the return pipe 402.
Different examples of methods for dealing with reactor severity plugging using the adiponitrile hydrogenation reaction system described above are given below:
example 1
A method for treating reactor severity blockages using an adiponitrile hydrogenation reaction system comprising the steps of:
1) firstly, closing a hand valve A301 and a sampling valve 501, and opening a sampling root valve 502 to communicate connecting pipelines among a reactor feed pump standby platform 3, a reactor sampling tank 5 and a return pipe 402;
2) starting an ethanol feeding pump 8 and a reactor feeding pump backup stage 3, controlling the reactor feeding pump backup stage 3 to feed ethanol serving as a diluent into a return pipe 402 and a decanter 401 through a reactor sampling tank 5 at a load of 30% and an outlet pressure of 2.7 MPa;
3) opening the hand valve B403, flushing for 5min between the return pipe 402 and the reactor 4 by using ethanol as diluent, then closing the hand valve B403, and continuously feeding ethanol into the return pipe 402 and the decanter 401 to form pressure in the return pipe 402 and the decanter 401 by the ethanol which continuously gushes in;
4) after the ethanol is continuously fed for 3min, quickly opening a hand valve B403, and simultaneously increasing the catalyst discharge amount of the decanter 401 to the catalyst washing tank 7;
5) repeating the operation of the step 3 and the step 4 for 5 times, and when the temperature of the pipe wall of the return pipe 402 is increased from 40-50 ℃ to about 70 ℃, the reactor 4 is opened.
In the step 5, when the temperature of the pipe wall of the return pipe 402 is raised to about 70 ℃, the catalyst remained in the return pipe 402 is sampled by the reactor sampling tank 5, and if the particle size of the catalyst is not less than 600mm, the reactor 4 is opened; if the particle size of the catalyst is smaller than 600mm, repeating the steps 3 and 4 until the particle size of the catalyst is not smaller than 600 mm.
During the operation from step 1 to step 5, the reactor feed pump 2 is always in an open state to ensure the normal operation of the adiponitrile hydrogenation reaction.
Example 2
A method for treating reactor severity blockages using an adiponitrile hydrogenation reaction system comprising the steps of:
1) firstly, closing a hand valve A301 and a sampling valve 501, and opening a sampling root valve 502 to communicate connecting pipelines among a reactor feed pump standby platform 3, a reactor sampling tank 5 and a return pipe 402;
2) starting an ethanol feeding pump 8 and a reactor feeding pump backup stage 3, controlling the reactor feeding pump backup stage 3 to feed ethanol serving as a diluent into a return pipe 402 and a decanter 401 through a reactor sampling tank 5 at a load of 60% and an outlet pressure of 4.2 MPa;
3) opening the hand valve B403, flushing for 10min between the return pipe 402 and the reactor 4 by using ethanol as diluent, then closing the hand valve B403, and continuously feeding ethanol into the return pipe 402 and the decanter 401 to form pressure in the return pipe 402 and the decanter 401 by the ethanol which continuously gushes in;
4) after the ethanol is continuously fed for 5min, quickly opening a hand valve B403, and simultaneously increasing the catalyst discharge amount of the decanter 401 to the catalyst washing tank 7;
5) repeating the operation of the step 3 and the step 4 for 7 times, and when the temperature of the pipe wall of the return pipe 402 is increased from 40-50 ℃ to about 70 ℃, the reactor 4 is opened.
In the step 5, when the temperature of the pipe wall of the return pipe 402 is raised to about 70 ℃, the catalyst remained in the return pipe 402 is sampled by the reactor sampling tank 5, and if the particle size of the catalyst is not less than 600mm, the reactor 4 is opened; if the particle size of the catalyst is smaller than 600mm, repeating the steps 3 and 4 until the particle size of the catalyst is not smaller than 600 mm.
During the operation from step 1 to step 5, the reactor feed pump 2 is always in an open state to ensure the normal operation of the adiponitrile hydrogenation reaction.
Example 3
A method for treating reactor severity blockages using an adiponitrile hydrogenation reaction system comprising the steps of:
1) firstly, closing a hand valve A301 and a sampling valve 501, and opening a sampling root valve 502 to communicate connecting pipelines among a reactor feed pump standby platform 3, a reactor sampling tank 5 and a return pipe 402;
2) starting an ethanol feeding pump 8 and a reactor feeding pump backup stage 3, controlling the reactor feeding pump backup stage 3 to feed ethanol serving as a diluent into a return pipe 402 and a decanter 401 through a reactor sampling tank 5 at a load of 45% and an outlet pressure of 3.5 MPa;
3) opening the hand valve B403, flushing for 8min between the return pipe 402 and the reactor 4 by using ethanol as diluent, then closing the hand valve B403, and continuously feeding ethanol into the return pipe 402 and the decanter 401 to form pressure in the return pipe 402 and the decanter 401 by the ethanol which continuously gushes in;
4) after the ethanol is continuously fed for 4min, quickly opening a hand valve B403, and simultaneously increasing the catalyst discharge amount of the decanter 401 to the catalyst washing tank 7;
5) repeating the operation of the step 3 and the step 4 for 6 times, and when the temperature of the pipe wall of the return pipe 402 is increased from 40-50 ℃ to about 70 ℃, the reactor 4 is opened.
In the step 5, when the temperature of the pipe wall of the return pipe 402 is raised to about 70 ℃, the catalyst remained in the return pipe 402 is sampled by the reactor sampling tank 5, and if the particle size of the catalyst is not less than 600mm, the reactor 4 is opened; if the particle size of the catalyst is smaller than 600mm, repeating the steps 3 and 4 until the particle size of the catalyst is not smaller than 600 mm.
During the operation from step 1 to step 5, the reactor feed pump 2 is always in an open state to ensure the normal operation of the adiponitrile hydrogenation reaction.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited to the embodiments, and various changes and modifications can be made by one skilled in the art without departing from the scope of the invention.
Claims (3)
1. A method for treating reactor heavy blockage by using an adiponitrile hydrogenation reaction system is characterized by comprising a hydrogen reactor feeding tank (1), a reactor feeding pump (2), a reactor feeding pump standby platform (3), a reactor (4), a reactor sampling tank (5), a catalyst discharging tank (6) and a catalyst washing tank (7), wherein a decanter (401) is arranged in the reactor (4), the bottom of the decanter (401) is connected with a return pipe (402), one end of the reactor feeding pump (2) and one end of the reactor feeding pump standby platform (3) are connected with the hydrogen reactor feeding tank (1) in parallel, the other end of the reactor feeding pump (401) is communicated with the reactor (4), one side of the decanter (401) is communicated with the catalyst discharging tank (6) through a connecting pipeline, the bottom of the catalyst discharging tank (6) is communicated with the catalyst washing tank (7) through a connecting pipeline, the catalyst washing tank (7) is connected to the feeding tank (1) of the hydrogen reactor through a connecting pipeline so as to realize the circulation use of the catalyst, and the top of the sampling tank (5) of the reactor is communicated with the return pipe (402) through a connecting pipeline; an ethanol feeding pump (8) is further arranged in the system, the outlet of the ethanol feeding pump (8) is connected to the inlet of the reactor feeding pump standby platform (3) through an additional pipeline A (9), and an additional pipeline B (10) is further arranged between the outlet of the reactor feeding pump standby platform (3) and a discharge pipeline at the bottom of the reactor sampling tank (5); a hand valve A (301) is arranged on a connecting pipeline between the outlet of the reactor feed pump standby platform (3) and the reactor (4); a sampling valve (501) is arranged at the tail end of a discharge pipeline at the bottom of the reactor sampling tank (5); a hand valve B (403) used for connecting the return pipe (402) and the reactor (4) is arranged between the return pipe (402) and the reactor (4); a sampling root valve (502) is arranged on a connecting pipeline between the top of the reactor sampling tank (5) and the return pipe (402);
the specific treatment method comprises the following steps:
1) firstly, closing a hand valve A (301) and a sampling valve (501), and opening a sampling root valve (502) to communicate connecting pipelines among a reactor feed pump standby platform (3), a reactor sampling tank (5) and a return pipe (402);
2) starting an ethanol feeding pump (8) and a reactor feeding pump standby platform (3), and controlling the reactor feeding pump standby platform (3) to feed ethanol serving as a diluent into a return pipe (402) and a decanter (401) through a reactor sampling tank (5) with the load of 30-60% and the outlet pressure of 2.7-4.2 MPa;
3) opening a hand valve B (403), flushing for 5-10min between a return pipe (402) and the reactor (4) by using ethanol as diluent, then closing the hand valve B (403), and continuously feeding ethanol into the return pipe (402) and the decanter (401) to form pressure in the return pipe (402) and the decanter (401) by continuously flushing ethanol;
4) after the ethanol is continuously fed for 3-5min, quickly opening a hand valve B (403), and simultaneously increasing the catalyst discharge amount of a decanter (401) to a catalyst washing tank (7);
5) repeating the steps 3) and 4) for 5-7 times, and when the temperature of the wall of the return pipe (402) is increased from 40-50 ℃ to about 70 ℃, the reactor (4) is opened.
2. The method of treating reactor severity plugging using an adiponitrile hydrogenation reaction system as in claim 1 wherein: in the step 5), when the temperature of the wall of the return pipe (402) is raised to about 70 ℃, the catalyst remained in the return pipe (402) is sampled by the reactor sampling tank (5), and if the particle size of the catalyst is not less than 600mm, the reactor (4) is opened; if the particle size of the catalyst is smaller than 600mm, repeating the steps 3) and 4) until the particle size of the catalyst is not smaller than 600 mm.
3. The method of treating reactor severity plugging using an adiponitrile hydrogenation reaction system as in claim 1 wherein: in the operation process from step 1) to step 5), the reactor feed pump (2) is always in an open state to ensure the normal operation of the adiponitrile hydrogenation reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894317.8A CN107537407B (en) | 2017-09-28 | 2017-09-28 | Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894317.8A CN107537407B (en) | 2017-09-28 | 2017-09-28 | Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107537407A CN107537407A (en) | 2018-01-05 |
| CN107537407B true CN107537407B (en) | 2020-09-22 |
Family
ID=60963658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710894317.8A Active CN107537407B (en) | 2017-09-28 | 2017-09-28 | Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107537407B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109438256B (en) * | 2018-11-13 | 2024-12-10 | 中国化学赛鼎宁波工程有限公司 | A kind of production method and production system of hexamethylenediamine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003002246A1 (en) * | 2001-06-25 | 2003-01-09 | Institut Francais Du Petrole | DEVICE AND METHOD FOR OPTIMIZING THE CIRCULATION OF A SUSPENSION IN AN INSTALLATION COMPRISING A THREE-PHASE REACTOR |
| CN203803475U (en) * | 2014-04-28 | 2014-09-03 | 赵晓东 | Fluidized bed reactor |
| CN203803474U (en) * | 2014-04-28 | 2014-09-03 | 赵晓东 | Gas-liquid-solid three-phase fluidized bed reactor |
-
2017
- 2017-09-28 CN CN201710894317.8A patent/CN107537407B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003002246A1 (en) * | 2001-06-25 | 2003-01-09 | Institut Francais Du Petrole | DEVICE AND METHOD FOR OPTIMIZING THE CIRCULATION OF A SUSPENSION IN AN INSTALLATION COMPRISING A THREE-PHASE REACTOR |
| CN203803475U (en) * | 2014-04-28 | 2014-09-03 | 赵晓东 | Fluidized bed reactor |
| CN203803474U (en) * | 2014-04-28 | 2014-09-03 | 赵晓东 | Gas-liquid-solid three-phase fluidized bed reactor |
Non-Patent Citations (1)
| Title |
|---|
| 氢气质量对己二腈加氢反应影响及对策;辛素雅等;《内江科技》;20071231(第04期);第125页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107537407A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107537407B (en) | Adiponitrile hydrogenation reaction system and method for treating reactor heavy blockage by using same | |
| CN109138965B (en) | Slug flow trapping system and method based on low-pressure liquid storage | |
| CN106764434B (en) | A kind of novel nitrogen feed system | |
| CN105297829A (en) | Multi-path water supply system | |
| CN218833664U (en) | Adjusting device for bottom sand discharge of deep cone thickener | |
| CN111927409B (en) | Water drainage and gas production system and method for prolonging life cycle of gas well of gas field | |
| CN204224286U (en) | A kind of biochemical pond defoaming device | |
| CN210385329U (en) | Noncondensable gas recovery unit of C5 petroleum resin flash distillation system | |
| CN209308667U (en) | A kind of anti-locking apparatus of combined supercharging inter-well interference | |
| CN110373226B (en) | Device and method for preventing C6-C10 hydrocarbon components from coking in refined naphtha preparation process | |
| CN109437102B (en) | System and method for avoiding blockage of spray head of conversion quencher | |
| CN112555684B (en) | Improved KO liquid separating tank drainage system and method of compressor | |
| CN219317283U (en) | Propane dehydrogenation device reactor vacuum pumping system | |
| CN223282914U (en) | A catalyst extraction control system for a chemical plant | |
| CN219621057U (en) | Combined feeding device for sludge dewatering | |
| CN107368048B (en) | Design method of underground water supply pump station structure control system | |
| CN214663740U (en) | Temperature control system for wet solvent delivered outside underground tank | |
| CN215609564U (en) | System for back flush grain slag filter layer of gas-liquid two-phase flow | |
| CN220695847U (en) | Safe liquid discharge structure | |
| CN220419858U (en) | Control system for pressure of reforming generated oil buffer tank | |
| CN217179319U (en) | Steam condensate energy-saving device | |
| CN211228712U (en) | Fire-fighting water supply system for coke-oven plant production | |
| CN117367201A (en) | On-line switching system of spiral plate heat exchanger and operation method thereof | |
| KR100779308B1 (en) | How to improve productivity of low density polyethylene in tubular reactors | |
| CN223453734U (en) | A stripping tower system for improving methanol yield |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |