CN113926389A - Integrated closed recycling device and process for flammable solid catalyst - Google Patents
Integrated closed recycling device and process for flammable solid catalyst Download PDFInfo
- Publication number
- CN113926389A CN113926389A CN202111309995.6A CN202111309995A CN113926389A CN 113926389 A CN113926389 A CN 113926389A CN 202111309995 A CN202111309995 A CN 202111309995A CN 113926389 A CN113926389 A CN 113926389A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- water
- replacement
- barrel
- feeding tank
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention discloses an integrated closed recycling device and a process for a flammable solid catalyst, wherein the device comprises a closed material transferring module, a solvent replacing module, a recycling module and a catalyst using end; the closed material transferring module is connected with a catalyst inlet of the solvent replacement module through a pipeline, and is used for quantitatively providing a solid catalyst containing water to the solvent replacement module, and the solid catalyst is sealed in the water; the catalyst outlet of the solvent replacement module is connected with the catalyst using end, and the solvent replacement module replaces water into an organic solvent under the protection of inert gas; and a catalyst outlet at the catalyst using end is connected with a recycling module, and the recycling module is used for collecting the used solid catalyst and sealing the solid catalyst with water. The device provided by the invention ensures that the solid catalyst is under the protection of water seal or inert gas in the using process, effectively reduces the contact of the solid catalyst and air, and improves the safety and efficiency of the catalyst in the using process.
Description
Technical Field
The invention belongs to the technical field of fine chemical engineering safety, and particularly relates to an integrated closed recycling device and process for a flammable solid catalyst.
Background
The catalyst can change the chemical reaction rate of reactants in a chemical reaction without changing chemical equilibrium, and the mass and chemical properties of the catalyst are not changed before and after the chemical reaction. The chemical reaction carried out under the action of the catalyst is called catalytic reaction, and the catalyst can accelerate the chemical reaction rate and improve the production capacity; side reactions are inhibited, and the yield of the target product is improved; improving the operation condition, reducing the equipment cost and the like.
The solid catalyst is a common reaction catalyst, and is easy to separate from a product, so that the post-treatment process is simple; the catalyst can be recycled, and the dosage is controllable; relatively stable at room temperature, easy preservation and the like. The media such as metallic lithium, Raney nickel, palladium carbon and the like are all solid catalysts with excellent performance. However, these substances are active in nature and have the possibility of spontaneous combustion in air, so that they are generally kept in a water-sealed environment, and the actual reaction is often carried out in an organic solvent. Therefore, when the catalysts are used, flammable and explosive gases such as A and B are inevitably existed in the operation environment, the catalysts are flammable when meeting air, and the conditions that the catalysts spontaneously combust, ignite the surrounding flammable and explosive gases and cause explosion accidents are difficult to ensure in the process of taking out the catalysts from a water seal and putting the catalysts into a reaction system are not generated.
At present, the use of the flammable catalyst in air is mainly manual feeding, the probability of the spontaneous combustion of the catalyst is reduced by carefully transferring the materials in small batches, and the scale of damage possibly caused after the spontaneous combustion is careless is reduced. Therefore, the production efficiency is influenced, and the danger coefficient of the use of the solid catalyst is greatly increased. The filtration and recovery of the catalyst generally use equipment such as a candle filter, and open operation is needed when solid materials are unloaded; although the flexible connection can be used for isolating air, the dangerous case that the air mixed into the air to ignite the catalyst is caused by the fact that the flexible connection is scratched by the solid is more likely to occur, in order to prevent the catalyst from remaining, a large amount of water is needed to wash the filter, the collecting barrel may need to be replaced for multiple times in one-batch recovery, the labor intensity is improved, and the potential safety hazard is increased.
Along with the fact that flammable catalysts are applied more and more widely and the reaction scale is larger and larger when meeting air, the process method capable of rapidly and safely recycling and applying the catalysts is developed, and the process method not only has objective economic returns of improving production efficiency and the like, but also can effectively reduce accident occurrence probability and increase safety of the process.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an integrated closed recycling device and process for a flammable solid catalyst.
In order to achieve the purpose, the following technical scheme is provided:
an integrated closed recycling device for flammable solid catalyst comprises a closed material transferring module, a solvent replacement module, a recycling module and a catalyst using end; the closed material transferring module is connected with a catalyst inlet of the solvent replacement module through a pipeline, and is used for quantitatively providing a solid catalyst containing water to the solvent replacement module, and the solid catalyst is sealed in the water; the catalyst outlet of the solvent replacement module is connected with the catalyst using end, and the solvent replacement module replaces water into an organic solvent under the protection of inert gas; and a catalyst outlet at the catalyst using end is connected with a recycling module, and the recycling module is used for collecting the used solid catalyst and sealing the solid catalyst with water.
Furthermore, the closed material transferring module comprises an automatic water supplementing system and a catalyst discharging barrel, wherein the automatic water supplementing system penetrates through a sealing barrel cover above the catalyst discharging barrel and extends into the catalyst discharging barrel, the automatic water supplementing system measures the liquid level of water in the catalyst discharging barrel through a liquid level meter and automatically supplements the water so as to ensure that the water level of the catalyst discharging barrel exceeds that of the solid catalyst, and the water sealing effect is achieved.
Furthermore, an overflow port is formed in the side edge of the catalyst discharge barrel, and a filter screen is arranged at the overflow port.
Further, the solvent replacement module is including replacing feeding tank, inert gas replacement system and organic solvent entry, the solid catalyst entry of replacement feeding tank is connected with the discharge gate of catalyst blowing bucket below, inert gas replacement system is connected to the top of replacement feeding tank, inert gas replacement system is equipped with the multi-branch road, be used for letting in different inert gas respectively, the top of replacement feeding tank still is equipped with the organic solvent entry, the side and the bottom of replacement feeding tank are equipped with the delivery port, delivery port department is equipped with the filter screen, the filter screen of side is used for preventing the overflow, the filter screen of bottom is used for discharging the water of replacement feeding tank.
Furthermore, the catalyst using end comprises a reactor and a filter, the reactor is connected with a catalyst outlet at the bottom of the replacement feeding tank through a pipeline, the outlet of the reactor is connected with the filter, a washing water inlet is arranged on the filter, and the filter is connected with a recovery and reuse module.
Further, the recycling sleeve module comprises a catalyst recycling barrel and a U-shaped overflow pipe, a discharge port of the filter is connected with a sealing barrel cover above the catalyst recycling barrel through a pipeline, an overflow port is formed in the side edge of the catalyst recycling barrel, the overflow port is connected with the U-shaped overflow pipe, and a filter screen is arranged between the overflow port and the U-shaped overflow pipe.
Furthermore, on the connecting pipeline of the catalyst feeding barrel and the replacement feeding tank, on the pipeline of the organic solvent inlet, on the connecting pipeline of the inert gas replacement system and the replacement feeding tank, on the pipeline of the water outlet at the bottom of the replacement feeding tank, on the connecting pipeline of the replacement feeding tank and the reactor and on the pipeline of the filter and the catalyst recycling barrel are both provided with an on-off valve.
An integrated closed recycling process of flammable solid catalyst comprises the following steps:
1) the method comprises the following steps that solid catalyst is sealed in a catalyst discharging barrel in advance, after the catalyst discharging barrel is connected with a replacement feeding tank, an automatic water replenishing system is connected to the catalyst discharging barrel, an open-close valve on a connecting pipeline of the catalyst discharging barrel and the replacement feeding tank is in a closed state, the replacement feeding tank is vacuumized and air replenished for many times through an inert gas replacement system, the open-close valve is opened, the solid catalyst in the catalyst discharging barrel enters the replacement feeding tank along with water seal water, the liquid level of the catalyst discharging barrel is ensured to be always at a safe height under the protection of the automatic water replenishing system, air is completely isolated, and redundant water seal water is discharged from an overflow port on the side edge of the catalyst discharging barrel;
2) after the quantitative solid catalyst enters the replacement feeding tank, the feeding is cut off. Opening an opening and closing valve on a pipeline of a water outlet at the bottom of the replacement feeding tank under the protection of an inert gas replacement system, discharging water seal water, then closing the opening and closing valve, opening an opening and closing valve on an organic solvent inlet pipeline, and injecting an organic solvent to a required liquid level;
3) opening an opening and closing valve on a connecting pipeline of the replacement feeding tank and the reactor, feeding the solid catalyst into the reactor along with the organic solvent for reaction, and rinsing the replacement feeding tank for multiple times by adopting the organic solvent to ensure that no catalyst remains, and feeding the product obtained by filtering the product after the reaction into other processes;
4) washing water enters the filter through the washing water inlet so as to wash the filter for multiple times, the solid catalyst and the washing water enter the catalyst recycling barrel together, redundant washing water is discharged through the U-shaped overflow pipe, and the catalyst recycling barrel containing the recovered catalyst can directly enter the closed material transferring module again to be used as a catalyst discharging barrel.
Further, the solid catalyst is Raney nickel, palladium carbon, ruthenium/carbon, metallic lithium, cobalt, iron or zinc.
Furthermore, the gas for supplementing the gas in the inert gas replacement system is nitrogen, argon or helium, and the organic solvent is one or more of methanol, ethanol, acetone, ethyl acetate, acetonitrile and tetrahydrofuran.
The invention has the beneficial effects that: the automatic water replenishing system is arranged on the raw material barrel with a high danger coefficient, so that the possibility that the catalyst is contacted with air when the raw material barrel transfers the materials is effectively reduced, and the safety and the efficiency of the raw material transfer are greatly improved; by adopting the measure of replacing the water phase with the required solvent in the feeding tank under the working condition of inert gas protection, the way that air enters the feeding tank to ignite the catalyst during solvent replacement is effectively retarded, and the safety and the purity of solvent replacement are improved; the closed barrel covers are arranged on the catalyst feeding barrel and the catalyst recycling barrel, so that the hidden danger of fire and explosion caused by connection damage and air entering a system when flexible connection is used is eliminated, and the safety of the recycling process is ensured; the U-shaped overflow pipe is arranged at the proper height of the catalyst recycling barrel, so that the liquid level of the receiving tank is ensured not to overflow, the water consumption of the backflushing filter is not limited any more, the receiving tank does not need to be replaced frequently, the cleaning effect is ensured, the residue is eliminated, the recovery rate is increased, and the efficiency is not reduced; the device integration is realized by integrating a plurality of systems, and a standardized and modularized device and process for airtight feeding of flammable catalysts in the presence of air are provided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: a. a closed material transferring module; b. a solvent displacement module; c. a recycling and applying module; d. a catalyst use end; 1. an automatic water replenishing system; 2. a catalyst discharge barrel; 3. filtering with a screen; 4. replacing the feeding tank; 5. an inert gas displacement system; 6. an organic solvent inlet; 7. a reactor; 8. a filter; 9. a washing water inlet; 10. a U-shaped overflow pipe; 11. and a catalyst recycling barrel.
Detailed Description
The invention will be further described with reference to the drawings and examples in the following description, but the scope of the invention is not limited thereto.
As shown in fig. 1, an integrated closed recycling device for flammable solid catalyst comprises a closed material transferring module a, a solvent replacing module b, a recycling and applying module c and a catalyst using end d, wherein the closed material transferring module a comprises an automatic water replenishing system 1 and a catalyst discharging barrel 2, the lower end of the automatic water replenishing system 1 penetrates through a sealing barrel cover above the catalyst discharging barrel 2 and extends into the catalyst discharging barrel 2, the automatic water replenishing system 1 measures the liquid level of water in the catalyst discharging barrel 2 through a liquid level meter and automatically supplies water to ensure that the water level of the catalyst discharging barrel 2 exceeds the solid catalyst, so that a water sealing effect is achieved, the liquid level meter can be a radar liquid level meter or an ultrasonic liquid level meter, the liquid level can be measured without extending into the water, an overflow port is formed in the side edge of the catalyst discharging barrel 2, and a filter screen 3 is arranged at the overflow port; the solvent replacement module b comprises a replacement feeding tank 4, an inert gas replacement system 5 and an organic solvent inlet 6, wherein a solid catalyst inlet of the replacement feeding tank 4 is connected with a discharge port below the catalyst feeding barrel 2, a connected pipeline is provided with an on-off valve, the inert gas replacement system 5 is connected above the replacement feeding tank 4, the connected pipeline is provided with the on-off valve, the inert gas replacement system 5 is provided with a plurality of branches respectively used for introducing different inert gases, the organic solvent inlet 6 is also arranged above the replacement feeding tank 4, the connected pipeline is provided with the on-off valve, the side edge and the bottom of the replacement feeding tank 4 are provided with water outlets, the water outlet is provided with a filter screen 3, the filter screen 3 on the side edge is used for preventing overflow, and the filter screen 3 on the bottom is used for discharging water in the replacement feeding tank 4; an opening and closing valve is arranged on the pipeline of the water outlet at the bottom; the catalyst using end d comprises a reactor 7 and a filter 8, the reactor 7 is connected with a catalyst outlet at the bottom of the replacement feeding tank 4 through a pipeline, an opening and closing valve is arranged on the connecting pipeline, an outlet of the reactor 7 is connected with the filter 8, and a washing water inlet 9 is arranged on the filter 8; the recycling and applying module c comprises a catalyst recycling barrel 11 and a U-shaped overflow pipe 10, a discharge port of the filter 8 is connected with a sealing barrel cover above the catalyst recycling barrel 11 through a pipeline, an opening and closing valve is arranged on the connected pipeline, an overflow port is formed in the side edge of the catalyst recycling barrel 11 and connected with the U-shaped overflow pipe 10, and a filter screen 3 is arranged between the overflow port and the U-shaped overflow pipe 10.
1) The method comprises the steps that solid catalyst is sealed in a catalyst discharging barrel 2 in advance, after the catalyst discharging barrel 2 is connected with a replacement feeding tank 4, an automatic water replenishing system 1 is connected to the catalyst discharging barrel 2, an open-close valve on a connecting pipeline of the catalyst discharging barrel 2 and the replacement feeding tank 4 is in a closed state, the replacement feeding tank 4 is vacuumized and replenished with air for multiple times through an inert gas replacement system 5, the open-close valve is opened, the solid catalyst in the catalyst discharging barrel 2 enters the replacement feeding tank 4 along with water seal water, the liquid level of the catalyst discharging barrel 2 is ensured to be always at a safe height under the protection of the automatic water replenishing system 1, air is completely isolated, and excess water seal water is discharged from an overflow port on the side edge of the catalyst discharging barrel 2;
2) after the quantitative solid catalyst enters the replacement feeding tank 4, the feeding is cut off. Opening an on-off valve on a pipeline of a water outlet at the bottom of the replacement feeding tank 4 under the protection of an inert gas replacement system 5, discharging water seal water, then closing the on-off valve, opening an on-off valve on a pipeline of an organic solvent inlet 6, and injecting the organic solvent to a required liquid level;
3) opening an opening and closing valve on a connecting pipeline between the replacement feeding tank 4 and the reactor 7, feeding the solid catalyst into the reactor 7 along with the organic solvent for reaction, and rinsing the replacement feeding tank 4 by adopting the organic solvent for multiple times to ensure that no catalyst remains, and feeding a liquid phase obtained by filtering a product after the reaction into other working procedures;
5) washing water enters the filter 8 through the washing water inlet 9, so that the filter 8 is washed for multiple times, the solid catalyst and the washing water enter the catalyst recycling barrel 11 together, redundant washing water is discharged through the U-shaped overflow pipe 10, and the catalyst recycling barrel 11 containing the recovered catalyst can directly enter the closed material transferring module a again to be used as the catalyst discharging barrel 2.
Example 1
The device and the process are adopted to produce certain cardiovascular disease drugs, the used catalyst is palladium carbon, 2.5kg of the catalyst is put in at one time, the water-sealed catalyst discharge barrel 2 is connected with the automatic water replenishing system 1 and then is charged into the replacement feeding tank 4, water is replenished to ensure the liquid level in the catalyst discharge barrel 2, the inert gas for protection is nitrogen, and the organic solvent adopts methanol to replace water; quantitative palladium-carbon enters a replacement feeding tank 4, feeding is cut off, other reaction media such as p-hydroxyphenylacrylic acid, methanol and the like are added into a reactor 7, a water phase is discharged from the replacement feeding tank 4, quantitative methanol is added, a palladium-carbon catalyst is fed into the reactor 7 from the replacement feeding tank 4 for reaction, after the reaction is finished, a product is filtered, a liquid phase material enters the next working procedure, the palladium-carbon catalyst is washed by 800L of water to recover 2.26kg of the catalyst, and the recovery rate is 90.4%.
Example 2
The production method is adopted to produce certain diabetes drugs, the used catalyst is Raney nickel, 4.0kg of the catalyst is put in at one time, the water-sealed catalyst discharge barrel 2 is connected with the automatic water replenishing system 1, then the material is added to the replacement feeding tank 4, the water is replenished to ensure the liquid level in the catalyst discharge barrel 2, the inert gas for protection is nitrogen, and the organic solvent is ethanol, so that the water is replaced; feeding a certain amount of Raney nickel into a replacement feeding tank 4, cutting off feeding, adding other reaction media such as ethanol, ethanolamine, glucose and the like into a reactor 7, discharging a water phase from the replacement feeding tank 4, adding a certain amount of ethanol, feeding a Raney nickel catalyst into the reactor 7 from the replacement feeding tank 4 for reaction, filtering a product after the reaction is finished, feeding the liquid phase material into the next step, washing the Raney nickel catalyst with 1350L of water to recover 3.77kg of the catalyst, and recovering 94.3 percent of the catalyst.
Example 3
The method is adopted to carry out the reaction of synthesizing the sorbitol by the catalytic hydrogenation of the glucose, the used catalyst is ruthenium/carbon, 5.0kg of the catalyst is put in at one time, the water-sealed catalyst charging barrel 2 is connected with the automatic water replenishing system 1, and then the materials are charged into the replacement charging tank 4, the water is replenished at the same time to ensure the liquid level in the catalyst charging barrel 2, the inert gas for protection is nitrogen, and the reaction is carried out in the water phase without replacing other solvents; quantitative ruthenium/carbon enters a replacement feeding tank 4, feeding is cut off, other reaction media such as glucose aqueous solution and the like are added into a reactor 7, a ruthenium/carbon catalyst is fed into the reactor 7 for reaction by the replacement feeding tank 4, after the reaction is finished, a product is filtered, a liquid phase material enters the next step, the ruthenium/carbon catalyst is washed by 1500L water to recover 4.62kg of the catalyst, and the recovery rate is 92.4%.
Claims (10)
1. An integrated closed recycling device for flammable solid catalyst is characterized by comprising a closed material transferring module (a), a solvent replacing module (b), a recycling module (c) and a catalyst using end (d);
the closed material transferring module (a) is connected with a catalyst inlet of the solvent replacing module (b) through a pipeline, and is used for quantitatively providing a solid catalyst containing water to the solvent replacing module (b), and the solid catalyst is sealed in the water;
the catalyst outlet of the solvent replacement module (b) is connected with the catalyst using end (d), and the solvent replacement module (b) replaces water into an organic solvent under the protection of inert gas;
and a catalyst outlet of the catalyst using end (d) is connected with the recycling module (c), and the recycling module (c) is used for collecting the used solid catalyst and sealing the solid catalyst with water.
2. The integrated closed recycling device for flammable solid catalysts according to claim 1, wherein the closed material transferring module (a) comprises an automatic water replenishing system (1) and a catalyst emptying barrel (2), the automatic water replenishing system (1) penetrates through a sealing barrel cover above the catalyst emptying barrel (2) and extends into the catalyst emptying barrel (2), the automatic water replenishing system (1) measures the liquid level of water in the catalyst emptying barrel (2) through a liquid level meter and automatically replenishes water to ensure that the water level of the catalyst emptying barrel (2) exceeds the solid catalyst to achieve a water sealing effect.
3. The integrated closed recycling device of flammable solid catalyst according to claim 2, wherein the side of the catalyst charging bucket (2) is provided with an overflow port, and the overflow port is provided with a filter screen (3).
4. The integrated closed recycling device of inflammable solid catalyst according to claim 2, wherein the solvent replacement module (b) comprises a replacement feed tank (4), inert gas replacement system (5) and organic solvent entry (6), the solid catalyst entry of replacement feeding tank (4) is connected with the discharge gate of catalyst blowing bucket (2) below, inert gas replacement system (5) is connected to the top of replacement feeding tank (4), inert gas replacement system (5) are equipped with many branches, be used for letting in different inert gas respectively, the top of replacement feeding tank (4) still is equipped with organic solvent entry (6), the side and the bottom of replacement feeding tank (4) are equipped with the delivery port, delivery port department is equipped with filter screen (3), the filter screen (3) of side are used for preventing the overflow, the filter screen (3) of bottom are arranged in discharging the water of replacement feeding tank (4).
5. The integrated closed recycling device of flammable solid catalyst according to claim 4, wherein the catalyst using end (d) comprises a reactor (7) and a filter (8), the reactor (7) is connected with the catalyst outlet at the bottom of the replacement feeding tank (4) through a pipeline, the outlet of the reactor (7) is connected with the filter (8), the filter (8) is provided with a washing water inlet (9), and the filter (8) is connected with the recycling module (c).
6. The integrated closed recycling device for flammable solid catalysts according to claim 5, wherein the recycling module (c) comprises a catalyst recycling barrel (11) and a U-shaped overflow pipe (10), the discharge port of the filter (8) is connected with the sealing barrel cover above the catalyst recycling barrel (11) through a pipeline, the side of the catalyst recycling barrel (11) is provided with an overflow port, the overflow port is connected with the U-shaped overflow pipe (10), and a filter screen (3) is arranged between the overflow port and the U-shaped overflow pipe (10).
7. The integrated closed recycling device of flammable solid catalyst according to claim 6, wherein the open/close valves are disposed on the connecting pipeline between the catalyst feeding tank (2) and the replacement feeding tank (4), the pipeline between the organic solvent inlet (6), the connecting pipeline between the inert gas replacement system (5) and the replacement feeding tank (4), the pipeline of the water outlet at the bottom of the replacement feeding tank (4), the connecting pipeline between the replacement feeding tank (4) and the reactor (7), and the pipeline between the filter (8) and the catalyst recycling tank (11).
8. An integrated closed reuse process for combustible solid catalyst according to claim 7, characterized by comprising the following steps:
1) the method comprises the steps that solid catalysts are sealed in a catalyst discharging barrel (2) in water in advance, after the catalyst discharging barrel (2) is connected with a replacement feeding tank (4), an automatic water replenishing system (1) is connected to the catalyst discharging barrel (2), an open-close valve on a connecting pipeline of the catalyst discharging barrel (2) and the replacement feeding tank (4) is in a closed state, the replacement feeding tank (4) is vacuumized and air replenished for many times through an inert gas replacement system (5), the open-close valve is opened, the solid catalysts in the catalyst discharging barrel (2) enter the replacement feeding tank (4) along with water sealing water, the liquid level of the catalyst discharging barrel (2) is guaranteed to be always at a safe height under the protection of the automatic water replenishing system (1), air is completely isolated, and excess water sealing water is discharged from an overflow port on the side edge of the catalyst discharging barrel (2);
2) after a certain amount of solid catalyst enters a replacement feeding tank (4), cutting off feeding, opening an on-off valve on a pipeline of a water outlet at the bottom of the replacement feeding tank (4) under the protection of an inert gas replacement system (5), discharging water seal water, then closing the on-off valve, opening an on-off valve on a pipeline of an organic solvent inlet (6), and injecting an organic solvent to a required liquid level;
3) opening an opening and closing valve on a connecting pipeline of the replacement feeding tank (4) and the reactor (7), feeding the solid catalyst into the reactor (7) along with the organic solvent for reaction, rinsing the replacement feeding tank (4) for multiple times by adopting the organic solvent to ensure that no catalyst remains, and feeding a liquid phase obtained by filtering a product after the reaction is finished into other working procedures;
4) washing water enters the filter (8) through the washing water inlet (9) so as to wash the filter (8) for multiple times, the solid catalyst and the washing water enter the catalyst recycling barrel (11) together, redundant washing water is discharged through the U-shaped overflow pipe (10), and the catalyst recycling barrel (11) filled with the recovered catalyst can directly enter the closed material transferring module (a) again to be used as the catalyst discharging barrel (2).
9. The integrated closed recycling process of flammable solid catalysts according to claim 8, wherein the solid catalyst is raney nickel, palladium on carbon, ruthenium on carbon, metallic lithium, cobalt, iron or zinc.
10. The integrated closed recycling process of flammable solid catalyst according to claim 8, wherein the gas used for supplying gas in the inert gas replacement system (5) is nitrogen, argon or helium, and the organic solvent is one or more of methanol, ethanol, acetone, ethyl acetate, acetonitrile and tetrahydrofuran.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309995.6A CN113926389A (en) | 2021-11-08 | 2021-11-08 | Integrated closed recycling device and process for flammable solid catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309995.6A CN113926389A (en) | 2021-11-08 | 2021-11-08 | Integrated closed recycling device and process for flammable solid catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113926389A true CN113926389A (en) | 2022-01-14 |
Family
ID=79285743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111309995.6A Pending CN113926389A (en) | 2021-11-08 | 2021-11-08 | Integrated closed recycling device and process for flammable solid catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113926389A (en) |
-
2021
- 2021-11-08 CN CN202111309995.6A patent/CN113926389A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101906046B (en) | Method and device for producing o-phenylenediamine by continuous liquid phase hydrogenation | |
| CN106892410B (en) | Production method of insoluble sulfur | |
| CN106866429B (en) | The production of serialization catalytic hydrogenation and catalyst regeneration device and method | |
| EP3541742B1 (en) | Method for storing hydrogen gas, hydrogenation reactor, and transport container | |
| CN1919828B (en) | Hydrogenation of methylenedianiline | |
| CN216419323U (en) | Integrated closed recycling device for inflammable solid catalyst | |
| CN113926389A (en) | Integrated closed recycling device and process for flammable solid catalyst | |
| CN109453786B (en) | Catalyst for preparing 2, 3-dichloropyridine and preparation method and application thereof | |
| CN106946230B (en) | Continuous production method of insoluble sulfur | |
| CN202284988U (en) | Pressurized liquid sampling device | |
| CN113292467B (en) | Method for purifying vitamin A oil mother liquor by using alcohol-containing alkali liquor | |
| CN101798269A (en) | Preparation method for synthesizing 2,4-dichloroaniline from 2,4-dichloronitrobenzene | |
| CN210332612U (en) | Continuous solid-liquid reaction system for realizing waste gas recovery | |
| CN111112295B (en) | Pretreatment method and system for waste catalyst containing precious metal | |
| EP2551012A1 (en) | Continuous reaction system comprising subcritical or supercritical liquid as solvent and reactant as solid | |
| US9321646B2 (en) | Hydrogen sulfide gas production plant system and method for recovering and using hydrogen sulfide gas | |
| CN110003937A (en) | Boiling bed hydrogenation method | |
| AU2013210592B2 (en) | Hydrogen sulfide gas production plant and method for recovering and using waste hydrogen sulfide gas | |
| CN219185876U (en) | Incomplete recovery processing device of triethyl aluminum cauldron | |
| CN102731351B (en) | Preparation method for 1-methyl-5-[3-methyl-4-(4-trifluoromethylthio-phenoxy)-phenyl]-biuret, and application thereof | |
| CN205095750U (en) | Many functional response cauldron hydrogenation catalyst adds and replacement device | |
| CN204735198U (en) | Improve device of hydrogenation catalyst safety in utilization | |
| CN105817183A (en) | Method for replacing phosgene synthetic tower catalyst | |
| CN207313477U (en) | A kind of 1,6-HD production system | |
| CN215162275U (en) | A raffinate recovery system for ethylene carbonate device |
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 |