CN107519944B - Catalyst continuous production equipment and method - Google Patents
Catalyst continuous production equipment and method Download PDFInfo
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- CN107519944B CN107519944B CN201710795736.6A CN201710795736A CN107519944B CN 107519944 B CN107519944 B CN 107519944B CN 201710795736 A CN201710795736 A CN 201710795736A CN 107519944 B CN107519944 B CN 107519944B
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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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0205—Impregnation in several steps
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Abstract
The invention relates to a catalyst continuous production device and a catalyst continuous production method, wherein the device comprises a liquid preparation tank for preparing a solution, a dipping tank for dipping a catalyst, jackets respectively arranged in the liquid preparation tank and the dipping tank, and a heating device for heating a medium in the jackets, wherein a stirrer is arranged in the liquid preparation tank, a medium outlet of the jacket of the liquid preparation tank is connected with a medium inlet of the jacket of the dipping tank through a pipeline, a medium inlet of the jacket of the liquid preparation tank is connected with a medium outlet of the jacket of the dipping tank through a pipeline, and a pump and a valve are arranged on the pipeline, so that the medium in the jacket of the liquid preparation tank and the medium in the jacket of the dipping tank can be circulated, and the medium in the jacket of the liquid preparation tank can be circulated singly.
Description
Technical Field
The invention relates to a continuous production device and a continuous production method for a catalyst.
Background
The impregnation method is a method for manufacturing the catalyst by taking impregnation as a key step, and is also a method widely applied to the production of the catalyst at present. The impregnation method is generally to impregnate various carriers in a liquid containing active substances, after the impregnation is balanced, the residual liquid is removed, and the catalyst is prepared after the procedures of drying, roasting, activating and the like.
For a single catalyst impregnation unit, the lead preparation solution time is too long, including: 1. heating the medium in the jacket of the impregnation tank to the expected temperature by using an electric heating rod, wherein the convection heat transfer time is too long, the solution in the impregnation tank absorbs heat when dissolved, and the upper part and the lower part of the impregnation tank have a large temperature difference of 10-20 ℃, so that the whole device cannot quickly reach the expected temperature; 2. the heating device in the jacket is locally overheated, and the heating element is easy to damage; 3. the materials in the jacket can not be circulated, and the temperature difference between the upper part and the lower part is large, so that the impregnated materials are heated unevenly, and the production quality is influenced.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a catalyst continuous production apparatus, which includes a liquid preparation tank for preparing a solution, an impregnation tank for impregnating a catalyst, jackets respectively disposed in the liquid preparation tank and the impregnation tank, and a heating device for heating a medium in the jackets, wherein a stirrer is disposed in the liquid preparation tank, a medium outlet of the liquid preparation tank jacket is connected to a medium inlet of the impregnation tank jacket via a pipe, a medium inlet of the liquid preparation tank jacket is connected to a medium outlet of the impregnation tank jacket via a pipe, and a pump and a valve are disposed on the pipe, so that the medium in the liquid preparation tank jacket and the medium in the impregnation tank jacket can be circulated, and the medium in the liquid preparation tank jacket can be circulated in a single cycle.
Furthermore, the upper part of the impregnation tank is provided with a lifter for lifting and putting down the hanging basket in the catalyst impregnation process.
Further, a medium outlet of the liquid preparation tank jacket is connected to a medium inlet of the impregnation tank jacket through a pump, a first valve is arranged on a pipeline between the pump and the medium inlet of the impregnation tank jacket, a medium outlet of the impregnation tank jacket is connected to the medium inlet of the liquid preparation tank jacket, a second valve is arranged on a pipeline between the medium outlet of the impregnation tank jacket and the medium inlet of the liquid preparation tank jacket, a branch pipe is branched from the pipeline between the pump and the first valve and connected to a pipeline between the second valve and the medium inlet of the liquid preparation tank jacket, and a third valve is arranged on the branch pipe.
Further, the pump is a centrifugal pump that transfers liquid by centrifugal force generated when the impeller rotates.
Further, the heating device is an electric heating rod.
The method for producing the catalyst by using the device comprises the following steps:
in the initial stage of production, the electric heating rod is electrified and heated, and the temperature is set to the temperature required by production; when the electric heating rod is electrified for a period of time, the following operations are carried out:
(A) Closing the third valve, opening the first valve and the second valve, starting the centrifugal pump, and circulating media in the jacket of the impregnation tank and the jacket of the liquid preparation tank by using the centrifugal pump, so that the inside of the whole jacket is uniformly heated, the heating efficiency is improved, and the heating time is shortened;
(B) When the temperature in the jacket reaches the set temperature, the first valve and the second valve are closed, the third valve is opened, and the medium in the jacket of the liquid preparation tank is circulated singly, so that the temperature required by production of the liquid preparation tank is well kept, the metal salt in the liquid preparation tank is fully dissolved, and the production quality is ensured.
The invention has the advantages that:
the invention achieves the purpose of circulation in the jacket by connecting the jacket of the impregnation tank and the jacket of the liquid preparation tank with each other through a pipeline.
1. Each point in the impregnating tank jacket and the liquid preparation tank jacket is uniformly heated by a circulating device, and the temperature is kept consistent;
2. the material dissolving speed of the dissolving tank is accelerated, and the heating efficiency is improved;
3. the time for the impregnation tank to reach the preset production temperature is greatly shortened compared with the original time;
4. along with the consumption of the solution in the impregnation tank, the solution is reduced, and the solution at the same temperature can be supplemented in the impregnation tank, so that the concentration and the amount of the solution can not be reduced, and the product quality is ensured.
The invention can realize the following effects:
1. the heating time is greatly shortened, and the energy consumption is reduced (from 14 hours to 4 hours);
2. the solution at the top and the bottom of the impregnation tank has no temperature difference;
3. the internal circulation effect of the jacket is good, and the heating is uniform;
4. along with the consumption of the impregnation solution, the solution can be supplemented to the impregnation tank from the solution preparation tank in time, so that the concentration and the temperature of the solution in the impregnation tank are kept at the original level, and the product quality is ensured.
Drawings
FIG. 1 is a schematic view of the structure of a continuous production apparatus for a catalyst of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings, which however are given for illustrative purposes only and do not constitute any limitation of the invention.
As shown in figure 1, the catalyst continuous production equipment of the invention comprises a liquid preparation tank T1 for preparing solution, an impregnation tank T2 for impregnating catalyst, a jacket 1 respectively arranged in the liquid preparation tank T1 and the impregnation tank T2 and a heating device 2 for heating medium in the jacket 1, wherein a stirrer 8 is arranged in the liquid preparation tank T1, a medium outlet of the jacket of the liquid preparation tank is connected with a medium inlet of the jacket of the impregnation tank through a pipeline, a medium inlet of the jacket of the liquid preparation tank is connected with a medium outlet of the jacket of the impregnation tank through a pipeline, a pump 3 and valves (4, 5 and 7) are arranged on the pipeline, so that the medium in the jacket of the liquid preparation tank and the medium in the jacket of the impregnation tank can be circulated, and the medium in the jacket of the liquid preparation tank can be singly circulated.
The upper part of the impregnation tank T2 is further provided with a lifter 6 for lifting and putting down the hanging basket in the catalyst impregnation process.
In one embodiment, the medium outlet of the jacket of the dispensing tank T1 is connected to the medium inlet of the immersion tank T2 via a pump 3, a first valve 5 is provided on a pipe between the pump 3 and the medium inlet of the jacket of the immersion tank T2, the medium outlet of the jacket of the immersion tank T2 is connected to the medium inlet of the jacket of the dispensing tank T1, a second valve 7 is provided on a pipe between the medium outlet of the jacket of the immersion tank T2 and the medium inlet of the jacket of the dispensing tank T1, and a branch pipe, on which a third valve 4 is provided, is branched off from the pipe between the pump 3 and the first valve 5 and connected to the pipe between the second valve 7 and the medium inlet of the jacket of the dispensing tank T1.
The pump 3 may be a centrifugal pump that transfers liquid by centrifugal force generated when an impeller rotates.
The heating means 2 may be an electrical heating rod.
The process for producing the catalyst using the apparatus is as follows:
at the initial stage of production start, the electric heating rod 2 is electrified and heated, and the temperature is set to the temperature required by production; when the electric heating rod 2 is electrified for a period of time, the following operations are carried out:
(A) Closing the third valve 4, opening the first valve 5 and the second valve 7, starting the centrifugal pump 3, and circulating media in the impregnation tank jacket and the liquid preparation tank jacket by using the centrifugal pump 3, so that the inside of the whole jacket is uniformly heated, the heating efficiency is improved, and the heating time is shortened;
(B) When the temperature in the jacket reaches the set temperature, the first valve 5 and the second valve 7 are closed, the third valve 4 is opened, and the medium in the jacket of the liquid preparation tank is circulated singly, so that the temperature required by production of the liquid preparation tank is well kept, the metal salt in the liquid preparation tank is fully dissolved, and the production quality is ensured.
The invention solves the problems that the production efficiency is influenced due to long heating time, the production quality is influenced due to large temperature difference between the solution at the top and the bottom of the impregnation tank, the heating power consumption is large due to nonuniform heating in the jacket, and the like, and the solution at the same temperature can be timely supplemented when the solution in the impregnation tank is consumed.
Claims (5)
1. A catalyst continuous production device is characterized by comprising a liquid preparation tank for preparing a solution, a dipping tank for dipping a catalyst, jackets respectively arranged in the liquid preparation tank and the dipping tank, and a heating device for heating a medium in the jackets, wherein a stirrer is arranged in the liquid preparation tank;
the medium outlet of the liquid distribution tank jacket is connected with the medium inlet of the impregnation tank jacket through a pump, a first valve is arranged on a pipeline between the pump and the medium inlet of the impregnation tank jacket, the medium outlet of the impregnation tank jacket is connected with the medium inlet of the liquid distribution tank jacket, a second valve is arranged on a pipeline between the medium outlet of the impregnation tank jacket and the medium inlet of the liquid distribution tank jacket, a branch pipe is divided from the pipeline between the pump and the first valve and connected with the pipeline between the second valve and the medium inlet of the liquid distribution tank jacket, and a third valve is arranged on the branch pipe.
2. The continuous catalyst production equipment according to claim 1, wherein the upper part of the impregnation tank is provided with a lifter for lifting and lowering a basket in the catalyst impregnation process.
3. The continuous production apparatus of claim 1 or 2, wherein the pump is a centrifugal pump for transferring the liquid by a centrifugal force generated when the impeller rotates.
4. The continuous catalyst production apparatus according to claim 1 or 2, wherein the heating means is an electric heating rod.
5. A method for producing a catalyst using the catalyst continuous production apparatus of any one of claims 1 to 4, comprising the steps of:
at the initial stage of production start, the electric heating rod is electrified and heated, and the temperature is set to the temperature required by production;
closing the third valve, opening the first valve and the second valve, starting the centrifugal pump, and circulating media in the jacket of the impregnation tank and the jacket of the liquid preparation tank by using the centrifugal pump, so that the inside of the whole jacket is uniformly heated;
and when the temperature in the jacket reaches the set temperature, closing the first valve and the second valve, and opening the third valve to ensure that the medium in the jacket of the liquid preparation tank circulates singly, so that the liquid preparation tank keeps the temperature required by production, and the metal salt in the liquid preparation tank is fully dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795736.6A CN107519944B (en) | 2017-09-06 | 2017-09-06 | Catalyst continuous production equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710795736.6A CN107519944B (en) | 2017-09-06 | 2017-09-06 | Catalyst continuous production equipment and method |
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| Publication Number | Publication Date |
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| CN107519944A CN107519944A (en) | 2017-12-29 |
| CN107519944B true CN107519944B (en) | 2023-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710795736.6A Active CN107519944B (en) | 2017-09-06 | 2017-09-06 | Catalyst continuous production equipment and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110743627B (en) * | 2019-10-31 | 2024-04-26 | 新疆至臻化工工程研究中心有限公司 | Catalyst impregnating device and method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816944A (en) * | 2014-01-20 | 2014-05-28 | 云南契合投资有限公司 | Environment-friendly continuous production process for low-mercury catalyst and device thereof |
| CN104759254A (en) * | 2015-04-15 | 2015-07-08 | 南通职业大学 | Preparation method of chromium-loaded active carbon as well as condition and device of methylbenzene adsorption using chromium-loaded active carbon |
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2017
- 2017-09-06 CN CN201710795736.6A patent/CN107519944B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816944A (en) * | 2014-01-20 | 2014-05-28 | 云南契合投资有限公司 | Environment-friendly continuous production process for low-mercury catalyst and device thereof |
| CN104759254A (en) * | 2015-04-15 | 2015-07-08 | 南通职业大学 | Preparation method of chromium-loaded active carbon as well as condition and device of methylbenzene adsorption using chromium-loaded active carbon |
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| CN107519944A (en) | 2017-12-29 |
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