CN211329412U - Impregnation device for catalyst - Google Patents
Impregnation device for catalyst Download PDFInfo
- Publication number
- CN211329412U CN211329412U CN201921853161.XU CN201921853161U CN211329412U CN 211329412 U CN211329412 U CN 211329412U CN 201921853161 U CN201921853161 U CN 201921853161U CN 211329412 U CN211329412 U CN 211329412U
- Authority
- CN
- China
- Prior art keywords
- impregnation
- bed
- solution
- catalyst
- dipping
- 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
Images
Landscapes
- Catalysts (AREA)
Abstract
The utility model belongs to the field of chemical equipment for catalyst treatment, in particular to a catalyst dipping device, the dipping device comprises a dipping bed 5, a solution circulating unit and a vacuum unit 15, wherein the dipping bed 5 is a vertical unequal-diameter fixed bed with large upper end inner diameter, small lower end inner diameter and a steam jacket 6 on the outer wall, the upper part of the dipping bed 5 is connected with a catalyst carrier hopper 3, the bottom of the dipping bed 5 is connected with a tee joint 7, a blanking valve 10 is connected below the tee joint 7, and the tee joint 7 is connected with a filter screen 9 through a pipeline in the horizontal direction, the utility model utilizes the change of the airspeed of dipping solution in the unequal-diameter dipping bed to compensate the reduction of the concentration of the solution from top to bottom and increase the uniformity of catalyst dipping, simultaneously the utility model discloses a steeping device and flooding method have equipment and easy operation, and the flooding is even, and the carrier wearing and tearing are few in the production process, advantages such as flooding efficiency height.
Description
Technical Field
The utility model belongs to the technical field of chemical equipment, concretely relates to steeping device of catalyst.
Background
The impregnation operation of the catalyst, particularly the impregnation process of the solid particle catalyst, comprises the processes of carrier pretreatment, active component loading, drying and the like, wherein the process of loading the soluble component to the catalyst carrier is a key link. For example, catalysts with the same component formula, different impregnation devices and different impregnation methods have different structures and properties, and the reasons for the differences include nonuniform impregnation, nonuniform dispersion of active components, severe pulverization and breakage of catalyst carriers, and the like. Particularly, in the case of noble metal catalysts, since noble metals are expensive and are generally used in small amounts in catalysts, it is more necessary to ensure the uniformity of the noble metal components in the catalysts and to avoid pulverization and abrasion of the catalysts.
Chinese patent CN102806109A discloses a catalyst continuous impregnation device and a method, wherein the device comprises a carrier continuous feeding system, an impregnation liquid conveying system, an impregnation chamber, a conveying component, a dryer and a power system. The catalyst carrier falls from the hopper to the impregnation chamber, the catalyst carrier falls while being connected to a liquid conveying system of the impregnation chamber to spray liquid on the falling carrier, solid-liquid fully contacts and adsorbs in the falling process and then falls onto a conveying part, the solid-liquid is conveyed into a dryer through the conveying part, and hot air is introduced to the bottom of the dryer to dry the catalyst to obtain a catalyst product.
Chinese patent CN204208580U discloses a continuous carrier particle impregnation device, which comprises a solid-liquid mixer with a feed inlet and a discharge outlet, and an impregnation liquid supply system, wherein a conveyer extending from the feed product to the discharge outlet, one or more impregnation zones and one or more drying zones are arranged in the solid-liquid mixer, a drying zone is arranged between adjacent impregnation zones, and an electric heater is arranged in the drying zone. The equipment can ensure that carrier particles entering from the feeding hole can finish independent impregnation operation at least twice under the conveying of the conveying device, and is suitable for loading high-content and various components.
However, the catalyst carrier of the method disclosed in the prior art is in dynamic motion in the whole impregnation process, the abrasion and the breakage of particles in the process are uncontrollable, and the non-uniformity of the impregnation is a great difficulty in the impregnation process. The utility model provides a more convenient and reliable impregnating device and method, which has the characteristics of even impregnation, less abrasion and breakage of a catalyst carrier and the like.
Disclosure of Invention
The to-be-solved technical problem of the utility model is that catalyst has improved catalyst production efficiency at the flooding in-process flooding inhomogeneity, the serious scheduling problem of the broken pulverization of solid particle.
The utility model provides a pair of steeping device of catalyst, steeping device includes that steeping bed 5, liquid phase circulation unit and vacuum unit 15 couple in proper order with the pipeline, steeping bed 5 is the big vertical unequal diameter fixed bed that the lower extreme internal diameter is little of upper end internal diameter, and steeping bed 5 upper portion is connected with catalyst carrier hopper 3, and upper portion sets up solution distributor 4 in steeping bed 5, and steeping bed 5 bottom is connected with tee bend 7, and tee bend 7 below is connected with unloading valve 10, and tee bend 7's horizontal direction passes through pipe connection filter screen 9, the liquid phase circulation unit includes that solution tank 12, solution pump 1, solution distributor 4 couple in proper order with the pipeline, solution tank 12 top with, steeping bed 5 bottom and vacuum unit 15 are connected, and solution tank 12 bottom is connected with solution pump 1, and solution pump 1 export is connected with solution distributor 4; the vacuum unit 15 is connected to the upper part of the solution tank 12 to vacuumize the solution tank.
The impregnation bed 5 is a vertical fixed bed with a wide top and a narrow bottom and a jacket 6, wherein the jacket 6 is used for introducing steam or hot gas to dry the catalyst; the upper part of the dipping bed 5 is connected with a catalyst carrier hopper 3, the bottom of the dipping bed 5 is connected with a tee joint 7, the lower part of the tee joint 7 is connected with a blanking valve 10, a horizontal interface of the tee joint 7 is connected with a filter screen 9, and the filter screen 11 is used for preventing catalyst particles from being sucked into a solution tank 12.
As mentioned above, the dipping bed has larger caliber at the upper end and smaller caliber at the lower end, and smooth or corrugated inner wall, thus being convenient for catalyst blanking and dipping solution dispersion; in the dipping process, the solution is firstly connected with the catalyst at the upper end of the dipping bed, the concentration of the solution is higher at this time, and after the solution is adsorbed by the upper section catalyst carrier, the concentration of the dipping solution is reduced in the process that the solution moves downwards, so that the inner diameter of the dipping bed is reduced from top to bottom, the airspeed of the solution of the lower section catalyst carrier is increased, and the solution is used as compensation for the reduction of the concentration of the solution, so that the dipping is more uniform.
The liquid circulation unit as described above comprises a solution tank 12, a solution pump 1, a solution distributor 4 and a valve a2, valve c13 coupled in sequence, the solution distributor 4 being located above the impregnation bed 5 and extending into the impregnation bed 5 to prevent the solution from spraying out of the impregnation bed, but not to a depth exceeding the inlet of the catalyst carrier hopper at the impregnation bed. The solution tank 12 is connected with a filter screen 9 on a tee joint 7 at the bottom of the dipping bed 5 through a pipeline and a valve 2, the solution pump 1 is communicated with the bottom of the solution tank 12 and the solution distributor 4 through a pipeline and a valve 13, the solution tank 12 is positioned at the inlet end of the solution pump 1, and the solution distributor 4 is positioned at the outlet end of the solution pump 1. The solution distributor 4 is a round net structure, and the solution is uniformly sprayed on the catalyst carrier at the upper end of the impregnation bed after passing through the distributor.
The valve d16 for the air release valve is provided at the top of the solution tank 12 as described above.
The vacuum unit 15 is connected to the top of the solution tank 12 through a pipe and a blow valve 14 as described above, and the vacuum unit 15 may be a liquid ring type vacuum unit or a liquid jet type vacuum unit. If the solution in the solution tank has certain volatility or harmful gas is emitted, the circulating liquid in the vacuum unit can be changed into liquid capable of absorbing the harmful gas or volatile.
A valve e17 is provided between the upper part of the impregnation bed 5 and the catalyst carrier hopper 3 as described above; a valve b11 is arranged on a pipeline connecting the top of the solution tank 12 and the bottom of the impregnation bed 5; an emptying valve 14 is arranged on a pipeline which is connected with the vacuum unit 15 at the top of the solution tank 12; the pipe connected with the solution pump 1 at the bottom of the solution tank 12 is provided with a valve c 13; a valve a2 is arranged between the outlet of the solution pump 1 and the solution distributor 4.
The use process of the catalyst device comprises the following steps: adding a catalyst carrier 8 into an impregnation bed 5 through a catalyst carrier hopper 3 and a carrier blanking valve 17, opening a vacuum unit 15 and a solution pump 1, pumping a solution into a solution distributor 4 through the solution pump 1, uniformly spraying the solution through the solution distributor 4 to contact with the catalyst carrier 8, enabling the solution to quickly flow through the catalyst carrier 8 in the impregnation bed 5 under the action of the vacuum unit 15 to achieve the purpose of impregnation, circulating the rest solution from the impregnation bed 5 to the impregnation bed 5 through the solution pump 1 to perform circulating impregnation, closing the solution pump 1 and a valve a2 valve c13 after the impregnation is completed, introducing steam into an impregnation bed jacket 6 to pre-dry the catalyst in the impregnation bed 5, closing the vacuum unit 15 after the pre-drying is completed, opening a blanking valve 10 at the bottom of the impregnation bed 5 to perform blanking, and sending the catalyst to a subsequent working section.
A catalyst impregnation process as described above, said vacuum assembly having at least three functions: firstly, in the circulating impregnation process, the solution quickly passes through an impregnation bed by vacuumizing, so that the uniformity of catalyst impregnation is improved; secondly, in the process of introducing steam into the jacket for predrying after impregnation is finished, the vacuum unit is operated while the valve a2 and the valve c13 are closed, so that the air flux in the impregnation bed is increased, and the predrying process is accelerated; thirdly, when harmful gas is discharged from the dipping solution, the vacuum unit can perform harm-removing operation by replacing proper circulating liquid.
The utility model provides an impregnation method has solved the uneven problem of impregnating and broken wearing and tearing of catalyst of component on catalyst carrier. The advantages are that:
first, the present invention reduces the wear and tear on the catalyst support by making the catalyst support relatively static during the impregnation process.
Second, the utility model provides a dipping bed utilizes the change of dipping bed internal diameter, makes solution through catalyst carrier's airspeed top-down crescent, has compensated the dipping in-process solution concentration along with dipping bed axial top-down's reduction, has increased the homogeneity of catalyst flooding.
Third, the utility model provides an impregnation method adopts vacuum cycle flooding, makes solution in the dipping bed top-down contact with catalyst carrier fast, and solution dwell time in the dipping bed when having greatly reduced circulation each time has reduced the solution and has advanced, gone out the concentration gradient of dipping bed, has further increased the homogeneity of catalyst flooding.
Fourth, the utility model provides a dipping device simple structure, the flexible operation, the dipping method is simple and easy, the industrialization of being convenient for is used.
Drawings
Fig. 1 is a schematic view of the device of the present invention.
Reference numerals: 1. the device comprises a solution pump, 2 valves a, 3 catalyst carrier hoppers, 4 solution distributors, 5 impregnation beds, 6 jackets, 7 tee joints, 8 catalyst carriers, 9 filter screens, 10 blanking valves, 11 valves b, 12 solution tanks, 13 valves c, 14 emptying valves, 15 vacuum units, 16 valves d, 17 valves e.
Detailed Description
The following description will be made with reference to the drawings and reference numerals. It is to be understood that the following description and drawings are only illustrative and explanatory of the invention, and are not restrictive thereof.
Example 1: referring to the attached drawing 1 of the specification, the impregnation device adopted in the present case is composed of an impregnation bed 5, a solution circulation unit and a vacuum unit 15, firstly, a catalyst carrier 8 is added into the impregnation bed 5 through a catalyst carrier hopper 3 and a carrier blanking valve 17, the vacuum unit 15 and a solution pump 1 are opened, a solution is pumped into a solution distributor 4 through the solution pump 1, the solution is uniformly sprayed down to be in contact with the catalyst carrier 8 after passing through the solution distributor 4, the solution rapidly flows through the catalyst carrier 8 in the impregnation bed 5 under the action of the vacuum unit 15 to achieve the purpose of impregnation, and the inner wall of the impregnation bed is a smooth inner wall, so that the catalyst blanking is facilitated. And (3) circulating the residual solution from the impregnation bed 5 to the impregnation bed 5 by using the solution pump 1 for circulating impregnation, closing the solution pump 1 and the valve a2, valve c13 after the impregnation is finished, introducing steam into the impregnation bed jacket 6 to pre-dry the catalyst in the impregnation bed 5, closing the vacuum unit 15 after the pre-drying is finished, opening a feeding valve 10 at the bottom of the impregnation bed 5 for feeding, and sending to a subsequent drying section.
Example 2: referring to the attached drawing 1 of the specification, the impregnation device adopted in the present case is composed of an impregnation bed 5, a solution circulation unit and a vacuum unit 15, firstly, a catalyst carrier 8 is added into the impregnation bed 5 through a catalyst carrier hopper 3 and a carrier blanking valve 17, the vacuum unit 15 and a solution pump 1 are opened, a solution is pumped into a solution distributor 4 through the solution pump 1, the solution is uniformly sprayed down to be contacted with the catalyst carrier 8 after passing through the solution distributor 4, the solution rapidly flows through the catalyst carrier 8 in the impregnation bed 5 under the action of the vacuum unit 15 to achieve the purpose of impregnation, the inner wall of the impregnation bed is a corrugated inner wall, when the solution flows downwards, turbulence is generated under the disturbance of the corrugated inner wall, the back mixing effect of the solution is increased, and the uniformity of the impregnation is favorably increased. And (3) circulating the residual solution from the impregnation bed 5 to the impregnation bed 5 by using the solution pump 1 for circulating impregnation, closing the solution pump 1 and the valve a2, valve c13 after the impregnation is finished, introducing steam into the impregnation bed jacket 6 to pre-dry the catalyst in the impregnation bed 5, closing the vacuum unit 15 after the pre-drying is finished, opening a feeding valve 10 at the bottom of the impregnation bed 5 for feeding, and sending to a subsequent drying section.
It should be noted that the examples in this specification are only for further description of the disclosure, and are not intended to limit the disclosure.
Claims (6)
1. A catalyst impregnation device is characterized by comprising an impregnation bed (5), a liquid phase circulation unit and a vacuum unit (15) which are sequentially connected through a pipeline, wherein the impregnation bed (5) is a vertical unequal-diameter fixed bed with a large inner diameter at the upper end and a small inner diameter at the lower end, the upper part of the impregnation bed (5) is connected with a catalyst carrier hopper (3), a solution distributor (4) is arranged at the upper part in the impregnation bed (5), the bottom of the impregnation bed (5) is connected with a tee joint (7), a blanking valve (10) is connected below the tee joint (7), the tee joint (7) is connected with a filter screen (9) through a pipeline in the horizontal direction, the liquid phase circulation unit comprises a solution tank (12), a solution pump (1) and the solution distributor (4) which are sequentially connected through a pipeline, the top of the solution tank (12) is connected with the bottom of the impregnation bed (5) and the vacuum unit (15), the bottom of the solution tank (12, the outlet of the solution pump (1) is connected with a solution distributor (4); the vacuum unit (15) is connected to the upper part of the solution tank (12).
2. A catalyst impregnation apparatus as claimed in claim 1, wherein the outer wall of said impregnation bed (5) is further provided with a jacket (6).
3. An impregnation apparatus for a catalyst as claimed in claim 1, characterized in that the inner walls of said impregnation bed (5) are smooth or corrugated.
4. An impregnation apparatus for catalysts according to claim 1, characterized in that said vacuum unit (15) is a liquid ring vacuum unit or a liquid jet vacuum unit.
5. An impregnation apparatus for catalyst as claimed in claim 1, characterized in that a valve e (17) is provided between the upper part of the impregnation bed (5) and the hopper (3) for catalyst carrier; a valve b (11) is arranged on a pipeline connecting the top of the solution tank (12) and the bottom of the dipping bed (5); an emptying valve (14) is arranged on a pipeline connecting the top of the solution tank (12) and the vacuum unit (15); a valve c (13) is arranged on a pipeline connected with the solution pump (1) at the bottom of the solution tank (12); a valve a (2) is arranged between the outlet of the solution pump (1) and the solution distributor (4).
6. An impregnation apparatus for catalyst in accordance with claim 1, characterized in that the top of the solution tank (12) is provided with a valve d (16) of a blow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853161.XU CN211329412U (en) | 2019-10-31 | 2019-10-31 | Impregnation device for catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921853161.XU CN211329412U (en) | 2019-10-31 | 2019-10-31 | Impregnation device for catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211329412U true CN211329412U (en) | 2020-08-25 |
Family
ID=72091295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921853161.XU Active CN211329412U (en) | 2019-10-31 | 2019-10-31 | Impregnation device for catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211329412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743627A (en) * | 2019-10-31 | 2020-02-04 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Catalyst impregnation device and method |
-
2019
- 2019-10-31 CN CN201921853161.XU patent/CN211329412U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743627A (en) * | 2019-10-31 | 2020-02-04 | 新疆兵团现代绿色氯碱化工工程研究中心(有限公司) | Catalyst impregnation device and method |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110743627B (en) | Catalyst impregnating device and method thereof | |
| US10161048B2 (en) | Cold spray powder feeders with in-situ powder blending | |
| CN211329412U (en) | Impregnation device for catalyst | |
| CN102872633A (en) | Multifunctional filtering, washing and drying machine | |
| CN105498856B (en) | A kind of catalyst successive impregnation device | |
| KR20180125764A (en) | Substrate processing chamber | |
| RU2377485C1 (en) | Spraying drier | |
| CN203886846U (en) | Novel automatic bottle drying machine | |
| CN105086577A (en) | Inorganic pigment production device | |
| CN105683692A (en) | Method for cleaning a nozzle arrangement in spray drying apparatus, and spray drying apparatus for carrying out the method | |
| CN204193879U (en) | Granulation sprayer unit in a kind of vitamine D3 microcapsule powder production | |
| US6648969B2 (en) | Fluidized bed granulation coating device, and fluidized bed granulation coating method | |
| CN105013200A (en) | Spray dryer for food | |
| EP2728288A1 (en) | Spray drier | |
| CN107149916A (en) | A kind of vertical fluidized bed for being used to prepare catalyst and system | |
| CN108014853B (en) | Continuous catalyst impregnator, application thereof and impregnation method for adsorbing desulfurization catalyst | |
| CN112077326B (en) | Atomizing equipment for preparing copper alloy powder | |
| CN208229853U (en) | A kind of novel atomizing condensing granulation apparatus | |
| CN116065016A (en) | Annealing device for cold-rolled non-oriented electrical steel thin strip | |
| CN213135050U (en) | Atomization device for preparing copper alloy powder | |
| CN215233946U (en) | Mixing device for adding liquid during mixing | |
| KR101872820B1 (en) | Rotary drum impregnation apparatus and method thereof | |
| CN210260323U (en) | Feeding device is used in production of zirconia thermal spraying powder | |
| CN209576604U (en) | A kind of drug spraying controlled-release fertilizer production pelletizer | |
| EP3842114B1 (en) | Washing apparatus and washing method for metal filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |