CN209885774U - Fixed bed reaction experimental device - Google Patents
Fixed bed reaction experimental device Download PDFInfo
- Publication number
- CN209885774U CN209885774U CN201920348911.1U CN201920348911U CN209885774U CN 209885774 U CN209885774 U CN 209885774U CN 201920348911 U CN201920348911 U CN 201920348911U CN 209885774 U CN209885774 U CN 209885774U
- Authority
- CN
- China
- Prior art keywords
- reaction tube
- fixed bed
- section
- reaction
- furnace body
- 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
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The utility model discloses a fixed bed reaction experimental device, belonging to the field of chemical equipment, comprising a furnace body reaction tube, wherein the upper and lower ends of the reaction tube respectively penetrate through the upper and lower ends of the furnace body and are sealed by an upper end cover and a lower end cover, and the upper and lower ends of the reaction tube are respectively provided with a discharge port and a feed port; the reaction tube comprises a preheating section, a conical connecting section and a reaction section which are sequentially connected from bottom to top, wherein the small end of the conical connecting section faces upwards, and the large end of the conical connecting section faces downwards; the reaction tube is internally provided with a catalyst support which comprises a support rod arranged on the inner wall of the lower end cover and a tray arranged on the support rod, the tray is matched with the inner wall of the conical connecting section, and a plurality of vent holes are uniformly distributed on the tray. The utility model relates to a rationally, convenient to use not only can be applicable to the pilot scale experiment, still has quick, convenient characteristics of loading, change catalyst.
Description
Technical Field
The utility model relates to a chemical industry equipment field, in particular to fixed bed reaction experimental apparatus.
Background
A fixed bed reactor refers to a device in which a fluid is reacted through a bed of stationary solid material. The solid material is usually referred to as catalyst, which is in the form of uniform particles and is deposited to form a bed having a certain height. The bed layer is static, and gas or liquid reaction materials contact with the catalyst through the bed layer to carry out catalytic reaction.
The fixed bed reactor has various forms according to different heat exchange modes between a bed layer and the outside, and comprises a heat insulation type fixed bed reactor, a tubular fixed bed reactor, an auto-heating type fixed bed reactor and the like, wherein the tubular fixed bed reactor belongs to the genus of the great research and application. Tubular fixed bed reactors can in turn be classified according to tube pass structure as single-tube or multitubular parallel reactors. The single-tube fixed bed reactor has a simple structure and is mainly used for laboratory or small-scale production, while the multi-tube parallel fixed bed reactor is adopted in large-scale industrial production due to large handling capacity.
The existing fixed bed reaction device is suitable for a tube array type fixed bed catalyst evaluation complete set of equipment in a laboratory, the technology is mature, but the fixed bed catalyst evaluation experimental device is complex in structure and high in cost, and the catalyst is troublesome to fill and replace. Some patents mention that a simple fixed bed reaction device is automatically built by adopting a glass or quartz tube and a heating device, and the device is relatively simple and the cost is reduced under the condition of meeting the experimental requirements. However, the fixed bed catalyst evaluation complete equipment is only suitable for the research work of laboratory bench scale, the problem of difficult scale-up still exists, and when the project needs pilot scale experiment, the fixed bed reaction device between the laboratory and the industrialized scale is lacked. At present, experimental work of pilot scale amplification is mostly carried out by means of an industrial device, but the industrial device is complex, large in occupied space and complex in operation, large and small in size for amplification experiments, occupies production resources and is high in experiment cost.
SUMMERY OF THE UTILITY MODEL
A tubular fixed bed catalyst evaluation complete sets equipment structure complicated, with high costs, the catalyst that exists to be used for the laboratory loads trouble and pilot scale experiment and does not have suitable fixed bed reaction unit's problem, the utility model aims to provide a fixed bed reaction experimental apparatus.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a fixed bed reaction experimental device comprises a furnace body and a reaction tube arranged in the furnace body, wherein the upper end and the lower end of the reaction tube respectively penetrate through the upper end and the lower end of the furnace body, the upper end and the lower end of the reaction tube are respectively sealed by an upper end cover and a lower end cover, and the upper end and the lower end of the reaction tube are respectively provided with a discharge hole and a feed hole; the reaction tube comprises a preheating section, a conical connecting section and a reaction section which are sequentially connected from bottom to top, wherein the small end of the conical connecting section faces upwards, and the large end of the conical connecting section faces downwards; the reaction tube is internally provided with a catalyst support which comprises a support rod arranged on the inner wall of the lower end cover and a tray arranged on the support rod, the tray is matched with the inner wall of the conical connecting section, and a plurality of vent holes are uniformly distributed on the tray.
Furthermore, the lower extreme of bracing piece is equipped with internal thread or external screw thread, be equipped with the regulation post on the lower end cover inner wall, adjust the post with bracing piece threaded connection.
Furthermore, a vent valve is arranged on the lower end cover.
Preferably, the furnace body is cylindrical, and the reaction tube and the furnace body are coaxial.
Furthermore, the furnace body, the preheating section and the reaction section are all provided with temperature sensors.
Preferably, the upper part, the middle part and the lower part of the furnace body are provided with temperature sensors.
Furthermore, the reaction tube also comprises a gasification section, wherein the gas inlet end of the gasification section is connected to the upper part of the preheating section, and the gas outlet end of the gasification section is connected to the conical connecting section below the tray; and a partition plate is also arranged in the reaction tube and is positioned between the air inlet end and the air outlet end.
Preferably, the partition is adapted to an inner wall of the tapered connecting section.
Preferably, the partition is connected to the support rod.
Preferably, the gasification stage is helically wound around the preheating stage.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
1. by arranging the reaction tubes with different diameters, the amplification research work of the small-scale reaction can be realized, and the use of an industrial device which is complicated, occupies a large space and is complicated to operate is avoided;
2. the catalyst support and the conical connecting section are arranged, so that the tray can be disengaged from the conical connecting section by opening the lower end cover, and the catalyst loaded on the tray is discharged; the catalyst can be added into the reaction tube by opening the upper end cover, so that the filling operation of the catalyst is simpler;
3. the arrangement of the air holes on the tray enables gas-phase materials to pass through smoothly, and the smooth proceeding of the reaction is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the catalyst support of the present invention.
In the figure, 1-furnace body, 2-preheating section, 3-gasification section, 4-reaction section, 5-conical connecting section, 6-upper end cover, 7-lower end cover, 8-supporting rod, 9-tray, 10-partition board, 11-temperature sensor, 12-air outlet end, 13-air inlet end, 14-discharge outlet, 15-feed inlet and 16-blow-down valve.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example one
As shown in FIG. 1, a fixed bed reaction experimental apparatus comprises a furnace body 1 and a reaction tube arranged in the furnace body 1, in this embodiment, the furnace body 1 and the reaction tube are both cylindrical and coaxial; the upper end and the lower end of the reaction tube respectively penetrate through the upper end and the lower end of the furnace body 1, the upper end and the lower end of the reaction tube are respectively sealed by an upper end cover 6 and a lower end cover 7, and the upper end and the lower end of the reaction tube are respectively provided with a discharge hole 14 and a feed hole 15; the reaction tube comprises a preheating section 2, a conical connecting section 5 and a reaction section 4 which are sequentially connected from bottom to top, wherein the small end of the conical connecting section 5 faces upwards, and the large end of the conical connecting section faces downwards; a catalyst support is arranged in the reaction tube, the catalyst support comprises a support rod 8 arranged on the inner wall of the lower end cover 7 and a tray 9 arranged on the support rod 8, the tray 9 is matched with the inner wall of the conical connecting section 5, a plurality of vent holes (not shown in the figure) are uniformly distributed on the tray 9 and used for gas phase materials to pass through, and the diameter of each vent hole is smaller than the size of a catalyst particle so as to prevent the catalyst from leaking; the catalyst supported on the trays 9 forms a catalyst bed.
In this embodiment, the tray 9 is circular, the diameter of the tray 9 is between the diameter of the large end and the diameter of the small end of the tapered connecting section 5, the outer side wall of the tray 9 has a certain taper, the taper is the same as that of the tapered connecting section 5, and the outer edge of the tray 9 is attached to the inner wall of the tapered connecting section 5 when the tray is used.
In order to allow the catalyst carried on the tray 9 to be quickly removed from the tray 9 when it is desired to remove it, in this embodiment, the upper surface of the tray 9 is a tapered surface, such as a cone or a pyramid.
In this embodiment, the lower end of the support rod 8 is provided with internal threads or external threads, and the inner wall of the corresponding lower end cover 7 is provided with an adjusting column (not shown in the figure), which is in threaded connection with the support rod 8; when in use, the lower end cover 7 is rotated to adjust the gap between the lower end cover 7 and the lower end of the reaction tube and adjust the gap between the tray 9 and the conical connecting section 5.
In this embodiment, the lower end cap 7 is provided with a blow-down valve 16.
In the embodiment, the furnace body 1, the preheating section 2 and the reaction section 4 are all provided with temperature sensors 11; in order to better measure the temperature in the furnace body 1, the temperature sensors 11, such as temperature control thermocouples, are arranged on the upper, middle and lower parts of the furnace body 1; a temperature sensor 11, such as a thermometer, in the preheating section 2, which is arranged on the lower end cover 7, for detecting the temperature of the material in the preheating section 2; a temperature sensor 11, such as a thermometer, is provided in the upper end cap 6 for detecting the temperature of the catalyst bed in the reaction section 4.
When the device is used, a catalyst support is fed from the lower end of the reaction tube, the lower end cover 7 seals the lower end of the reaction tube, and the tray 9 is just tightly attached to the inner wall of the conical connecting section 5 after the lower end cover 7 is installed in place through the length of the support rod 8 calculated in advance, so that errors in the process can be eliminated through the adjusting column in threaded connection with the support rod 8; then pouring the catalyst into the reaction tube, namely the reaction section 4, through the upper end cover 6 to form a catalyst bed layer, and then closing the upper end cover 6; the reaction is carried out, the material enters the preheating section 2 from the feed inlet 15 and then rises, enters the catalyst bed layer through the air holes on the tray 9 for reaction, and the reaction product is discharged out of the furnace body 1 through the discharge outlet 14; the temperature in the reaction process is monitored by temperature sensors 11 arranged in the furnace body 1, the preheating section 2 and the reaction section 4; when the reaction in the furnace body 1 is too violent, the control can be carried out by releasing part of the materials through the emptying valve 16. When the catalyst needs to be replaced, the lower end cover 7 is opened, the support rod 8 is moved downwards to enable the tray 9 to be separated from the matching relation with the conical connecting section 5, the catalyst flows out of the reaction tube under the action of gravity, and the catalyst is taken out very quickly and conveniently.
When a fixed bed reaction is used for carrying out a gas phase reaction at a high temperature, if the reaction material is a liquid phase at normal temperature, the liquid phase material is often not well gasified by heat because the size of the reaction tube is limited when the liquid phase material directly enters the reaction tube, or the liquid phase material does not reach the reaction temperature in the reaction section after gasification.
For further reinforcing liquid phase material gasification effect, improve reaction efficiency, on the basis of above-mentioned embodiment, the utility model provides a following scheme:
example two
The difference from the first embodiment is that: the reaction tube also comprises a gasification section 3, wherein the gas inlet end 13 of the gasification section 3 is connected to the upper part of the preheating section 2, and the gas outlet end 12 is connected to the side wall of the conical connecting section 5 below the tray 9; the reaction tube is also internally provided with a clapboard 10, and the clapboard 10 is positioned between the gas inlet end 13 and the gas outlet end 12 and is used for preventing the gas inlet end and the gas outlet end from being directly communicated in the reaction tube and communicating only through the gasification section 3.
The baffle plate 10 is also circular, is a blind plate, is not provided with air holes on the surface, and the outer edge of the baffle plate 10 is matched with the inner wall of the conical connecting section 5. Of course, it can also be adapted to the inner side wall of the preheating section 2; in this embodiment, the partition 10 is also located in the tapered connecting section 5 after the lower end cap 7 is installed.
In this embodiment, the separator 10 is attached to the support rod 8 as a part of the catalyst support, as shown in fig. 2. The arrangement is such that the partition 10 moves in synchronism with the tray 9 so as not to obstruct the entrance and exit of the tray 9.
In order to improve the gasification effect and increase the heat exchange area, in this embodiment, the gasification section 3 spirally surrounds the preheating section 2.
As shown in figure 1, the material enters the reaction tube from the feed inlet 15, is blocked by the partition plate 10 after being primarily gasified in the preheating section 2, can only enter the gasification section 3 from the gas inlet end 13 of the gasification section 3, then flows in the gasification section 3, simultaneously increases the temperature, finally enters the conical connection section 5 from the gas outlet end 12, and then enters the catalyst bed layer through the vent holes of the tray 9 for reaction.
The catalyst replacement steps in this embodiment are consistent with those in the embodiments, and are not described again.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (10)
1. The utility model provides a fixed bed reaction experimental apparatus which characterized in that: the reaction tube comprises a furnace body and a reaction tube arranged in the furnace body, wherein the upper end and the lower end of the reaction tube respectively penetrate through the upper end and the lower end of the furnace body, the upper end and the lower end of the reaction tube are respectively sealed by an upper end cover and a lower end cover, and the upper end and the lower end of the reaction tube are respectively provided with a discharge hole and a feed hole; the reaction tube comprises a preheating section, a conical connecting section and a reaction section which are sequentially connected from bottom to top, wherein the small end of the conical connecting section faces upwards, and the large end of the conical connecting section faces downwards; the reaction tube is internally provided with a catalyst support which comprises a support rod arranged on the inner wall of the lower end cover and a tray arranged on the support rod, the tray is matched with the inner wall of the conical connecting section, and a plurality of vent holes are uniformly distributed on the tray.
2. The fixed bed reaction experimental apparatus according to claim 1, characterized in that: the lower extreme of bracing piece is equipped with internal thread or external screw thread, be equipped with the regulation post on the lower end cover inner wall, adjust the post with bracing piece threaded connection.
3. The fixed bed reaction experimental apparatus according to claim 1, characterized in that: and the lower end cover is provided with a vent valve.
4. The fixed bed reaction experimental apparatus according to claim 1, characterized in that: the furnace body is cylindrical, and the reaction tube and the furnace body are coaxial.
5. The fixed bed reaction experimental apparatus according to claim 1, characterized in that: the furnace body, the preheating section and the reaction section are all provided with temperature sensors.
6. The fixed bed reaction experimental apparatus according to claim 5, characterized in that: the upper, middle and lower parts of the furnace body are provided with temperature sensors.
7. The fixed bed reaction experimental apparatus according to any one of claims 1 to 6, characterized in that: the reaction tube also comprises a gasification section, wherein the gas inlet end of the gasification section is connected to the upper part of the preheating section, and the gas outlet end of the gasification section is connected to the conical connecting section below the tray; and a partition plate is also arranged in the reaction tube and is positioned between the air inlet end and the air outlet end.
8. The fixed bed reaction experimental apparatus according to claim 7, characterized in that: the partition board is matched with the inner wall of the conical connecting section.
9. The fixed bed reaction experimental apparatus according to claim 7, characterized in that: the baffle is connected on the supporting rod.
10. The fixed bed reaction experimental apparatus according to claim 7, characterized in that: the gasification section spirally surrounds the preheating section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348911.1U CN209885774U (en) | 2019-03-19 | 2019-03-19 | Fixed bed reaction experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348911.1U CN209885774U (en) | 2019-03-19 | 2019-03-19 | Fixed bed reaction experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209885774U true CN209885774U (en) | 2020-01-03 |
Family
ID=68997669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920348911.1U Active CN209885774U (en) | 2019-03-19 | 2019-03-19 | Fixed bed reaction experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209885774U (en) |
-
2019
- 2019-03-19 CN CN201920348911.1U patent/CN209885774U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102858447B (en) | Process for the synthesis of methanol | |
| CN203916623U (en) | Heat exchange reactor | |
| CN108114672B (en) | Soaking type spiral plate fixed bed reactor for gas-solid catalytic reaction | |
| CN105032305A (en) | Novel radial plate type reactor | |
| CN103721643B (en) | A kind of Z-type butylene oxidation-dehydrogenation fixed bed radial reactor | |
| CN102895922A (en) | Industrial plate type reactor for preparing glycol by hydrogenating oxalate or preparing alcohol by hydrogenating ester | |
| CN104841340A (en) | Novel carbonylation reactor for process of producing glycol through synthesis gas | |
| CN209885774U (en) | Fixed bed reaction experimental device | |
| CN104524922A (en) | Method for designing radial bed with high-efficiency airflow distribution and designed radial bed | |
| JPH0339732B2 (en) | ||
| RU2381057C2 (en) | Reaction vessel | |
| CN202876771U (en) | Industrialized plate type reactor for preparing glycol by oxalate hydrogenation or alcohol by ester hydrogenation | |
| CN201848233U (en) | External-circulation and parallel-flow tube array type fixed-bed reactor | |
| CN203379869U (en) | Slurry bed reactor | |
| CN106861561A (en) | efficient isothermal radial reactor | |
| CN110314618A (en) | Sectional integral type solid catalysis continuous reaction apparatus and continuous reaction system | |
| CN220696686U (en) | Tube type fixed bed reactor | |
| CN210252196U (en) | Novel tubular reactor | |
| CN216260659U (en) | Multilayer combination catalytic bed convenient to dismantle | |
| CN216879280U (en) | Barrel type reactor | |
| CN206762861U (en) | Efficient isothermal radial reactor | |
| CN205308294U (en) | Visual fluidized bed reaction device | |
| CN210787296U (en) | Low bed resistance water pipe type reaction unit | |
| CN204911449U (en) | A novel oxonation ware that is used for synthetic gas system ethylene glycol technology | |
| CN211562890U (en) | Radial reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |