CN213556956U - Liquid phase hydrogenation reactor differential pressure level gauge mounting structure - Google Patents
Liquid phase hydrogenation reactor differential pressure level gauge mounting structure Download PDFInfo
- Publication number
- CN213556956U CN213556956U CN202022004745.9U CN202022004745U CN213556956U CN 213556956 U CN213556956 U CN 213556956U CN 202022004745 U CN202022004745 U CN 202022004745U CN 213556956 U CN213556956 U CN 213556956U
- Authority
- CN
- China
- Prior art keywords
- liquid phase
- pipe
- hydrogenation reactor
- differential pressure
- phase hydrogenation
- 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
A liquid phase hydrogenation reactor differential pressure level gauge mounting structure is characterized by comprising a liquid phase hydrogenation reactor, an outer pipe, an inner pipe, an upper extension pipe and a differential pressure transmitter, wherein the outer pipe is arranged at the outer end of a mounting port and is provided with a liquid phase leading-out port; the inner pipe is arranged in the outer pipe, the inner end of the inner pipe is positioned in the liquid phase hydrogenation reactor, and the outer end of the inner pipe extends out of the outer pipe to form a gas phase leading-out port; the upper extension pipe is positioned in the liquid phase hydrogenation reactor, the bottom end of the upper extension pipe is connected with the inner end of the inner pipe, and the top end of the upper extension pipe extends out of a liquid phase; the differential pressure transmitter is provided with a first detection point connected with the liquid phase lead-out port and a second detection point connected with the gas phase lead-out port. The double-pipe-opening design is realized by the single pipe opening, the structure is compact and reasonable, the catalyst filling space of the reactor is improved, the problem that the old reactor cannot be opened is solved, and the double-pipe-opening design has important significance for ensuring the operation load of the device and the hydrodesulfurization depth.
Description
Technical Field
The utility model relates to a liquid level measurement device especially relates to a differential pressure level gauge of liquid phase hydrogenation ware.
Background
The traditional trickle bed hydrogenation technology adopts a three-phase reaction (gas-liquid-solid catalyst), and a large amount of hydrogen is needed in the reaction to maintain the gas phase in a reactor as a continuous phase all the time; and after the surplus hydrogen is pressurized by the recycle hydrogen compressor, mixing with new hydrogen to continuously serve as raw material hydrogen feeding. The trickle bed hydrogenation process increases investment and operating costs due to increased bed temperature, large radial temperature difference and high energy consumption. The liquid phase hydrogenation technology adopts liquid-solid two-phase reaction, raw oil carries dissolved hydrogen as reaction hydrogen supply, the liquid phase in the reactor is always a continuous phase, and hydrogen is a disperse phase. The application of liquid phase hydrogenation technology in the fields of aviation kerosene hydrodesulfurization, diesel oil hydrodesulfurization, reformate hydrodeolefination and the like is becoming mature.
Liquid phase hydrogenation is divided into a descending process and an ascending process according to different material flow directions of a reactor. The downflow process feeds from the top of the reactor, with a gas phase space above the catalyst at the top of the reactor, to control and maintain the reaction pressure steady by the buffer characteristics of the gas phase. The top of the reactor is provided with a differential pressure liquid level meter which controls a liquid phase regulating valve at the outlet of the reactor, so that the balance of the materials entering and leaving the reactor and the stability of the liquid level are kept, the catalyst is always under the liquid level, and the exposure of the catalyst is avoided.
Due to the significant technical advantages of liquid phase hydrogenation over trickle bed hydrogenation, there is a growing trend for owners to modify trickle bed hydrogenation units into liquid phase hydrogenation units, or to modify discarded trickle bed diesel hydrodesulfurization units into aviation kerosene liquid phase hydrodesulfurization units after upgrading the quality of the diesel. The modification necessarily involves the problems of old and modified reactor, and one main modification is to install a differential pressure liquid level meter on the top of the reactor. The hydrogenation reactor belongs to three types of containers, has the characteristics of large size, large pressure and high wall thickness, is generally made of a Cr-Mo steel and stainless steel overlaying layer, and is subjected to heat treatment after being manufactured. These characteristics of the hydrogenation reactor determine the inability to re-open the gauge orifice on the old reactor. The traditional method is to use two thermocouple temperature measuring pipe orifices of the top bed layer of the reactor as the orifice of a differential pressure liquid level meter. The disadvantage of this is that the catalyst loading space is greatly reduced, even 30-40% of the catalyst loading needs to be sacrificed, and the equipment scale has to be reduced to ensure the necessary reaction space velocity.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a single port realizes simultaneously that the gas phase draws forth port and liquid phase and draws forth the liquid phase hydrogenation ware differential pressure level gauge mounting structure of port to foretell technical current situation and provide.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a differential pressure liquid level meter mounting structure of a liquid phase hydrogenation reactor is characterized by comprising
A liquid phase hydrogenation reactor, wherein the side wall of a liquid phase position is provided with an installation port;
an outer tube provided at an outer end of the mounting port and having a liquid phase lead-out port;
the inner pipe is arranged in the outer pipe, the inner end of the inner pipe is positioned in the liquid-phase hydrogenation reactor, and the outer end of the inner pipe extends out of the outer pipe to form a gas-phase leading-out port;
the upper extension tube is positioned in the liquid-phase hydrogenation reactor, the bottom end of the upper extension tube is connected with the inner end of the inner tube, and the top end of the upper extension tube extends out of the liquid phase; and
and a differential pressure transmitter having a first detection point connected to the liquid phase lead-out port and a second detection point connected to the gas phase lead-out port.
Preferably, the bottom end of the upper extension pipe is connected with the inner end of the inner pipe through a thread bent pipe.
Furthermore, the bottom end of the upward extending pipe is provided with a 180-degree U-shaped elbow with a downward port. The liquid phase raw material can be prevented from entering the inner tube and influencing the liquid level distortion.
Furthermore, a distribution disc is arranged above the liquid phase position of the liquid phase hydrogenation reactor, and the top end of the upper extension pipe extends out of the distribution disc.
Preferably, the outer pipe and the mounting port are connected and integrated through a first flange on the outer pipe and a second flange of the liquid phase hydrogenation reactor.
Preferably, the liquid phase lead-out port is provided with a liquid phase pressure-leading flange, and the gas phase lead-out port is provided with a gas phase pressure-leading flange.
Compared with the prior art, the utility model has the advantages of: the gas phase pressure is led out through the gas phase leading-out port, the liquid phase pressure is led out through the liquid phase leading-out port, the function of the liquid level meter is realized through the differential pressure transmitter, and the liquid phase hydrogenation reactor only needs to be provided with one port, so that the design purpose of double pipe openings is realized through a single pipe opening, the structure is compact and reasonable, the filling space of the catalyst of the reactor is improved, the difficult problem that the old reactor cannot be opened is solved, and the method has important significance for ensuring the operation load of the device and the hydrodesulfurization depth.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the differential pressure level gauge mounting structure of the liquid phase hydrogenation reactor in the present embodiment includes a liquid phase hydrogenation reactor 8, an outer tube 1, an inner tube 2, an upward extending tube 3, and a differential pressure transmitter 4.
A feed inlet is formed at the top of the liquid phase hydrogenation reactor 8, a mounting port is formed on the side wall of the liquid phase, a distribution disc 82 is arranged above the liquid phase, and a catalytic bed 83 is positioned in the liquid phase;
the outer tube 1 is arranged at the outer end of the mounting port and is provided with a liquid phase leading-out port 11; the inner pipe 2 is arranged in the outer pipe 1, the inner end is positioned in the liquid phase hydrogenation reactor 8, and the outer end extends out of the outer pipe 1 to form a gas phase leading-out port 22; the upper extension pipe 3 is positioned in the liquid phase hydrogenation reactor 8, the bottom end of the upper extension pipe is connected with the inner end of the inner pipe 2 through a thread elbow 21, the upper extension pipe penetrates through a catalytic bed 83, the top end of the upper extension pipe sequentially extends out of the liquid phase and distribution disc 82, and a 180-degree U-shaped elbow 31 with a downward port is arranged, so that liquid phase raw materials can be prevented from entering the inner pipe and influencing liquid level distortion.
The differential pressure transmitter 4 has a first detection point connected to the liquid phase lead-out port 11 and a second detection point connected to the gas phase lead-out port 22.
The outer pipe 1 and the mounting port are connected and integrated through a first flange 51 on the outer pipe 1 and a second flange 52 of the liquid phase hydrogenation reactor 8. The liquid phase lead-out port 11 is provided with a liquid phase pressure-leading flange 54, and the gas phase lead-out port 22 is provided with a gas phase pressure-leading flange 53.
A differential pressure gauge is a meter that calculates the level of an object in a vessel by measuring the pressure difference at two different points in the vessel. The common method is to open a flange pipe mouth in each of the gas phase space and the liquid phase space in the measuring range of the liquid level of the container, and install a pressure transmitter or a differential pressure transmitter, so the method is also called as a double-flange differential pressure liquid level meter. The core of the double-flange differential pressure liquid level meter is that one pipe orifice is positioned in a liquid phase space, and the other pipe orifice is positioned in a gas phase space. The present embodiment utilizes the above principle, and a single opening is used instead of two openings on the reactor, so that the measurement purpose of the double flange can be realized.
In the embodiment, only one thermocouple temperature measuring pipe orifice at the top of the catalyst bed is utilized, no new port is needed, the measurement of the differential pressure liquid level of the double flanges can be realized by adding some simple internal parts, no new opening is needed, the scale of the device is not reduced, and the problem of old recycling of the hydrogenation reactor is solved. The internal part has simple structure, rapid modification and implementation and outstanding production benefit.
Claims (6)
1. A differential pressure liquid level meter mounting structure of a liquid phase hydrogenation reactor is characterized by comprising
A liquid phase hydrogenation reactor (8), wherein the side wall of the liquid phase is provided with an installation port;
an outer tube (1) provided at an outer end of the mounting port and having a liquid phase lead-out port (11);
the inner pipe (2) is arranged in the outer pipe (1), the inner end of the inner pipe is positioned in the liquid phase hydrogenation reactor (8), and the outer end of the inner pipe extends out of the outer pipe (1) to form a gas phase leading-out port (22);
an upper extension tube (3) which is positioned in the liquid phase hydrogenation reactor (8), the bottom end of the upper extension tube is connected with the inner end of the inner tube (2), and the top end of the upper extension tube extends out of a liquid phase; and
and a differential pressure transmitter (4) having a first detection point connected to the liquid phase lead-out port (11) and a second detection point connected to the gas phase lead-out port (22).
2. The differential pressure liquid level meter mounting structure of the liquid phase hydrogenation reactor according to claim 1, characterized in that the bottom end of the upper extension tube (3) is connected with the inner end of the inner tube (2) through a threaded elbow (21).
3. The differential pressure liquid level gauge mounting structure of the liquid phase hydrogenation reactor according to claim 1, characterized in that the bottom end of the upper extension tube (3) is provided with a 180 ° U-shaped elbow with a downward port.
4. The liquid phase hydrogenation reactor differential pressure level gauge mounting structure according to claim 1, characterized in that a distribution disc is provided above the liquid phase level of the liquid phase hydrogenation reactor (8), and the top end of the upper extension tube (3) extends out of the distribution disc.
5. The differential pressure liquid level gauge mounting structure of the liquid phase hydrogenation reactor according to claim 1, characterized in that the outer tube (1) and the mounting port are connected and integrated through a first flange (51) on the outer tube (1) and a second flange (52) of the liquid phase hydrogenation reactor (8).
6. The differential pressure liquid level meter mounting structure of the liquid phase hydrogenation reactor according to claim 1, wherein a liquid phase pressure-inducing flange (54) is arranged on the liquid phase lead-out port (11), and a gas phase pressure-inducing flange (53) is arranged on the gas phase lead-out port (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022004745.9U CN213556956U (en) | 2020-09-14 | 2020-09-14 | Liquid phase hydrogenation reactor differential pressure level gauge mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022004745.9U CN213556956U (en) | 2020-09-14 | 2020-09-14 | Liquid phase hydrogenation reactor differential pressure level gauge mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213556956U true CN213556956U (en) | 2021-06-29 |
Family
ID=76571920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022004745.9U Active CN213556956U (en) | 2020-09-14 | 2020-09-14 | Liquid phase hydrogenation reactor differential pressure level gauge mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213556956U (en) |
-
2020
- 2020-09-14 CN CN202022004745.9U patent/CN213556956U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213556956U (en) | Liquid phase hydrogenation reactor differential pressure level gauge mounting structure | |
| CN219482579U (en) | Hydrogenation reactor feeding distributor | |
| CN204228676U (en) | There is the catalytic reaction Industrial Simulation device of pressure self-balancing, gas phase Inner eycle | |
| CN108514854A (en) | A kind of circulation flow reactor of adipic dinitrile hydrogenation production hexamethylene diamine | |
| CN108148621A (en) | boiling bed hydrogenation reactor and boiling bed hydrogenation method | |
| CN107661735B (en) | A kind of hydrogenator feed distributor and its feeding process, design method and purposes | |
| CN107519826A (en) | A kind of suspended-bed reactor and the method that liquid phase self-loopa is realized using the reactor | |
| CN108144556A (en) | A kind of boiling bed hydrogenation reaction system and boiling bed hydrogenation technique method | |
| CN202052525U (en) | Hydrogenation reactor for gas-liquid-solid three-phase fixed bed | |
| CN207929185U (en) | A kind of boiling bed hydrogenation reaction system | |
| CN214830131U (en) | Suspension bed reactor system | |
| CN209237897U (en) | A kind of sour solvent flows feeder apparatus online | |
| CN211463089U (en) | Gas, liquid, solid three-phase hydrogenation reaction system | |
| CN207342673U (en) | A kind of hydrogenation reactor feed distributor | |
| CN205903875U (en) | Experimental chemical industry experimental apparatus of magnetically stabilized bed cold die | |
| CN214538131U (en) | Hydrogenation furnace bed material level measuring device | |
| CN203065406U (en) | Catalyst metering adding device | |
| CN208865651U (en) | A kind of continuous production device | |
| CN103773444B (en) | Heavy oil hydrotreating method | |
| CN202555255U (en) | Variable-diameter tower reactor capable of carrying out continuous reaction | |
| CN108102697B (en) | A kind of heavy-oil hydrogenation processing method and system | |
| CN220919222U (en) | Novel reactor with spray heat exchange function | |
| CN207828191U (en) | Boiling bed hydrogenation reactor | |
| CN206285874U (en) | A kind of double material slurry-bed hydrocracking device of outer circulation type | |
| CN201064712Y (en) | Fixing fluid bed reactor for experimental investigation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |