Tubular reactor for gas generation reaction
By designing a pipe reactor that includes heat exchange jacket and alternately connected rising and falling pipelines, the problems of insufficient liquid residence time and difficulty in equipment control in the gas generation reaction are solved, and the liquid residence time is extended and the equipment stability is improved.
Patent Information
- Application Number
- CN202421649898.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-12
AI Technical Summary
During the gas-generated reaction, the gas occupies an effective reaction space, making it difficult for the liquid to stay, reducing the reaction time, and gas agglomeration leads to intermittent liquid flow, increasing the equipment vibration and control difficulty.
A tubular reactor including a heat exchange jacket and a reaction pipeline is designed. The reaction pipeline is alternately connected by an ascending pipeline and a descending pipeline. The gas rises rapidly through an ascending pipeline with a larger diameter, and the liquid flows through a lowering pipeline with a smaller diameter. The flow and heat transfer efficiency are optimized using a baffle plate and a thermal oil system.
It effectively increases the residence time of the liquid in the reactor, reduces the reactor volume, reduces equipment investment, and improves the stability of reaction control and the long-term operation capability of the equipment.
Smart Images
Figure CN222829658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tubular reactors, in particular to a tubular reactor used for gas generation reactions. Background Art
[0002] In the continuous flow production method, tubular reactors are a widely used, low-cost, and diverse type of reactor. Common tubular reactors include coil reactors, straight tube reactors, baffled tubular reactors, etc. These reactors are used in different continuous flow production scenarios and play an important role.
[0003] There is a type of reaction that produces a large amount of gas during the reaction process, such as the Huang Minglong reduction reaction. The amount of gas produced during the reaction is often equimolar or multi-molar. The volume of gas with the same molar number is hundreds of times that of liquid. If an ordinary tubular reactor is used, the gas occupies the effective reaction space. The continuous flow reaction equipment itself is designed with a limited liquid holding capacity. Through process intensification, the reaction process is accelerated, but the generation of gas promotes the rapid flow of liquid, making it difficult for the liquid to stay under the reaction conditions, reducing the effective reaction time. In order to achieve the designed residence time, a longer pipeline must be designed to increase the liquid holding capacity, and most of the precious liquid holding space is occupied by invalid gas, which is a waste in design; gas agglomerates in ordinary tubular reactors, causing intermittent liquid flow, which not only makes the reaction difficult to control, but also forms a liquid hammer effect in the pipeline, increasing vibration, which is not conducive to the long-term stable operation of the equipment.
[0004] In summary, it is necessary to design a reactor for gas generation to solve the above problems. Utility Model Content
[0005] In view of the problems in the related art, the utility model proposes a tubular reactor for gas generation reaction to overcome the above technical problems existing in the existing related art.
[0006] To this end, the specific technical solutions adopted by the utility model are as follows:
[0007] A tubular reactor for gas generation reaction comprises a heat exchange jacket, a reaction pipeline is arranged inside the heat exchange jacket, the reaction pipeline comprises a plurality of ascending pipelines and a plurality of descending pipelines, the ascending pipelines and the descending pipelines are connected alternately in sequence, one end of the descending pipeline is connected to a material inlet, one end of the ascending pipeline is connected to a material outlet, and a material liquid temperature sensor is installed inside the material outlet.
[0008] Furthermore, a first heat transfer oil inlet and a second heat transfer oil inlet are respectively installed on one side of the heat exchange jacket, a first temperature sensor is installed inside the first heat transfer oil inlet and a second temperature sensor is installed inside the second heat transfer oil inlet and outlet.
[0009] Furthermore, a heat transfer oil drain port is connected to the bottom of the heat exchange jacket.
[0010] Furthermore, the outer layer of the heat exchange jacket is wrapped with a heat-insulating layer, and saddles are symmetrically connected to both sides of the heat exchange jacket.
[0011] Furthermore, an exhaust valve is provided at the end cover of the heat exchange jacket.
[0012] Furthermore, the diameter of the descending pipe is 1-20 mm, and the diameter of the ascending pipe is 5-200 mm.
[0013] Furthermore, baffles are provided on the peripheries of the descending pipe and the ascending pipe, and the baffles are connected to the heat exchange jacket.
[0014] The beneficial effects of the utility model are:
[0015] The utility model makes improvements on the prior art. In actual use, the tubular reactor makes the generated gas flow faster than the liquid flow rate in the tube, which is convenient for the discharge of gas and effectively increases the proportion of liquid in the pipeline, thereby effectively extending the residence time of the liquid in the tube and reducing the volume of the reactor. It effectively solves the problem of effectively reducing the gas residence time and increasing the liquid residence time in a reaction system with gas generation, effectively reduces equipment investment and reduces equipment volume. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a schematic diagram of the main structure of a tubular reactor used for gas generation reaction according to an embodiment of the utility model.
[0018] In the figure:
[0019] 101. heat exchange jacket; 102. reaction pipeline; 1. first heat transfer oil inlet and outlet; 2. second heat transfer oil inlet and outlet; 3. material inlet; 4. exhaust valve; 5. material liquid temperature sensor; 6. material outlet; 7. ascending pipeline; 8. descending pipe; 9. baffle; 10. saddle; 11. heat transfer oil drain port; 12. second temperature sensor; 13. first temperature sensor; 14. insulation layer. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] According to an embodiment of the present invention, a tubular reactor for gas generation reaction is provided.
[0022] like Figure 1 As shown, according to an embodiment of the utility model, a tubular reactor for gas generation reaction includes a heat exchange jacket 101, a reaction pipe 102 is arranged inside the heat exchange jacket 101, the reaction pipe 102 includes a plurality of ascending pipes 7 and a plurality of descending pipes 8, the ascending pipes 7 and the descending pipes 8 are alternately connected in sequence, one end of the descending pipe 8 is connected to a material inlet 3, one end of the ascending pipe 7 is connected to a material outlet 6, a material liquid temperature sensor 5 is installed inside the material outlet 6, the diameter of the descending pipe 8 is 1-20 mm, and the diameter of the ascending pipe 7 is 5-200 mm.
[0023] Through the above technical solution, for the scenario where gas is generated during the reaction process, the gas flow rate is made faster than the liquid, reducing the residence time of the gas in the reactor, thereby effectively increasing the residence time of the liquid in the reactor.
[0024] In order to reduce the residence time of the gas in the reactor, the gas flow rate must be accelerated. The specific gravity of the gas is only a few hundredths of that of the liquid. By using the principle that the gas floats quickly in the liquid, the gas and liquid flow rates can be effectively separated.
[0025] The reaction pipeline 102 is installed vertically to the ground and is composed of a plurality of ascending pipelines 7 and a plurality of descending pipelines 8 connected alternately in sequence, wherein the diameter of the descending pipeline 8 is 1-20 mm, and that of the ascending pipeline 7 is 5-200 mm, and in the same reactor, the diameter of the ascending pipeline 7 is larger than that of the descending pipeline 8. The purpose of such design is that in the ascending pipeline 7, since the specific gravity of gas is much smaller than that of liquid, gas is rapidly agglomerated after being generated in the ascending pipeline 7 with a larger diameter, forming bubbles, and rapidly floating up, and the movement speed is significantly faster than that of liquid, while the diameter of the descending pipeline 8 is smaller, forming a gas-liquid plunger flow, effectively leveling the gas-liquid velocity difference, and further increasing the gas-liquid displacement in the next-level ascending pipeline 7, thereby allowing the liquid to stay in the pipeline for a longer time, so that the material inlet 3 can facilitate the material to enter the descending pipe 8 and the ascending pipeline 7, the material outlet 6 can facilitate the discharge of the material, and the material-liquid temperature sensor 5 can achieve the function of detecting the outlet liquid temperature.
[0026] like Figure 1As shown, according to the tubular reactor for gas generation reaction according to the embodiment of the utility model, a first heat transfer oil inlet and outlet 1 and a second heat transfer oil inlet and outlet 2 are respectively installed on one side of the heat exchange jacket 101, a first temperature sensor 13 is installed inside the first heat transfer oil inlet and outlet 1, and a second temperature sensor 12 is installed inside the second heat transfer oil inlet and outlet 2. A heat transfer oil drain port 11 is connected to the bottom of the heat exchange jacket 101, the outer layer of the heat exchange jacket 101 is wrapped with an insulation layer 14, saddles 10 are symmetrically connected to both sides of the heat exchange jacket 101, an exhaust valve 4 is arranged at the end cover of the heat exchange jacket 101, and a baffle 9 is arranged on the periphery of the descending pipe 8 and the ascending pipe 7, and the baffle 9 is connected to the heat exchange jacket 101.
[0027] Through the above technical scheme, by setting the first heat transfer oil inlet and outlet 1 and the second heat transfer oil inlet and outlet 2, the function of facilitating the entry and exit of hot oil is achieved, the first temperature sensor 13 and the second temperature sensor 12 are used to facilitate the detection of the temperatures of the first heat transfer oil inlet and outlet 1 and the second heat transfer oil inlet and outlet 2, the heat transfer oil drain port 11 is used to drain the heat transfer oil, the insulation layer 14 is used to prevent the heat loss of the heat exchange jacket 101, the saddle 10 is used to facilitate the installation of the heat exchange jacket 101, the exhaust valve 4 is used to discharge the gas from the heat exchange jacket 101, and the baffle 9 increases the flow rate of the fluid in the heat exchange jacket 101 and strengthens the turbulence intensity, thereby improving the heat transfer efficiency.
[0028] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.
[0029] In summary, with the help of the above technical solution of the utility model, for the scenario where gas is generated during the reaction process, the gas flow rate is made faster than the liquid, the residence time of the gas in the reactor is reduced, thereby effectively increasing the residence time of the liquid in the reactor.
[0030] In order to reduce the residence time of the gas in the reactor, the gas flow rate must be accelerated. The specific gravity of the gas is only a few hundredths of that of the liquid. By using the principle that the gas floats quickly in the liquid, the gas and liquid flow rates can be effectively separated.
[0031] The reaction pipeline 102 is installed vertically to the ground, and is formed by a plurality of ascending pipelines 7 and a plurality of descending pipes 8 connected alternately in sequence, wherein the diameter of the descending pipe 8 is 1-20 mm, and that of the ascending pipe 7 is 5-200 mm, and in the same reactor, the diameter of the ascending pipe 7 is larger than that of the descending pipe 8. The purpose of such design is that in the ascending pipe 7, since the specific gravity of gas is much smaller than that of liquid, gas is rapidly agglomerated after being generated in the ascending pipe 7 with a larger diameter, forming bubbles, and rapidly floating up, and the movement speed is significantly faster than that of liquid, while the diameter of the descending pipe 8 is smaller, forming a gas-liquid plunger flow, effectively leveling the gas-liquid speed difference, and further increasing the gas-liquid displacement in the next-level ascending pipe 7, so that the liquid stays in the pipeline for a longer time, so that the material inlet 3 can facilitate the material to enter the descending pipe 8 and the ascending pipe 7, so that the material outlet 6 can facilitate the material to be discharged, and the material-liquid temperature sensor 5 can achieve the function of detecting the outlet liquid temperature;
[0032] By setting the first heat transfer oil inlet and outlet 1 and the second heat transfer oil inlet and outlet 2, the function of facilitating the inlet and outlet of hot oil is achieved, the first temperature sensor 13 and the second temperature sensor 12 are used to facilitate the detection of the temperatures of the first heat transfer oil inlet and outlet 1 and the second heat transfer oil inlet and outlet 2, the heat transfer oil drain port 11 is used to drain the heat transfer oil, the insulation layer 14 is used to prevent the heat loss of the heat exchange jacket 101, the saddle 10 is used to facilitate the installation of the heat exchange jacket 101, the exhaust valve 4 is used to discharge the gas from the heat exchange jacket 101, and the baffle 9 increases the flow rate of the fluid in the heat exchange jacket 101 and strengthens the turbulence intensity, thereby improving the heat transfer efficiency.
[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A tubular reactor for a gas generating reaction, characterized in that: The invention comprises a heat exchange jacket (101), wherein a reaction pipe (102) is arranged inside the heat exchange jacket (101), wherein the reaction pipe (102) comprises a plurality of ascending pipes (7) and a plurality of descending pipes (8), wherein the ascending pipes (7) and the descending pipes (8) are connected alternately in sequence, wherein one end of the descending pipe (8) is connected to a material inlet (3), and one end of the ascending pipe (7) is connected to a material outlet (6), wherein a material liquid temperature sensor (5) is installed inside the material outlet (6).
2. A tubular reactor for gas generation reaction according to claim 1, characterized in that: A first heat transfer oil inlet and outlet (1) and a second heat transfer oil inlet and outlet (2) are respectively installed on one side of the heat exchange jacket (101); a first temperature sensor (13) is installed inside the first heat transfer oil inlet and outlet (1), and a second temperature sensor (12) is installed inside the second heat transfer oil inlet and outlet (2).
3. A tubular reactor for gas generation reaction according to claim 2, characterized in that: The bottom of the heat exchange jacket (101) is connected to a heat transfer oil drain port (11).
4. A tubular reactor for gas generation reaction according to claim 3, characterized in that: The outer layer of the heat exchange jacket (101) is wrapped with a heat insulation layer (14), and saddles (10) are symmetrically connected to both sides of the heat exchange jacket (101).
5. A tubular reactor for gas generation reaction according to claim 4, characterized in that: An exhaust valve (4) is provided at the end cover of the heat exchange jacket (101).
6. A tubular reactor for gas generation reaction according to claim 1, characterized in that: The diameter of the down pipe (8) is 1-20 mm, and the diameter of the up pipe (7) is 5-200 mm.
7. A tubular reactor for gas generation reaction according to claim 6, characterized in that: Baffles (9) are provided on the periphery of the downcomer (8) and the upcomer (7), and the baffles (9) are connected to the heat exchange jacket (101).