High-temperature oil-containing hydrogen efficient condensation recovery system

Abstract

The utility model provides a kind of high-temperature oil-containing hydrogen gas efficient condensation recovery system, including first heat exchanger, gas-liquid separation tank, oil-water separator and second heat exchanger, the material output end of first heat exchanger and the spray head of gas-liquid separation tank middle part pre-set communication, the bottom of gas-liquid separation tank and the bottom of oil-water separator are connected by pipeline, and conveying pump is provided on the pipeline, the lower part pre-set pipe mouth of oil-water separator and the material input end of second heat exchanger are communicated, the material output end of second heat exchanger and the inside pre-set high-speed centrifugal spray head of gas-liquid separation tank are communicated, and high-speed centrifugal spray head is below and is provided with defoaming metal net, the upper end of gas-liquid separation tank is fixedly connected with hydrogen gas exhaust pipe, and the lower end of gas-liquid separation tank is fixedly connected with.The utility model can separate oil gas and hydrogen, in addition to refrigerant, liquid in system circulates.

Description

Technical Field

[0001] This utility model relates to the field of chemical and petroleum technology, and in particular to a high-temperature oil-containing hydrogen gas high-efficiency condensation and recovery system. Background Technology

[0002] In petrochemical production, high-temperature oil-hydrogen mixtures are generated, such as in hydrogenation processes. To protect the environment and improve efficiency, these mixtures are separated and then recovered individually. This invention provides a high-efficiency condensation and recovery system for high-temperature oil-containing hydrogen gas. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a high-temperature, oil-containing hydrogen gas efficient condensation and recovery system, comprising a first heat exchanger, a gas-liquid separator, an oil-water separator, and a second heat exchanger. The material output end of the first heat exchanger is connected to a pre-set nozzle in the middle of the gas-liquid separator. The bottom of the gas-liquid separator and the bottom of the oil-water separator are connected by a pipeline, on which a delivery pump is installed. A pre-set pipe at the lower part of the oil-water separator is connected to the material input end of the second heat exchanger. The material output end of the second heat exchanger is connected to a pre-set high-speed centrifugal nozzle inside the gas-liquid separator, and a defoaming metal mesh is installed below the high-speed centrifugal nozzle. A hydrogen gas outlet pipe is fixedly connected to the upper end of the gas-liquid separator, and a heat exchange copper tube is installed at the lower part of the gas-liquid separator. The material undergoes multiple cooling processes, thereby liquefying the oil and gas, thus separating the hydrogen gas as much as possible. Furthermore, the water in contact with the material is in an internal circulation.

[0004] Preferably, the refrigerant inlet of the first heat exchanger is fixedly connected to a first auxiliary pipe, and the first auxiliary pipe is connected to the material outlet of the first heat exchanger. Furthermore, a throttling valve for controlling the on / off state is installed on the first auxiliary pipe. The refrigerant is water. When water needs to be added to the system or the temperature of the material delivered by the first heat exchanger is too high, the first auxiliary pipe is connected to add water to the system.

[0005] Preferably, the refrigerant inlet of the heat exchange copper tube is fixedly connected to a second auxiliary pipe, and the second auxiliary pipe is connected to a nozzle preset below the high-speed centrifugal nozzle. Furthermore, a throttling valve for controlling the on / off state is also installed on the second auxiliary pipe. Similarly, if the refrigerant is water, when the system needs water replenishment or there is excessive foam on the demister mesh, the second auxiliary pipe is connected to replenish water to the system.

[0006] Preferably, a third auxiliary pipe is fixedly connected to the hydrogen exhaust pipe, and the other end of the third auxiliary pipe is connected to the material output end of the second heat exchanger. In addition, a throttling valve for controlling the on / off state is also provided on the third auxiliary pipe. The water condensed in the hydrogen exhaust pipe is returned through the third auxiliary pipe.

[0007] Preferably, a fourth auxiliary pipe is fixedly connected to the pipeline at the output end of the delivery pump, and the other end of the fourth auxiliary pipe is fixedly connected to the lower part of the gas-liquid separator. In addition, a throttle valve for controlling the on / off state is also provided on the fourth auxiliary pipe. When the liquid in the lower part of the gas-liquid separator is insufficient, the fourth auxiliary pipe is opened, and most of the liquid output by the delivery pump is guided back into the gas-liquid separator.

[0008] Preferably, a fifth auxiliary pipe is fixedly connected to the refrigerant inlet of the second heat exchanger, and the other end of the fifth auxiliary pipe is fixedly connected to the material outlet of the second heat exchanger. Furthermore, a throttling valve for controlling the on / off state is also installed on the fifth auxiliary pipe. The function of the fifth auxiliary pipe is the same as that of the first auxiliary pipe.

[0009] The beneficial effects of this utility model are as follows: 1. It is equipped with multiple heat exchange structures to fully cool the high-temperature mixed gas, thereby liquefying the oil and gas and separating the oil and gas from the hydrogen.

[0010] 2. In the entire system, the liquid in contact with the mixed gas is circulated. Some of it evaporates and is discharged with the hydrogen. If the liquid is sent out for cooling, problems such as leakage of the mixed gas may occur. Relatively speaking, the circulation setting is more environmentally friendly and efficient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the present invention.

[0012] List of reference numerals in the attached diagram: 1. First heat exchanger; 2. First auxiliary pipe; 3. Gas-liquid separator; 4. Heat exchange copper tube; 5. Second auxiliary pipe; 6. High-speed centrifugal nozzle; 7. Hydrogen exhaust pipe; 8. Third auxiliary pipe; 9. Transfer pump; 10. Fourth auxiliary pipe; 11. Oil-water separator; 12. Second heat exchanger; 13. Fifth auxiliary pipe. Detailed Implementation

[0013] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0014] like Figure 1As shown, a high-temperature oil-containing hydrogen gas high-efficiency condensation and recovery system is described. Note that the system also includes temperature and pressure sensors, and comprises a first heat exchanger 1, a gas-liquid separator 3, an oil-water separator 11, and a second heat exchanger 12. The material output end of the first heat exchanger 1 is connected to a pre-set nozzle in the middle of the gas-liquid separator 3. High-temperature oil-hydrogen mixed gas is introduced into the first heat exchanger 1, undergoes preliminary cooling, and is then sent to the gas-liquid separator 3. During this process, the oil and gas begin to liquefy.

[0015] The bottom of the gas-liquid separator 3 and the bottom of the oil-water separator 11 are connected by a pipeline, and a transfer pump 9 is installed on this pipeline. The oil-water mixture located at the bottom of the gas-liquid separator 3 is sent into the oil-water separator 11 by the transfer pump 9. The lower part of the oil-water separator 11 is connected to the material input end of the second heat exchanger 12. After stratification, the water is sent into the second heat exchanger 12 for cooling, while the residual oil is sent out from the upper part of the oil-water separator 11 for recycling. The material output end of the second heat exchanger 12 is connected to the high-speed centrifugal nozzle inside the gas-liquid separator 3. The high-speed centrifugal nozzle 6 can quickly and evenly spray cooled water to mix thoroughly with the pre-cooled material, thereby reducing its temperature and achieving the purpose of liquefying and descending the oil and gas while the hydrogen rises. A defoaming metal mesh is installed below the high-speed centrifugal nozzle 6. Although the high-speed centrifugal nozzle 6 sprays cooling water to contact the pre-cooled material for cooling, the high-speed rotation of the high-speed centrifugal nozzle 6 and the oil-water mixing will generate a large amount of foam to a certain extent. If the foam is pushed upward by the hydrogen, it will affect the quality of the output hydrogen. Therefore, a defoaming metal mesh is installed.

[0016] The upper end of the gas-liquid separator 3 is fixedly connected to a hydrogen exhaust pipe 7. The hydrogen inside the gas-liquid separator 3 is sent out through the hydrogen exhaust pipe. In addition, a large amount of water vapor is also discharged during the hydrogen discharge process. At this time, the system will consume a lot of water. The lower part of the gas-liquid separator 3 is equipped with a heat exchange copper pipe 4 to dissipate heat from the liquid inside the gas-liquid separator 3. The entire system is equipped with three heat exchange structures to cool the high-temperature oil-hydrogen mixture to meet the requirements of oil-gas separation.

[0017] The first heat exchanger 1 has a first auxiliary pipe 2 fixedly connected to the refrigerant input end. The refrigerant is water, and the first auxiliary pipe 2 is connected to the material output end of the first heat exchanger 1. In addition, the first auxiliary pipe 2 is also equipped with a throttle valve to control the on / off state. By opening the throttle valve, cold water is injected into the high-temperature oil-hydrogen mixture, which can cool down the mixture and replenish water at the same time.

[0018] The refrigerant inlet of the heat exchange copper tube 4 is fixedly connected to a second auxiliary pipe 5, which is also connected to a pre-installed nozzle below the high-speed centrifugal nozzle 6. Furthermore, a throttling valve for controlling the on / off state is installed on the second auxiliary pipe 5. This second auxiliary pipe 5 is used for further water replenishment and for further defoaming after spraying onto the defoaming metal mesh.

[0019] A third auxiliary pipe 8 is fixedly connected to the hydrogen exhaust pipe 7, and the other end of the third auxiliary pipe 8 is connected to the material output end of the second heat exchanger 12. In addition, a throttle valve for controlling the on / off state is also installed on the third auxiliary pipe 8. The water condensed in the hydrogen exhaust pipe 7 is returned through the third auxiliary pipe 8, and the liquid can only flow in one direction here.

[0020] A fourth auxiliary pipe 10 is fixedly connected to the pipeline at the output end of the transfer pump 9, and the other end of the fourth auxiliary pipe 10 is fixedly connected to the lower part of the gas-liquid separator 3. In addition, a throttle valve for controlling the on / off state is also installed on the fourth auxiliary pipe 10. A liquid level sensor is installed on the gas-liquid separator 3 here. By acquiring the change in liquid level, it can determine whether the liquid pumped by the transfer pump 9 is sent to the oil-water separator 11 or pumped back to the gas-liquid separator 3.

[0021] The refrigerant inlet of the second heat exchanger 12 is fixedly connected to the fifth auxiliary pipe 13, and the other end of the fifth auxiliary pipe 13 is fixedly connected to the material outlet of the second heat exchanger 12. In addition, a throttling valve for controlling the on / off state is also installed on the fifth auxiliary pipe 13. The functions and effects of the first auxiliary pipe 2 and the fifth auxiliary pipe 13 are the same, and will not be described in detail here.

[0022] The technical means disclosed in this utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A high-temperature oil-containing hydrogen efficient condensation and recovery system, characterized in that, The system includes a first heat exchanger (1), a gas-liquid separator (3), an oil-water separator (11), and a second heat exchanger (12). The material output end of the first heat exchanger (1) is connected to a nozzle pre-set in the middle of the gas-liquid separator (3). The bottom of the gas-liquid separator (3) and the bottom of the oil-water separator (11) are connected by a pipe, and a delivery pump (9) is installed on the pipe. The lower port of the oil-water separator (11) is connected to the material input end of the second heat exchanger (12). The material output end of the second heat exchanger (12) is connected to a high-speed centrifugal nozzle (6) pre-set inside the gas-liquid separator (3). A defoaming metal mesh is installed below the high-speed centrifugal nozzle (6). A hydrogen gas pipe (7) is fixedly connected to the upper end of the gas-liquid separator (3), and a heat exchange copper pipe (4) is installed at the lower part of the gas-liquid separator (3).

2. The high-temperature oil-containing hydrogen high-efficiency condensation and recovery system according to claim 1, characterized in that: The first heat exchanger (1) has a first auxiliary pipe (2) fixedly connected to the refrigerant input end, and the first auxiliary pipe (2) is connected to the material output end of the first heat exchanger (1). In addition, a throttle valve for controlling the on / off state is also provided on the first auxiliary pipe (2).

3. The high-temperature oil-containing hydrogen high-efficiency condensation and recovery system according to claim 1, characterized in that: The refrigerant input end of the heat exchange copper tube (4) is fixedly connected to a second auxiliary pipe (5), and the second auxiliary pipe (5) is connected to a nozzle preset below the high-speed centrifugal nozzle (6). In addition, a throttling valve for controlling the on / off state is also provided on the second auxiliary pipe (5).

4. The high-temperature oil-containing hydrogen high-efficiency condensation and recovery system according to claim 1, characterized in that: The hydrogen pipeline (7) is fixedly connected to a third auxiliary pipe (8), and the other end of the third auxiliary pipe (8) is connected to the material output end of the second heat exchanger (12). In addition, a throttle valve for controlling the on / off state is also provided on the third auxiliary pipe (8).

5. The high-temperature oil-containing hydrogen high-efficiency condensation and recovery system according to claim 1, characterized in that: A fourth auxiliary pipe (10) is fixedly connected to the pipeline at the output end of the delivery pump (9), and the other end of the fourth auxiliary pipe (10) is fixedly connected to the lower part of the gas-liquid separator (3). In addition, a throttle valve for controlling the on / off state is also provided on the fourth auxiliary pipe (10).

6. The high-temperature oil-containing hydrogen high-efficiency condensation and recovery system according to claim 1, characterized in that: The refrigerant input end of the second heat exchanger (12) is fixedly connected to the fifth auxiliary pipe (13), and the other end of the fifth auxiliary pipe (13) is fixedly connected to the material output end of the second heat exchanger (12). In addition, a throttle valve for controlling the on / off state is also provided on the fifth auxiliary pipe (13).

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