Liquid collector

Abstract

The utility model provides a liquid collector which comprises a collector body, a chilled water inlet pipeline arranged on the side wall of the collector body, a T-shaped pipeline connected with one end of the chilled water inlet pipeline, a comb-tooth-shaped bent pipeline connected with one end of the T-shaped pipeline and a liquid receiving disc arranged below the comb-tooth-shaped bent pipeline. According to the technical scheme, the combined design of the T-shaped pipeline and the comb-tooth-shaped bent pipeline is adopted, the flowing path of the chilled water is prolonged, the heat exchange contact area is increased, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. A multi-level heat exchange interface is formed, the contact efficiency of a low-temperature medium and the inner wall of the heat exchanger is remarkably improved, condensate is promoted to be rapidly separated out, the gas retention time is prolonged through a three-dimensional condensation path, the condensation period of benzene steam is compressed in cooperation with instant flow guiding of the liquid receiving disc, and the dissipation rate is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of liquid collection technology, and specifically to a liquid collector. Background Technology

[0002] Benzene, an important chemical raw material, possesses the physical properties of a low melting point (5.5℃) and high volatility, readily vaporizing to form volatile organic compounds (VOCs) under normal temperature and pressure. During chemical production, storage, transportation, and experiments, the release of gaseous benzene not only wastes resources but also poses a serious threat to the health of operators and environmental safety. Statistics show that occupational exposure cases caused by benzene vapor leaks account for 12%-15% of acute poisoning incidents in the chemical industry, and its carcinogenicity and neurotoxicity pose significant health risks to those with long-term exposure. Current methods for recovering gaseous benzene mainly employ a single condenser tube structure, resulting in limited heat exchange area and low efficiency. Utility Model Content

[0003] This invention provides a liquid collector to solve the problems of waste and environmental safety caused by the escape of gaseous benzene, as well as the low efficiency of existing recycling technologies.

[0004] To address the aforementioned problems, this utility model provides a liquid collector, comprising: a collector body, a chilled water inlet pipe disposed on the side wall of the collector body, a T-shaped pipe connected to one end of the chilled water inlet pipe, a comb-shaped bend pipe connected to one end of the T-shaped pipe, a liquid receiving tray disposed below the comb-shaped bend pipe, a chilled water outlet pipe disposed below the chilled water inlet pipe, a liquid recovery pipe connected to the liquid receiving tray and disposed on the side wall of the collector body, and a gas inlet disposed below the collector body. Through the above design, the combination of the T-shaped pipe and the comb-shaped bend pipe extends the chilled water flow path and increases the heat exchange contact area, forming a multi-level heat exchange interface. This significantly improves the contact efficiency between the low-temperature medium and the inner wall of the heat exchanger, promotes rapid condensate precipitation, and extends the gas residence time through a three-dimensional condensation path. Combined with the immediate flow guidance of the liquid receiving tray, the benzene vapor condensation cycle is compressed, and the emission rate is significantly reduced.

[0005] According to one embodiment of this utility model, the aforementioned comb-shaped bent pipe has two layers and is connected to an intermediate jet mixer located outside the collector body via a pipe. Through this design, the double-layered comb-shaped pipe forms a staggered three-dimensional condensation interface, increasing the effective heat transfer area compared to a single-layer structure. Combined with the turbulence enhancement provided by the jet mixer, the heat transfer coefficient between the hot and cold fluids is significantly improved, and the benzene vapor liquefaction response time is significantly shortened.

[0006] According to one embodiment of the present invention, the above-mentioned intermediate jet mixer includes a Venturi tube, a swirl mixing chamber connected to the Venturi tube, and a chilled water inlet branch pipe disposed on the side wall of the swirl mixing chamber. Through the above scheme, the scaling effect generated by the Venturi tube forms a high-speed jet at the throat. Combined with the tangential liquid inlet design of the swirl mixing chamber, the hot and cold fluids generate a spiral motion in three-dimensional space, which increases the efficiency compared with the traditional radial mixer and ensures sufficient heat and mass exchange.

[0007] According to one embodiment of the present invention, the outer wall of the T-shaped pipe is provided with a vortex groove. Through the above scheme, the gas flow direction is changed, longitudinal vortex is forcibly generated, the gas boundary layer is destroyed, the heat exchange efficiency is improved, the gas residence time is extended, the uniform distribution of condensate film is promoted, and the condensation effect is further improved.

[0008] According to one embodiment of the present invention, a V-shaped groove is provided at the liquid receiving tray connected to the liquid recovery pipe. The inclined structure of the V-shaped groove causes the condensate to flow in a directional manner under the action of gravity, thereby accelerating the collection of benzene after condensation.

[0009] According to one embodiment of the present invention, the liquid receiving tray is provided with holes for gas passage, and the array of holes forms a gas escape channel, so that the condensate is continuously discharged upward in the gas phase during the accumulation of the liquid receiving tray, thereby further improving the condensation efficiency.

[0010] According to one embodiment of the present invention, the gas inlet is provided with a valve.

[0011] According to one embodiment of the present invention, the top of the collector body is provided with an explosion-proof device. The safety valve in the explosion-proof device will automatically open when the internal pressure exceeds a preset threshold, thereby discharging the excess gas into the safety device to prevent an explosion accident.

[0012] The technical advantages of this application are as follows:

[0013] The liquid collector provided in this application adopts a double-layer comb-shaped bend pipe to increase the contact area between chilled water and gas, form turbulence to enhance heat transfer, and at the same time prevent condensate accumulation. Through the combination of Venturi tube and swirl mixing chamber, chilled water and gas are fully mixed, improving condensation efficiency, thereby improving the technical efficiency of gaseous benzene recovery, reducing material waste, and ensuring personnel and environmental safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a liquid collector provided by this utility model.

[0015] Figure 2 This is an isometric sectional view of a liquid collector provided by this utility model.

[0016] Figure 3 This is a schematic diagram of the intermediate jet mixer structure of a liquid collector provided by this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Collector body; 2. Chilled water inlet pipe; 3. Liquid recovery pipe; 4. Chilled water outlet pipe; 5. Gas inlet; 6. Valve; 7. Intermediate jet mixer; 71. Venturi tube; 72. Swirl mixing chamber; 73. Chilled water inlet branch pipe; 8. Explosion-proof device; 9. T-shaped pipe; 10. Comb-shaped bend pipe; 11. Liquid receiving tray; 12. V-groove; 13. Hole. Detailed Implementation

[0019] The following will be combined with the appendix Figures 1-3 The embodiments of the technical solution of this application are described in detail below. The following embodiments are only used to illustrate the technical solution of this application more clearly, and are therefore only examples and should not be used to limit the scope of protection of this application.

[0020] Example 1

[0021] Reference Figures 1-3 This utility model provides a liquid collector, comprising: a collector body 1, a chilled water inlet pipe 2 disposed on the side wall of the collector body 1, a T-shaped pipe 9 connected to one end of the chilled water inlet pipe 2, a comb-shaped bend pipe 10 connected to one end of the T-shaped pipe 9, a liquid receiving tray 11 disposed below the comb-shaped bend pipe 10, a chilled water outlet pipe 4 disposed below the chilled water inlet pipe 2, a liquid recovery pipe 3 connected to the liquid receiving tray 11 and disposed on the side wall of the collector body 1, and a gas inlet 5 disposed below the collector body 1. Through the above scheme, the combination design of the T-shaped pipe 9 and the comb-shaped bend pipe 10 extends the flow path of chilled water and increases the heat exchange contact area, forming a multi-level heat exchange interface, significantly improving the contact efficiency between the low-temperature medium and the inner wall of the heat exchanger, promoting the rapid precipitation of condensate, and extending the gas residence time through the three-dimensional condensation path. Combined with the instantaneous flow guidance of the liquid receiving tray 11, the condensation cycle of benzene vapor is compressed, and the emission rate is significantly reduced.

[0022] The aforementioned comb-shaped bend pipe 10 has two layers and is connected to the intermediate jet mixer 7 located outside the collector body 1 via a pipe. Through this scheme, the double-layer comb-shaped pipe forms a three-dimensional condensation interface with alternating upper and lower layers, increasing the effective heat transfer area compared to a single-layer structure. Combined with the turbulence enhancement of the jet mixer, the heat transfer coefficient between the hot and cold fluids is significantly improved, and the benzene vapor liquefaction response time is significantly shortened.

[0023] The aforementioned intermediate jet mixer 7 includes a venturi tube 71, a swirl mixing chamber 72 connected to the venturi tube 71, and a chilled water inlet branch pipe 73 located on the side wall of the swirl mixing chamber 72. Through the above scheme, the scaling effect generated by the venturi tube 71 forms a high-speed jet at the throat. Combined with the tangential liquid inlet design of the swirl mixing chamber 72, the hot and cold fluids generate a spiral motion in three-dimensional space, which increases the efficiency compared to the traditional radial mixer and ensures sufficient heat and mass exchange.

[0024] The outer wall of the aforementioned T-shaped pipe 9 is provided with vortex grooves. Through the above scheme, the gas flow direction is changed, longitudinal vortex is forcibly generated, the gas boundary layer is destroyed, the heat exchange efficiency is improved, the gas residence time is extended, the uniform distribution of condensate film is promoted, and the condensation effect is further improved.

[0025] The liquid receiving tray 11 is connected to the liquid recovery pipe and is provided with a V-shaped groove 12. The inclined structure of the V-shaped groove 12 causes the condensate to flow in a directional manner under the action of gravity, which accelerates the collection of benzene after condensation.

[0026] The aforementioned liquid receiving tray 11 is provided with holes 13 for gas passage. The array of holes 13 forms a gas escape channel, which allows the condensate to be continuously discharged upward in the gas phase during the accumulation of condensate in the liquid receiving tray 11, thereby further improving the condensation efficiency.

[0027] The gas inlet 5 is equipped with a valve 6, and the top of the collector body 1 is equipped with an explosion-proof device 8. The safety valve in the explosion-proof device 8 will automatically open when the internal pressure exceeds a preset threshold, releasing excess gas into the safety device to prevent an explosion.

[0028] Working principle:

[0029] Warm chilled water enters through the side wall inlet pipe and is split into two streams via the T-shaped pipe 9. The split chilled water then enters the double-layered comb-shaped bend pipe 10. This structure causes the water flow path to repeatedly bend, creating a highly turbulent zone. Part of the chilled water undergoes enhanced treatment through an externally connected intermediate jet mixer 7. The venturi tube 71's throat contraction accelerates the water flow, generating a negative pressure zone that entrains surrounding gas. Guide vanes within the swirl mixing chamber 72 facilitate mixing of the chilled water. Secondary chilled water injected through the side wall branch pipe regulates the temperature gradient, further improving heat transfer efficiency. The chilled water, having completed heat exchange, collects in the lower layer of the comb-shaped pipe and exits from the chilled water outlet pipe 4, forming a closed loop.

[0030] Gas enters the collector through the bottom gas inlet 5. Valve 6 is a pneumatic regulating valve, which can adjust the opening degree according to the operating conditions to control the air intake. During the upward flow of gas, it makes full contact with the outer surface of the comb-tooth pipe. The low temperature of the chilled water lowers the gas temperature below the dew point, and the condensate forms a continuous liquid film on the comb tooth surface. The vortex grooves of the comb tooth structure generate high-frequency disturbances, causing the liquid film to break into fine droplets. Under the balance of gravity and airflow drag, the droplets fall along the gaps between the comb teeth to the liquid receiving tray 11. The surface of the liquid receiving tray 11 is provided with V-shaped grooves 12, and the condensate collects along the inclined surface to the liquid recovery pipe, realizing the separation of gas and liquid phases.

[0031] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A liquid collector, characterized in that, include: The collector body (1) includes a chilled water inlet pipe (2) located on the side wall of the collector body (1), a T-shaped pipe (9) connected to one end of the chilled water inlet pipe (2), a comb-shaped bend pipe (10) connected to one end of the T-shaped pipe (9), a liquid receiving tray (11) located below the comb-shaped bend pipe (10), a chilled water outlet pipe (4) located below the chilled water inlet pipe (2), a liquid recovery pipe (3) connected to the liquid receiving tray (11) and connected to the side wall of the collector body (1), and a gas inlet (5) located below the collector body (1).

2. The liquid collector according to claim 1, characterized in that, The comb-shaped bend pipe (10) has two layers and is connected to the intermediate jet mixer (7) located outside the collector body (1) via a pipe.

3. The liquid collector according to claim 2, characterized in that, The intermediate jet mixer (7) includes a venturi tube (71), a swirl mixing chamber (72) connected to the venturi tube (71), and a chilled water inlet branch pipe (73) disposed on the side wall of the swirl mixing chamber (72).

4. The liquid collector according to claim 1, characterized in that, The outer wall of the T-shaped pipe (9) is provided with a vortex groove.

5. The liquid collector according to claim 1, characterized in that, The liquid receiving tray (11) is provided with a V-shaped through groove (12) at the point where it connects to the liquid recovery pipe (3).

6. The liquid collector according to claim 5, characterized in that, The liquid receiving tray (11) is provided with a hole (13) for gas to pass through.

7. The liquid collector according to claim 1, characterized in that, The gas inlet (5) is equipped with a valve (6).

8. The liquid collector according to claim 1, characterized in that, The collector body (1) is equipped with an explosion-proof device (8) at its top.

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