Stripping tower condenser

Abstract

The utility model discloses a condenser of a stripping tower, which enables a heat exchange tube and an end plate not to move, enables steam to uniformly disperse and enter the heat exchange tube, and ensures reliable and sufficient heat exchange. The device comprises an upper tube box which is a conical barrel flared from top to bottom, a gas inlet is formed in the top of the upper tube box, and an anti-impact baffle is arranged under the gas inlet; the heat exchange cylinder comprises an upper cylinder, an expansion joint and a lower cylinder, the periphery of the lower end of the upper cylinder is connected with the periphery of the upper end of the lower cylinder through the expansion joint, a cooling water outlet is formed in the annular wall of the upper cylinder, a cooling water inlet is formed in the annular wall of the lower cylinder, an upper end plate covers the upper end face of the upper cylinder, and a lower end plate covers the lower end face of the lower cylinder. A plurality of heat exchange tubes are arranged between the upper end plate and the lower end plate; the lower tube box comprises a tube box body and a bottom oval end socket, a non-condensable gas outlet is formed in one side of the top of the tube box body, and a liquid outlet is formed in the bottom of the bottom oval end socket.

Description

Technical Field

[0001] The utility model relates to the technical field of condenser structures, in particular to a stripping tower condenser. Background Art

[0002] The stripping tower condenser is an important chemical equipment. Its working principle is to separate the gas phase and liquid phase through heat exchange between steam and condensed water, thereby achieving the purpose of recovery and separation.

[0003] However, the existing stripping tower condenser has a large difference in average metal wall temperature between the shell and tube due to the different materials of the shell and tube sides. As a result, after the heat exchange tube and the shell wall are assembled, the interface between the heat exchange tube and the end plate is prone to displacement, resulting in water leakage at the position of the heat exchange tube and the end plate. Therefore, it is urgent to develop a structure that can ensure reliable condensation in the stripping tower; in addition, the steam inlet of the existing stripping tower condenser directly rushes into the heat exchange tube, resulting in gas turbulence, which also requires the development of a corresponding structure for optimization. Summary of the Invention

[0004] In response to the above problems, the utility model provides a stripping tower condenser, which prevents the heat exchange tubes and end plates from moving, and allows steam to be evenly distributed into the heat exchange tubes, ensuring reliable and sufficient heat exchange.

[0005] The stripping tower condenser is characterized in that it comprises:

[0006] The upper tube box is a conical cylinder with an expanded opening from top to bottom. A gas inlet is provided at the top of the upper tube box. An impact baffle is provided directly below the gas inlet. The impact baffle is provided with a plurality of through holes in the thickness direction on the surface area.

[0007] The heat exchange cylinder comprises an upper cylinder, an expansion joint, and a lower cylinder. The outer periphery of the lower end of the upper cylinder is connected to the outer periphery of the upper end of the lower cylinder through the expansion joint. A cooling water outlet is provided on the annular wall of the upper cylinder, and a cooling water inlet is provided on the annular wall of the lower cylinder. The upper end surface of the upper cylinder is covered with an upper end plate, and the lower end surface of the lower cylinder is covered with a lower end plate. A plurality of heat exchange tubes are arranged between the upper and lower end plates, and the top of each heat exchange tube passes through the upper end plate and the bottom passes through the lower end plate.

[0008] The lower pipe box includes a pipe box body and a bottom elliptical head. A non-condensable gas outlet is provided on one side of the top of the pipe box body, and a liquid outlet is provided at the bottom of the bottom elliptical head. The liquid outlet is externally connected to a valve body. The valve body opens when the liquid level in the lower pipe box reaches a set height and closes when it reaches a set low level.

[0009] The bottom periphery of the upper tube box is connected to the second flange structure of the upper end plate periphery through a first flange structure, and the lower end plate periphery of the heat exchange cylinder is fixedly connected to the fourth flange structure of the top periphery of the lower tube box through a third flange structure.

[0010] It is further characterized by:

[0011] The cooling water inlet and cooling water outlet are large-diameter ports with the same aperture, which makes the liquid phase flow rate not high and the liquid phase can fill the shell side, thereby fully cooling the steam in the heat exchange tube;

[0012] The heat exchange tube is provided with a plurality of baffles in the area corresponding to the heat exchange cylinder to ensure sufficient and reliable heat exchange;

[0013] A liquid discharge port is also provided on one side of the lower cylinder corresponding to the lower end plate, for assisting in the discharge of liquid;

[0014] A plurality of low liquid level detection ports are arranged around the bottom upper area of the pipe box body, and corresponding liquid level gauges are placed in the low liquid level detection ports to detect the low position of the liquid level. A plurality of high liquid level detection ports are arranged around the upper position of the pipe box body, and corresponding liquid level gauges are placed in the high liquid level detection ports to detect the height position of the liquid level.

[0015] The pipe box body is also provided with a thermometer port and a pressure gauge port, respectively, to reliably monitor the condensed water in the pipe box body through the thermometer and the pressure gauge; the liquid phase collected in the lower pipe box needs to be closely monitored for liquid pressure and liquid temperature to avoid excessive pressure and temperature in the lower pipe box, which may cause excessive gas phase in the liquid phase medium;

[0016] The height of the lower tube box is not less than two-thirds of the height of the heat exchange cylinder, which enables the tube box body to store the liquid phase condensed by the heat exchange tube and further condense so that the gas phase in the liquid phase can be discharged through the non-condensable gas outlet.

[0017] After adopting the above technical solution, steam enters from the gas inlet of the upper tube box, and a bumper is provided below the gas inlet. Due to the large size of the gas inlet, the existing cylindrical cylinder will cause the air flow velocity to be slow and turbulent, so a conical cylinder structure combined with a bumper is adopted, so that the steam can enter the upper tube box evenly after diffusing outward, avoiding the turbulent flow of the gas; in order to improve the efficiency of heat exchange, the inlet and outlet of the shell-side medium of this equipment are relatively large, which makes the liquid phase flow velocity not high, and the liquid phase can fill the shell side, thereby fully cooling the steam in the heat exchange tube; and since the lower end periphery of the upper cylinder of the heat exchange cylinder is connected to the upper end periphery of the lower cylinder through an expansion joint, the thermal expansion and contraction values of the heat exchange tube and the heat exchange cylinder in the height direction are offset by the expansion joint; in summary, it prevents the heat exchange tube and the end plate from moving, and the steam is evenly distributed into the heat exchange tube, ensuring reliable and sufficient heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] The names corresponding to the serial numbers in the figure are as follows:

[0020] Upper tube box 10, gas inlet 11, anti-collision baffle 12, first flange structure 13, heat exchange cylinder 20, upper cylinder 21, expansion joint 22, lower cylinder 23, drain port 231, cooling water outlet 24, cooling water inlet 25, upper end plate 26, lower end plate 27, second flange structure 28, third flange structure 29, lower tube box 30, tube box body 31, bottom elliptical head 32, non-condensable gas outlet 33, liquid outlet 34, fourth flange structure 35, low liquid level detection port 36, high liquid level detection port 37, thermometer port 38, pressure gauge port 39, heat exchange tube 40, baffle 50, pull rod 60, and distance tube 70. DETAILED DESCRIPTION

[0021] Stripper condenser, see Figure 1 : It includes an upper tube box 10, a heat exchange cylinder 20, and a lower tube box 30;

[0022] The upper tube box 10 is a conical cylinder with an expanded opening from top to bottom. A gas inlet 11 is provided at the top of the upper tube box. A collision-proof baffle 12 is provided directly below the gas inlet 11. The collision-proof baffle 12 has a plurality of through-holes in the thickness direction on its surface area.

[0023] The heat exchange cylinder 20 includes an upper cylinder 21, an expansion joint 22, and a lower cylinder 23. The outer periphery of the lower end of the upper cylinder 21 is connected to the outer periphery of the upper end of the lower cylinder 23 through the expansion joint 22. A cooling water outlet 24 is provided on the annular wall of the upper cylinder 21, and a cooling water inlet 25 is provided on the annular wall of the lower cylinder 23. The upper end surface of the upper cylinder 21 is covered with an upper end plate 26, and the lower end surface of the lower cylinder 23 is covered with a lower end plate 27. A plurality of heat exchange tubes 40 are arranged between the upper end plate 26 and the lower end plate 27. The top of each heat exchange tube 40 passes through the upper end plate 26 and the bottom passes through the lower end plate 27.

[0024] The lower pipe box 30 includes a pipe box body 31 and a bottom elliptical head 32. A non-condensable gas outlet 33 is provided on one side of the top of the pipe box body 31, and a liquid outlet 34 is provided at the bottom of the bottom elliptical head 32. The liquid outlet 34 is externally connected to a valve body (not shown in the figure). The valve body opens when the liquid level in the lower pipe box 30 reaches a set height and closes when it reaches a set low level.

[0025] The bottom periphery of the upper tube box 10 is connected to the second flange structure 28 on the periphery of the upper end plate 26 through the first flange structure 13 and the sealing ring, and the periphery of the lower end plate 27 of the heat exchange cylinder 20 is fixed to the fourth flange structure 35 on the top periphery of the lower tube box 30 through the third flange structure 29 and the sealing ring.

[0026] In specific implementation: the cooling water inlet 25 and the cooling water outlet 24 are large-diameter ports with the same aperture, which makes the liquid phase flow rate not high, and the liquid phase can fill the shell side, thereby fully cooling the steam in the heat exchange tube;

[0027] Three sets of baffles 50 are provided in the area of the heat exchange tube 40 corresponding to the heat exchange cylinder 20. The three sets of baffles 50 are arranged by tie rods 60 and distance tubes 70 to ensure sufficient and reliable heat exchange.

[0028] A drain port 231 is further provided on one side of the lower cylinder 23 corresponding to the lower end plate 27 for assisting in draining the liquid.

[0029] A plurality of low-level detection ports 36 are arranged around the bottom upper area of the pipe box body 31. Corresponding liquid level gauges are placed in the low-level detection ports 36 to detect the low position of the liquid level. A plurality of high-level detection ports 37 are arranged around the upper position of the pipe box body 31. Corresponding liquid level gauges are placed in the high-level detection ports 37 to detect the height position of the liquid level.

[0030] The pipe box body 31 is also provided with a thermometer port 38 and a pressure gauge port 39, respectively, to reliably monitor the condensed water in the pipe box body through the thermometer and the pressure gauge; the liquid phase collected in the lower pipe box needs to be closely monitored for liquid pressure and liquid temperature to avoid excessive pressure and temperature in the lower pipe box, which may cause the liquid phase medium to produce excessive gas phase.

[0031] In specific implementation, the height of the lower tube box 30 is not less than two-thirds of the height of the heat exchange cylinder 20, which allows the tube box body 31 to store the liquid phase condensed by the heat exchange tube, and further condense so that the gas phase in the liquid phase can be discharged through the non-condensable gas outlet 33.

[0032] Its working principle is as follows: steam enters from the gas inlet of the upper tube box, and a baffle is provided below the gas inlet. Due to the large size of the gas inlet, the existing cylindrical cylinder will cause the air flow velocity to be slow and turbulent, so a conical cylinder structure combined with a baffle is adopted, so that the steam can evenly enter the upper tube box after diffusing outward, avoiding the turbulent flow of the gas; in order to improve the efficiency of heat exchange, the inlet and outlet of the shell-side medium of this equipment are relatively large, which makes the liquid phase flow velocity not high, and the liquid phase can fill the shell side, thereby fully cooling the steam in the heat exchange tube; and since the lower end periphery of the upper cylinder of the heat exchange cylinder is connected to the upper end periphery of the lower cylinder through an expansion joint, the thermal expansion and contraction values of the heat exchange tube and the heat exchange cylinder in the height direction are offset by the expansion joint; in summary, it prevents the heat exchange tube and the end plate from moving, and the steam is evenly distributed into the heat exchange tube, ensuring reliable and sufficient heat exchange.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0034] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Stripping tower condenser, characterized in that, It includes: The upper tube box is a conical cylinder with an expanded opening from top to bottom. A gas inlet is provided at the top of the upper tube box. An impact baffle is provided directly below the gas inlet. The impact baffle is provided with a plurality of through holes in the thickness direction on the surface area. The heat exchange cylinder comprises an upper cylinder, an expansion joint, and a lower cylinder. The outer periphery of the lower end of the upper cylinder is connected to the outer periphery of the upper end of the lower cylinder through the expansion joint. A cooling water outlet is provided on the annular wall of the upper cylinder, and a cooling water inlet is provided on the annular wall of the lower cylinder. The upper end surface of the upper cylinder is covered with an upper end plate, and the lower end surface of the lower cylinder is covered with a lower end plate. A plurality of heat exchange tubes are arranged between the upper and lower end plates, and the top of each heat exchange tube passes through the upper end plate and the bottom passes through the lower end plate. The lower pipe box includes a pipe box body and a bottom elliptical head. A non-condensable gas outlet is provided on one side of the top of the pipe box body, and a liquid outlet is provided at the bottom of the bottom elliptical head. The liquid outlet is externally connected to a valve body. The valve body opens when the liquid level in the lower pipe box reaches a set height and closes when it reaches a set low level. The bottom periphery of the upper tube box is connected to the second flange structure of the upper end plate periphery through a first flange structure, and the lower end plate periphery of the heat exchange cylinder is fixedly connected to the fourth flange structure of the top periphery of the lower tube box through a third flange structure.

2. The stripping tower condenser according to claim 1, wherein: The cooling water inlet and the cooling water outlet are large-diameter ports with the same aperture.

3. The stripping tower condenser according to claim 1, wherein: A plurality of baffles are provided in the area of the heat exchange tube corresponding to the heat exchange cylinder.

4. The stripping tower condenser according to claim 1, characterized in that: A liquid drain port is also provided at a position on one side of the lower cylinder corresponding to the lower end plate.

5. The stripping tower condenser according to claim 1, characterized in that: A number of low liquid level detection ports are arranged around the bottom upper area of the pipe box body, and corresponding liquid level gauges are placed in the low liquid level detection ports to detect the low position of the liquid surface. A number of high liquid level detection ports are arranged around the upper position of the pipe box body, and corresponding liquid level gauges are placed in the high liquid level detection ports to detect the height position of the liquid surface.

6. The stripping tower condenser according to claim 1, characterized in that: The pipe box body is also provided with a thermometer port and a pressure gauge port, respectively, and the condensed water in the pipe box body is monitored by the thermometer and the pressure gauge.

7. The stripping tower condenser according to claim 1, characterized in that: The height of the lower tube box is not less than two-thirds of the height of the heat exchange cylinder.

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