Cooling and dehumidifying device for high-temperature and high-humidity residual liquid tail gas of tank car

Abstract

The utility model discloses a tank car high-temperature and high-humidity residual liquid tail gas cooling and dehumidifying device, which comprises a condensation and dehumidification tower, which comprises a dehumidification area and a condensation area from bottom to top, and is provided with a bottom air inlet and a first cooling liquid outlet which are positioned below the dehumidification area and are communicated with a residual liquid tank, and a top air outlet positioned above the condensation area; the condenser is provided with a first air inlet communicated with the top air outlet, a condensation air outlet and a second cooling liquid outlet; the first cooling liquid outlet and the second cooling liquid outlet are communicated with a liquid inlet of the residual liquid tank; and the condensation area is provided with a top liquid inlet and a bottom liquid outlet. High-temperature and high-humidity tail gas is dehumidified and preliminarily cooled through the condensation dehumidification tower, then the condenser is combined for further cooling, low-temperature tail gas is obtained, the first cooling liquid outlet and the second cooling liquid outlet are communicated with the residual liquid tank, the temperature of residual liquid in the residual liquid tank can be reduced through backflow cooling residual liquid, and the condensation effect of the whole device can be optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to tail gas treatment technical field especially is involved in a kind of tank car high-temperature high-humidity residual liquid tail gas cooling and dehumidification device. BACKGROUND

[0002] Tank car will produce high-temperature residual liquid in the process of washing, and residual liquid will produce a large amount of moisture in the process of collection and storage, resulting in high-temperature high-humidity tail gas produced in residual liquid, high-temperature tail gas has high requirement to equipment in the process of conveying and processing, high-humidity tail gas has negative effect on the effect of subsequent tail gas catalytic oxidation processing, so the tail gas needs to be cooled and dehumidified, to reach the inlet operation requirement of equipment in subsequent processing procedure. UTILITY MODEL CONTENT

[0003] The utility model discloses a kind of tank car high-temperature high-humidity residual liquid tail gas cooling and dehumidification device, and the high-temperature high-humidity tail gas is dehumidified and preliminarily cooled by the setting of condensing dehumidification tower, further cooled in combination with condenser, low-temperature tail gas is obtained, first cooling liquid outlet and second cooling liquid outlet are communicated with residual liquid tank, and the temperature of residual liquid in residual liquid tank can be reduced by the backflow cooling residual liquid, which is beneficial to optimize the condensation effect of the whole device.

[0004] To achieve the above technical effects, the technical scheme of the utility model is as follows: a kind of tank car high-temperature high-humidity residual liquid tail gas cooling and dehumidification device, comprising:

[0005] Condensing dehumidification tower, from bottom to top including dehumidification zone and condensing zone, is provided with bottom gas inlet and first cooling liquid outlet located in the lower side of the dehumidification zone and communicated with residual liquid tank, and top gas outlet located in the upper side of the condensing zone;

[0006] Condenser is provided with first gas inlet communicated with the top gas outlet, and condensing gas outlet and second cooling liquid outlet;

[0007] First cooling liquid outlet and second cooling liquid outlet are communicated with the liquid inlet of residual liquid tank.

[0008] The condensing zone is provided with top liquid inlet and bottom liquid outlet.

[0009] Preferably, the dehumidification zone is provided with a plurality of dehumidification layers stacked along the air passage direction, the dehumidification layers are provided with air-permeable channels of mesh structure along the cross section of the layer thickness direction, and the air-permeable channels are communicated with the bottom surface and the top surface of the dehumidification layers.

[0010] Preferably, the condensing zone is provided with a spiral air guide plate extending along the air passage direction and a plurality of condensing pipes, the condensing pipes are arranged in the spiral air guide plate, one end of the condensing pipes is communicated with the top liquid inlet, and the other end is communicated with the bottom liquid outlet.

[0011] Preferably, the outer edge of the spiral air guide plate is sealingly connected with the inner wall of the condensation dehumidification tower, the inner edge of the spiral air guide plate is rotatably and fixedly connected with the shaft core support rod, the spiral air guide plate close to the dehumidification zone is a bottom air guide plate, and the bottom air guide plate is provided with air permeable holes.

[0012] Preferably, a hot liquid storage cavity is arranged between the dehumidification zone and the condensation zone, the maximum outer diameter of the hot liquid storage cavity is smaller than the inner diameter of the condensation dehumidification tower, air guide through holes in communication with the air permeable holes are arranged between the outer wall of the hot liquid storage cavity and the inner wall of the condensation dehumidification tower, the hot liquid storage cavity is in communication with the bottom liquid outlet, the bottom liquid outlet is sequentially connected with a condensate storage tank and a first circulating pump outside the tower, and the first circulating pump is in communication with the top liquid inlet.

[0013] Preferably, the spacing between adjacent condensation pipes is 2-3 cm.

[0014] Preferably, a cold liquid storage cavity is arranged at the top of the condensation zone, and the top gas outlet is located below the cold liquid storage cavity and in communication with the air guide channel surrounded by the spiral air guide plate.

[0015] Preferably, the storage liquid in the condensate storage tank is ethylene glycol aqueous solution.

[0016] Preferably, an air induction fan is further arranged, and the air induction fan is in communication with the condensation gas outlet.

[0017] The advantages and beneficial effects of the tank car high-temperature and high-humidity residual liquid tail gas cooling and dehumidifying device are as follows.

[0018] The tank car high-temperature and high-humidity residual liquid tail gas cooling and dehumidifying device has a reasonable structure, the high-temperature and high-humidity tail gas is dehumidified and preliminarily cooled through the condensation dehumidification tower, is further cooled by the condenser, and low-temperature tail gas is obtained, the first cooling liquid outlet and the second cooling liquid outlet are in communication with the residual liquid tank, and the backflow of the cooled residual liquid can reduce the temperature of the residual liquid in the residual liquid tank, thereby being beneficial to optimizing the condensation effect of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a structural schematic view of the tank car high-temperature and high-humidity residual liquid tail gas cooling and dehumidifying device of the utility model;

[0020] Fig. 2 is an internal perspective view of the condensation zone in the condensation dehumidification tower.

[0021] In the diagram: 1. Condensation dehumidification tower; 2. Condenser; 3. Residual liquid tank; 4. Condensate storage tank; 10. Shaft support rod; 11. Dehumidification zone; 12. Condensation zone; 21. First air inlet; 22. Condensate outlet; 42. First circulation pump; 110. Dehumidification layer; 100. Spiral air guide plate; 101. Bottom air inlet; 102. Top air outlet; 111. First coolant outlet; 121. Top liquid inlet; 122. Bottom liquid outlet; 221. Exhaust fan; 222. Second coolant outlet; 1201. Cold liquid collection chamber; 1202. Hot liquid collection chamber; 1001. Condenser pipe. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0023] The terms "top," "bottom," "top surface," and "bottom surface" refer to the normal operating state of the tank truck's high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] like Figs. 1-2 As shown, the high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device of this utility model includes a condensation dehumidification tower 1 and a condenser 2. The condensation dehumidification tower 1 includes a dehumidification zone 11 and a condensation zone 12 from bottom to top. It is provided with a bottom air inlet 101 and a first coolant outlet 111 located below the dehumidification zone 11 and communicating with the residual liquid tank 3, and a top air outlet 102 located above the condensation zone 12. The condenser 2 is provided with a first air inlet 21 communicating with the top air outlet 102, a condensation air outlet 22 and a second coolant outlet 222. The first coolant outlet 111 and the second coolant outlet 222 are connected to the liquid inlet of the residual liquid tank 3. The condensation zone 12 is provided with a top liquid inlet 121 and a bottom liquid outlet 122.

[0026] The high-temperature and high-humidity tail gas is dehumidified and preliminarily cooled by the setting of the condensation dehumidification tower 1, and is further cooled by the condenser 2 to obtain low-temperature tail gas. The first cooling liquid outlet 111 and the second cooling liquid outlet 222 are communicated with the residual liquid tank 3, and the return flow of the cooled residual liquid can reduce the temperature of the residual liquid in the residual liquid tank 3, thereby being beneficial to optimizing the condensation effect of the whole device. Further, the cooled residual liquid discharged from the first cooling liquid outlet 111 is transported to the residual liquid tank 3 by the second circulating pump; if the height of the second cooling liquid outlet 222 to the ground is higher than the height of the inlet of the residual liquid tank 3 to the ground, the return flow is by gravity, and if the former is lower than the latter, the third circulating pump is also needed to transport the cooled residual liquid to the residual liquid tank 3.

[0027] In order to optimize the dehumidification effect of the residual liquid tail gas, the dehumidification zone 11 is provided with a plurality of dehumidification layers 110 stacked along the air passing direction. The dehumidification layer 110 is provided with a gas-permeable channel in a mesh structure along the cross section of the layer thickness direction, and the gas-permeable channel communicates the bottom surface and the top surface of the dehumidification layer 110. The gas-permeable channel is provided in a mesh structure to prolong the residence time of the gas in the dehumidification zone 11, and a large amount of water vapor is retained in the dehumidification zone 11 to achieve the dehumidification effect.

[0028] The condensation zone 12 is provided with a spiral gas guide plate 100 extending along the air passing direction and a plurality of condensation pipes 1001. The condensation pipes 1001 are arranged in the spiral gas guide plate 100, one end of the condensation pipe 1001 is communicated with the top liquid inlet 121, and the other end is communicated with the bottom liquid outlet 122. The setting of the spiral gas guide plate 100 prolongs the residence time of the high-temperature tail gas in the condensation zone 12, and the cooling liquid flows to the bottom of the condensation dehumidification tower 1 through the inclined gas guide plate. Further, the spacing between adjacent condensation pipes 1001 is 2-3 cm, which is beneficial to the flow guiding of the high-temperature tail gas and ensures the condensation effect.

[0029] The outer edge of the spiral gas guide plate 100 is sealingly connected with the inner wall of the condensation dehumidification tower 1, the inner edge of the spiral gas guide plate 100 is rotatably and fixedly connected with the shaft core support rod 10, and the spiral gas guide plate 100 close to the dehumidification zone 11 is a bottom gas guide plate provided with a gas-permeable hole. The shaft core support rod 10 is fixedly connected with the condensation dehumidification tower 1, thereby stabilizing the spiral gas guide plate 100. The high-temperature tail gas after dehumidification is introduced into the curved gas guide channel formed by the spiral gas guide plate 100 through the gas-permeable hole of the bottom gas guide plate to complete the preliminary cooling.

[0030] A hot liquid receiving cavity 1202 is arranged between the dehumidification zone 11 and the condensation zone 12, the maximum outer diameter of the hot liquid receiving cavity 1202 is smaller than the inner diameter of the condensation and dehumidification tower 1, air guide through holes in communication with the air permeable holes are arranged between the outer wall of the hot liquid receiving cavity 1202 and the inner wall of the condensation and dehumidification tower 1, the hot liquid receiving cavity 1202 is in communication with the bottom liquid outlet 122, the bottom liquid outlet 122 is sequentially connected with the condensate storage tank 4 outside the tower and the first circulating pump 42, and the first circulating pump 42 is in communication with the top liquid inlet 121. Further, the caliber of the hot liquid receiving cavity 1202 gradually decreases from the condensation zone 12 to the dehumidification zone 11, that is, the bottom surface of the hot liquid receiving cavity 1202 is a slope, which is beneficial to the introduction of the dehumidified tail gas into the condensation zone 12 and the reflux of the water vapor along the slope to the dehumidification zone 11 and the bottom of the condensation and dehumidification tower 1. The maximum outer diameter of the hot liquid receiving cavity 1202 is smaller than the inner diameter of the condensation and dehumidification tower 1, and then there is a gap between the outer wall of the hot liquid receiving cavity 1202 and the inner wall of the condensation and dehumidification tower 1, the internal structure is not drawn, specifically, a support baffle is arranged between the dehumidification zone 11 and the condensation zone 12, which is used for the fixation of the spiral air guide plate 100, the root condensation pipe 1001 and the hot liquid receiving cavity 1202 and the condensation and dehumidification tower 1, the support baffle is provided with liquid guide holes corresponding to the root condensation pipe 1001 and in communication with the hot liquid receiving cavity 1202; the edge of the support baffle is provided with air guide through holes in communication with the air permeable holes. Further, the storage liquid in the condensate storage tank 4 is ethylene glycol aqueous solution. The temperature of the ethylene glycol aqueous solution is set to be-5 DEG C. Further, two first circulating pumps are arranged.

[0031] The top of the condensation zone 12 is provided with a cold liquid receiving cavity 1201, and the top gas outlet 102 is located below the cold liquid receiving cavity 1201 and in communication with the air guide channel surrounded by the spiral air guide plate 100.

[0032] The high-temperature and high-humidity tail gas is dehumidified and cooled and then transported to the subsequent catalytic oxidation process, and an induced draft fan 221 is further arranged, which is in communication with the condensation gas outlet 22.

[0033] The above only describes the preferred embodiments of the present application, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A device for cooling and dehumidifying the exhaust gas from high-temperature and high-humidity residual liquid in tank trucks, characterized in that, include: The condensation dehumidification tower includes a dehumidification zone and a condensation zone from bottom to top. It is provided with a bottom air inlet and a first coolant outlet located below the dehumidification zone and communicating with the residual liquid tank, and a top air outlet located above the condensation zone. The condenser is provided with a first air inlet communicating with the top air outlet, a condensate outlet and a second coolant outlet; The first coolant outlet and the second coolant outlet are connected to the inlet of the residual liquid tank; The condensation zone is equipped with a top liquid inlet and a bottom liquid outlet.

2. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 1, characterized in that, The dehumidification zone is provided with several dehumidification layers stacked along the ventilation direction. Each dehumidification layer has a mesh-structured ventilation channel in its cross-section along its thickness direction. The ventilation channel connects the bottom and top surfaces of the dehumidification layer.

3. The tank truck high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device according to claim 1 or 2, characterized in that, The condensation zone is provided with a spiral air guide plate extending along the ventilation direction and several condensation tubes. The condensation tubes pass through the spiral air guide plate, with one end of the condensation tube connected to the top liquid inlet and the other end connected to the bottom liquid outlet.

4. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 3, characterized in that, The outer edge of the spiral air guide plate is sealed to the inner wall of the condensation dehumidification tower. The inner edge of the spiral air guide plate rotates around the shaft support rod and is fixedly connected to it. The spiral air guide plate near the dehumidification area is the bottom air guide plate, and the bottom air guide plate is provided with air vents.

5. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 4, characterized in that, A hot liquid receiving chamber is provided between the dehumidification zone and the condensation zone. The maximum outer diameter of the hot liquid receiving chamber is smaller than the inner diameter of the condensation dehumidification tower. A venting hole communicating with the vent is provided between the outer wall of the hot liquid receiving chamber and the inner wall of the condensation dehumidification tower. The hot liquid receiving chamber is connected to the bottom liquid outlet. The bottom liquid outlet is sequentially connected to a condensate storage tank outside the tower and a first circulation pump. The first circulation pump is connected to the top liquid inlet.

6. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 3, characterized in that, The distance between adjacent condenser tubes is 2-3 cm.

7. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 3, characterized in that, The top of the condensation zone is provided with a cold liquid collection chamber, and the top air outlet is located below the cold liquid collection chamber and is connected to the air guiding channel surrounded by the spiral air guiding plate.

8. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 5, characterized in that, The storage liquid in the condensate storage tank is an aqueous solution of ethylene glycol.

9. The high-temperature and high-humidity residual liquid exhaust gas cooling and dehumidification device for tank trucks according to claim 1, characterized in that, An exhaust fan is also provided, which is connected to the condensate outlet.

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