Chemical shipment tail gas treatment device

Abstract

The utility model discloses a chemical shipment tail gas treatment device which comprises an absorption tower, a circulation box, a circulation assembly, a heat exchange box and an absorption liquid conveying assembly, a gas inlet pipe is arranged at the front end of the absorption tower, the circulation box is arranged at the bottom of the absorption tower, the circulation assembly is arranged at the top end of the circulation box, and the heat exchange box is arranged on the right side of the circulation box. A box cover is hinged to the top end of the heat exchange box, a plurality of heat exchange pipes are arranged on the inner side of the heat exchange box, a tail gas pipe is arranged on the rear side of the heat exchange box, a conveying pipe is arranged at the front end of the heat exchange box and connected with an air inlet pipe flange, and an absorption liquid conveying assembly is arranged on the left side of the heat exchange box. Through the arrangement of the heat exchange box and the absorption liquid conveying assembly, under the condition that the use of the device is not affected, the effects of reducing the temperature of tail gas and increasing the temperature of absorption liquid are achieved, so that the absorption efficiency is improved, and meanwhile through the arrangement of the scraping assembly, the surface of the heat exchange pipe is convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of chemical ship exhaust gas treatment technology, specifically a chemical ship exhaust gas treatment device. Background Technology

[0002] In the chemical loading process, absorption towers (scrubbers) are commonly used devices for treating exhaust gases, especially suitable for water-soluble gases (such as NH3, H2S, HCl, SO2, etc.) or some soluble VOCs (such as methanol, acetone). Through gas-liquid contact (such as spraying, packed bed, or swirl plates), the absorbent (water or chemical solvent) physically dissolves or chemically reacts with the target pollutants in the exhaust gas, thereby transferring the pollutants from the gas phase to the liquid phase and achieving purification. However, high-temperature gases are inevitable in chemical loading exhaust gases. For example, chemicals that need to be heated before transport (such as molten sulfur, high-temperature asphalt) may have exhaust gas temperatures reaching around 100 degrees Celsius. Some chemicals (such as ethylene oxide) may cause the exhaust gas temperature to rise due to exothermic reactions. High-temperature exhaust gases are not easily absorbed by the absorbent, resulting in low treatment efficiency and certain shortcomings. Therefore, we propose a chemical loading exhaust gas treatment device. Utility Model Content

[0003] The present invention aims to solve the problems existing in the prior art or related technologies.

[0004] Therefore, the technical solution adopted by this utility model is as follows: a chemical ship exhaust gas treatment device, including an absorption tower, a circulation tank, a circulation component, a heat exchange box, and an absorbent liquid conveying component. An air inlet pipe is arranged at the front end of the absorption tower. The circulation tank is arranged at the bottom of the absorption tower. The circulation component is arranged at the top of the circulation tank. The heat exchange box is arranged on the right side of the circulation tank. A box cover is hinged to the top of the heat exchange box. Several heat exchange tubes are arranged inside the heat exchange box. An exhaust gas pipe is arranged at the rear of the heat exchange box. A conveying pipe is arranged at the front end of the heat exchange box. The conveying pipe is connected to the air inlet pipe flange. The absorbent liquid conveying component is arranged on the left side of the heat exchange box.

[0005] Preferably, the top of the absorption tower is provided with an exhaust pipe, and the interior of the absorption tower is provided with a spray device, a demister and a packing layer.

[0006] Preferably, the circulation assembly includes a circulation pipe installed on the absorption tower and the circulation tank, a circulation pump installed on the circulation pipe, and a first electric valve installed on the circulation pipe, wherein the circulation pipe is fixedly connected to the spraying device.

[0007] Preferably, the heat exchange box is provided with an inlet pipe for conveying the absorbent liquid at the front end and a drain pipe at the bottom.

[0008] Preferably, the absorbent delivery assembly includes a delivery pipe arranged on the left side of the heat exchange box, a delivery pump arranged on the delivery pipe, and a second electric valve arranged on the delivery pipe, wherein the delivery pipe is fixedly connected to the spraying device.

[0009] Preferably, it also includes a scraping assembly, which includes a support arranged outside the heat exchange tube, a sleeve arranged on the support, a scraper arranged outside the sleeve, and a handle arranged at the top of the support.

[0010] Preferably, a plurality of tube sleeves are provided, and each of the plurality of tube sleeves corresponds to a heat exchange tube.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows: the heat exchange box set in this utility model can store a certain amount of absorbent liquid, and the tail gas pipe can transport high-temperature tail gas into the heat exchange tube. Then, through heat transfer, the tail gas and absorbent liquid can exchange heat, thereby cooling the high-temperature tail gas and increasing the temperature of the absorbent liquid to improve the absorption efficiency. The handle of the scraping component can drive the support, sleeve and scraper to move along the outer wall of the heat exchange tube, thereby scraping off the scale on the outer wall of the heat exchange tube and avoiding the scale from affecting the heat exchange effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This utility model Figure 1 Schematic diagram of the structure of the intermediate heat exchanger;

[0014] Figure 3 This utility model Figure 1 A schematic diagram of the scraping component.

[0015] Figure label:

[0016] 100. Absorption tower; 101. Inlet pipe; 102. Exhaust pipe;

[0017] 200. Circulation box;

[0018] 300. Circulation assembly; 301. Circulation pipe; 302. Circulation pump; 303. First electric valve;

[0019] 400. Heat exchanger box; 401. Box cover; 402. Heat exchanger tube; 403. Exhaust pipe; 404. Delivery pipe; 405. Liquid inlet pipe; 406. Drain pipe;

[0020] 500. Absorbent liquid delivery assembly; 501. Pumping pipe; 502. Delivery pump; 503. Second electric valve;

[0021] 600. Scraping assembly; 601. Bracket; 602. Tube sleeve; 603. Scraper; 604. Handle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] The following describes some embodiments of this utility model with reference to the accompanying drawings, providing a chemical shipboard exhaust gas treatment device.

[0024] Example 1:

[0025] Reference Figure 1-3 This is the first embodiment of the present invention, which provides a chemical ship exhaust gas treatment device, including an absorption tower 100, a circulation tank 200, a circulation component 300, a heat exchange box 400, and an absorption liquid conveying component 500.

[0026] Specifically, the front end of the absorption tower 100 is provided with an air inlet pipe 101, the top end of the absorption tower 100 is provided with an exhaust pipe 102, and the interior of the absorption tower 100 is provided with a spray device, a demister and a packing layer. In use, the exhaust gas from chemical loading can be transported into the absorption tower 100 through the air inlet pipe 101, and the treated gas can be discharged through the exhaust pipe 102 to treat the exhaust gas from chemical loading.

[0027] Specifically, the circulation box 200 is located at the bottom of the absorption tower 100. During use, the circulation box 200 can store the absorbent liquid for absorbing the exhaust gas, so that it can be circulated and sprayed for absorption through the circulation component 300.

[0028] Specifically, the circulation component 300 is installed at the top of the circulation tank 200. The circulation component 300 includes a circulation pipe 301 installed on the absorption tower 100 and the circulation tank 200, a circulation pump 302 installed on the circulation pipe 301, and a first electric valve 303 installed on the circulation pipe 301. The circulation pipe 301 is fixedly connected to the spraying device. In use, the circulation pipe 301 can be opened by the first electric valve 303. After opening, the circulation pump 302 can transport the absorbent liquid in the circulation tank 200 to the spraying device through the circulation pipe 301 for circulation spraying absorption, thereby reducing costs.

[0029] Specifically, the heat exchange box 400 is located on the right side of the circulation box 200. A cover 401 is hinged to the top of the heat exchange box 400. Several heat exchange tubes 402 are arranged inside the heat exchange box 400. An exhaust pipe 403 is arranged at the rear of the heat exchange box 400. A conveying pipe 404 is arranged at the front of the heat exchange box 400, and the conveying pipe 404 is flanged to the inlet pipe 101. An inlet pipe 405 for conveying the absorbent liquid is arranged at the front of the heat exchange box 400. A drain pipe is arranged at the bottom of the heat exchange box 400. During use, the waste pipe 406 allows the absorbent liquid to be stored in the heat exchange box 400, and the heat exchange box 400 can be opened by rotating the cover 401. Waste can be discharged through the waste pipe 406 to clean the inside of the heat exchange box 400. Then, heat exchange can be carried out through several heat exchange tubes 402 to improve the absorption effect. Afterwards, the exhaust gas can be transported to several heat exchange tubes 402 through the exhaust gas pipe 403, and the exhaust gas after heat exchange can be transported to the absorption tower 100 through the conveying pipe 404 for absorption.

[0030] Specifically, the absorbent delivery assembly 500 is located on the left side of the heat exchange box 400. The absorbent delivery assembly 500 includes a delivery pipe 501 located on the left side of the heat exchange box 400, a delivery pump 502 located on the delivery pipe 501, and a second electric valve 503 located on the delivery pipe 501. The delivery pipe 501 is fixedly connected to the spraying device. In use, the delivery pipe 501 can be opened through the second electric valve 503. After opening, the delivery pump 502 can deliver the absorbent in the heat exchange box 400 to the spraying device through the delivery pipe 501 so as to spray and absorb the exhaust gas.

[0031] Example 2:

[0032] Reference Figure 1 and Figure 3 This is the second embodiment of the present invention, which differs from the first embodiment in that it further includes a scraping component 600. The scraping component 600 includes a support 601 arranged outside the heat exchange tube 402, a sleeve 602 arranged on the support 601, a scraper 603 arranged outside the sleeve 602, and a handle 604 arranged at the top of the support 601. There are several sleeves 602, and each sleeve 602 corresponds to a heat exchange tube 402. In use, the handle 604 can drive the support 601, sleeve 602 and scraper 603 along the direction of the heat exchange tube 402. The moving scraper 603 can scrape off the scale on the surface of the heat exchange tube 402 for cleaning, so as to avoid the scale affecting the heat exchange efficiency.

[0033] The working principle and usage process of this utility model are as follows: First, the inlet pipe 405 delivers the absorbent liquid into the heat exchange box 400 until the absorbent liquid submerges the heat exchange tubes 402. Then, the exhaust gas pipe 403 delivers the exhaust gas into the heat exchange tubes 402. After delivery, the exhaust gas and absorbent liquid can exchange heat, resulting in a decrease in exhaust gas temperature and an increase in absorbent liquid temperature. Then, the delivery pump 502 is started. The delivery pump 502, through the pumping pipe 501, delivers the absorbent liquid from the heat exchange box 400 to the spraying device, thus absorbing the exhaust gas. Then, the circulation pump 302 can be started and the first electric valve 303 can be opened. After opening, the circulation pump 302 can transport the waste liquid in the circulation tank 200 to the spray device for spraying through the circulation pipe 301, so that the spraying can be circulated. When there is scale on the surface of the heat exchange tube 402, first rotate to open the tank cover 401. After opening, you can hold the handle 604 and then move the bracket 601, the tube sleeve 602 and the scraper 603 through the handle 604. The moving scraper 603 will scrape off the scale on the surface of the heat exchange tube 402, so that it can be cleaned.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A chemical shipboard exhaust gas treatment device, characterized in that, include: An air inlet pipe (101) is provided at the front end of the absorption tower (100); A circulation tank (200) is located at the bottom of the absorption tower (100); A circulation assembly (300) is disposed at the top of the circulation box (200); A heat exchange box (400) is arranged on the right side of the circulation box (200). The top of the heat exchange box (400) is hinged to a box cover (401). Several heat exchange tubes (402) are arranged inside the heat exchange box (400). A tail gas pipe (403) is arranged on the rear side of the heat exchange box (400). A conveying pipe (404) is arranged at the front end of the heat exchange box (400). The conveying pipe (404) is connected to the flange of the inlet pipe (101). An absorbent delivery assembly (500) is arranged on the left side of the heat exchange box (400).

2. The chemical shipboard exhaust gas treatment device according to claim 1, characterized in that, The top of the absorption tower (100) is provided with an exhaust pipe (102), and the interior of the absorption tower (100) is provided with a spray device, a demister and a packing layer.

3. The chemical shipboard exhaust gas treatment device according to claim 1, characterized in that, The circulation assembly (300) includes a circulation pipe (301) arranged on the absorption tower (100) and the circulation tank (200), a circulation pump (302) arranged on the circulation pipe (301), and a first electric valve (303) arranged on the circulation pipe (301). The circulation pipe (301) is fixedly connected to the spraying device.

4. The chemical shipboard exhaust gas treatment device according to claim 1, characterized in that, The heat exchange box (400) is provided with an inlet pipe (405) for conveying the absorbent liquid at the front end, and a drain pipe (406) is provided at the bottom of the heat exchange box (400).

5. A chemical shipboard exhaust gas treatment device according to claim 1, characterized in that, The absorbent delivery assembly (500) includes a delivery pipe (501) arranged on the left side of the heat exchange box (400), a delivery pump (502) arranged on the delivery pipe (501), and a second electric valve (503) arranged on the delivery pipe (501). The delivery pipe (501) is fixedly connected to the spraying device.

6. The chemical shipboard exhaust gas treatment device according to claim 1, characterized in that, It also includes a scraping assembly (600), which includes a bracket (601) arranged outside the heat exchange tube (402), a tube sleeve (602) arranged on the bracket (601), a scraper (603) arranged outside the tube sleeve (602), and a handle (604) arranged at the top of the bracket (601).

7. A chemical shipboard exhaust gas treatment device according to claim 6, characterized in that, The tube sleeve (602) is provided in a plurality of units, and each of the tube sleeves (602) corresponds to a heat exchange tube (402).

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