Alkali washing tower for asphalt tail gas treatment

Abstract

The utility model relates to the technical field of asphalt tail gas treatment, in particular to an asphalt tail gas treatment alkaline washing tower which comprises a tower body, a gas inlet is fixedly connected to the bottom of the left side of the tower body, a control valve is fixedly assembled at the front end of the gas inlet, a gas outlet is fixedly connected to the top end of the tower body, and an alkaline washing assembly is arranged at the bottom of the tower body. According to the utility model, the alkaline washing component is arranged in the alkaline washing tower for asphalt tail gas treatment, and the motor in the component works to drive the rotating shaft and the rotating rod to rotate so as to further drive the stirring shaft to rotate and stir, so that tail gas and alkaline liquid are fully mixed and reacted; the alkaline liquid in the liquid storage tank is guided into the liquid separation plate through the liquid extraction pump and is sprayed through the spray heads, so that the reaction is more sufficient, the sprayed alkaline liquid falls into the alkaline washing bin, the effects that the tail gas and the alkaline liquid are mixed more uniformly and the reaction is more sufficient are achieved, and the asphalt tail gas treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt tail gas treatment, in particular to an asphalt tail gas treatment alkali washing tower. Background Art

[0002] In the process of asphalt tail gas treatment, the asphalt tail gas needs to be heated and transported to various asphalt tail gas treatment equipment for tail gas treatment. Asphalt tail gas contains a variety of organic matter, including carbocyclic hydrocarbons, cyclic hydrocarbon derivatives and other compounds, many of which are harmful to human health. Among them, the alkali washing tower is a device for asphalt tail gas treatment. The alkali washing tower is usually used to treat asphalt vapor, volatile organic matter and other harmful gases, and convert them into harmless substances to meet the requirements of environmental protection. The tail gas treated by the alkali washing tower can meet the relevant emission standards and reduce the harm to the environment and human body.

[0003] The existing alkali washing tower introduces the exhaust gas directly into the alkaline liquid through an air duct. The structure is simple, and the reaction between the exhaust gas and the alkaline liquid is not sufficient, resulting in unsatisfactory exhaust gas treatment results. At the same time, the concentration of the alkaline liquid will decrease after the exhaust gas is continuously introduced, and the bottom reaction will also produce sediment, which is inconvenient to clean and will also affect the effect of the exhaust gas treatment. Therefore, an asphalt exhaust gas treatment alkali washing tower is needed to improve the above problems. Utility Model Content

[0004] The utility model aims to provide an alkali washing tower for treating asphalt tail gas, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An alkali washing tower for treating asphalt tail gas comprises a tower body, wherein an air inlet is fixedly connected to the bottom left side of the tower body, a control valve is fixedly installed at the front end of the air inlet, an air outlet is fixedly connected to the top of the tower body, an alkali washing assembly is arranged at the bottom of the tower body, the alkali washing assembly comprises a liquid storage tank arranged on the right side of the tower body, a liquid pump is installed at the top of the liquid storage tank, the right side of the liquid pump is communicated with the liquid storage tank through a liquid guide tube, a liquid separation plate is fixedly connected to the left side of the liquid pump through a liquid discharge pipe, a nozzle is fixedly installed at the bottom of the liquid separation plate, an alkali washing bin is arranged at the inner bottom end of the tower body, an alkaline liquid is arranged inside the alkali washing bin, a pH detector is fixedly installed at the bottom of the tower body, a waterproof cover is fixedly connected to the middle part of the liquid separation plate, a motor is installed inside the waterproof cover, a rotating shaft is drivingly connected to the output end of the motor, an internal thread block is fixedly connected to the bottom of the rotating shaft, the internal thread block is threadedly connected to a rotating rod through an external thread, a stirring shaft is fixedly connected to the surface of the rotating rod, and a scraper is fixedly connected to the bottom of the rotating rod.

[0007] As a preferred solution of the utility model, the top of the liquid separation plate is fixedly connected to a clean water tank, the left side of the clean water tank is fixedly connected to a return pipe, the left side of the return pipe is connected to the top of the alkali washing tank, and the right side of the return pipe is connected to the bottom of the clean water tank.

[0008] As a preferred solution of the utility model, a placement rack is fixedly connected to a position near the top of the tower body, and activated carbon is arranged on the top of the placement rack.

[0009] As a preferred solution of the utility model, a sewage outlet is fixedly connected to the bottom of the tower body, and a sewage valve is arranged at the front end of the sewage outlet.

[0010] As a preferred solution of the present invention, there are several stirring shafts, and the stirring shafts are arranged in a ring array.

[0011] As a preferred solution of the utility model, the bottom of the tower body is fixedly connected with support columns, and the number of the support columns is four.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, an alkali washing component is arranged in the alkali washing tower for treating asphalt tail gas, and the motor in the component is used to drive the rotating shaft and the rotating rod to rotate, and further drive the stirring shaft to rotate and stir, so that the tail gas and the alkaline liquid are fully mixed and reacted. When the pH detector detects that the alkalinity of the alkaline liquid is insufficient, the alkaline liquid in the liquid storage tank is introduced into the liquid separation plate through the liquid pump, and sprayed through the nozzle, the reaction is more sufficient, and the sprayed alkaline liquid will fall into the alkali washing bin, so as to achieve the effect of making the mixing of the tail gas and the alkaline liquid more uniform and the reaction more sufficient, thereby improving the effect of asphalt tail gas treatment.

[0014] 2. In the utility model, the motor in the asphalt tail gas treatment alkali washing tower drives the rotating shaft and the rotating rod to rotate and drive the scraper to sweep the sediment reacted at the bottom of the tower body, and discharge it out of the tower body through the sewage valve and the sewage outlet, so as to achieve the purpose of cleaning the sediment reacted under the tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of the utility model.

[0018] In the figure: 1. tower body; 101. air inlet; 102. control valve; 103. air outlet; 104. drain valve; 105. drain outlet; 106. support column; 2. alkali cleaning component; 201. liquid storage tank; 202. liquid suction pump; 203. liquid guide tube; 204. liquid discharge pipe; 205. liquid separation plate; 206. nozzle; 207. alkali cleaning bin; 208. alkaline liquid; 209. pH detector; 210. waterproof cover; 211. motor; 212. rotating shaft; 213. internal thread block; 214. external thread; 215. rotating rod; 216. stirring shaft; 217. scraper; 3. clean water bin; 302. return pipe; 303. placement rack; 304. activated carbon. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Example: See Figure 1-3The asphalt tail gas treatment alkali washing tower shown in the figure comprises a tower body 1, an air inlet 101 is fixedly connected to the bottom of the left side of the tower body 1, a control valve 102 is fixedly installed at the front end of the air inlet 101, an air outlet 103 is fixedly connected to the top of the tower body 1, an alkali washing assembly 2 is arranged at the bottom of the tower body 1, and the alkali washing assembly 2 comprises a liquid storage tank 201 arranged on the right side of the tower body 1, a liquid pump 202 is installed at the top of the liquid storage tank 201, the right side of the liquid pump 202 is connected to the liquid storage tank 201 through a liquid guide tube 203, and the left side of the liquid pump 202 is connected to the liquid storage tank 201 through a liquid guide tube 203. The discharge pipe 204 is fixedly connected with a liquid separation plate 205, and a nozzle 206 is fixedly installed at the bottom of the liquid separation plate 205. An alkali washing bin 207 is provided at the bottom end of the tower body 1, and an alkaline liquid 208 is provided inside the alkali washing bin 207. A pH detector 209 is fixedly installed at the bottom of the tower body 1. A waterproof cover 210 is fixedly connected to the middle of the liquid separation plate 205, and a motor 211 is installed inside the waterproof cover 210. The output end of the motor 211 is transmission-connected with a rotating shaft 212, and the bottom of the rotating shaft 212 is fixedly connected with an internal thread block 213. The internal thread block 213 is threadedly connected to a rotating rod 215 through an external thread 214, a stirring shaft 216 is fixedly connected to the surface of the rotating rod 215, and a scraper 217 is fixedly connected to the bottom of the rotating rod 215; when in use, the operator introduces tail gas into the alkaline washing bin 207 through the air inlet 101 and the control valve 102, and then turns on the motor 211 to drive the rotating shaft 212 and the rotating rod 215 to rotate, further driving the stirring shaft 216 to rotate and stir, so that the tail gas and the alkaline liquid 208 are fully mixed and reacted. When the pH detector 209 detects When it is detected that the alkalinity of the alkaline liquid 208 is insufficient, the alkaline liquid in the liquid storage tank 201 is introduced into the liquid separation plate 205 through the liquid pump 202, and sprayed through the nozzle 206, so that the reaction is more complete. The sprayed alkaline liquid 208 will fall into the alkaline washing bin 207, so that the exhaust gas and the alkaline liquid 208 are mixed more evenly and the reaction is more complete, thereby improving the effect of asphalt exhaust gas treatment. The threaded connection of the internal thread block 213 and the external thread 214 facilitates the disassembly and maintenance of the rotating rod 215, the stirring shaft 216, and the scraper 217.

[0024] In this embodiment, refer to Figure 2 As shown, the top of the liquid separation plate 205 is fixedly connected to the clean water tank 3, and the left side of the clean water tank 3 is fixedly connected to the return pipe 302, the left side of the return pipe 302 is connected to the top of the alkali washing tank 207, and the right side of the return pipe 302 is connected to the bottom of the clean water tank 3; when in use, the exhaust gas treated by the alkali washing tank 207 is introduced into the clean water tank 3 through the return pipe 302, and is further purified, thereby improving the treatment effect of the asphalt exhaust gas.

[0025] In this embodiment, refer to Figure 2As shown, a placement rack 303 is fixedly connected to the interior of the tower body 1 near the top, and activated carbon 304 is arranged on the top of the placement rack 303; when in use, the activated carbon 304 finally adsorbs the toxic substances, moisture and odor in the exhaust gas, so as to achieve a better treatment effect of the asphalt exhaust gas.

[0026] In this embodiment, refer to Figure 1 and 2 As shown, a sewage outlet 105 is fixedly connected to the bottom of the tower body 1, and a sewage valve 104 is arranged at the front end of the sewage outlet 105; when in use, the sewage outlet 105 and the sewage valve 104 cooperate to discharge the waste liquid and sediment after the alkaline washing reaction.

[0027] In this embodiment, refer to Figure 2 and 3 As shown, there are a plurality of stirring shafts 216 , which are arranged in a circular array. When in use, the plurality of stirring shafts 216 cooperate to achieve a more complete stirring and mixing effect.

[0028] In this embodiment, refer to Figure 1 As shown, the bottom of the tower body 1 is fixedly connected with support columns 106 , and the number of support columns 106 is four; when in use, the support columns 106 support the tower body 1 .

[0029] Working principle: When in use, the operator introduces tail gas into the alkaline washing bin 207 through the air inlet 101 and the control valve 102, and then turns on the motor 211 to drive the rotating shaft 212 and the rotating rod 215 to rotate and further drive the stirring shaft 216 to rotate and stir, so that the tail gas and the alkaline liquid 208 are fully mixed and reacted. When the pH detector 209 detects that the alkaline liquid 208 is insufficiently alkaline, the alkaline liquid 208 in the liquid storage tank 201 is introduced into the liquid separation plate 205 through the liquid pump 202, and sprayed through the nozzle 206, the reaction is more complete, The sprayed alkaline liquid 208 will fall into the alkaline washing bin 207, achieving the effect of making the exhaust gas and the alkaline liquid 208 mix more evenly and react more fully, thereby improving the effect of asphalt exhaust gas treatment. At the same time, it drives the scraper 217 to sweep the reacted sediments at the bottom of the tower body 1, and discharges them outside the tower body 1 through the drain valve 104 and the drain port 105, so as to achieve the purpose of cleaning the reacted sediments under the tower body 1. The threaded connection of the internal thread block 213 and the external thread 214 facilitates the disassembly and maintenance of the rotating rod 215, the stirring shaft 216, and the scraper 217.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt tail gas treatment alkali washing tower, comprising a tower body (1), characterized in that: An air inlet (101) is fixedly connected to the bottom of the left side of the tower body (1), a control valve (102) is fixedly mounted at the front end of the air inlet (101), an air outlet (103) is fixedly connected to the top of the tower body (1), and an alkali washing assembly (2) is arranged at the bottom of the tower body (1); The alkali washing assembly (2) comprises a liquid storage tank (201) arranged on the right side of the tower body (1); a liquid pump (202) is installed on the top of the liquid storage tank (201); the right side of the liquid pump (202) is connected to the liquid storage tank (201) through a liquid guide tube (203); the left side of the liquid pump (202) is fixedly connected to a liquid separation plate (205) through a liquid discharge tube (204); a nozzle (206) is fixedly installed at the bottom of the liquid separation plate (205); an alkali washing chamber (207) is arranged at the bottom end of the interior of the tower body (1); an alkaline liquid (208) is arranged inside the alkali washing chamber (207); the tower body (1) A pH detector (209) is fixedly mounted on the bottom of the liquid separation plate (205); a waterproof cover (210) is fixedly connected to the middle of the liquid separation plate (205); a motor (211) is installed inside the waterproof cover (210); an output end of the motor (211) is drivingly connected to a rotating shaft (212); an internal thread block (213) is fixedly connected to the bottom of the rotating shaft (212); the internal thread block (213) is threadedly connected to a rotating rod (215) via an external thread (214); a stirring shaft (216) is fixedly connected to the surface of the rotating rod (215); and a scraper (217) is fixedly connected to the bottom of the rotating rod (215).

2. The asphalt tail gas treatment alkali washing tower according to claim 1, characterized in that: The top of the liquid separation plate (205) is fixedly connected to a clean water tank (3), the left side of the clean water tank (3) is fixedly connected to a return pipe (302), the left side of the return pipe (302) is connected to the top of the alkali washing tank (207), and the right side of the return pipe (302) is connected to the bottom of the clean water tank (3).

3. The asphalt tail gas treatment alkali washing tower according to claim 1, characterized in that: A placement rack (303) is fixedly connected to a position near the top of the tower body (1), and activated carbon (304) is arranged on the top of the placement rack (303).

4. The asphalt tail gas treatment alkali washing tower according to claim 1, characterized in that: The bottom of the tower body (1) is fixedly connected with a sewage outlet (105), and a sewage valve (104) is arranged at the front end of the sewage outlet (105).

5. The asphalt tail gas treatment alkali washing tower according to claim 1, characterized in that: The number of the stirring shafts (216) is multiple, and the stirring shafts (216) are arranged in a ring array.

6. The asphalt tail gas treatment alkali washing tower according to claim 1, characterized in that: The bottom of the tower body (1) is fixedly connected with a support column (106), and the number of the support columns (106) is four.

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