Waste gas leaching device capable of recycling leacheate

Abstract

The utility model discloses a waste gas leaching device capable of recycling leacheate, which belongs to the technical field of waste gas leaching treatment and comprises a leaching tower body, a backflow guide pipe, a circulating guide pipe, a recycling guide pipe, a waste liquid treatment device and a liquid outlet pipe. A closed loop is formed by the leaching tower body, the backflow guide pipe and the circulating guide pipe, so that first circulation of leaching liquid is realized; another closed loop is formed by the leaching tower body, the recovery guide pipe, the waste liquid treatment device and the liquid outlet pipe, so that second circulation of the leaching liquid is realized. According to the utility model, the leacheate can be refluxed and reused for multiple times, the utilization efficiency of the leacheate is greatly improved, a waste liquid treatment device and the leaching tower can be effectively combined through skillfully arranging corresponding control valves through pipelines, the function of purifying the leacheate can be realized while the waste gas is leached, the efficiency of the leaching process is greatly improved, and the production cost is reduced. And the time cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of waste gas rinsing treatment, specifically relates to a waste gas rinsing device of recycling and recycling rinsing liquid. BACKGROUND

[0002] As a device for treating waste gas, the waste gas rinsing tower can effectively remove various pollutants such as particulate matter, acidic gas and organic matter in waste gas, and the removal efficiency can usually reach more than 90%, and is particularly suitable for treating complex waste gas containing various pollutants.

[0003] Compared with other advanced waste gas treatment equipment, the initial investment cost of the rinsing tower is relatively low, and it is suitable for small and medium-sized enterprises to use. Its operating cost is also relatively low, mainly consuming water and a small amount of chemical agents, and the maintenance cost is also low; the structure of the rinsing tower is compact, and the occupied area is small, which is suitable for installation and use in limited space, and water is used as the washing liquid, the cost of water is relatively low and the source is wide, and through recycling of the washing water, the water consumption and wastewater treatment cost can be further reduced.

[0004] However, a large amount of rinsing liquid is needed during the operation of the rinsing tower, especially when treating high-concentration waste gas, the liquid consumption is larger. In addition, the generated wastewater needs to be treated to avoid secondary pollution, which increases the overall operating cost.

[0005] Based on this, during the rinsing of waste gas in the rinsing tower, how to recycle the rinsing liquid multiple times to improve the utilization efficiency of the rinsing liquid has become a problem to be considered at present. UTILITY MODEL CONTENTS

[0006] In order to solve the problems in the background art, the purpose of the utility model is to provide a waste gas rinsing device capable of recycling and recycling rinsing liquid, which can recycle the rinsing liquid multiple times, greatly improve the utilization efficiency of the rinsing liquid, and is beneficial to reducing the cost of the rinsing process.

[0007] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A waste gas rinsing device capable of recycling and recycling rinsing liquid, comprising a rinsing tower body, a reflux conduit, a circulation conduit, a recycling conduit, a waste liquid treatment device and a liquid outlet pipe; the rinsing tower body and the reflux conduit and the circulation conduit form a closed loop to realize the first circulation of the rinsing liquid; the rinsing tower body and the recycling conduit, the waste liquid treatment device and the liquid outlet pipe form another closed loop to realize the second circulation of the rinsing liquid.

[0009] Further, the elution tower body comprises a purified gas outlet, a water vapor adsorption layer, a first elution pipe, a second elution pipe, a gas flow dispersion device, a waste gas outlet and a pipe fixing device; the purified gas outlet is arranged at the top end of the elution tower body.

[0010] Further, the water vapor adsorption layer is arranged at the upper end inside the elution tower body.

[0011] Further, the first elution pipe is arranged inside the elution tower body and below the water vapor adsorption layer.

[0012] Further, the first elution pipe is connected with a circulating pipe, and the bottom end of the first elution pipe is provided with a plurality of elution nozzles.

[0013] Further, the second elution pipe is arranged inside the elution tower body and below the first elution pipe.

[0014] Further, the second elution pipe is connected with a liquid outlet pipe, and the bottom end of the second elution pipe is provided with a plurality of elution nozzles.

[0015] Further, the return pipe is fixedly arranged at the bottom end of the elution tower body, and the circulating pipe is provided with a control valve a.

[0016] Further, the recovery pipe is fixedly arranged at the bottom end of the elution tower body, the recovery pipe is provided with a waste liquid discharge pipe, a control valve c and a second circulating pump, the waste liquid discharge pipe is located at the left side of the control valve c, and the waste liquid discharge pipe is provided with a control valve b.

[0017] Compared with the prior art, the elution tower has the following beneficial effects:

[0018] (1) The elution liquid can be recycled multiple times, the utilization efficiency of the elution liquid is greatly improved, the cost of the elution process is reduced, and the market competitiveness is improved.

[0019] (2) The waste liquid treatment device and the elution tower are effectively combined through the control valves corresponding to the ingenious pipeline and layout, the elution waste gas can be treated, and the elution liquid can be purified at the same time, the efficiency of the elution process is greatly improved, and the time cost is saved.

[0020] (3) The water vapor adsorption layer is additionally arranged on the basis of the elution process, the purified gas after elution can be further dried, and relatively dry purified gas is finally obtained.

[0021] (4) The pipe fixing device is arranged outside the bottom end of the elution tower body, a plurality of pipes can be fixed at the same time, the probability of operation accidents is reduced, and the stability and safety of the entire device operation are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic view of the utility model;

[0023] Figure 2 It is the structure schematic view of the airflow dispersing device of the utility model;

[0024] Figure 3 It is the structure schematic view of the water vapor adsorption layer of the utility model;

[0025] The figure mark is: 1, purified gas outlet;2, elution tower body;3, water vapor adsorption layer;4, control valve a;5, circulating conduit;6, airflow dispersing device;7, first circulating pump;8, backflow conduit;9, waste gas conduit;10, waste liquid discharge pipe;11, control valve b;12, control valve c;13, second circulating pump;14, recovery conduit;15, conduit fixing device;16, waste gas outlet;17, waste liquid treatment device;18, elution spray head;19, second elution pipe;20, liquid outlet pipe;21, control valve d;22 control valve e;23, liquid injection pipe;24, first elution pipe;301, flow guide layer;302, horizontal filter layer;601, main rod;602, airflow dispersing blade;603, support rod. DETAILED DESCRIPTION

[0026] The utility model is further illustrated below in combination with specific embodiments, and the embodiments are implemented on the premise of the technical scheme of the utility model, and it should be understood that these embodiments are only used for illustrating the utility model and not for limiting the scope of the utility model.

[0027] Please refer to the attached Figure 1 A waste gas elution device capable of recycling and utilizing elution liquid, comprising an elution tower body 2, a backflow conduit 8, a circulating conduit 5, a recovery conduit 14, a waste liquid treatment device 17 and a liquid outlet pipe 20;The backflow conduit 8 is arranged at the bottom end of the elution tower body 2, the other end of the backflow conduit 8 is connected with the circulating conduit 5, the other end of the circulating conduit 5 is arranged at the side of the elution tower body 2, the elution liquid flowing out of the elution tower body 2 is introduced into the elution tower body 2 again through the backflow conduit 8 and the circulating conduit 5, forming a first circulation;The recovery conduit 14 is arranged at the bottom end of the elution tower body 2, the other end of the recovery conduit 14 is provided with the waste liquid treatment device 17, the waste liquid treatment device 17 is connected with the side of the elution tower body 2 through the liquid outlet pipe 20, the elution liquid flowing out of the elution tower body 2 and to be recovered and treated is introduced into the waste liquid treatment device 17 through the recovery conduit 14, after being purified and treated in the waste liquid treatment device 17, the obtained elution liquid is introduced into the elution tower body 2 again through the liquid outlet pipe 20, forming a second circulation.

[0028] The elution tower body 2 comprises a purified gas outlet 1, a water vapor adsorption layer 3, a first elution pipe 24, a second elution pipe 19, an airflow dispersing device 6, a waste gas outlet 16 and a pipe fixing device 15. The purified gas outlet 1 is arranged at the top end of the elution tower body 2 and used for discharging the purified gas after being eluted by the elution liquid; the water vapor adsorption layer 3 is arranged at the upper end of the inner side of the elution tower body 2 and used for absorbing the residual moisture in the purified gas after being eluted by the elution liquid, so as to finally obtain dry purified gas; the first elution pipe 24 is arranged at the inner side of the elution tower body 2 and below the water vapor adsorption layer 3, the first elution pipe 24 is connected with the circulating pipe 5, and the bottom end of the first elution pipe 24 is provided with a plurality of elution nozzles 18; the elution liquid in the elution tower body 2 after being circulated and flowed back for the first time is sprayed downward by the elution nozzles 18 at the bottom end of the first elution pipe 24, so as to realize the elution treatment of the waste gas in the inner cavity of the elution tower body 2. The second elution pipe 19 is arranged at the inner side of the elution tower body 2 and below the first elution pipe 24, the second elution pipe 19 is connected with the liquid outlet pipe 20, and the bottom end of the second elution pipe 19 is also provided with a plurality of elution nozzles 18; the elution liquid in the elution tower body 2 after being circulated and flowed back for the second time is sprayed downward by the elution nozzles 18 at the bottom end of the second elution pipe 19, so as to continue to realize the elution treatment of the waste gas in the inner cavity of the elution tower body 2. The bottom end of the elution tower body 2 is provided with the airflow dispersing device 6 and the waste gas pipe 9 penetrating through the bottom end of the elution tower body 2, the waste gas pipe 9 is provided with the waste gas outlet 16 at the tail end, and the waste gas outlet 16 is located inside the airflow dispersing device 6 (i.e. the airflow dispersing device 6 completely covers around the waste gas outlet 16); when the waste gas enters the elution tower body 2 through the waste gas pipe 9, the waste gas is diffused outward through the waste gas outlet 16, the diffused waste gas is guided by the airflow dispersing device 6, forms airflow in multiple layers and different directions, so as to realize the uniform diffusion of the waste gas, which is beneficial to the sufficient contact with the elution liquid and improves the elution efficiency. The pipe fixing device 15 is fixedly arranged at the bottom end of the elution tower body 2 and outside, which can well fix various pipes connected with the elution tower body 2 and reduce the probability of operation accidents.

[0029] The backflow pipe 8 is fixedly arranged at the bottom end of the elution tower body 2, the first circulating pump 7 is arranged at the reinforcing extension end of the pipe fixing device 15, the first circulating pump 7 is arranged at the connection position of the backflow pipe 8 and the circulating pipe 5, and the control valve a 4 is arranged on the circulating pipe 5; when the control valve a 4 is opened, the elution liquid in the elution tower body 2 after being eluted can be pumped into the first elution pipe 24 through the backflow pipe 8 and the circulating pipe 5 by the operation of the first circulating pump 7, and then sprayed and released by the elution nozzles 18 at the bottom end of the first elution pipe 24, so as to realize the further elution of the waste gas.

[0030] The recovery conduit 14 is fixedly arranged at the bottom end of the elution tower body 2, and the recovery conduit 14 is provided with the waste liquid discharge pipe 10, the control valve c 12 and the second circulating pump 13 between the elution tower body 2 and the waste liquid treatment device 17. The waste liquid discharge pipe 10 is located at the left side of the control valve c 12, and the waste liquid discharge pipe 10 is provided with the control valve b 11. The other end of the waste liquid treatment device 17 is provided with the liquid outlet pipe 20 connected with the elution tower body 2, and the liquid outlet pipe 20 is provided with the liquid injection pipe 23 and the control valve d 21. The liquid injection pipe 23 is arranged between the control valve d 21 and the elution tower body 2, and the liquid injection pipe 23 is provided with the control valve e 22. When the elution waste liquid to be recovered and treated flows out of the elution tower body 2 through the recovery conduit 14, the control valve b 11 and the control valve e 22 are closed, and the control valve c 12 and the control valve d 21 are opened. The elution waste liquid is introduced into the waste liquid treatment device 17 under the operation of the second circulating pump 13, and the elution waste liquid is purified by the waste liquid treatment device 17. The elution liquid is introduced into the second elution pipe 19 through the liquid outlet pipe 20, and is sprayed and released by the elution spray head 18 at the bottom end of the second elution pipe 19, so as to realize the recovery and reuse of the elution waste liquid.

[0031] Please refer to the accompanying drawings Figure 2 The airflow dispersing device 6 includes a main rod 601, airflow dispersing blades 602 and a support rod 603. The support rod 603 can be fixed to the elution tower body 2 by welding or strong adhesion, and the height of the support rod 603 is slightly higher than the waste gas outlet 16, so as to support the airflow dispersing blades 602. The main rod 601 is fixedly arranged at the center of the airflow dispersing blades 602, mainly bears the airflow dispersing blades 602 and provides fixed airflow spacing. The airflow dispersing blades 602 are composed of a plurality of circular ring-shaped sub-blades with different upper and lower bottom perimeters (corresponding to trapezoidal sub-blades with different upper and lower side lengths in Figure 2 The upper bottom perimeter of each circular ring is smaller than the lower bottom perimeter of the circular ring above, so as to form a tower structure, which can well disperse airflow and effectively prevent the elution liquid from falling into the waste gas conduit 9 from the waste gas outlet 16, thereby avoiding accidents.

[0032] Please refer to the accompanying drawings Figure 3The water vapor adsorption layer 3 is composed of two upper and lower flow guide layers 301 and a horizontal filter layer 302 located between the two upper and lower flow guide layers 301, wherein the flow guide layer 301 is composed of a plurality of groups of adsorption sponges with equal intervals, and a flow guide aperture with an equal interval is formed between every two groups of adsorption sponges, so that the airflow can fully and uniformly contact each group of adsorption sponges when passing through; the two upper and lower flow guide layers 301 are arranged in a staggered manner, which can effectively prolong the time of the airflow in the water vapor adsorption layer 3 and improve the adsorption efficiency. The horizontal filter layer 302 is composed of an activated carbon network, which can block most of the water vapor when the purified gas after elution passes through, reduce the adsorption pressure of the flow guide layer 301, and improve the adsorption efficiency of the entire water vapor adsorption layer 3.

[0033] The working principle of the utility model is as follows: when the whole waste gas elution device is put into use, first, close control valve b 11, control valve c 12 and control valve d 21, open control valve a 4 and control valve e 22, inject elution liquid into injection pipe 23, guide into second elution pipe 19 through liquid outlet pipe 20, release by elution nozzle 18 at the bottom end of second elution pipe 19; at this time, the waste gas to be eluted is guided into waste gas outlet 16 by waste gas guide pipe 9 and released, the waste gas released at waste gas outlet 16 will first pass through airflow dispersing device 6, in airflow dispersing device 6, the waste gas will be shunted and diffused outward from the gap between every two adjacent airflow dispersing blades 602, forming a plurality of upward airflows in different directions, greatly improving the dispersion uniformity of the airflow. The upward airflow will fully contact the elution liquid released from elution nozzle 18 in elution tower body 2, the elution liquid will adsorb and react with the impurities remaining in the waste gas, remove the residual impurities in the waste gas, and purify the airflow. The purified airflow will continue to diffuse upward and reach water vapor adsorption layer 3 above first elution pipe 24, in water vapor adsorption layer 3, the upward airflow fully contacts the adsorption sponge in flow guide layer 301, the adsorption sponge can effectively absorb the moisture in the airflow, and finally obtain relatively dry purified gas, the dried purified gas is discharged outward from purified gas outlet 1, meeting the environmental standards. Because a large amount of elution liquid is released from top to bottom, a lot of elution liquid often does not fully contact the waste gas or fully contacts the residual components in the waste gas, if the elution liquid is directly discharged, it will cause serious waste and is not conducive to reducing the cost of the elution process. Therefore, start first circulating pump 7, the elution liquid after eluting the waste gas will gather at the bottom of elution tower 1 under the action of gravity, at this time, the elution liquid will be guided into backflow guide pipe 8 by the operation of the first circulating pump, then backflow to first elution pipe 24 in elution tower body 2 through circulating guide pipe 5, and release from elution nozzle 18 at the bottom end of first elution pipe 24, completing the circulation of the elution liquid, greatly improving the utilization rate of the elution liquid.

[0034] With the elution, more and more waste gas can be purified, at this time, the eluent after multiple recycling, the effective ingredient content decreases sharply, at this time, the eluent gathered in the bottom of the elution tower body 1 has not in suitable to continue to elution of waste gas. In order to maintain the elution efficiency, at this time, the control valve c 12 and control valve d21 are opened, the control valve b 11 is closed, the second circulating pump 13 is started, the eluent gathered in the bottom of the elution tower body 1 is introduced into the waste liquid treatment device 17 through the recovery pipe 14, the purification of the eluent is completed in the waste liquid treatment device 17, the purified eluent is returned into the second elution pipe 19 by the liquid outlet pipe 20, is released through the elution nozzle 18 at the bottom end of the second elution pipe 19, realizes the recycling-purification-reuse process of the eluent, greatly improves the economy and environmental protection of the whole process, reduces the dependence on new injection of eluent, further improves the elution efficiency.

[0035] When the waste gas elution is finished, the control valve b 11 is opened, all the eluent gathered in the bottom of the elution tower body 2 is introduced into the waste liquid discharge pipe 10 through the recovery pipe 14, and is discharged outward through the waste liquid discharge pipe 10; when the eluent is discharged, all the valves and circulating pumps are opened, the washing liquid or water is injected into the system through the liquid injection pipe 23, the washing of the whole device is completed, finally, the washing liquid is discharged through the waste liquid discharge pipe 10, and the washing and cleaning of the whole device are completed.

[0036] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An exhaust gas rinsing device capable of recycling a rinsing liquid, characterized by comprising: The elution tower body (2), the reflux conduit (8), the circulation conduit (5), the recovery conduit (14), the waste liquid treatment device (17) and the liquid outlet pipe (20); the elution tower body (2) forms a closed loop with the reflux conduit (8) and the circulation conduit (5), realizing the first circulation of the elution liquid; the elution tower body (2) forms another closed loop with the recovery conduit (14), the waste liquid treatment device (17) and the liquid outlet pipe (20), realizing the second circulation of the elution liquid.

2. The exhaust gas rinsing device of claim 1, wherein The elution tower body (2) includes a purified gas outlet (1), a water vapor adsorption layer (3), a first elution pipe (24), a second elution pipe (19), a gas flow dispersion device (6), a waste gas outlet (16) and a conduit fixing device (15); the purified gas outlet (1) is arranged at the top end of the elution tower body (2).

3. The device for washing exhaust gas according to claim 2, wherein The water vapor adsorption layer (3) is arranged at the upper end of the inner side of the elution tower body (2).

4. The device for washing exhaust gas according to claim 2, wherein The first elution pipe (24) is arranged at the inner side of the elution tower body (2) and below the water vapor adsorption layer (3).

5. The device for washing exhaust gas according to claim 2, wherein The first elution pipe (24) is connected with the circulation conduit (5), and the bottom end of the first elution pipe (24) is provided with a plurality of elution nozzles (18).

6. The device for washing exhaust gas according to claim 2, wherein The second elution pipe (19) is arranged at the inner side of the elution tower body (2) and below the first elution pipe (24).

7. The device for washing exhaust gas according to claim 2, wherein The second elution pipe (19) is connected with the liquid outlet pipe (20), and the bottom end of the second elution pipe (19) is provided with a plurality of elution nozzles (18).

8. The device for washing exhaust gas according to claim 1, wherein The reflux conduit (8) is fixedly arranged at the bottom end of the elution tower body (2), and the control valve a (4) is arranged on the circulation conduit (5).

9. The device for washing exhaust gas according to claim 1, wherein The recovery conduit (14) is fixedly arranged at the bottom end of the elution tower body (2), and the waste liquid discharge pipe (10), the control valve c (12) and the second circulation pump (13) are arranged on the recovery conduit (14); the waste liquid discharge pipe (10) is located at the left side of the control valve c (12), and the control valve b (11) is arranged on the waste liquid discharge pipe (10).

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