Sewage station sludge drying tail gas peculiar smell treatment system

Abstract

The utility model provides a sewage station sludge drying tail gas odor treatment system which comprises a washing spray tower, a cyclone demister, a steam-water separation tank, a plurality of activated carbon adsorption towers and an exhaust cylinder which are sequentially communicated through pipelines, and the washing spray tower is provided with a waste gas channel externally connected with the self-drying device, and the waste gas channel is communicated with the washing spray tower. On the basis of original tail gas treatment, the concentration of peculiar smell factors is further reduced, the sensory degree of tail gas peculiar smell is reduced, the smell quality of surrounding air is improved, and the environment is improved.

Description

Technical Field

[0001] The utility model relates to an odor treatment system, in particular to an odor treatment system for sludge drying tail gas from a sewage station, and belongs to the technical field of chemical production. Background Art

[0002] The main process of the tail gas treatment system for the acrylic acid and butyl acrylate sludge drying system is as follows: the high-temperature tail gas after the sludge is dried at high temperature (drying temperature is 90-110℃) is discharged through a hydroxyl oxidation tower → UV catalytic photolysis device → water washing tower → chimney. After the tail gas treatment system, the emission indicators meet the emission requirements, but the olfactory senses can still smell the odor after drying, which is similar to dried seafood. This is because the discharged tail gas still contains odor factors with a low olfactory threshold that are easily smelled. Utility Model Content

[0003] Based on the above background, the purpose of the utility model is to provide a sewage treatment plant sludge drying exhaust gas odor control system that reduces the odor in the sludge drying exhaust gas and improves the olfactory quality of the surrounding air, thereby solving the problems described in the background technology.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0005] A sewage treatment plant sludge drying tail gas odor control system comprises a water washing spray tower, a cyclone demister, a steam-water separation tank, a plurality of activated carbon adsorption towers and an exhaust duct, wherein the water washing spray tower, the cyclone demister, the steam-water separation tank, a plurality of activated carbon adsorption towers and the exhaust duct are sequentially connected via pipelines, the water washing spray tower is provided with a waste gas channel externally connected to a self-drying device, and the waste gas channel is connected to the water washing spray tower.

[0006] The waste gas discharged from the drying device enters the water washing spray tower from the waste gas channel. The water washing spray tower can absorb the soluble odor factors in the waste gas, reduce the exhaust temperature, and reduce the volatilization of the odor factors. The waste gas passing through the water washing spray tower then passes through the cyclone demister and the steam-water separation tank in turn. The cooperation of the cyclone demister and the steam-water separation tank can perform two-stage water removal on the passing waste gas to ensure the subsequent treatment effect. The waste gas after water removal enters the activated carbon adsorption tower. The adsorption effect of the activated carbon adsorption tower absorbs the remaining odor factors in the waste gas, thereby achieving the purpose of reducing the odor and completing the treatment of the exhaust odor. Finally, the waste gas passing through the activated carbon adsorption tower is discharged from the exhaust pipe.

[0007] Preferably, a glass fiber reinforced plastic fan is arranged between the activated carbon adsorption tower and the exhaust chimney, and the glass fiber reinforced plastic fan is connected to the activated carbon adsorption tower and the exhaust chimney through a pipeline.

[0008] The FRP fan can promote the exhaust gas to reach the exhaust duct and be discharged.

[0009] Preferably, the water washing spray tower is provided with a water receiving channel for external industrial water, and the water receiving pipeline is connected to the water washing spray tower.

[0010] The water receiving channel is connected with the water washing spray tower, and can continuously supply water to the water washing spray tower to ensure that the water washing spray tower can fully play the role of absorbing odor factors in the exhaust gas.

[0011] Preferably, the exhaust pipe is provided with a sampling port with a pipe cap or a cover plate.

[0012] Through the sampling port, operators can obtain exhaust gas samples at any time and conduct analysis and testing, which helps to understand the exhaust gas treatment effect in a timely manner.

[0013] Preferably, the water washing spray tower is provided with a plurality of circulating water pumps, and the plurality of circulating water pumps are connected to the water washing spray tower via pipelines.

[0014] The circulating water pump can circulate the water in the water washing spray tower back to the water washing spray tower, ensuring the full utilization of water resources, thereby reducing water consumption, reducing operating costs, and being more environmentally friendly.

[0015] Preferably, a pressure gauge is provided on the pipeline connected to the circulating water pump, and the pressure gauge is connected to the portion of the pipeline.

[0016] The pressure gauge can reflect the water pressure in the pipeline in real time, help operators understand the system operation status, and adjust the working parameters of the circulating water pump in time, thus improving the reliability of the system and the convenience of operation.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The utility model discloses a sewage station sludge drying tail gas odor treatment system, which further reduces the concentration of odor factors on the basis of the original tail gas treatment, reduces the sensory degree of tail gas odor, improves the olfactory quality of surrounding air, and improves the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of a sewage station sludge drying tail gas odor treatment system of the utility model.

[0021] In the figure: 1. Water washing spray tower; 2. Cyclone demister; 3. Gas-water separation tank; 4. Activated carbon adsorption tower; 5. Exhaust duct; 6. Waste gas channel; 7. FRP fan; 8. Water connection channel; 9. Sampling port; 10. Circulating water pump; 11. Pressure gauge; 12. Industrial water pipe network; 13. Self-drying device. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0023] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0024] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0025] like Figure 1 As shown, a sewage treatment plant sludge drying tail gas odor control system comprises a water washing spray tower 1, a cyclone demister 2, a steam-water separation tank 3, several activated carbon adsorption towers 4 and an exhaust duct 5. The water washing spray tower 1, the cyclone demister 2, the steam-water separation tank 3, several activated carbon adsorption towers 4 and the exhaust duct 5 are sequentially connected through pipelines. The water washing spray tower 1 is provided with a waste gas channel 6 for an external self-drying device 13 and a water receiving channel 8 for an external industrial water. The waste gas channel 6 and the water receiving pipeline are both connected to the water washing spray tower 1.

[0026] The water receiving channel 8 of the water washing spray tower 1 is connected to industrial water, and the waste gas discharged from the drying device enters the water washing spray tower 1 from the waste gas channel 6. The water washing spray tower 1 can absorb the soluble odor factors in the waste gas, lower the exhaust gas temperature, and reduce the volatilization of the odor factors. The water receiving channel 8 is connected to the water washing spray tower 1, and water can be continuously supplied to the water washing spray tower 1 to ensure that the water washing spray tower 1 can fully play the role of absorbing odor factors in the waste gas.

[0027] The water washing spray tower 1 is provided with several circulating water pumps 10, and the several circulating water pumps 10 are connected to the water washing spray tower 1 through a pipeline. The circulating water pump 10 can circulate the water in the water washing spray tower 1 back to the water washing spray tower 1, ensuring the full utilization of water resources, thereby reducing water consumption, reducing operating costs, and being more environmentally friendly. A pressure gauge 11 is provided on the pipeline connected to the circulating water pump 10, and the pressure gauge 11 is connected to this part of the pipeline. The pressure gauge 11 can reflect the water pressure in the pipeline in real time, help the operator understand the operating status of the system, and adjust the working parameters of the circulating water pump 10 in time, thereby improving the reliability of the system and the convenience of operation.

[0028] The waste gas passing through the water washing spray tower 1 then passes through the cyclone demister 2 and the steam-water separation tank 3 in turn. The cooperation of the cyclone demister 2 and the steam-water separation tank 3 can perform two-stage water removal on the waste gas passing through to ensure the subsequent treatment effect. The waste gas after water removal enters the activated carbon adsorption tower 4. The adsorption effect of the activated carbon adsorption tower 4 absorbs the remaining odor factors in the waste gas, thereby achieving the purpose of reducing the odor and completing the treatment of the tail gas odor. Finally, the waste gas passing through the activated carbon adsorption tower 4 is discharged from the exhaust duct 5.

[0029] Among them, a glass fiber reinforced plastic fan 7 is arranged between the activated carbon adsorption tower 4 and the exhaust pipe, and the glass fiber reinforced plastic fan 7 is connected with the activated carbon adsorption tower 4 and the exhaust pipe through a pipeline. The glass fiber reinforced plastic fan 7 can promote the exhaust gas to reach the exhaust pipe 5 and be discharged.

[0030] The exhaust pipe is provided with a sampling port 9 with a pipe cap or a cover plate. Through the sampling port 9, the operator can obtain the exhaust gas sample at any time, and perform analysis and detection, which helps to timely understand the exhaust gas treatment effect.

[0031] The operating steps of the utility model of a sewage station sludge drying tail gas odor control system are as follows:

[0032] First, connect the water receiving channel 8 of the water washing spray tower 1 to industrial water, and then connect the output end of the external drying device to the exhaust gas channel 6 of the water washing spray tower 1. At this time, the exhaust gas discharged from the drying device enters the water washing spray tower 1 from the exhaust gas channel 6. The water washing spray tower 1 absorbs the soluble odor factors in the exhaust gas, lowers the exhaust gas temperature, and reduces the volatilization of the odor factors. The water receiving channel 8 continuously supplies water to the water washing spray tower 1 to ensure that the water washing spray tower 1 can fully play the role of absorbing the odor factors in the exhaust gas.

[0033] The waste gas passing through the water washing spray tower 1 then passes through the cyclone demister 2 and the steam-water separator 3 in turn. The cooperation of the cyclone demister 2 and the steam-water separator 3 can perform two-stage water removal on the waste gas passing through to ensure the subsequent treatment effect. The waste gas after water removal enters the activated carbon adsorption tower 4. The adsorption effect of the activated carbon adsorption tower 4 absorbs the remaining odor factors in the waste gas, and finally achieves the purpose of reducing the odor and completes the treatment of the tail gas odor. Finally, the waste gas passing through the activated carbon adsorption tower 4 is discharged from the exhaust duct 5.

[0034] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A sewage station sludge drying tail gas odor control system, characterized by: The sewage station sludge drying tail gas odor control system comprises a water washing spray tower (1), a cyclone demister (2), a steam-water separation tank (3), a plurality of activated carbon adsorption towers (4) and an exhaust duct (5), wherein the water washing spray tower (1), the cyclone demister (2), the steam-water separation tank (3), the plurality of activated carbon adsorption towers (4) and the exhaust duct (5) are sequentially connected through pipelines, and the water washing spray tower (1) is provided with a waste gas channel (6) of an external self-drying device (13), and the waste gas channel (6) is connected to the water washing spray tower (1).

2. The sewage treatment plant sludge drying tail gas odor control system according to claim 1, characterized in that: A glass fiber reinforced plastic fan (7) is arranged between the activated carbon adsorption tower (4) and the exhaust pipe, and the glass fiber reinforced plastic fan (7) is connected to the activated carbon adsorption tower (4) and the exhaust pipe through a pipeline.

3. The sewage treatment plant sludge drying tail gas odor control system according to claim 1, characterized in that: The water washing spray tower (1) is provided with a water receiving channel (8) for externally connecting industrial water, and the water receiving channel is in communication with the water washing spray tower (1).

4. The sewage station sludge drying tail gas odor control system according to claim 2 is characterized by: The exhaust pipe is provided with a sampling port (9) with a pipe cap or a cover plate.

5. The sewage treatment plant sludge drying tail gas odor control system according to claim 3 is characterized by: The water washing spray tower (1) is provided with a plurality of circulating water pumps (10), and the plurality of circulating water pumps (10) are connected to the water washing spray tower (1) through pipelines.

6. The sewage station sludge drying tail gas odor control system according to claim 5 is characterized by: A pressure gauge (11) is provided on the pipeline connected to the circulating water pump (10), and the pressure gauge (11) is communicated with the pipeline.

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