Industrial waste gas treatment device applied to ABS (Acrylonitrile Butadiene Styrene) resin production device

Abstract

The utility model relates to the technical field of industrial waste gas treatment devices, in particular to an industrial waste gas treatment device applied to an ABS (Acrylonitrile Butadiene Styrene) resin production device. Comprising a box body, an industrial waste gas inlet is formed in the upper portion of the side wall of the box body, a purified gas outlet is formed in the lower portion of the side wall of the box body, and an induced draft fan is arranged on the purified gas outlet; a spraying water collecting plate for dividing the inner space of the box body is arranged in an inner cavity of the box body, an area above the spraying water collecting plate is a spraying area, and a spraying water filtering bin body and a gas filtering bin body are respectively arranged in an area below the spraying water collecting plate. According to the technical scheme, efficient treatment of industrial waste gas and recycling of spraying water are realized; the technical problems that in the prior art, an industrial waste gas treatment device applied to an ABS resin production device is insufficient in industrial waste gas treatment capacity and low in treatment efficiency, and waste water generated after the industrial waste gas is flushed is not effectively utilized are effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial waste gas treatment devices, specifically to an industrial waste gas treatment device applied to an ABS resin production plant. Background Technology

[0002] ABS resin is a terpolymer of acrylonitrile (A), butadiene (B), and styrene (S). It combines the properties of the three components. A makes it resistant to chemical corrosion and heat, and has a certain surface hardness. B gives it high elasticity and toughness. S gives it the processing and molding characteristics of thermoplastics and improves its electrical properties. The properties of these three components make ABS resin a thermoplastic with good comprehensive performance, characterized by "strong texture, toughness, and high rigidity". Therefore, ABS resin has been widely used in manufacturing industries such as machinery, electrical, textile, automotive, aircraft, and shipbuilding, as well as in the chemical industry.

[0003] ABS resin production facilities generate a large amount of industrial waste gas during processing. Direct emission of this gas would cause serious environmental pollution, necessitating the use of industrial waste gas treatment equipment for filtration. Existing industrial waste gas treatment equipment primarily utilizes water spraying to wash the waste gas, thereby separating impurities. However, the above-mentioned technical solutions suffer from the following technical problems in practical application:

[0004] First, the capacity for treating industrial waste gas is insufficient and the treatment efficiency is low. Even after treatment, the gas still contains a large number of pollutants, and the cleanliness of the gas is not high.

[0005] Secondly, the direct discharge of the gas and wastewater mixture generated after rinsing without effective separation not only prevents the proper recycling of wastewater resources but also leads to the unnecessary waste of water resources.

[0006] Therefore, in order to solve the above-mentioned technical problems, this application proposes an industrial waste gas treatment device for use in ABS resin production equipment. Utility Model Content

[0007] This utility model provides an industrial waste gas treatment device for ABS resin production equipment, which aims to solve the problems of insufficient treatment capacity of existing technology for industrial waste gas and the lack of proper recycling of wastewater resources.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] This utility model provides an industrial waste gas treatment device for ABS resin production equipment, comprising: a housing, an industrial waste gas inlet provided on the upper part of the side wall of the housing, a purified gas outlet provided on the lower part of the side wall of the housing, and an induced draft fan provided on the purified gas outlet;

[0010] The inner cavity of the box is provided with a spray water collection plate that divides its internal space. The area above the spray water collection plate is the spray area, and the area below the spray water collection plate is provided with a spray water filter chamber and a gas filter chamber, respectively.

[0011] The top of the spray water filtration chamber is fixedly connected to the spray area via a collection pipe, and a switch valve is installed on the collection pipe; the top of the spray water filtration chamber is fixedly connected to the top of the gas filtration chamber via a gas channel, and a switch valve and a demister are sequentially installed along the direction from the spray water filtration chamber to the gas filtration chamber.

[0012] A spray tube bundle is provided at the top of the spray area, and a number of nozzles are provided on the spray tube bundle.

[0013] The spray water filtration chamber is provided with a spray water filtration layer. The bottom of the spray water filtration chamber is fixedly connected to the spray pipe bundle through the spray main pipe. A circulating water pump is provided on the spray main pipe.

[0014] The gas filter chamber is provided with a first gas filter layer and a second gas filter layer, which are detachably arranged from top to bottom. Two differential pressure gauge ports are provided on the side wall of the gas filter chamber for installing differential pressure gauges.

[0015] Furthermore, the enclosure is equipped with an inspection door.

[0016] Furthermore, an inspection ladder is provided on the spray water filtration chamber.

[0017] Furthermore, the spray water filter layer includes a support mesh, a gravel layer, a coarse sand layer, and a fine sand layer arranged sequentially from bottom to top.

[0018] Furthermore, the demister is a gas-phase wire mesh demister.

[0019] Furthermore, a three-way valve is provided on the main spray pipe, and another outlet of the three-way valve is connected to a backwash inlet; a drain outlet is provided on the upper side wall of the spray water filter chamber, and both the backwash inlet and the drain outlet are equipped with on / off valves.

[0020] Furthermore, a float level gauge is provided in the lower middle part of the spray water filtration chamber, and a water inlet is provided in the lower middle part of the side wall of the spray water filtration chamber.

[0021] The beneficial effects achieved by this utility model are as follows:

[0022] This invention employs a technical solution that separately sets up a spray area, a spray water filtration chamber, and a gas filtration chamber inside the device's housing. The spray tube bundle within the spray area washes the industrial waste gas, removing large particulate impurities. Further, the gas and wastewater are separated within the spray water filtration chamber. The wastewater is filtered and purified by a filter layer inside the chamber and then recycled. The gas, after being demisted by a demister, enters the gas filtration chamber, where it is further filtered by activated carbon plates to adsorb and filter small particulate impurities before being discharged. The cleanliness of the discharged gas is significantly improved. Therefore, this technical solution achieves efficient treatment of industrial waste gas and recycling of the spray water, effectively solving the technical problems of insufficient treatment capacity, low treatment efficiency, and ineffective utilization of wastewater after washing industrial waste gas in existing industrial waste gas treatment devices used in ABS resin production plants.

[0023] This invention employs a technical solution that combines a demister in the gas channel with differential pressure monitoring components at both ends of the gas filter layer. The demister effectively reduces the water content of the gas, thereby reducing water mist buildup on the gas filter layer and improving its processing efficiency and lifespan. The differential pressure monitoring components effectively monitor the condition of the gas filter layer, facilitating timely replacement. The combination of these two methods effectively reduces the cost of using the gas filter layer, thus lowering the overall operating cost of the device.

[0024] This invention employs a technical solution that incorporates a spray water filtration layer inside the spray water collection chamber, consisting of a supporting mesh, a gravel layer, a coarse sand layer, and a fine sand layer. The wastewater after rinsing is filtered and reused, thus saving water. Furthermore, this invention utilizes a float level gauge inside the spray water collection chamber and a water inlet on the side wall of the chamber. The float level gauge controls the water supply to the spray water collection chamber, maintaining a constant spray water level within the chamber. Therefore, in summary, this invention significantly reduces water consumption while greatly improving automation and simplifying operation for workers. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a front sectional view of the structure of this utility model;

[0027] Figure 2 This is a front view structural diagram of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the gas filter layer of this utility model;

[0029] Figure 4 This is a cross-sectional view (partial cross-section) of the spray water filter layer of this utility model.

[0030] In the diagram: 1. Housing; 2. Industrial waste gas inlet; 3. Purified gas outlet; 4. Exhaust fan; 5. Spray water collection plate; 6. Spray water filter chamber; 7. Gas filter chamber; 8. Collection pipeline; 9. Gas passage; 10. Demister; 11. Spray tube bundle; 12. Spray water filter layer; 12a. Support mesh; 12b. Gravel layer; 12c. Coarse sand layer; 12d. Fine sand layer; 13. Main spray pipe; 14. Circulating water pump; 15. Backwash inlet; 16. Drain outlet; 17. Float level gauge; 18. Water inlet; 19a. Gas filter layer one; 19b. Gas filter layer two; 20. Differential pressure gauge port; 21. Maintenance ladder; 22. Maintenance door; A. Spray area. Detailed Implementation

[0031] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] like Figures 1-4 As shown, this utility model provides an industrial waste gas treatment device for an ABS resin production plant, including a housing 1, and a spray water collection plate 5, a spray water filter chamber 6, and a gas filter chamber 7 disposed within the housing. An industrial waste gas inlet 2 is provided on the upper part of the side wall of the housing 1, and the industrial waste gas inlet 2 is fixedly connected to the industrial waste gas conveying pipeline of the ABS resin production plant. A purified gas outlet 3 is provided on the lower part of the side wall of the housing 1, and the purified gas outlet 3 is fixedly connected to the purified gas conveying pipeline or the external discharge pipeline of the ABS resin production plant. An induced draft fan 4 is provided on the purified gas outlet 3, and the induced draft fan 4 is used to guide the industrial waste gas continuously into the interior of the device and to make it flow in a predetermined direction.

[0035] The spray water collection plate 5 is horizontally arranged in the upper half of the inner cavity of the box 1, dividing the inner cavity of the box 1 into two independent upper and lower parts. The area above the spray water collection plate 5 is the spray area A. The spray water filter chamber 6 and the gas filter chamber 7 are both arranged in the area below the spray water collection plate 5. A collection pipe 8 is vertically arranged between the spray water collection plate 5 and the spray water filter chamber 6, and the collection pipe 8 connects the spray area A and the spray water filter chamber 6. A switch valve is provided on the collection pipe 8.

[0036] A spray tube bundle 11 is provided at the top of the spray area A, and a number of nozzles are evenly arranged on the spray tube bundle 11. The spray tube bundle 11 is used to spray filtered water to wash the industrial waste gas and remove large particulate impurities in the industrial waste gas. The waste water is collected by the spray water collection plate 5 and then enters the spray water filter chamber 6 through the collection pipeline 8.

[0037] A spray water filter layer 12 is provided in the middle of the spray water filter chamber 6, which divides the inner cavity of the spray water filter chamber 6 into upper and lower parts. The bottom of the spray water filter chamber 6 is fixedly connected to the spray pipe bundle 11 through a spray main pipe 13, and a circulating water pump 14 is provided on the spray main pipe 13. The top of the spray water filter chamber 6 is fixedly connected to the gas filter chamber 7 through a gas channel 9, and a switch valve and a demister 10 are arranged sequentially along the direction from the spray water filter chamber 6 to the gas filter chamber 7. A gas filter layer 19a and a gas filter layer 19b are detachably arranged sequentially from top to bottom in the gas filter chamber 7, and the gas filter layer 19a and the gas filter layer 19b divide the inner cavity of the gas filter chamber 7 into three parts.

[0038] Furthermore, the spray water filtration chamber 6 and the gas filtration chamber 7 are spaced a certain distance apart to facilitate the entry of personnel into the chamber 1 for maintenance in the future.

[0039] Furthermore, the side wall of the gas filter chamber 7 is provided with two rectangular openings, and the gas filter layer 19a and the gas filter layer 19b are respectively inserted into the gas filter chamber 7 through the two rectangular openings and sealed.

[0040] The working principle of this utility model is as follows: Industrial waste gas first enters the spray area A. The spray tube bundle 11 washes the industrial waste gas, separating the impurities in the industrial waste gas from the gas. The gas-liquid two-phase mixture generated after further washing enters the spray water filter chamber 6 through the collection pipe 8. Due to the density difference between the gas and liquid phases, the gas rises through the gas channel 9 and passes through the demister 10 to remove water mist before entering the gas filter chamber 7. The gas entering the gas purification chamber 7 is then filtered and adsorbed by two layers of activated carbon plates before being discharged. The wastewater after washing is filtered and purified by the spray water filter layer 12 and falls to the bottom of the spray water filter chamber 6. The water at the bottom of the spray water filter chamber 6 is then pressurized by the circulating water pump 14 and enters the spray tube bundle 11 through the spray main pipe 13 to wash the industrial waste gas in the spray area A again. This cycle continues.

[0041] As a further optimization of this utility model, a three-way valve is provided on the main spray pipe 13, and the other outlet of the three-way valve is connected to the backwash inlet 15. The three-way valve is located above the circulating water pump 14. Under normal circumstances, the circulating water pump 14 and the spray pipe bundle 11 are kept in a continuous passage. When backwashing is required, the three-way valve is rotated to make the backwash inlet 15 and the circulating water pump 14 pass through, and the circulating water pump 14 and the spray pipe bundle 11 are disconnected. A drain outlet 16 is provided on the upper part of the side wall of the spray water filter chamber 6. Both the backwash inlet 15 and the drain outlet 16 are provided with switch valves, which are normally closed. This design allows for the periodic cleaning of impurities on the upper part of the spray water filter layer. In practical use, first, close the switch valves on the collection pipe 8 and the gas channel 9 respectively. Then, connect the backwash inlet 15 to the purified water pipeline and the drain outlet 16 to the external discharge pipeline or sewage pipeline. Next, open the switch valves on the backwash inlet 15 and the drain outlet 16 respectively, and control the circulating water pump to reverse. This allows purified water to flow from bottom to top in the spray water filter chamber 6 and wash the impurities on the upper part of the spray water filter layer. Finally, the wastewater carrying the impurities is discharged from the drain outlet 16.

[0042] As a further optimization of this utility model, a float level gauge 17 is provided inside the spray water filtration chamber 6, and a water inlet 18 is provided in the lower middle part of the side wall of the spray water filtration chamber 6. With this design, the liquid level of the spray water in the spray water filtration chamber 6 can be monitored by the float level gauge 17. When the liquid level reaches the lower limit value set by the float level gauge 17, the float level gauge 17 controls the opening and closing valve of the water inlet 18 through the control module to replenish water in the spray water collection chamber, so that the liquid level of the spray water in the spray water collection chamber is kept within a constant range.

[0043] As a further optimization of this utility model, the side wall of the gas filter chamber 7 is provided with two differential pressure gauge ports 20, which are used to install differential pressure gauges. This design can detect the pressure difference between the inlet and outlet of the gas filter layer 19, making it convenient for staff to replace the activated carbon plate in the gas filter layer 19 in a timely manner according to the usage of the gas filter layer 19.

[0044] As a further optimization of this utility model, the spray water filter chamber 6 is provided with a maintenance ladder 21, which is used by staff to open and close valves and facilitate operation during maintenance.

[0045] As a further optimization of this utility model, the housing 1 is provided with an inspection door 22, which is used by staff to open and close valves and to facilitate entry and exit of the housing 1 during inspection and maintenance.

[0046] As a further optimization of this utility model, the demister 10 is a gas-phase wire mesh demister, which has a lower operating cost.

[0047] The spray water filter layer 12 includes a support mesh 12a, a gravel layer 12b, a coarse sand layer 12c, and a fine sand layer 12d arranged sequentially from bottom to top.

[0048] Furthermore, filter cloths can be respectively installed below the gravel layer 12b and above the fine sand layer 12d. The filter cloths are fixed to the frame structure to prevent the fine sand from being washed away or displaced during filtration or backwashing.

[0049] Both the gas filter layer 19a and the gas filter layer 19b are made of activated carbon plates, and these activated carbon plates are installed in a frame structure.

[0050] Furthermore, this utility model also includes a control module, which serves as the control center of this utility model. The control module includes a PLC controller, several relays, several control buttons, and a display screen. The PLC controller is connected to detection devices such as the float level gauge 17 and the differential pressure gauge. The PLC controller controls the switching on and off of various valves, water pumps, and other equipment via relays. Users can also configure this utility model using the control buttons. For those skilled in the art, implementing the control module of this utility model based on the description herein is obvious and requires no creative effort; therefore, the specific details of the control module will not be elaborated further.

[0051] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An industrial waste gas treatment device applied to an ABS resin production plant, characterized in that: Includes a housing (1), an industrial waste gas inlet (2) is provided on the upper part of the side wall of the housing (1), a purified gas outlet (3) is provided on the lower part of the side wall of the housing, and an induced draft fan (4) is provided on the purified gas outlet (3). The inner cavity of the box (1) is provided with a spray water collection plate (5) that divides its internal space. The area above the spray water collection plate (5) is the spray area (A). The area below the spray water collection plate (5) is provided with a spray water filter chamber (6) and a gas filter chamber (7). The top of the spray water filter chamber (6) is fixedly connected to the spray area (A) through a collection pipe (8), and a switch valve is provided on the collection pipe (8); the top of the spray water filter chamber (6) is fixedly connected to the top of the gas filter chamber (7) through a gas channel (9), and a switch valve and a demister (10) are sequentially provided in the gas channel (9) along the direction from the spray water filter chamber (6) to the gas filter chamber (7); A spray tube bundle (11) is provided at the top of the spray area (A), and a plurality of nozzles are provided on the spray tube bundle (11); The spray water filtration chamber (6) is provided with a spray water filtration layer (12). The bottom of the spray water filtration chamber (6) is fixedly connected to the spray pipe bundle (11) through the spray main pipe (13). The spray main pipe (13) is provided with a circulating water pump (14). The gas filter chamber (7) is provided with a first gas filter layer (19a) and a second gas filter layer (19b) that are detachable from top to bottom. Two differential pressure gauge ports (20) are provided on the side wall of the gas filter chamber (7), and the two differential pressure gauge ports (20) are used to install differential pressure gauges.

2. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: The enclosure is equipped with an inspection door (22).

3. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: The spray water filtration chamber (6) is equipped with a maintenance ladder (21).

4. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: The spray water filter layer (12) includes a support mesh (12a), a gravel layer (12b), a coarse sand layer (12c), and a fine sand layer (12d) arranged sequentially from bottom to top.

5. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: The demister (10) is a gas-phase wire mesh demister.

6. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: A three-way valve is provided on the main spray pipe (13), and the other outlet of the three-way valve is connected to a backwash inlet (15); a drain outlet (16) is provided on the upper side wall of the spray water filter chamber (6), and both the backwash inlet (15) and the drain outlet (16) are equipped with on / off valves.

7. The industrial waste gas treatment device applied to an ABS resin production plant according to claim 1, characterized in that: A float level gauge (17) is provided in the lower middle part of the spray water filtration chamber (6), and a water inlet (18) is provided in the lower middle part of the side wall of the spray water filtration chamber (6).

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