Organic waste gas treatment equipment for regenerated fiber manufacturing

Abstract

The utility model discloses organic waste gas treatment equipment for manufacturing regenerated fibers, which belongs to the field of waste gas treatment and comprises a tower body, a plurality of reaction areas are sequentially arranged in the tower body from bottom to top, a gas inlet is arranged at the bottom of the tower body, a gas outlet is arranged at the top of the tower body, and a feeding device is further connected to the bottom of the tower body. By arranging a plurality of different reaction areas in the tower body and arranging the reaction areas up and down, waste gas can be subjected to multiple reactions in the process of moving from bottom to top, so that the waste gas is effectively treated, and the problems that in the prior art, a system formed by combining a plurality of small devices is adopted during waste gas treatment in the chemical fiber industry, the efficiency is low, and the maintenance cost is high are solved.

Description

Technical Field

[0001] The utility model relates to a waste treatment device, in particular to an organic waste gas treatment device made of regenerated fiber. Background Art

[0002] At present, most of the waste gases in the chemical fiber industry are treated separately in workshops and systems, such as scrubbers, low-temperature plasma purification and catalytic devices. There are few processes and systems for overall collection and centralized treatment. The small-scale low-temperature plasma treatment process has been recognized by the environmental protection industry as an inefficient treatment process. Under the current environmental protection situation where on-line monitoring devices need to be installed to control the waste gas emission outlets of enterprises, the multi-outlet emissions not only have adverse factors for enterprise control but also increase the operation and maintenance costs. Therefore, an organic waste gas treatment process for regenerated fiber manufacturing with full-plant collection and centralized treatment is introduced.

[0003] For example, the "waste gas treatment system for the chemical fiber industry" disclosed in the Chinese patent literature, with the publication number CN208032272U, includes a scrubber, a low-temperature plasma purification and catalytic device, and an emission tower. The scrubber includes a first scrubber, a second scrubber, and a third scrubber arranged in parallel. The first scrubber and the second scrubber are both single-layer towers with bipolar spraying structures, and the third scrubber is a double-layer tower with a single-stage spraying structure. The bottom of the first scrubber is provided with a first air inlet and a first exhaust fan, the bottom of the second scrubber is provided with a second air inlet and a second exhaust fan, the bottom of the third scrubber is provided with a third air inlet, a third exhaust fan, and a fourth exhaust fan. The low-temperature plasma purification and catalytic device includes a plasma power supply, a plasma purification module, and a photo-oxygen catalytic module. The disadvantage of this patent is that the treatment is carried out by multiple small waste gas treatment devices, with low efficiency and high maintenance costs. Summary of the Utility Model

[0004] The utility model aims to overcome the problems in the prior art that the waste gas treatment in the chemical fiber industry uses a system composed of multiple small devices, with low efficiency and high maintenance costs, and provides an organic waste gas treatment device made of regenerated fiber, which can more efficiently treat the organic waste gas generated during chemical fiber manufacturing.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] The utility model provides an organic waste gas treatment device for regenerated fiber manufacturing, which includes a tower body. A plurality of reaction zones are sequentially arranged in the tower body from bottom to top. An air inlet is provided at the bottom of the tower body, an air outlet is provided at the top of the tower body, and a feeding device is also connected to the bottom of the tower body.

[0007] By arranging multiple different reaction zones in the tower body and arranging them vertically, the waste gas can undergo multiple reactions during the process of moving upward from bottom to top, thus being effectively treated. Compared with the prior art, since there is no need to transport gas in multiple devices, the treatment efficiency is greatly improved, and the number of devices is reduced, thereby reducing the maintenance cost.

[0008] Preferably, among the several reaction zones, there is a gas-liquid contact zone, and a spraying assembly is provided in the gas-liquid contact zone. Gas-liquid contact can be achieved through the spraying assembly to preliminarily wash the waste gas.

[0009] Preferably, among the several reaction zones, there is a water mist removal zone, and a spraying assembly and a demisting plate are provided in the water mist removal zone. The spraying assembly can further bring the waste gas into contact with water to form a gas-liquid mixture, and the demisting plate removes liquid droplets to carry away impurities and dust in the waste gas.

[0010] Preferably, a wire mesh demisting structure is provided on the demisting plate. The wire mesh demisting structure includes a first demisting channel that penetrates up and down on the demisting plate, and wire mesh is provided on the inner wall of the first demisting channel. The wire mesh can improve the demisting effect by increasing the contact area with the gas-liquid mixture.

[0011] Preferably, a cyclone demisting structure is provided on the demisting plate. The cyclone demisting structure wraps around a second demisting channel that penetrates up and down on the demisting plate, and a cyclone baffle is provided on the second demisting channel. The cyclone baffle can enable the gas-liquid mixture to continuously converge during the upward movement, thereby forming large liquid droplets that fall downward.

[0012] Preferably, a liquid collection area is provided at the bottom of the tower body, and a circulation channel is provided between the liquid collection area and the spraying assembly. Through the circulation channel, the liquid that falls after spraying can be reused for continuous spraying, reducing water consumption.

[0013] Preferably, a liquid collection area is provided at the bottom of the tower body, and a circulation channel is provided between the liquid collection area and the spraying assembly. Through the circulation channel, the liquid that falls after spraying can be reused for continuous spraying, reducing water consumption.

[0014] Preferably, among the several reaction zones, there is a contact catalytic reaction zone, and a catalyst is filled in the contact catalytic reaction zone.

[0015] Preferably, among the several reaction zones, there is an oil mist removal zone, and an electrostatic generation structure is provided in the oil mist removal zone.

[0016] Preferably, the feeding device includes an alkali liquid tank and an oxidant tank.

[0017] Therefore, the utility model has the following beneficial effects: (1) It can enable the waste gas to undergo multiple reactions during the upward movement, so as to be effectively treated; (2) There is no need to transport gas in multiple devices, greatly improving the treatment efficiency; (3) The number of devices is reduced, thereby reducing the maintenance cost; (4) The water consumption is reduced through the circulation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 is a schematic diagram of the structure of the tower body of the utility model.

[0020] Figure 3 is a schematic cross-sectional view at the first demisting channel of the utility model.

[0021] Figure 4 is a schematic view from a bottom-up perspective at the second demisting channel of the utility model.

[0022] In the figure: tower body 1, waste gas inlet pipe 2, intake fan 3, intake connection pipe 4, lye tank 5, oxidant tank 6, liquid collection area 7, gas-liquid contact reaction area 8, water mist removal area 9, catalyst contact reaction area 10, oil mist removal area 11, spray head 12, atomizing head 13, demisting plate 14, wire mesh 15, swirl baffle 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the utility model in conjunction with the drawings and the detailed embodiments.

[0024] Example 1, as Figure 1 、 2 、3 shows, an organic waste gas treatment device made of regenerated fiber, including a tower body 1. One side of the tower body 1 is connected with a waste gas collection assembly, and the waste gas collection assembly successively includes a waste gas inlet pipe 2, an intake fan 3, and an intake connection pipe 4. One end of the waste gas inlet pipe 2 is provided with a flared opening, and driven by the intake fan 3, the waste gas enters the interior of the tower body 1 through the waste gas connection pipe.

[0025] The other side of the tower body 1 is connected with a feeding device, and the feeding device includes a lye tank 5 and an oxidant tank 6. The lye tank 5 is communicated with the tower body 1 through a lye inlet channel, and a lye inlet pump is provided on the lye inlet channel. The oxidant tank 6 is communicated with the tower body 1 through an oxidant inlet channel, and an oxidant inlet pump is provided on the oxidant inlet channel.

[0026] A liquid collection area 7 is provided at the bottom of the tower body 1. Above the liquid collection area 7, several reaction areas are successively arranged from bottom to top. An air inlet is provided at the bottom of the tower body 1, and the air inlet is connected to the waste connection pipe. An air outlet is provided at the top of the tower body 1. The several reaction areas are successively: a gas-liquid contact reaction area 8, a water mist removal area 9, a catalyst contact reaction area 10, and an oil mist removal area 11 from bottom to top. The waste gas inlet pipe 2 and the feeding device are both connected above the liquid level of the liquid collection area 7.

[0027] A spray assembly is provided in the gas-liquid contact reaction area 8. The spray assembly includes a spray support, and the spray support is fixed on the inner wall of the tower body 1. The number of spray supports is two, and the two spray supports are arranged at intervals up and down. A number of spray heads 12 are provided on each spray support. The spray heads 12 are distributed at intervals on the cross-section of the tower body 1 and are arranged as evenly as possible. The spray heads 12 spray liquid downward.

[0028] A spray assembly and a demisting plate 14 are provided in the water mist removal area 9. The spray assembly includes a spray support. The spray support and the demisting plate 14 are both fixed on the inner wall of the tower body 1. Moreover, the spray support and the demisting plate 14 are also connected by a connecting piece to enhance the fixing effect. The number of demisting plates 14 is two, and the two demisting plates 14 are arranged at intervals up and down. The number of spray supports is three, and a number of spray heads 13 are provided on each spray support. Two of the spray supports are respectively located above and below the lower demisting plate, and the spray heads 13 face the lower demisting plate. The other spray support is located below the upper demisting plate, and the spray heads 13 face the upper demisting plate. Before the waste gas passes through the lower demisting plate, spraying is first carried out. After passing through the lower demisting plate, the waste gas is successively sprayed by two spray heads 13 with different orientations to increase the gas-liquid mixing effect. After the waste gas passes through the upper demisting plate, spraying is no longer carried out.

[0029] A wire mesh 15 demisting structure is provided on the demisting plate 14. The wire mesh 15 demisting structure includes a first demisting channel that penetrates up and down on the demisting plate 14. A wire mesh 15 is provided on the inner wall of the first demisting channel. During the process of the waste gas passing through the first demisting channel, the wire mesh 15 can improve the demisting effect by increasing the contact area with the gas-liquid mixture. The liquid droplets hanging on the wire mesh 15 will converge into large liquid droplets and thus fall downward into the liquid collection area 7.

[0030] A circulation channel is provided between the liquid collection area 7 and the spray assembly and the spray assembly. A circulation pump is provided on the circulation channel. The circulation pump realizes the circulation of the liquid by transporting the liquid in the liquid collection area 7 back to the spray assembly and the spray assembly for spraying again.

[0031] The contact catalytic reaction zone is filled with a catalyst. In this embodiment, the catalyst is a ceramic-based / silica-alumina + potassium permanganate composite material. An electrostatic generating structure is provided in the oil mist removal zone 11, and the electrostatic generating structure forms an electrostatic field through a 60-80 KV high-voltage electrostatic.

[0032] During the use of the device, the intake air blower 3 introduces gas into the tower body 1. At the same time, the feeding device inputs the oxidant and the alkali liquor into the liquid collecting zone 7 at the bottom of the tower body 1. The liquid in the liquid collecting zone 7 is transported to the spraying assembly and the atomizing assembly through the circulation channel to wash the waste gas, and the washed liquid returns to the liquid collecting zone 7 again. The waste gas passes through the gas-liquid contact reaction zone 8, the water mist removal zone 9, the catalyst contact reaction zone 10, and the oil mist removal zone 11 in sequence and then is discharged to the subsequent equipment.

[0033] Embodiment 2, as Figure 1 、 2 、Figure 4 shows an organic waste gas treatment device made of regenerated fiber, including a tower body 1. One side of the tower body 1 is connected with a waste gas collection assembly, and the waste gas collection assembly sequentially includes a waste gas inlet pipe 2, an intake air blower 3, and an intake connection pipe 4. One end of the waste gas inlet pipe 2 is provided with a flared opening. Driven by the intake air blower 3, the waste gas enters the interior of the tower body 1 through the waste gas connection pipe.

[0034] The other side of the tower body 1 is connected with a feeding device, and the feeding device includes an alkali liquor tank 5 and an oxidant tank 6. The alkali liquor tank 5 is communicated with the tower body 1 through an alkali liquor inlet channel, and an alkali liquor inlet pump is provided on the alkali liquor inlet channel. The oxidant tank 6 is communicated with the tower body 1 through an oxidant inlet channel, and an oxidant inlet pump is provided on the oxidant inlet channel.

[0035] A liquid collecting zone 7 is provided at the bottom of the tower body 1. A plurality of reaction zones are sequentially arranged from bottom to top above the liquid collecting zone 7. An air inlet is provided at the bottom of the tower body 1, and the air inlet is connected with the waste connection pipe. An air outlet is provided at the top of the tower body 1. The plurality of reaction zones are sequentially: a gas-liquid contact reaction zone 8, a water mist removal zone 9, a catalyst contact reaction zone 10, and an oil mist removal zone 11 from bottom to top. Both the waste gas inlet pipe 2 and the feeding device are connected above the liquid level of the liquid collecting zone 7.

[0036] A spraying assembly is provided in the gas-liquid contact reaction zone 8, and the spraying assembly includes a spraying support, and the spraying support is fixed on the inner wall of the tower body 1. The number of the spraying supports is two, and the two spraying supports are arranged at intervals up and down. A plurality of spray heads 12 are arranged on each spraying support. The spray heads 12 are distributed at intervals on the cross section of the tower body 1 and are arranged as evenly as possible, and the spray heads 12 spray liquid downward.

[0037] A spray component and a demisting plate 14 are provided in the water mist removal area 9. The spray component includes a spray support. Both the spray support and the demisting plate 14 are fixed on the inner wall of the tower body 1. Moreover, the spray support and the demisting plate 14 are also connected by a connecting piece to enhance the fixing effect. There are two demisting plates 14, and the two demisting plates 14 are arranged at an interval up and down. There are three spray supports, and a number of spray heads 13 are provided on each spray support. Two of the spray supports are respectively located above and below the lower demisting plate, and the spray heads 13 face the lower demisting plate. The other spray support is located below the upper demisting plate, and the spray heads 13 face the upper demisting plate. Before the waste gas passes through the lower demisting plate, spraying is first carried out. After passing through the lower demisting plate, the waste gas is successively sprayed by the spray heads 13 with two different orientations, increasing the gas-liquid mixing effect. After the waste gas passes through the upper demisting plate, spraying is no longer carried out.

[0038] A swirl demisting structure is provided on the demisting plate 14. The swirl demisting structure wraps around a second demisting channel that runs through the demisting plate 14 up and down. A swirl baffle 16 is provided on the second demisting channel. The swirl baffle 16 can cause the gas-liquid mixture to continuously converge during the upward movement, thereby forming large liquid droplets that fall downward.

[0039] A circulation channel is provided between the liquid collection area 7, the spray component, and the sprinkling component. A circulation pump is provided on the circulation channel. The circulation pump realizes the circulation of the liquid by transporting the liquid in the liquid collection area 7 back to the sprinkling component and the spray component for spraying.

[0040] A catalyst is filled in the contact catalytic reaction area. In this embodiment, the catalyst is a ceramic-based / silica-alumina + potassium permanganate composite material. An electrostatic generating structure is provided in the oil mist removal area 11. The electrostatic generating structure forms an electrostatic field through a 60 - 80 KV high-voltage electrostatic.

[0041] During the use of the device, the intake air fan 3 introduces the gas into the tower body 1. At the same time, the feeding device inputs the oxidant and the alkali solution into the liquid collection area 7 at the bottom of the tower body 1. The liquid in the liquid collection area 7 is transported to the sprinkling component and the spray component through the circulation channel to wash the waste gas, and the washed liquid returns to the liquid collection area 7 again. The waste gas successively passes through the gas-liquid contact reaction area 8, the water mist removal area 9, the catalyst contact reaction area 10, and the oil mist removal area 11 and then is discharged to subsequent equipment.

[0042] Example three, as Figure 1 、 2As shown in Figures 3 and 4, an organic waste gas treatment device made of regenerated fiber includes a tower body 1. One side of the tower body 1 is connected with an exhaust gas collection component, and the exhaust gas collection component successively includes an exhaust gas inlet pipe 2, an intake fan 3, and an intake connection pipe 4. One end of the exhaust gas inlet pipe 2 is provided with a flared opening. Driven by the intake fan 3, the exhaust gas enters the interior of the tower body 1 through the exhaust gas connection pipe.

[0043] The other side of the tower body 1 is connected with a feeding device, and the feeding device includes an alkali solution tank 5 and an oxidant tank 6. The alkali solution tank 5 is communicated with the tower body 1 through an alkali solution inlet channel, and an alkali solution inlet pump is arranged on the alkali solution inlet channel. The oxidant tank 6 is communicated with the tower body 1 through an oxidant inlet channel, and an oxidant inlet pump is arranged on the oxidant inlet channel.

[0044] A liquid collection area 7 is arranged at the bottom of the tower body 1. Several reaction areas are successively arranged from bottom to top above the liquid collection area 7. An air inlet is arranged at the bottom of the tower body 1, and the air inlet is connected with the waste connection pipe. An air outlet is arranged at the top of the tower body 1. The several reaction areas are successively: a gas-liquid contact reaction area 8, a water mist removal area 9, a catalyst contact reaction area 10, and an oil mist removal area 11 from bottom to top. The exhaust gas inlet pipe 2 and the feeding device are both connected above the liquid level of the liquid collection area 7.

[0045] A spraying component is arranged in the gas-liquid contact reaction area 8, and the spraying component includes a spraying support, and the spraying support is fixed on the inner wall of the tower body 1. The number of the spraying supports is two, and the two spraying supports are arranged at intervals up and down. A plurality of spray heads 12 are arranged on each spraying support. The spray heads 12 are distributed at intervals on the cross section of the tower body 1 and are arranged as evenly as possible, and the spray heads 12 spray liquid downward.

[0046] A spraying component and a demisting plate 14 are arranged in the water mist removal area 9. The spraying component includes a spraying support, and both the spraying support and the demisting plate 14 are fixed on the inner wall of the tower body 1. Moreover, the spraying support and the demisting plate 14 are also connected through a connecting piece to enhance the fixing effect. The number of the demisting plates 14 is two, and the two demisting plates 14 are arranged at intervals up and down. The number of the spraying supports is three, and a plurality of spray heads 13 are arranged on each spraying support. Two of the spraying supports are respectively located above and below the lower demisting plate, and the spray heads 13 face the lower demisting plate. The other spraying support is located below the upper demisting plate, and the spray heads 13 face the upper demisting plate. Before the exhaust gas passes through the lower demisting plate, spraying is first carried out. After passing through the lower demisting plate, the exhaust gas is successively sprayed by the spray heads 13 with two different orientations to increase the gas-liquid mixing effect. After the exhaust gas passes through the upper demisting plate, spraying is no longer carried out.

[0047] In this embodiment, the two demisting plates 14 adopt different demisting structures. A wire mesh 15 demisting structure is provided on the lower demisting plate. The wire mesh 15 demisting structure includes a first demisting channel that penetrates up and down on the demisting plate 14, and a wire mesh 15 is provided on the inner wall of the first demisting channel. During the process of the waste gas passing through the first demisting channel, the wire mesh 15 can improve the demisting effect by increasing the contact area with the gas-liquid mixture. The liquid droplets hanging on the wire mesh 15 will converge into large droplets and then fall downward into the liquid collection area 7. A cyclone demisting structure is provided on the upper demisting plate. The cyclone demisting structure wraps around a second demisting channel that penetrates up and down on the demisting plate 14, and a cyclone baffle 16 is provided on the second demisting channel. The cyclone baffle 16 can cause the gas-liquid mixture to continuously converge during the upward movement, thereby forming large droplets and falling downward.

[0048] A circulation channel is provided between the liquid collection area 7 and the spray component and the atomizing component. A circulation pump is provided on the circulation channel. The circulation pump realizes the circulation of the liquid by transporting the liquid in the liquid collection area 7 back to the spray component and the atomizing component for spraying.

[0049] The contact catalytic reaction zone is filled with a catalyst. In this embodiment, the catalyst is a ceramic-based / silica-alumina + potassium permanganate composite material. An electrostatic generating structure is provided in the oil mist removal area 11, and the electrostatic generating structure forms an electrostatic field through a 60-80 KV high-voltage electrostatic.

[0050] During the use of the device, the intake fan 3 introduces the gas into the tower body 1. At the same time, the feeding device inputs the oxidant and the alkaline solution into the liquid collection area 7 at the bottom of the tower body 1. The liquid in the liquid collection area 7 is transported to the spray component and the atomizing component through the circulation channel to wash the waste gas, and the washed liquid returns to the liquid collection area 7 again. The waste gas passes through the gas-liquid contact reaction zone 8, the water mist removal zone 9, the catalyst contact reaction zone 10, and the oil mist removal zone 11 in sequence and then is discharged to subsequent equipment.

Claims

1. An organic waste gas treatment device for regenerated fiber manufacturing, characterized in that: The tower body comprises a tower body, in which a plurality of reaction zones are arranged in sequence from bottom to top, an air inlet is arranged at the bottom of the tower body, an air outlet is arranged at the top of the tower body, and a feeding device is connected to the bottom of the tower body.

2. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 1 is characterized in that: The plurality of reaction zones include a gas-liquid contact zone, and a spray component is arranged in the gas-liquid contact zone.

3. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 1 is characterized in that: The plurality of reaction zones include a water mist removal zone, in which a spray assembly and a demister plate are arranged.

4. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 3 is characterized in that: The demister plate is provided with a wire mesh demister structure, and the wire mesh demister structure comprises a first demister channel which is arranged on the demister plate and passes through from top to bottom, and a wire mesh is provided on the inner wall of the first demister channel.

5. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 3 is characterized in that: The demister plate is provided with a cyclone demister structure, the cyclone demister structure wraps a second demister channel which is vertically connected to the demister plate, and the second demister channel is provided with a cyclone rib.

6. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 2 is characterized in that: A liquid collecting area is provided at the bottom of the tower body, and a circulation channel is provided between the liquid collecting area and the spraying assembly.

7. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 3 is characterized in that: A liquid collecting area is provided at the bottom of the tower body, and a circulation channel is provided between the liquid collecting area and the spray assembly.

8. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 1 is characterized in that: The plurality of reaction zones include a contact catalytic reaction zone, and the contact catalytic reaction zone is filled with a catalyst.

9. The organic waste gas treatment equipment for regenerated fiber manufacturing according to claim 1 is characterized in that: The plurality of reaction zones include an oil mist removal zone, and a static electricity generating structure is arranged in the oil mist removal zone.

10. The organic waste gas treatment equipment for regenerated fiber manufacturing according to any one of claims 1 to 9, characterized in that: The feeding device comprises an alkali liquid tank and an oxidant tank.

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