CN112191095A

CN112191095A - Biomembrane exhaust-gas treatment equipment

Info

Publication number: CN112191095A
Application number: CN202010913238.9A
Authority: CN
Inventors: 栾明先; 张曦冉; 隋玉胜; 丁兆波
Original assignee: Qingdao Jinxu Environment Engineering Co ltd
Current assignee: Qingdao Jinxu Environment Engineering Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-01-08
Anticipated expiration: 2040-09-03
Also published as: CN112191095B

Abstract

The invention relates to a biological film waste gas treatment device, which comprises a box body, a waste gas channel arranged on the box body, a spraying system arranged on the upper part of the box body and a control device, wherein the box body comprises a side wall, a bottom plate and a top cover, a biological film filler plate is arranged in the box body, the biological film filler plate comprises a frame and a filler device arranged on the frame, and the biological film waste gas treatment device is characterized in that: the exhaust gas channel is arranged transversely. The waste gas channel is transversely arranged, the flow direction of the spray liquid is vertically crossed with the flow direction of the waste gas, and the absorption effect is better than that of a method of spraying the liquid from top to bottom and absorbing the waste gas from bottom to top, and the absorption is more uniform and sufficient; the flowing direction of the waste gas is vertical to the direction of the spraying liquid, so that the contact absorption efficiency of the waste gas and the spraying liquid is higher; the arrangement structure can reduce the density of the packing, and can be arranged into a multi-layer drawable plate-shaped structure, so that the overhaul, maintenance and cleaning work of the packing are easier to carry out.

Description

Biomembrane exhaust-gas treatment equipment

Technical Field

The invention relates to the technical field of waste gas treatment, in particular to a device for purifying waste gas by utilizing a biological membrane.

Background

Biological treatment is the decomposition and conversion of gaseous pollutants in exhaust gas into fewer or even no harmful substances by using the life process of microorganisms. A wide variety of microorganisms exist in nature and almost all inorganic and organic pollutants are transformed. The biological treatment does not need regeneration and other advanced treatment processes, and has the advantages of simple equipment, low energy consumption, safety, reliability, no secondary pollution and the like compared with other purification methods.

Under suitable environmental conditions, the microorganisms continuously absorb nutrients and carry out metabolic activities according to the own metabolic mode. The biological treatment of waste gas utilizes the characteristic that the microorganisms need nutrient substances in the metabolism process to convert the harmful substances in the waste gas into simple inorganic substances such as carbon dioxide, water, cell substances and the like.

The equipment for treating waste gas by using a biological purification method in the market generally has the problems of large floor area, difficult replacement and easy blockage of fillers, low actual utilization rate of microorganisms, obvious layering phenomenon, many uncertain factors in management and the like.

The fillers of the existing waste gas treatment equipment are vertically arranged, the spraying liquid moves from top to bottom, the waste gas moves from bottom to top, the concentration of pollutants is high when the waste gas just enters the bottom of the equipment, and the concentration of the spraying liquid at the bottom of the equipment is also high, so that the absorption effect of the lowest layer part of the equipment is poor, the bottom part of the equipment cannot be fully utilized, and the space is wasted.

When liquid flows downwards along the packing layer, a wall flow phenomenon sometimes occurs, and the wall flow effect causes uneven distribution of gas-liquid two phases in the packing layer, so that the mass transfer efficiency is reduced, and the absorption effect of the liquid on waste gas is influenced. For solving above-mentioned problem, increase the absorption effect, the multilayer is generally adopted to current exhaust-gas treatment equipment of vertical arrangement, carries out multistage spraying to satisfy the absorptive homogeneity of liquid phase. Generally, when the number of the filling layers is two, secondary spraying is adopted; when the number of the filling layers is three, three-stage spraying is adopted. The spray pump needs to be selected according to the characteristics of spraying, the requirement on the lift is high, and in order to ensure the pressure requirement of an upper-layer spray system, a pressure stabilizing valve or a ball valve is added to a lower-layer spray system for control, so that the manufacturing cost of the absorption packed tower is increased, and the spray effect of the absorption packed tower spray system can be influenced by the opening degree of the pressure stabilizing valve or the ball valve.

On the other hand, the spraying liquid contacted with the vertically arranged lower-layer filler passes through the upper-layer filler, the water contains more impurities, the lower-layer filler is easy to block, and the absorption effect is poor.

Disclosure of Invention

The invention aims to provide the waste gas treatment equipment which makes up the defects of the prior waste gas treatment mode by using a biological method, improves the filler blockage, is better controlled, is more stable and has higher purification efficiency.

In order to solve the technical problem, the biological film waste gas treatment equipment comprises a box body, a waste gas channel arranged on the box body, a spraying system arranged on the upper portion of the box body and a control device, wherein the box body comprises a side wall, a bottom plate and a top cover, a biological film packing plate is arranged in the box body, the biological film packing plate comprises a frame and a packing device arranged on the frame, and the waste gas channel is transversely arranged.

The waste gas channel is transversely arranged, the flow direction of the spray liquid is vertically crossed with the flow direction of the waste gas, and compared with a method that the spray liquid is from top to bottom and the waste gas is from bottom to top, the absorption effect is better, and the absorption is more uniform and sufficient; the flowing direction of the waste gas is vertical to the direction of the spraying liquid, so that the contact absorption efficiency of the waste gas and the spraying liquid is higher; the arrangement structure can reduce the density of the packing, and can be arranged into a multi-layer drawable plate-shaped structure, so that the overhaul, maintenance and cleaning work of the packing are easier to carry out.

The biological film packing plate and the box body are obliquely arranged. The biofilm filler plates are obliquely arranged, the filler device can better and more uniformly directly contact with fresh spraying liquid, most of filler monomers can directly contact with the spraying liquid, and compared with the scheme that the existing filler device arranges the fillers in an overlapped mode in the vertical direction, the blockage situation of the filler is lighter.

The box body is provided with a track matched with the frame, and the frame is installed in the box body in a drawable mode through the track.

The track is arranged on the side wall, an upper maintenance position is arranged above the box body, the maintenance position is provided with a lifting device, the top cover is provided with a slit matched with the size of the biological film filler plate, the track extends to the upper maintenance position through the slit, and the biological film filler plate can move to the upper maintenance position through the slit; or the tracks are arranged on the top cover and the bottom plate, the outer side of the box body is provided with a side overhauling position, the side overhauling position is provided with a moving device, the side wall is provided with a slot matched with the size of the biological film packing plate, the tracks extend to the side overhauling position through the slot, and the biological film packing plate can move to the side overhauling position through the slot.

Set up hoisting device or the mobile device that can remove the biomembrane filled sheet above the box or the side, can pass through the biomembrane filled sheet that the rope was used a period and move outside the box and maintain, the biomembrane filled sheet can rise or the sideslip along the track, can carry out automated operation, reduction cost of labor to hoisting device or mobile device through installation automation equipment.

The included angle between the biological film packing plate and the vertical direction of the box body is 50-65 degrees.

More preferably, the included angle between the biofilm filler plates and the vertical direction of the box body is 58-62 degrees.

The packing device comprises a transverse support fixedly mounted on a frame, a connecting pipe fixedly mounted on the transverse support and a packing monomer mounted on the connecting pipe, wherein the connecting pipe is connected with a flexible pipe, the flexible pipe is connected with a fluctuation device, the connecting pipe is provided with a plurality of packing monomers connected in series on the connecting pipe, the packing monomer comprises a disc and a plurality of fiber bundles arranged on the edge of the disc, an L-shaped connecting branch pipe is arranged at the joint of the disc and the connecting pipe, the lower end of the connecting branch pipe is provided with a corrugated pipe with a closed bottom end, the lower end of the corrugated pipe is connected with the disc, the connecting pipe, the connecting branch pipe, the corrugated pipe and the flexible pipe are filled with liquid, and fluctuation generated by the fluctuation device can be transmitted to.

The biomembrane packing plate comprises an extension part extending out of the box body from the slit, the upper end part of the connecting pipe is connected with a flexible pipe, the flexible pipe and the wave device are arranged on the extension part, and the flexible pipe and the wave device can be drawn out of the box body together with the biomembrane packing plate; or the flexible pipe and the wave device are arranged on the side face of the biological membrane packing plate, a hollow cavity is arranged in the transverse support, the side end of the hollow cavity is connected with the flexible pipe, a connecting structure for connecting the flexible pipe packing device is arranged on the track position, the connecting structure comprises an installation pipe, a flexible pipe, a first elastic membrane and a second elastic membrane, the installation pipe is arranged in the installation pipe, the installation pipe penetrates through the side wall, the first elastic membrane is arranged on the hollow cavity, the second elastic membrane is arranged at the end part of the flexible pipe, and a telescopic device capable of enabling the flexible pipe to stretch is arranged on the installation pipe.

The wave device comprises a permanent magnet, a coil, a second corrugated pipe filled with liquid and a control circuit, wherein the coil is connected with the control circuit, the coil is sleeved at the front end of the permanent magnet, the front end of the coil is connected with a push plate, the front part of the push plate is connected with the second corrugated pipe, and the second corrugated pipe is communicated with a flexible pipe.

A valve is arranged at the end part of the hollow cavity; the disc comprises an inner ring and an outer ring, the lower end of the corrugated pipe is connected with the inner ring, and the inner ring is connected with the outer ring through a connecting rod.

After the structure is adopted, the waste gas channel is transversely arranged, the flow direction of the spray liquid is vertically crossed with the flow direction of the waste gas, and the absorption effect is better and more uniform and sufficient compared with a method that the spray liquid is from top to bottom and the waste gas is from bottom to top; the flowing direction of the waste gas is vertical to the direction of the spraying liquid, so that the contact absorption efficiency of the waste gas and the spraying liquid is higher; the arrangement structure can reduce the density of the packing, and can be arranged into a multi-layer drawable plate-shaped structure, so that the overhaul, maintenance and cleaning work of the packing are easier to carry out. The biofilm filler plates are obliquely arranged, the filler device can better and more uniformly directly contact with fresh spraying liquid, most of filler monomers can directly contact with the spraying liquid, and compared with the scheme that the existing filler device arranges the fillers in an overlapped mode in the vertical direction, the blockage situation of the filler is lighter.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a front view of a biofilm exhaust gas treatment apparatus of the present invention.

FIG. 2 is a top view of a biofilm waste gas treatment apparatus of the present invention.

Fig. 3 is a schematic structural view of a biofilm packing sheet.

Fig. 4 is a schematic structural view of a biofilm packing sheet.

Fig. 5 is a partially enlarged view of a portion a in fig. 4.

Fig. 6 is a sectional view taken along line B-B in fig. 5.

FIG. 7 is a schematic view of the structure of the filler monomer when it is not installed.

Fig. 8 is a partially enlarged view of a portion B in fig. 4, in which the flexible tube 17 and the hollow chamber 31 are detached.

Fig. 9 is a partially enlarged view of a portion B in fig. 4, in which the flexible tube 17 and the hollow chamber 31 are connected together.

Fig. 10 is a partially enlarged view of portion B of fig. 4, showing only a portion of the biofilm filler plates.

Fig. 11 is a schematic structural view of the vibration device.

Detailed Description

As shown in fig. 1 and 2, the biofilm waste gas treatment equipment of the present invention comprises a box body 1, a waste gas channel arranged on the box body 1, a spraying system 2 arranged on the upper part of the box body 1 and a control device, wherein the box body 1 comprises a side wall 1b, a bottom plate and a top cover 1a, a plurality of biofilm filler plates 3, preferably six biofilm filler plates 3 are arranged in the box body 1, each biofilm filler plate 3 comprises a frame 4 and a filler device 8 arranged on the frame 4, and the waste gas channel is transversely arranged. The spraying system 2 is connected with a control device, the control device is an electric control cabinet 9, the bottom of the tail end of the box body 1 is provided with a sludge discharge port 5, the sludge discharge port 5 is connected with a sludge discharge pipe 6, and the sludge discharge pipe 6 is connected with an activated sludge tank 7.

The biological film packing plate 3 and the box body 1 are obliquely arranged. The biofilm filler plates 3 are obliquely arranged, the filler device can better and more uniformly directly contact with fresh spraying liquid, most of filler monomers can directly contact with the spraying liquid, and compared with the scheme that the existing filler device arranges fillers in an overlapped mode in the vertical direction, the blockage situation of the filler is lighter.

The box 1 is provided with a track 10 matched with the frame 4, and the frame 4 is installed in the box body 1 in a drawable mode through the track 10.

The biofilm filler plates 3 can be extracted from the box body for maintenance, and two embodiments can be realized.

In the first embodiment, the biological film packing plate is drawn out from above the box body, as shown in fig. 1, the rails 10 are arranged on the side walls 1b, the upper maintenance position 12 is arranged above the box body 1, the lifting device (not shown) is arranged on the upper maintenance position 12, the top cover 1a is provided with a slot (not shown) matched with the size of the biological film packing plate 3, the rails 10 extend to the upper maintenance position 12 through the slot, and the biological film packing plate 3 can move to the upper maintenance position 12 through the slot. The lifting device can be a motor and a rope or a gear rack and other mechanisms. By providing the sealing device, the slot remains closed during operation of the exhaust gas treatment device.

In the second embodiment, the track 10 is drawn out from the side of the box body, as shown in fig. 2, the track 10 is arranged on the top cover 1a and the bottom plate, a side inspection position 13 is arranged on the outer side of the box body, a moving device (not shown in the figure) is arranged on the side inspection position 13, a slot (not shown in the figure) matched with the size of the biofilm packing plate 3 is arranged on the side wall 1b, the track 10 extends to the side inspection position 13 through the slot, and the biofilm packing plate 3 can move to the side inspection position 13 through the slot.

A lifting device or a moving device capable of moving the biofilm filler plates 3 is arranged above or on the side face of the box body 1, the biofilm filler plates 3 used for a period of time can be moved to the outside of the box body 1 through ropes and the like for maintenance, the biofilm filler plates 3 can ascend or transversely move along the track 10, automatic operation can be carried out on the lifting device or the moving device through installation of automatic equipment, and labor cost is reduced.

As shown in figure 1, the included angle between the biofilm filler plates 3 and the vertical direction of the box body is 50-65 degrees. More preferably, the included angle between the biofilm filler plate and the vertical direction of the box body is 58-62 degrees.

As shown in fig. 3 and 4, the packing device 8 includes a horizontal bracket 14 fixedly installed on the frame, a connection pipe 16 fixedly installed on the horizontal bracket 14, and a packing unit 15 installed on the connection pipe 16, the connection pipe 16 is connected with a flexible pipe 17, the flexible pipe 17 is connected with a wave device 18, the connection pipe 16 is provided with a plurality of packing units 15 connected in series on the connection pipe, as shown in fig. 5 to 7, the packing unit 15 includes a disk 151 and a plurality of fiber bundles 152 disposed at an edge of the disk 151, an L-shaped connecting branch pipe 19 is arranged at the joint of the disk 151 and the connecting pipe 16, a corrugated pipe 20 with a closed bottom end is arranged at the lower end of the connecting branch pipe 19, the lower end of the corrugated pipe 20 is connected with a disk 151, the connecting pipe 16, the connecting branch pipe 19, the corrugated pipe 20 and the flexible pipe 17 are filled with liquid, and the fluctuation generated by the fluctuation device 18 can be transmitted to the disk 151 through the flexible pipe 17, the connecting pipe 16, the connecting branch pipe 19 and the corrugated pipe 20.

As shown in fig. 11, the wave device 18 includes a permanent magnet 22, a coil 23, a second bellows 24 and a control circuit 25, the control circuit 25 generates a signal to control the direction and magnitude of the current passing through the coil 23, so that the coil 23 generates a changing magnetic field, and the coil 23 is sleeved at the front end of the permanent magnet 22 and generates a certain frequency of mutual movement with the permanent magnet 22. The coil 23 pushes the push plate 26 in front of the coil, the push plate 26 pushes the second bellows 24, the liquid in the second bellows 24 is squeezed to transmit fluctuating energy to the front edge flexible pipe 17, the liquid in the connecting pipe 16 and the connecting branch pipe 19 is pushed to vibrate, the bellows 20 is made to vibrate, and the disk 151 and the fiber bundle 152 are driven to vibrate at high frequency, so that the solution on the disk 151 and the fiber bundle 152 generates fine high-density ripples or jumps out of small liquid beads.

The packing monomer 15 of packing device 8 passes through liquid transmission vibration, directly transmits the vibration of liquid to packing monomer 15 through the pipeline for packing monomer 15 does the high-frequency vibration of small-amplitude, makes to produce ripple and little liquid bead on the liquid film in the absorption process, reduces the resistance of the vapour-liquid exchange process on packing surface, because the vibration of packing adds the biphase turbulent motion of gas-liquid, promotes absorptive going on. Since the vibration is transmitted through the liquid inside the connection pipe, there is almost no loss caused in the vibration connection device, and most of the energy of the vibration is directly transmitted to the packing unit 15. Thus, the energy loss is minimized. If the vibration is transmitted through the connecting rod, only simple vibration can be transmitted, and the amplitude and the frequency of the vibration are difficult to accurately adjust.

In a first embodiment, as shown in fig. 1, the biofilm filler plates 3 can be drawn out from above the box body 1, wherein the wave device 18 can be fixedly installed with the biofilm filler plates 3, the biofilm filler plates 3 comprise an extension part 30 extending out of the box body 1 from the slit, the upper end part of the connecting pipe 16 is directly connected with the flexible pipe 17, the flexible pipe 17 and the wave device 18 are installed on the extension part 30, and the flexible pipe 17 and the wave device 18 can be drawn out of the box body together with the biofilm filler plates 3.

The biofilm carrier plates 3 can be drawn out from above the tank 1 and the wave device 18 can also be mounted on the side of the tank as shown in fig. 4, that is, the flexible pipe 17 and the wave device 18 are mounted on the side where the biofilm carrier plates 3 are drawn out. Since the wave device 18 needs to be connected with a series of control circuits, and is frequently extracted and overhauled along with the biofilm carrier plates 3, which may cause faults, the wave device can be fixedly arranged on the side wall 1b of the box body, and a connecting structure 32 needs to be designed to detachably connect the filler device 8 with the flexible pipe 17. As shown in fig. 8 to 10, a hollow cavity 31 is provided in the lateral bracket 14, a flexible tube 17 is connected to a side end of the hollow cavity 31, a connection structure 32 for connecting the flexible tube 17 and the filling device 8 is provided at the position of the rail 10, the connection structure 32 includes a mounting tube 33 provided at the position of the rail and penetrating through the side wall 1b, the flexible tube 17 mounted in the mounting tube 33, a first elastic membrane 34 provided on the hollow cavity 31, and a second elastic membrane 35 provided at an end of the flexible tube 17, and a telescopic device 36 capable of telescoping the flexible tube is provided on the mounting tube 33. As shown in fig. 9, when the flexible tube 17 and the hollow chamber 31 are connected together, the first elastic membrane 34 and the second elastic membrane 35 are closely attached to each other, so that vibrations in the liquid are not hindered and the vibrations can pass through without being damaged. When it is desired to withdraw biofilm filler plates 3, as shown in fig. 8, extension and retraction device 36 is activated to retract flexible tube 17 fixedly attached to extension and retraction device 36, such that first elastic membrane 34 and second elastic membrane 35 are disengaged, and flexible tube 17 does not interfere with movement of biofilm filler plates 3 on track 10. After the maintenance is finished, the biofilm filler plates 3 are installed in place, the expansion device 36 is started, the flexible pipe 17 fixedly connected to the expansion device 36 is extended out, and the first elastic membrane 34 and the second elastic membrane 35 are compressed.

In the second embodiment, the biofilm filler plates 3 can be drawn out from the side of the box body 1, wherein the wave device 18 can also have two installation modes, except that the wave device 18 is fixedly installed on the side of the biofilm filler plates 3, and when the wave device 18 is detachably installed on the biofilm filler plates 3, the connecting structure 32 is arranged on the top cover 1a, the structure is similar to that of the first embodiment, and the difference is only in the transverse direction and the vertical direction, which is not described in detail.

As shown in fig. 8, a valve 37 is arranged at the end of the hollow cavity 31; as shown in fig. 6 and 7, the disk 151 includes an inner ring 151a and an outer ring 151b, the inner ring 151a is connected to the lower end of the bellows 20, and the inner ring 151a and the outer ring 151b are connected by an outer ring link 151 c.

Claims

1. The utility model provides a biomembrane exhaust-gas treatment equipment, includes the box, sets up the waste gas passageway on the box, sets up spraying system and controlling means on box upper portion, the box includes lateral wall, bottom plate and top cap, set up the biomembrane filler plate in the box, the biomembrane filler plate includes the frame and installs the filler device on the frame, its characterized in that: the exhaust gas channel is arranged transversely.

2. The biofilm exhaust gas treatment device according to claim 1, wherein: the biological film packing plate and the box body are obliquely arranged.

3. The biofilm exhaust gas treatment device according to claim 1 or 2, wherein: the box body is provided with a track matched with the frame, and the frame is installed in the box body in a drawable mode through the track.

4. The biofilm exhaust gas treatment device according to claim 3, wherein: the track is arranged on the side wall, an upper maintenance position is arranged above the box body, the maintenance position is provided with a lifting device, the top cover is provided with a slit matched with the size of the biological film filler plate, the track extends to the upper maintenance position through the slit, and the biological film filler plate can move to the upper maintenance position through the slit;

or the tracks are arranged on the top cover and the bottom plate, the outer side of the box body is provided with a side overhauling position, the side overhauling position is provided with a moving device, the side wall is provided with a slot matched with the size of the biological film packing plate, the tracks extend to the side overhauling position through the slot, and the biological film packing plate can move to the side overhauling position through the slot.

5. The biofilm exhaust gas treatment device according to claim 2, wherein: the included angle between the biological film packing plate and the vertical direction of the box body is 50-65 degrees.

6. The biofilm exhaust gas treatment device according to claim 5, wherein: the included angle between the biofilm filler plate and the vertical direction of the box body is 58-62 degrees.

7. The biofilm exhaust gas treatment device according to any one of claims 3 to 6, wherein: the packing device comprises a transverse support fixedly mounted on a frame, a connecting pipe fixedly mounted on the transverse support and a packing monomer mounted on the connecting pipe, wherein the connecting pipe is connected with a flexible pipe, the flexible pipe is connected with a fluctuation device, the connecting pipe is provided with a plurality of packing monomers connected in series on the connecting pipe, the packing monomer comprises a disc and a plurality of fiber bundles arranged on the edge of the disc, an L-shaped connecting branch pipe is arranged at the joint of the disc and the connecting pipe, the lower end of the connecting branch pipe is provided with a corrugated pipe with a closed bottom end, the lower end of the corrugated pipe is connected with the disc, the connecting pipe, the connecting branch pipe, the corrugated pipe and the flexible pipe are filled with liquid, and fluctuation generated by the fluctuation device can be transmitted to.

8. The biofilm exhaust gas treatment device according to claim 7, wherein: the biomembrane packing plate comprises an extension part extending out of the box body from the slit, the upper end part of the connecting pipe is connected with a flexible pipe, the flexible pipe and the wave device are arranged on the extension part, and the flexible pipe and the wave device can be drawn out of the box body together with the biomembrane packing plate;

or the flexible pipe and the wave device are arranged on the side face of the biological membrane packing plate, a hollow cavity is arranged in the transverse support, the side end of the hollow cavity is connected with the flexible pipe, a connecting structure for connecting the flexible pipe packing device is arranged on the track position, the connecting structure comprises an installation pipe, a flexible pipe, a first elastic membrane and a second elastic membrane, the installation pipe is arranged in the installation pipe, the installation pipe penetrates through the side wall, the first elastic membrane is arranged on the hollow cavity, the second elastic membrane is arranged at the end part of the flexible pipe, and a telescopic device capable of enabling the flexible pipe to stretch is arranged on the installation pipe.

9. The biofilm exhaust gas treatment device according to claim 7, wherein: the wave device comprises a permanent magnet, a coil, a second corrugated pipe filled with liquid and a control circuit, wherein the coil is connected with the control circuit, the coil is sleeved at the front end of the permanent magnet, the front end of the coil is connected with a push plate, the front part of the push plate is connected with the second corrugated pipe, and the second corrugated pipe is communicated with a flexible pipe.

10. The biofilm exhaust gas treatment device according to claim 7, wherein: a valve is arranged at the end part of the hollow cavity; the disc comprises an inner ring and an outer ring, the lower end of the corrugated pipe is connected with the inner ring, and the inner ring is connected with the outer ring through a connecting rod.