Tail gas treatment equipment for amino acid production

Abstract

The invention relates to the technical field of tail gas treatment equipment, in particular to amino acid production tail gas treatment equipment which comprises a dry type filtering device, a main gas supply pipe, a main exhaust pipe and an adsorption bed. The air inlet end of the dry type filtering device is connected with an air inlet pipe, the air outlet end of the dry type filtering device is connected with the main air supply pipe, a plurality of branch air supply pipes are arranged on the main air supply pipe at intervals, the main air supply pipe is connected with the adsorption beds through the branch air supply pipes, and the air outlet ends of the adsorption beds are respectively connected with the main exhaust pipe; the adsorption bed comprises a mounting tank, a spraying cavity is formed at the upper end in the mounting tank, and an aeration tank is formed at the lower end in the mounting tank; a spraying assembly for spraying entering gas is arranged in the spraying cavity, and an aeration assembly is arranged in the aeration tank. According to the technical scheme, in the working process, dust and particulate matter in waste gas can be continuously removed.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas treatment equipment, and particularly to a tail gas treatment equipment for amino acid production. Background Art

[0002] During the production process of amino acids, waste gases will inevitably be generated, including harmful substances such as high-concentration and volatile organic compounds, ammonia, and hydrogen sulfide, which pose a threat to the environment and human health.

[0003] During the production process of amino acids, the specific process of generating waste gases includes the fermentation process, the drying process, and subsequent extraction and refinement processes. In the fermentation process, microorganisms consume raw materials and produce a large number of metabolites, including waste gases such as VOCs (volatile organic compounds) and ammonia. In the drying process, after the fermentation broth undergoes centrifugation, filtration and other steps, it needs to be dried to obtain relevant amino acid products. During the drying process, as the water evaporates, the VOCs and ammonia in the waste gas will further increase. In the extraction and refinement processes, some organic solvents will be used, and during the working process, the volatilization of these organic solvents will also increase the VOCs content in the waste gas.

[0004] In order to be able to treat waste gases and avoid the impact of waste gases on the environment near the factory and the staff, a gas collection device will be set at key positions in relevant workshops, and the waste gases generated during the processing will be centrally treated through the gas collection device.

[0005] In the prior art, when treating this waste gas, the collected waste gas will be introduced into a biological filter for treatment, and the organic matter in the waste gas will be converted into harmless substances through the biological filter. However, in the actual process of collecting waste gas, the waste gas contains dust and particulate matter. When the waste gas enters the biological filter, the dust and particulate matter will enter the biological filter at the same time, causing pollution to the biological filter. Summary of the Invention

[0006] (1) Technical Problems to be Solved

[0007] Aiming at the deficiencies of the prior art, the present invention provides a tail gas treatment equipment for amino acid production, which can remove dust and particulate matter in the waste gas.

[0008] (2) Technical Solutions

[0009] To achieve the above object, an embodiment of the present application provides an exhaust gas treatment device for amino acid production, which includes a dry filtering device, a main supply pipe, a main exhaust pipe, and an adsorption bed; an inlet pipe is connected to the inlet end of the dry filtering device, the outlet end of the dry filtering device is connected to the main supply pipe, a plurality of sub-supply pipes are spaced on the main supply pipe, and the adsorption bed is connected through the sub-supply pipes. The outlet ends of the adsorption bed are respectively connected to the main exhaust pipe; the adsorption bed includes an installation tank, a spraying cavity is formed at the upper end in the installation tank, and an aeration tank is formed at the lower end; a spraying component for spraying the incoming gas is arranged in the spraying cavity, and an aeration component is arranged in the aeration tank.

[0010] Preferably, the dry filtering device includes a filtering box, a filtering belt, a transmission component, and a self-cleaning component; an installation cavity is formed inside the filtering box, an air inlet is formed at one end of the filtering box, and an air outlet is formed at the other end, and the main supply pipe is communicated through the air inlet and the air outlet; the transmission component is arranged in the installation cavity and includes a first support roller, a second support roller, and a first driving motor; the first support roller and the second support roller are parallel to each other, and the first support roller and the second support roller are respectively located on the upper and lower sides of the air inlet and the air outlet. A filtering belt is sleeved on the first support roller and the second support roller, and the filtering belt is driven to rotate with the first support roller and the second support roller, and the filtering belt is located between the air inlet and the air outlet; the first driving motor is fixed outside the filtering box and drives the first support roller or the second support roller to rotate; a set of self-cleaning components are arranged at both ends close to the first support roller and the second support roller, and the self-cleaning components clean the two side surfaces of the filtering belt close to the air inlet.

[0011] Preferably, wind shielding frames are respectively covered at the air inlet and the air outlet inside the filtering box, and the wind shielding frames are rectangular; two wind shielding plates are fixedly arranged in parallel at intervals inside the filtering box, the two wind shielding plates are located between the first support roller and the second support roller and inside the filtering belt; the wind shielding plates are perpendicular to the conveying direction of the filtering belt; a support plate is fixed between the two wind shielding plates, there are two support plates arranged at intervals, the two support plates and the two wind shielding plates are aligned with the wind shielding frame and respectively abut against the two side surfaces of the filtering belt.

[0012] Preferably, the self-cleaning assembly includes a first guiding column, a lead screw, a first guiding block, a first dust suction hopper, a first permanent magnet, a second guiding column, a second guiding block, a second dust suction hopper, a second permanent magnet, and a suction fan; two first guiding columns are arranged at intervals, the two first guiding columns and the lead screw are arranged in parallel, both ends of the first guiding column are fixed between the windshields, and the length direction of the two first guiding columns is perpendicular to the transmission direction of the filter belt; both ends of the lead screw are rotatably connected to the windshields, a second driving motor is arranged outside the windshields, the second driving motor is connected to the lead screw and drives the lead screw to rotate; a first guiding hole and a threaded hole are formed on the first guiding block, the first guiding column is slidably connected through the first guiding hole, and the lead screw is threadedly connected through the threaded hole; a first dust suction hopper is fixedly installed on one side of the first guiding block, and the dust suction port of the first dust suction hopper is located on the side surface close to the filter belt; the first permanent magnet is fixedly installed on the first guiding block and is located on the side surface of the first guiding block close to the filter belt; two second guiding columns are arranged at intervals, and the two second guiding columns are fixed between the two support plates, and the second guiding columns are flush with the first guiding columns; a second guiding hole is formed on the second guiding block, and the second guiding column is slidably connected through the second guiding hole; a second dust suction hopper is fixedly installed on one side of the second guiding block, the dust suction port of the second dust suction hopper is located at one end away from the first dust suction hopper, the second permanent magnet is fixedly installed on the second guiding block and is located on the side surface of the second guiding block close to the first guiding block; the first permanent magnet and the second permanent magnet are aligned, and the first permanent magnet and the second permanent magnet attract each other, and the attraction force can drive the second guiding block to move with the first guiding block; the suction end of the suction fan is connected to a main suction pipe, and two suction branch pipes are respectively arranged on the main suction pipe, the two suction branch pipes are flexible pipes and are respectively communicated with the first dust suction hopper or the second dust suction hopper.

[0013] Preferably, a dust removal device is connected to the main suction pipe, the exhaust end of the suction fan is connected to a return air pipe, the return air pipe is communicated with the intake pipe, and a one-way valve is arranged on the return air pipe, and the one-way valve controls the air in the return air pipe to enter the intake pipe unidirectionally.

[0014] Preferably, the main suction pipe includes a suction pipe section connected to the suction fan and an intake pipe section connected to the suction branch pipes; the suction pipe section and the intake pipe section are located at both ends of the dust removal device;

[0015] The dust removal device includes a bag filter and a connecting pipe; the bag filter includes a first bag filter and a second bag filter, the air inlet end of the first bag filter is connected to the air inlet pipe section of the exhaust air main pipe; the air outlet end of the second bag filter is connected to the exhaust air pipe section of the exhaust air main pipe; the air outlet end of the first bag filter and the air inlet end of the second bag filter are communicated through a connecting pipe; both the first bag filter and the second bag filter include a connecting joint and a filter bag; the connecting joint and the filter bag are detachably connected.

[0016] Preferably, the connecting joint includes an installation pipe, one end of the installation pipe is closed, and the other end forms an installation opening. An air inlet interface is integrally formed on the side wall of the installation pipe near the closed end, and an air outlet interface is integrally formed on the side wall of the installation pipe near the installation opening. A threaded pipe section is integrally formed on the pipe section of the installation pipe inside and between the air inlet interface and the air outlet interface; the filter bag is located inside the installation pipe, and the filter bag includes a wire frame and a filter net; the wire frame is cylindrical, and an installation ring is integrally formed at one end of the wire frame, and the installation ring is threadedly connected to the threaded pipe section; the filter net is arranged inside the wire frame, and the filter net covers the wire frame; a cover is arranged at one end of the installation pipe where the installation opening is located.

[0017] Preferably, a partition plate is integrally formed in the middle of the installation tank, the partition plate is funnel-shaped, and a communication hole is formed in the center; the spraying assembly includes an installation plate, a water supply main pipe, an annular pipe, a spray head and a water supply pump; the installation plate is horizontally arranged in the spraying cavity and is located at the central position of the spraying cavity. A support pipe is fixedly installed on the lower side surface of the installation plate, and the end of the support pipe away from the installation plate passes through the communication hole and is fixed to the bottom of the aeration tank; a water supply pump is connected to the water supply main pipe, the water inlet end of the water supply main pipe is located in the aeration tank, the other end of the water supply main pipe passes through the installation plate, and the annular pipe is connected above the installation plate; the annular pipe is located above the installation plate, and a plurality of support columns are connected between the annular pipe and the installation plate; a plurality of the spray heads are arranged at intervals on the annular pipe; a sub-exhaust pipe is arranged at the upper end of the installation tank, and the sub-exhaust pipe communicates with the main exhaust pipe.

[0018] Preferably, an annular weir plate is integrally formed on the upper side of the installation plate, a water supply branch pipe is connected to the water supply main pipe, a control valve is connected to the water supply branch pipe, the water outlet of the water supply branch pipe is located above the installation plate and supplies water to the inside of the annular weir plate; the air outlet end of the sub-air supply pipe is located below the installation plate.

[0019] Preferably, the air outlet end of the main exhaust pipe is connected to an activated carbon adsorption device.

[0020] (III) Beneficial effects

[0021] The present invention provides an exhaust gas treatment device for amino acid production. Through the provided dry filtering device, after the exhaust gas is concentrated, when the exhaust gas passes through the dry filtering device, dust and particulate matter in the exhaust gas are filtered. In the dry filtering device, by setting a filter belt, a self-cleaning component and a transmission component, during the working process, the filter belt can be cleaned regularly and continuously, avoiding blockage of the filter belt during use and ensuring the permeability of the filter belt. When processing amino acids, during the continuous extraction of exhaust gas, the exhaust gas can be initially filtered continuously, reducing the number of times of shutdown maintenance of the filter belt. During use, in order to avoid leakage of exhaust gas and at the same time to be able to treat the extracted dust and other impurities. A dust removal device is connected to the main exhaust pipe, and by maintaining and servicing the dust removal device, continuous operation without shutdown can be achieved. During the continuous extraction of exhaust gas, the exhaust gas can be continuously treated.

[0022] A spraying component is arranged in the adsorption bed. Through the provided annular weir plate and the nozzle above, when the exhaust gas discharged from the sub-feed gas pipe enters below the mounting plate, the exhaust gas will first pass through the water curtain and then be sprayed by the nozzle again, enabling the gases soluble in water in the exhaust gas to be fully mixed with water and improving the exhaust gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of an exhaust gas treatment device for amino acid production according to the present invention;

[0024] Figure 2 is a schematic diagram highlighting the connection relationship between the dry filtering device and the dust removal device according to the present invention;

[0025] Figure 3 is a cross-sectional view highlighting the dry filtering device according to the present invention;

[0026] Figure 4 highlighting the Figure 3 magnified schematic diagram of structure A in the present invention;

[0027] Figure 5 is a cross-sectional view highlighting the installation structure of the lead screw and the second drive motor according to the present invention;

[0028] Figure 6 is a cross-sectional view highlighting the second bag filter according to the present invention;

[0029] Figure 7 is a cross-sectional view highlighting the adsorption bed according to the present invention.

[0030] Reference numerals in the drawings:

[0031] 100, Dry filtration device; 110, Filtration box; 111, Installation cavity; 112, Windshield frame; 113, Windshield plate; 114, Support plate; 115, Brush; 120, Filter belt; 130, Transmission assembly; 131, First support roller; 132, Second support roller; 133, First drive motor; 200, Self-cleaning assembly; 210, First guide post; 211, Lead screw; 212, Second drive motor; 213, First guide block; 2131, First guide hole; 2132, Threaded hole; 214, First permanent magnet; 215, First dust suction hopper; 220, Second guide post; 221, Second guide block; 2211, Second; Guide hole; 222, Second dust suction hopper; 223, Second permanent magnet; 230, Exhaust fan; 231, Main exhaust pipe; 2311, Exhaust pipe section; 2312, Air inlet pipe section; 232, Exhaust branch pipe; 233, Return air pipe; 2331, Check valve; 300, Dust removal device; 310, First bag filter; 320, Second bag filter; 321, Connection joint; 3211, Installation pipe; 3212, Installation port; 3213, Air inlet interface; 3214, Air outlet interface; 3215, Threaded pipe section; 322, Filter bag; 3221, Grid; 3222, Filter net; 3223, Installation ring; 323, Cover; 330, Connection pipe; 400, Main gas supply pipe; 410, Branch gas supply pipe; 500, Main exhaust pipe; 600, Adsorption bed; 610, Installation tank; 611, Spraying cavity; 612, Aeration tank; 613, Partition board; 6131, Communication hole; 620, Spraying assembly; 621, Installation board; 622, Support pipe; 623, Main water supply pipe; 624, Annular pipe; 6241, Support column; 625, Sprinkler head; 626, Water supply pump; 627, Annular weir plate; 628, Water supply branch pipe; 6281, Control valve; 630, Aeration assembly; 700, Air inlet pipe; 800, Activated carbon adsorption device. Detailed implementation

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment

[0034] The present invention provides a tail gas treatment device for amino acid production. See Figure 1, including a dry filtering device 100, a main air supply pipe 400, a main exhaust pipe 500, and an adsorption bed 600. The intake end of the dry filtering device 100 is connected to an intake pipe 700, the outlet end of the dry filtering device 100 is connected to the main air supply pipe 400. A plurality of sub-air supply pipes 410 are arranged at intervals on the main air supply pipe 400 and are connected to the adsorption bed 600 through the sub-air supply pipes 410. The outlet ends of the adsorption bed 600 are respectively connected to the main exhaust pipe 500. The adsorption bed 600 includes an installation tank 610. A spraying chamber 611 is formed at the upper end inside the installation tank 610, and an aeration tank 612 is formed at the lower end. A spraying assembly 620 for spraying the incoming gas is arranged in the spraying chamber 611, and an aeration assembly 630 is arranged in the aeration tank 612. During operation, the collected waste gas enters through the main air supply pipe 400. When passing through the dry filtering device 100, dust and particulate matter in the waste gas are filtered and absorbed. After filtering, the waste gas enters the adsorption bed 600 for harmless treatment. The provided dry filtering device 100 can filter dust and particles in the waste gas to prevent them from entering the adsorption bed 600.

[0035] See Figures 2 - 6 , specifically, the dry filtering device 100 includes a filtering box 110, a filtering belt 120, a transmission assembly 130, and a self-cleaning assembly 200.

[0036] An installation cavity 111 is formed inside the filtering box 110. One end of the filtering box 110 forms an air inlet, and the other end forms an air outlet, and the main air supply pipe 400 is communicated through the air inlet and the air outlet. When the waste gas passes through the filtering box 110, it is filtered.

[0037] The transmission assembly 130 is arranged in the installation cavity 111 and includes a first support roller 131, a second support roller 132, and a first driving motor 133.

[0038] The first support roller 131 and the second support roller 132 are parallel to each other, and the first support roller 131 and the second support roller 132 are respectively located on the upper and lower sides of the air inlet and the air outlet. A filtering belt 120 is sleeved on the first support roller 131 and the second support roller 132, and the filtering belt 120 is driven to rotate along with the first support roller 131 and the second support roller 132. The filtering belt 120 is located in the middle of the air inlet and the air outlet; that is, the part of the filtering belt 120 between the first support roller 131 and the second support roller 132 is perpendicular to the connecting line direction of the air inlet and the air outlet. When the waste gas enters from the air inlet, it needs to pass through the filtering belt 120 and is filtered when passing through the position of the filtering belt 120. After filtering, it is discharged from the air outlet and returns to the main air supply pipe 400 again.

[0039] The first driving motor 133 is fixed outside the filter box 110 and drives the first support roller 131 or the second support roller 132 to rotate. During operation, the first driving motor 133 controls the first support roller 131 or the second support roller 132 to rotate a set angle each time, so that the filter belt 120 moves a set distance each time. After moving the set distance, the self-cleaning assembly 200 cleans the filter belt 120. After the cleaning is completed, the first driving motor 133 controls the filter belt 120 to move the set distance again. After continuously cleaning the part of the filter belt 120 that needs to be cleaned, the first driving motor 133 stops. By cleaning the filter belt 120, its permeability can be maintained during continuous operation, ensuring the filtering effect.

[0040] A set of self-cleaning assemblies 200 are provided at both ends close to the first support roller 131 and the second support roller 132. The self-cleaning assembly 200 cleans the two sides of the filter belt 120 close to the air inlet. It should be noted that since the filter belt 120 is wound around the first support roller 131 and the second support roller 132 for transmission, by respectively arranging the self-cleaning assemblies 200 at both ends close to the first support roller 131 and the second support roller 132, after the filter belt 120 filters for a period of time, the dust on the two sides of the filter belt 120 can be cleaned, thereby ensuring the filtering effect of the filter belt 120 on the waste gas.

[0041] Windshield frames 112 are provided inside the filter box 110 and at the air inlet and the air outlet. The windshield frames 112 are rectangular. One end covers the air inlet or the air outlet, and the other end abuts against the filter belt 120.

[0042] Two windshield plates 113 are fixedly arranged in parallel at intervals inside the filter box 110. The two windshield plates 113 are located between the first support roller 131 and the second support roller 132 and are inside the filter belt 120; the windshield plates 113 are perpendicular to the transmission direction of the filter belt 120; a support plate 114 is fixed between the two windshield plates 113. The support plate 114 is perpendicular to the windshield plates 113. There are two support plates 114 arranged at intervals. The two support plates 114 and the two windshield plates 113 are aligned with the windshield frame 112 and respectively abut against the two side surfaces of the filter belt 120. That is, the windshield frame 112 abuts against the filter belt 120 from the outside, and the support plate 114 and the windshield plates 113 abut against the filter belt 120 from the inside. Further, in order to prevent dust from escaping from the abutting positions, brushes 115 are provided on the side edges of the windshield frame 112, the windshield plates 113, and the support plate 114 close to the filter belt 120. The brushes 115 block the dust.

[0043] The self-cleaning assembly 200 includes a first guide post 210, a lead screw 211, a first guide block 213, a first dust suction hopper 215, a first permanent magnet 214, a second guide post 220, a second guide block 221, a second dust suction hopper 222, a second permanent magnet 223, and a suction fan 230.

[0044] There are two first guide columns 210 arranged at intervals. The two first guide columns 210 and the lead screw 211 are arranged in parallel. The two ends of the first guide column 210 are fixed between the windshield frames 112. The length directions of the two first guide columns 210 are parallel to the filter belt 120 and perpendicular to the driving direction of the filter belt 120. The two ends of the lead screw 211 are rotatably connected to the windshield frames 112. A second driving motor 212 is arranged outside the windshield frames 112. The second driving motor 212 is connected to the lead screw 211 and drives the lead screw 211 to rotate.

[0045] The first guide block 213 is provided with a first guide hole 2131 and a threaded hole 2132. The first guide column 210 is slidably connected through the first guide hole 2131, and the lead screw 211 is threadedly connected through the threaded hole 2132. When the lead screw 211 rotates, it will drive the first guide block 213 to slide along the length direction of the first guide column 210. Further, travel switches are arranged at both ends of the first guide column 210 to control the forward and reverse rotations of the first driving motor 133 through the travel switches. When the first guide block 213 moves to both ends, the first guide block 213 abuts against the travel switches, and the travel switches control the first driving motor 133 to rotate in the reverse direction, driving the first guide block 213 to move in the reverse direction.

[0046] A first dust suction hopper 215 is fixedly installed on one side of the first guide block 213. The dust suction port of the first dust suction hopper 215 is located on the side surface close to the filter belt 120. The first permanent magnet 214 is fixedly installed on the first guide block 213 and is located on the side surface of the first guide block 213 close to the filter belt 120. When negative pressure is provided to the first dust suction hopper 215, the first dust suction hopper 215 can suck the dust on the filter belt 120.

[0047] There are two second guide posts 220 arranged at intervals, and the two second guide posts 220 are fixed between two support plates 114. The second guide posts 220 are flush with the first guide posts 210, that is, the two are parallel to each other and aligned at both ends. A second guide hole 2211 is provided on the second guide block 221, and the second guide block 221 is slidably connected to the second guide post 220 through the second guide hole 2211. A second dust suction hopper 222 is fixedly installed on one side of the second guide block 221. The dust suction port of the second dust suction hopper 222 is located at one end away from the first dust suction hopper 215. A second permanent magnet 223 is fixedly installed on the second guide block 221 and is located on the side surface of the second guide block 221 close to the first guide block 213. The first permanent magnet 214 and the second permanent magnet 223 are aligned, and the first permanent magnet 214 and the second permanent magnet 223 attract each other, and the attraction force can drive the second guide block 221 to move with the first guide block 213. When the first guide block 213 moves, it will drive the first permanent magnet 214 to move synchronously. Since the first permanent magnet 214 and the second permanent magnet 223 attract each other, during the movement of the first permanent magnet 214, it will drive the second permanent magnet 223 to move synchronously, thereby driving the second guide block 221 to move along the length direction of the second guide post 220.

[0048] The air extraction end of the exhaust fan 230 is connected to an air extraction main pipe 231. There are two air extraction branch pipes 232 respectively arranged on the air extraction main pipe 231. The two air extraction branch pipes 232 are flexible pipes and are respectively communicated with the first dust suction hopper 215 or the second dust suction hopper 222. Specifically, one end of the air extraction branch pipe 232 close to the air extraction main pipe 231 passes through the wind shield frame 112 or the support plate 114, and the other end swings with the first dust suction hopper 215 or the second dust suction hopper 222.

[0049] Through the self-cleaning assembly 200 provided, the filter belt 120 can be cleaned regularly and continuously, avoiding the blockage of the filter belt 120 during use and ensuring the permeability of the filter belt 120. When processing amino acids, during the continuous extraction of exhaust gas, the exhaust gas can be initially filtered continuously, reducing the number of shutdowns for maintenance of the filter belt 120.

[0050] During use, in order to avoid the leakage of exhaust gas and at the same time to be able to treat the extracted dust and other impurities. A dust removal device 300 is connected to the air extraction main pipe 231. The exhaust end of the exhaust fan 230 is connected to a return air pipe 233. The return air pipe 233 is communicated with the intake pipe 700. A one-way valve 2331 is provided on the return air pipe 233, and the one-way valve 2331 controls the one-way entry of the air in the return air pipe 233 into the intake pipe 700. During continuous operation, through the maintenance of the dust removal device 300, continuous operation without shutdown can be achieved. During the continuous extraction of exhaust gas, the exhaust gas can be treated continuously.

[0051] The exhaust main pipe 231 includes an exhaust pipe section 2311 connected to the exhaust fan 230 and an air inlet pipe section 2312 connected to the exhaust branch pipe 232; the exhaust pipe section 2311 and the air inlet pipe section 2312 are located at both ends of the dust removal device 300.

[0052] The dust removal device 300 includes a bag filter and a connecting pipe 330.

[0053] The bag filter includes a first bag filter 310 and a second bag filter 320. The air inlet end of the first bag filter 310 is connected to the air inlet pipe section 2312 of the exhaust main pipe 231; the air outlet end of the second bag filter 320 is connected to the exhaust pipe section 2311 of the exhaust main pipe 231; the air outlet end of the first bag filter 310 and the air inlet end of the second bag filter 320 are communicated through the connecting pipe 330. Both the first bag filter 310 and the second bag filter 320 include a connecting joint 321 and a filter bag 322; the connecting joint 321 and the filter bag 322 are detachably connected. During the working process, the dust extracted from the self-cleaning assembly 200 is absorbed by the provided first bag filter 310 and second bag filter 320, and the first bag filter 310 and the second bag filter 320 are cleaned or replaced regularly. Specifically, the cleaning time is selected during the period when the self-cleaning assembly 200 is not working.

[0054] The connecting joint 321 includes an installation pipe 3211. One end of the installation pipe 3211 is closed, and the other end forms an installation port 3212. An air inlet interface 3213 is integrally formed on the side wall of the installation pipe 3211 near the closed end, and an air outlet interface 3214 is integrally formed on the side wall of the installation pipe 3211 near the installation port 3212. A threaded pipe section 3215 is integrally formed on the pipe section of the installation pipe 3211 inside and between the air inlet interface 3213 and the air outlet interface 3214.

[0055] The filter bag 322 is located inside the installation pipe 3211. The filter bag 322 includes a wire frame 3221 and a filter net 3222; the wire frame 3221 is cylindrical, and an installation ring 3223 is integrally formed at one end of the wire frame 3221. The installation ring 3223 is threadedly connected to the threaded pipe section 3215; the filter net 3222 is arranged inside the wire frame 3221, and the filter net 3222 covers the wire frame 3221; a cover 323 is arranged at one end of the installation pipe 3211 where the installation port 3212 is located. During filtration, air enters through the air inlet interface 3213, enters the inside of the wire frame 3221 through the installation ring 3223 inside the installation pipe 3211, and finally is discharged through the air outlet interface 3214 after passing through the filter net 3222.

[0056] When cleaning or maintenance is required, select the first bag filter 310 or the second bag filter 320, open the cover 323, take out the inner grid 3221, and after taking it out, close the cover 323. It can continuously collect dust, complete the cleaning of dust, and at the same time avoid the leakage of waste gas.

[0057] See Figure 7 , in the middle of the installation tank 610, a partition 613 is integrally formed. The partition 613 is funnel-shaped, and a communication hole 6131 is formed in the center. A spray cavity 611 is formed above the partition 613, and an aeration tank 612 is formed below the partition 613.

[0058] The spray assembly 620 includes a mounting plate 621, a water supply main pipe 623, an annular pipe 624, a nozzle 625, and a water supply pump 626.

[0059] The mounting plate 621 is horizontally arranged in the spray cavity 611 and is located at the center of the spray cavity 611. A support pipe 622 is fixedly installed on the lower side of the mounting plate 621. One end of the support pipe 622 away from the mounting plate 621 passes through the communication hole 6131 and is fixed to the bottom of the aeration tank 612.

[0060] A water supply pump 626 is connected to the water supply main pipe 623. The water inlet end of the water supply main pipe 623 is located in the aeration tank 612. The other end of the water supply main pipe 623 passes through the mounting plate 621 and is connected to the annular pipe 624 above the mounting plate 621. During operation, water is supplied to the annular pipe 624.

[0061] The annular pipe 624 is located above the mounting plate 621. A plurality of support columns 6241 are connected between the annular pipe 624 and the mounting plate 621; a plurality of nozzles 625 are arranged at intervals on the annular pipe 6; a sub-exhaust pipe is arranged at the upper end of the installation tank 610, and the sub-exhaust pipe is communicated with the main exhaust pipe 500. When the waste gas enters the spray cavity 611, water is sprayed into the spray cavity 611 through a plurality of nozzles 625, thereby absorbing the water-soluble gas in the waste gas.

[0062] An annular weir plate 627 is integrally formed on the upper side of the mounting plate 621. A water supply branch pipe 628 is connected to the water supply main pipe 623. A control valve 6281 is connected to the water supply branch pipe 628. The water outlet of the water supply branch pipe 628 is located above the mounting plate 621 and supplies water to the inner side of the annular weir plate 627; during the working process, by adjusting the control valve 6281, the water supply main pipe 623 can supply sufficient water to the nozzles 625 and supply water to the water supply branch pipe 628 at the same time.

[0063] The outlet end of the sub-supply gas pipe 410 is located below the mounting plate 621. By means of the arranged annular weir plate 627, after continuously supplying water into it, a water curtain will be formed around the mounting plate 621. When the waste gas discharged from the sub-supply gas pipe 410 enters below the mounting plate 621, the waste gas will first pass through the water curtain and then be sprayed again by the spray head 625, so that the gases soluble in water in the waste gas can be fully mixed with water.

[0064] When VOCs, ammonia, etc. are dissolved in water, in the aeration tank 612, through the continuous supply of oxygen by the aeration component 630, the microorganisms in the aeration tank 612 can harmlessly treat the macromolecular organic substances dissolved in water.

[0065] An activated carbon adsorption device 800 is connected to the outlet end of the main exhaust pipe 500. The non-water-soluble waste gas can be absorbed by the activated carbon adsorption device 800.

[0066] The present invention provides a tail gas treatment device for amino acid production. Through the arranged dry filtering device 100, after the waste gas is concentrated, when the waste gas passes through the dry filtering device 100, the dust and particulate matters in the waste gas are filtered. In the dry filtering device 100, by arranging the filter belt 120, the self-cleaning component 200 and the transmission component 130, during the working process, the filter belt 120 can be cleaned regularly and continuously, avoiding the blockage of the filter belt 120 during use and ensuring the permeability of the filter belt 120. When continuously extracting waste gas during the processing of amino acids, the waste gas can be initially filtered continuously, reducing the number of shutdowns for maintaining the filter belt 120. During use, in order to avoid the leakage of waste gas and at the same time to be able to treat the extracted dust and other impurities. A dust removal device 300 is connected to the main exhaust pipe 231. By maintaining and servicing the dust removal device 300, continuous operation without shutdown can be achieved. During the continuous extraction of waste gas, the waste gas can be continuously treated.

[0067] A spray component 620 is arranged in the adsorption bed 600. By means of the arranged annular weir plate 627 and the spray head 625 above, when the waste gas discharged from the sub-supply gas pipe 410 enters below the mounting plate 621, the waste gas will first pass through the water curtain and then be sprayed again by the spray head 625, so that the gases soluble in water in the waste gas can be fully mixed with water, improving the waste gas treatment effect.

[0068] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0069] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium; it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0070] The above-described embodiments only represent the implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. An exhaust gas treatment device for amino acid production, characterized in that, It includes a dry filtering device (100), a main air supply pipe (400), a main exhaust pipe (500), and an adsorption bed (600); The air inlet end of the dry filtering device (100) is connected to an air inlet pipe (700), the air outlet end of the dry filtering device (100) is connected to the main air supply pipe (400), a plurality of sub-air supply pipes (410) are arranged at intervals on the main air supply pipe (400), and the adsorption bed (600) is connected through the sub-air supply pipes (410), and the air outlet ends of the adsorption bed (600) are respectively connected to the main exhaust pipe (500); The adsorption bed (600) includes an installation tank (610), a spraying cavity (611) is formed at the upper end in the installation tank (610), and an aeration tank (612) is formed at the lower end; a spraying assembly (620) for spraying the incoming gas is arranged in the spraying cavity (611), and an aeration assembly (630) is arranged in the aeration tank (612).

2. The tail gas treatment equipment for amino acid production according to claim 1, wherein: The dry filtering device (100) includes a filtering box (110), a filtering belt (120), a transmission assembly (130), and a self-cleaning assembly (200); An installation cavity (111) is formed inside the filtering box (110), an air inlet is formed at one end of the filtering box (110), an air outlet is formed at the other end, and the main air supply pipe (400) is communicated through the air inlet and the air outlet; The transmission assembly (130) is arranged in the installation cavity (111) and includes a first support roller (131), a second support roller (132), and a first driving motor (133); The first support roller (131) and the second support roller (132) are parallel to each other, and the first support roller (131) and the second support roller (132) are respectively located on the upper and lower sides of the air inlet and the air outlet. A filtering belt (120) is sleeved on the first support roller (131) and the second support roller (132), and the filtering belt (120) is driven to move as the first support roller (131) and the second support roller (132) rotate. The filtering belt (120) is located between the air inlet and the air outlet; The first driving motor (133) is fixed outside the filtering box (110) and drives the first support roller (131) or the second support roller (132) to rotate; One set of the self-cleaning assembly (200) is arranged at both ends close to the first support roller (131) and the second support roller (132), and the self-cleaning assembly (200) cleans the two side surfaces of the filtering belt (120) close to the air inlet.

3. The tail gas treatment device for amino acid production according to claim 2, characterized in that: Windshield frames (112) are respectively covered inside the filtering box (110) at the air inlet and the air outlet, and the windshield frames (112) are rectangular; Two windshield plates (113) are fixedly arranged in parallel at intervals inside the filtering box (110). The two windshield plates (113) are located between the first support roller (131) and the second support roller (132) and inside the filtering belt (120); the windshield plates (113) are perpendicular to the conveying direction of the filtering belt (120); A support plate (114) is fixed between the two windshields (113). There are two support plates (114) arranged at intervals. The two support plates (114) and the two windshields (113) are aligned with the windshield frame (112) and are respectively in contact with the two side surfaces of the filter belt (120).

4. The tail gas treatment device for amino acid production according to claim 3, characterized in that: The self-cleaning assembly (200) includes a first guiding column (210), a lead screw (211), a first guiding block (213), a first dust suction hopper (215), a first permanent magnet (214), a second guiding column (220), a second guiding block (221), a second dust suction hopper (222), a second permanent magnet (223) and a suction fan (230); There are two first guiding columns (210) arranged at intervals. The two first guiding columns (210) and the lead screw (211) are arranged in parallel. The two ends of the first guiding column (210) are fixed between the windshield frames (112). The length direction of the two first guiding columns (210) is perpendicular to the transmission direction of the filter belt (120). The two ends of the lead screw (211) are rotatably connected to the windshield frame (112). A second driving motor (212) is arranged on the outer side of the windshield frame (112). The second driving motor (212) is connected to the lead screw (211) and drives the lead screw (211) to rotate. A first guiding hole (2131) and a threaded hole (2132) are formed in the first guiding block (213). The first guiding column (210) is slidably connected through the first guiding hole (2131), and the lead screw (211) is threadedly connected through the threaded hole (2132). A first dust suction hopper (215) is fixedly installed on one side of the first guiding block (213). The dust suction port of the first dust suction hopper (215) is located on the side surface close to the filter belt (120). The first permanent magnet (214) is fixedly installed on the first guiding block (213) and is located on the side surface of the first guiding block (213) close to the filter belt (120); There are two second guiding columns (220) arranged at intervals. The two second guiding columns (220) are fixed between the two support plates (114). The second guiding column (220) is flush with the first guiding column (210). A second guiding hole (2211) is formed in the second guiding block (221), and the second guiding column (220) is slidably connected through the second guiding hole (2211). A second dust suction hopper (222) is fixedly installed on one side of the second guiding block (221). The dust suction port of the second dust suction hopper (222) is located at the end far from the first dust suction hopper (215). The second permanent magnet (223) is fixedly installed on the second guiding block (221) and is located on the side surface of the second guiding block (221) close to the first guiding block (213); The first permanent magnet (214) and the second permanent magnet (223) are aligned, and the first permanent magnet (214) and the second permanent magnet (223) attract each other, and the attraction force can drive the second guiding block (221) to move along with the first guiding block (213); The air suction end of the air extractor (230) is connected with an air suction main pipe (231). Two air suction branch pipes (232) are respectively arranged on the air suction main pipe (231). The two air suction branch pipes (232) are flexible pipes and are respectively communicated with the first dust suction hopper (215) or the second dust suction hopper (222).

5. The tail gas treatment equipment for amino acid production according to claim 4, characterized in that: A dust removal device (300) is connected to the air suction main pipe (231). The air exhaust end of the air extractor (230) is connected with a return air pipe (233). The return air pipe (233) is communicated with the air inlet pipe (700). A one-way valve (2331) is arranged on the return air pipe (233). The one-way valve (2331) controls the air in the return air pipe (233) to enter the air inlet pipe (700) unidirectionally.

6. The tail gas treatment equipment for amino acid production according to claim 5, characterized in that: The air suction main pipe (231) includes an air suction pipe section (2311) connected to the air extractor (230) and an air inlet pipe section (2312) connected to the air suction branch pipe (232); the air suction pipe section (2311) and the air inlet pipe section (2312) are located at both ends of the dust removal device (300); The dust removal device (300) includes a bag filter and a connecting pipe (330); The bag filter includes a first bag filter (310) and a second bag filter (320). The air inlet end of the first bag filter (310) is connected to the air inlet pipe section (2312) of the air suction main pipe (231); the air outlet end of the second bag filter (320) is connected to the air suction pipe section (2311) of the air suction main pipe (231); The air outlet end of the first bag filter (310) and the air inlet end of the second bag filter (320) are communicated through the connecting pipe (330); Both the first bag filter (310) and the second bag filter (320) include a connecting joint (321) and a filter bag (322); the connecting joint (321) and the filter bag (322) are detachably connected.

7. The tail gas treatment equipment for amino acid production according to claim 6, characterized in that: The connecting joint (321) includes a mounting pipe (3211). One end of the mounting pipe (3211) is closed, and the other end forms a mounting opening (3212). An air inlet interface (3213) is integrally formed on the side wall of the mounting pipe (3211) near the closed end. An air outlet interface (3214) is integrally formed on the side wall of the mounting pipe (3211) near the mounting opening (3212). A threaded pipe section (3215) is integrally formed on the pipe section of the mounting pipe (3211) inside and between the air inlet interface (3213) and the air outlet interface (3214); The filter bag (322) is located inside the installation pipe (3211). The filter bag (322) includes a wire frame (3221) and a filter mesh (3222); the wire frame (3221) is cylindrical, and an installation ring (3223) is integrally formed at one end of the wire frame (3221), and the installation ring (3223) is threadedly connected to the threaded pipe section (3215); the filter mesh (3222) is arranged inside the wire frame (3221), and the filter mesh (3222) covers the wire frame (3221). A cover (323) is provided at one end of the installation pipe (3211) and located at the installation port (3212).

8. The tail gas treatment device for amino acid production according to claim 1, characterized in that: A partition plate (613) is integrally formed in the middle of the installation tank (610). The partition plate (613) is funnel-shaped, and a communication hole (6131) is formed at the center. The spraying assembly (620) includes an installation plate (621), a water supply main pipe (623), an annular pipe (624), spray nozzles (625) and a water supply pump (626). The installation plate (621) is horizontally arranged in the spraying cavity (611) and located at the central position of the spraying cavity (611). A support pipe (622) is fixedly installed on the lower side of the installation plate (621). The end of the support pipe (622) far from the installation plate (621) passes through the communication hole (6131) and is fixed to the bottom of the aeration tank (612). A water supply pump (626) is connected to the water supply main pipe (623). The water inlet end of the water supply main pipe (623) is located in the aeration tank (612). The other end of the water supply main pipe (623) passes through the installation plate (621) and is connected to the annular pipe (624) above the installation plate (621). The annular pipe (624) is located above the installation plate (621). A plurality of support columns (6241) are connected between the annular pipe (624) and the installation plate (621); a plurality of the spray nozzles (625) are arranged at intervals on the annular pipe (624). A sub-exhaust pipe is provided at the upper end of the installation tank (610), and the sub-exhaust pipe communicates with the main exhaust pipe (500).

9. The tail gas treatment device for amino acid production according to claim 8, characterized in that: An annular weir plate (627) is integrally formed on the upper side of the installation plate (621). A water supply branch pipe (628) is connected to the water supply main pipe (623). A control valve (6281) is connected to the water supply branch pipe (628). The water outlet of the water supply branch pipe (628) is located above the installation plate (621) and supplies water to the inside of the annular weir plate (627). The air outlet end of the sub-air supply pipe (410) is located below the installation plate (621).

10. The tail gas treatment equipment for amino acid production according to claim 1, characterized in that: The air outlet end of the main exhaust pipe (500) is connected to an activated carbon adsorption device (800).

Images