CN116212578A

CN116212578A - Multistage mixed filtration type organic waste gas adsorption and purification system

Info

Publication number: CN116212578A
Application number: CN202211642050.0A
Authority: CN
Inventors: 孙绍堂; 孙颖; 李倩
Original assignee: Guangzhou JP EPE Co Ltd
Current assignee: Guangzhou JP EPE Co Ltd
Priority date: 2022-12-20
Filing date: 2022-12-20
Publication date: 2023-06-06

Abstract

The invention discloses a multistage mixing filtration type organic waste gas adsorption purification system which comprises an adsorption tower, a first exhaust fan, an adsorption filter layer, a desorption tower, a circulating heating fan, a second gas-solid mixer and a second filter screen plate, wherein the adsorption filter layer is arranged in the adsorption tower in a multistage manner; the adsorption filter layer comprises a first gas-solid mixer and a first filter screen plate, and the first gas-solid mixer is arranged above the corresponding first filter screen plate; the first exhaust fan is connected with a first exhaust port of the bottom adsorption filtration layer, and the first gas-solid mixer is connected with a first discharge port of the next adsorption filtration layer; the second gas-solid mixer is arranged above the second filter screen plate; the circulating heating fan is connected with a second exhaust port at the bottom of the desorption tower; the first discharge hole of the top adsorption filtration layer is connected with the second gas-solid mixer, and the second discharge hole above the second filter screen plate is connected with the first gas-solid mixer of the bottom adsorption filtration layer.

Description

Multistage mixed filtration type organic waste gas adsorption and purification system

Technical Field

The application relates to the technical field of environmental protection, in particular to a multistage mixing filtration type organic waste gas adsorption purification system.

Background

Volatile Organic Compounds (VOCs) are a type of volatile organic compounds, most of which are toxic and seriously harm human health. With the continuous development of industry, the higher the content of VOCs in the waste gas generated by industry, the serious pollution to the atmosphere can be caused if the waste gas is directly discharged into the air. Therefore, before the exhaust gas is discharged, VOCs in the exhaust gas need to be treated so as to reduce the harm of the VOCs to the atmosphere.

At present, the technology is basically a fixed adsorption bed technology in the application market of VOCs organic waste gas treatment, whether activated carbon, carbon fiber, adsorption resin, zeolite molecular sieve, honeycomb adsorption rotating wheel and the like are selected by a process route, the basic form is a fixed bed structure, and the defects of the fixed adsorption bed in the long-term use process are gradually displayed, so that the popularization and development of the VOCs organic waste gas treatment technology of the fixed bed structure are influenced. The fixed bed adsorption technique suffers from the following drawbacks: 1) The adsorption efficiency is continuously reduced along with the increase of the service time, and the life cycle is short; 2) The regeneration efficiency of the regeneration and utilization technology is low, and potential safety hazards exist; 3) The secondary pollution problem exists in the waste activated carbon and other adsorption fillers; 4) The impact load resistance is poor in variability, the adsorption efficiency of the fixed bed is unstable, and the standard emission is unstable; 5) The post-treatment process is mostly different forms of thermal oxidation treatment, and the carbon emission is increased.

Disclosure of Invention

The invention provides a multistage mixing filtration type organic waste gas adsorption purification system, which replaces the existing single static fixed adsorption by a dynamic flow adsorption technology, improves waste gas purification efficiency, improves the recycling rate of adsorption fillers, reduces operation cost and prolongs the service life of the purification system.

In a first aspect, an embodiment of the present invention provides a multistage hybrid filtration type organic exhaust gas adsorption purification system, including: adsorption purification device and desorption regenerating unit, wherein:

the adsorption purification device comprises an adsorption tower, a first exhaust fan and a plurality of stages of adsorption filter layers which are arranged in the adsorption tower in a layered mode, each stage of adsorption filter layer comprises a first gas-solid mixer, a first filter screen plate, a first jet fan and a first discharge pipe, the first gas-solid mixer comprises a first desorption filler input end, an organic waste gas input end, a first mixing output end and a first unpowered pneumatic impeller, the first gas-solid mixer is arranged above the corresponding first filter screen plate, and the first mixing output end faces the corresponding first filter screen plate; the input end of the first exhaust fan is connected with a first exhaust port formed in the wall of the adsorption tower below the first filter screen plate at the bottom layer, and a first discharge port formed in the wall of the adsorption tower above the first filter screen plate is connected with a first desorption filler input end of the upper layer through the first discharge pipe and the first jet fan; the organic waste gas is adsorbed and filtered after being fully mixed with the adsorption filler through the first gas-solid mixer, passes through the adsorption filler deposited on the first filter screen plate, is adsorbed and filtered again, and sequentially passes through each adsorption filter layer;

The desorption regeneration device comprises a desorption tower, a circulating heating fan, a second discharging pipe, a second jet flow fan, an organic steam circulating heater, an organic steam circulating pipeline, a second gas-solid mixer and a second filter screen plate, wherein the second gas-solid mixer and the second filter screen plate are arranged in the desorption tower, the second gas-solid mixer comprises a second desorption filler input end, a saturated filler conveying pipe on the desorption regeneration device, a second mixing output end and a second unpowered pneumatic impeller, the second gas-solid mixer is arranged above the second filter screen plate, and the second mixing output end faces the second filter screen plate; the input end of the circulating heating fan is connected with a second exhaust port formed in the wall of the desorption tower below the second filter screen plate; the saturated filler conveying pipe on the desorption regeneration device is connected with the output end of the circulating heating fan through the organic steam circulating heater and the organic steam circulating pipeline;

the first bin outlet in top layer is connected with the second desorption filler input, the second bin outlet of seting up on the desorption tower wall of second filter screen board top is through the second row material pipe with the first desorption filler input in bottom is connected to the second efflux fan.

Optionally, each layer the adsorption filtration layer still includes first honeycomb duct, and the lower floor adsorption filtration layer in two adjacent adsorption filtration layers still includes the second honeycomb duct, the first mixed output of same layer is connected to the input of first honeycomb duct, the output of first honeycomb duct is towards the first filter screen plate of same layer, the output of first honeycomb duct is greater than the input of first honeycomb duct, the organic waste gas input of same layer is connected to the output of second honeycomb duct, the input of second honeycomb duct is towards the first filter screen plate of upper strata, the input of second honeycomb duct is greater than the output of second honeycomb duct, wherein:

the second guide pipe is used for guiding organic waste gas output by the first gas-solid mixer at the upper layer to enter the first gas-solid mixer at the same layer;

the first guide pipe is used for guiding powder adsorption particles output by the first gas-solid mixer on the same layer to uniformly fall on the first filter screen plate on the same layer.

Optionally, the multistage mixed filtration type organic waste gas adsorption purification system further comprises a saturated filler collecting and separating and supplementing device, the input end of the saturated filler collecting and separating and supplementing device is connected with the first discharge port of the top layer, the first output end of the saturated filler collecting and separating and supplementing device is connected with the organic waste gas input end of the top layer, and the second output end of the saturated filler collecting and separating and supplementing device is connected with the second desorption filler input end, wherein:

The saturated filler collecting, separating and supplementing device is used for separating saturated powder adsorption particles discharged by the top adsorption filtration layer from air flow, sending the separated saturated powder adsorption particles into the desorption tower, and sending the separated gas into the top adsorption filtration layer.

Optionally, the first bin outlet of same layer is connected to the first end of first row material pipe, the second end of first row material pipe is connected the first desorption of next layer and is filled the input or the second desorption is filled the input, the first row material pipe of same layer is connected to the output of first jet fan, the first gas vent of seting up below the first filter screen plate of same layer is connected to the input of first jet fan, wherein:

the first jet fan is used for discharging powder adsorption particles on a first filter screen plate of the same layer out of the adsorption tower through gas exhausted by a corresponding adsorption filter layer, and feeding the powder adsorption particles into a first desorption filler input end or a second desorption filler input end of a next layer through a corresponding first discharge pipe.

Optionally, the first end of material pipe is arranged to the second is connected the second bin outlet, the first desorption filler input of bottom is connected to the second end of material pipe is arranged to the second, the output of second efflux fan is connected the material pipe is arranged to the second, the first gas vent of bottom is connected to the input of second efflux fan, wherein:

The second jet fan is used for discharging the powder adsorption particles on the second filter screen plate out of the desorption tower through clean gas discharged by the bottom adsorption filter layer, and feeding the powder adsorption particles into the first desorption filler input end of the bottom layer through the second discharge pipe.

Optionally, the desorption regenerating unit further includes an adsorption packing circulation pipeline and a third jet fan, a first end of the adsorption packing circulation pipeline is connected with the second discharge port, a second end of the adsorption packing circulation pipeline is connected with the second desorption packing input end, an output end of the third jet fan is connected with the adsorption packing circulation pipeline, and an input end of the third jet fan is connected with the second exhaust port, wherein:

the third jet fan is used for exhausting the powder adsorption particles on the second filter screen plate out of the desorption tower through the gas exhausted from the second exhaust port, and sending the powder adsorption particles into the second desorption filler input end through the adsorption filler circulating pipeline, so that the cyclic heating of the filler is realized, and the regeneration effect is improved.

Optionally, the multistage hybrid filtration type organic waste gas adsorption purification system further comprises a nitrogen purging pipe and a nitrogen regulating valve, wherein the nitrogen purging pipe and the nitrogen regulating valve are connected with an organic steam circulation pipeline, and the desorption regeneration device further comprises a nitrogen purging pipe and a nitrogen regulating valve, wherein:

The nitrogen purging pipe is used for purging the system by nitrogen when the desorption regeneration device system is started, replacing air in the system space and controlling the oxygen content of the system to be in a set standard;

the nitrogen regulating valve is used for timely supplementing nitrogen consumed by the system in the running process of the system, regulating the oxygen content in the system and ensuring the running safety of the system.

Optionally, the desorption regeneration device further comprises a saturated filler collecting, separating and supplementing device and an organic steam collecting pipeline, wherein a first valve is arranged on the organic steam circulating pipeline, and a second valve is arranged on the organic steam collecting pipeline; the first end of the organic steam circulation pipeline is connected with the output end of the circulation heating fan, the second end of the organic steam circulation pipeline is connected with the input end of the organic steam circulation heater, and the output end of the organic steam circulation heater is connected with the saturated filler conveying pipe on the desorption regeneration device; the first end of the organic steam collecting pipeline is connected with the output end of the circulating heating fan, and the second end of the organic steam collecting pipeline is connected with the post-treatment device; the saturated filler collecting, separating and supplementing device is connected with a saturated filler conveying pipe on the desorption regeneration device.

Optionally, the multistage hybrid filtration type organic exhaust gas adsorption purification system further comprises an aftertreatment device, and the aftertreatment device comprises: condensation recovery unit, catalytic combustion unit (RCO) or regenerative combustion unit (RTO) wherein:

the condensation recovery device is used for condensing the gas discharged by the organic steam collecting pipeline into liquid through a multi-stage condenser and collecting the liquid;

the catalytic combustion device (RCO) or the regenerative combustion device (RTO) is used for oxidizing and burning the organic waste gas, so as to eliminate the direct pollution of the organic waste gas to the atmosphere.

Optionally, the multistage mixed filtration type organic waste gas adsorption purification system further comprises a control device and a gas detection device, wherein the gas detection device is installed below each layer of the first filter screen plate, and the control device is connected with the gas detection device and the first jet fan, wherein:

the gas detection device is used for detecting gas data corresponding to the space below the first filter screen plate and sending the gas data to the control device;

the control device is used for controlling the first jet fan at the lower layer to continuously run under the condition that the gas data is larger than a preset data threshold value so as to increase the adding proportion of the adsorption filler; and under the condition that the gas data is smaller than or equal to a preset data threshold value, controlling the first jet fan at the lower layer to intermittently operate so as to reduce the adding proportion of the adsorption filler.

Optionally, the multistage mixed filtration type organic waste gas adsorption purification system further comprises a control device, a concentration monitoring instrument and a temperature monitoring instrument, wherein the concentration monitoring instrument and the temperature monitoring instrument are installed in the desorption tower, and the concentration monitoring instrument, the temperature monitoring instrument and the organic steam circulation heater are connected with the control device, and the multistage mixed filtration type organic waste gas adsorption purification system comprises the following components:

the concentration monitoring instrument is used for detecting the concentration of the organic component of the gas in the desorption tower and sending the concentration of the organic component to the control device;

the temperature monitoring instrument is used for detecting the temperature of the gas in the desorption tower and sending the temperature to the control device;

the control device is used for reducing the temperature of the organic steam circulation heater to reduce the operation load under the condition that the concentration of the organic component is greater than or equal to a preset concentration and the temperature is greater than or equal to a preset temperature; and under the condition that the concentration of the organic components is smaller than a preset concentration and the temperature is smaller than a preset temperature, increasing the temperature of the organic steam circulation heater to improve the operation load and ensure the stable operation of the desorption regeneration device.

According to the invention, the organic waste gas and the powder adsorption particles are sent into the gas-solid mixer to drive the unpowered pneumatic impeller to rotate, and the organic waste gas and the powder adsorption particles form mixed air flow under the rotation action of the unpowered pneumatic impeller and then enter the adsorption filter layer, so that the organic waste gas and the powder adsorption particles are fully contacted in the adsorption filter layer, the contact area is greatly increased, the powder adsorption particles fully adsorb organic components in the organic waste gas, and the adsorption efficiency of the organic components is improved. Powder adsorption particles in the adsorption filter layer gradually subside to the filter screen plate under the action of self gravity and form a filter layer with a certain thickness. The organic waste gas in the adsorption filter layer passes through the adsorption filter layer to contact with the powder adsorption particles again under the action of the exhaust fan, and organic components in the organic waste gas are adsorbed by the powder adsorption particles again, so that the purification effect of the organic waste gas is improved, and the emission standard is guaranteed to be reached. Organic waste gas is sent into the gas-solid mixer of the top adsorption filtration layer, under the action of the first exhaust fan, the organic waste gas enters the corresponding adsorption filtration layer from top to bottom through the gas-solid mixer of each adsorption filtration layer, and finally is discharged out of the adsorption tower from the exhaust port. The pure powder adsorption particles are sent into a gas-solid mixer of a bottom adsorption filtration layer, the powder adsorption particles adsorb organic waste gas in the bottom adsorption filtration layer and fall onto a bottom filter screen plate, the powder adsorption particles are sent into the gas-solid mixer of the last adsorption filtration layer through a bottom discharge port, enter the corresponding adsorption filtration layers from bottom to top through the gas-solid mixers of the adsorption filtration layers, and finally are discharged out of the adsorption tower from a top discharge port. The higher the purity of the powder adsorption particles of each adsorption filtration layer from top to bottom, the stronger the adsorption capacity. The lower the concentration of the organic components in the organic waste gas from the top to the bottom of each adsorption filtration layer is, the easier the organic components are adsorbed and purified by the powder adsorption particles. After the organic waste gas with the lowest concentration of organic components enters the bottom adsorption filtration layer, the organic waste gas is adsorbed and purified by the powder adsorption particles with the strongest adsorption capacity, and the concentration of the organic components of the organic waste gas is far lower than the emission standard, so that the purification effect of the organic waste gas is improved. Saturated powder adsorption particles discharged from the top adsorption filtration layer are sent to a gas-solid mixer of the desorption regeneration device, and high-temperature organic steam is sent to the gas-solid mixer of the desorption regeneration device, so that the saturated powder adsorption particles are fully contacted with the high-temperature organic steam, organic components in the powder adsorption particles are rapidly evaporated, and the desorption efficiency of the organic components is improved. The desorption regeneration device carries out high-temperature desorption on the saturated powder adsorption particles so as to recover pure powder adsorption particles, and sends the pure powder adsorption particles into a gas-solid mixer of a bottom adsorption filtration layer, so that the recovery and utilization of the powder adsorption particles are realized, secondary pollution of the powder adsorption particles to the environment is avoided, and the use cost of the powder adsorption particles is saved. The adsorption purification device and the desorption regeneration device can continuously work, and the whole organic waste gas adsorption purification system has the advantages of low operation and maintenance cost and low regeneration energy consumption, and is convenient for industrialized popularization and use.

Drawings

FIG. 1 is a schematic diagram of a multi-stage hybrid exhaust gas purification system according to the present invention;

FIG. 2 is a schematic diagram of the adsorption purification device according to the present invention;

fig. 3 is a schematic structural diagram of a desorption regeneration device provided by the invention;

in the figure, 10, an adsorption purification device; 101. an adsorption tower; 102. a first gas-solid mixer; 1021. an organic waste gas input; 1022. a first unpowered wind driven impeller; 1023. a first desorbing filler input; 1024. a first mixed output; 103. a first screen panel; 104. a first exhaust fan; 105. a first exhaust port; 106. a first discharge port; 107. a first discharge pipe; 108. a first jet fan; 109. a first draft tube; 110. a second flow guide pipe; 111. a sealing plate; 121. a top layer adsorption filtration layer; 122. a second adsorption filtration layer; 123. a third adsorption filtration layer; 124. a bottom adsorption filtration layer; 20. a desorption regeneration device; 201. a desorption tower; 202. a second gas-solid mixer; 2021. a saturated filler conveying pipe on the desorption regeneration device; 2022. the second unpowered pneumatic impeller; 2023. a second desorbing filler input; 2024. a second mixed output; 203. a second screen panel; 2030. a nitrogen purge tube; 2031. a nitrogen regulating valve; 204. a circulating heating fan; 205. a second exhaust port; 206. a second discharge port; 207. a second discharge pipe; 208. a second jet fan; 209. an organic vapor cycle heater; 210. an organic vapor circulation line; 211. a first valve; 212. a second valve; 213. an organic vapor collection conduit; 214. a third jet fan; 215. an adsorption packing circulation pipe; 30. the saturated filler collecting, separating and supplementing device; 40. a post-treatment device; 50. and an adsorption filler supplementing device.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

As shown in fig. 1 to 3, the present invention provides a multi-stage mixed filtration type organic waste gas adsorption and purification system, which aims to adsorb organic components of VOCs in waste gas stage by stage through a multi-stage adsorption unit in an adsorption and purification device 10, and desorb saturated powder adsorption particles at high temperature through a desorption recovery device to recover pure powder adsorption particles, so as to solve the problems that the adsorption capacity of the existing organic waste gas adsorption and purification system is low and an adsorption material cannot be recycled.

In this embodiment, the multistage hybrid filter type organic exhaust gas adsorption purification system includes an adsorption purification device 10 and a desorption regeneration device 20. Referring to fig. 1, the adsorption purification apparatus 10 includes an adsorption tower 101, a first suction fan 104, and a plurality of stages of adsorption filtration layers layered in the adsorption tower 101, each stage of adsorption filtration layer including a first gas-solid mixer 102, a first filter screen 103, a first jet fan 108, and a first discharge pipe 107, the first gas-solid mixer 102 including a first desorption filler input 1023, an organic waste gas input 1021, a first mixing output 1024, and a first passive wind-driven impeller 1022, the first gas-solid mixer 102 being disposed above the corresponding first filter screen 103 with the first mixing output 1024 facing the corresponding first filter screen 103; the input end of the first exhaust fan 104 is connected with a first exhaust port 105 formed in the wall of the adsorption tower 101 below the first filter screen plate 103 at the bottom layer, and a first discharge port 106 formed in the wall of the adsorption tower 101 above the first filter screen plate 103 is connected with a first desorption filler input end 1023 of the upper layer through a first discharge pipe 107 and a first jet fan 108; wherein, the organic waste gas is adsorbed and filtered after being fully mixed with the adsorption filler by the first gas-solid mixer 102, and the organic waste gas is adsorbed and filtered again by passing through the adsorption filler deposited on the first filter screen plate 103 and sequentially passes through each adsorption filter layer.

Illustratively, referring to FIG. 1, under the action of the first exhaust fan 104, the organic exhaust gas enters the first gas-solid mixer 102 from the organic exhaust gas input 1021 above the first unpowered wind powered impeller 1022, and the organic exhaust gas rotates the first unpowered wind powered impeller 1022 as it passes through the first unpowered wind powered impeller 1022. The powder adsorption particles enter the first gas-solid mixer 102 from the first desorbing filler input 1023 at the side of the first unpowered wind driven impeller 1022. Under the rotation action of the first unpowered wind driven impeller 1022, the powder adsorption particles and the organic waste gas are uniformly mixed to form a mixed air flow, and the mixed air flow enters the corresponding adsorption filtering layer through a first mixing output end 1024 below the first unpowered wind driven impeller 1022. In the mixed airflow, the powder adsorption particles are fully contacted with the organic waste gas, so that the contact surface of the powder adsorption particles and the organic waste gas is increased, organic components in the organic waste gas are adsorbed by micropores in the powder adsorption particles, and the organic components enter from a gas phase and are converted into a solid phase to complete mass transfer reaction, so that the organic components are removed from the organic waste gas and purified, the full adsorption and purification of the organic components in the organic waste gas are realized, and the adsorption efficiency of the organic components is improved. Further, after the powder adsorption particles in the mixed air flow adsorb the organic waste gas, the powder adsorption particles gradually sink onto the first filter screen plate 103 under the action of self gravity to form a filter layer with a certain thickness. Under the action of the first suction fan 104, the organic waste gas in the mixed gas flow passes through the adsorption filtration layer and the first filter screen plate 103 and enters the first gas-solid mixer 102 of the next adsorption filtration layer. When the organic waste gas passes through the filter layer, the organic waste gas is contacted with the powder adsorption particles in the filter layer again, and the organic components in the organic waste gas are adsorbed again, so that the adsorption efficiency of the organic waste gas is improved. The powder adsorption particles attached to the organic waste gas are intercepted by the first filter screen plate 103, so that the purity of the gas discharged out of the adsorption tower 101 is ensured, and the waste of the powder adsorption particles is avoided. The powder adsorption particles accumulated on the first filter screen plate 103 are discharged out of the adsorption filter layer through a first discharge port 106 of the adsorption filter layer and are sent into a first gas-solid mixer 102 of the upper adsorption filter layer or are sent to the desorption regeneration device 20 through a first discharge pipeline 107 and a first jet fan 108.

In one embodiment, referring to fig. 1, a sealing plate 111 is disposed between two adjacent adsorption filtration layers, a first gas-solid mixer 102 of a lower adsorption filtration layer of the two adjacent adsorption filtration layers is mounted on the sealing plate 111, an organic waste gas input 1021 of the first gas-solid mixer 102 is located in an upper adsorption filtration layer, and a first mixing output 1024 is located in a lower adsorption filtration layer, so that organic waste gas enters the adsorption filtration layer from the first gas-solid mixer 102 of the adsorption filtration layer. Illustratively, when first suction fan 104 is operated, the gas stream within adsorption column 101 flows from top to bottom and exits adsorption column 101. Under the action of the first exhaust fan 104, the organic waste gas discharged from the waste gas device enters the top-layer adsorption filtration layer 121 from the first gas-solid mixer 102 of the top-layer adsorption filtration layer 121, then sequentially passes through the first gas-solid mixers 102 of the adsorption filtration layers from top to bottom, enters the corresponding adsorption filtration layers, and finally is discharged from the first exhaust port 105 of the bottom-layer adsorption filtration layer 124 to the adsorption tower 101. The pure powder adsorption particles conveyed by the desorption regeneration device 20 enter the bottom adsorption filtration layer 124 from the first gas-solid mixer 102 of the bottom adsorption filtration layer 124 and settle on the first filter screen 103 of the bottom adsorption filtration layer 124. After the powder adsorption particles on the first filter screen plate 103 of the lower adsorption filtration layer of the two adjacent adsorption filtration layers are discharged from the first discharge port 106 of the same layer, the powder adsorption particles enter the first gas-solid mixer 102 of the upper adsorption filtration layer through the first discharge pipe 107 so as to enter the upper adsorption filtration layer, and the powder adsorption particles sequentially enter each adsorption filtration layer from bottom to top. The powder adsorption particles on the first filter screen plate 103 of the top-layer adsorption filtration layer 121 are transported from the first discharge port 106 of the top-layer adsorption filtration layer 121 to the desorption regeneration device 20. The embodiment adopts a single tower to arrange the multistage adsorption filtration layer up and down, and has the advantages of integrated structural design, compact purification device, strong integrity and convenient operation and maintenance.

Referring to fig. 1 and 2, the present embodiment is described taking an example in which the adsorption purification apparatus 10 includes four adsorption filtration layers, namely, a top adsorption filtration layer 121, a second adsorption filtration layer 122, a third adsorption filtration layer 123, and a bottom adsorption filtration layer 124 from top to bottom. The first gas-solid mixer 102 of the top-layer adsorption filtration layer 121 is installed at the top of the adsorption tower 101, the first filter screen 103 of the top-layer adsorption filtration layer 121 is located below the top-layer first gas-solid mixer 102, the sealing plate 111 of the top-layer adsorption filtration layer 121 is located below the first filter screen 103 of the top-layer adsorption filtration layer 121, and the space between the sealing plate 111 of the top-layer adsorption filtration layer 121 and the top of the adsorption tower 101 is the top-layer adsorption filtration layer 121. The first gas-solid mixer 102 of the second adsorption filtration layer 122 is mounted on the sealing plate 111 of the top adsorption filtration layer 121, the first filter screen 103 of the second adsorption filtration layer 122 is located below the first gas-solid mixer 102 of the second adsorption filtration layer 122, the sealing plate 111 of the second adsorption filtration layer 122 is located below the second adsorption filtration layer 122, and the space between the sealing plate 111 of the second adsorption filtration layer 122 and the sealing plate 111 of the first adsorption filtration layer is the second adsorption filtration layer 122. The third adsorption filtration layer 123 and the bottom adsorption filtration layer 124 are similar to each other in the adsorption tower 101, and will not be described again here. Further, a first discharge port 106 of the second adsorption filtration layer 122 is disposed above the first filter screen 103 of the second adsorption filtration layer 122, and the first discharge port 106 of the second adsorption filtration layer 122 is connected to the adsorption filler input end of the first gas-solid mixer 102 of the top adsorption filtration layer 121 through the first discharge pipe 107 and the first jet fan 108 of the second adsorption filtration layer 122. A first discharge port 106 of the third adsorption filtration layer 123 is arranged above the first filter screen 103 of the third adsorption filtration layer 123, and the first discharge port 106 of the third adsorption filtration layer 123 is connected with the adsorption filler input end of the first gas-solid mixer 102 of the second adsorption filtration layer 122 through the first discharge pipe 107 and the first jet fan 108 of the third adsorption filtration layer 123. A first discharge port 106 of the bottom adsorption filtration layer 124 is arranged above the first filter screen 103 of the bottom adsorption filtration layer 124, and the first discharge port 106 of the bottom adsorption filtration layer 124 is connected with the adsorption filler input end of the first gas-solid mixer 102 of the second adsorption filtration layer 122 through a first discharge pipe 107 and a first jet fan 108 of the bottom adsorption filtration layer 124. In order to facilitate the discharge of the powder-adsorbed particles on the first screen plate 103, the lower edge of the first discharge port 106 is flush with the first screen plate 103.

Illustratively, the organic waste gas enters the first gas-solid mixer 102 of the top-layer adsorption filtration layer 121, forms a mixed gas stream with the powder-adsorbent particles of the first gas-solid mixer 102 that the second adsorption filtration layer 122 delivers to the top-layer adsorption filtration layer 121, and then enters the top-layer adsorption filtration layer 121. After the powder adsorption particles in the top adsorption filtration layer 121 adsorb and purify the organic waste gas, the organic waste gas is settled on the first filter screen plate 103 of the top adsorption filtration layer 121 and is transported to the desorption regeneration device 20 through the first discharge port 106 and the first discharge pipe 107 of the top adsorption filtration layer 121. The organic waste gas in the top adsorption filtration layer 121 is adsorbed and purified, then enters the first gas-solid mixer 102 of the second adsorption filtration layer 122, and forms a mixed gas flow with the powder adsorption particles of the first gas-solid mixer 102 conveyed to the second adsorption filtration layer 122 by the third adsorption filtration layer 123, and then enters the second adsorption filtration layer 122. After the powder adsorption particles in the second adsorption filtration layer 122 adsorb and purify the organic waste gas, the organic waste gas is settled on the first filter screen 103 of the second adsorption filtration layer 122 and is conveyed to the first gas-solid mixer 102 of the top adsorption filtration layer 121 through the first discharge port 106 and the first discharge pipe 107 of the second adsorption filtration layer 122. The organic waste gas in the second adsorption filtration layer 122 is adsorbed and purified, then enters the first gas-solid mixer 102 of the third adsorption filtration layer 123, and forms a mixed gas flow with the powder adsorption particles of the first gas-solid mixer 102 conveyed to the third adsorption filtration layer 123 by the bottom adsorption filtration layer 124, and then enters the third adsorption filtration layer 123. After the powder adsorption particles in the third adsorption filtration layer 123 adsorb and purify the organic waste gas, the organic waste gas is settled on the first filter screen plate 103 of the third adsorption filtration layer 123 and is conveyed to the first gas-solid mixer 102 of the second adsorption filtration layer 122 through the first discharge port 106 and the first discharge pipe 107 of the third adsorption filtration layer 123. The organic waste gas in the third adsorption filtration layer 123 is adsorbed and purified, then enters the first gas-solid mixer 102 of the bottom adsorption filtration layer 124, forms a mixed gas flow with the pure powder adsorption particles of the first gas-solid mixer 102 which are delivered to the bottom adsorption filtration layer 124 by the desorption regeneration device 20, and then enters the bottom adsorption filtration layer 124. After the powder adsorption particles in the bottom adsorption filtration layer 124 adsorb and purify the organic waste gas, the organic waste gas is settled on the first filter screen 103 of the bottom adsorption filtration layer 124 and is transported to the first gas-solid mixer 102 of the third adsorption filtration layer 123 through the first discharge port 106 and the first discharge pipe 107 of the bottom adsorption filtration layer 124. The organic waste gas in the bottom adsorption filtration layer 124 is purified by adsorption to become clean gas, and then is discharged out of the adsorption tower 101 through the first exhaust port 105 of the bottom adsorption filtration layer 124.

In this embodiment, the organic waste gas is adsorbed and purified by the powder adsorption particles in the corresponding adsorption filtration layer every time it passes through one adsorption filtration layer from top to bottom, so that the lower the concentration of the organic component of the organic waste gas in each adsorption filtration layer from top to bottom, the easier the organic component is adsorbed and purified by the powder adsorption particles. Each time the powder adsorption particles pass through one adsorption filtration layer from bottom to top, the organic waste gas in the corresponding adsorption filtration layer is adsorbed and purified, so that the higher the purity of the powder adsorption particles of each adsorption filtration layer from top to bottom, the stronger the adsorption capacity. The pure powder adsorption particles with the largest adsorption capacity are put in the bottom adsorption filtration layer 124 closest to the first exhaust fan 104, so that the organic waste gas discharged from the adsorption tower 101 by the first exhaust fan 104 is strictly controlled by the pure powder adsorption particles. Therefore, the concentration of the organic components in the exhaust gas from the adsorption tower 101 is far lower than the emission standard, and the emission standard is strictly observed, so that the influence of the organic components on the surrounding environment is eliminated.

In this embodiment, the desorption regeneration device 20 includes a desorption tower 201, a circulation heating fan 204, a second discharge pipe, a second jet fan, an organic vapor circulation heater, an organic vapor circulation pipeline, and a second gas-solid mixer 202 and a second filter screen 203 disposed in the desorption tower 201, the second gas-solid mixer 202 includes a second desorption filler input end 2023, a saturated filler delivery pipe 2021 on the desorption regeneration device, a second mixing output end 2024, and a second unpowered pneumatic impeller 2022, the second gas-solid mixer 202 is disposed above the second filter screen 203, and the second mixing output end 2024 faces the second filter screen 203; the input end of the circulating heating fan 204 is connected with a second exhaust port 205 arranged on the wall of the desorption tower 201 below the second filter screen plate 203; the saturated filler conveying pipe 2021 on the desorption regeneration device is connected with the output end of the circulating heating fan 204 through the organic steam circulating heater 209 and the organic steam circulating pipeline 210; the top layer first discharge port 106 is connected with a second desorption filler input end 2023, and a second discharge port 206 formed on the wall of the desorption tower 201 above the second filter screen 203 is connected with the bottom layer first desorption filler input end 1023 through a second discharge pipe 207 and a second jet fan 208.

Illustratively, referring to fig. 1, under the action of the circulation heater 204, the high-temperature organic vapor enters the second gas-solid mixer 202 from the saturated filler delivery pipe 2021 on the desorption regeneration device at the side of the second unpowered pneumatic impeller 2022, and when the high-temperature organic vapor passes through the second unpowered pneumatic impeller 2022, the second unpowered pneumatic impeller 2022 is driven to rotate. Saturated powder adsorption particles discharged from the top adsorption filtration layer 121 enter the second gas-solid mixer 202 from the second desorption filler input end 2023 above the second unpowered pneumatic impeller 2022. Under the rotation of the second unpowered pneumatic impeller 2022, the powder adsorption particles and the high-temperature organic steam are uniformly mixed to form a mixed air flow, and the mixed air flow enters the desorption tower 201 through a second mixing output end 2024 below the second unpowered pneumatic impeller 2022. In the mixed air flow, the powder adsorption particles are fully contacted with the high-temperature organic steam, so that the contact area of the powder adsorption particles and the high-temperature organic steam is increased, organic components in the powder adsorption particles are quickly heated and evaporated, and are desorbed from the powder adsorption particles, so that the powder adsorption particles are quickly desorbed into pure powder adsorption particles, and the desorption efficiency of the powder adsorption particles is improved. Further, after the powder adsorption particles in the mixed gas flow are desorbed, they gradually settle down onto the second filter screen plate 203 under the action of self gravity. Under the action of the circulation heating fan 204, the high-temperature organic vapor in the mixed gas flow passes through the second filter screen plate 203 and the powder adsorption particles, and is discharged out of the desorption tower 201 through the second exhaust port 205. The powder adsorption particles attached by the high-temperature organic vapor are intercepted by the second filter screen plate 203, so that the waste of the powder adsorption particles is avoided. Pure powder adsorption particles on the second filter screen plate 203 are discharged out of the desorption tower 201 through the second discharge port 206 and are sent into the first gas-solid mixer 102 of the bottom adsorption filtration layer 124 through the second discharge pipe 207 and the second jet fan 208 to be subjected to a new round of adsorption purification, so that the recycling of the powder adsorption particles is realized. Also, in order to facilitate the discharge of the powder-adsorbed particles on the second screen plate 203, the lower edge of the second discharge port 206 is flush with the second screen plate 203. The high-temperature organic vapor discharged from the circulation heating fan 204 enters the organic vapor circulation heater 209 through the organic vapor circulation pipe 210, and is heated in the organic vapor circulation heater 209 and then is sent to the second gas-solid mixer 202. The organic vapor circulation heater 209 heats the temperature of the organic vapor in the desorption tower 201 for a plurality of times, so that the desorption efficiency in the desorption tower 201 can be improved, the organic vapor is repeatedly extracted and sent into the desorption tower 201, the mixed flow turbulence in the desorption tower 201 is enhanced, the mass transfer effect is improved, and the regeneration time of the powder adsorption particles is shortened.

In an embodiment, referring to fig. 2, each layer of the adsorption filtration layer further includes a first flow guide 109, the lower layer of the two adjacent adsorption filtration layers further includes a second flow guide 110, the input end of the first flow guide 109 is connected to the first mixed output 1024 of the same layer, the output end of the first flow guide 109 faces the first filter screen 103 of the same layer, the output end of the first flow guide 109 is larger than the input end of the first flow guide 109, the output end of the second flow guide 110 is connected to the organic waste gas input 1021 of the same layer, the input end of the second flow guide 110 faces the first filter screen 103 of the upper layer, and the input end of the second flow guide 110 is larger than the output end of the second flow guide 110. The second flow guiding pipe 110 is used for guiding the organic waste gas output by the first gas-solid mixer 102 at the upper layer to enter the first gas-solid mixer 102 at the same layer; the first flow guide pipe 109 is used for guiding the powder adsorption particles output by the first gas-solid mixer 102 of the same layer to uniformly fall on the first filter screen plate 103 of the same layer. Illustratively, the first flow conduit 109 of the top-layer adsorption filtration layer 121 is connected to the first mixing output 1024 of the first gas-solid mixer 102 of the top-layer adsorption filtration layer 121, and the first flow conduit 109 of the top-layer adsorption filtration layer 121 faces the first screen 103 of the top-layer adsorption filtration layer 121. The powder adsorption particles in the mixed air flow output by the first gas-solid mixer 102 of the top adsorption filtration layer 121 fall on the first filter screen plate 103 of the top adsorption filtration layer 121 uniformly under the action of the first guide pipe 109 of the top adsorption filtration layer 121, so that the powder adsorption particles accumulated on the first filter screen plate 103 of the top adsorption filtration layer 121 keep uniform thickness. The organic waste gas can pass through the first filter screen plate 103 through the path that resistance is minimum, if powder adsorption particles evenly distributed is on the first filter screen plate 103, then the organic waste gas can pass through the powder adsorption particles of certain thickness for the organic waste gas contacts with a certain amount of powder adsorption particles again, improves the secondary purification efficiency to the organic waste gas. Further, the second adsorption filtration layer 122, the third adsorption filtration layer 123, and the bottom adsorption filtration layer 124 each include the second flow guide 110. For example, the second flow guide 110 of the second adsorption filtration layer 122 is connected to the organic exhaust gas input 1021 of the first gas-solid mixer 102 of the second adsorption filtration layer 122, and the second flow guide 110 of the second adsorption filtration layer 122 faces the first filter screen 103 of the top adsorption filtration layer 121. Under the action of the first exhaust fan 104 and the second flow guide pipe 110, the organic waste gas in the top adsorption filtration layer 121 quickly enters the first gas-solid mixer 102 of the second adsorption filtration layer 122, so that the fluidity of the organic waste gas in the adsorption tower 101 is improved, and the gas-solid mass transfer efficiency is improved.

In an embodiment, referring to fig. 1, the multi-stage hybrid filtration type organic waste gas adsorption and purification system further includes a saturated packing collecting and separating and supplementing device 30, an input end of the saturated packing collecting and separating and supplementing device 30 is connected to the top layer first discharge port 106, a first output end of the saturated packing collecting and separating and supplementing device 30 is connected to the top layer organic waste gas input end 1021, and a second output end of the saturated packing collecting and separating and supplementing device 30 is connected to the second desorption packing input end 2023. The saturated packing collecting, separating and supplementing device 30 is used for separating the powder adsorption particles discharged from the top adsorption and filtration layer 121 from the air flow, sending the separated saturated powder adsorption particles into the desorption tower 201, and sending the separated saturated powder adsorption particles into the top adsorption and filtration layer 121. In this embodiment, the organic waste gas is separated from the saturated powder adsorption particles, so that the influence of the organic waste gas on the desorption and regeneration of the powder adsorption particles in the desorption tower is avoided, and the separated organic waste gas is sent into the adsorption tower again for adsorption and purification, so that the purification effect of the organic waste gas is improved.

In an embodiment, referring to fig. 2, a first end of the first discharge pipe 107 is connected to the first discharge port 106 of the same layer, a second end of the first discharge pipe 107 is connected to the first desorption filler input end 1023 or the second desorption filler input end 2023 of the next layer, an output end of the first jet fan 108 is connected to the first discharge pipe 107 of the same layer, and an input end of the first jet fan 108 is connected to the first exhaust port 105 provided below the first filter screen plate 103 of the same layer. The first jet fan 108 is configured to discharge the powder adsorption particles on the first filter screen 103 of the same layer out of the adsorption tower 101 through the gas exhausted from the corresponding adsorption filter layer, and send the powder adsorption particles to the first desorption filler input end 1023 or the second desorption filler input end 2023 of the next layer through the corresponding first discharge pipe 107. Illustratively, the first jet blower 108 of the top-layer adsorption filtration layer 121 feeds the powder-adsorbed particles on the first screen plate 103 of the top-layer adsorption filtration layer 121 into the second gas-solid mixer 202 of the desorption regeneration device 20 by means of the gas discharged from the first vent 105 of the top-layer adsorption filtration layer 121. The first jet fan 108 of the second adsorption filtration layer 122 sends the powder adsorption particles on the first filter plate 103 of the second adsorption filtration layer 122 into the first gas-solid mixer 102 of the top adsorption filtration layer 121 by means of the gas exhausted from the first exhaust port 105 of the second adsorption filtration layer 122. The first jet fan 108 of the third adsorption filtration layer 123 feeds the powder adsorption particles on the first filter screen 103 of the third adsorption filtration layer 123 into the first gas-solid mixer 102 of the second adsorption filtration layer 122 by means of the gas discharged from the first vent 105 of the third adsorption filtration layer 123. The first jet fan 108 of the bottom adsorption filtration layer 124 sends the powder adsorption particles on the first filter screen 103 of the bottom adsorption filtration layer 124 into the first gas-solid mixer 102 of the third adsorption filtration layer 123 by means of the gas exhausted from the first exhaust port 105 of the bottom adsorption filtration layer 124. In this embodiment, the powder adsorption particles and the gas output by the first jet fan 108 form an air flow and enter the first gas-solid mixer 102, the air flow acts on the first unpowered pneumatic impeller 1022, so that the first unpowered pneumatic impeller 1022 rotates violently, the powder adsorption particles and the organic waste gas are quickly mixed to form a mixed air flow, and then the mixed air flow enters the adsorption filtration layer, so that the fluidity of the air flow in the adsorption tower 101 is improved, the gas-solid mass transfer efficiency is improved, and the overall adsorption efficiency is stabilized at a high level. Similarly, the powder adsorption particles and the gas output by the first jet fan 108 form gas flow and enter the second gas-solid mixer 202, the gas flow acts on the second unpowered pneumatic impeller 2022, so that the second unpowered pneumatic impeller 2022 rotates violently, the powder adsorption particles and the high-temperature organic vapor are quickly mixed to form mixed gas flow and then enter the desorption tower 201, the fluidity of the gas flow in the desorption tower 201 is improved, the gas-solid mass transfer efficiency is improved, and the overall desorption efficiency is stabilized at a high level.

In this embodiment, the multistage hybrid filter type organic exhaust gas adsorption purification system further includes a control device and a gas detection device, the gas detection device is installed below each layer of the first filter screen plate 103, and the control device is connected to the gas detection device and the first jet fan 108. Wherein, the gas detection device is used for detecting the gas data corresponding to the space below the first filter screen plate 103 and sending the gas data to the control device; the control device is used for controlling the operation of the lower-layer first jet fan 108 and increasing the adding proportion of the adsorption filler under the condition that the gas data is larger than a preset data threshold value; and under the condition that the gas data is smaller than or equal to a preset data threshold value, controlling the intermittent operation frequency of the lower first jet fan 108 so as to reduce the adding proportion of the adsorption filling. For example, when the gas data of the second adsorption filtration layer 122 is greater than the preset data threshold, it indicates that the adsorption capacity of the powder adsorption particles in the second adsorption filtration layer 122 is currently poor, and the first jet fan 108 of the third adsorption filtration layer 123 may be controlled to operate so as to send the powder adsorption particles on the first filter screen 103 of the third adsorption filtration layer 123 into the second adsorption filtration layer 122, thereby enhancing the adsorption capacity of the second adsorption filtration layer 122. When the gas data of the second adsorption filtration layer 122 is smaller than or equal to the preset data threshold, it indicates that the adsorption capacity of the powder adsorption particles in the second adsorption filtration layer 122 is stronger currently, and the first jet fan 108 of the third adsorption filtration layer 123 can be controlled to intermittently operate, so as to maintain the adsorption capacity of the second adsorption filtration layer 122 and reduce the operation power consumption of the first jet fan 108.

In one embodiment, a first end of second discharge conduit 207 is connected to second discharge port 206, a second end of second discharge conduit 207 is connected to first bottom layer desorbing filler input 1023, an output of second jet blower 208 is connected to second discharge conduit 207, and an input of second jet blower 208 is connected to first bottom layer exhaust port 105. The second jet fan 208 is used for discharging the powder adsorption particles on the second filter screen 203 out of the desorption tower 201 through the clean gas discharged from the bottom adsorption filtration layer 124, and feeding the powder adsorption particles into the first desorption packing input end 1023 of the bottom layer through the second discharge pipe 207. Illustratively, the second jet blower 208 discharges the pure powder adsorption particles on the second filter screen 203 out of the desorption tower 201 by means of the clean gas discharged from the first exhaust port 105 of the bottom adsorption filtration layer 124, and the pure powder adsorption particles are sent into the first desorption filler input 1023 of the first gas-solid mixer 102 of the bottom adsorption filtration layer 124 through the second discharge pipe 207, so as to realize recycling of the powder adsorption particles. In this embodiment, the pure powder adsorbed particles and the clean gas output by the second jet blower 208 form a gas flow and enter the first gas-solid mixer 102, and the gas flow acts on the first unpowered wind driven impeller 1022, so that the first unpowered wind driven impeller 1022 rotates vigorously. The powder adsorption particles and the organic waste gas are quickly mixed to form a mixed gas flow, and then the mixed gas flow enters the bottom adsorption filtration layer 124, so that the fluidity of the gas flow in the adsorption tower 101 is improved, and the gas-solid mass transfer efficiency is improved.

In this embodiment, referring to fig. 3, the desorption regeneration device 20 further includes an adsorption packing circulation pipe 215 and a third jet fan 214, wherein a first end of the adsorption packing circulation pipe 215 is connected to the second discharge port 206, a second end of the adsorption packing circulation pipe 215 is connected to the second desorption packing input end 2023, an output end of the third jet fan 214 is connected to the adsorption packing circulation pipe 215, and an input end of the third jet fan 214 is connected to the second exhaust port 205; the third jet fan 214 is used for discharging the powder adsorption particles on the second filter screen plate 203 out of the desorption tower 201 through the gas discharged from the second exhaust port 205, and sending the powder adsorption particles into the second desorption filler input end 2023 through the adsorption filler circulating pipeline 215. Illustratively, the third jet fan 214 discharges the powder adsorption particles on the second filter screen 203 out of the desorption tower 201 by means of the high-temperature organic vapor discharged from the second exhaust port 205 of the desorption tower 201, and sends the powder adsorption particles into the second gas-solid mixer 202 through the adsorption packing circulation pipeline 215, and the powder adsorption particles are desorbed again by the high-temperature organic vapor in the desorption tower 201. Similarly, the powder adsorption particles are repeatedly extracted and sent into the desorption tower 201, so that the mixed flow turbulence in the desorption tower 201 is enhanced, the mass transfer effect is improved, the regeneration time of the powder adsorption particles is shortened, and the operation cost of the desorption regeneration device 20 is reduced.

In this embodiment, the desorption regeneration device further comprises a nitrogen purging pipe 2030 and a nitrogen adjusting valve 2031, the nitrogen purging pipe 2030 and the nitrogen adjusting valve 2031 are connected with the organic steam circulation pipeline 210, wherein the nitrogen purging pipe 2030 is used for purging the system with nitrogen when the desorption regeneration device system is started, displacing air in the system space, and controlling the oxygen content of the system to be within the set standard; the nitrogen regulating valve 2031 is used for timely supplementing nitrogen consumed by the system in the running process of the system, regulating the oxygen content in the system and ensuring the running safety of the system.

In one embodiment, referring to fig. 3, the multi-stage hybrid filtration type organic exhaust gas adsorption purification system further includes an after-treatment device, and the desorption regeneration device 20 further includes a saturated packing collection and separation replenishment device and an organic vapor collection pipe 213. The organic vapor circulation pipe 210 is provided with a first valve 211, and the organic vapor collection pipe 213 is provided with a second valve 212; a first end of the organic steam circulation pipeline 210 is connected with an output end of the circulation heating fan 204, a second end of the organic steam circulation pipeline 210 is connected with an input end of the organic steam circulation heater 209, and an output end of the organic steam circulation heater 209 is connected with a saturated filler conveying pipe 2021 on the desorption regeneration device; the first end of the organic steam collecting pipeline 213 is connected with the output end of the circulating heating fan 204, the second end of the organic steam collecting pipeline 213 is connected with the post-treatment device 40, and the saturated filler collecting, separating and supplementing device is connected with a saturated filler conveying pipe on the desorption regeneration device. For example, when the opening of the first valve 211 and the closing of the second valve 212 are performed, the circulation heating fan 204 may draw out the high-temperature organic vapor in the desorption tower 201 from the second exhaust port 205, and then send the high-temperature organic vapor into the organic vapor circulation heater 209 through the organic vapor circulation pipe 210 for heating, and the heated high-temperature organic vapor enters the second gas-solid mixer 202 under the action of the circulation heating fan 204 for performing high-temperature desorption on the powder adsorption particles again. The organic vapor circulation heater 209 can raise the temperature of high-temperature organic vapor, and continuously maintain the gas in the desorption tower 201 in a high-temperature state, so that the powder adsorption particles are fully mixed with the high-temperature organic vapor in a high-temperature environment, and the powder adsorption particles are quickly desorbed and desorbed to form pure powder adsorption particles, thereby improving the desorption and regeneration efficiency of the powder adsorption particles. And the high-temperature organic steam is repeatedly extracted and sent into the desorption tower 201, so that the turbulence of the air flow in the desorption tower 201 is enhanced, the mass transfer effect is improved, the regeneration time of powder adsorption particles is shortened, and the operation cost of the desorption regeneration device 20 is reduced. When the first valve 211 is closed at the opening of the second valve 212, the circulation heating fan 204 can pump out the high-temperature organic vapor in the desorption tower 201 from the second exhaust port 205, and then send the high-temperature organic vapor to the post-treatment device 40 for treatment through the organic vapor collecting pipeline 213.

In this embodiment, the multistage hybrid filter type organic exhaust gas adsorption purification system further includes an aftertreatment device 40 including: condensation recovery unit, catalytic combustion unit (RCO) or regenerative combustion unit (RTO) wherein: the condensation recovery device is used for condensing the gas discharged by the organic steam collecting pipeline into liquid through the multistage condenser and collecting the liquid; catalytic combustion units (RCO) or regenerative combustion units (RTO) are used to oxidize and burn the organic exhaust gases, eliminating direct pollution of the organic exhaust gases to the atmosphere.

In one embodiment, the multistage hybrid filtration type organic waste gas adsorption purification system further comprises a control device, a concentration monitor instrument and a temperature monitor instrument, wherein the concentration monitor instrument and the temperature monitor instrument are installed in the desorption tower 201, and the concentration monitor instrument, the temperature monitor instrument and the organic steam circulation heater 209 are connected with the control device. The concentration monitoring instrument is used for detecting the concentration of the organic component of the gas in the desorption tower 201 and sending the concentration of the organic component to the control device; the temperature monitoring instrument is used for detecting the temperature of the gas in the desorption tower 201 and sending the temperature to the control device; the control means is for reducing the temperature of the organic vapor cycle heater 209 to reduce the operation load in the case where the concentration of the organic component is greater than or equal to a preset concentration and the temperature is greater than or equal to a preset temperature; in the case that the concentration of the organic component is less than the preset concentration and the temperature is less than the preset temperature, the temperature of the organic vapor circulation heater 209 is increased to increase the operation load, thereby ensuring the stable operation of the desorption regeneration device. For example, the preset concentration and the preset temperature may be regarded as the concentration and the temperature of the organic component of the gas in the desorption tower 201 when the purity of the powder adsorption particles in the desorption tower 201 reaches the time of re-inputting into the adsorption purification apparatus 10. When the concentration of the organic component in the gas in the desorption tower 201 is greater than or equal to the preset concentration and the temperature is greater than or equal to the preset temperature, it indicates that the powder adsorption particles in the desorption tower 201 are completely desorbed to become pure powder adsorption particles, and at this time, the temperature of the organic vapor circulation heater 209 can be reduced, and the power consumption of the organic vapor circulation heater 209 can be reduced. When the concentration of the organic component in the gas in the desorption tower 201 is less than the preset concentration and the temperature is less than the preset temperature, it indicates that the powder adsorption particles in the desorption tower 201 are not desorbed to pure powder adsorption particles, and at this time, the temperature of the organic vapor circulation heater 209 can be increased to further enhance the desorption capacity of the desorption tower 201 and improve the desorption efficiency.

In this embodiment, the first valve 211 and the second valve 212 are connected to control means for controlling the closing of the first valve 211 and the opening of the second valve 212 in the case where the concentration of the organic component is greater than or equal to a preset concentration and the temperature is greater than or equal to a preset temperature; in the case where the concentration of the organic component is less than the preset concentration and the temperature is less than the preset temperature, the opening of the first valve 211 and the closing of the second valve 212 are controlled. For example, when the powder adsorption particles in the desorption tower 201 are completely desorbed to become pure powder adsorption particles, the opening of the second valve 212 and the closing of the first valve 211 can be controlled by the control device, so that the gas discharged from the desorption tower 201 enters the post-treatment device for recovery through the organic vapor collecting pipeline 213, and the desorption and desorption of the powder adsorption particles are prevented from being affected by the high-concentration organic components. When the powder adsorption particles in the desorption tower 201 are not desorbed to become pure powder adsorption particles, the opening of the first valve 211 and the closing of the second valve 212 can be controlled by the control device, so that the gas discharged from the desorption tower 201 is heated by the organic steam circulation heater 209 and then returns to the desorption tower 201 for high-temperature desorption, and the desorption efficiency of the powder adsorption particles in the desorption tower 201 is improved.

In summary, according to the multistage mixing filtration type organic waste gas adsorption purification system provided by the invention, the organic waste gas and the powder adsorption particles are sent into the first gas-solid mixer 102 to drive the first unpowered pneumatic impeller 1022 to rotate, and the organic waste gas and the powder adsorption particles form a mixed gas flow under the rotation action of the first unpowered pneumatic impeller 1022 and then enter the adsorption filtration layer, so that the organic waste gas and the powder adsorption particles fully contact in the adsorption filtration layer, the contact area is greatly increased, the powder adsorption particles fully adsorb organic components in the organic waste gas, and the adsorption efficiency of the organic components is improved. The powder adsorption particles in the adsorption filter layer gradually sink onto the first filter screen plate 103 under the action of self gravity and form a filter layer with a certain thickness. The organic waste gas in the adsorption filter layer passes through the adsorption filter layer under the action of the first exhaust fan 104 and contacts with the powder adsorption particles again, and organic components in the organic waste gas are adsorbed by the powder adsorption particles again, so that the purification effect of the organic waste gas is improved, and the emission standard is guaranteed to be reached.

By sending the organic waste gas into the first gas-solid mixer 102 of the top adsorption filtration layer 121, under the action of the first exhaust fan 104, the organic waste gas enters the corresponding adsorption filtration layer from top to bottom through the first gas-solid mixer 102 of each adsorption filtration layer, and finally is discharged out of the adsorption tower 101 from the first exhaust port of the top adsorption filtration layer 121. Pure powder adsorption particles are sent into the first gas-solid mixer 102 of the bottom adsorption filtration layer 124, the powder adsorption particles adsorb organic waste gas in the bottom adsorption filtration layer 124 and fall onto the first filter screen 103 of the bottom adsorption filtration layer 124, the powder adsorption particles are sent into the first gas-solid mixer 102 of the upper adsorption filtration layer through the first discharge port 106 of the bottom adsorption filtration layer 124, the powder adsorption particles enter the corresponding adsorption filtration layers from bottom to top through the first gas-solid mixers 102 of each adsorption filtration layer, and finally are discharged out of the adsorption tower 101 from the first discharge port 106 of the top adsorption filtration layer 121. The higher the purity of the powder adsorption particles of each adsorption filtration layer from top to bottom, the stronger the adsorption capacity. The lower the concentration of the organic components in the organic waste gas from the top to the bottom of each adsorption filtration layer is, the easier the organic components are adsorbed and purified by the powder adsorption particles. After the organic waste gas with the lowest concentration of organic components enters the bottom adsorption filtration layer 124 and is adsorbed and purified by the powder adsorption particles with the strongest adsorption capacity, the concentration of the organic components of the organic waste gas is far lower than the emission standard, and the purification effect of the organic waste gas is improved.

Saturated powder adsorption particles discharged from the top adsorption filtration layer 121 are sent to the second gas-solid mixer 202 of the desorption regeneration device 20, and high-temperature organic steam is sent to the second gas-solid mixer 202 of the desorption regeneration device 20, so that the saturated powder adsorption particles are fully contacted with the high-temperature organic steam, organic components in the powder adsorption particles are rapidly evaporated, and the desorption efficiency of the organic components is improved. The desorption regeneration device 20 carries out high-temperature desorption on the saturated powder adsorption particles so as to recover pure powder adsorption particles, and sends the pure powder adsorption particles into the first gas-solid mixer 102 of the bottom adsorption filtration layer 124, thereby realizing the recovery and utilization of the powder adsorption particles, avoiding secondary pollution to the environment caused by the powder adsorption particles and saving the use cost of the powder adsorption particles. The adsorption purification device 10 and the desorption regeneration device 20 can continuously work, and the whole organic waste gas adsorption purification system has the advantages of low operation and maintenance cost and low regeneration energy consumption, and is convenient for industrialized popularization and use.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A multistage hybrid filtration organic waste gas adsorption purification system, comprising: adsorption purification device and desorption regenerating unit, wherein:

2. The multi-stage hybrid filter type organic exhaust gas adsorption purification system according to claim 1, wherein each layer of the adsorption filtration layer further comprises a first flow guide pipe, the lower layer of the two adjacent adsorption filtration layers further comprises a second flow guide pipe, the input end of the first flow guide pipe is connected with a first hybrid output end of the same layer, the output end of the first flow guide pipe faces a first filter screen plate of the same layer, the output end of the first flow guide pipe is larger than the input end of the first flow guide pipe, the output end of the second flow guide pipe is connected with the organic exhaust gas input end of the same layer, the input end of the second flow guide pipe faces the first filter screen plate of the upper layer, and the input end of the second flow guide pipe is larger than the output end of the second flow guide pipe, wherein:

3. The multi-stage hybrid filter type organic waste gas adsorption purification system according to claim 1, further comprising a saturated packing collection and separation supplementing device, an input end of the saturated packing collection and separation supplementing device is connected to a top layer first discharge port, a first output end of the saturated packing collection and separation supplementing device is connected to a top layer organic waste gas input end, and a second output end of the saturated packing collection and separation supplementing device is connected to the second desorption packing input end, wherein:

4. The multi-stage hybrid filter type organic waste gas adsorption purification system according to claim 1, wherein a first end of the first discharge pipe is connected with a first discharge port of the same layer, a second end of the first discharge pipe is connected with a first desorption filler input end or a second desorption filler input end of a next layer, an output end of the first jet fan is connected with a first discharge pipe of the same layer, and an input end of the first jet fan is connected with a first exhaust port formed below a first filter screen plate of the same layer, wherein:

5. The multi-stage hybrid filter type organic waste gas adsorption purification system according to claim 1, wherein a first end of the second discharge pipe is connected to the second discharge port, a second end of the second discharge pipe is connected to a first desorption filler input end of the bottom layer, an output end of the second jet fan is connected to the second discharge pipe, and an input end of the second jet fan is connected to a first exhaust port of the bottom layer, wherein:

6. The multi-stage hybrid filter type organic waste gas adsorption purification system according to claim 5, wherein the desorption regeneration device further comprises an adsorption packing circulation pipe and a third jet fan, a first end of the adsorption packing circulation pipe is connected with the second discharge port, a second end of the adsorption packing circulation pipe is connected with the second desorption packing input end, an output end of the third jet fan is connected with the adsorption packing circulation pipe, and an input end of the third jet fan is connected with the second exhaust port, wherein:

7. The multi-stage hybrid filtration type organic waste gas adsorption purification system according to claim 1, wherein the desorption regeneration device further comprises a nitrogen purge pipe and a nitrogen regulating valve, which are connected with an organic vapor circulation pipe, wherein:

8. The multi-stage hybrid filter type organic waste gas adsorption purification system according to claim 1, wherein the desorption regeneration device further comprises a saturated filler collecting, separating and supplementing device and an organic steam collecting pipeline, a first valve is arranged on the organic steam circulating pipeline, and a second valve is arranged on the organic steam collecting pipeline; the first end of the organic steam circulation pipeline is connected with the output end of the circulation heating fan, the second end of the organic steam circulation pipeline is connected with the input end of the organic steam circulation heater, and the output end of the organic steam circulation heater is connected with the saturated filler conveying pipe on the desorption regeneration device; the first end of the organic steam collecting pipeline is connected with the output end of the circulating heating fan, and the second end of the organic steam collecting pipeline is connected with the post-treatment device; the saturated filler collecting, separating and supplementing device is connected with a saturated filler conveying pipe on the desorption regeneration device.

9. The multi-stage hybrid filter type organic exhaust gas adsorption purification system according to claim 8, further comprising an aftertreatment device comprising: condensation recovery unit, catalytic combustion unit (RCO) or regenerative combustion unit (RTO) wherein:

10. The multi-stage hybrid filter type organic exhaust gas adsorption purification system according to claim 1, further comprising a control device and a gas detection device, the gas detection device being installed below each layer of the first filter screen plate, the control device connecting the gas detection device and the first jet fan, wherein:

The control device is used for controlling the first jet fan at the lower layer to continuously run under the condition that the gas data is larger than a preset data threshold value so as to increase the adding proportion of the adsorption filler; and under the condition that the gas data is smaller than or equal to a preset data threshold value, controlling the first jet fan at the lower layer to intermittently operate, and reducing the adding proportion of the adsorption filler.

11. The multistage hybrid filter-type organic exhaust gas adsorption purification system according to claim 1, further comprising a control device, a concentration monitor meter and a temperature monitor meter, the concentration monitor meter and the temperature monitor meter being installed in the desorption tower, the concentration monitor meter, the temperature monitor meter and the organic vapor circulation heater being connected to the control device, wherein: