CN210584337U - Active coke adsorption device of online circulating adsorbent - Google Patents
Active coke adsorption device of online circulating adsorbent Download PDFInfo
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- CN210584337U CN210584337U CN201921429404.7U CN201921429404U CN210584337U CN 210584337 U CN210584337 U CN 210584337U CN 201921429404 U CN201921429404 U CN 201921429404U CN 210584337 U CN210584337 U CN 210584337U
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Abstract
The utility model discloses an active coke adsorption device containing an online circulating adsorbent, which belongs to the field of flue gas purification in the environmental protection industry and is mainly suitable for a device for adsorbing acidic substances and dioxin in the purification of incineration tail gas of household garbage and hazardous waste garbage; the active coke particles flow in an online circulation manner; the active coke adsorption beds can be arranged into one or more beds, and the actual adsorption bed area and the number of the adsorption beds are designed according to the specific smoke gas volume; each active coke adsorption bed is provided with an independent bin chamber, is provided with a partition valve and can be overhauled and operated on line; the active coke adsorption equipment can screen powdery materials while circulating the materials, and screen all the powdery active carbon out of the adsorption tower; the active coke adsorption tower has the function of sealing the flue gas while filtering the flue gas.
Description
Technical Field
The utility model relates to a on the gas cleaning system, concretely relates to is arranged in the device of desorption flue gas acid material and dioxin at domestic waste, the useless waste incineration tail gas clean-up system of danger.
Background
At present, the household garbage and dangerous waste garbage incineration process is widely popularized in China, in order to avoid atmospheric pollution caused again while garbage reduction is carried out, the emission index of garbage incineration tail gas is gradually improved, and the environmental protection requirement is gradually strict.
At present, a hazardous waste incineration tail gas purification system is gradually mature, but the control pressure of acid substances and dioxin in smoke is still huge, especially in hazardous waste, the original concentration of pollutants generated by combustion is large and is generally two to three times higher than that of household garbage incineration, but the emission index is close to that of household garbage tail gas emission index, and even HCl and dioxin are difficult to control.
The most common treatment process in the existing treatment process of the incineration tail gas of the household garbage is a treatment process of 'semi-dry method + bag-type dust remover + activated carbon powder adsorption', but when the upstream incineration state is not ideal, dioxin generated in the system is difficult to be completely adsorbed by trace activated carbon powder in a downstream dust remover. Especially in old factories with long operation years, the emission index of dioxin reaching 0.1ng/NET is difficult to achieve.
The existing activated carbon adsorption equipment mainly comprises activated carbon powder spraying and activated carbon fixed bed adsorption. The former needs to be continuously sprayed into the flue gas with higher consumption, and the treatment difficulty of downstream fly ash is increased while the consumption is higher; the form of the fixed bed of the latter causes that the filtering air quantity is seriously limited, the recovery difficulty is large, and the on-line regeneration is difficult.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing an active coke adsorption device of an online circulating adsorbent.
In order to achieve the above purpose, the utility model discloses select particle diameter 5mm for use, active burnt granule that length is 7 ~ 9mm has adopted following technical scheme as the adsorption bed raw materials:
the utility model discloses an active coke adsorption device of an on-line circulating adsorbent, which comprises an adsorption tower body, a discharge valve positioned at the bottom of the adsorption tower body, a screw conveyer positioned below the discharge valve, a vibrating screen positioned at the discharge end of the screw conveyer, a sealed bin positioned at the top of the adsorption tower body and a bucket elevator; the bucket elevator lifts the active coke particles screened by the vibrating screen and conveys the active coke particles to a sealing bin at the top of the adsorption tower body; an adsorption bed is arranged in the adsorption tower body, and is provided with an air inlet and an air outlet; an air inlet layer, an adsorption layer and an air outlet layer are transversely and sequentially arranged in the adsorption bed according to the gas flowing direction, and the adsorption layer is respectively separated from the air inlet layer and the air outlet layer through a pore plate; the sealed bin is connected with the top of the adsorption layer through a pipeline, and the active coke particles and the powder falling from the bottom of the adsorption layer leave the adsorption tower body through the discharge valve.
As the preferred scheme of the utility model, one or more adsorption beds are arranged in the adsorption tower body, the adsorption beds are mutually independently sealed and are respectively provided with an air inlet, an air outlet and a discharge valve, and the independent valves arranged through pipelines and pipelines are connected with a sealed bin; switch valves are arranged on the air inlet, the air outlet and the discharge valve. The active coke adsorption bed data is selected according to the actual smoke gas amount, each active coke adsorption bed is provided with an independent bin chamber and a partition valve, and the function of online maintenance operation can be met; in view of the danger of burning and exploding of the active coke, the whole equipment can be provided with a bypass for emergency switching of accidents. An electric ash discharge valve is arranged at the lower part of each adsorption bed bin and collected to a vibrating screen by a screw conveyor.
As a preferable scheme of the utility model, the adsorption layer is formed by clamping active coke particles by two layers of pore plates; the diameter of the opening of the pore plate is less than 5mm, so that active coke particles are prevented from separating from the adsorption bed and entering an air outlet layer or an air inlet layer.
As the utility model discloses an optimal scheme, adsorption tower body bottom awl fill angle be greater than 60 degrees, and the adsorption bed interior top is equipped with the water conservancy diversion baffle, no blind spot during active burnt circulation avoids active burnt heat accumulation to explode. The cone hopper is provided with a fluidizing device. Ensures that the particles in the whole active coke adsorption bed are completely fluidized and circulated, and has no heat storage dead angle.
As the utility model discloses an optimal selection scheme, every adsorption bed all is furnished with thermal resistance and emergent spraying equipment, the active burnt temperature of real-time supervision, the emergent spraying water valve water spray of chain control when thermal resistance detects the overtemperature, avoids the heat accumulation of active burnt to explode.
As the preferred scheme of the utility model, the vibrating screen is provided with a powder outlet and a particle outlet, and the mesh distance of the screen is 5 mm; all particles with the diameter less than 5mm are screened to the lower part of the vibrating screen, and the particles with the diameter more than or equal to 5mm are conveyed to a downstream bucket elevator.
As the preferred scheme of the utility model, the outlet of the bucket elevator is connected to the top sealing bin of the adsorption tower body through a chute which is provided with a bin wall vibrator; the feed inlet of the sealed bin is provided with a pneumatic gate valve.
The adsorption tower of the utility model is mainly used for adsorbing acidic substances and dioxin in tail gas purification, in order to avoid long-time heat storage and burning explosion of active coke particles, the active coke particles in the adsorption bed circularly flow on line, and the equipment tightness is kept and the continuous circular flow is kept while pollutants are adsorbed; and sieving the active coke powder in the flowing process; continuously discharging materials through a bottom discharge valve, outputting particles through a screw conveyor, conveying the particles to a vibrating screen, screening powdery materials while conveying the particles to a bucket elevator by the vibrating screen, and screening all powdery activated carbon out of an adsorption tower; the discharged active coke is lifted to a top sealing bin by a bucket elevator after powder is removed by a vibrating screen, and then is continuously discharged to the active coke adsorption tower body from the top sealing bin, active coke is required to be continuously supplemented at the position, so that the high material level in the sealing bin is continuously kept in a high material level state, and a smoke sealing effect is further achieved (the lower part of the sealing bin is connected with each adsorption bed, the height of a connecting pipeline and the height of the sealing bin body have an air locking function, and when the device runs on line, external air cannot be sucked into the device); the adsorption bed is always kept in a full state without flue gas short circuit.
The utility model discloses an active coke adsorption tower is located tail gas clean system's last one adsorption equipment. And on the premise that the process dust and acid pollutants in the front section are removed in a large amount, the device is used for finally adsorbing and removing acid substances and dioxin. The heat accumulation is avoided through the circulation in the adsorption process, the burning and explosion risks of the active coke are effectively avoided, and the utilization rate of the active coke is utilized to a greater extent.
Drawings
Fig. 1 is a schematic view of a flow chart of an active coke adsorption device of an on-line circulation adsorbent according to the present invention.
Fig. 2 is a schematic front view and sectional view of an active coke adsorption device body of the on-line circulation adsorbent of the present invention.
Fig. 3 is a schematic sectional view of an active coke adsorption device body of the on-line circulation adsorbent of the present invention.
In the figure, 1-vibrating screen; 2-a screw conveyor; 3-a discharge valve; 4-a fluidizing device; 5-inlet and outlet air doors; 6, an emergency spraying device; 7, sealing the bin at the top; 8-pneumatic gate valve; 9-bin wall vibrator; 10-bucket elevator; 11-temperature thermocouple; 12-a flow guide baffle; 13-air inlet layer orifice plate; 14-air outlet layer pore plate; 51-an air inlet; 52-air outlet; a-the width of the inlet and outlet of a single bin is indicated; b-single adsorption bed width schematic;
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
As shown in the flow chart of fig. 1, the activated coke adsorption device of the on-line circulating adsorbent of the present invention comprises an adsorption tower body, a discharge valve 3 located at the bottom of the adsorption tower body, a screw conveyor 2 located below the discharge valve, a vibrating screen 1 located at the discharge end of the screw conveyor, a sealed bin 7 located at the top of the adsorption tower body, and a bucket elevator 10;
the bucket elevator lifts the active coke particles screened by the vibrating screen and conveys the active coke particles to a sealing bin 7 at the top of the adsorption tower body; an adsorption bed is arranged in the adsorption tower body, and is provided with an inlet and outlet air door 5; an air inlet layer, an adsorption layer and an air outlet layer are transversely and sequentially arranged in the adsorption bed according to the gas flowing direction, and the adsorption layer is respectively separated from the air inlet layer and the air outlet layer through a pore plate; the sealed bin is connected with the top of the adsorption layer through a pipeline, and the active coke particles and the powder falling from the bottom of the adsorption layer leave the adsorption tower body through the discharge valve.
The inlet and outlet air door 5 comprises an air inlet 51 and an air outlet 51; the flue gas enters the air inlet layer after passing through the air inlet 51 and then enters the adsorption layer through the air inlet layer pore plate 13; in the adsorption layer, the flue gas is contacted and adsorbed with the active coke, and the adsorbed flue gas enters the air outlet layer through the air outlet layer pore plate 14 and finally leaves the adsorption tower body through the air outlet 51. The active coke enters from the top of the adsorption layer, is dispersed in the width direction of the adsorption layer after passing through the diversion baffle 12, and flows out from the bottom of the adsorption tower body after adsorbing flue gas, wherein the bottom of the adsorption tower body is of a bucket-shaped structure consisting of an air inlet layer pore plate 13 and an air outlet layer pore plate 14, and in the embodiment, the included angle formed by the air inlet layer pore plate 13 and the air outlet layer pore plate 14 is 60 degrees. No dead zone exists during the circulation of the active coke, and the heat accumulation and burning explosion of the active coke are avoided. In the embodiment, the cone hopper is provided with a fluidizing device 4; ensures that the particles in the whole active coke adsorption bed are completely fluidized and circulated, and has no heat storage dead angle.
Fig. 2 and 3 show a specific embodiment of the present invention. The thickness of a single adsorption bed of the complete equipment is 500mm, the width of a corresponding independent sealing chamber is 1248mm, and the width of an air inlet and an air outlet is 300 mm. Each chamber is divided into three layers, namely an air inlet layer, an adsorption layer and an air outlet layer, wherein flue gas enters from the air inlet layer, passes through an adsorption bed of the adsorption layer and is discharged from the equipment from the air outlet layer.
When the equipment is started, the three bin bodies are all opened, so that the three adsorption beds are all put into use, simultaneously, the ash discharge valve at the lower part, the screw conveyor 2, the vibrating screen 1, the bucket elevator 10 and the pneumatic gate valve 8 are all opened, and the activated coke particles start to circulate. The vibrating screen 1 is provided with a powder outlet and a granular material outlet, the mesh distance of the screen is 5mm, and a small amount of powder is exposed to the sun and is manually treated. The outlet of the bucket elevator is connected to the top sealing bin of the adsorption tower body through a chute, and the chute is provided with a bin wall vibrator 9; the feed inlet of the sealed bin is provided with a pneumatic gate valve 8.
The sealed material bin on the top of the bin is provided with a bucket elevator feed inlet and an artificial feed inlet, and when the material level of the high-level sealed bin is lowered to be lower than the high material level, the high-level sealed bin is supplemented by artificial feeding.
Each adsorption bed is provided with a temperature thermocouple 11 and an emergency spraying device 6, the temperature of the active coke is monitored in real time, and the thermocouple 11 detects that the temperature is over-temperature and then controls an emergency spraying water valve to spray water in a linkage manner, so that the heat accumulation and burning explosion of the active coke are avoided. Adsorb internal temperature in the internal thermal resistance real-time supervision storehouse of bed storehouse during the operation, the utility model discloses set for the temperature and begin to report to the police when reaching 122 ℃, the emergent spray nozzle of when lasting rising to 128 ℃ opens, spouts the rapid cooling water cooling with the bin interior.
Claims (9)
1. An active coke adsorption device of an on-line circulating adsorbent is characterized by comprising an adsorption tower body, a discharge valve positioned at the bottom of the adsorption tower body, a screw conveyor positioned below the discharge valve, a vibrating screen positioned at the discharge end of the screw conveyor, a sealing bin positioned at the top of the adsorption tower body and a bucket elevator; the bucket elevator lifts the active coke particles screened by the vibrating screen and conveys the active coke particles to a sealed bin at the top of the adsorption tower body; an adsorption bed is arranged in the adsorption tower body, and is provided with an air inlet and an air outlet; an air inlet layer, an adsorption layer and an air outlet layer are transversely and sequentially arranged in the adsorption bed according to the gas flowing direction, and the adsorption layer is respectively separated from the air inlet layer and the air outlet layer through a pore plate; the sealed bin is connected with the top of the adsorption layer through a pipeline.
2. The activated coke adsorption device of the on-line circulation adsorbent according to claim 1, wherein one or more adsorption beds are arranged in the adsorption tower body, the adsorption beds are sealed independently from each other, are respectively provided with an air inlet, an air outlet and a discharge valve, and are respectively and independently connected with the sealed bin through a pipeline; switch valves are arranged on the air inlet, the air outlet and the discharge valve; a valve is arranged on the pipeline connecting the adsorption bed and the sealed bin.
3. The activated coke adsorption unit of the in-line circulating adsorbent of claim 1, wherein said adsorption layer is formed by activated coke particles enclosed therein by two layers of perforated plates; the diameter of the opening of the pore plate is less than 5 mm.
4. The active coke adsorption unit of the on-line circulating adsorbent of claim 1, wherein the mesh pitch of the vibrating screen is 5mm, and a powder outlet and a granular material outlet are provided.
5. The active coke adsorption unit of the on-line circulating adsorbent of claim 1, wherein a flow guide baffle is arranged in the adsorption bed.
6. The activated coke adsorption unit of on-line circulating adsorbent of claim 1, wherein each adsorption bed is equipped with a thermal resistor and an emergency spray device to monitor the temperature of activated coke in real time to avoid thermal storage and explosion of activated coke.
7. The activated coke adsorption unit of on-line circulating adsorbent of claim 1, wherein the bottom of said adsorption bed is provided with a fluidizing device for fluidizing the activated coke in the adsorption bed.
8. The active coke adsorption device of the on-line circulation adsorbent of claim 1, wherein the outlet of the bucket elevator is connected to the top sealing bin of the adsorption tower body through a chute, and the chute is provided with a bin wall vibrator; the feed inlet of the sealed bin is provided with a pneumatic gate valve.
9. The active coke adsorption device of the on-line circulation adsorbent according to claim 1, wherein the particle size of the active coke particles is 5mm, and the length is 7-9 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429404.7U CN210584337U (en) | 2019-08-30 | 2019-08-30 | Active coke adsorption device of online circulating adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921429404.7U CN210584337U (en) | 2019-08-30 | 2019-08-30 | Active coke adsorption device of online circulating adsorbent |
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| Publication Number | Publication Date |
|---|---|
| CN210584337U true CN210584337U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921429404.7U Active CN210584337U (en) | 2019-08-30 | 2019-08-30 | Active coke adsorption device of online circulating adsorbent |
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| CN (1) | CN210584337U (en) |
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- 2019-08-30 CN CN201921429404.7U patent/CN210584337U/en active Active
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