CN217568774U - High-temperature regeneration device for particle adsorbent moving bed - Google Patents
High-temperature regeneration device for particle adsorbent moving bed Download PDFInfo
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- CN217568774U CN217568774U CN202221682860.4U CN202221682860U CN217568774U CN 217568774 U CN217568774 U CN 217568774U CN 202221682860 U CN202221682860 U CN 202221682860U CN 217568774 U CN217568774 U CN 217568774U
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Abstract
The utility model discloses a granular adsorbent removes bed high temperature regenerating unit. The device comprises a profile frame; the interior of the section bar frame is divided into a plurality of material areas of which the upper ends are connected with the pre-storage bin and the lower ends are connected with the discharging system through partition plates; the section bar frame is divided into a cooling area and a desorption area from bottom to top; the partition plates in the cooling zone and the desorption zone are ventilating screen plates; the cooling zone is connected with the desorption zone through an external device; the cooling area and the desorption area are both provided with a plurality of temperature sensors; the bottom of the pre-storage bin, the bottom of the cooling area and the bottom of the desorption area are provided with material level meters. The utility model is suitable for a concentrate in batches in succession and carry out the regeneration of granule adsorbent, have that desorption temperature is high, area is little, the treatment effeciency is high, have low carbon, energy-conserving, safe characteristics concurrently.
Description
Technical Field
The utility model relates to a granular adsorbent regeneration technical field, concretely relates to granular adsorbent removes bed high temperature regenerating unit.
Background
At present, honeycomb activated carbon and zeolite molecular sieve rotating wheels are widely adopted to adsorb pollutants in projects for treating waste gas. This kind of equipment is usually designed for absorbing the desorption integration in integrative shell, can't continuous production in the thermal desorption cycle, and the desorption temperature is restricted, and the desorption temperature of general active carbon should be less than 120 ℃, and the molecular sieve needs to be less than 200 ℃. For some high boiling point compounds, the conventional desorption is difficult to remove, and the compounds are continuously accumulated in the adsorbent, so that the subsequent absorption and desorption efficiency is gradually reduced. Especially when the waste gas contains dust and oil, the common problems of easy blockage of the adsorbent, low adsorption efficiency, large desorption difficulty, poor safety and the like exist.
The particle type adsorbent is adopted, the two processes of adsorption and desorption are mechanically separated, namely, a device for independent desorption is additionally arranged at the far end, so that the particle type adsorbent forms a set of circulating flow closed loop line in the particle type adsorbent through a conveying system, the desorption temperature is increased, the adsorbent is deeply desorbed, and the industrial problems can be solved.
Patent CN 202021684645.9 discloses a stacked in-situ thermal desorption additional heat equipment, which generates heat through a combustion device and conducts the heat to a heat dissipation plate in a stacked form through a pipeline wrapped with an insulating material, and the heat dissipation plate is distributed and inserted into an adsorbent or other media to be desorbed to directly heat the materials. The disadvantages of this patent are: the material pile is too large in volume, the heat conduction efficiency of the granular pieces is low, the desorption time is long, the energy consumption is high, and the equipment investment cost is high; under the non-oxygen-insulated environment, the adsorbent and the releaser have certain flammability, and the local temperature near the heat dissipation plate is too high, so that certain potential safety hazard exists.
Patent CN 214076696U discloses a silica gel adsorbent regeneration device with air cooling function, which dries and calcines silica gel containing water and oil through a plurality of small drying trays and large drying trays which are distributed in a cross manner, and effectively cools the silica gel when the silica gel is discharged through a cooling part below the drying and calcining part. The device adopts a mechanical blanking method, has high energy consumption, is only suitable for adsorbents such as silica gel and the like with high yield strength, and has the problems of large abrasion, large dust and the like on activated carbon, molecular sieves and the like.
SUMMERY OF THE UTILITY MODEL
To the technical problem that exists in the field, the utility model provides a granular adsorbent removes bed high temperature regenerating unit. The utility model is suitable for a concentrate in batches in succession and carry out the regeneration of granule adsorbent, have that desorption temperature is high, area is little, the treatment effeciency is high, have low carbon, energy-conserving, safe characteristics concurrently.
A high-temperature regenerating device of a particle adsorbent moving bed comprises a section bar frame; the interior of the section bar frame is divided into a plurality of material areas, the upper ends of the material areas are connected with a pre-storage bin for containing granular adsorbent, and the lower ends of the material areas are connected with a discharging system through partition plates; the section bar frame is divided into a cooling area provided with a cold air inlet and a cold air outlet and a desorption area provided with a hot air inlet and a hot air outlet from bottom to top; the partition plates in the cooling zone and the desorption zone are ventilating mesh plates; the cold air outlet is connected with the hot air inlet through an external dust removal device, a fan and a heating device; the cooling area and the desorption area are both provided with a plurality of temperature sensors; the bottom of the pre-storage bin is provided with a material level meter at the bottom of the cooling area and the bottom of the desorption area.
In the high-temperature regenerating device of the particle adsorbent moving bed: the inside material district that is connected through the baffle into a plurality of upper end and prestoring storehouse connection, lower extreme and discharge system are connected that divides into of section bar frame, and the material layer between the baffle is filled into after the section bar frame is filled into from top prestoring storehouse to the granule adsorbent. The cooling zone with the baffle in the desorption district is ventilative otter board, can make the granular adsorbent restrict in the material district, and gas can pass ventilative otter board simultaneously. When the device is operated, gas enters from the cold air inlet, cools the granular adsorbent in the cooling area and is discharged from the cold air outlet; and after being discharged, the gas enters from a hot air inlet after being dedusted and heated, desorbs the granular adsorbent in the desorption area, and is discharged from a hot air outlet. Wherein, the cold wind export is connected with hot-blast import through external dust collector, fan, heating device, has realized gaseous recycle. After the desorption, open discharge system, unload the granule adsorbent of cooling space through the charge level indicator, the granule adsorbent in desorption district gets into the cooling space this moment, and the granule adsorbent in the prestoring storehouse gets into the desorption district, accomplishes the regeneration of adsorbent once. The particulate adsorbent in the top pre-storage bin may be replenished by a level gauge for the next adsorbent regeneration. The cooling zone with the desorption district all is provided with a plurality of temperature sensor and is used for monitoring device temperature when operation.
Preferably, the shell of the profile frame corresponding to the desorption area is a double-layer shell, and the inside of the double-layer shell is filled with heat insulation materials. The fully-sealed heat-insulating layer can effectively prevent the heat-insulating material from entering water, reduce heat loss and greatly improve the heating speed and sensitivity of the desorption area.
Preferably, the horizontal thickness of the material area is less than 1000mm, so that the wind resistance under the working state is ensured to have economical efficiency.
Preferably, the partition plates between the pre-storage bin and the desorption area, between the desorption area and the cooling area, and between the cooling area and the discharge system are sealing plates, so that the overflow of gas is effectively avoided.
Preferably, block bodies for blocking gas passages between the profile frame and the partition plate are fixedly arranged in the cooling area and the desorption area; the block blocks obstruct the air channel between the section bar frame and the clapboard, improves the wind flow direction in the device and avoids the air from directly moving in the vertical direction. Meanwhile, the contact condition of gas and the particle adsorbent in the material area is improved, the operation efficiency is improved, and the working energy consumption of the device is reduced.
Preferably, a fire extinguishing system is arranged at the upper end in the pre-storage bin; further preferably, the fire extinguishing system is a water spraying cooling fire extinguishing system; further preferably, when the real-time temperature of any one temperature sensor in the device is more than or equal to the ignition point of the granular adsorbent, the fire extinguishing system in the pre-storage bin is started. The upper end in the pre-storage bin is provided with a fire extinguishing system, and when the real-time temperature is higher than the ignition temperature of the adsorbent, the fire extinguisher is started, so that the operation safety of the device is ensured. Fire water from top to bottom soaks whole material district through adsorbent granule clearance, and bottom discharge system derives the moisture material, and rethread hot air fast drying inner wall back can resume follow-up desorption operation in the short time, has reduced the loss of granule adsorbent.
Preferably, a steam thermal desorption auxiliary system capable of injecting steam into the desorption region is arranged in the middle material section of the desorption region; further preferably, when the real-time temperature interval of the temperature sensor in the desorption area is between 150 ℃ and 250 ℃, the steam thermal desorption auxiliary system is started. Steam thermal desorption auxiliary system has reduced the interior oxygen content of desorption confined space through pouring into steam into the desorption district in suitable temperature interval, has reduced the rapid heating up potential safety hazard. The used steam can be recycled steam, and the surplus heat energy or secondary recycled heat energy of the boiler replaces power consumption heat energy, so that the energy consumption is reduced. The injected steam also plays a role in assisting desorption, and when the steam is introduced at the temperature of between 150 and 250 ℃, the steam can enter the inside of the pore channel of the adsorbent to assist the desorption of the granular adsorbent.
Preferably, the discharging control valve of the discharging system is a temperature-resistant star-shaped discharging valve or an electric gate valve or a pneumatic gate valve.
Preferably, an anti-empty drum device is arranged above the discharging system; preferably, the anti-empty-blowing device is composed of one or more of a back-blowing system, a vibration motor and a built-in activation bin. In general storage bins, especially storage bins which are stored for a long time, some materials at the bottom of the storage bins can be caked and agglomerated due to the properties of the materials, and the material surface forms a steep discharge hopper hollow hole which cannot flow and block a material path. The anti-hollowing device is arranged to break the agglomerated bottom material area by using mechanical external force to facilitate continuous and orderly desorption and feeding work of the device.
Preferably, the material area is single row or multi-row according to the actual use requirement.
The utility model discloses a working procedure, include:
(a) Filling the granular adsorbent to be regenerated into the section frame from a pre-storage bin at the top of the device, and filling the granular adsorbent into the material layer between the partition plates;
(b) Gas enters from the cold air inlet, cools the granular adsorbent in the cooling area, and is discharged from the cold air outlet; the discharged gas is dedusted, heated, enters from a hot air inlet, desorbs the granular adsorbent in the desorption area, and is discharged from a hot air outlet;
(c) After the desorption is finished, opening the discharging system, emptying the granular adsorbent in the cooling zone through the material level meter, enabling the granular adsorbent in the desorption zone to enter the cooling zone, and enabling the granular adsorbent in the pre-storage bin to enter the desorption zone to finish the regeneration of the adsorbent for one time;
(d) Supplementing the particle adsorbent in the top pre-storage bin through a level indicator, and preparing for the next round of desorption;
(e) Repeating the steps (a) to (d) until all the granular adsorbents to be regenerated are desorbed;
the high-temperature regeneration device of the particle adsorbent moving bed is in an empty box state when in a standby state;
the gas is hot air, hot nitrogen or steam.
The utility model discloses a with inhale desorption integration equipment and desorption equipment alone comparatively speaking, its outstanding advantage has at least:
1. the utility model is particularly suitable for the matching auxiliary system of the separation type adsorption equipment of the flowing particle adsorbent, can continuously and intensively regenerate the particle adsorbent in batches, realizes the safe separation of the adsorption and desorption processes, prolongs the service cycle of the adsorption area, improves the utilization rate of the equipment, and is beneficial to the uninterrupted production;
2. the desorption temperature can be greatly increased, and more high-boiling-point VOCs pollutants can be released in shorter unit time;
3. on the premise of ensuring the safe operation of the device, the desorption temperature which can be endured by the equipment is improved, so that the adsorption and activation capacity of the granular adsorbent is enlarged, the batch frequency of replacing the adsorbent is reduced, and the environmental-friendly operation and maintenance cost is saved;
4. the two independent fire-fighting systems (the steam thermal desorption auxiliary system and the water spraying cooling fire-extinguishing system) reduce the potential safety hazard of desorption and temperature rise;
5. the equipment has compact structure, and the occupied area of the structure is 10m 2 The device can be attached to the outer wall of a factory building, so that the device is convenient to install;
6. the device is provided with a sectional control temperature sensor and a material level display, and is interlocked and linked with a hot air blowing system by an integrated program, so that the mechanical automation degree is high, and the failure rate is low;
7. The method can be used for treating waste gas doped with some complex VOCs with special components, such as waste gas containing grease oil drops, metal powder and floating dust;
8. the operation treatment efficiency during desorption is high, the failure rate is low, the adsorbent treated in a single batch is small in size, so that the air volume of the released concentrated waste gas is small, and the VOCs incineration treatment equipment in the later period can be miniaturized; the released concentrated waste gas has desorption waste heat, so that the energy consumption of incineration equipment is reduced;
9. the equipment has wide application range and can be applied to the regeneration of various granular adsorbents such as activated carbon, molecular sieves, silica gel, resin and the like.
Drawings
Fig. 1 is a schematic structural diagram of a moving bed high-temperature regeneration device of a particulate adsorbent, which comprises an anti-empty drum device 10, a fire extinguishing system 11 and a steam thermal desorption auxiliary system 16 according to an embodiment.
Fig. 2 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A single-unit granular adsorbent moving bed high-temperature regeneration apparatus according to an embodiment, which includesbase:Sub>A double-layered casing 9 filled with thermal insulation materials 4,base:Sub>A sealing plate for preventing gas communication between different work zones, blocks 17, and an anti-idling device 10.
Fig. 3 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A double-row granular adsorbent moving bed high-temperature regeneration apparatus according to an embodiment, which includesbase:Sub>A double-layered casing 9 filled with heat insulating materials 4,base:Sub>A sealing plate for preventing gas communication between different work zones, and an air-blowing prevention apparatus 10.
Description of reference numerals:
the device comprises a section bar frame (1), a partition plate (2), a particle adsorbent (3), a heat-insulating material (4), a pre-storage bin (5), a discharging system (6), a material level meter (7), a temperature sensor (8), a double-layer shell (9), an air-defense drum device (10), a fire extinguishing system (11), a cold air inlet (12), a cold air outlet (13), a hot air inlet (14), a hot air outlet (15), a steam thermal desorption auxiliary system (16) and a block body (17).
Detailed Description
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings and specific embodiments so that those skilled in the art can easily implement and practice the present disclosure. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments of the disclosure set forth herein.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Reference will now be made in detail to embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings.
Fig. 1 is a schematic structural diagram of a moving bed high-temperature regeneration device of a particulate adsorbent, which comprises an anti-empty drum device 10, a fire extinguishing system 11 and a steam thermal desorption auxiliary system 16 according to an embodiment. In fig. 1, the partition plate 2 is not shown, and the partition plate 2 is an essential structure of the device of the present invention, and the partition plate 2 is naturally provided in the present embodiment.
Referring to fig. 1, the present embodiment provides a moving bed high temperature regeneration apparatus of a particulate adsorbent. The device comprises a profile frame 1; the interior of the section bar frame 1 is divided into a material area, the upper end of the material area is connected with a pre-storage bin 5 for containing granular adsorbent, and the lower end of the material area is connected with a discharging system 6 through a partition plate 2; the section bar frame 1 is divided into a cooling area provided with a cold air inlet 12 and a cold air outlet 13 and a desorption area provided with a hot air inlet 14 and a hot air outlet 15 from bottom to top; the partition plates 2 in the cooling zone and the desorption zone are ventilating mesh plates; the cold air outlet 13 is connected with the hot air inlet 14 through an external dust removal device, a fan and a heating device; the cooling area and the desorption area are both provided with a plurality of temperature sensors 8; the bottom of the pre-storage bin 5, the bottom of the cooling area and the bottom of the desorption area are provided with material level meters 7.
Comprehensively consider the wind resistance under the device operating condition, the economic nature of operating mode and production, the horizontal thickness in material district is less than 1000mm. The discharging control valve of the discharging system 6 is a temperature-resistant star-shaped discharging valve or an electric gate valve or a pneumatic gate valve.
In the present embodiment, the device further includes an anti-empty-drum device 10, a fire extinguishing system 11, and a steam thermal desorption auxiliary system 16. The method specifically comprises the following steps:
an anti-hollowing device 10 is arranged above the discharging system 6; the anti-empty-blowing device 10 is composed of one or more of a back blowing system, a vibration motor and a built-in activation bin. The anti-hollowing device is arranged to break the agglomerated bottom material area by using mechanical external force to facilitate continuous and orderly desorption and feeding work of the device.
The upper end in the pre-storage bin 5 is provided with a fire extinguishing system 11; the fire extinguishing system 11 is a water spraying cooling fire extinguishing system; when the real-time temperature of any one temperature sensor 8 in the device is more than or equal to the ignition point of the granular adsorbent 3, the fire extinguishing system 11 in the pre-storage bin 5 is started. When the real-time temperature is higher than the ignition temperature of the adsorbent, the fire extinguisher is started, and the system safety is ensured. Fire water from top to bottom soaks entire system through adsorbent granule clearance, and bottom discharge system derives the moisture material, rethread hot air after the quick drying inner wall, can resume follow-up desorption operation in the short time, has reduced the loss of granular adsorbent.
A steam thermal desorption auxiliary system 16 capable of injecting steam into the desorption area is arranged at the middle section of the desorption area; when the real-time temperature interval of the temperature sensor 8 in the desorption area is 150-250 ℃, the steam thermal desorption auxiliary system 16 is started. The steam thermal desorption auxiliary system reduces the oxygen content in the desorption closed space by injecting steam into the desorption area in a proper temperature interval, reduces the potential safety hazard of rapid temperature rise, and replaces power consumption heat energy with surplus heat energy or secondary reuse heat energy of the boiler.
The specific working process of the embodiment is as follows:
the inside material district that is connected with pre-storage storehouse 5 in the upper end, the lower extreme is connected with discharge system 6 that divides into through baffle 2 in section bar frame 1, fills the material layer between the baffle 2 after granule adsorbent 3 pours into section bar frame 1 from top pre-storage storehouse 5 into. The cooling zone with baffle 2 in the desorption district is ventilative otter board, can make granular adsorbent 3 restrict in the material district, and gas can pass ventilative otter board simultaneously. When the device is operated, air enters from a cold air inlet 12 to cool the granular adsorbent 3 in the cooling area and is discharged from a cold air outlet 13; the discharged gas is dedusted and heated, enters from a hot air inlet 14, desorbs the granular adsorbent 3 in the desorption area, and is discharged from a hot air outlet 15. After the desorption, open discharge system 6, unload the granular adsorbent 3 of cooling space through charge level indicator 7, the granular adsorbent 3 in desorption district gets into the cooling space this moment, and granular adsorbent 3 in the prestore storehouse 5 gets into the desorption district, accomplishes the regeneration of adsorbent once. The particulate adsorbent 3 in the top pre-storage bin 5 can be replenished for the next adsorbent regeneration by means of a level gauge 7. The cooling zone with the desorption district all is provided with a plurality of temperature sensor 8 and is used for the monitoring device temperature when operation. The upper end sets up fire extinguishing systems 11 in the storage storehouse 5 in advance, the middle section in desorption district be provided with can to the thermal desorption auxiliary system 16 of steam is poured into to the desorption district, detects target temperature when temperature sensor, and above-mentioned two sets of fire extinguishing systems start, have reduced device work potential safety hazard. An anti-hollowing device 10 is arranged above the discharging system 6, and the anti-hollowing device 10 is started to shatter and destroy the bottom material area of the agglomerated plate.
Fig. 2 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A single-unit granular adsorbent moving bed high-temperature regeneration apparatus according to an embodiment, which includesbase:Sub>A double-layered casing 9 filled with thermal insulation materials 4,base:Sub>A sealing plate for preventing gas communication between different work zones, blocks 17, and an anti-idling device 10. In fig. 2, the level gauge 7, the temperature sensor 8, and the double-layered housing 9 are not shown. And the level gauge 7 and the temperature sensor 8 are used as the necessary structure of the device of the utility model, and the level gauge 7 and the temperature sensor 8 are naturally arranged in the embodiment. In fig. 2, the heat insulating material 4 is shown, and in the present embodiment, a double-walled casing 9 is naturally provided.
In the present embodiment, the apparatus further includes a double-layered casing 9 filled with heat insulating material 4, a sealing plate for preventing gas communication between different work areas, a block 17, and an anti-hollowing device 10. The material area of the device is in a single-row form. The method specifically comprises the following steps:
the shell of the section frame 1 corresponding to the desorption area is a double-layer shell 9, and heat-insulating materials 4 are filled in the double-layer shell 9. The fully-sealed heat-insulating layer can effectively prevent the heat-insulating material from entering water, reduce heat loss and greatly improve the heating speed and sensitivity of the desorption area.
The baffle 2 between the pre-storage bin 5 and the desorption zone, between the desorption zone and the cooling zone, and between the cooling zone and the discharging system 6 is a sealing plate, so that the overflow of gas is effectively avoided.
An anti-hollowing device 10 is arranged above the discharging system 6; the anti-empty-blowing device 10 is composed of one or more of a back blowing system, a vibration motor and a built-in activation bin.
The specific working process of the embodiment is as follows:
this single-row formula particle adsorbent removes bed high temperature regenerating unit's section bar frame 1 is inside to divide into the upper end through baffle 2 and is connected with pre-storage storehouse 5, the single-row formula material district that the lower extreme is connected with discharge system 6, and particle adsorbent 3 fills in the material layer between the baffle 2 after pouring into section bar frame 1 from top pre-storage storehouse 5. The cooling zone with baffle 2 in the desorption district is ventilative otter board, can make granular adsorbent 3 restrict in the material district, and gas can pass ventilative otter board simultaneously. The shell of the section frame 1 corresponding to the desorption area is a double-layer shell 9, and the heat-insulating material 4 is filled in the double-layer shell 9, so that the heat loss of the desorption area can be reduced. When the device is operated, air enters from a cold air inlet 12 to cool the granular adsorbent 3 in the cooling area and is discharged from a cold air outlet 13; the discharged gas is dedusted and heated, enters from a hot air inlet 14, desorbs the granular adsorbent 3 in the desorption area, and is discharged from a hot air outlet 15. The partition plates 2 between the pre-storage bin 5 and the desorption area, between the desorption area and the cooling area and between the cooling area and the discharging system 6 are sealing plates, so that gas is prevented from channeling among different working areas. The cooling area with set firmly block 17 that has the gas passage between separation section bar frame 1 and the baffle 2 in the desorption district, improved the wind flow direction in the device, avoid gas direct motion in the vertical direction, refer to the arrow mark in fig. 2 for the wind flow direction after improving to the contact condition of gas and interior granule adsorbent 3 of material district has been improved. After the desorption is finished, the discharging system 6 is opened, the granular adsorbent 3 in the cooling area is discharged through the material level meter 7, the granular adsorbent 3 in the desorption area enters the cooling area at the moment, and the granular adsorbent 3 in the pre-storage bin 5 enters the desorption area to finish the regeneration of the adsorbent for one time. The particulate adsorbent 3 in the top pre-storage bin 5 can be replenished for the next adsorbent regeneration by means of a level gauge 7. The cooling zone with the desorption district all is provided with a plurality of temperature sensor 8 and is used for the monitoring device temperature when operation. An anti-hollowing device 10 is arranged above the discharging system 6, and the anti-hollowing device 10 is started to shatter and destroy the bottom material area of the agglomerated plate.
Fig. 3 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A double-row granular adsorbent moving bed high-temperature regeneration apparatus according to an embodiment, which includesbase:Sub>A double-layered casing 9 filled with heat insulating materials 4,base:Sub>A sealing plate for preventing gas communication between different work zones, and an air-blowing prevention apparatus 10. In fig. 3, the level gauge 7, the temperature sensor 8 and the double-layered housing 9 are not shown. And the level gauge 7 and the temperature sensor 8 are used as the necessary structure of the device of the utility model, and the level gauge 7 and the temperature sensor 8 are naturally arranged in the embodiment. In fig. 3, the heat insulating material 4 is shown, and in the present embodiment, a double-walled casing 9 is naturally provided.
In this embodiment, the apparatus further includes a double-layered casing 9 filled with heat insulating material 4, a sealing plate for preventing gas communication between different work areas, and an anti-hollowing device 10. The material area of this device is double form. The method comprises the following specific steps:
the shell of the section frame 1 corresponding to the desorption area is a double-layer shell 9, and heat-insulating materials 4 are filled in the double-layer shell 9.
The partition plates 2 between the pre-storage bin 5 and the desorption area, between the desorption area and the cooling area, and between the cooling area and the discharging system 6 are sealing plates.
An anti-empty-drum device 10 is arranged above the discharging system 6; the anti-empty-blowing device 10 is composed of one or more of a back blowing system, a vibration motor and a built-in activation bin.
The specific working process of the embodiment is as follows:
this two formula particle adsorbent removes bed high temperature regenerating unit's section bar frame 1 is inside to divide into the upper end through baffle 2 and is connected with pre-storage storehouse 5, the two formula material districts that the lower extreme is connected with discharge system 6, and particle adsorbent 3 fills in the material layer between the baffle 2 after pouring into section bar frame 1 from top pre-storage storehouse 5. The cooling zone with baffle 2 in the desorption district is the ventilative otter board, can make granular adsorbent 3 restrict in the material district, and gas can pass through ventilative otter board simultaneously. The shell of the section frame 1 corresponding to the desorption area is a double-layer shell 9, and the heat-insulating material 4 is filled in the double-layer shell 9, so that the heat loss of the desorption area can be reduced. When the device is operated, air enters from a cold air inlet 12 to cool the granular adsorbent 3 in the cooling area and is discharged from a cold air outlet 13; the discharged gas is dedusted and heated, enters from a hot air inlet 14, desorbs the granular adsorbent 3 in the desorption area, and is discharged from a hot air outlet 15. The partition plates 2 between the pre-storage bin 5 and the desorption area, between the desorption area and the cooling area and between the cooling area and the discharging system 6 are sealing plates, so that gas is prevented from channeling among different working areas. After the desorption, open discharge system 6, unload the granular adsorbent 3 of cooling space through charge level indicator 7, the granular adsorbent 3 in desorption district gets into the cooling space this moment, and granular adsorbent 3 in the prestore storehouse 5 gets into the desorption district, accomplishes the regeneration of adsorbent once. The particulate adsorbent 3 in the top pre-storage bin 5 can be replenished for the next adsorbent regeneration by means of a level gauge 7. The cooling zone with the desorption district all is provided with a plurality of temperature sensor 8 and is used for the monitoring device temperature when operation. An anti-hollowing device 10 is arranged above the discharging system 6, and the anti-hollowing device 10 can be started to shatter and damage the bottom material area of the caking plate conglomerate.
Example 1
In a certain waste gas treatment project, 20t of granular activated carbon for xylene adsorption is used, the particle size of the granular activated carbon is 2-4 mm, and xylene is adsorbed by 1.2t after adsorption saturation.
The single-row type granular adsorbent moving bed high-temperature regeneration device with the treatment capacity of 200kg/h disclosed in the specific embodiment is selected for treatment. The thickness of the material area is 20cm, and the width of the material area is 100cm; the partition plates 2 between the pre-storage bin 5 and the desorption area, between the desorption area and the cooling area and between the cooling area and the discharging system 6 are sealing plates, and the material sealing height between the sealing plates is 40cm; the height of the block 17 is 40cm, and the heights of the desorption area and the cooling area are both 200cm; the partition plates 2 in the cooling zone and the desorption zone are ventilating screen plates, and the mesh number of the ventilating screen plates is 16 meshes; the thickness of the heat-insulating material 4 is 15cm.
The temperature is maintained at 300 ℃ during desorption, desorption gas is taken as hot air as the main material and proper amount of steam is added, and the desorption air volume is 3000m 3 H is used as the reference value. After the continuous operation for 100 hours, the granular activated carbon of the plant can be processed in batches, and the concentration of desorption gas is 3.8g/m 3 The desorption efficiency can stably reach more than 95 percent.
Example 2
In a certain waste gas treatment project, 40t of silica gel adsorbing 2t of toluene is adopted, and the particle size of the silica gel is 4-8mm.
The high-temperature regeneration device of the double-row type particle adsorbent moving bed with the treatment capacity of 500kg/h disclosed in the specific embodiment is selected for treatment. The thickness of each row of material area of the double-row material area is 50cm, and the width of the material area is 100cm; the partition plates 2 between the pre-storage bin 5 and the desorption area, between the desorption area and the cooling area and between the cooling area and the discharging system 6 are sealing plates, and the material seal height between the sealing plates is 100cm; the desorption area and the cooling area are 200cm in height; the partition plates 2 in the cooling zone and the desorption zone are ventilating net plates, and the mesh number of the ventilating net plates is 6 meshes; the thickness of the heat preservation and insulation material 4 is 10cm.
The temperature is maintained at 150 ℃ during desorption, desorption gas is taken as hot air as the main material and is supplemented with proper amount of steam, and the desorption air volume is 6000m 3 H is used as the reference value. The silica gel of the factory can be processed in batches by continuously running for 80 hours, and the concentration of desorption gasIs 4.0g/m 3 The desorption efficiency can stably reach more than 96 percent.
Example 3
In a certain waste gas treatment project, 20t of resin adsorbing 1t of dichloromethane is adopted, and the particle size of silica gel is 4-8mm.
The double-row type granular adsorbent moving bed high-temperature regeneration device with the treatment capacity of 200kg/h disclosed in the specific embodiment is selected for treatment. The thickness of each row of material area of the double-row material area is 20cm, and the width of the material area is 100cm; the partition plates 2 between the pre-storage bin 5 and the desorption zone, between the desorption zone and the cooling zone, and between the cooling zone and the discharging system 6 are sealing plates, and the material sealing height between the sealing plates is 100cm; the desorption area and the cooling area are both 100cm in height; the partition plates 2 in the cooling zone and the desorption zone are air-permeable net plates, and the mesh number of the air-permeable net plates is 6; the thickness of the heat preservation and insulation material 4 is 5cm.
The temperature is maintained at 100 ℃ during desorption, desorption gas is mainly hot air, and the desorption air volume is 3000m 3 H is the ratio of the total weight of the catalyst to the total weight of the catalyst. The silica gel of the factory can be processed in batches by continuously operating for 100h, and the concentration of desorption gas is 3.2g/m 3 The desorption efficiency can stably reach more than 96 percent.
Comparative example 1
The total volume of the common honeycomb activated carbon in a certain VOCs waste gas project is 40m 3 Are distributed in 16 carbon tanks integrating adsorption and desorption, and each carbon tank is 2.5m 3 And after the adsorption saturation, a single carbon tank adsorbs about 60kg of VOCs, and the thickness of the heat-insulating material outside the carbon tank is 10cm. Because of the limitation of the equipment condition and safe temperature, the desorption temperature can only be maintained at 80 ℃, the desorption gas is air, and the desorption air volume is 3000m 3 Cooling for 0.5-1 h when each tank is desorbed for 5h, and regenerating all honeycomb carbon after each tank is desorbed for about 96h one by one, wherein the desorbed gas concentration is 2.8g/m 3 The desorption efficiency is only about 70%.
Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the above description of the present invention, and such equivalents also fall within the scope of the appended claims.
Claims (9)
1. The utility model provides a granule adsorbent removes bed high temperature regenerating unit which characterized in that: comprises a profile frame (1); the interior of the section bar frame (1) is divided into a plurality of material areas, the upper ends of the material areas are connected with a pre-storage bin (5) for containing granular adsorbent, and the lower ends of the material areas are connected with a discharging system (6) through partition plates (2);
The section bar frame (1) is divided into a cooling area provided with a cold air inlet (12) and a cold air outlet (13) and a desorption area provided with a hot air inlet (14) and a hot air outlet (15) from bottom to top;
the partition plates (2) in the cooling zone and the desorption zone are ventilating screen plates;
the cold air outlet (13) is connected with the hot air inlet (14) through an external dust removal device, a fan and a heating device;
the cooling area and the desorption area are both provided with a plurality of temperature sensors (8);
the bottom of the pre-storage bin (5), the bottom of the cooling area and the bottom of the desorption area are provided with material level meters (7).
2. A granular adsorbent moving bed high-temperature regeneration device according to claim 1, characterized in that the outer shell of the section frame (1) corresponding to the desorption zone is a double-layer shell (9), and the inside of the double-layer shell (9) is filled with heat insulation material (4).
3. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: the horizontal thickness of the material area is less than 1000mm;
the partition plates (2) between the pre-storage bin (5) and the desorption area, between the desorption area and the cooling area, and between the cooling area and the discharging system (6) are sealing plates.
4. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: and block bodies (17) for blocking gas passages between the section bar frames (1) and the partition plates (2) are fixedly arranged in the cooling area and the desorption area.
5. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: the upper end in the pre-storage bin (5) is provided with a fire extinguishing system (11);
the fire extinguishing system (11) is a water spraying cooling fire extinguishing system;
when the real-time temperature of any one temperature sensor (8) in the device is more than or equal to the ignition point of the granular adsorbent (3), a fire extinguishing system (11) in the pre-storage bin (5) is started.
6. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: a steam thermal desorption auxiliary system (16) capable of injecting steam into the desorption area is arranged at the middle section of the desorption area;
and when the real-time temperature interval of the temperature sensor (8) in the desorption area is 150-250 ℃, the steam thermal desorption auxiliary system (16) is started.
7. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: the discharging control valve of the discharging system (6) is a temperature-resistant star-shaped discharging valve or an electric gate valve or a pneumatic gate valve.
8. A particulate adsorbent moving bed high temperature regeneration apparatus as defined in claim 1, wherein: an anti-empty-drum device (10) is arranged above the discharging system (6);
the anti-empty-blowing device (10) is composed of one or more of a back blowing system, a vibration motor and a built-in activation bin.
9. A particulate adsorbent moving bed high temperature regeneration apparatus as claimed in claim 1, wherein the material zone is single row or multiple rows according to actual use requirement.
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