CN108236938B - Comprehensive utilization method of regenerated carbon kiln tail gas - Google Patents
Comprehensive utilization method of regenerated carbon kiln tail gas Download PDFInfo
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- CN108236938B CN108236938B CN201810312526.1A CN201810312526A CN108236938B CN 108236938 B CN108236938 B CN 108236938B CN 201810312526 A CN201810312526 A CN 201810312526A CN 108236938 B CN108236938 B CN 108236938B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
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Abstract
The utility model relates to a method for comprehensively utilizing tail gas of a regenerated carbon kiln, which comprises a drying process and a carbonization and activation process of waste carbon, wherein the tail gas generated in the carbonization and activation process is directly returned to the waste carbon drying process for secondary utilization, the waste carbon is dried by utilizing heat in the tail gas, and meanwhile, the raw material waste carbon can also adsorb dust in the tail gas. Therefore, the utility model not only shortens the process flow of the activated carbon regeneration process and improves the production efficiency, but also reduces the equipment investment and the maintenance cost, saves the energy consumption and the tail gas treatment cost, is more energy-saving and more environment-friendly, and can particularly carry out more efficient comprehensive utilization on the tail gas of the regenerated carbon kiln.
Description
Technical Field
The utility model relates to the technical field of tail gas utilization of activated carbon regeneration kilns, in particular to a comprehensive utilization method of tail gas of a regenerated carbon kiln.
Background
According to incomplete statistics, after the activated carbon is saturated in adsorption, the renewable granular carbon accounts for seventy percent, and the regeneration treatment is carried out, so that the recycling of resources is satisfied, the resource loss is reduced, and a large amount of cost is saved for enterprises.
At present, there are various methods for regenerating activated carbon, for example: a thermal regeneration method, a biological regeneration method, a wet oxidation method, a solvent regeneration method, an electrochemical regeneration method, a catalytic wet oxidation method, and the like.
The heat regeneration method is the most widely used and industrially most mature activated carbon regeneration method. In the regeneration process of the activated carbon after the organic wastewater is treated, the activated carbon is generally divided into three stages of drying, high-temperature carbonization and activation according to the change of organic matters when the activated carbon is heated to different temperatures. Certain tail gas is generated after the waste carbon is carbonized and activated in a kiln. These off-gases are not only relatively high in temperature (typically 800-900 ℃) but also carry dust particles. In order to solve the problems of exhaust emission and utilization, the exhaust is usually introduced into a heat exchanger, the exhaust is cooled, hot water of the heat exchanger is used for washing, etc. of workers in a factory, and the cooled exhaust is then introduced into a bag-type dust collector for purification treatment.
The tail gas treatment method can recover and reuse the heat in the tail gas to a certain extent, and can also remove impurities such as dust in the tail gas, so as to avoid polluting the atmosphere. However, a part of heat energy loss is necessarily caused in the heat exchange link of the high-temperature tail gas, so that energy waste is caused. In addition, the production of the factory is continuously carried out, the high-temperature water quantity formed by the heat exchanger is large, the washing of workers in the factory is not used at all, and finally, the washing is wasted, so that the energy can not be saved in a real sense. In the process of circulating heat exchange of the heat exchanger, the temperature of the tail gas is gradually increased, so that the tail gas is not cooled in place easily, and the tail gas with higher temperature is introduced into the bag-type dust collector, so that the service life of the bag-type dust collector is influenced, spontaneous combustion of the bag-type dust collector is also easily caused, and accidents are caused.
Disclosure of Invention
Based on the defects of the prior art, the utility model aims to provide a method for comprehensively utilizing the tail gas of the regenerated carbon kiln, and the method for comprehensively utilizing the tail gas is designed by combining the production process characteristics of the regeneration of the activated carbon, the tail gas of the regenerated carbon kiln is directly introduced into waste carbon drying equipment, the waste carbon is dried by utilizing heat in the tail gas, and meanwhile, dust in the tail gas can be adsorbed by utilizing the waste carbon, so that the tail gas treatment cost is saved, and the method is more energy-saving and more environment-friendly.
The technical scheme of the utility model is as follows: the comprehensive utilization method of regenerated carbon kiln tail gas includes the steps of drying waste carbon and carbonizing and activating, and the tail gas produced in carbonizing and activating is returned to the waste carbon drying step for reuse, and the waste carbon is dried with heat from the tail gas and adsorbed with dust.
The utility model relates to a method for comprehensively utilizing tail gas of a regenerated carbon kiln, which comprises a waste carbon dryer, a screw conveyor, a burner, a pulverizer, cyclone separation equipment, a high Wen Liyao activation furnace and cyclone dust removal equipment, wherein the waste carbon dryer is used for feeding the pulverizer through the screw conveyor, the burner is connected with the pulverizer, combustion gas of the burner is supplied to the pulverizer for drying peat particles, the pulverizer is connected with the cyclone separation equipment through a peat conveying pipeline, peat particles separated by the cyclone separation equipment are sent to the high Wen Liyao activation furnace through the peat conveying pipeline, a tail gas outlet of the high-temperature vertical kiln activation furnace is connected to the cyclone dust removal equipment, high-temperature tail gas of the cyclone dust removal equipment is connected with the waste carbon dryer through the tail gas conveying pipeline, the high-temperature tail gas is directly returned to the raw material waste carbon dryer for secondary utilization, raw material waste carbon is dried by heat in the tail gas, and dust in the tail gas can be adsorbed.
Preferably, the combustor comprises a combustion chamber, a feeding mechanism is arranged on the upper side of the combustion chamber, the feeding mechanism comprises a feed bin, a blanking runner is arranged on a blanking pipe of the feed bin and driven by a variable frequency motor, and the rotating speed of the blanking runner can be adjusted in a variable frequency mode according to actual needs, so that the blanking quantity of fuel is adjusted; the air inlet is arranged at the lower part of one side of the combustion chamber, the air blower is arranged on the air inlet, the flame spraying nozzle is arranged at the upper part of the other side of the combustion chamber, the air distribution plate is arranged at the upper side of the air inlet of the combustion chamber, a plurality of air distribution holes are formed in the air distribution plate, an air regulating plate is arranged at the upper side of the air distribution plate, a plurality of air regulating holes are correspondingly formed in the air regulating plate, the air regulating plate is adjusted, the air distribution holes are staggered with the air regulating holes, and accordingly the ventilation quantity of the air distribution plate is adjusted, and an ash removing mechanism is arranged at the upper side of the air regulating plate.
Preferably, the ash removal mechanism comprises a scraper and a scraper driving mechanism. The scraper driving mechanism comprises pull rods, the inner end parts of the pull rods are connected to the two end parts of the scraper in the length direction, the outer end parts of the pull rods penetrate out of the combustion chamber, and connecting rods are arranged on the outer end parts of the two pull rods penetrating out of the combustion chamber. The connecting rod is pulled, and the connecting rod drives the pull rod and the scraper to make the scraper retrace and scrape on the upper surface of the air regulating plate, so that the scraped ash falls down through the air regulating holes and the air distributing holes to remove the ash deposited on the air regulating plate.
Preferably, the connecting rod is provided with a heat insulation sleeve.
Preferably, a pull rod guide block is arranged on the inner side wall of the combustion chamber, so that the pull rod can be stably pulled, the stability of the motion of the pull rod is improved, and the scraper can be ensured to be scraped tightly against the upper surface of the air regulating plate in the motion process.
Preferably, the connection between the scraper and the pull rod is adjustable, so as to adjust the installation position and angle of the scraper.
Preferably, an air adjusting plate adjusting mechanism is arranged at one end of the air adjusting plate. The air regulating plate adjusting mechanism comprises a nut seat arranged on the corresponding side part of the combustion chamber and an adjusting bolt penetrating through the nut seat, wherein the inner end part of the adjusting bolt is movably connected with a connecting seat on the air regulating plate, for example: and the empty sleeves are connected.
Preferably, a drawer-type ash collecting groove is arranged at the bottom of the inner cavity of the combustion chamber, and the ash collecting groove can be horizontally pulled out from the bottom of the combustion chamber so as to clean ash.
Preferably, the bottom of the combustion chamber is provided with casters for mobile use.
The utility model has the beneficial effects that: the utility model designs a method for comprehensively utilizing tail gas by combining the production process characteristics of activated carbon regeneration, namely, the tail gas of a regenerated carbon kiln is directly introduced into waste carbon drying equipment, and the waste carbon is dried by utilizing heat in the tail gas, so that the heat of the tail gas can be directly recycled in an activated carbon regeneration system, the energy loss is reduced, and the energy consumption of the activated carbon regeneration production is greatly reduced. Meanwhile, dust in the tail gas can be adsorbed by the waste carbon, so that the investment and maintenance cost of tail gas treatment equipment are saved. Therefore, the utility model not only shortens the process flow and reduces the equipment investment and maintenance cost, but also improves the production efficiency and saves the energy consumption.
According to the burner disclosed by the utility model, the feeding mechanism and the air distribution mechanism are improved, so that the feeding mechanism can realize the adjustment of the feeding speed of fuel, and the air distribution plate can realize the adjustment of the ventilation quantity, and the feeding mechanism and the air distribution plate are matched with each other, so that biomass particles are boiled in a combustion chamber and fully combusted, the generated heat has higher controllability, the fuel is saved, the problems of black smoke emission and the like of the traditional burner are solved, and the cleanliness of the regeneration of activated carbon is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for comprehensively utilizing tail gas of a regenerated carbon kiln in example 1.
FIG. 2 is a schematic view showing the connection of equipment in the method for comprehensively utilizing the tail gas of the regenerative charcoal kiln in example 2.
Fig. 3 is a schematic view of the structure of the burner in example 2.
Fig. 4 is an enlarged partial schematic view at a in fig. 3.
Fig. 5 is a schematic top view of the ash removing mechanism in embodiment 2.
In fig. 1: s1-drying procedure and S2-carbonization and activation procedure.
In fig. 2: 1-waste carbon dryer, 2-screw conveyor, 3-burner, 4-pulverizer, 5-cyclone separation device, 6-high temperature vertical kiln activation furnace, 7-cyclone dust removal device.
In fig. 3 to 5: the device comprises a 1-combustion chamber, a 2-storage bin, a 3-blanking rotating wheel, a 4-variable frequency motor, a 5-blower, a 6-flame nozzle, a 7-air distribution plate, an 8-air distribution plate, a 9-nut seat, a 10-adjusting bolt, an 11-connecting seat, a 12-scraper, a 13-pull rod, a 14-connecting rod, a 15-heat insulation sleeve, a 16-pull rod guide block, a 17-dust collecting groove and 18-casters.
Detailed Description
In order to describe the technical content, the constructional features, the achieved objects and effects of the present utility model in detail, the following description is made in connection with the embodiments and the accompanying drawings.
Example 1
As shown in fig. 1, the method for comprehensively utilizing the regenerated carbon kiln tail gas comprises a waste carbon drying process S1 and a carbonization and activation process S2, wherein the tail gas generated in the carbonization and activation process S2 directly flows back to the waste carbon drying process S1 for secondary utilization, the waste carbon is dried by utilizing heat in the tail gas, and meanwhile, dust in the tail gas can be adsorbed by the waste carbon.
Example 2
As shown in fig. 2, the method for comprehensively utilizing the tail gas of the regenerated carbon kiln comprises a waste carbon dryer 1, a screw conveyor 2, a combustor 3, a pulverizer 4, cyclone separation equipment 5, a high Wen Liyao activation furnace 6 and cyclone dust removal equipment 7.
The waste carbon dryer 1 feeds the pulverizer 4 through the screw conveyor 2.
The burner 3 is connected to the pulverizer 4, and the combustion gas of the burner is supplied to the pulverizer 4 for drying the pulverized peat particles.
The pulverizer 4 is connected with cyclone separation equipment 5 through a peat conveying pipeline, the cyclone separation equipment 5 separates dry peat particles and impurities, and the peat particles are sent into a high Wen Liyao activation furnace 6 through the peat conveying pipeline.
The exhaust outlet of the high-temperature vertical kiln activation furnace 6 is connected to a cyclone dust removing device 7.
The high-temperature tail gas of the cyclone dust removal equipment 7 is connected with the waste carbon dryer 1 through a tail gas conveying pipeline, the high-temperature tail gas is directly returned to the waste carbon dryer 1 for secondary utilization, heat in the high-temperature tail gas is utilized to dry the waste carbon, meanwhile, the waste carbon in the waste carbon dryer can also adsorb dust in the tail gas, and the investment and maintenance cost of tail gas treatment equipment are saved. Therefore, the utility model can more efficiently and comprehensively utilize the tail gas of the regenerated charcoal kiln.
As shown in fig. 3 to 5, the combustor is a biomass particle boiling type combustor, the combustor comprises a combustion chamber 1, a feeding mechanism is arranged on the upper side of the combustion chamber and comprises a feed bin 2, a blanking runner 3 is arranged on a blanking pipe of the feed bin 2, the blanking runner 3 is driven by a variable frequency motor 4, and the rotating speed of the blanking runner 3 can be adjusted in a variable frequency mode according to actual needs, so that the blanking amount of fuel is adjusted.
An air inlet is formed in the lower portion of one side of the combustion chamber 1, a blower 5 is mounted on the air inlet, and a flame nozzle 6 is arranged in the upper portion of the other side of the combustion chamber 1.
The air distribution plate 7 is arranged at the lower part in the inner cavity of the combustion chamber 1, the air distribution plate 7 is arranged at the upper side of an air inlet of the combustion chamber, a plurality of air distribution holes are formed in the air distribution plate 7, an air adjusting plate 8 is arranged at the upper side of the air distribution plate 7, a plurality of air adjustment holes are correspondingly formed in the air adjusting plate 8, and the air distribution holes and the air adjustment holes are staggered through adjusting the air adjusting plate, so that the ventilation quantity of the air distribution plate is adjusted.
An air adjusting plate adjusting mechanism is arranged at one end of the air adjusting plate 8. The air regulating plate adjusting mechanism comprises a nut seat 9 arranged on the corresponding side part of the combustion chamber and an adjusting bolt 10 penetrating through the nut seat 9, wherein the inner end part of the adjusting bolt 10 is movably connected with a connecting seat 11 on the air regulating plate 8.
The upper side of the air regulating plate 8 is provided with an ash removing mechanism which comprises a scraper 12 and a scraper driving mechanism. The scraper driving mechanism comprises a pull rod 13; the inner end part of the pull rod 13 is connected to the two end parts of the scraper 12 in the length direction, and the connection between the scraper 12 and the pull rod 13 is adjustable, so that the installation position and the angle of the scraper 12 can be adjusted; the outer ends of the pull rods 13 penetrate out of the combustion chamber, and connecting rods 14 are arranged on the outer ends of the two pull rods penetrating out of the combustion chamber, and heat insulation sleeves 15 are arranged on the connecting rods. Pulling the pull rod 13 can make the scraper 12 retrace on the upper surface of the air regulating plate 8, and the scraped ash falls down through the air regulating holes and the air distributing holes so as to remove the ash deposited on the air regulating plate 8. The pull rod guide block 16 is arranged on the inner side wall of the combustion chamber 1, so that the pull rod can be stably pulled, the stability of the movement of the pull rod is improved, and the scraper can be ensured to be scraped against the upper surface of the air regulating plate in the movement process.
The bottom of the inner cavity of the combustion chamber 1 is provided with a drawer type ash collecting groove 17, and the ash collecting groove 17 can be horizontally pulled out from the bottom of the combustion chamber 1 so as to clean ash.
The bottom of the combustion chamber 1 is provided with casters 18 for mobile use.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (7)
1. The comprehensive utilization method of the regenerated carbon kiln tail gas comprises a drying process and a carbonization and activation process of waste carbon, and is characterized in that: directly refluxing the tail gas generated in the carbonization and activation process to the waste carbon drying process for secondary utilization, drying the waste carbon by utilizing heat in the tail gas, and simultaneously, absorbing dust in the tail gas by the waste carbon;
the method comprises the steps of using a waste carbon dryer, a screw conveyor, a burner, a pulverizer, cyclone separation equipment, a high Wen Liyao activation furnace and cyclone dust removal equipment, wherein the waste carbon dryer is used for feeding the pulverizer through the screw conveyor, the burner is connected with the pulverizer, combustion gas of the burner is supplied to the pulverizer for drying peat particles, the pulverizer is connected with the cyclone separation equipment through a peat conveying pipeline, peat particles separated by the cyclone separation equipment are sent into the high Wen Liyao activation furnace through the peat conveying pipeline, a tail gas outlet of the high-temperature vertical kiln activation furnace is connected to the cyclone dust removal equipment, high-temperature tail gas of the cyclone dust removal equipment is connected with the waste carbon dryer through a tail gas conveying pipeline, the high-temperature tail gas is directly returned to the raw material waste carbon dryer for secondary utilization, raw material waste carbon is dried by utilizing heat in the tail gas, and meanwhile dust in the tail gas can be adsorbed;
the combustion machine comprises a combustion chamber, wherein a feeding mechanism is arranged on the upper side of the combustion chamber and comprises a feed bin, a blanking runner is arranged on a blanking pipe of the feed bin and driven by a variable frequency motor; an air inlet is formed in the lower portion of one side of the combustion chamber, a blower is mounted on the air inlet, and a flame nozzle is arranged in the upper portion of the other side of the combustion chamber; the middle lower part of the inner cavity of the combustion chamber is provided with an air distribution plate which is arranged on the upper side of the air inlet of the combustion chamber, and a plurality of air distribution holes are formed in the air distribution plate; the upper side of the air distribution plate is provided with a plurality of air regulating plates, air regulating holes are correspondingly formed in the air regulating plates, and the upper side of the air regulating plates is provided with an ash removing mechanism; the air regulating plate comprises a combustion chamber, and is characterized in that an air regulating plate adjusting mechanism is arranged at one end of the air regulating plate and comprises a nut seat arranged on the corresponding side part of the combustion chamber and an adjusting bolt penetrating through the nut seat, and the inner end of the adjusting bolt is movably connected with a connecting seat on the air regulating plate.
2. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 1, which is characterized in that: the ash removal mechanism comprises a scraper and a scraper driving mechanism, the scraper driving mechanism comprises pull rods, the inner end parts of the pull rods are connected to the two end parts of the scraper in the length direction, the outer end parts of the pull rods penetrate out of the combustion chamber, and connecting rods are arranged on the outer end parts of the two pull rods penetrating out of the combustion chamber.
3. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 2, which is characterized in that: and the connecting rod is provided with a heat insulation sleeve.
4. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 2, which is characterized in that: and a pull rod guide block is arranged on the inner side wall of the combustion chamber.
5. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 2, which is characterized in that: the scraper is connected with the pull rod in an adjustable mode so as to adjust the installation position and the angle of the scraper.
6. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 1, which is characterized in that: the bottom of the inner cavity of the combustion chamber is provided with a drawer type ash collecting groove.
7. The method for comprehensively utilizing the tail gas of the regenerated carbon kiln according to claim 1, which is characterized in that: the bottom of the combustion chamber is provided with casters for mobile use.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810312526.1A CN108236938B (en) | 2018-04-09 | 2018-04-09 | Comprehensive utilization method of regenerated carbon kiln tail gas |
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| CN201810312526.1A CN108236938B (en) | 2018-04-09 | 2018-04-09 | Comprehensive utilization method of regenerated carbon kiln tail gas |
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| CN108236938A CN108236938A (en) | 2018-07-03 |
| CN108236938B true CN108236938B (en) | 2024-04-02 |
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| WO2020019770A1 (en) * | 2018-07-23 | 2020-01-30 | 江苏远华轻化装备有限公司 | Adjustable air guide plate mechanism |
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| CN108826949B (en) * | 2018-07-23 | 2020-04-17 | 江苏远华轻化装备有限公司 | Adjustable air deflector mechanism |
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| CN109289819A (en) * | 2018-09-25 | 2019-02-01 | 浙江省林业科学研究院 | A kind of energy saving and environmental protection regeneration method and process of powdery waste activated carbon |
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| CN111686705B (en) * | 2020-07-17 | 2024-06-28 | 宁夏宜鑫环保科技有限公司 | Harmless dangerous waste carbon energy-saving activation regeneration system |
| CN111686706B (en) * | 2020-07-17 | 2024-07-02 | 宁夏宜鑫环保科技有限公司 | Negative pressure closed type energy-saving activation and regeneration system for dangerous waste carbon |
| CN113336191A (en) * | 2021-06-29 | 2021-09-03 | 成都达奇环境科技有限公司 | Method for treating activation furnace flue gas in biomass charcoal production and method for preparing hydrogen |
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| CN108236938A (en) | 2018-07-03 |
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