Activated carbon modification device for airflow circulation modification
Through the activated carbon modification device modified by the airflow circulation, the modified activated carbon material is circulated by oxygen-containing gas to oxidize the modified activated carbon material, and the problems of low purification performance and high modification cost in the prior art are solved, thereby achieving efficient and stable flue gas purification effect.
Patent Information
- Application Number
- CN202421112621.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The desulfurization and denitrification performance of existing flue gas purification carbon-based material products is not high and the stability is poor, resulting in high operating costs of activated carbon flue gas purification technology, low automation level of production equipment, lack of unified process equipment standards, affecting quality and production efficiency.
Design an activated carbon modification device for airflow circulation modification, and oxidize the modified activated carbon materials through a variety of oxygen-containing gases (such as air) to control the oxygen content in the modified gas within the range of 1-12%, so as to achieve uniformity and stability of the modification.
It improves the desulfurization and denitrification performance and stability of activated carbon materials, reduces the modification cost, enhances the uniformity and stability of the modification effect, and adapts to higher flue gas purification requirements.
Smart Images
Figure CN222778048U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the production and processing of activated carbon purification materials, in particular to an activated carbon modification device for airflow circulation modification, and belongs to the technical field of carbon-based purification material production and processing equipment. Background Art
[0002] With the rapid promotion of activated carbon flue gas purification technology, the market demand for flue gas purification carbon-based material products has grown rapidly, and the requirements for performance indicators have also been continuously improved. At present, the quality of flue gas purification carbon-based material products still has problems such as low desulfurization and denitrification performance and poor stability, which makes it difficult to adapt to higher flue gas purification requirements, and also directly leads to high operating costs of activated carbon flue gas purification technology; in addition, the current flue gas purification carbon-based material preparation industry technology is relatively backward, the level of automation of production equipment is low, large-scale equipment is rarely put into operation, and there is a lack of unified process equipment standards, which directly leads to low production efficiency and production capacity, and also leads to high production costs. The above problems will affect the quality assurance of carbon-based materials, which will in turn restrict the further development of activated carbon flue gas purification technology. In the existing technology, the desulfurization efficiency of carbon-based materials is usually improved by adjusting the raw material formula, but the improvement effect is limited. Due to the adjustment of the raw material formula, a better quality coal is required, which usually leads to increased costs. Utility Model Content
[0003] In view of the problems of low purification performance and high modification cost of activated carbon modified materials in the prior art, the utility model provides an activated carbon modification device with airflow circulation modification, which can use a variety of oxygen-containing gases (such as air) as modified gas circulation to oxidatively modify the activated carbon materials. The circulation of oxygen-containing gas makes the oxygen content in the modified gas within a better modification range, thereby achieving low-cost oxidation modification of activated carbon materials and improving the modification effect. In addition, the uniform convection design of the modified airflow and materials helps to improve the uniformity and stability of the modification.
[0004] In order to achieve the above technical objectives, the technical solutions adopted by the present utility model are as follows:
[0005] An activated carbon modification device with airflow circulation modification includes a modification tower, an air intake mechanism and a purification mechanism. A material inlet and a material outlet are respectively arranged at the top and bottom of the modification tower, and a modified airflow inlet and a modified airflow outlet are respectively arranged at the lower part and the upper part of the tower body of the modification tower. The exhaust end of the air intake mechanism is connected to the modified airflow inlet of the modification tower through a main air intake pipeline, the modified airflow outlet of the modification tower is connected to the air intake end of the purification mechanism through a main exhaust pipeline, and the exhaust end of the purification mechanism is connected to the air intake end of the air intake mechanism through an airflow circulation pipeline.
[0006] Preferably, a silo is provided above the material inlet at the top of the modifying tower, and a discharge conveyor is connected below the material outlet at the top of the modifying tower. Air lock discharge valves are provided at the material inlet at the top and the material outlet at the bottom of the modifying tower.
[0007] Preferably, the air intake mechanism includes a circulating air intake fan, a gas heater and a gas cooler. The air intake end of the circulating air intake fan is connected to the exhaust end of the gas cooler and the outside, the exhaust end of the circulating air intake fan is connected to the air intake end of the gas heater, the air intake end of the gas cooler is connected to the air intake end of the air circulation pipeline, and the exhaust end of the gas heater is connected to the air intake end of the main air intake pipeline.
[0008] Preferably, an oxygen content sensor, a first electric valve, a first temperature sensor, a wind speed sensor and a first explosion-proof valve are arranged on the main air intake pipe.
[0009] Preferably, a second temperature sensor, a second electric valve, a pressure sensor, an air relief valve and a second explosion-proof valve are provided on the main exhaust pipe.
[0010] Preferably, a third temperature sensor is provided on the air circulation duct.
[0011] Preferably, the purification mechanism is a dust collector.
[0012] Preferably, a plurality of modified airflow inlets and a plurality of modified airflow outlets are respectively arranged at the lower part and the upper part of the modified tower body. The plurality of modified airflow inlets and the plurality of modified airflow outlets are evenly distributed along the circumference of the modified tower body. All modified airflow inlets are connected to the main air intake duct, and all modified airflow outlets are connected to the main exhaust duct. Preferably, a grille baffle is arranged on each modified airflow inlet and each modified airflow outlet.
[0013] Preferably, a uniform speed feeder is provided in the inner cavity of the modification tower, and the uniform speed feeder comprises a horizontal sealing plate and a feeding round tube. The horizontal sealing plate is horizontally arranged in the inner cavity of the modification tower, and the four sides of the horizontal sealing plate are connected to the inner wall of the modification tower. A plurality of the feeding round tubes are installed on the horizontal sealing plate in a through-type manner and communicate with the upper chamber and the lower chamber of the horizontal sealing plate.
[0014] Preferably, the upper end of the feeding round tube passes through the horizontal sealing plate and is flush with the upper surface of the horizontal sealing plate, and the lower end of the feeding round tube passes through the horizontal sealing plate and extends downward to protrude into the lower chamber of the horizontal sealing plate. Preferably, the depth of the lower end of the feeding round tube protruding into the lower chamber of the horizontal sealing plate is 3 to 50 cm, preferably 5 to 35 cm, and more preferably 8 to 20 cm.
[0015] Preferably, the plurality of the feeding circular tubes are evenly distributed on the horizontal sealing plate so that the radial spacing between any two adjacent feeding circular tubes is consistent.
[0016] Preferably, the core of the cutting circular tube is taken as the center point of the horizontal sealing plate, and then six cutting circular tubes are arranged around the cutting circular tube in the center in a regular hexagonal distribution pattern, and then six cutting circular tubes of the same size are continuously arranged around each cutting circular tube in the regular hexagon in a regular hexagonal distribution pattern, and so on, gradually spreading outward until the horizontal sealing plate is covered with cutting circular tubes.
[0017] Preferably, a uniform feeder is provided at the upper part and the lower part of the inner cavity of the modification tower. The modified gas flow inlet is provided on the tower wall near the lower side of the uniform feeder at the lower part of the modification tower, and the modified gas flow outlet is provided on the tower wall near the lower side of the uniform feeder at the upper part of the modification tower.
[0018] Preferably, a water cooling jacket is provided on the tower wall of the modification tower below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket, and a cooling water outlet is provided at the upper part of the water cooling jacket.
[0019] Preferably, a plurality of material temperature sensors are arranged from top to bottom in the modification tower.
[0020] In the present utility model, studies have shown that the finished activated carbon activated material is introduced into an oxygen-containing gas under a high temperature environment (400-700°C) to fully react with the activated carbon material, which can greatly improve the performance of the activated carbon. In addition, studies have shown that in the process of high-temperature modification of activated carbon, the oxygen content of the modified gas should not be too high or too low. If the oxygen content is low, the degree of modification is low and the effect is poor, while too high an oxygen content is likely to lead to the risk of material combustion during the oxidation process. Therefore, it is generally necessary to control the oxygen content of the modified gas to be 1-12% (preferably 2-8%, more preferably 3-5%). In order to make the oxygen content in the activated flue gas within a preferred modification range, the present utility model realizes the oxidation modification of activated carbon through the mechanism of oxygen-containing gas circulation. Taking air as an example, fresh air is used as the modified gas (heating is required) in the early stage of modification. After the modification is completed, it is circulated and mixed with fresh air after dust removal and purification as the oxygen-containing gas for modification. That is to say, the present invention can circulate the oxygen-containing gas used for modification, thereby adjusting the oxygen content of the modified gas, so that the modification is within a better oxygen content range, thereby achieving low-cost and high-efficiency modification.
[0021] In the utility model, the modified gas contacts the material in a countercurrent manner, and the gas enters from the lower end of the modification tower, penetrates the material, and then flows out from the upper end. It should be noted that in actual production, the activation temperature of activated carbon is 900°C, and the temperature after cooling in the activation furnace is 500-600°C. The activated material needs to be cooled to 45-60°C by a cooler. Therefore, if the material entering the modification tower for oxidation modification is a high-temperature material from the outlet of the activation furnace (the material temperature is about 500°C), this temperature is just within the oxidation modification temperature range. Considering that the oxidation process has an exothermic reaction, in order to balance the temperature in the modification tower, the suitable temperature of the modified gas is 100-300°C; the activated flue gas temperature is just in this range and can be used directly as a modified gas (without heating). If cold air is used as the modified gas, it is also necessary to start the gas heater to heat it to ensure the modification effect.
[0022] Furthermore, when the material entering the modification tower for oxidation modification is a low-temperature material (material temperature is 50°C) that has been further cooled from the outlet of the activation furnace, the gas heater must be started to heat the modified gas. The heating device is an electric heating method, which exchanges heat with the gas in the pipeline, thereby raising the temperature of the circulating modified gas to about 200°C~300°C. In addition, due to the exothermic phenomenon in the oxidation modification process, the temperature in the modification tower can be maintained at 500°C, and the required temperature for modification can also be reached. In order to maintain the high temperature in the tower, the oxidation of cold materials requires a higher oxygen content in the oxidizing gas than the oxidation of hot materials (it can be flexibly adjusted according to actual industrial and mining conditions, such as adjusting the circulation volume of the circulating gas). In addition, an air supply port is provided on the circulating fan to supplement new air or activate flue gas (the main purpose is to supplement oxygen).
[0023] In the present invention, the continuous circulation process of the oxidized modified gas will increase the volume and cause a sharp increase in the pressure in the pipeline, which poses a risk of bursting the pipe. Therefore, a pressure sensor is provided on the modified gas outlet pipeline to monitor the pipeline pressure state in real time. By providing a relief valve next to it, the gas with a pressure higher than a certain value will be discharged from the relief valve, thereby reducing the pressure in the pipeline. In addition, the temperature of the circulating gas will increase due to the continuous heat release during the modification process. Therefore, a gas cooler (such as a shell-and-tube heat exchanger or a water-cooled jacket for indirect heat exchange) is provided to cool the circulating gas so that it is in a better temperature range before entering the modification tower.
[0024] In the utility model, in the modification tower, the oxygen-containing modification gas (such as air) flows from bottom to top and is in convection contact with the activated carbon material flowing from top to bottom, and the carbon-based material is oxidatively modified in a high temperature environment (such as 400-700°C) to increase the specific oxygen-containing functional groups on the surface of the carbon-based material, thereby improving its adsorption and purification performance. Furthermore, uniform material flow and uniform airflow in the modification tower are important links to ensure the modification effect. Uniform logistics and airflow are conducive to uniform modification, and can also prevent the occurrence of excessive temperature and spontaneous combustion due to uneven modification. Therefore, a uniform feeder is set to control the feeding speed of the descending carbon-based material to achieve uniform feeding, thereby effectively ensuring the uniformity of the material flow rate during the oxidation modification process, which is conducive to ensuring and promoting the stability and uniformity of the modification effect.
[0025] In the present utility model, in order to ensure the uniformity of the countercurrent contact between the modified gas and the material, it is necessary to ensure the uniformity and stability of the contact between the modified gas and the material. By opening a plurality of modified gas inlets in the circumferential direction of the lower part of the tower wall of the modified tower and a plurality of modified gas outlets in the circumferential direction of the upper part of the tower wall of the modified tower, the modified gas is simultaneously blown into the interior of the modified tower and then flows upward from different areas, thereby ensuring the uniformity of the airflow in each area of the modified tower, so that the gas flowing from bottom to top can be in uniform contact with the descending material, thereby ensuring the modification effect. Furthermore, by providing an air intake grille on each modified gas inlet and an exhaust grille on each modified gas outlet, it is ensured that the entry and discharge of the modified gas will not be blocked by the material, and at the same time, it can also prevent the flow of beneficial large particles.
[0026] In the present invention, in order to further improve the uniformity and stability of the contact between the modified airflow and the material, a uniform feeder is provided inside the modification tower, thereby improving the uniformity of the material descending in the modification device. In the preferred embodiment of the present invention, uniform feeders are provided at both the upper and lower parts of the modification tower cavity (with the oxidation modification zone between them). This is to achieve uniformity of the downward movement of the feed and the discharge, thereby ensuring uniformity of the overall downward movement of the material.
[0027] In the utility model, the uniform speed feeder includes a horizontal sealing plate and a feeding circular tube, and the feeding circular tubes are evenly distributed on the horizontal sealing plate, specifically: a feeding circular tube is provided through the center of the horizontal sealing plate, which is called the central feeding circular tube, and multiple layers of feeding circular tubes are arranged in a regular hexagonal arrangement around the outer side of the central feeding circular tube (that is, the centers of all feeding circular tubes in the same circle are connected in sequence to form a regular hexagon, the closer to the outside, the larger the regular hexagon, and the spacing between any two adjacent layers of regular hexagons is the same) until it spreads throughout the entire horizontal sealing plate, that is, the radial spacing between any two adjacent feeding circular tubes is equal. The design of the multi-layer uniform speed feeder with a special structural design realizes the uniform downward movement of the activated carbon material in the oxidation modification area, which is conducive to promoting the uniformity of the modification effect.
[0028] In the present invention, in order to make the modified gas evenly distributed, the modified gas inlet (or outlet) is designed to be symmetrically arranged on at least two opposite side walls of the modification tower, or evenly distributed around the outer wall of the entire modification tower. The main air intake pipe (or main exhaust pipe) is connected to the modified gas inlet (or outlet) through a plurality of air flow branches, and is provided with a high temperature gasket, which is fixed to the side wall by bolts. In addition, the lower end of the feeding circular tube extends downward from the horizontal sealing plate to a certain length (such as 3-50cm). After the material flows out from the bottom of the feeding circular tube, an empty area will be formed between the outlet of the feeding circular tube and the horizontal sealing plate, which is conducive to the formation of an air chamber. The modified gas enters the oxidation modification zone upward from the air chamber on the lower side of the bottom material mixing plate through the feeding circular tube there, and penetrates the material layer, and then converges in the air chamber on the lower side of the top horizontal sealing plate, and then flows out through the feeding circular tube there and the modified gas flow outlet, which is conducive to the modified gas to flow in from all the feeding circular tubes of the bottom horizontal sealing plate, and then be evenly distributed in the oxidation zone, so as to improve the uniformity of the contact between the modified gas and the activated carbon material.
[0029] In the utility model, a plurality of temperature sensor interfaces are provided on the modification tower, and material temperature sensors of different lengths can be installed to track the temperature changes in different areas of the oxidation zone. If there is a sharp increase in local temperature, corresponding measures can be taken to solve it. In addition, a water cooling jacket is provided on the outside of the bottom side wall of the modification tower, and the modified material is quickly cooled by circulating cooling water.
[0030] Compared with the prior art, the beneficial technical effects of the utility model are as follows:
[0031] 1: The activated carbon modification device with airflow circulation modification of the utility model realizes low-cost and high-efficiency modification of activated carbon materials through the circulation of modified gas; further, the uniform convection design of modified airflow and material helps to improve the uniformity and stability of modification.
[0032] 2: The utility model greatly improves the uniformity of the contact between the modified gas flow and the material by arranging a symmetrical modified gas inlet and outlet mechanism outside the modified tower and arranging a uniform speed feeder in its inner cavity, which is beneficial to improving the uniformity and stability of the modification.
[0033] 3: The device of the utility model also has the characteristics of simple structure, easy operation, low equipment investment cost, simple maintenance, good oxidation modification effect, stable modification effect, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] Figure 1 The utility model is a schematic diagram of the overall structure of the activated carbon modification device with airflow circulation modification.
[0035] Figure 2 This is a top view distribution structure diagram of the exhaust mechanism of the utility model (the distribution of the intake mechanism is similar to it).
[0036] Figure 3 It is a schematic diagram of the distribution of the blanking round tubes on the horizontal sealing plate of the utility model.
[0037] Figure markings: 1: modification tower; 101: silo; 102: unloading conveyor; 103: air lock discharge valve; 104: uniform speed feeder; 1041: horizontal sealing plate; 1042: feed tube; 105: material temperature sensor; 2: air intake mechanism; 201: circulating air intake fan; 202: gas heater; 203: gas cooler; 3: purification mechanism; 4: main air intake pipe; 401: oxygen content sensor; 402: first electric valve; 403: first temperature sensor; 404: wind speed sensor; 405: first explosion-proof valve; 5: main exhaust pipe; 501: second temperature sensor; 502: second electric valve; 503: pressure sensor; 504: air relief valve; 505: second explosion-proof valve; 6: air circulation pipe; 601: third temperature sensor; 7: water-cooling jacket. DETAILED DESCRIPTION
[0038] The technical solution of the utility model is illustrated below, and the scope of protection requested for the utility model includes but is not limited to the following embodiments.
[0039] An activated carbon modification device with airflow circulation modification, the device comprises a modification tower 1, an air intake mechanism 2 and a purification mechanism 3. A material inlet and a material outlet are respectively arranged at the top and bottom of the modification tower 1, and a modified airflow inlet and a modified airflow outlet are respectively arranged at the lower part and the upper part of the tower body of the modification tower 1. The exhaust end of the air intake mechanism 2 is connected to the modified airflow inlet of the modification tower 1 through a main air intake pipe 4, the modified airflow outlet of the modification tower 1 is connected to the air intake end of the purification mechanism 3 through a main exhaust pipe 5, and the exhaust end of the purification mechanism 3 is connected to the air intake end of the air intake mechanism 2 through an airflow circulation pipe 6.
[0040] Preferably, a silo 101 is provided above the material inlet at the top of the modifying tower 1, and a discharge conveyor 102 is connected below the material outlet at the top of the modifying tower 1. Air lock discharge valves 103 are provided at both the material inlet at the top and the material outlet at the bottom of the modifying tower 1.
[0041] Preferably, the air intake mechanism 2 includes a circulating air intake fan 201, a gas heater 202, and a gas cooler 203. The air intake end of the circulating air intake fan 201 is connected to the exhaust end of the gas cooler 203 and the outside, the exhaust end of the circulating air intake fan 201 is connected to the air intake end of the gas heater 202, the air intake end of the gas cooler 203 is connected to the air intake end of the air circulation pipeline 6, and the exhaust end of the gas heater 202 is connected to the air intake end of the main air intake pipeline 4.
[0042] Preferably, an oxygen content sensor 401 , a first electric valve 402 , a first temperature sensor 403 , a wind speed sensor 404 and a first explosion-proof valve 405 are provided on the main air intake pipe 4 .
[0043] Preferably, a second temperature sensor 501 , a second electric valve 502 , a pressure sensor 503 , an air release valve 504 and a second explosion-proof valve 505 are provided on the main exhaust pipe 5 .
[0044] Preferably, a third temperature sensor 601 is provided on the airflow circulation duct 6 .
[0045] Preferably, the purification mechanism 3 is a dust collector.
[0046] Preferably, a plurality of modified air flow inlets and a plurality of modified air flow outlets are respectively arranged at the lower part and the upper part of the tower body of the modifying tower 1. The plurality of modified air flow inlets and the plurality of modified air flow outlets are evenly distributed along the circumference of the tower body of the modifying tower 1. All modified air flow inlets are connected to the main air intake duct 4, and all modified air flow outlets are connected to the main exhaust duct 5. Preferably, a grille baffle is arranged on each modified air flow inlet and each modified air flow outlet.
[0047] Preferably, a uniform speed feeder 104 is provided in the inner cavity of the modification tower 1, and the uniform speed feeder 104 comprises a horizontal sealing plate 1041 and a feeding circular tube 1042. The horizontal sealing plate 1041 is horizontally arranged in the inner cavity of the modification tower 1, and the four sides of the horizontal sealing plate 1041 are connected to the inner wall of the modification tower 1. A plurality of the feeding circular tubes 1042 are installed in a through-type manner on the horizontal sealing plate 1041 and communicate with the upper chamber and the lower chamber of the horizontal sealing plate 1041.
[0048] Preferably, the upper end of the feeding round tube 1042 penetrates the horizontal sealing plate 1041 and is flush with the upper surface of the horizontal sealing plate 1041, and the lower end of the feeding round tube 1042 penetrates the horizontal sealing plate 1041 and extends downward to protrude into the lower chamber of the horizontal sealing plate 1041. Preferably, the depth of the lower end of the feeding round tube 1042 protruding into the lower chamber of the horizontal sealing plate 1041 is 3 to 50 cm, preferably 5 to 35 cm, and more preferably 8 to 20 cm.
[0049] Preferably, the plurality of the discharge circular tubes 1042 are evenly distributed on the horizontal sealing plate 1041 so that the radial spacing between any two adjacent discharge circular tubes 1042 is consistent.
[0050] Preferably, the core of the blanking circular tube 1042 is taken as the center point of the horizontal sealing plate 1041, and then six blanking circular tubes 1042 are arranged around the blanking circular tube 1042 in the center in a regular hexagonal distribution manner, and then six blanking circular tubes 1042 of the same size are continuously arranged around each blanking circular tube 1042 in the regular hexagon in a regular hexagonal distribution manner, and so on, gradually spreading outward until the horizontal sealing plate 1041 is covered with blanking circular tubes 1042.
[0051] Preferably, a uniform feeder 104 is provided at both the upper and lower parts of the inner cavity of the modification tower 1. The modified gas flow inlet is provided on the tower wall near the lower side of the uniform feeder 104 at the lower part of the modification tower 1, and the modified gas flow outlet is provided on the tower wall near the lower side of the uniform feeder 104 at the upper part of the modification tower 1.
[0052] Preferably, a water cooling jacket 7 is provided on the tower wall of the modification tower 1 below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket 7, and a cooling water outlet is provided at the upper part of the water cooling jacket 7.
[0053] Preferably, a plurality of material temperature sensors 105 are arranged in the modification tower 1 from top to bottom. Example 1
[0054] like Figure 1-3 As shown, an activated carbon modification device with airflow circulation modification includes a modification tower 1, an air intake mechanism 2 and a purification mechanism 3. A material inlet and a material outlet are respectively arranged at the top and bottom of the modification tower 1, and a modified airflow inlet and a modified airflow outlet are respectively arranged at the lower part and the upper part of the tower body of the modification tower 1. The exhaust end of the air intake mechanism 2 is connected to the modified airflow inlet of the modification tower 1 through the main air intake pipe 4, the modified airflow outlet of the modification tower 1 is connected to the air intake end of the purification mechanism 3 through the main exhaust pipe 5, and the exhaust end of the purification mechanism 3 is connected to the air intake end of the air intake mechanism 2 through the airflow circulation pipe 6. Example 2
[0055] Example 1 is repeated, except that a silo 101 is provided above the material inlet at the top of the modifying tower 1, and a discharge conveyor 102 is connected below the material outlet at the top of the modifying tower 1. Air lock discharge valves 103 are provided at both the material inlet at the top and the material outlet at the bottom of the modifying tower 1. Example 3
[0056] The embodiment 2 is repeated, except that the air intake mechanism 2 includes a circulating air intake fan 201, a gas heater 202, and a gas cooler 203. The air intake end of the circulating air intake fan 201 is connected to the exhaust end of the gas cooler 203 and the outside, the exhaust end of the circulating air intake fan 201 is connected to the air intake end of the gas heater 202, the air intake end of the gas cooler 203 is connected to the air intake end of the air circulation pipeline 6, and the exhaust end of the gas heater 202 is connected to the air intake end of the main air intake pipeline 4. Example 4
[0057] The third embodiment is repeated, except that an oxygen content sensor 401 , a first electric valve 402 , a first temperature sensor 403 , a wind speed sensor 404 and a first explosion-proof valve 405 are provided on the main air intake pipe 4 . Example 5
[0058] The fourth embodiment is repeated, except that a second temperature sensor 501 , a second electric valve 502 , a pressure sensor 503 , a vent valve 504 and a second explosion-proof valve 505 are provided on the main exhaust pipe 5 . Example 6
[0059] Example 5 is repeated, except that a third temperature sensor 601 is provided on the air circulation duct 6 . Example 7
[0060] Example 6 is repeated, except that the purification mechanism 3 is a dust collector. Example 8
[0061] Example 7 is repeated, except that a plurality of modified air flow inlets and a plurality of modified air flow outlets are respectively provided at the lower part and the upper part of the tower body of the modified tower 1. The plurality of modified air flow inlets and the plurality of modified air flow outlets are evenly distributed along the circumference of the tower body of the modified tower 1. All the modified air flow inlets are connected to the main air intake duct 4, and all the modified air flow outlets are connected to the main exhaust duct 5. A grille baffle is provided on each modified air flow inlet and each modified air flow outlet. Example 9
[0062] Example 8 is repeated, except that a uniform speed feeder 104 is provided in the inner cavity of the modification tower 1, and the uniform speed feeder 104 comprises a horizontal sealing plate 1041 and a feeding circular tube 1042. The horizontal sealing plate 1041 is horizontally provided in the inner cavity of the modification tower 1, and the four sides of the horizontal sealing plate 1041 are connected to the inner wall of the modification tower 1. A plurality of the feeding circular tubes 1042 are installed on the horizontal sealing plate 1041 in a through-type manner and communicate the upper chamber and the lower chamber of the horizontal sealing plate 1041. Example 10
[0063] Repeat Example 9, except that the upper end of the blanking circular tube 1042 passes through the horizontal sealing plate 1041 and is flush with the upper surface of the horizontal sealing plate 1041, and the lower end of the blanking circular tube 1042 passes through the horizontal sealing plate 1041 and extends downward to protrude into the lower chamber of the horizontal sealing plate 1041. Embodiment 11
[0064] Example 10 is repeated, except that the lower end of the discharge circular tube 1042 protrudes into the lower chamber of the horizontal sealing plate 1041 to a depth of 10 cm. Example 12
[0065] Example 11 was repeated, except that the lower end of the discharge tube 1042 protruded into the lower chamber of the horizontal sealing plate 1041 to a depth of 12 cm. Example 13
[0066] Example 12 is repeated, except that a plurality of the feed round tubes 1042 are evenly distributed on the horizontal sealing plate 1041 so that the radial spacing between any two adjacent feed round tubes 1042 is consistent. Embodiment 14
[0067] Repeat Example 13, except that the core of the cutting circular tube 1042 is taken as the center point of the horizontal sealing plate 1041, and then six cutting circular tubes 1042 are arranged around the central cutting circular tube 1042 in a regular hexagonal distribution pattern, and then six cutting circular tubes 1042 of the same size are continuously arranged around each cutting circular tube 1042 in the regular hexagon in a regular hexagonal distribution pattern, and so on, gradually spreading outward until the horizontal sealing plate 1041 is covered with cutting circular tubes 1042. Embodiment 15
[0068] Example 14 was repeated, except that a uniform feeder 104 was provided at both the upper and lower parts of the inner cavity of the modification tower 1. The modified gas flow inlet was opened on the tower wall near the lower side of the uniform feeder 104 at the lower part of the modification tower 1, and the modified gas flow outlet was opened on the tower wall near the lower side of the uniform feeder 104 at the upper part of the modification tower 1. Example 16
[0069] Example 15 is repeated, except that a water cooling jacket 7 is further provided on the tower wall of the modification tower 1 below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket 7, and a cooling water outlet is provided at the upper part of the water cooling jacket 7. Embodiment 17
[0070] Example 16 is repeated, except that a plurality of material temperature sensors 105 are arranged from top to bottom in the modification tower 1.
Claims
1. An activated carbon modification device with airflow circulation modification, characterized in that: The device comprises a modification tower (1), an air intake mechanism (2) and a purification mechanism (3); a material inlet and a material outlet are respectively arranged at the top and bottom of the modification tower (1); a modified air flow inlet and a modified air flow outlet are respectively arranged at the lower part and the upper part of the tower body of the modification tower (1); an exhaust end of the air intake mechanism (2) is connected to the modified air flow inlet of the modification tower (1) through a main air intake pipeline (4); the modified air flow outlet of the modification tower (1) is connected to the air intake end of the purification mechanism (3) through a main exhaust pipeline (5); and the exhaust end of the purification mechanism (3) is connected to the air intake end of the air intake mechanism (2) through an air flow circulation pipeline (6).
2. The device according to claim 1, characterized in that: A silo (101) is arranged above the material inlet at the top of the modification tower (1), and a discharge conveyor (102) is connected below the material outlet at the top of the modification tower (1); and air-locking discharge valves (103) are arranged at both the material inlet at the top and the material outlet at the bottom of the modification tower (1).
3. The device according to claim 1, characterized in that: The air intake mechanism (2) comprises a circulating air intake fan (201), a gas heater (202) and a gas cooler (203); the air intake end of the circulating air intake fan (201) is connected to the exhaust end of the gas cooler (203) and the outside, the exhaust end of the circulating air intake fan (201) is connected to the air intake end of the gas heater (202), the air intake end of the gas cooler (203) is connected to the air intake end of the air circulation pipeline (6), and the exhaust end of the gas heater (202) is connected to the air intake end of the main air intake pipeline (4).
4. The device according to claim 1, characterized in that: An oxygen content sensor (401), a first electric valve (402), a first temperature sensor (403), a wind speed sensor (404) and a first explosion-proof valve (405) are arranged in the main air intake pipe (4); and / or A second temperature sensor (501), a second electric valve (502), a pressure sensor (503), a gas relief valve (504) and a second explosion-proof valve (505) are arranged on the main exhaust pipe (5); and / or A third temperature sensor (601) is provided on the air circulation duct (6).
5. The device according to claim 1, characterized in that: The purification mechanism (3) is a dust collector.
6. The device according to any one of claims 1 to 5, characterized in that: A plurality of modified air flow inlets and a plurality of modified air flow outlets are respectively arranged at the lower part and the upper part of the tower body of the modification tower (1); the plurality of modified air flow inlets and the plurality of modified air flow outlets are evenly distributed along the circumference of the tower body of the modification tower (1); all the modified air flow inlets are connected to the main air intake duct (4), and all the modified air flow outlets are connected to the main exhaust duct (5).
7. The device according to claim 6, characterized in that: A grille baffle is arranged on each modified air flow inlet and each modified air flow outlet.
8. The device according to any one of claims 1 to 5 and 7, characterized in that: A uniform speed feeder (104) is arranged in the inner cavity of the modification tower (1), and the uniform speed feeder (104) comprises a horizontal sealing plate (1041) and a feeding circular tube (1042); the horizontal sealing plate (1041) is arranged horizontally in the inner cavity of the modification tower (1), and the four sides of the horizontal sealing plate (1041) are connected to the inner wall of the modification tower (1); a plurality of the feeding circular tubes (1042) are installed in a through-type manner on the horizontal sealing plate (1041) and communicate with the upper chamber and the lower chamber of the horizontal sealing plate (1041).
9. The device according to claim 8, characterized in that: The upper end of the material discharge circular tube (1042) passes through the horizontal sealing plate (1041) and is flush with the upper surface of the horizontal sealing plate (1041), and the lower end of the material discharge circular tube (1042) passes through the horizontal sealing plate (1041) and extends downward to protrude into the lower side chamber of the horizontal sealing plate (1041).
10. The device according to claim 9, characterized in that: The lower end of the feeding circular tube (1042) protrudes into the lower chamber of the horizontal sealing plate (1041) to a depth of 3 to 50 cm.
11. The device according to claim 10, characterized in that: The lower end of the feeding circular tube (1042) protrudes into the lower chamber of the horizontal sealing plate (1041) to a depth of 5 to 35 cm.
12. The device according to claim 11, characterized in that: The lower end of the feeding circular tube (1042) protrudes into the lower chamber of the horizontal sealing plate (1041) to a depth of 8 to 20 cm.
13. The device according to claim 8, characterized in that: The plurality of feeding circular tubes (1042) are evenly distributed on the horizontal sealing plate (1041) so that the radial spacing between any two adjacent feeding circular tubes (1042) is consistent.
14. The device according to claim 13, characterized in that: The core of the blanking circular tube (1042) is located at the center point of the horizontal sealing plate (1041), and then six blanking circular tubes (1042) are arranged around the blanking circular tube (1042) in a regular hexagonal distribution manner, and then six blanking circular tubes (1042) of the same size are continuously arranged around each blanking circular tube (1042) in the regular hexagon in a regular hexagonal distribution manner, and so on, gradually spreading outward until the horizontal sealing plate (1041) is covered with blanking circular tubes (1042).
15. The device according to claim 8, characterized in that: A uniform speed feeder (104) is provided at the upper part and the lower part of the inner cavity of the modification tower (1); a modified air flow inlet is provided on the tower wall near the lower side of the uniform speed feeder (104) at the lower part of the modification tower (1), and a modified air flow outlet is provided on the tower wall near the lower side of the uniform speed feeder (104) at the upper part of the modification tower (1).
16. The device according to any one of claims 1-5, 7, 9-15, characterized in that: A water cooling jacket (7) is further provided on the tower wall of the modification tower (1) below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket (7), and a cooling water outlet is provided at the upper part of the water cooling jacket (7); and / or A plurality of material temperature sensors (105) are arranged from top to bottom in the modification tower (1).
17. The device according to claim 6, characterized in that: A water cooling jacket (7) is further provided on the tower wall of the modification tower (1) below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket (7), and a cooling water outlet is provided at the upper part of the water cooling jacket (7); and / or A plurality of material temperature sensors (105) are arranged from top to bottom in the modification tower (1).
18. The device according to claim 8, characterized in that: A water cooling jacket (7) is further provided on the tower wall of the modification tower (1) below the modified gas flow inlet, a cooling water inlet is provided at the lower part of the water cooling jacket (7), and a cooling water outlet is provided at the upper part of the water cooling jacket (7); and / or A plurality of material temperature sensors (105) are arranged from top to bottom in the modification tower (1).