Modified activated carbon production system
By adding a modification device in the activated carbon production system, the activated flue gas circulation is used as a modification medium, and the activated carbon is oxidized and modified, which solves the problems of low desulfurization and denitrification performance and poor stability in flue gas purification, and achieves low-cost treatment of activated flue gas and efficient utilization of waste heat.
Patent Information
- Application Number
- CN202421112689.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing activated carbon materials have low desulfurization and denitrification performance in flue gas purification, poor stability, and high cost of activated flue gas treatment, and waste heat is not effectively utilized.
By adding a modification device after the activated carbon carbonization and activation device, the activated flue gas is circulated as a modification medium, the activated activated carbon is oxidized and modified, the purification performance is improved, and the efficient utilization of waste heat is achieved.
The purification performance of activated carbon materials is improved, the cost of activated flue gas treatment is reduced, the efficient utilization of waste heat is achieved, and the energy consumption of oxidation modification treatment is reduced.
Smart Images
Figure CN222861159U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the production and processing of activated carbon purification materials, in particular to a modified activated carbon production system, and belongs to the technical field of carbon-based purification material production and processing equipment. Background Art
[0002] With the increasing requirements of environmental protection in my country, more and more types of air pollutants are being controlled, and emission standards are becoming more stringent, and the demand for multi-pollutant treatment of industrial flue gas is becoming more urgent. The activated carbon flue gas purification technology with activated carbon materials as the core has been rapidly applied and promoted due to its advantages of high pollutant removal efficiency, no secondary pollution, simple operation, low operating cost, and resource-based by-products. 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 the problems of 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 activated carbon material preparation industry technology is relatively backward, the level of automated operation 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 activated carbon materials, which will in turn restrict the further development of activated carbon flue gas purification technology. In the prior art, the desulfurization efficiency of activated carbon materials is usually improved by adjusting the raw material formula, but the improvement effect is limited because adjusting the raw material formula requires better quality coal, which usually easily leads to increased costs.
[0003] In addition, in the prior art, the flue gas generated when the activated carbon is activated generally has a temperature of 200 to 300°C. This part of the flue gas needs to be purified and cooled separately before it can be discharged, which will increase the disposal cost and cause problems such as environmental thermal pollution due to insufficient utilization of waste heat. Utility Model Content
[0004] In view of the problems in the prior art such as low desulfurization and denitrification performance and poor stability of existing activated carbon materials, high cost of activated flue gas treatment and ineffective utilization of waste heat, the utility model provides a modified activated carbon production system, which circulates activated flue gas with a certain temperature and oxygen content as a modification medium for an activated carbon modification device after activation, thereby improving the purification performance of the activated carbon while achieving low-cost treatment of the activated flue gas and efficient utilization of waste heat.
[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present utility model are as follows:
[0006] A modified activated carbon production system, the system includes a carbonization device, an activation device and a modification device. According to the direction of the material, the carbonization device, the activation device and the modification device are connected in series in sequence. The feed port of the carbonization device is connected to the activated carbon raw material conveying mechanism. The discharge port of the modification device is connected to the finished product conveying mechanism. A modified medium inlet is provided at one end close to the discharge port of the modification device, and a modified medium outlet is provided at one end close to the feed port of the modification device. The smoke outlet of the activation device is connected to the modified medium inlet of the modification device through a smoke conveying pipeline.
[0007] Preferably, the carbonization device comprises a drying section, a preheating section and a carbonization section which are connected in series in sequence. The steam outlet of the drying section of the carbonization device is connected to the modifying medium inlet of the modifying device through a steam delivery pipeline.
[0008] Preferably, the modification device comprises a feed bin and a modification tower. The feed bin is arranged on the top feed port of the modification tower. The bottom discharge port of the modification tower is connected to the finished product conveying mechanism. The modification medium inlet and the modification medium outlet are respectively arranged on the lower part and the upper part of the tower wall of the modification tower. Preferably, an air lock discharge valve is arranged on both the top feed port and the bottom discharge port of the modification tower.
[0009] Preferably, the system further comprises a modified medium blowing mechanism, which comprises a fan and an air intake pipe. The air intake end of the fan is connected to the smoke delivery pipe and the steam delivery pipe, and the exhaust end thereof is connected to the modified medium inlet at the lower part of the wall of the modifying tower through the air intake pipe. Preferably, the air intake pipe is covered with an insulation jacket.
[0010] Preferably, according to the direction of the airflow, the smoke delivery pipeline and the steam delivery pipeline are respectively connected to the upstream section and the downstream section of the fan air inlet end pipeline, and a first temperature detector and a first oxygen content detector are arranged on the midstream section of the fan air inlet end pipeline located between the smoke delivery pipeline and the steam delivery pipeline. A second temperature detector, a second oxygen content detector, a first electric valve, a wind speed detector and a first explosion-proof valve are arranged on the air inlet main pipe.
[0011] Preferably, a plurality of modifying medium inlets are provided in the circumferential direction of the lower part of the modifying tower wall, and the exhaust end of the air intake main pipe surrounds the lower part of the modifying tower wall and is connected to the plurality of modifying medium inlets at the same time. Preferably, an air intake grille is provided on each modifying medium inlet.
[0012] Preferably, the system further comprises a modified medium purification mechanism, which comprises an exhaust pipe and a dust collector. The air inlet of the dust collector is connected to the modified medium outlet at the upper part of the tower wall of the modifying tower through the exhaust pipe. A third temperature detector, a second electric valve, a pressure detector and a second explosion-proof valve are arranged on the exhaust pipe.
[0013] Preferably, a plurality of modified medium outlets are provided in the circumferential direction of the upper part of the modified tower wall, and the air inlet end of the exhaust main pipe surrounds the upper part of the modified tower wall and is connected to the plurality of modified medium outlets at the same time. Preferably, an exhaust grille is provided on each modified medium outlet.
[0014] Preferably, a material leveling plate is provided inside the modification tower, and a plurality of feed tubes are provided through the material leveling plate, the upper ends of the feed tubes are flush with the upper surface of the material leveling plate, and the lower ends thereof protrude downward below the lower surface of the material leveling plate. The radial spacing between any two adjacent feed tube cores is equal.
[0015] Preferably, multiple layers of material mixing plates are arranged from top to bottom inside the modification tower, and multiple material discharge pipes are arranged on each layer of material mixing plates.
[0016] Preferably, the discharge port of the activation device is connected to the feed port of the feed bin via a discharge chute, a heat preservation elevator and a feed chute in sequence.
[0017] Preferably, a plurality of material temperature sensors are arranged from top to bottom in the modification tower.
[0018] In the present utility model, research has shown that the activated carbon activated material finished product is introduced into the activated carbon material under high temperature environment (400-700°C) and fully reacts with the activated carbon material, which can greatly improve the performance of the activated carbon. Therefore, the present utility model adds a modification device after the activated carbon carbonization and activation device, and at the same time, the flue gas (with a temperature of 200-300°C and an oxygen content of 10-16%) generated during the activated carbon activation process is circulated to the modification device as a modification medium to oxidatively modify the activated carbon after activation. The oxygen-containing gas contacts the material in a countercurrent manner, and the gas enters from the lower end of the modification device and penetrates the material and then flows out from the upper end. On the one hand, the purification performance of the activated carbon material is improved through the oxidation modification treatment. On the other hand, the activated flue gas is circulated as a modification medium, which reduces the cost of separate disposal of the activated flue gas and realizes the efficient utilization of the waste heat of the activated flue gas, and further reduces the energy consumption of the oxidation modification treatment. It has the advantages of good economic benefits, strong practicality, and low production input cost. It should be noted that the oxidatively modified material comes from the high-temperature material at the outlet of the activation furnace, and the material temperature is about 500°C, which is just within the oxidatively modified 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, and the activated flue gas temperature is just within this range. If cold air is directly used as the modified gas, it needs to be heated, which is less economical and has a poor modification effect.
[0019] In the utility model, during the 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 modification degree is low and the effect is poor, while if the oxygen content is too high, it is easy to cause 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 control the oxygen content in the activated flue gas to be within the optimal modification range, the utility model also modifies the activated carbon by circulating the low-oxygen water vapor generated by the activated carbon carbonization and drying section and mixing it with the modified gas and sending it into the modification device. The influx of low-oxygen water vapor can, on the one hand, adjust the oxygen content in the activated flue gas to the optimal modification range. On the other hand, due to the presence of water vapor, it is also beneficial to prevent the activated carbon from being excessively oxidized or even spontaneously combusted at high temperatures, which is more conducive to the stable and smooth progress of the oxidation modification operation.
[0020] In the utility model, in the modification device, the activated carbon material flows uniformly from top to bottom, and the oxygen-containing modified gas flows from bottom to top. The carbon-based material is oxidatively modified in a high temperature environment (such as 400-700°C, which can be achieved by additional heating or the modified gas itself has a high temperature) 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 during modification are important links in 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 material leveling mechanism (material leveling plate and material discharge pipe) is set to control the material discharge speed of the carbon-based material descending in the chamber to achieve uniform material discharge, 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.
[0021] 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 medium inlets in the circumferential direction of the lower part of the tower wall of the modified tower and a plurality of modified medium outlets in the circumferential direction of the upper part of the tower wall of the modified tower, the modified gas is simultaneously blown into each area inside the modification device, and then flows upward from different areas, thereby ensuring the uniformity of the airflow in each area of the modification device, 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 medium inlet and a ventilation grille on each modified medium 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 beneficial large particles from flowing out.
[0022] In the present invention, in order to further improve the uniformity and stability of the contact between the modified gas and the material, a material mixing plate is further arranged inside the modification tower to further improve the uniformity of the material flowing downward in the modification device. In a preferred embodiment of the present invention, material mixing plates are arranged at the upper and lower parts of the inner cavity of the modification device. In the material mixing plate, a feed pipe is provided at the center thereof, which is called the central feed pipe. A plurality of layers of feed pipes are arranged in a regular hexagonal arrangement around the outer side of the feed pipe (that is, the centers of all the feed pipes in the same layer are connected in sequence to form a hexagon, the closer to the outside, the larger the regular hexagon, and the spacing between any two adjacent layers of regular hexagons is consistent) until it is spread over the entire material mixing plate (such as Figure 2 As shown in the figure, the radial spacing between any two adjacent feed pipes is the same. That is, the design of the multi-layer material leveling plate 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.
[0023] In the present invention, in order to make the modified gas evenly distributed, the design of the modified medium inlet (or outlet) is at least symmetrically arranged on two opposite side walls of the modification device, and can also be evenly distributed around the outer wall of the entire modification device. The air intake main pipe (or exhaust main pipe) is connected to the modified medium inlet (or outlet) through multiple air flow branches, and is provided with a high temperature gasket and fixed to the side wall by bolts. In addition, the lower end of the feed pipe extends downward from the leveling plate to a certain length. After the material flows out from the bottom of the feed pipe, an empty area will be formed between the feed pipe outlet and the leveling plate, which is conducive to the formation of an air chamber. The modified gas enters the oxidation modification zone from the lower air chamber of the bottommost leveling plate through the feed pipe of the leveling plate, penetrates the material layer, and then converges in the air chamber on the lower side of the topmost leveling plate, and then flows out through the feed pipe of the leveling plate and the modified medium outlet. This is conducive to the modified gas flowing into the feed pipes of all the bottommost leveling plates, and then evenly distributed in the oxidation zone, so as to improve the uniformity of the contact between the modified gas and the activated carbon material.
[0024] In the utility model, a plurality of temperature sensor interfaces are provided on the modification device, 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 the problem.
[0025] Compared with the prior art, the beneficial technical effects of the utility model are as follows:
[0026] 1: The utility model improves the purification performance of the activated carbon material by adding a modification device after the activated carbon carbonization and activation device through oxidation modification treatment; it also reduces the cost of separate disposal of the activated flue gas and realizes efficient utilization of the waste heat of the activated flue gas, and further reduces the energy consumption of the oxidation modification treatment by recycling the flue gas generated during the activation of the activated carbon to the modification device as a modification medium.
[0027] 2: The utility model modifies the activated carbon by circulating the low-oxygen water vapor generated in the activated carbon carbonization and drying section and mixing it with the modified gas. On the one hand, it can adjust the oxygen content in the activated flue gas to a better modification range. On the other hand, due to the presence of water vapor, it is also beneficial to prevent the activated carbon from excessive oxidation or even spontaneous combustion at high temperature, which is more conducive to the stable and smooth progress of the oxidation modification operation.
[0028] 3: The utility model can promote the uniformity of the contact between the modified medium and the activated carbon material and the stability of the oxidation modification effect by arranging symmetrical modified air inlet and outlet outside the modification device and arranging a material leveling plate and a material discharge pipe in its inner cavity.
[0029] 3: The system 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
[0030] Figure 1 It is a schematic diagram of the overall structure of the system of the utility model.
[0031] Figure 2 This is a schematic diagram of the distribution of the feed pipe on the material leveling plate of the utility model.
[0032] Reference numerals: 1: carbonization device; 101: activated carbon raw material conveying mechanism; 102: steam conveying pipeline; 2: activation device; 201: flue gas conveying pipeline; 202: discharge chute; 203: insulation elevator; 204: feed chute; 3: modification device; 301: feed bin; 302: modification tower; 303: finished product conveying mechanism; 305: material leveling plate; 306: feed pipe; 307: material temperature sensor; 4: modification medium blowing mechanism; 401: wind machine; 402: air intake pipe; 403: first temperature detector; 404: first oxygen content detector; 405: second temperature detector; 406: second oxygen content detector; 407: first electric valve; 408: wind speed detector; 409: first explosion-proof valve; 5: modified medium purification mechanism; 501: exhaust pipe; 502: dust collector; 503: third temperature detector; 504: second electric valve; 505: pressure detector; 506: second explosion-proof valve. DETAILED DESCRIPTION
[0033] 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.
[0034] A modified activated carbon production system, the system comprises a carbonization device 1, an activation device 2 and a modification device 3. According to the direction of the material, the carbonization device 1, the activation device 2 and the modification device 3 are connected in series in sequence. The feed port of the carbonization device 1 is connected to the activated carbon raw material conveying mechanism 101. The discharge port of the modification device 3 is connected to the finished product conveying mechanism 303. A modified medium inlet is provided at one end close to the discharge port of the modification device 3, and a modified medium outlet is provided at one end close to the feed port of the modification device 3. The smoke outlet of the activation device 2 is connected to the modified medium inlet of the modification device 3 through a smoke conveying pipe 201.
[0035] Preferably, the carbonization device 1 comprises a drying section, a preheating section and a carbonization section which are connected in series. The steam outlet of the drying section of the carbonization device 1 is connected to the modified medium inlet of the modification device 3 through a steam delivery pipeline 102 .
[0036] Preferably, the modification device 3 comprises a feed bin 301 and a modification tower 302. The feed bin 301 is arranged on the top feed port of the modification tower 302. The bottom discharge port of the modification tower 302 is connected to the finished product conveying mechanism 303. The modification medium inlet and the modification medium outlet are respectively opened at the lower part and the upper part of the tower wall of the modification tower 302. Preferably, an air lock discharge valve 304 is arranged on both the top feed port and the bottom discharge port of the modification tower 302.
[0037] Preferably, the system further comprises a modified medium blowing mechanism 4, which comprises a fan 401 and an air intake pipe 402. The air intake end of the fan 401 is connected to the flue gas delivery pipe 201 and the steam delivery pipe 102, and the exhaust end thereof is connected to the modified medium inlet at the lower part of the tower wall of the modification tower 302 through the air intake pipe 402. Preferably, the air intake pipe 402 is covered with a heat preservation sleeve.
[0038] Preferably, according to the direction of the airflow, the smoke delivery pipe 201 and the steam delivery pipe 102 are respectively connected to the upstream section and the downstream section of the air inlet end pipe of the fan 401, and a first temperature detector 403 and a first oxygen content detector 404 are arranged on the midstream section of the air inlet end pipe of the fan 401 between the smoke delivery pipe 201 and the steam delivery pipe 102. A second temperature detector 405, a second oxygen content detector 406, a first electric valve 407, a wind speed detector 408 and a first explosion-proof valve 409 are arranged on the air inlet main pipe 402.
[0039] Preferably, a plurality of modifying medium inlets are provided in the circumferential direction of the lower part of the tower wall of the modifying tower 302, and the exhaust end of the air intake main pipe 402 surrounds the lower part of the tower wall of the modifying tower 302 and is connected to the plurality of modifying medium inlets at the same time. Preferably, an air intake grille is provided on each modifying medium inlet.
[0040] Preferably, the system further comprises a modified medium purification mechanism 5, which comprises an exhaust pipe 501 and a dust collector 502. The air inlet of the dust collector 502 is connected to the modified medium outlet at the upper part of the tower wall of the modification tower 302 through the exhaust pipe 501. The exhaust pipe 501 is provided with a third temperature detector 503, a second electric valve 504, a pressure detector 505 and a second explosion-proof valve 506.
[0041] Preferably, a plurality of modified medium outlets are provided in the circumferential direction of the upper wall of the modified tower 302, and the air inlet end of the exhaust main pipe 501 surrounds the upper wall of the modified tower 302 and is connected to the plurality of modified medium outlets at the same time. Preferably, an exhaust grille is provided on each modified medium outlet.
[0042] Preferably, a material leveling plate 305 is further provided inside the modification tower 302, and a plurality of material discharge pipes 306 are provided through the material leveling plate 305, the upper ends of the material discharge pipes 306 are flush with the upper surface of the material leveling plate 305, and the lower ends thereof protrude downward below the lower surface of the material leveling plate 305. The radial spacing between the cores of any two adjacent material discharge pipes 306 is equal.
[0043] Preferably, multiple layers of material leveling plates 305 are provided inside the modification tower 302 from top to bottom, and multiple material discharge pipes 306 are provided on each layer of material leveling plates 305 .
[0044] Preferably, the discharge port of the activation device 2 is connected to the feed port of the feed bin 301 through the discharge chute 202, the heat preservation elevator 203 and the feed chute 204 in sequence.
[0045] Preferably, a plurality of material temperature sensors 307 are arranged in the modification tower 302 from top to bottom.
[0046] Example 1
[0047] like Figure 1-2 As shown, a modified activated carbon production system includes a carbonization device 1, an activation device 2 and a modification device 3. According to the direction of the material, the carbonization device 1, the activation device 2 and the modification device 3 are connected in series in sequence. The feed port of the carbonization device 1 is connected to the activated carbon raw material conveying mechanism 101. The discharge port of the modification device 3 is connected to the finished product conveying mechanism 303. A modified medium inlet is provided at one end close to the discharge port of the modification device 3, and a modified medium outlet is provided at one end close to the feed port of the modification device 3. The smoke outlet of the activation device 2 is connected to the modified medium inlet of the modification device 3 through the smoke conveying pipe 201.
[0048] Example 2
[0049] Example 1 is repeated, except that the carbonization device 1 includes a drying section, a preheating section and a carbonization section connected in series. The steam outlet of the drying section of the carbonization device 1 is connected to the modified medium inlet of the modification device 3 through a steam delivery pipeline 102 .
[0050] Example 3
[0051] Example 2 is repeated, except that the modification device 3 includes a feed bin 301 and a modification tower 302. The feed bin 301 is arranged on the top feed port of the modification tower 302. The bottom discharge port of the modification tower 302 is connected to the finished product conveying mechanism 303. The modification medium inlet and the modification medium outlet are respectively opened at the lower part and the upper part of the tower wall of the modification tower 302. The top feed port and the bottom discharge port of the modification tower 302 are both provided with air lock discharge valves 304.
[0052] Example 4
[0053] Example 3 is repeated, except that the system further includes a modified medium blowing mechanism 4, which includes a fan 401 and an air intake pipe 402. The air intake end of the fan 401 is connected to the flue gas delivery pipeline 201 and the steam delivery pipeline 102, and the exhaust end thereof is connected to the modified medium inlet at the lower part of the tower wall of the modification tower 302 through the air intake pipe 402. The air intake pipe 402 is covered with a heat preservation sleeve.
[0054] Example 5
[0055] Example 4 is repeated, except that the smoke delivery pipe 201 and the steam delivery pipe 102 are respectively connected to the upstream section and the downstream section of the air inlet end pipe of the fan 401 according to the direction of the air flow, and a first temperature detector 403 and a first oxygen content detector 404 are arranged on the midstream section of the air inlet end pipe of the fan 401 between the smoke delivery pipe 201 and the steam delivery pipe 102. A second temperature detector 405, a second oxygen content detector 406, a first electric valve 407, a wind speed detector 408 and a first explosion-proof valve 409 are arranged on the air inlet main pipe 402.
[0056] Example 6
[0057] Example 5 was repeated, except that a plurality of modifying medium inlets were provided in the circumferential direction of the lower part of the tower wall of the modifying tower 302, and the exhaust end of the air intake main pipe 402 surrounded the lower part of the tower wall of the modifying tower 302 and was connected to the plurality of modifying medium inlets at the same time. An air intake grille was provided on each modifying medium inlet.
[0058] Example 7
[0059] Example 6 is repeated, except that the system further includes a modified medium purification mechanism 5, which includes an exhaust pipe 501 and a dust collector 502. The air inlet of the dust collector 502 is connected to the modified medium outlet at the upper part of the tower wall of the modification tower 302 through the exhaust pipe 501. The exhaust pipe 501 is provided with a third temperature detector 503, a second electric valve 504, a pressure detector 505 and a second explosion-proof valve 506.
[0060] Example 8
[0061] Example 7 was repeated, except that a plurality of modifying medium outlets were provided in the circumferential direction of the upper wall of the modifying tower 302, and the air inlet end of the exhaust main pipe 501 surrounded the upper wall of the modifying tower 302 and was connected to the plurality of modifying medium outlets at the same time. An exhaust grille was provided on each modifying medium outlet.
[0062] Example 9
[0063] Example 8 was repeated, except that a material leveling plate 305 was further provided inside the modification tower 302, and a plurality of material discharge pipes 306 were provided through the material leveling plate 305, the upper ends of the material discharge pipes 306 were flush with the upper surface of the material leveling plate 305, and the lower ends thereof protruded downward to below the lower surface of the material leveling plate 305. The radial spacing between the cores of any two adjacent material discharge pipes 306 was equal.
[0064] Example 10
[0065] Example 9 is repeated, except that multiple layers of material leveling plates 305 are provided from top to bottom inside the modification tower 302 , and multiple material discharge pipes 306 are provided on each layer of material leveling plates 305 .
[0066] Embodiment 11
[0067] Example 10 is repeated, except that the discharge port of the activation device 2 is connected to the feed port of the feed bin 301 through the discharge chute 202, the heat preservation elevator 203 and the feed chute 204 in sequence.
[0068] Example 12
[0069] Example 11 is repeated, except that a plurality of material temperature sensors 307 are arranged from top to bottom in the modification tower 302 .
Claims
1. A modified activated carbon production system, characterized in that: The system comprises a carbonization device (1), an activation device (2) and a modification device (3); the carbonization device (1), the activation device (2) and the modification device (3) are connected in series in sequence according to the direction of the material; the feed port of the carbonization device (1) is connected to an activated carbon raw material conveying mechanism (101); the discharge port of the modification device (3) is connected to a finished product conveying mechanism (303); a modification medium inlet is provided at one end close to the discharge port of the modification device (3), and a modification medium outlet is provided at one end close to the feed port of the modification device (3); the smoke outlet of the activation device (2) is connected to the modification medium inlet of the modification device (3) through a smoke conveying pipeline (201).
2. The system according to claim 1, characterized in that: The carbonization device (1) comprises a drying section, a preheating section and a carbonization section which are sequentially connected in series; the steam outlet of the drying section of the carbonization device (1) is connected to the modified medium inlet of the modification device (3) via a steam delivery pipeline (102).
3. The system according to claim 2, characterized in that: The modification device (3) comprises a feed bin (301) and a modification tower (302); the feed bin (301) is arranged on the top feed port of the modification tower (302); the bottom discharge port of the modification tower (302) is connected to the finished product conveying mechanism (303); and the modification medium inlet and the modification medium outlet are respectively arranged at the lower part and the upper part of the tower wall of the modification tower (302).
4. The system according to claim 3, characterized in that: Air-locking discharge valves (304) are provided at both the top feed port and the bottom discharge port of the modification tower (302).
5. The system according to claim 3, characterized in that: The system also includes a modified medium blowing mechanism (4), which includes a fan (401) and an air intake pipe (402); the air intake end of the fan (401) is connected to the smoke delivery pipe (201) and the steam delivery pipe (102), and the exhaust end is connected to the modified medium inlet at the lower part of the tower wall of the modification tower (302) through the air intake pipe (402).
6. The system according to claim 5, characterized in that: The air intake main pipe (402) is covered with a heat-insulating jacket.
7. The system according to claim 5, characterized in that: According to the direction of the airflow, the smoke conveying pipeline (201) and the steam conveying pipeline (102) are respectively connected to the upstream section and the downstream section of the air inlet end pipeline of the fan (401), and a first temperature detector (403) and a first oxygen content detector (404) are arranged on the midstream section of the air inlet end pipeline of the fan (401) between the smoke conveying pipeline (201) and the steam conveying pipeline (102); and a second temperature detector (405), a second oxygen content detector (406), a first electric valve (407), a wind speed detector (408) and a first explosion-proof valve (409) are arranged on the air inlet main pipe (402).
8. The system according to claim 7, characterized in that: A plurality of modifying medium inlets are provided in the circumferential direction of the lower part of the tower wall of the modifying tower (302), and the exhaust end of the air inlet main pipe (402) surrounds the lower part of the tower wall of the modifying tower (302) and is connected to the plurality of modifying medium inlets at the same time.
9. The system according to claim 8, characterized in that: An air intake grille is provided on each modified medium inlet.
10. The system according to any one of claims 3 to 9, characterized in that: The system further comprises a modified medium purification mechanism (5), wherein the modified medium purification mechanism (5) comprises an exhaust pipe (501) and a dust collector (502); an air inlet of the dust collector (502) is connected to a modified medium outlet at an upper portion of a tower wall of a modified tower (302) through the exhaust pipe (501); and a third temperature detector (503), a second electric valve (504), a pressure detector (505) and a second explosion-proof valve (506) are arranged on the exhaust pipe (501).
11. The system according to claim 10, characterized in that: A plurality of modified medium outlets are provided in the circumferential direction of the upper wall of the modified tower (302), and the air inlet end of the exhaust main pipe (501) surrounds the upper wall of the modified tower (302) and is connected to the plurality of modified medium outlets at the same time.
12. The system according to claim 11, characterized in that: An exhaust grille is provided on each modified medium outlet.
13. The system according to any one of claims 3-9, 11-12, characterized in that: A material leveling plate (305) is also provided inside the modification tower (302), and a plurality of material discharge pipes (306) are provided through the material leveling plate (305). The upper ends of the material discharge pipes (306) are flush with the upper surface of the material leveling plate (305), and the lower ends thereof protrude downward to below the lower surface of the material leveling plate (305); and the radial spacing between the tube cores of any two adjacent material discharge pipes (306) is equal.
14. The system according to claim 10, characterized in that: A material leveling plate (305) is also provided inside the modification tower (302), and a plurality of material discharge pipes (306) are provided through the material leveling plate (305). The upper ends of the material discharge pipes (306) are flush with the upper surface of the material leveling plate (305), and the lower ends thereof protrude downward to below the lower surface of the material leveling plate (305); and the radial spacing between the tube cores of any two adjacent material discharge pipes (306) is equal.
15. The system according to claim 13, characterized in that: Multiple layers of material leveling plates (305) are arranged from top to bottom inside the modification tower (302), and multiple material discharge pipes (306) are arranged on each layer of material leveling plates (305).
16. The system according to claim 14, characterized in that: Multiple layers of material leveling plates (305) are arranged from top to bottom inside the modification tower (302), and multiple material discharge pipes (306) are arranged on each layer of material leveling plates (305).
17. The system according to any one of claims 3-9, 11-12, 14-16, characterized in that: The discharge port of the activation device (2) is connected to the feed port of the feed bin (301) via the discharge chute (202), the heat preservation elevator (203) and the feed chute (204) in sequence; and / or Several material temperature sensors (307) are arranged from top to bottom in the modification tower (302).
18. The system according to claim 10, characterized in that: The discharge port of the activation device (2) is connected to the feed port of the feed bin (301) via the discharge chute (202), the heat preservation elevator (203) and the feed chute (204) in sequence; and / or Several material temperature sensors (307) are arranged from top to bottom in the modification tower (302).
19. The system according to claim 13, characterized in that: The discharge port of the activation device (2) is connected to the feed port of the feed bin (301) through the discharge chute (202), the heat preservation elevator (203) and the feed chute (204) in sequence; and / or Several material temperature sensors (307) are arranged from top to bottom in the modification tower (302).