CN111056553A - High-yield rotary carbonization furnace for producing activated carbon - Google Patents
High-yield rotary carbonization furnace for producing activated carbon Download PDFInfo
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- CN111056553A CN111056553A CN202010026020.1A CN202010026020A CN111056553A CN 111056553 A CN111056553 A CN 111056553A CN 202010026020 A CN202010026020 A CN 202010026020A CN 111056553 A CN111056553 A CN 111056553A
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- furnace body
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- activated carbon
- combustion chamber
- central air
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000003763 carbonization Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003546 flue gas Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 22
- 239000000571 coke Substances 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000008093 supporting effect Effects 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 5
- 239000005539 carbonized material Substances 0.000 abstract description 3
- 208000002925 dental caries Diseases 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 5
- 230000001976 improved effect Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 this Chemical compound 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/39—Apparatus for the preparation thereof
Abstract
The invention belongs to the technical field of equipment for producing coal-based activated carbon carbonized materials, and particularly relates to a high-yield rotary carbonization furnace for producing activated carbon. The problem of the interior hot type gyration retort of prior art's material bottom pile up, contact with hot flue gas is not abundant, furnace body space utilization is low, the limited scheduling of single stove productivity, including the furnace body that can the rotation, the stove tail height of furnace body is higher than the furnace end height, the furnace body center is provided with central tuber pipe, be provided with a plurality of cavitys along central tuber pipe setting in the furnace body, be provided with a plurality of trapezoidal ranks along the cavity wall in the cavity, central tuber pipe both ends link to each other with fixed air intake and air outlet respectively through sealed rotating flange, the stove tail and the spiral feeder hopper of furnace body are connected, and connect the deposit chamber at the stove tail of furnace body, deposit chamber and high temperature hot flue gas outlet are connected, the prelude of furnace body is ejection of compact section, ejection of compact section lower part sets up discharging device, discharging device is connected with.
Description
Technical Field
The invention belongs to the technical field of equipment for producing coal-based activated carbon carbonized materials, and particularly relates to a high-yield rotary carbonization furnace for producing activated carbon.
Background
Activated carbon is a traditional and modern man-made material. Since one hundred years, the application field of the activated carbon is increasingly expanded, and the application quantity is continuously increased. The raw materials of the activated carbon mainly comprise forest product 'three residues' (wood activated carbon), coal (coal activated carbon), phosphoric acid and other activating agents. The activated carbon is widely applied to the aspects of production and life of food, beverage, medicine, water treatment, gas purification and recovery, chemical industry, smelting, national defense, agriculture and the like. The activated carbon has an excellent development prospect and a wide sale market in the future. Activated carbon is currently used in large quantities in the environmental protection, industrial and civil fields, and has achieved considerable success. The activated carbon has wide application, stable demand and more development of environment and policy. The active carbon is necessary for production and life, and the domestic productivity tends to increase day by day. However, most of the conventional activated carbon preparation furnaces adopt an activated carbon furnace with four integrated sections, namely a feeding section, a material lifting section, a carbonization section and an activation section, materials are accumulated at the bottom of the carbonization section, the carbonization section cannot be in contact reaction with hot flue gas fully, the utilization rate of a furnace body space is low, and the capacity of a single furnace is limited.
Patent application No. 20151015079.X discloses a multi-hearth furnace for preparing activated carbon, which is characterized in that a partition plate, a plurality of layers of burners, an air inducing device and a rake arm are arranged in a furnace body; although the invention can increase the material storage amount in the unit volume of the furnace body by increasing the number of the hearths continuously, the yield can be improved. But the drawback is obvious, and first it does not fully consider baffle and combustor high temperature resistant, wear resistant material, and second increases along with the thorax number constantly, and the stock volume increases, and the motor load that drives the rake arm increases at double, and third is combustor and thorax body set up in turn, and the temperature is not suitable for control, and too high low is unfavorable for product quality, and fourth is that the equipment overhauls the difficulty.
Patent document with the application number of CN207435036U discloses a high-efficiency rotary steam activation furnace, wherein a spiral steam pipeline is arranged on the inner wall of an activation furnace body, the spiral steam pipeline is communicated with a steam layer, and a plurality of steam spray heads are uniformly arranged on the outer wall of the spiral steam pipeline in a surrounding manner; the design scheme of the invention can improve the contact area of the steam and the material, so that the steam and the material are fully contacted, the efficiency is improved, and the yield is improved. However, the consideration of the abrasion resistance and high temperature resistance of the rotary furnace and the steam preheating is not comprehensive, and the abrasion of the coal material to the inner wall of the furnace and the corrosion of high-temperature smoke and steam to the furnace body in the using process are not fully considered.
Disclosure of Invention
The invention provides a high-yield rotary carbonization furnace for producing activated carbon, which aims to solve the problems of material bottom accumulation, insufficient contact with hot flue gas, low utilization rate of furnace body space, limited single-furnace capacity and the like of an internal heating type rotary carbonization furnace in the prior art.
The invention adopts the following technical scheme: the utility model provides a high yield rotation retort of production active carbon, including the furnace body that can the rotation, the stove tail height of furnace body is higher than the furnace end height, the furnace body center is provided with central tuber pipe, be provided with a plurality of cavitys that set up along central tuber pipe in the furnace body, be provided with a plurality of trapezoidal ranks along the cavity wall in the cavity, central tuber pipe both ends link to each other with fixed air intake and air outlet respectively through sealed rotating flange, the stove tail and the spiral feeder and the feeder hopper of furnace body are connected, and connect the deposit chamber at the stove tail of furnace body, deposit chamber and high temperature hot flue gas outlet connection, the prelude of furnace body is the ejection of compact section, ejection of compact section lower part sets up discharging device, discharging device is connected with guide device, ejection.
Furthermore, the trapezoid step is in a slope shape with a head angle, a cavity body is built by adopting refractory materials, and the head of the slope of the trapezoid step is consistent with the rotating direction of the furnace body.
Furthermore, a smoke channel stacked by checker bricks is arranged inside the combustion chamber, fuel gas enters the combustion chamber through a fuel gas pipe at the bottom for combustion, external coke oven gas or raw coke oven gas enters the combustion chamber through a flue, the combustion chamber is communicated with the furnace body through a gas distributor, and a heat insulation layer is arranged outside the combustion chamber.
Furthermore, the central air pipe is a stainless steel pipe, the outer side of the central air pipe is fixed with the furnace body through an S-shaped supporting steel plate, and the interior of the furnace body is provided with mullite Al2O3-SiO2The surface of the furnace body is cast by refractory castable, and a heat-insulating layer is arranged outside the furnace body.
Compared with the prior art, the invention adopts special material and structural design in the traditional rotary furnace, so that the carbonization is more sufficient, and the bottleneck of limiting the yield of the traditional carbonization furnace is broken. The main advantages are that: firstly, a large amount of high-temperature pyrolysis gas generated in the carbonization process can be independently output, so that the waste heat and the pyrolysis gas can be fully utilized; secondly, the cavity of the carbonization furnace is constructed by refractory castable and special geometric bodies, so that the accumulation of raw materials can be effectively avoided, and the hot smoke and the talking raw materials are fully carbonized; and thirdly, the arrangement of the central air pipe can effectively control the carbonization temperature and the temperature of the furnace body, avoid overheating and damage the furnace body, and prolong the service life.
Drawings
FIG. 1 is a high throughput rotary retort apparatus for producing activated carbon;
FIG. 2 is a sectional view of the inner cavity of the rotary carbonization furnace;
in the figure 1, a feed hopper; 2. a screw feeder; 3. a central air duct; 4. a discharging section; 5. sealing the rotating flange; 6. a combustor gas distributor; 7. a combustion chamber; 8. raw coke oven gas generated by an external coke oven gas or a carbonization chamber; 9. A gas pipe; 10. an air inlet pipe; 11. a material guiding and discharging device; 12. a deposition chamber; 13. a high-temperature hot flue gas outlet; 14. an air outlet pipe; 15. 304 stainless steel welding nails; 16. refractory castable; 17. an S-shaped support steel plate; 18. a trapezoidal step.
Detailed Description
As shown in fig. 1, a high-yield rotary carbonization furnace for producing activated carbon, which comprises a furnace body 19 capable of rotating, wherein the height of the tail of the furnace body 19 is higher than that of the furnace head, a central air pipe 3 is arranged at the center of the furnace body 19, a plurality of cavities are arranged in the furnace body 19 along the central air pipe 3, a plurality of trapezoidal steps 18 are arranged in the cavities along the walls of the cavities, two ends of the central air pipe 3 are respectively connected with a fixed air inlet 10 and an air outlet 14 through a sealing rotating flange 5, the tail of the furnace body 19 is connected with a spiral feeder 2 and a feed hopper 1, and is connected with a deposition chamber 12 at the tail of the furnace body 19, the deposition chamber 12 is connected with a high-temperature hot flue gas outlet 13, the head of the furnace body 19 is a discharge section 4, a discharge device is arranged at the lower part of the discharge section. The furnace body with the special structure can ensure that the temperature in the furnace body is controlled to be 700-800 DEGoAnd C, the contact surface raw materials and hot air are increased, so that the raw materials and the hot air can be fully contacted and carbonized, and compared with the conventional rotary activated carbon preparation furnace, the rotary activated carbon preparation furnace has the advantages that the space of a furnace body can be fully utilized, the capacity is increased, and the quality of the obtained product is also improved.
The central air pipe 3 is made of a stainless steel pipe made of 06Cr25Ni20 (GB/T20878-2007) and is connected with the shell of the furnace body through the S-shaped supporting steel plate 17, so that the central air pipe 3 can effectively avoid damage caused by overheating of the furnace body, control the carbonization quality and prolong the service life of the carbonization furnace. The two ends of the central air pipe 3 are connected with the fixed air inlet 10 and the fixed air outlet 14 through the sealed rotating flanges, so that waste heat can be effectively utilized, and the installation is convenient.
The S-shaped supporting steel plate 17 is made of S310 stainless steel, is as long as the rotary furnace body, and has two endsAre respectively connected with the shell and the central air pipe 3 by certain radian to form four cavities, and mullite Al is adopted2O3-SiO2The surface of the rotary furnace is poured by the refractory castable, so that the better wear-resisting strength and the service life of the rotary furnace can be ensured, and the heat-insulating layer is arranged outside the rotary furnace.
The carbonization raw materials enter the rotary carbonization furnace from the furnace tail through a feed hopper 1 and a spiral feeder 2, sequentially enter each carbonization furnace cavity along with the rotation of the furnace body, and are finally guided to a screening and packaging working section through a discharging device and a material receiving and guiding device 11 after being in countercurrent contact with hot flue gas; the discharging section 4 is made of refractory casting material with smooth surface, and the lower end of the discharging section is connected with a material receiving and guiding device 11.
As shown in figure 2, the ladder-shaped step 18 is in a slope shape with a head angle, a cavity body is built by refractory materials, the head of the slope of the ladder-shaped step 18 is consistent with the rotating direction of the furnace body 19, and the length of the ladder-shaped step 18 is consistent with the length of the rotating furnace body. Can guarantee that the carbomorphism raw materials fully shed at the cavity and avoid excessively piling up, hot flue gas contacts with the material adverse current, has increased the area of contact of carbomorphism raw materials with the flue gas like this, can guarantee the carbomorphism quality.
The inside of the combustion chamber 7 is a flue gas channel stacked by checker bricks, fuel gas enters the combustion chamber 7 through a fuel gas pipe 9 at the bottom for combustion, external coke oven gas or raw coke oven gas enters the combustion chamber 7 through a flue 8, the combustion chamber 7 is communicated with a furnace body 19 through a gas distributor 6, and the outside of the combustion chamber 7 is provided with a heat insulation layer.
When the whole rotary carbonization furnace system is installed, the furnace tail is higher than the furnace head, and a certain inclination angle is formed to facilitate discharging. The carbonized material is in countercurrent contact with the mixed gas of hot flue gas and air, and a carbonized product is prepared by a rotary carbonization furnace (AA-BB section). The process comprises the steps that firstly, a carbonized raw material passes through a feed hopper 1, then enters the interior of a rotary carbonization furnace through a spiral feeder 2, is sequentially added into each cavity along with the rotation of the furnace body, is lifted by a trapezoid step in the cavity, is fully carbonized, finally reaches a discharge section 4, is connected with a discharge device at the lower side of the discharge section 4, and then enters a product screening and packaging working section through a material receiving and guiding device 11; the furnace head is located in the area of the combustion chamber 7, where the external combustion gas 8Is coke oven gas or crude gas generated in a carbonization section, and the temperature after combustion is about 900 DEGoC, hot flue gas, namely 800-900 sprayed flue gas after the hot flue gas is firstly contacted with the air inlet pipe 10 through the gas distributor 6 to be cooledoC, the hot flue gas enters the rotary carbonization furnace, and finally, tail gas generated by the carbonization furnace is led out from a tail gas outlet 13 and can enter the combustion chamber again.
Claims (4)
1. The utility model provides a high yield rotation retort of production active carbon which characterized in that: comprises a furnace body (19) capable of rotating, the height of the tail of the furnace body (19) is higher than that of the furnace head, a central air pipe (3) is arranged at the center of the furnace body (19), a plurality of cavities are arranged in the furnace body (19) along the central air pipe (3), a plurality of trapezoidal steps (18) are arranged in the cavities along the walls of the cavities, two ends of the central air pipe (3) are respectively connected with a fixed air inlet (10) and an air outlet (14) through sealed rotating flanges (5), the tail of the furnace body (19) is connected with a spiral feeder (2) and a feed hopper (1), and the tail of the furnace body (19) is connected with a deposition chamber (12), the deposition chamber (12) is connected with a high-temperature hot flue gas outlet (13), the head part of the furnace body (19) is a discharging section (4), the lower part of the discharging section (4) is provided with a discharging device, the discharging device is connected with a material guide device (11), and the discharging section (4) is communicated with a combustion chamber (7).
2. The high-yield rotary carbonization furnace for producing activated carbon according to claim 1, wherein: the trapezoid step (18) is in a slope shape with a head angle, a cavity body is built by adopting refractory materials, and the slope head of the trapezoid step (18) is consistent with the rotation direction of the furnace body (19).
3. The high-yield rotary carbonization furnace for producing activated carbon according to claim 2, wherein: the combustion chamber (7) is internally provided with a smoke channel piled by a checker brick, fuel gas enters the combustion chamber (7) through a fuel gas pipe (9) at the bottom for combustion, external coke oven gas or crude gas enters the combustion chamber (7) through a flue (8), the combustion chamber (7) is communicated with a furnace body (19) through a gas distributor (6), and the combustion chamber (7) is externally provided with a heat-insulating layer.
4. The high-yield rotary carbonization furnace for producing activated carbon according to claim 1, wherein: the central air pipe (3) is a stainless steel pipe, the outer side of the central air pipe (3) is fixed with the furnace body (19) through an S-shaped supporting steel plate (17), and the interior of the furnace body (19) is provided with mullite Al2O3-SiO2The surface of the furnace body is poured by refractory castable, and a heat-insulating layer is arranged outside the furnace body (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911116379 | 2019-11-15 | ||
| CN2019111163791 | 2019-11-15 |
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| CN111056553A true CN111056553A (en) | 2020-04-24 |
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| CN202010026020.1A Pending CN111056553A (en) | 2019-11-15 | 2020-01-10 | High-yield rotary carbonization furnace for producing activated carbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112320799A (en) * | 2020-11-05 | 2021-02-05 | 南京建当化工科技有限公司 | Activated carbon activation treatment preparation system |
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2020
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