CN101638229A - Method for producing active carbon - Google Patents
Method for producing active carbon Download PDFInfo
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- CN101638229A CN101638229A CN200910013498A CN200910013498A CN101638229A CN 101638229 A CN101638229 A CN 101638229A CN 200910013498 A CN200910013498 A CN 200910013498A CN 200910013498 A CN200910013498 A CN 200910013498A CN 101638229 A CN101638229 A CN 101638229A
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Abstract
The invention discloses a method for producing active carbon, comprising the following steps: grinding corn cobs and cornstalks into flocculent corn cob materials and flocculent cornstalk materials bya grinder respectively, evenly mixing and then sending the materials into a particle forming machine to be extruded into particle materials; placing the particle materials into a carbonization kiln to be carbonized to obtain carbonized materials; directly sending the carbonized materials into an activation kiln to be activated without cooling to obtain activated materials; grinding and grading the activated materials to obtain the finished product of active carbon. Wood gas discharged from the flue of the carbonization kiln is introduced into a heating chamber on the lower part of an activation chamber to be ignited for heating the activation kiln; high temperature flue gases generated by combustion of the wood gas are introduced into the flue on the upper part of the activation chamber for carrying out secondary heating on the activation kiln; the flue gases discharged from the flue on the upper part of the activation chamber are introduced out to serve as the heat sources of a steamboiler, and the high temperature steam generated by the steam boiler enters the activation chamber to activate the carbonized materials. The active carbon produced by the method is good in quality and low in cost.
Description
Technical field
The present invention relates to a kind of production method of gac, especially a kind of corn cob and corn stalk production process of active carbon utilized.
Background technology
Corn cob and corn stalk are the wastes of agricultural production process; the peasant is many to be used as it fuel or to carry out burning disposal; not only waste resource but also polluted environment; CN1446748 discloses a kind of active carbon with high specific surface area and preparation method; this method is raw material with the corn cob; adopt the nitrogen protection charing; do activation process for producing gac with the molecule infiltration activation solution again after the charing; but; adopt this method to produce gac and need nitrogen protection and special-purpose molecule infiltration activation solution; the production cost height that causes; CN101016154 discloses a kind of crop straws for producing gas sweetening and environmental protection process of active carbon utilized; this method is with 80-120 purpose agricultural crop straw powder; send into stirrer; the water that adds 30-40% in stirrer stirs; in spiral shaper, squeeze out the strip of ￠ 3.0-4.5mm again; after air-dry, send into carbonization in the carbide furnace; carbon bar after the carbonization is sent in the activation furnace after cooling and is activated; come out of the stove and cool off back formation granular active carbon; adopt this method to produce gac and before extrusion molding, will add water raw material; also to carry out air-dry processing after the moulding; wasted water resources; increased production cost; in addition; because with sketching charcoal cooling back reactivate, needing during activation has more increased production cost and has prolonged the production cycle again to the sketching charcoal heat temperature raising.
Summary of the invention
The technical problem that invention will solve: a kind of production method of gac is provided, and the quality of activated carbon that adopts this method to produce is good, cost is low.
The technical scheme that the technical solution problem adopts: a kind of production method of gac, described gac is produced according to following steps:
(1) with corn cob with corn stalk breaks into cotton-shaped corn core material with pulverizer respectively and cotton-shaped corn stalk material is standby;
(2) cotton-shaped corn core material and the cotton-shaped corn stalk material the preceding step made mix, and get mixture;
(3) mixture is sent into granule-forming machine and be squeezed into particulate material;
(4) particulate material is put into carbonizing kiln and carried out charing, get carbonized material;
(5) carbonized material is directly sent into the activation kiln without cooling and activate, get activated material;
(6), get active carbon finished products with the activated material crushing and classification;
In step (4), the wood gas that the carbonizing kiln flue is discharged is introduced in the heating chamber of activating chamber bottom and is lighted, and is used for step (5) the activation kiln is heated;
The high-temperature flue gas introducing activating chamber top flue that the wood gas burning is produced carries out second-heating to the activation kiln;
The flue gas that activating chamber top flue is discharged is drawn the thermal source as steam boiler, and the high-temperature steam that steam boiler produces enters activating chamber carbonized material is activated.
As preferred version of the present invention, in step (2), described cotton-shaped corn core material and cotton-shaped corn stalk material mix by 7: 3 weight ratio.
The particulate material of making in step (3) is a cylindrical pellet, and the diameter of cylinder is the 5-8 millimeter, and unit weight is 0.98 gram/cubic centimetre, and moisture is less than 14%.
In step (4), carbonization temperature is 450-500 ℃, and carbonization time is 6-7 hour.
In step (5), activation temperature is 850-900 ℃, and soak time is 3-4 hour, and activator is a water vapor.
In the reactivation process feeding amount of per kilogram carbonized material water vapor be the 2.6-3.2 kilogram/hour.
Beneficial effect: in the present invention owing to adopt corn cob and corn stalk broken into pulverizer respectively and send into granule-forming machine after cotton-shaped the mixing in proportion and be squeezed into this technical characterictic of particulate material, utilize corn cob carbon content height, the wood gas that carbonization process produces is many, utilize the starch-containing and robust fibre of corn stalk, with do not need to add the characteristics that water just can extrusion molding after corn cob mixes, having overcome independent use corn cob is difficult for being squeezed into particle and uses the corn stalk charing to burn mistake rate height separately, the hole of charcoal is big, the shortcoming of final product quality difference, make production process of active carbon of the present invention in implementation process, need not add water and just can be squeezed into particulate material, reduced the consumption of water, and do not need particulate material is carried out air-dry or drying treatment, reduced production cost, shortened the production cycle, and yield height after the charing, quality of finished product good; Since adopted with carbonized material without the cooling directly send into the activation kiln activate this technology characteristics, than having shortened the production cycle with activating again after the carbonized material cooling in the prior art, and the abundant waste heat that utilizes carbonized material, shortened the activation heating-up time, reduced in the reactivation process to reaching the fuel that activation temperature consumes, further reduced production cost, in addition, also overcome in the prior art carbonized material in process of cooling because of being exposed to easy contaminated shortcoming in the air for a long time, make the quality of activated carbon of producing better; Light in the heating chamber owing to the wood gas introducing activating chamber bottom that the carbonizing kiln flue is discharged, being used for reactivation process heats the activation kiln, waste gas to carbonization process utilizes, in reactivation process, no longer consume other fuel, when having reduced production cost, reduce exhaust gas discharging, helped environmental protection; Because the high-temperature flue gas introducing activating chamber top flue that the wood gas burning is produced carries out second-heating to the activation kiln, thereby realized only just satisfying the requirement of reactivation process to temperature with the wood gas burning that produces in the carbonization process; Owing to the thermal source of the flue gas of activating chamber's top flue discharge being drawn as steam boiler, the high-temperature steam that steam boiler produces enters activating chamber carbonized material is activated, and makes energy utilization more thorough; Owing to adopt cotton-shaped corn core material and cotton-shaped corn stalk material to mix by 7: 3 weight ratio, satisfying under the prerequisite of grain forming, improved the output of wood gas in carbon content in the particle and the carbonization process; Because the oxidation rate of corn stalk is 4 times of corn cob in carbonization process, burning mistake rate height during the corn stalk charing, corn stalk partly can be earlier by charing in the particle in carbonization process like this, and at granule interior formation pore texture, help the charing of corn cob, in reactivation process, activator directly enters the granule interior hole and activates, make activation effect better, the better quality of finished product gac; Because the diameter of the cylindrical pellet of making is the 5-8 millimeter, unit weight is 0.98 gram/cubic centimetre, moisture is less than 14%, can effectively avoid big because of particle, unit weight is big, moisture content causes charing greatly, activating velocity slow, weak effect and disadvantage little because of particle, that unit weight causes charing to overdo for a short time; Owing to reasonably define the feeding amount of carbonization temperature, carbonization time, activation temperature, soak time and water vapor, make and adopt present method can produce stay-in-grade gac; In addition, be activator owing to adopted with the water vapor, adopt other activator to reduce production cost, the no chemical residual in activation back, the gac of producing can satisfy the specification of quality of producing food and medicine.
Description of drawings
Fig. 1 is the front view of the kiln of the production gac of enforcement the inventive method;
Fig. 2 is the kiln cross section structure figure of the production gac of enforcement the inventive method;
Fig. 3 is the kiln vertical section structure figure of the production gac of enforcement the inventive method;
Fig. 4 is that the A-A of Fig. 2 is to sectional view;
Embodiment
As shown in Figure 1, the kiln of implementing the production gac of the inventive method comprises carbonizing kiln and activation kiln two parts, carbonizing kiln is positioned at the top of activation kiln, carbonizing kiln is made of the charging opening 2 of carbonizing kiln body 3, carbonizing kiln body top, the discharge port 4 of carbonizing kiln body below, and discharge port is equipped with the plate 5 of control discharging.The activation kiln is made of the opening for feed 15 on activation kiln body 8, activation kiln body top, discharge port 9, wicket 7 and the vapour line 6 of activation kiln body bottom, also be provided with to the activation kiln provides the steam boiler 10 of activation with steam in the outside of kiln, the pipeline 6 of the steam of boiler generation being sent into activating chamber passes through from the flue on activating chamber top.The discharge port 4 of carbonizing kiln and the opening for feed 15 corresponding settings that activate kiln, the material that charing is good like this rely on gravity just can directly fall into the activation kiln.
Fig. 2 and Fig. 3 also further show the internal structure of the kiln of production gac of the present invention, and the carbonizing kiln body of carbonizing kiln is made of coking chamber 25 and flue 24, are provided with cigarette hole 12 on the kiln wall between coking chamber 25 and the flue 24; The kiln body of activation kiln is made of the flue 16 on activating chamber 17, activating chamber top, the heating chamber 20 and the heating chamber wind channel 21 of activating chamber bottom, and wind channel 21 is crossed logical air inlet port 19 and is communicated with heating chamber 20, and the kiln outer air enters wind channel from intake opening 22.Carbonizing kiln and activation be provided with between kiln is connected carbonizing kiln flue 24 with activate kiln heating chamber 20 be connected flue 13.Carbonizing kiln flue 24 is divided into three layers by dividing plate 11 from top to bottom with flue, upper strata flue and lower floor flue by middle flue be connected flue 13 and be connected.Be provided with the exhaust gases passes 26 that the high-temperature flue gas that the heating chamber burning is produced imports the flue on activating chamber top at the flue 16 on activating chamber top and 20 of the heating chambers of activating chamber bottom.Also be provided with in the outside of kiln to the activation kiln provides the steam boiler 10 of activation with steam, the flue gas that returns from activating chamber's top flue 16 enters boiler by the flue 23 of kiln and steam shop, for boiler provides thermal source.Also be provided with in the outside of kiln and give the standby heating chamber 18 of kiln supplementary heating when cold kiln starts, standby heating chamber with is connected flue 13 and activates kiln heating chamber 20 and communicate.V-arrangement hopper 14 also is equipped with in bottom at carbonizing kiln, in the bottom of V-arrangement hopper discharge port 4 is set, and discharge port 4 is equipped with the plate 5 of control discharging.
As shown in Figure 3, the longitudinal section of coking chamber 25 is ∩ shape, is provided with flue 24 in the both sides and the centre of ∩ shape coking chamber.
Fig. 4 shows the structure of the exhaust gases passes 26 that is connected 16 of flue 13, heating chamber 20 and activating chamber's top flues between carbonizing kiln flue and activation kiln heating chamber, the top of activating chamber is provided with three flues, the high-temperature flue gas that comes out from heating chamber 20 enters the flue 162 of both sides, activating chamber top through exhaust gases passes 26, and turning back to middle flue 161 at the other end arrives steam boilers through the flue 23 of kiln and steam shop.Flue gas mobile in flue is that the draft by boiler chimney 1 realizes.
Working process to the kiln of implementing the inventive method describes below, raw material is added and lights from the charging opening 2 of carbonizing kiln, raw material anoxycausis in coking chamber 25 is carried out charing, in charing, produce a large amount of inflammable gass, drawing back discharge port plate 5 takes a sample, raw material to be confirmed is fully after the charing, draw back the discharge port plate again, the good material of charing this moment is discharged activated kiln opening for feed 15 from the discharge port 4 of carbonizing kiln and is fallen into activating chamber 17 and activate, the inflammable gas that produces during charing drains into the flue 24 of carbonizing kiln from cigarette hole 12, enter activation kiln heating chamber 20 by the carbonizing kiln flue with the flue 13 that is connected that activates between the kiln heating chamber, with from intake opening 22 through the air channel 21, light after the air mixed that wind hole 19 enters, activating chamber 17 is heated, the high-temperature flue gas that burning produces is through the flue 162 that flue 26 enters both sides, activating chamber top that is connected between heating chamber and activating chamber top flue, activation steam in activating chamber 20 and the vapour line 6 is heated once more, turn back to middle flue 161 at far-end, flue 23 through kiln and steam shop enters steam boiler, thermal source as steam boiler, wicket 7 by opening activating chamber in the reactivation process, activation material in the kiln is stirred, and sampling detects, after material to be activated reaches requirement after testing, open activation kiln discharge port 9, the material that activation is good be gac take out finished product.Once more that charing is good material is put into activating chamber and is activated, and finishes a new working cycle.When cold kiln starts, in standby heating chamber 18, add fuel and light, to improve the temperature of cold kiln initial start stage kiln, when the kiln works better, close standby heating chamber.In the course of the work, in time the charging opening in carbonizing kiln adds raw material, to guarantee being in the state of filling up all the time in the coking chamber.
A kind of production method of gac, described gac is produced according to following steps:
(1) with corn cob with corn stalk breaks into cotton-shaped corn core material with beater disintegrating machine respectively and cotton-shaped corn stalk material is standby;
(2) cotton-shaped corn core material of the preceding step being made and cotton-shaped corn stalk material mix by 7: 3 weight ratio, get mixture;
(3) mixture is sent into granule-forming machine and be squeezed into particulate material, described particulate material is a cylindrical pellet, and the diameter of cylinder is the 5-8 millimeter, and unit weight is 0.98 gram/cubic centimetre, and moisture is less than 14%;
(4) carbonizing kiln of particulate material being put into the kiln of the production gac of implementing the inventive method carries out charing, and carbonization temperature is 450-500 ℃, and carbonization time is 6-7 hour, gets carbonized material;
(5) carbonized material is emitted from the discharge port of carbonizing kiln without cooling, directly falling into the activation kiln activates, activation temperature is 850-900 ℃, adopt water vapor as activator, in the reactivation process according to the feeding amount 2.6-3.2 kilogram of per kilogram carbonized material water vapor/hour standard determine the feeding amount of water vapor, soak time is 3-4 hour, gets activated material;
(6), get active carbon finished products with the activated material crushing and classification.
In carbonization process, the wood gas that carbonizing kiln flue 24 is discharged is introduced in the heating chamber 20 of activating chamber 17 bottoms and is lighted, and is used for reactivation process the activation kiln is heated; 16 pairs of activation kilns of high-temperature flue gas introducing activating chamber's top flue that the wood gas burning is produced carry out second-heating; The flue gas that activating chamber's upper smoke 16 roads are discharged leads to the thermal source of the outer steam boiler 10 of kiln as steam boiler, and the high-temperature steam that produces with steam boiler enters activating chamber carbonized material is activated.
Claims (6)
1. the production method of a gac, it is characterized in that: described gac is produced according to following steps:
(1) with corn cob with corn stalk breaks into cotton-shaped corn core material with pulverizer respectively and cotton-shaped corn stalk material is standby;
(2) cotton-shaped corn core material and the cotton-shaped corn stalk material the preceding step made mix, and get mixture;
(3) mixture is sent into granule-forming machine and be squeezed into particulate material;
(4) particulate material is put into carbonizing kiln and carried out charing, get carbonized material;
(5) carbonized material is directly sent into the activation kiln without cooling and activate, get activated material;
(6), get active carbon finished products with the activated material crushing and classification;
In step (4), the wood gas that the carbonizing kiln flue is discharged is introduced in the heating chamber of activating chamber bottom and is lighted, and is used for step (5) the activation kiln is heated;
The high-temperature flue gas introducing activating chamber top flue that the wood gas burning is produced carries out second-heating to the activation kiln;
The flue gas that activating chamber top flue is discharged is drawn the thermal source as steam boiler, and the high-temperature steam that steam boiler produces enters activating chamber carbonized material is activated.
2. the production method of a kind of gac according to claim 1 is characterized in that: in step (2), described cotton-shaped corn core material and cotton-shaped corn stalk material mix by 7: 3 weight ratio.
3. the production method of a kind of gac according to claim 2, it is characterized in that: the particulate material of making in step (3) is a cylindrical pellet, and the diameter of cylinder is the 5-8 millimeter, and unit weight is 0.98 gram/cubic centimetre, and moisture is less than 14%.
4. according to the production method of claim 2 or 3 described a kind of gacs, it is characterized in that: in step (4), carbonization temperature is 450-500 ℃, and carbonization time is 6-7 hour.
5. the production method of a kind of gac according to claim 4, it is characterized in that: in step (5), activation temperature is 850-900 ℃, and soak time is 3-4 hour, and activator is a water vapor.
6. the production method of a kind of gac according to claim 5 is characterized in that: the feeding amount 2.6-3.2 kilogram of per kilogram carbonized material water vapor in the reactivation process/hour.
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| CN200910013498A CN101638229A (en) | 2009-08-28 | 2009-08-28 | Method for producing active carbon |
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| CN200910013498A CN101638229A (en) | 2009-08-28 | 2009-08-28 | Method for producing active carbon |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817524A (en) * | 2010-05-05 | 2010-09-01 | 卞奎友 | Process for producing activated carbon by physical activation method |
| CN102161484A (en) * | 2011-04-25 | 2011-08-24 | 李立建 | Zero-coal-consumption activated carbon production process and production device used in same |
| CN102583333A (en) * | 2012-01-18 | 2012-07-18 | 黑龙江大学 | Method for synthesizing porous nanographite flakes by using corn stalks as carbon source |
| WO2012149897A1 (en) * | 2011-05-03 | 2012-11-08 | 密西西比国际水务有限公司 | Method and device for preparing agricultural carbon by using an organic substance |
| CN103232037A (en) * | 2013-05-09 | 2013-08-07 | 江西碧林实业有限公司 | Process for producing active carbon by using steam physical method |
| CN103566882A (en) * | 2013-09-29 | 2014-02-12 | 安徽金叶炭素科技有限公司 | High-adsorptivity modified activated carbon and preparation method thereof |
| CN103708452A (en) * | 2012-10-09 | 2014-04-09 | 中国科学院城市环境研究所 | Self-heating continuous carbonization and activation processing method for biomass and device thereof |
| CN105728445A (en) * | 2016-01-26 | 2016-07-06 | 遂宁市华旭科技有限公司 | Method for controlling land pollution by biomass activated carbon |
| CN105776202A (en) * | 2014-12-17 | 2016-07-20 | 天津博尔迈环保科技有限公司 | Catalytic active carbon preparation method and catalytic active carbon prepared through method |
| CN106811218A (en) * | 2015-12-02 | 2017-06-09 | 东至县森茂碳业有限公司 | A kind of preparation method of charcoal |
| CN107188174A (en) * | 2017-06-19 | 2017-09-22 | 东北师范大学 | A kind of stalk prepares activated carbon multifunctional high-temperature furnace apparatus |
| CN110342510A (en) * | 2018-04-02 | 2019-10-18 | 兰固 | A kind of production method of corn stalk active carbon |
| CN110817866A (en) * | 2019-12-03 | 2020-02-21 | 深圳市起源环保科技有限公司 | Process for obtaining activated carbon by physical activation method |
| CN111591987A (en) * | 2020-06-12 | 2020-08-28 | 西藏大学 | Activated carbon prepared from highland barley straws and preparation method thereof |
| CN112850709A (en) * | 2021-01-22 | 2021-05-28 | 成都达奇能自科技有限公司 | Activated carbon activation system and activation method |
| CN113198832A (en) * | 2020-01-31 | 2021-08-03 | 深圳市起源环保科技有限公司 | Soil improvement method using biomass charcoal |
| CN116812929A (en) * | 2023-06-25 | 2023-09-29 | 中科合肥煤气化技术有限公司 | System and method for preparing activated carbon by biomass fluidized bed carbonization coupling segmented activation |
| CN117146256A (en) * | 2023-08-31 | 2023-12-01 | 青岛冠宝林活性炭有限公司 | Method for co-production of activated carbon and steam and comprehensive utilization of heat energy |
| CN118221115A (en) * | 2024-03-12 | 2024-06-21 | 宁夏尼西活性炭有限公司 | Adhesive for preparing biomass activated carbon, and preparation method and application thereof |
-
2009
- 2009-08-28 CN CN200910013498A patent/CN101638229A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817524A (en) * | 2010-05-05 | 2010-09-01 | 卞奎友 | Process for producing activated carbon by physical activation method |
| CN102161484A (en) * | 2011-04-25 | 2011-08-24 | 李立建 | Zero-coal-consumption activated carbon production process and production device used in same |
| CN102161484B (en) * | 2011-04-25 | 2012-10-10 | 李立建 | Zero-coal-consumption activated carbon production process and production device used in same |
| WO2012149897A1 (en) * | 2011-05-03 | 2012-11-08 | 密西西比国际水务有限公司 | Method and device for preparing agricultural carbon by using an organic substance |
| CN102583333A (en) * | 2012-01-18 | 2012-07-18 | 黑龙江大学 | Method for synthesizing porous nanographite flakes by using corn stalks as carbon source |
| CN103708452A (en) * | 2012-10-09 | 2014-04-09 | 中国科学院城市环境研究所 | Self-heating continuous carbonization and activation processing method for biomass and device thereof |
| CN103708452B (en) * | 2012-10-09 | 2015-08-05 | 中国科学院城市环境研究所 | A kind of autothermal continuously carbonizing activation working method of biomass and device thereof |
| CN103232037A (en) * | 2013-05-09 | 2013-08-07 | 江西碧林实业有限公司 | Process for producing active carbon by using steam physical method |
| CN103566882A (en) * | 2013-09-29 | 2014-02-12 | 安徽金叶炭素科技有限公司 | High-adsorptivity modified activated carbon and preparation method thereof |
| CN103566882B (en) * | 2013-09-29 | 2016-03-30 | 安徽金叶炭素科技有限公司 | A kind of high adsorption modified activated carbon and preparation method thereof |
| CN105776202A (en) * | 2014-12-17 | 2016-07-20 | 天津博尔迈环保科技有限公司 | Catalytic active carbon preparation method and catalytic active carbon prepared through method |
| CN106811218A (en) * | 2015-12-02 | 2017-06-09 | 东至县森茂碳业有限公司 | A kind of preparation method of charcoal |
| CN105728445A (en) * | 2016-01-26 | 2016-07-06 | 遂宁市华旭科技有限公司 | Method for controlling land pollution by biomass activated carbon |
| CN107188174A (en) * | 2017-06-19 | 2017-09-22 | 东北师范大学 | A kind of stalk prepares activated carbon multifunctional high-temperature furnace apparatus |
| CN107188174B (en) * | 2017-06-19 | 2019-03-29 | 东北师范大学 | A kind of stalk prepares active carbon multifunctional high-temperature furnace apparatus |
| CN110342510A (en) * | 2018-04-02 | 2019-10-18 | 兰固 | A kind of production method of corn stalk active carbon |
| CN110817866A (en) * | 2019-12-03 | 2020-02-21 | 深圳市起源环保科技有限公司 | Process for obtaining activated carbon by physical activation method |
| CN113198832A (en) * | 2020-01-31 | 2021-08-03 | 深圳市起源环保科技有限公司 | Soil improvement method using biomass charcoal |
| CN111591987A (en) * | 2020-06-12 | 2020-08-28 | 西藏大学 | Activated carbon prepared from highland barley straws and preparation method thereof |
| CN112850709A (en) * | 2021-01-22 | 2021-05-28 | 成都达奇能自科技有限公司 | Activated carbon activation system and activation method |
| CN116812929A (en) * | 2023-06-25 | 2023-09-29 | 中科合肥煤气化技术有限公司 | System and method for preparing activated carbon by biomass fluidized bed carbonization coupling segmented activation |
| CN116812929B (en) * | 2023-06-25 | 2023-11-28 | 中科合肥煤气化技术有限公司 | System and method for preparing activated carbon by biomass fluidized bed carbonization coupling segmented activation |
| CN117146256A (en) * | 2023-08-31 | 2023-12-01 | 青岛冠宝林活性炭有限公司 | Method for co-production of activated carbon and steam and comprehensive utilization of heat energy |
| CN117146256B (en) * | 2023-08-31 | 2024-04-09 | 青岛冠宝林活性炭有限公司 | Method for co-production of activated carbon and steam and comprehensive utilization of heat energy |
| CN118221115A (en) * | 2024-03-12 | 2024-06-21 | 宁夏尼西活性炭有限公司 | Adhesive for preparing biomass activated carbon, and preparation method and application thereof |
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