CN115770560A - Method for preparing adsorbent through carbonization treatment and in-situ activation and integrated device - Google Patents
Method for preparing adsorbent through carbonization treatment and in-situ activation and integrated device Download PDFInfo
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- CN115770560A CN115770560A CN202211591924.4A CN202211591924A CN115770560A CN 115770560 A CN115770560 A CN 115770560A CN 202211591924 A CN202211591924 A CN 202211591924A CN 115770560 A CN115770560 A CN 115770560A
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- adsorbent
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- steam
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- 239000003463 adsorbent Substances 0.000 title claims abstract description 62
- 230000004913 activation Effects 0.000 title claims abstract description 59
- 238000003763 carbonization Methods 0.000 title claims abstract description 55
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 36
- 239000010921 garden waste Substances 0.000 claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003546 flue gas Substances 0.000 claims abstract description 24
- 238000000197 pyrolysis Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 17
- 238000000746 purification Methods 0.000 claims abstract description 13
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 230000010354 integration Effects 0.000 claims abstract description 4
- 238000001994 activation Methods 0.000 claims description 55
- 239000000843 powder Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000010000 carbonizing Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 13
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000010170 biological method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The invention relates to the technical field of garden waste recycling treatment, in particular to a method and an integrated device for preparing an adsorbent by carbonization treatment and in-situ activation, which comprises the steps of crushing and homogenizing garden waste, and granulating; the formed particle materials after the materialization are conveyed to a carbonization and activation furnace through a feeder, the materials are firstly dried and carbonized at the front end in the furnace to generate pyrolysis gas and carbon, the pyrolysis gas generates high-temperature flue gas through oxygen supply combustion and provides energy for the whole carbonization and activation system, the rest heat flue gas generates steam through a steam boiler, and the carbonized carbon is activated at 800-900 ℃ to generate an adsorbent. The invention converts garden woody waste into steam and carbon adsorbent in situ through the integration of carbonization and activation as the core, the steam is self-used and energy is supplied externally, and the carbon adsorbent can be used for purification treatment of sewage, odor, flue gas and the like, thereby providing a new treatment path for landfill or incineration of low-quality and high-pollution treatment of the garden woody waste at present.
Description
Technical Field
The invention relates to the technical field of garden waste recycling treatment, in particular to a method for preparing an adsorbent through carbonization treatment and in-situ activation and an integrated device.
Background
With the continuous expansion of urbanization and landscaping rate, the quantity of garden wastes increases day by day, and the annual output of green wastes exceeds 4000 million tons. The garden waste mainly comprises herbaceous and woody wastes, wherein the woody wastes account for more than 53 percent, the herbaceous waste is treated by biological methods such as compost and the like for resource utilization, and the woody wastes which are difficult to be treated by the biological method are usually treated by landfill or incineration, so that the pressure of municipal waste treatment and environmental pollution are caused, and the waste of resources is also caused.
Under the background of promoting circulation, reducing pollution and carbon emission, exploring a new way for treating garden waste and realizing high-quality resource utilization become key points for solving garden woody waste. However, the garden waste carbonization treatment technology faces the shortage of integration engineering application and the utilization bottleneck of the carbon product of the carbonized derivative becomes a prominent obstacle for the industrial development of the pyrolysis carbonization treatment of the garden waste.
Disclosure of Invention
In view of the above, the present invention aims to provide an effective absorption treatment approach and a method and an integrated apparatus for synchronously realizing high-quality resource utilization thereof, which promote the engineering application and popularization of pyrolysis and carbonization technology in garden wastes, integrate crushing homogenization, columnar particle forming, carbonization and activation, carbon separation, hot steam and flue gas purification, and convert the garden or similar garden woody wastes into carbon adsorbents and steam energy sources through the carbonization and activation technology, wherein the heat and steam are supplied for sale in excess parts except for the drying, carbonization and activation of the wood adsorbents, and the generated carbon adsorbents can be used as columnar adsorbents or powder adsorbents for sewage purification, deodorization or flue gas purification.
Based on the above purpose, the invention provides a method for preparing an adsorbent by carbonization treatment and in-situ activation, which comprises the following steps:
crushing garden waste by a crushing homogenizer, homogenizing different garden waste parts, and then compressing and molding the garden waste parts into granules according to the requirement of the particle size of an adsorbent;
b, conveying the homogenized molding particle material in the step a to a carbonization and activation furnace through a feeder, drying and carbonizing the material at the front end in the furnace to generate pyrolysis gas and carbon, generating high-temperature flue gas by oxygen supply combustion of the pyrolysis gas and providing energy for the whole carbonization and activation system, generating steam by the remaining heat flue gas through a steam boiler, and activating the carbonized carbon at 800-900 ℃ to generate an adsorbent under the energy provided by the rear end of the steam boiler and the generated steam in the system;
and c, feeding the granular adsorbent generated in the step b into a carbon sieving machine, using the molded granular adsorbent as a better granular adsorbent, and grinding the rest of the granular adsorbent to be less than 200 meshes as a powder adsorbent.
D, the steam generated from the steam boiler in the step b is used for activation, other steam is provided for external use, and the flue gas generated by the boiler is subjected to deacidification and dust removal and then is discharged after reaching the standard.
As a preferable technical scheme of the invention, the garden waste can also be firewood forests, forestry residues and shrubbery forests.
As a preferred technical scheme of the invention, the garden waste entering the carbonization activation furnace in the step a is in a 3-4mm column shape which is suitable for the column-shaped adsorbent after being crushed and formed.
As a preferred technical scheme of the invention, the carbonization and activation furnace in the step b integrates carbonization treatment of garden waste and activation of carbon.
As a preferred technical scheme of the present invention, the heat required for carbonization and activation in step b is provided in situ for the energy generated by the combustion of the pyrolysis gas, and the steam required for activation is provided in situ for the steam generated by the combustion of the pyrolysis gas.
In a preferred embodiment of the present invention, the activated carbon in step c is formed into a column-shaped adsorbent, which is crushed and ground to 200 mesh or less to form a powder adsorbent, and the produced adsorbent is used as an adsorbent for purifying sewage or flue gas.
As a preferred technical scheme of the invention, the integrated device comprises a garden waste crushing and homogenizing machine, a particle forming machine, a carbonization and activation furnace, a steam boiler, a carbon treatment machine, a flue gas purification device, an auxiliary system and the like.
As a preferred technical scheme of the invention, the integrated device is integrated by devices such as crushing homogenization, particle forming, carbonization and activation furnace, steam boiler, carbon separation discharging machine, flue gas purification and the like.
As a preferred technical scheme of the invention, the carbonization and activation furnace integrates carbonization and carbon activation of the garden wastes.
The method and the integrated device for preparing the adsorbent by carbonization treatment and in-situ activation have the beneficial effects that through the technical integration taking carbonization activation as a core, garden woody waste is converted into steam and a carbon adsorbent in situ, the steam is self-used and supplied with energy, and the carbon adsorbent can be used for purifying sewage, odor, smoke and the like, so that a new treatment path is provided for the low-quality and high-pollution treatment of landfill or incineration of the garden woody waste at present, the problem of overhigh cost of the carbon adsorbent in the purification treatment of the sewage, the odor and the smoke can be solved, and the engineering application of the pyrolysis carbonization technology in the resource field of garden waste can be promoted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow chart of a method and an integrated apparatus for preparing an adsorbent by carbonization treatment and in-situ activation according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the embodiment, as shown in fig. 1, the method for preparing the adsorbent by carbonization and in-situ activation comprises the following steps:
crushing garden waste by a crushing homogenizer, homogenizing different garden waste parts, and then compressing and molding the garden waste parts into granules according to the requirement of the particle size of an adsorbent;
b, conveying the homogenized molding particle material in the step a to a carbonization and activation furnace through a feeder, drying and carbonizing the material at the front end in the furnace to generate pyrolysis gas and carbon, generating high-temperature flue gas by oxygen supply combustion of the pyrolysis gas and providing energy for the whole carbonization and activation system, generating steam by the remaining heat flue gas through a steam boiler, and activating the carbonized carbon at 800-900 ℃ to generate an adsorbent under the energy provided by the rear end of the steam boiler and the generated steam in the system;
and c, feeding the granular adsorbent generated in the step b into a carbon sieving machine, using the molded granular adsorbent as a better granular adsorbent, and grinding the rest of the granular adsorbent to be less than 200 meshes as a powder adsorbent.
And d, supplying the rest of the steam generated from the steam boiler in the step b to the outside for use except for activation, and performing deacidification and dust removal on the flue gas generated by the boiler to achieve the standard and discharging.
The garden waste can also be firewood carbon forest, forestry residues and shrubbery.
And c, the garden waste entering the carbonization and activation furnace in the step a is in a 3-4mm column shape which is suitable for the column-shaped adsorbent after being crushed and formed.
The carbonization and activation furnace in the step b integrates carbonization treatment of the garden waste and activation of carbon.
And b, providing the energy generated by the combustion of the pyrolysis gas in situ by using the heat required by carbonization and activation in the step b, and providing the steam generated by the combustion of the pyrolysis gas in situ by using the steam required by activation.
And c, grinding the formed carbon after being activated in the step c into powder below 200 meshes to obtain the powder adsorbent, wherein the obtained adsorbent is used as an adsorbent required for sewage or flue gas purification.
The integrated device comprises a garden waste crushing and homogenizing machine, a particle forming machine, a carbonization and activation furnace, a steam boiler, a carbon processor, a flue gas purification device, an auxiliary system and the like.
The integrated device is integrated by devices such as crushing homogenization, particle forming, carbonization activation furnace, steam boiler, carbon separation discharging machine, flue gas purification and the like.
The carbonization and activation furnace integrates the carbonization of the garden waste and the activation of the carbon.
Crushing and grinding woody parts such as branches and the like in garden waste with the water content of 12t/d less than 15%, then forming the crushed and ground woody parts into particles with the particle size of 2-6mm by a forming machine, adjusting an even feeder to evenly convey 1000kg/h of the particle materials to a sealed feeding bin of a pyrolysis activation furnace, drying and carbonizing the materials in an integrated furnace, activating the materials by water vapor, carrying out oxygen supply and combustion with pyrolysis gas at the temperature of 800-900 ℃, drying and carbonizing for 20-30 minutes, wherein the activation time period is 10-20 minutes, high-temperature flue gas with the density of about 5000Nm & lt 3 & gt/h generated by complete combustion of the pyrolysis gas enters a waste heat boiler, the yield of activated carbon adsorbent is about 2 tons/day, the specific surface area of carbon is about 600-800m & lt 2 & gt/g, the waste heat boiler generates 0.8MPa steam for 60 tons/day, and tail gas with the temperature of 150 ℃ generated by the waste heat boiler is subjected to cloth bag dust removal and wet deacidification and discharged after reaching the standard.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or some technical features can be replaced. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for preparing an adsorbent by carbonization treatment and in-situ activation is characterized by comprising the following steps:
crushing garden waste by a crushing homogenizer, homogenizing different garden waste parts, and then compressing and molding the garden waste parts into granules according to the requirement of the particle size of an adsorbent;
b, conveying the homogenized molding particle material in the step a to a carbonization and activation furnace through a feeder, drying and carbonizing the material at the front end in the furnace to generate pyrolysis gas and carbon, generating high-temperature flue gas by oxygen supply combustion of the pyrolysis gas and providing energy for the whole carbonization and activation system, generating steam by the remaining heat flue gas through a steam boiler, and activating the carbonized carbon at 800-900 ℃ to generate an adsorbent under the energy provided by the rear end of the steam boiler and the generated steam in the system;
and c, feeding the granular adsorbent generated in the step b into a carbon sieving machine, using the molded granular adsorbent as a better granular adsorbent, and grinding the rest of the granular adsorbent to be less than 200 meshes as a powder adsorbent.
D, the steam generated from the steam boiler in the step b is used for activation, other steam is provided for external use, and the flue gas generated by the boiler is subjected to deacidification and dust removal and then is discharged after reaching the standard.
2. The method for preparing the adsorbent by the carbonization treatment and the in-situ activation as claimed in claim 1, wherein the garden waste can also be firewood forest, forestry residues and shrubbery.
3. The method for preparing the adsorbent through carbonization treatment and in-situ activation according to claim 1, wherein the garden waste entering the carbonization-activation furnace in the step a is in a 3-4mm column shape suitable for the column-shaped adsorbent after being crushed and formed.
4. The method for preparing the adsorbent by the carbonization treatment and the in-situ activation according to claim 1, wherein the carbonization and activation furnace in the step b integrates the carbonization treatment of the garden waste and the activation of the charcoal.
5. The method for preparing the adsorbent through carbonization treatment and in-situ activation according to claim 1, wherein the heat required for carbonization and activation in the step b is provided in situ for the energy generated by the combustion of the pyrolysis gas, and the steam required for activation is provided in situ for the steam generated by the combustion of the pyrolysis gas.
6. The method for preparing the adsorbent by the carbonization treatment and the in-situ activation according to claim 1, wherein the activated carbon in the step c is used as a columnar adsorbent, the crushed carbon is ground to 200 meshes or less to be used as a powder adsorbent, and the generated adsorbent is used as an adsorbent required for sewage or flue gas purification.
7. An integrated device applied to the method for preparing the adsorbent by the carbonization treatment and the in-situ activation as claimed in any one of claims 1 to 6, which is characterized in that the integrated device comprises a garden waste crushing and homogenizing machine, a particle forming machine, a carbonization and activation furnace, a steam boiler, a carbon treatment machine, a flue gas purification device, an auxiliary system and the like.
8. The integrated device of claim 7, wherein the integrated device is an integration of devices such as crushing and homogenizing, particle forming, carbonization and activation furnace, steam boiler, carbon separation and discharge machine, and flue gas purification.
9. The integrated device of claim 8, wherein the carbonization and activation furnace integrates carbonization and carbon activation of the garden waste.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211591924.4A CN115770560A (en) | 2022-12-09 | 2022-12-09 | Method for preparing adsorbent through carbonization treatment and in-situ activation and integrated device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211591924.4A CN115770560A (en) | 2022-12-09 | 2022-12-09 | Method for preparing adsorbent through carbonization treatment and in-situ activation and integrated device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108314040A (en) * | 2018-02-09 | 2018-07-24 | 南京林业大学 | A kind of method of wood substance grain gasifying electricity generation co-producing active carbon |
| CN113860302A (en) * | 2021-11-18 | 2021-12-31 | 同济大学 | Process and system for preparing activated carbon by self-heating pyrolysis-activation of large garbage waste wood |
| CN114405466A (en) * | 2021-11-29 | 2022-04-29 | 石家庄大众肥业有限公司 | Preparation method and system of bamboo reed biomass charcoal adsorbent |
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2022
- 2022-12-09 CN CN202211591924.4A patent/CN115770560A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108314040A (en) * | 2018-02-09 | 2018-07-24 | 南京林业大学 | A kind of method of wood substance grain gasifying electricity generation co-producing active carbon |
| CN113860302A (en) * | 2021-11-18 | 2021-12-31 | 同济大学 | Process and system for preparing activated carbon by self-heating pyrolysis-activation of large garbage waste wood |
| CN114405466A (en) * | 2021-11-29 | 2022-04-29 | 石家庄大众肥业有限公司 | Preparation method and system of bamboo reed biomass charcoal adsorbent |
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