CN113003570A - Wood activated carbon production process and device thereof - Google Patents
Wood activated carbon production process and device thereof Download PDFInfo
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- CN113003570A CN113003570A CN202110464839.0A CN202110464839A CN113003570A CN 113003570 A CN113003570 A CN 113003570A CN 202110464839 A CN202110464839 A CN 202110464839A CN 113003570 A CN113003570 A CN 113003570A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 239000002023 wood Substances 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000001994 activation Methods 0.000 claims abstract description 229
- 230000004913 activation Effects 0.000 claims abstract description 222
- 239000003610 charcoal Substances 0.000 claims abstract description 139
- 230000001590 oxidative effect Effects 0.000 claims abstract description 75
- 238000003763 carbonization Methods 0.000 claims abstract description 23
- 239000002916 wood waste Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010000 carbonizing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- 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
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
-
- 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
- C01B32/312—Preparation
- C01B32/336—Preparation characterised by gaseous activating agents
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a production process and a device of wood activated carbon, wherein the production process of the wood activated carbon comprises the steps of crushing wood waste into wood meeting the requirement of a preset size; dehydrating the wood until the water content of the wood meets the carbonization requirement; carbonizing wood to obtain charcoal; after the charcoal is fed into an activation furnace, oxidizing gas is introduced into the activation furnace to activate the charcoal to obtain activated carbon; wherein, during the activation process, the oxidizing gas is made to form a gas flow to drive the charcoal to tumble in the activation furnace. The production process of the wood activated carbon has the advantage of high charcoal forming quality.
Description
Technical Field
The invention relates to the field of wood waste treatment, in particular to a production process and a device of wood activated carbon.
Background
Activated carbon is a specially treated carbon produced by heating an organic raw material (husk, coal, wood, etc.) in the absence of air to reduce non-carbon components (this process is called carbonization), and then reacting with a gas to erode the surface and produce a structure with developed micropores (this process is called activation).
Currently, in the activated carbon activation process, the activated carbon is usually deposited at the bottom of an activation furnace, so that the activated carbon is not fully contacted with the activation gas, and the carbonization quality of the activated carbon is affected.
Disclosure of Invention
The invention mainly aims to provide a production process of wood activated carbon, and aims to solve the technical problem of low quality of the existing activated carbon.
In order to realize the aim, the production process of the wood activated carbon provided by the invention comprises the following steps:
crushing the wood waste into wood meeting the preset size requirement;
dehydrating the timber until the water content of the timber meets the carbonization requirement;
carbonizing the wood to produce charcoal;
after the charcoal is fed into an activation furnace, introducing oxidizing gas into the activation furnace to activate the charcoal to obtain activated carbon; wherein,
during activation, the oxidizing gas is forced into a gas stream to drive the charcoal to tumble in the activation furnace.
In one embodiment, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace comprises:
and introducing oxidizing gas into the activation furnace to form a first gas flow, wherein the first gas flow flows from the bottom of the activation furnace to one side of the activation furnace in an inclined mode, and the first gas flow drives the charcoal to move from the bottom of the activation furnace to one side of the activation furnace.
In one embodiment, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace comprises:
and introducing the oxidizing gas into the activation furnace to simultaneously form two first gas flows which respectively flow to two sides of the activation furnace and do not interfere with each other, and respectively drive two parts of charcoal to move towards the two sides of the activation furnace.
In one embodiment, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a second gas flow, wherein the second gas flow flows from the bottom of the activation furnace to the top of the activation furnace, and the charcoal has the tendency of moving from the bottom of the activation furnace to the top of the activation furnace under the driving of the second gas flow.
In one embodiment, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a third gas flow, wherein the third gas flow flows to the top of the activation furnace from the side of the activation furnace opposite to the first gas flow in an inclined mode, and the third gas flow drives the charcoal to make an inclined throwing motion from one side of the activation furnace to the top of the activation furnace in an opening downward mode.
In one embodiment, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a fourth gas flow, wherein the fourth gas flow flows from the feed inlet of the activation furnace to the discharge outlet of the activation furnace.
In an embodiment, the fourth flow of gas is generated intermittently.
In one embodiment, the process for producing wood-based activated carbon further comprises:
and rotating the activation furnace to drive the charcoal to move from the feed inlet to the discharge outlet through a turbine guide plate in the activation furnace.
In one embodiment, the wood is dewatered by drying.
In order to achieve the above object, the present invention further provides a wood-based activated carbon production apparatus, comprising:
the wood waste is crushed into wood meeting the preset size requirement;
the drying oven is used for dehydrating the wood until the water content of the wood meets the carbonization requirement;
the carbonization furnace is used for carbonizing the dehydrated wood waste to prepare charcoal;
an activation furnace for activating the charcoal with an oxidizing gas to obtain activated carbon, the oxidizing gas meeting pressure and temperature requirements for activating the charcoal, wherein during the activation process, the oxidizing gas forms a gas flow to drive the charcoal to rotate in the activation furnace.
In one embodiment, two sets of first air outlet holes are arranged at the bottom of the activation furnace, the two sets of first air outlet holes are oppositely faced and respectively face to two side parts of the activation furnace in an inclined manner, third air outlet holes are arranged at two side parts of the activation furnace, the third air outlet holes face to the top of the activation furnace in an inclined manner, wherein,
the oxidizing gas can be introduced into the first gas outlet hole to form a first gas flow, and the oxidizing gas can be introduced into the third gas outlet hole to form a third gas flow, wherein the first gas flow can drive the charcoal to move from the bottom of the activation furnace to one side of the activation furnace, and the third gas flow can drive the charcoal to make an inclined throwing motion with a downward opening from one side of the activation furnace to the top of the activation furnace.
The utility model provides a wooden activated carbon production technology of technical scheme, through the activation stage at the charcoal, the oxidizing gas that makes the activated charcoal forms the air current and rolls in order to order about the charcoal in the activation furnace, so, can be on the basis of guaranteeing the charcoal activation, make the surface of charcoal can fully contact with the oxidizing gas in the stove, and then be favorable to improving the quantity and the aperture in active carbon upper hole to improve the charcoal forming quality of active carbon. Therefore, compared with the common activated carbon production process, the activated carbon generation process has the advantage of high quality of the prepared activated carbon.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a block diagram of an embodiment of an apparatus for producing wood-based activated carbon according to the present invention;
FIG. 2 is a schematic structural view of an activation furnace in another embodiment of the wood-based activated carbon production apparatus of the present invention;
FIG. 3 is a schematic structural view of an activation furnace in another embodiment of the apparatus for producing wood-based activated carbon according to the present invention;
FIG. 4 is a schematic structural view of an activation furnace in yet another embodiment of the apparatus for producing wood-based activated carbon according to the present invention;
FIG. 5 is a flow diagram of one embodiment of a process for the production of wood-based activated carbon in accordance with the present invention;
FIG. 6 is a flow diagram of another embodiment of the present invention for the production of wood-based activated carbon;
FIG. 7 is a flow diagram of yet another embodiment of a process for the production of wood activated carbon in accordance with the present invention;
FIG. 8 is a flow diagram of yet another embodiment of a wood based activated carbon production process of the present invention;
FIG. 9 is a flow diagram of yet another embodiment of a wood based activated carbon production process of the present invention;
FIG. 10 is a flow diagram of yet another embodiment of the present invention for the production of wood activated carbon.
The reference numbers illustrate:
110. a pulverizer; 120. a drying oven; 130. a carbonization furnace; 140. an activation furnace; 141. a first air outlet hole; 142. a second air outlet; 143. a third air outlet; 144. the fourth air outlet
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a wood-based activated carbon production apparatus, which can be applied to a wood-based activated carbon production process in any one of the following embodiments to produce activated carbon.
Specifically, this wooden activated carbon apparatus for producing includes:
a pulverizer 110 for pulverizing the wooden waste into a wood satisfying a predetermined size requirement;
the drying oven 120 is used for dehydrating the wood until the water content of the wood meets the carbonization requirement;
a carbonization furnace 130 for carbonizing the dehydrated wood waste to produce charcoal;
an activation furnace 140 for activating the charcoal with an oxidizing gas to obtain activated carbon, the oxidizing gas satisfying pressure and temperature requirements for activating the charcoal, wherein during the activation process, the oxidizing gas forms a gas flow to drive the charcoal to turn over in the activation furnace.
Further, two sets of first air outlet holes 141 are provided at the bottom of the activation furnace 140, the two sets of first air outlet holes 141 are opposite in orientation and respectively face two side portions of the activation furnace 140 obliquely, both side portions of the activation furnace 140 are provided with third air outlet holes 143, the third air outlet holes 143 face the top portion of the activation furnace 140 obliquely, wherein,
the oxidizing gas may be introduced into the first gas outlet 141 to form a first gas flow, and into the third gas outlet 143 to form a third gas flow. The first air flow may drive the charcoal from the bottom of the activation furnace 140 to one side of the activation furnace 140, and the third air flow may drive the charcoal to make a downward, slopping motion from one side of the activation furnace 140 to the top of the activation furnace 140.
In some embodiments (as shown in fig. 2), only one set of first air outlet holes 141 may be provided at the bottom of the activation furnace 140.
Further, two sets of second air outlets 142 are further disposed at the bottom of the activation furnace 140, the two sets of second air outlets 142 are alternately disposed with the two sets of first air outlets 141, and the second air outlets 142 face the top of the activation furnace 140. Accordingly, the oxidizing gas may be channeled to second gas outlet 142 to form a second gas stream. The charcoal has a tendency to move from the bottom of the activation furnace 140 to the top of the activation furnace 140 as driven by the second gas flow.
Further, at least one of the front, top and bottom of the activation furnace 140 is further provided with a fourth air outlet hole 144, and the fourth air outlet hole 144 faces the discharge hole of the activation furnace 140. Accordingly, the oxidizing gas may be channeled to fourth gas outlet 144 to form a fourth gas stream. The fourth gas flow flows from the feeding hole to the discharging hole.
The invention provides a production process of wood activated carbon.
In the embodiment of the present invention, as shown in fig. 5, the process for producing wood-based activated carbon includes the following steps:
and S10, smashing the wood waste into wood meeting the preset size requirement.
Specifically, after the wood waste is collected, the wood waste can be crushed by the crusher to reduce the volume of the wood waste, and then the crushed wood waste is crushed to further reduce the volume of the wood waste to obtain the required wood.
S20, dewatering the wood until the water content of the wood meets the carbonization requirement.
Specifically, the wood waste collected initially often contains more moisture, and the wood obtained by crushing the wood waste also contains more moisture, and if the wood is directly carbonized, the moisture in the wood in the carbonization process affects the carbonization efficiency; moreover, moisture in the wood can generate a large amount of water vapor after volatilization, and the water vapor can further influence the carbonization efficiency and effect and reduce the material quality of the finished product of the activated carbon. Therefore, before carbonization, the wood needs to be dehydrated to reduce the water content of the wood until the water content of the wood meets the carbonization requirement. Generally, the moisture content of the wood after dewatering is no less than 15%, no greater than 20%, i.e., the moisture content of the wood after dewatering is between 15% and 20%, such as 15%, 16%, 17%, 18%, 19%, 20%, etc.
Alternatively, in this embodiment, the timber is dewatered by drying.
It can be understood that the drying and dewatering have the advantages of rapidness, convenience, simple equipment operation and the like. In addition, because a large amount of heat can be generated during wood carbonization, the heat generated during wood carbonization can be utilized to dry the wood, so that the repeated utilization rate of energy can be improved, and the energy consumption in the preparation process of the activated carbon is further reduced. Of course, the design of the present application is not limited thereto, and in other embodiments, the wood may be dewatered by air drying or the like.
S30, carbonizing the wood to obtain the charcoal.
Specifically, after the dehydration of the wood is completed, the dehydrated wood is sent into a carbonization furnace for carbonization so as to prepare the required charcoal. Since charcoal obtained by carbonizing wood through a carbonization furnace has been widely used in the art, it will not be described herein.
And S40, introducing oxidizing gas into the activation furnace to activate the charcoal to obtain the activated carbon after the charcoal is fed into the activation furnace, wherein during the activation process, the oxidizing gas forms airflow to drive the charcoal to roll in the activation furnace.
Specifically, after the charcoal is prepared, the charcoal can be fed into an activation furnace through a conveying device such as a conveyor belt and a screw feeder to activate the charcoal to obtain the activated carbon. In this application, activated carbon is produced by introducing an oxidizing gas (e.g., carbon dioxide, air, water vapor, etc.) into an activation furnace to activate charcoal. Wherein the oxidizing gas meets the pressure and temperature requirements required to activate the charcoal.
Specifically, in the present application, during activation, the oxidizing gas creates a gas stream to drive the charcoal to tumble in the activation furnace. The charcoal can roll in the activation furnace under the impact of the oxidizing gas flow, so that the surface of the charcoal can be fully contacted with the oxidizing gas in the activation furnace, and the number and the pore diameter of pores on the activated carbon can be increased, so that the carbon forming quality of the activated carbon is improved.
It can be understood that, in the wood activated carbon production process of the technical scheme of the application, the oxidizing gas of the activated charcoal forms airflow to drive the charcoal to roll in the activation furnace in the activation stage of the charcoal, so that the surface of the charcoal can be fully contacted with the oxidizing gas in the furnace on the basis of ensuring the activation of the charcoal, and the number and the pore diameter of the pores on the activated carbon can be improved, and the carbon formation quality of the activated carbon can be improved. Therefore, compared with the common activated carbon production process, the activated carbon generation process has the advantage of high quality of the prepared activated carbon.
In one embodiment, as shown in fig. 2 and 6, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace comprises:
and S41, introducing oxidizing gas into the activation furnace to form a first gas flow, wherein the first gas flow flows from the bottom of the activation furnace to one side of the activation furnace in an inclined mode, and the first gas flow drives the charcoal to move from the bottom of the activation furnace to one side of the activation furnace.
Specifically, the bottom of the activation furnace 140 is provided with a first air outlet hole 141, and the first air outlet hole 141 is inclined from the bottom of the activation furnace 140 toward one side of the activation furnace 140. During activation, the oxidizing gas may be introduced into the first air outlet 141, and the air flow blown out from the first air outlet 141 is a first air flow, and the first air flow may obliquely flow from the bottom of the activation furnace 140 to one side of the activation furnace 140 according to the orientation of the first air outlet 141.
Specifically, the charcoal is generally deposited on the bottom of the activation furnace 140 after entering the activation furnace 140, so that the charcoal on the bottom of the activation furnace 140 can float from the activation furnace 140 and move to one side of the activation furnace 140 under the driving of the first air flow; when the charcoal is driven by the first air flow and cannot overcome the gravity of the charcoal, the charcoal falls back to the bottom of the activation furnace 140 under the action of the gravity. The charcoal rolls during the charcoal moves to one side of the activation furnace 140 and the charcoal falls back to the bottom of the activation furnace 140, so that the contact area of the charcoal with the oxidizing gas is increased to improve the char formation quality of the activated carbon.
It is worth noting that the first air flow is formed by introducing the oxidizing gas into the first air outlet hole 141 at the bottom of the activation furnace 140, so that the deposition of the charcoal at the bottom of the activation furnace 140 can be reduced on the basis of driving the charcoal to roll. In addition, the gas outlet of the oxidizing gas is provided in the form of a gas outlet hole, which is also beneficial to increase the flow rate of the first gas flow to increase the distance that the charcoal moves in the activation furnace 140.
Optionally, a plurality of first air outlet holes 141 are spaced at the bottom of the activation furnace 140 to drive more charcoal to roll.
In the above embodiment, as shown in fig. 2 and 7, the making the oxidizing gas into the airflow to drive the charcoal to tumble in the activation furnace further includes:
and S42, introducing the oxidizing gas into the activation furnace to form a second gas flow, wherein the second gas flow flows from the bottom of the activation furnace to the top of the activation furnace, and the charcoal has the tendency of moving from the bottom of the activation furnace to the top of the activation furnace under the driving of the second gas flow.
Specifically, the bottom of the activation furnace 140 is further provided with second air outlet holes 142, the second air outlet holes 142 face the top of the activation furnace 140, and the second air outlet holes 142 and the first air outlet holes 141 are alternately arranged in the length direction and the width direction of the activation furnace 140. During the activation of the charcoal, the oxidizing gas may be introduced into the second gas outlet 142, and the gas flow blown out from the second gas outlet 142 is the second gas flow, and the second gas flow flows from the bottom of the activation furnace 140 to the top of the activation furnace 140 based on the orientation of the second gas outlet 142. Because the charcoal has a tendency to move from the bottom of the activation furnace 140 to the top of the activation furnace 140 under the driving of the second air flow, that is, the charcoal cannot be driven to the top of the activation furnace 140 by the second air flow, but the buoyancy provided by the second air flow for the charcoal can counteract the gravity applied to the charcoal, so that the charcoal at the bottom of the activation furnace 140 is more easily driven to the side of the activation furnace 140 by the first air flow.
It can be appreciated that the charcoal at the bottom of the activation furnace 140 can be provided with buoyancy by the second air flow, so that the charcoal can be more easily driven by the first air flow to roll in the activation furnace 140, thereby being beneficial to improving the quality of the activated carbon.
In one embodiment, as shown in fig. 2 and 8, the forming the oxidizing gas into the airflow to drive the charcoal to tumble in the activation furnace 140 further includes:
and S43, introducing the oxidizing gas into the activation furnace to form a third gas flow, wherein the third gas flow flows from the side part of the activation furnace opposite to the first gas flow to the top of the activation furnace in an inclined mode, and the third gas flow drives the charcoal to make an inclined throwing motion from one side part of the activation furnace to the top of the activation furnace in an opening downward mode.
Specifically, the side of the activation furnace 140, to which the first air outlet hole 141 faces, is provided with a third air outlet hole 143, and the third air outlet hole 143 is inclined from the side toward the top of the activation furnace 140. During activation, an oxidizing gas may be introduced into the third gas outlet 143, and a gas flow blown out from the third gas outlet 143 is the third gas flow, and the third gas flow may obliquely flow from the side of the activation furnace 140 to the top of the activation furnace 140 based on the orientation of the third gas outlet 143.
Specifically, after the charcoal flows to the side of the activation furnace 140 by the first air flow, the charcoal contacts the third air flow before the charcoal falls to the bottom of the activation furnace 140, and the charcoal is driven by the third air flow to move upward from the side of the activation furnace 140 to the top of the activation furnace 140. When the charcoal receives a driving force of the third air flow which is not enough to overcome the self gravity, the charcoal falls down to the bottom of the activation furnace 140 under the action of the gravity until the charcoal falls to the bottom of the activation furnace 140. In general, the charcoal will make a downward opening inclined throwing motion under the combined action of the driving force of the third air flow and the gravity.
It can be understood that the movement distance of the charcoal in the activation furnace 140 can be enlarged by the cooperation of the third air flow and the first air flow, thereby being beneficial to increasing the rolling times of the charcoal; in addition, the third airflow can also increase the dead time of the charcoal in the activation furnace 140, so that the time when the whole surface of the charcoal is contacted with the oxidizing gas can be increased, and the charcoal forming quality of the activated carbon can be improved.
It should be noted that after the charcoal driven by the third air flow falls to the bottom of the activation furnace 140, the charcoal is further driven by the first air flow to move to the side of the activation furnace 140, so that the charcoal circulates in the activation furnace 140, and the charcoal is more fully contacted with the oxidizing gas, thereby improving the quality of the charcoal formation of the activated carbon.
In one embodiment, as shown in fig. 3 and 9, the flowing the oxidizing gas to drive the charcoal to tumble in the activation furnace includes:
and S110, introducing the oxidizing gas into the activation furnace to simultaneously form two first air flows, wherein the two first air flows respectively flow to two sides of the activation furnace and do not interfere with each other, and the two first air flows respectively drive two parts of charcoal to move to the two sides of the activation furnace.
Specifically, two sets of first air outlets 141 are disposed at the bottom of the activation furnace 140, the two sets of first air outlets 141 face two sides of the activation furnace 140, and the two sets of first air outlets 141 face opposite to each other, so that when the oxidizing gas is introduced into the two sets of first air outlets 141, two first air flows flowing to the two sides of the activation furnace 140 respectively can be formed, and the two first air flows do not interfere with each other.
Specifically, under the driving of the two first air flows, the charcoal at the bottom of the activation furnace 140 is divided into at least two parts, and the at least two parts of charcoal move to two sides of the activation furnace 140, respectively.
It will be appreciated that the two first air flows can increase the tumbling intensity of the charcoal in the activation furnace 140 to improve the char formation quality of the activated carbon, and can reduce the flow rate of the first air flow to reduce the production cost and minimize the possibility of charcoal breakage during tumbling.
It should be noted that, in the two first gas flows, two sets of second gas outlets 142 may be correspondingly disposed at the bottom of the activation furnace 140, and/or third gas outlets 143 may be disposed at both sides of the activation furnace 140.
Referring to fig. 4 and 10, in an embodiment, the forming the oxidizing gas into the airflow to drive the charcoal to tumble in the activation furnace 140 further includes:
s240, introducing the oxidizing gas into the activation furnace to form a fourth gas flow, wherein the fourth gas flow flows from a feed inlet of the activation furnace to a discharge outlet of the activation furnace.
Specifically, at least one of the front portion (the side where the feeding hole is located), the bottom portion and the top portion of the activation furnace 140 is provided with a fourth air outlet hole 144, and the fourth air outlet hole 144 faces the discharging hole. When the charcoal is activated, the oxidizing gas may be introduced into the fourth air outlet 144, the air flow blown out from the fourth air outlet 144 is the fourth air flow, and the fourth air flow flows toward the discharge hole of the activation furnace 140 based on the orientation of the fourth air outlet 144.
Specifically, during activation, the charcoal is driven by the first airflow and the third airflow and is impacted by the fourth airflow, so that the complexity of the charcoal moving in the activation furnace 140 can be increased, the charcoal is rolled more sufficiently, and the activation effect of the charcoal can be improved.
It can be appreciated that the complexity of the charcoal moving in the activation furnace 140 can be increased by the fourth air flow, so that the charcoal is more thoroughly tumbled, thereby facilitating the activation effect of the charcoal to improve the charcoal forming quality of the activated carbon.
In an embodiment, the fourth flow of gas is generated intermittently.
Specifically, during the activation process, the oxidizing gas may be intermittently supplied to the fourth gas outlet 144 (i.e., the oxidizing gas may be supplied to the fourth gas outlet 144 at every predetermined time interval) to intermittently generate the fourth gas flow.
It will be appreciated that this arrangement reduces the number of times the fourth airflow is generated, thereby advantageously increasing the flow rates of the first, second and third airflows to substantially tumble the charcoal.
In one embodiment, the process for producing wood-based activated carbon further comprises:
and rotating the activation furnace to drive the charcoal to move from the feed inlet to the discharge outlet through a turbine guide plate in the activation furnace.
Specifically, a turbine guide plate (not shown) is disposed on an inner wall of the activation furnace 140, and the turbine guide plate is inclined from a feed inlet to a discharge outlet of the activation furnace 140. During activation, the activation furnace may be rotated to move the charcoal from the inlet to the outlet of the activation furnace 140 under the guidance of the vortex flow guide plate, so as to send out the activated charcoal obtained by activation.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A process for the production of wood-based activated carbon, comprising:
crushing the wood waste into wood meeting the preset size requirement;
dehydrating the timber until the water content of the timber meets the carbonization requirement;
carbonizing the wood to produce charcoal;
after the charcoal is fed into an activation furnace, introducing oxidizing gas into the activation furnace to activate the charcoal to obtain activated carbon; wherein,
during activation, the oxidizing gas is forced into a gas stream to drive the charcoal to tumble in the activation furnace.
2. A process for the production of wood activated carbon as defined in claim 1, wherein said forming an oxidizing gas into a gas stream to drive tumbling of charcoal in said activation furnace comprises:
and introducing oxidizing gas into the activation furnace to form a first gas flow, wherein the first gas flow flows from the bottom of the activation furnace to one side of the activation furnace in an inclined mode, and the first gas flow drives the charcoal to move from the bottom of the activation furnace to one side of the activation furnace.
3. A process for the production of wood activated carbon as defined in claim 1, wherein said forming an oxidizing gas into a gas stream to drive tumbling of charcoal in said activation furnace comprises:
and introducing the oxidizing gas into the activation furnace to simultaneously form two first gas flows which respectively flow to two sides of the activation furnace and do not interfere with each other, and respectively drive two parts of charcoal to move towards the two sides of the activation furnace.
4. A process for the production of wood activated carbon as defined in claim 2 or 3, wherein said forming an oxidizing gas into a gas stream to drive charcoal to tumble in said activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a second gas flow, wherein the second gas flow flows from the bottom of the activation furnace to the top of the activation furnace, and the charcoal has the tendency of moving from the bottom of the activation furnace to the top of the activation furnace under the driving of the second gas flow.
5. A process for the production of wood activated carbon as defined in claim 4, wherein said forming an oxidizing gas into a gas stream to drive charcoal to tumble in said activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a third gas flow, wherein the third gas flow flows to the top of the activation furnace from the side of the activation furnace opposite to the first gas flow in an inclined mode, and the third gas flow drives the charcoal to make an inclined throwing motion from one side of the activation furnace to the top of the activation furnace in an opening downward mode.
6. A process for the production of wood activated carbon as defined in claim 5, wherein said forming an oxidizing gas into a gas stream to drive charcoal to tumble in said activation furnace further comprises:
and introducing the oxidizing gas into the activation furnace to form a fourth gas flow, wherein the fourth gas flow flows from the feed inlet of the activation furnace to the discharge outlet of the activation furnace.
7. The process for producing wood activated carbon as defined in claim 1, further comprising:
and rotating the activation furnace to drive the charcoal to move from the feed inlet to the discharge outlet through a turbine guide plate in the activation furnace.
8. A process for the production of wood activated carbon as defined in claim 1 wherein the wood is dewatered by drying.
9. A wood activated carbon apparatus for producing, comprising:
the wood waste is crushed into wood meeting the preset size requirement;
the drying oven is used for dehydrating the wood until the water content of the wood meets the carbonization requirement;
the carbonization furnace is used for carbonizing the dehydrated wood waste to prepare charcoal;
an activation furnace for activating the charcoal with an oxidizing gas to obtain activated carbon, the oxidizing gas meeting pressure and temperature requirements for activating the charcoal, wherein during the activation process, the oxidizing gas forms a gas flow to drive the charcoal to rotate in the activation furnace.
10. The apparatus for producing wooden activated carbon as claimed in claim 9, wherein the bottom of the activation furnace is provided with two sets of first gas outlet holes which are oppositely directed and respectively obliquely directed to both side portions of the activation furnace, and both side portions of the activation furnace are provided with third gas outlet holes which are obliquely directed to the top of the activation furnace, wherein,
the oxidizing gas can be introduced into the first gas outlet hole to form a first gas flow, and the oxidizing gas can be introduced into the third gas outlet hole to form a third gas flow, wherein the first gas flow can drive the charcoal to move from the bottom of the activation furnace to one side of the activation furnace, and the third gas flow can drive the charcoal to make an inclined throwing motion with a downward opening from one side of the activation furnace to the top of the activation furnace.
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| CN202110464839.0A CN113003570A (en) | 2021-04-28 | 2021-04-28 | Wood activated carbon production process and device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028166A (en) * | 2022-07-19 | 2022-09-09 | 南京裕烨湘环保技术有限公司 | Preparation process of activated carbon |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028166A (en) * | 2022-07-19 | 2022-09-09 | 南京裕烨湘环保技术有限公司 | Preparation process of activated carbon |
| CN115028166B (en) * | 2022-07-19 | 2023-10-31 | 蜂窝活性炭有限公司 | Active carbon preparation process |
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