CN112299414A - Active carbon apparatus for producing and carbomorphism activation integrative stove thereof - Google Patents
Active carbon apparatus for producing and carbomorphism activation integrative stove thereof Download PDFInfo
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- CN112299414A CN112299414A CN201910712446.XA CN201910712446A CN112299414A CN 112299414 A CN112299414 A CN 112299414A CN 201910712446 A CN201910712446 A CN 201910712446A CN 112299414 A CN112299414 A CN 112299414A
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- 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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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The invention discloses an active carbon production device and a carbonization and activation integrated furnace thereof, comprising: the rotary furnace can make the material inside rotate around the axial direction of the converter, the rotary furnace is divided into a carbonization hearth and an activation hearth along the axial direction, and the rotary furnace is provided with an air charging pipe communicated with the carbonization hearth and an outlet flue communicated with the activation hearth and used for discharging tail gas; the connector is used for screening materials discharged from the carbonization chamber and is sleeved at the outlet end of the carbonization chamber and the inlet end of the activation chamber in a sealing manner; the striker plate is provided with a material hole and a vent hole and is arranged at the inlet end of the activation chamber; the feeding bin is communicated with the carbonization chamber, and the discharging bin is communicated with the activation chamber; a steam pipe for heating the material in the activation chamber. Because in this application all accomplish carbomorphism and activation in the rotary furnace, the material directly gets into the activation thorax through the material pore of striker plate in addition, has saved the material in the cooling process of operation in-process and the reheating process behind the reentrant activation furnace, consequently, has higher heat utilization rate.
Description
Technical Field
The invention relates to the technical field of active carbon processing, in particular to an active carbon production device and a carbonization and activation integrated furnace thereof.
Background
The active carbon is an amorphous carbon product with a porous structure, which is prepared by granulating and molding a powdered coal mixed tar, asphalt and other binders, and processing the granules by carbonization, activation and other processes. Because the surface and the inside of the activated carbon have a plurality of structural holes and the specific surface area is very large, the activated carbon has good adsorption capacity on gas, dust, inorganic or organic substances in solution and colloidal particles, and is widely applied to the treatment of industrial pollutants such as wastewater, waste gas and the like.
The active carbon particles prepared from the pulverized coal need to be carbonized and activated by two main processes. The carbonization process is to heat the mixture material made into particles to about 600 ℃ to separate out tar and the like in the mixture material and form a primary strength and a pore structure, and the obtained product is called as a carbonized material. The activation process is to further heat the carbonized material with the preliminary pore structure to the activation temperature of about 800 ℃, and introduce activated gas such as high-temperature steam and the like, so that the water vapor and the carbonized material generate activation reaction, the pores in the carbonized material are further expanded, and finally the activated carbon finished product with developed internal pores and strong adsorption capacity is formed.
In the prior art of activated carbon production, the carbonization process and the activation process are respectively completed in a carbonization furnace and an activation furnace. As shown in figure 1, in the production process, a molding material (a mixture of raw coal, tar and the like) is filled into a hearth from a furnace head of a carbonization furnace 1, and after a carbonization process is completed in the hearth, a finished carbonized material is discharged from a furnace tail of the carbonized material 1. Combustible gas generated in the carbonization process is combusted in the hearth in a sub-combustion mode to supply heat for the carbonization process, air required by combustion is fed from the furnace end, and generated carbonization tail gas is discharged from the furnace tail. And the finished carbonized material is conveyed to the lower part of the activation furnace 2 by the material conveying trolley, the finished carbonized material is filled into a hearth of the activation furnace 2 by a single bucket elevator 3, and after the activation process is finished in the hearth, the finished activated material is finally discharged from the tail part of the activation furnace. The steam required by the activation reaction is fed from the furnace head, and the activated tail gas is discharged from the furnace tail.
By adopting the processing device, secondary heating exists in the process of transferring materials between two mutually independent devices, so that the energy utilization rate of the whole process is not high. Specifically, the final temperature of the material after carbonization in the carbonization furnace 1 is about 600 ℃, and the temperature of the material after carbonization is discharged from the carbonization furnace 1 needs to be reduced to be below 100 ℃ so as to prevent the carbonized material from being burnt when contacting air in the transportation process. The cooled-down carbonized material needs to be reheated to the activation temperature (about 800 ℃) after being fed into the activation furnace 2 to complete the activation process. That is, the material is heated secondarily in the carbonization and activation processes, resulting in a low energy utilization rate of the processes.
In addition, the carbonized material of the activated carbon intermediate product needs to be conveyed to the lower part of the activation furnace from the tail end of the carbonization furnace through a material conveying trolley and then is conveyed into the hearth of the activation furnace 2 through a single-bucket elevator 3. The carbonization material has lower wear resistance at normal temperature, so that part of the carbonization material can be pulverized to form carbonization material powder in the transfer process, the carbonization material with qualified particle size sent into the activation furnace 2 is reduced, and the yield (namely the ratio of yield to raw material quantity) of the activated carbon is lower.
Therefore, how to avoid material operation to improve energy utilization is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a carbonization-activation integrated furnace, which avoids material operation and improves energy utilization. The invention also aims to provide an activated carbon production device with the carbonization-activation integrated furnace.
In order to achieve the purpose, the invention provides the following technical scheme:
a carbonization-activation integrated furnace, comprising:
the rotary furnace can enable the materials in the rotary furnace to rotate around the axis direction of the rotary furnace, the rotary furnace is divided into a carbonization hearth for carrying out a carbonization process and an activation hearth for carrying out an activation process along the axis direction, and the rotary furnace is provided with an air charging pipe communicated with the carbonization hearth and an outlet flue communicated with the activation hearth for discharging tail gas;
the connector is used for screening materials discharged from the carbonization chamber, and the connector is hermetically sleeved at the outlet end of the carbonization chamber and the inlet end of the activation chamber;
the striker plate is provided with a material hole and a vent hole and is arranged at the inlet end of the activation chamber;
the charging bin is communicated with the carbonization hearth, and the discharging bin is communicated with the activation hearth;
a steam pipe for heating the material in the activation chamber.
Preferably, in the carbonization-activation integrated furnace, a product channel is arranged in the activation chamber, one end of the product channel is in sealed communication with the material hole, the other end of the product channel is in sealed communication with the discharge bin, and the steam pipe extends into one end of the product channel, which is far away from the striker plate;
the vent hole is positioned in the center of the striker plate.
Preferably, the carbonization-activation integrated furnace further includes: the driving device is used for driving the product channel to rotate and the driving transmission device is used for driving the carbonization chamber to rotate;
the driving device includes: the rotatable central shaft is arranged in the activation chamber, and the product channel is fixedly connected with the central shaft; and the driving piece drives the central shaft to rotate.
Preferably, in the above carbonization-activation integrated furnace, the connector includes:
one end of the connector main body is sleeved outside the outlet end of the carbonization chamber in a sealing manner, and the other end of the connector main body is sleeved outside the inlet end of the activation chamber in a sealing manner;
a screening grid located inside the connector body and capable of communicating the charring chamber and the activation chamber;
a blower device for blowing air to the screening grid.
Preferably, in the carbonization-activation integrated furnace, the connector main body includes: the connector top cover is an arc-shaped plate, and the connector top cover is in dynamic and static sealing connection with the outer sides of the carbonization chamber and the activation chamber;
the connector end cover, the connector end cover is the U template, just the connector end cover with the carbomorphism thorax with the activation thorax outside is sound sealed, the connector end cover with the sealed connection of dismantling of connector overhead guard.
Preferably, in the above carbonization-activation integrated furnace, the air blowing device includes: the air box is mounted at one end, far away from the connector top cover, of the connector bottom cover, and the air box and the screening grids are arranged oppositely;
the inlet end of the air cap is communicated with the air box, and the outlet end of the air cap is opposite to the screening grids;
and the air pipe is used for refluxing the gas in the outlet flue to the air box, one end of the air pipe is communicated with the air box, and the other end of the air pipe is communicated with the outlet flue.
Preferably, in the carbonization-activation integrated furnace, the air charging pipe is provided with an air charging valve for controlling the on-off of the air charging pipe; the outlet flue is provided with an exhaust fan for exhausting air;
and the air pipe is provided with a backflow fan for making the gas discharged from the outlet flue flow back to the connector and a backflow valve for controlling the on-off of the air pipe.
Preferably, the carbonization-activation integrated furnace further includes: the carbonization chamber temperature measuring instrument is arranged in the carbonization chamber and is used for detecting the temperature of the flue gas in the carbonization chamber; and the activation chamber temperature measuring instrument is arranged in the activation chamber and is used for detecting the temperature of the smoke in the activation chamber.
The active carbon production device is characterized by comprising any one of the carbonization and activation integrated furnace, wherein the rotary furnace is obliquely arranged on a workbench, and the height of the carbonization hearth is higher than that of the activation hearth.
Preferably, in the above activated carbon production apparatus, an inclination angle of the rotary kiln and the work table is 5 ° to 10 °.
According to the technical scheme, in the production process of the carbonization-activation integrated furnace disclosed by the invention, materials are conveyed into the carbonization hearth from the feeding bin, and carbonization is completed in the carbonization hearth. The carbonized material enters the activation chamber through the material holes on the material baffle after being screened by the connector and reacts with the high-temperature steam entering through the steam pipe to complete the activation process. And discharging the activated material from the discharging bin. Because in this application all accomplish carbomorphism and activation in the rotary furnace, the material directly gets into the activation thorax through the material pore of striker plate in addition, has saved the material in the cooling process of operation in-process and the reheating process behind the reentrant activation furnace, consequently, has higher heat utilization rate.
In addition, the carbonized material directly enters the activation chamber through the baffle plate, so that the running of the carbonized material at normal temperature is omitted, the abrasion and pulverization loss of the material in the running process are avoided, and the product yield is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the construction of a carbonization device and an activation device as disclosed in the prior art;
FIG. 2 is a schematic structural diagram of a carbonization-activation integrated furnace disclosed in an embodiment of the invention;
FIG. 3 is a front cross-sectional view of a connector disclosed in an embodiment of the present invention;
FIG. 4 is another schematic structural diagram of the carbonization-activation integrated furnace disclosed in the embodiment of the invention.
Detailed Description
In view of the above, the core of the invention is to disclose a carbonization-activation integrated furnace, which avoids material operation and improves energy utilization rate. The other core of the invention is to disclose an active carbon production device with the carbonization-activation integrated furnace.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in figures 2-4, the invention discloses a carbonization-activation integrated furnace, which comprises a rotary furnace 03, a connector 14, a material baffle plate 04, a discharge bin 10, a feeding bin 01 and a steam pipe 08. Wherein, the rotary furnace 03 can make the material inside rotate around the axis direction of the rotary furnace 03, and the rotary furnace 03 is divided into a carbonization chamber for performing the carbonization process and an activation chamber for performing the activation process along the axis direction. In addition, the rotary kiln 03 has an air charging pipe 11 communicating with the carbonization chamber and an outlet flue 09 communicating with the activation chamber for discharging the off-gas. The air mixing pipe 11 can make air enter the carbonization chamber to realize the combustion and heat release of combustible gas generated by the reaction of the air and the carbonization process during the carbonization reaction, thereby heating the carbonization process. In practice, the air mixing pipe 11 is located at the end of the carbonization chamber far away from the activation chamber, and the outlet flue 09 is located at the end of the activation chamber far away from the carbonization chamber, and in actual work, the tail gas flows from the carbonization chamber to the activation chamber and is finally discharged from the outlet flue 09.
The connector 14 is used for screening the material discharged from the carbonization chamber to obtain the required large-particle material. Specifically, the connector 14 is hermetically sleeved at the outlet end of the carbonization chamber and the inlet end of the activation chamber and is used for communicating the carbonization chamber with the activation chamber. The striker plate 04 is provided with a material hole and an air vent, and the striker plate 04 is arranged at the inlet end of the activation chamber, so that on one hand, the striker plate 04 realizes the sealing of the end part of the activation chamber and can realize the entering of the material through the material hole, and the tail gas of the carbonization chamber enters through the air vent. The discharging bin 10 is communicated with the activation hearth to discharge the activated materials, the feeding bin 01 is communicated with the carbonization hearth to heat the materials to be carbonized, and particularly, the feeding bin 01 is a feeding hopper, and one end of the feeding bin penetrates through a furnace cover 02 of the rotary furnace 03 to extend into the carbonization hearth. The steam pipe 08 is communicated with the activation chamber to supply heat to the materials in the activation chamber and ensure that the activation process is completed in the activation chamber.
In the production process, the material is fed into the carbonization hearth from the feeding bin 01, and carbonization is completed in the carbonization hearth. And then the carbonized material enters the connector 14, and is discharged into the activation chamber through the connector 14, specifically, the carbonized material enters the activation chamber through the material holes on the baffle plate 04 and reacts with the high-temperature steam entering through the steam pipe 08 to complete the activation process. The material which has completed activation is discharged from the discharge bin 10. Because in this application all accomplish carbomorphism and activation in the rotary furnace 03 through connector 14 connection, the material directly gets into the activation thorax through the material hole of striker plate 04 moreover, has saved the material in the cooling process of operation in-process and the reheating process behind the reentrant activation furnace, consequently, has higher heat utilization rate.
In addition, the carbonized material directly enters the activation chamber through the baffle plate 04, so that the running of the carbonized material at normal temperature is omitted, the abrasion and pulverization loss of the material in the running process are avoided, and the product yield is higher.
In a specific embodiment, the material hole of the striker plate 04 is a tapered hole gradually reduced from the carbonization chamber to the activation chamber. By adopting the conical holes, on one hand, the material can be guided, and on the other hand, the amount of the material entering the activation chamber in unit time can be reduced, so that the material entering the activation chamber can be fully reacted, and the product yield can be improved. The shape and size of the material holes can be selected according to actual needs and are all within the protection range.
In a further embodiment, the activation chamber is provided with a product channel 06, one end of the product channel 06 is in sealed communication with the material hole, and the other end of the product channel 06 is in sealed communication with the discharging bin 10, and specifically, the product channel 06 and the rotary kiln 03 are sealed by a sealing plate 07 to form a sealed channel. The steam pipe 08 extends into one end of the product channel 06 far away from the baffle plate, and the baffle plate 04 is provided with a vent hole for communicating the carbonization chamber with the activation chamber. During operation, carbonized materials directly enter the product channel 06 through the material holes of the baffle plate 04 and react with high-temperature steam of the steam pipe 08 extending into the product channel 06, high-temperature carbonized tail gas generated in the carbonization chamber enters the activation chamber through the vent holes of the baffle plate 04, and the high-temperature carbonized tail gas and activated gas separated out in the activation process are pumped into the activation chamber from the central circular hole of the baffle plate 04 together, and are combusted in the part of the activation chamber to supply heat for the activation process. The generated activated tail gas is discharged out of the rotary kiln 03 through an outlet flue 09. The carbonized material completes the activation reaction in the product channel 06, the whole process is not directly contacted with the high-temperature flue gas, the combustion of the activated gas also occurs in the rotary furnace outside the product channel 06, namely, the activation process adopts an external heating type, thereby completely avoiding the burning loss of the carbonized material and effectively improving the yield of the activation process. In addition, steam is sent into from activation furnace afterbody, and is opposite with the flow direction of material promptly, and here material temperature is the highest, and steam and high temperature material direct contact have higher activation efficiency, also can avoid steam to meet cold material and form the condensation, worsen the gas permeability in the product way.
In a specific embodiment, the product channel 06 is a steel pipe, a plurality of product channels are arranged in the rotary kiln 03 and are uniformly arranged along the circumferential direction of the rotary kiln 03, and the vent holes are located in the center of the striker plate 04. Here, an arrangement of the product channels 06 is disclosed, which is designed such that the carbonized material can continuously enter the product channel 06 at the bottom during the rotation of the rotary kiln 03, and all the product channels 06 can be filled with the carbonized material when the rotary kiln 03 rotates one revolution. The number of product channels 06 and the diameter of the product channels 06 can be selected according to different requirements. In addition, the vent hole is arranged at the center, so that the carbonization tail gas can uniformly supply heat to the periphery when being combusted in the activation chamber, and the temperature of the peripheral product channel 06 is approximately the same.
In order to realize that the rotary furnace 03 rotates the material inside around the axis direction of the rotary furnace, the carbonization-activation integrated furnace disclosed in the application further comprises a driving transmission device for driving the carbonization hearth of the rotary furnace 03 to rotate and a driving device for driving the product channel to rotate. Specifically, the drive transmission device includes: a driving motor and a transmission device 05 connected with the driving motor, wherein the transmission device 05 is connected with the shell of the carbonization hearth, and the rotary furnace is rotated by the work of the driving motor. Preferably, the transmission device 05 can be set as a gear transmission part, the output end of the driving motor is provided with a driving wheel, the shell of the carbonization chamber is sleeved with a driven wheel, and the driving wheel and the driven wheel are in meshing transmission. Only one specific drive transmission device is disclosed, and in practice, the device can be reasonably arranged according to the requirement of the rotating speed and is in a protection range. The driving device comprises a central shaft 19 and a driving piece, wherein the central shaft 19 can be arranged in the activation chamber in a rotating mode around the axis, the central shaft 19 is fixedly connected with the product channel 06, the central shaft 19 penetrates through the material baffle 04 and the outlet flue 09, and is driven to rotate through the driving piece, so that the central shaft 19 rotates, the product channel 06 is driven to rotate, and the material baffle 04 is driven to rotate simultaneously due to the fact that the product channel 06 is connected with the material baffle 04. Specifically, the central shaft 19 is rotatably and hermetically installed at the end of the outlet flue 09, and an opening of the outlet flue 09 may be opened at a side wall of the outlet flue 09 to ensure that the central shaft 19 is fixed.
In practice, the central shaft 19 can be fixedly connected with the striker plate 04, and the striker plate 04 is fixedly connected with the product channel 06, so that the central shaft 19 drives the striker plate 04 to rotate to realize the rotation of the product channel 06. In order to reduce the cost, it is preferable that the driving member and the driving motor are the same component, that is, the same motor is used for driving the carbonization chamber to rotate and the product channel to rotate. The scheme saves the power consumption required for driving the activation chamber shell, thereby saving more energy.
In practice, the rotation of the material can also be realized by driving the rotary furnace 03 to make the carbonization hearth and the activation hearth rotate. Thus, only one set of device for driving the rotary furnace 03 to rotate can be arranged. Specifically, the connector 14 includes a connector body, a screening grid 144 and a blower device. Wherein, one end of the connector main body is hermetically sleeved outside the outlet end of the carbonization hearth, the other end of the connector main body is hermetically sleeved outside the inlet end of the activation hearth, and the connector main body is used as a main outer shell of the connector 14 and is connected with the carbonization-activation integrated furnace to form an outer shell part of the whole integrated furnace. The screening grid 144 is positioned in the connector main body and can be communicated with the carbonization chamber and the activation chamber, high-temperature carbonized materials generated by the carbonization chamber firstly fall on the screening grid 144 in the connector, and enter the activation chamber after being screened by the screening grid 144. The screening of the screening grid 144 is achieved by means of a blowing device. Specifically, the blowing device blows air to the screening grid 144 to blow the pulverized powder in the high-temperature carbonized material to the middle part of the connector 14, so that the pulverized material is far away from the inlet of the product channel 06 and finally flows into the flue gas channel of the activation chamber along with the air flow, and the screened large-particle carbonized material falls into the product channel of the activation chamber under the action of gravity to complete the separation of the pulverized material and the particle material in the carbonized material. Through set up connector 14 between carbomorphism thorax and activation thorax in this application to the separation of material and granule material is carried out to the charring material of carbomorphism thorax to the realization, in the flue gas channel of pulverization material entering activation thorax, prevent that the material that pulverizes from blockking up the product way.
The connector body in the preferred embodiment includes a connector top cover 141 and a connector bottom cover 142. Wherein, connector overhead guard 141 is the arc to connector overhead guard 141 and carbomorphism thorax and activation thorax outside are the sound sealing connection, and specifically, the cover that one end relatively rotated is established in the carbomorphism thorax outside, and the other end seal cover is established in the activation thorax outside. The connector bottom cover 142 is a U-shaped plate, the connector bottom cover 142 is in dynamic and static sealing connection with the outer sides of the carbonization chamber and the activation chamber, specifically, one end of the connector bottom cover is sleeved on the outer side of the carbonization chamber in a relative rotating mode, and the other end of the connector bottom cover is sleeved on the outer side of the activation chamber in a sealing mode. Further, both side walls of the connector bottom cover 142 are sealingly detachably connected with both end portions of the connector top cover 141, respectively, to form a completed connector main body.
The provision of a U-shaped plate may facilitate the support of the connector body, i.e. when mounted, with the horizontal section of the U-shaped plate as the mounting surface to support the entire connector 14. The connector top cover 141 and the connector bottom cover 142 are rotatably sleeved with the carbonization chamber, so that the connector main body does not rotate when the carbonization chamber rotates. The connector top cover 141 and the connector bottom cover 142 are rotatably arranged with respect to the activation chamber, and are also fixedly arranged with respect to each other, and the product channel 06 rotates when the connector top cover and the connector bottom cover are fixedly arranged with respect to each other.
In practice, the connector body may be connected to the charring chamber and the activation chamber by a sleeve and sealed by a dynamic and static seal, such as a sealing ring, which is capable of moving relative to the connector body. The connector body is provided as a non-rotating member, so that power loss can be reduced. In addition, set up the connector main part into two parts of can dismantling, convenient to detach and installation, the convenience is cleared up inside. When installed, it is preferred to ensure that the axis of the connector dome 141 coincides with the axis of the charring chamber.
Namely, the connector is arranged to separate the rotation of the carbonization chamber and the activation chamber, and the carbonization yield and the activation yield are matched by respectively adjusting the rotation speed of the carbonization chamber and the activation chamber. Specifically, when the carbonization yield is greater than the activation yield, the rotation speed of the carbonization chamber is reduced, and the rotation speed of the activation chamber is increased at the same time until the carbonization rate is matched with the activation rate, and vice versa.
On the basis of the above technical scheme, the screening grid 144 is an arc-shaped plate with two ends connected to two side walls of the connector bottom cover 142, and the screening grid 144 and the carbonization chambers are concentrically arranged, that is, the screening grid 144 protrudes towards the horizontal section of the connector bottom cover 142, and the size of the arc-shaped plate can ensure that the carbonized material discharged from the carbonization chambers can completely fall on the screening grid 144. Further, the above-described air blowing device is located at a horizontal section of the connector bottom cover 142 and opposite to the sieving grid 144. In operation, the char material falls under gravity onto the screen grid 144 and is lifted by the air from the blower. Since the connector body is not rotated, it is preferable that the sieving grid 144 and the air blowing device are both disposed below the outlet of the carbonization chamber in the gravity direction.
In a specific embodiment, the above-described blowing device includes a wind box 143, a wind cap 145, and a wind pipe 146, wherein the wind box 143 is disposed opposite to the sieving grid 144, and an inlet end of the wind cap 145 communicates with the wind box 143 and an outlet end of the wind cap 145 is opposite to the sieving grid 144; the air duct 146 is connected to the air box 143, and the other end of the air duct 146 is connected to the outlet flue 09. When the device works, part of gas discharged from the outlet flue 09 is discharged into the air box 143 through the air pipe 146, and the gas is discharged through the air cap 145 to blow the pulverized material on the sieving grid 144, so that the separation of the pulverized material and the granular material is realized. The gas from the outlet flue 09 is returned to the wind box 143, thereby realizing the recycling of the waste gas. Preferably, the gas exhausted from the hood 145 can blow the pulverized material to reach the height of the vent hole on the striker plate 04, so that the pulverized material enters the flue gas channel of the activation chamber along with the tail gas flow, and preferably, the vent hole is positioned in the center of the striker plate 04.
The funnel cap 145 in the present application is a tapered channel tapering from the inlet end to the outlet end, so arranged that the wind speed of the gas exiting from the funnel cap 145 can be increased to ensure that the pulverized material can be blown up. The size and number of the hoods 145 are required to be set in combination with the speed of the wind to be circulated and the amount of the pulverized materials, and will not be described in detail.
The wind caps 145 are multiple and uniformly arranged on the horizontal section of the connector bottom cover 142 to ensure that the wind force applied to all parts of the sieving grid 144 is the same, and the sieving quality is ensured. In a further embodiment, the height of the hood 145 gradually decreases from the end of the screening grid 144 toward the middle of the screening grid 144. Since the end of the sieve grid 144 is spaced from the horizontal portion of the connector bottom housing 142 by a greater distance than the middle of the sieve grid 144 from the horizontal portion of the connector bottom housing 142, the amount of air flow through the end of the sieve grid 144 needs to be increased to ensure that all material on the sieve grid 144 is blown up.
The carbonization-activation integrated furnace disclosed in the application further comprises an air charging valve 12 which is arranged on the air charging pipe 11 and used for controlling the on-off of the air charging pipe 11, and an exhaust fan 13 used for exhausting air is arranged at the outlet flue 09, so that the gas in the carbonization-activation integrated furnace can be discharged from the carbonization chamber through the activation chamber quickly. In addition, a return fan 15 for returning the gas discharged from the outlet flue 09 to the connector 14 and a return valve 16 for controlling the on/off of the air pipe 146 are also arranged on the air pipe 146. The exhaust fan 13 draws air outwards to enable the whole hearth to be in a negative pressure state, and the exhaust fan has the other function of extracting activated gas in the product channel to ensure smooth airflow in the product channel.
Air enters the carbonization chamber through the air charging pipe 11, and is combusted with combustible gas generated in the carbonization process to release heat, so that heat is released in the carbonization process. The generated high-temperature carbonization tail gas and the activated gas separated out in the activation process are pumped into the activation chamber from the central hole of the striker plate 04 and are partially combusted in the activation chamber to supply heat for the activation process. The generated activated tail gas is discharged out of the integrated furnace through an outlet flue 09. The temperature of the carbonization chamber and the activation chamber is adjusted by the rotating speed of the exhaust fan 13 and the opening of the air charging valve 12, so that the stable production of the active carbon is realized. The different air volumes provided to the sieving grid 144 are realized by the driving of the return fan 15 and the opening degree of the return valve 16.
Specifically, the air charging pipe 11 is communicated with one end of the carbonization hearth far away from the activation hearth, the outlet flue 09 is communicated with one end of the activation hearth far away from the carbonization hearth, and the steam pipe 08 extends into one end of the product channel 06 far away from the baffle plate 04. The arrangement provides a specific heating and air flow arrangement mode, and the specific carbonization process adopts an internal heating type, namely, the material in the carbonization chamber is contacted with gas for heating; the air flow in the carbonization process adopts concurrent flow, namely the air flow direction is the same as the material flow direction; the activation process adopts an external heating type, namely, the external side of the product channel 06 is heated; the air flow of the activation process adopts counter flow, namely high-temperature steam enters the product channel 06 through the bottom of the product channel 06, is opposite to the flow direction of the material, passes through the material hole of the baffle plate 04 and then enters the activation chamber along with the gas entering the gas hole of the baffle plate 40, so that the integration of the carbonization and activation device is realized.
In addition, the activation reaction of the carbonized material takes place in the product channel 06 with the section diameter smaller than that of the rotary furnace 03, high-temperature steam can directly penetrate through the material layer under the suction action of the exhaust fan 13 and can enter the activation chamber through the central hole, and the steam is uniformly distributed on the circular section of the product channel 06, so that the carbonized material filling rate of the single product channel 06 can be greatly and fully reacted, the material filling rate of the rotary furnace 03 is improved, and the capacity of single equipment is increased.
In a further embodiment, the carbonization-activation integrated furnace further comprises a carbonization hearth temperature measuring instrument 17 which is arranged in the carbonization hearth and used for detecting the temperature of the flue gas in the carbonization hearth; an activation chamber temperature measuring instrument 18 arranged in the activation chamber and used for detecting the temperature of the smoke in the activation chamber. The device is used for monitoring the flue gas temperature in the carbonization hearth and the activation hearth and ensuring the carbonization and activation process to be carried out smoothly. In practice, when the temperature detector 17 of the carbonization chamber detects that the temperature of the flue gas in the carbonization chamber is lower than the preset temperature, the opening of the air charging valve 12 is increased and the rotation speed of the exhaust fan 13 is reduced, and when the temperature detector 17 detects that the temperature of the flue gas in the carbonization chamber is higher than the preset temperature, the opening of the air charging valve 12 is reduced and the rotation speed of the exhaust fan 13 is increased. The principle of the activation-chamber thermometer 18 is the same as that of the carbonization-chamber thermometer 17.
In addition, this application still discloses an active carbon apparatus for producing, include the integrative stove of carbonization activation as disclosed in above-mentioned embodiment, consequently, the active carbon apparatus for producing that has this integrative stove of carbonization activation also has the effect disclosed in above-mentioned embodiment, and the no longer repeated description is given here.
Specifically, the rotary kiln 03 disclosed in this application is arranged for the workstation slope when the installation to the height that highly is higher than the activation thorax of carbomorphism thorax is in order to guarantee that at rotary kiln 03 rotation in-process, the carbomorphism material in the carbomorphism thorax can get into the activation thorax under the effect of gravity in, under the prerequisite that does not increase the cost, improves working effect. The inclination angle between the rotary furnace 03 and the workbench is preferably 5-10 degrees, preferably 6 degrees, and the selection of the inclination angle needs to ensure that the carbonized material can smoothly enter the product channel 06 at a required speed. In practice, the selection can be carried out according to different requirements and is within the protection range.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A carbonization-activation integrated furnace is characterized by comprising:
the rotary furnace (03) can enable the materials inside to rotate around the axis direction of the rotary furnace (03), the rotary furnace (03) is divided into a carbonization chamber for carrying out a carbonization process and an activation chamber for carrying out an activation process along the axis direction, and the rotary furnace (03) is provided with an air charging pipe (11) communicated with the carbonization chamber and an outlet flue (09) communicated with the activation chamber and used for discharging tail gas;
the connector (14) is used for screening materials discharged from the carbonization chamber, and the connector (14) is sleeved at the outlet end of the carbonization chamber and the inlet end of the activation chamber in a sealing manner;
the striker plate (04) is provided with a material hole and a vent hole, and the striker plate (04) is arranged at the inlet end of the activation chamber;
the carbonization hearth is characterized by comprising a discharge bin (10) and a feeding bin (01), wherein the feeding bin (01) is communicated with the carbonization hearth, and the discharge bin (10) is communicated with the activation hearth;
a steam pipe (08) for heating the material in the activation chamber.
2. A carbonization-activation integrated furnace as claimed in claim 1, wherein a product channel (06) is provided in the activation chamber, one end of the product channel (06) is in sealed communication with the material hole, the other end of the product channel (06) is in sealed communication with the discharge bin (10), and the steam pipe (08) extends into one end of the product channel (06) far away from the striker plate (04);
the vent hole is positioned in the center of the striker plate (04).
3. A carbonization-activation integrated furnace as defined in claim 2, further comprising: the driving device is used for driving the product channel (06) to rotate and the driving transmission device is used for driving the carbonization chamber to rotate;
the driving device includes: a rotatable central shaft (19) disposed within the activation chamber, the product conduit (06) being fixedly connected to the central shaft (19); and the driving piece drives the central shaft (19) to rotate.
4. A carbonization-activation integrated furnace according to claim 1, characterized in that the connector (14) comprises:
one end of the connector main body is sleeved outside the outlet end of the carbonization chamber in a sealing manner, and the other end of the connector main body is sleeved outside the inlet end of the activation chamber in a sealing manner;
a screening grid (144), said screening grid (144) located inside said connector body and capable of communicating said charring chamber and said activation chamber;
a blowing device for blowing air to the screening grid (144).
5. A carbonization-activation integrated furnace as claimed in claim 4, wherein the connector body comprises: the connector top cover (141), the connector top cover (141) is an arc-shaped plate, and the connector top cover (141) is in dynamic and static sealing connection with the outer sides of the carbonization chamber and the activation chamber;
connector end cover (142), connector end cover (142) are the U template, just connector end cover (142) with the carbomorphism thorax with the activation thorax outside is the sound seal, connector end cover (142) with connector top cover (141) sealed detachable connection.
6. A carbonization-activation integrated furnace as claimed in claim 5, wherein the air blowing device comprises: a bellows (143), the bellows (143) being mounted at an end of the connector bottom cover (142) remote from the connector top cover (141), the bellows (143) being disposed opposite the sieving grid (144);
a hood (145), an inlet end of the hood (145) communicating with the windbox (143), an outlet end of the hood (145) being opposite the screening grid (144);
and the air pipe (146) is used for returning the gas of the outlet flue (09) to the air box (143), one end of the air pipe (146) is communicated with the air box (143), and the other end of the air pipe (146) is communicated with the outlet flue (09).
7. A carbonization and activation integrated furnace as claimed in claim 6, wherein the air charging pipe (11) is provided with an air charging valve (12) for controlling the on-off of the air charging pipe (11); the outlet flue (09) is provided with an exhaust fan (13) for exhausting air;
and the air pipe (146) is provided with a return fan (15) for returning the gas exhausted from the outlet flue (09) to the connector (14) and a return valve (16) for controlling the on-off of the air pipe (146).
8. A carbonization-activation integrated furnace according to any one of claims 1 to 7, further comprising: a carbonization chamber temperature measuring instrument (17) which is arranged in the carbonization chamber and is used for detecting the temperature of the smoke in the carbonization chamber; an activation bore temperature measuring instrument (18) arranged in the activation bore and used for detecting the temperature of the smoke in the activation bore.
9. An activated carbon production device, characterized by comprising the carbonization-activation integrated furnace as claimed in any one of claims 1 to 7, wherein the rotary furnace (03) is obliquely installed on a worktable, and the height of the carbonization chamber is higher than that of the activation chamber.
10. The activated carbon production plant according to claim 9, characterized in that the angle of inclination of the rotary kiln (03) to the work bench is 5 ° -10 °.
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| CN112299414B (en) | 2022-08-16 |
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