CN215766534U - Tail gas waste heat recycling device of active carbon carbonization furnace - Google Patents
Tail gas waste heat recycling device of active carbon carbonization furnace Download PDFInfo
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- CN215766534U CN215766534U CN202121728056.0U CN202121728056U CN215766534U CN 215766534 U CN215766534 U CN 215766534U CN 202121728056 U CN202121728056 U CN 202121728056U CN 215766534 U CN215766534 U CN 215766534U
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- flue gas
- waste heat
- carbonization furnace
- tail gas
- ignition
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract 16
- 239000007789 gas Substances 0.000 title claims abstract 15
- 239000002918 waste heat Substances 0.000 title claims abstract 11
- 229910052799 carbon Inorganic materials 0.000 title claims abstract 4
- 238000003763 carbonization Methods 0.000 title claims 8
- 238000004064 recycling Methods 0.000 title claims 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract 16
- 239000003546 flue gas Substances 0.000 claims abstract 16
- 238000005235 decoking Methods 0.000 claims abstract 4
- 239000000428 dust Substances 0.000 claims abstract 3
- 238000011084 recovery Methods 0.000 claims abstract 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000011449 brick Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The application discloses active carbon carbomorphism stove tail gas waste heat recovery utilizes device, the first flue gas pipeline of tail gas (combustible flue gas) accessible that produces among the retort operation process enters into the decoking pond and carries out the dust fall and handles, the high temperature resistant high pressure positive blower of partly combustible flue gas accessible after the dust fall is handled is through the second, third flue gas pipeline leads to among the ignition, carry behind igniting combustible flue gas and the air mixing ignition to leading incineration chamber through ignition, the flue gas after burning forms high temperature heat energy entering regenerator so that further burn the insufficient flue gas of burning, high temperature heat energy in the regenerator can return the retort and participate in the carbomorphism, can realize the recycle to partly flue gas, improve flue gas heat utilization, realize environmental protection production and active carbon production low energy consumption. And the other part of the flue gas after the dust-settling treatment can enter a rear incineration chamber for heat exchange treatment and then is discharged.
Description
Technical Field
The application relates to the field of activated carbon production and processing, in particular to a tail gas waste heat recycling device of an activated carbon carbonization furnace.
Background
In the production process of coal-based activated carbon, carbonization is one of the main heat treatment processes, most of non-carbon elements, namely hydrogen and oxygen, are firstly removed in a gas form due to pyrolysis of raw materials in the carbonization process, and the released element carbon atoms are combined into an ordered crystal product which is generally called basic graphite microcrystal.
When the carbonization furnace is used for carbonizing materials, the materials are generally required to be ignited and dried to 1000-1200 ℃ by natural gas in an incineration chamber, and then a high-temperature heat source and smoke are introduced into the carbonization furnace through an induced draft fan, so that the carbonization furnace forms a temperature gradient from a furnace head to a furnace tail to meet the requirements of a carbonization process.
SUMMERY OF THE UTILITY MODEL
The application provides an active carbon carbomorphism stove tail gas waste heat recovery utilizes device has solved among the prior art and is utilizing the retort to carry out the in-process of carbonization to the material, and flue gas heat utilization rate is low, and has the problem that gas wasting of resources and active carbon production energy consumption are high.
In order to solve the technical problem, the application provides an active carbon carbomorphism stove tail gas waste heat recovery utilizes device, includes:
the decoking pond of deposit room lower part export intercommunication through first flue gas pipeline and retort, decoking pond exit has rearmounted incineration chamber through the connecting tube intercommunication, decoking pond exit has high temperature resistant high pressure positive blower through second flue gas pipeline intercommunication, the exit of high temperature resistant high pressure positive blower has ignition through third flue gas pipeline intercommunication, one side of ignition is provided with leading incineration chamber, one side intercommunication of leading incineration chamber is provided with the regenerator, the regenerator with the retort intercommunication, the retort is close to the one end downside of regenerator is provided with the discharging pipe, the upside slope of deposit room is provided with the inlet pipe.
Preferably, the second flue gas pipeline is further provided with an explosion-proof valve, and the third flue gas pipeline is further provided with a gas check valve.
Preferably, the inner side wall of the heat storage chamber is also provided with porous checker bricks.
Preferably, the ignition device comprises an ignition assembly, a gas mixing chamber communicated with the third flue gas pipeline and a spiral fan, the gas mixing chamber is communicated with the front incineration chamber, the spiral fan is arranged between the gas mixing chamber and the front incineration chamber, and the ignition assembly is arranged outside the gas mixing chamber.
Preferably, the carbonization furnace is supported and fixed by a support base.
Preferably, the joint of the front incineration chamber and the ignition device is also communicated with an oxygen supply fan.
Preferably, the exit intercommunication of rearmounted incineration chamber is provided with exhaust-heat boiler, the intercommunication is provided with the draught fan on exhaust pipe of exhaust-heat boiler, the exit intercommunication of draught fan is provided with the wet flue gas desulfurization tower, the exit intercommunication of wet flue gas desulfurization tower is provided with wet electric dust collector.
Compared with the prior art, the application provides an active carbon carbomorphism stove tail gas waste heat recovery utilizes device, include the decoking pond through the deposit room lower part export intercommunication of first flue gas pipeline and retort, decoking pond exit has rearmounted incineration chamber through the connecting tube intercommunication, decoking pond exit has high temperature resistant high pressure positive blower through second flue gas pipeline intercommunication, high temperature resistant high pressure positive blower's exit has ignition through third flue gas pipeline intercommunication, one side of ignition is provided with leading incineration chamber, one side intercommunication of leading incineration chamber is provided with the regenerator, regenerator and retort intercommunication, the one end downside that the retort is close to the regenerator is provided with the discharging pipe, the upside slope of deposit chamber is provided with the inlet pipe.
Therefore, when the device is applied to actual use, tail gas (combustible flue gas) generated in the running process of the carbonization furnace can enter the decoking pool through the first flue gas pipeline, dust in the flue gas is subjected to dust fall treatment through a decoking pool, part of combustible flue gas after dust fall treatment can be introduced into an ignition device through a high temperature and high pressure resistant fan through a second flue gas pipeline and a third flue gas pipeline, combustible flue gas and air are mixed and ignited by an ignition device and then are conveyed to a preposed incineration chamber for incineration, the incinerated flue gas forms high-temperature heat energy to enter a regenerative chamber so as to further incinerate the insufficiently combusted flue gas, the high-temperature heat energy in the regenerative chamber can return to a carbonization furnace to participate in carbonization, can realize recycling of a part of flue gas, improve the utilization rate of flue gas heat, reduce the use of fuel gas, and realize environment-friendly production and low energy consumption of activated carbon production. And the other part of the flue gas after the dust-settling treatment can enter the rear incineration chamber through a connecting pipeline for heat exchange treatment and then is discharged.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.
Fig. 1 is a schematic structural diagram of a device for recycling waste heat of tail gas of an activated carbon carbonization furnace according to an embodiment of the present invention;
fig. 2 is a schematic sectional structure view of an active carbon carbonization furnace tail gas waste heat recovery and utilization device provided in an embodiment of the present invention;
FIG. 3 is a schematic view of a connection structure of a second flue gas duct, a high temperature and high pressure resistant fan and a decoking tank according to an embodiment of the present invention;
in the figure, 1 a carbonization furnace, 2 a decoking pool, 3 a high-temperature and high-pressure resistant fan, 4 an ignition device, 5 an explosion-proof valve, 6 a gas check valve, 7 a settling chamber, 8 a feeding pipe, 9 a discharging pipe, 10 a regenerative chamber, 11 a front incineration chamber, 12 a first flue gas pipeline, 13 a second flue gas pipeline, 14 a third flue gas pipeline and 15 a supporting base.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.
The core of this application is to provide an active carbon carbomorphism stove tail gas waste heat recovery utilizes device, can solve among the prior art and utilizing the retort to carry out the in-process of carbonization to the material, flue gas heat utilization rate is low, and has the problem that gas wasting of resources and active carbon production energy consumption are high.
Fig. 1 is a schematic structural diagram of a device for recycling waste heat of tail gas of an activated carbon carbonization furnace according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a cross section of the device for recycling waste heat of tail gas of an activated carbon carbonization furnace according to an embodiment of the present invention, fig. 3 is a schematic structural diagram of a connection between a second flue gas pipeline, a high temperature and high pressure resistant fan, and a decoking tank according to an embodiment of the present invention, as shown in fig. 1 to 3, the device includes:
decoking pond 2 through 7 lower part exports of deposit room of first flue gas pipeline 12 and retort 1 intercommunication, decoking pond 2 exit has rearmounted incineration chamber through the connecting tube intercommunication, decoking pond 2 exit has high temperature and high pressure resistant fan 3 through second flue gas pipeline 13 intercommunication, high temperature and high pressure resistant fan 3's exit has ignition device 4 through third flue gas pipeline 14 intercommunication, one side of ignition device 4 is provided with leading incineration chamber 11, one side intercommunication of leading incineration chamber 11 is provided with regenerator 10, regenerator 10 and retort 1 intercommunication, retort 1 is close to the one end downside of regenerator 10 and is provided with discharging pipe 9, the upside slope of deposit room 7 is provided with inlet pipe 8.
Specifically, when in use, the activated carbon to be carbonized can be fed into the carbonization furnace 1 through the feeding pipe 8, and the treated activated carbon can be discharged through the discharging pipe 9. The structure and the operation principle of the carbonization furnace 1 can be found in the prior art, and the description of the embodiment is omitted. In a preferred embodiment, the carbonization furnace 1 is supported and fixed by a support base 15. The first flue gas pipeline 12 is connected to a tail gas outlet of the settling chamber 7 of the carbonization furnace 1 and is used for collecting particulate matters such as dust in the tail gas from the carbonization furnace 1; the decoking pool 2 is used for dedusting combustible flue gas generated in the running process of the carbonization furnace 1, and the high-temperature and high-pressure resistant fan 3 and the ignition device 4 are used for introducing tail gas in the carbonization furnace 1 into the front incineration chamber 11; the pre-incinerator 11 is used to burn combustible materials in the exhaust gas from the carbonization furnace 1. The front-mounted incineration chamber 11 is built by refractory materials and is provided with an explosion-proof device, the function of the front-mounted incineration chamber 11 is to meet the basic condition that the flue gas is completely combusted in the interval, through calculation, one third of the flue gas generated by the carbonization furnace 1 is used for secondary return incineration, the remaining two thirds of the flue gas enter the rear-mounted incineration chamber for heat exchange, and the rear-mounted incineration chamber is not shown in the figure. The heat source after combustion is introduced into the regenerator 10. The regenerator 10 is used to feed a stable high-temperature heat source into the carbonization furnace 1 to satisfy the thermal decomposition reaction of the carbonized material. And a good carbonization temperature gradient is formed by adjusting the speed of the high-temperature and high-pressure resistant fan 3.
On the basis of the above embodiment, as a preferred implementation mode, the ignition device 4 comprises an ignition assembly, a gas mixing chamber communicated with the third flue gas pipeline 14, and a helical fan, wherein the gas mixing chamber is communicated with the front incineration chamber 11, the helical fan is arranged between the gas mixing chamber and the front incineration chamber 11, and the ignition assembly is arranged outside the gas mixing chamber. After the combustible flue gas passing through the third flue gas pipeline 14 enters the gas mixing chamber, the combustible flue gas is heated and pressurized again to form high-temperature flue gas, the high-temperature flue gas and air are mixed, the mixed flue gas is ignited by the ignition assembly, and then the mixed flue gas is blown to the front-mounted incineration chamber 11 in a rotating mode through the spiral fan to be combusted, and rotating flame is formed.
In addition to the above-described embodiments, as a preferable embodiment, the inner side wall of the regenerator 10 is further provided with perforated checker bricks. The incinerated flue gas forms high-temperature heat energy and enters the regenerator 10. When the combustion of the flue gas in the front incineration chamber 11 is insufficient, the flue gas can enter the regenerator 10 for further combustion. The purpose of the perforated checker bricks is to absorb and release heat, which is released when the amount of exhaust gases in the pre-chamber 11 decreases so that the temperature in the pre-chamber 11 remains substantially constant. Of course, the regenerator 10 may also be constructed of high alumina bricks or clay bricks.
In order to prevent the gas pipeline from exploding due to the backfire of the ignition device 4 caused by the stop of the high-temperature and high-pressure resistant fan 3 (for example, due to power failure caused by an accident). In addition to the above-mentioned embodiments, as a preferred embodiment, the explosion-proof valve 5 is further provided on the second flue gas duct 13, and the gas check valve 6 is further provided on the third flue gas duct 14. The explosion-proof valve 5 is used for preventing gas from exploding in the pipeline and closing a gas pipeline; the gas check valve 6 is used for preventing the combustible tail gas from flowing backwards.
In addition to the above-mentioned embodiments, as a preferable embodiment, an oxygen supply fan is further provided in communication with the connection between the front incineration chamber 11 and the ignition device 4. When the amount of the carbonization tail gas is increased, the oxygen supply fan is controlled to increase the oxygen supply in the ignition device 4, when the amount of the carbonization tail gas is reduced, the oxygen supply in the ignition device 4 can be reduced by controlling the oxygen supply fan, so that the combustible in the tail gas is fully combusted in the preposed incineration chamber 11, and the heat returns to the carbonization furnace 1 to be fully utilized. In order to treat and discharge two thirds of tail gas which is not recovered and combusted,
in actual use, the first: after the ignition port of the preposed incineration chamber is ignited and dried to 1000-1200 ℃ by natural gas, carbonized materials are put into the carbonization furnace through a blanking pipe on the upper side of the settling chamber; secondly, the method comprises the following steps: combustible flue gas generated by the carbonization material when heated enters a decoking tank through a first flue gas pipeline for dust fall treatment; thirdly, the method comprises the following steps: introducing one third of combustible flue gas subjected to dust settling treatment into the preposed incineration chamber through a high-temperature and high-pressure resistant fan and a second flue gas pipeline and a third flue gas pipeline, and adding air and combustible flue gas into the preposed incineration chamber through an ignition device for mixed combustion; fourthly: the heat energy generated by combustion enters the regenerator for heat storage and combustion and then enters the carbonization furnace to participate in carbonization; fifth, the method comprises the following steps: and the two-thirds combustible flue gas after the dust fall treatment enters the rear incineration chamber through the connecting pipeline to be subjected to heat exchange treatment and then is discharged.
On the basis of the above embodiment, as a preferred implementation mode, an outlet of the rear incineration chamber is communicated with a waste heat boiler, a smoke exhaust pipeline of the waste heat boiler is communicated with an induced draft fan, an outlet of the induced draft fan is communicated with a wet desulphurization tower, and an outlet of the wet desulphurization tower is communicated with a wet electric dust collector. After the flue gas generated by heat exchange of the rear incineration chamber enters a waste heat boiler for use, the flue gas generated by a smoke exhaust pipeline of the waste heat boiler is introduced into a wet desulphurization tower through an induced draft fan for desulphurization treatment; and the flue gas after desulfurization enters a wet electric dust collector for dust removal and then is discharged into the atmosphere.
In 1 case of the carbonization furnace with the annual output of 5000 tons per furnace, the temperature of the tail gas is 550-650 ℃, the content of combustible gas in the tail gas is about 35-45%, the tail gas is combusted in the preposed incineration chamber 11 and heated to 800-. According to the design, the annual running time of the production line is about 8000h, the fuel consumption can be reduced by 40 yuan per hour by calculating according to the current fuel coal price of 430 yuan/t of the price bureau, the annual consumption reduction can reach 32 ten thousand yuan, and the economic benefit is created.
The application provides an active carbon carbomorphism stove tail gas waste heat recovery utilizes device, when the in-service use, tail gas (combustible flue gas) generated in the running process of the carbonization furnace can enter the decoking pool through the first flue gas pipeline, dust in the flue gas is subjected to dust fall treatment through a decoking pool, part of combustible flue gas after dust fall treatment can be introduced into an ignition device through a high temperature and high pressure resistant fan through a second flue gas pipeline and a third flue gas pipeline, combustible flue gas and air are mixed and ignited by an ignition device and then are conveyed to a preposed incineration chamber for incineration, the incinerated flue gas forms high-temperature heat energy to enter a regenerative chamber so as to further incinerate the insufficiently combusted flue gas, the high-temperature heat energy in the regenerative chamber can return to a carbonization furnace to participate in carbonization, can realize recycling of a part of flue gas, improve the utilization rate of flue gas heat, reduce the use of fuel gas, and realize environment-friendly production and low energy consumption of activated carbon production. And the other part of the flue gas after the dust-settling treatment can enter the rear incineration chamber through a connecting pipeline for heat exchange treatment and then is discharged.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above-described embodiments of the present application do not limit the scope of the present application.
Claims (7)
1. The utility model provides an active carbon carbomorphism stove tail gas waste heat recovery utilizes device which characterized in that includes:
the decoking pond of deposit room lower part export intercommunication through first flue gas pipeline and retort, decoking pond exit has rearmounted incineration chamber through the connecting tube intercommunication, decoking pond exit has high temperature resistant high pressure positive blower through second flue gas pipeline intercommunication, the exit of high temperature resistant high pressure positive blower has ignition through third flue gas pipeline intercommunication, one side of ignition is provided with leading incineration chamber, one side intercommunication of leading incineration chamber is provided with the regenerator, the regenerator with the retort intercommunication, the retort is close to the one end downside of regenerator is provided with the discharging pipe, the upside slope of deposit room is provided with the inlet pipe.
2. The device for recycling the waste heat of the tail gas of the activated carbon carbonization furnace as claimed in claim 1, wherein the second flue gas pipeline is further provided with an explosion-proof valve, and the third flue gas pipeline is further provided with a gas check valve.
3. The device for recycling the waste heat of the tail gas of the activated carbon carbonization furnace as claimed in claim 1, wherein the inner side wall of the regenerator is further provided with perforated checker bricks.
4. The activated carbon carbonization furnace tail gas waste heat recovery and utilization device according to claim 1, wherein the ignition device comprises an ignition assembly, a gas mixing chamber communicated with the third flue gas pipeline, and a helical fan, the gas mixing chamber is communicated with the front incineration chamber, the helical fan is arranged between the gas mixing chamber and the front incineration chamber, and the ignition assembly is arranged outside the gas mixing chamber.
5. The device for recycling the waste heat of the tail gas of the activated carbon carbonization furnace as claimed in claim 1, wherein the carbonization furnace is supported and fixed by a support base.
6. The device for recycling the tail gas waste heat of the activated carbon carbonization furnace as claimed in claim 1, wherein an oxygen supply fan is further communicated with the joint of the preposed incineration chamber and the ignition device.
7. The device for recycling the tail gas waste heat of the activated carbon carbonization furnace according to claim 1, wherein a waste heat boiler is communicated with an outlet of the post-combustion chamber, an induced draft fan is communicated with a smoke exhaust pipeline of the waste heat boiler, a wet desulphurization tower is communicated with an outlet of the induced draft fan, and a wet electric dust collector is communicated with an outlet of the wet desulphurization tower.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121728056.0U CN215766534U (en) | 2021-07-26 | 2021-07-26 | Tail gas waste heat recycling device of active carbon carbonization furnace |
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| CN202121728056.0U CN215766534U (en) | 2021-07-26 | 2021-07-26 | Tail gas waste heat recycling device of active carbon carbonization furnace |
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| CN215766534U true CN215766534U (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566596A (en) * | 2021-07-26 | 2021-10-29 | 宁夏廷远活性炭有限公司 | Device and method for recycling waste heat of tail gas of activated carbon carbonization furnace |
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2021
- 2021-07-26 CN CN202121728056.0U patent/CN215766534U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113566596A (en) * | 2021-07-26 | 2021-10-29 | 宁夏廷远活性炭有限公司 | Device and method for recycling waste heat of tail gas of activated carbon carbonization furnace |
| CN113566596B (en) * | 2021-07-26 | 2024-09-27 | 宁夏廷远活性炭有限公司 | A device and method for recovering waste heat from tail gas of activated carbon carbonization furnace |
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