CN110272748B - Active coking device and method - Google Patents
Active coking device and method Download PDFInfo
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- CN110272748B CN110272748B CN201910640296.6A CN201910640296A CN110272748B CN 110272748 B CN110272748 B CN 110272748B CN 201910640296 A CN201910640296 A CN 201910640296A CN 110272748 B CN110272748 B CN 110272748B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/005—After-treatment of coke, e.g. calcination desulfurization
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Abstract
An active coking device and method, which provides high temperature flue gas for carbonization of granular materials for a carbonization furnace through a gas combustion chamber of the carbonization furnace; carbonizing the granules under high-temperature flue gas in a carbonization furnace to form carbonized materials; the carbonized material is sent into a carbonized material cooler, air is sent into the carbonized material cooler through a cooler air inlet, the carbonized material is cooled through flowing air, a cooler air outlet is communicated with the recycling air inlet, and the air heated by the carbonized material is sent into a gas combustion chamber of the carbonization furnace and is used as combustion air of the gas combustion chamber of the carbonization furnace; and (3) communicating the tail gas incineration chamber of the carbonization furnace and the inlet of the recycling gas channel with the tail part of the carbonization furnace, so that one part of tail gas of the carbonization furnace enters the recycling gas channel and returns to the gas combustion chamber of the carbonization furnace through the recycling gas channel for re-combustion and utilization, and the other part of tail gas enters the tail gas incineration chamber of the carbonization furnace for re-combustion and the tail gas treatment unit is used for treating the burnt waste gas.
Description
Technical Field
The invention relates to the field of active coking, in particular to a clean and efficient active coking device and method.
Background
Carbonization is a key production process in the production process of active coke, and the carbonized material is heated to about 700 ℃ by using high-temperature flue gas generated by fuel combustion, so that water in the granulated material is volatilized, and the carbonized material with sufficient strength is formed. The existing active coking process is not ideal in the waste heat utilization state, the discharged high-temperature flue gas cannot be effectively utilized, and a large amount of external energy is required to be utilized to maintain the whole coking process; the discharged flue gas contains a large amount of pollutants and is a difficult problem for treatment.
Disclosure of Invention
In order to solve the technical problems, the invention provides a clean and efficient active coking process, which mainly aims at the problems of waste heat utilization, flue gas treatment and the like of carbonization in the active coke production process. The technical scheme of the invention is as follows:
as a first aspect of the present invention, there is provided an active coking apparatus comprising a carbonization furnace gas combustion chamber, a carbonization furnace tail gas incineration chamber, a recycling gas passage, a carbonization material cooler and a tail gas treatment unit; the carbonization furnace gas combustion chamber comprises a gas inlet, an air inlet, a recycling gas inlet and a gas combustion chamber ignition device, wherein gas and air are respectively fed into the carbonization furnace gas combustion chamber through the gas inlet and the air inlet, and are ignited through the gas combustion chamber ignition device; the outlet of the gas combustion chamber of the carbonization furnace is communicated with the inlet of the carbonization furnace and is used for providing high-temperature flue gas for granulating carbonization for the carbonization furnace; the tail gas of the carbonization furnace enters the recycling gas channel, and enters the carbonization furnace gas combustion chamber through the recycling gas channel and the recycling gas inlet for re-combustion utilization, and the other part of the tail gas enters the carbonization furnace tail gas combustion chamber for re-combustion, and the burnt waste gas is treated through the tail gas treatment unit; the carbonization furnace comprises a feed inlet and a discharge outlet, the discharge outlet is communicated with the carbonization material cooler, the carbonization material cooler cools the carbonization material through air, the carbonization material cooler comprises a cooler air inlet and a cooler air outlet, air is fed through the cooler air inlet, the carbonization material is cooled through flowing air, the cooler air outlet is communicated with the recycling air inlet, and the air heated by the carbonization material is fed into a gas combustion chamber of the carbonization furnace and used as combustion air of the gas combustion chamber of the carbonization furnace.
Further, the carbonization furnace tail gas incineration chamber comprises a smoke ignition device and an afterburning air inlet, air is fed into the carbonization furnace tail gas incineration chamber through the afterburning air inlet, the smoke ignition device is used for igniting gas in the carbonization furnace tail gas incineration chamber, the carbonization furnace tail gas combustion chamber is further provided with an ammonia spraying port, nitrogen is fed into the carbonization furnace tail gas incineration chamber through the ammonia spraying port, SNCR denitration is realized in the combustion chamber, so that denitration load of a rear tail gas treatment device is reduced, and meanwhile, operation cost is reduced.
Further, the tail gas treatment unit comprises a waste heat boiler, a flue gas treatment system and a waste gas exhaust fan, the outlet of the carbonization furnace tail gas incineration chamber is communicated with the chimney through the waste heat boiler, the flue gas treatment system and the waste gas exhaust fan in sequence, the residual tail gas is ignited in the carbonization furnace tail gas combustion chamber through a flue gas ignition device, the generated high-temperature flue gas is sent into the waste heat boiler to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler is sent into the flue gas treatment system for flue gas treatment, and the flue gas after being treated by the flue gas treatment system is sent into the chimney through the waste gas exhaust fan and is discharged through the chimney.
Further, the active coking device comprises a cooling blower, the carbonized material cooler comprises a cooled carbonized material outlet, and an air outlet of the cooling blower is communicated with a cooler air inlet of the carbonized material cooler and is used for feeding air into the carbonized material cooler, and the carbonized material cooled by the air is fed out from the cooled carbonized material outlet.
Further, the recycling gas channel comprises a carbonization tail gas recycling loop valve and a tail gas recycling fan, and a tail outlet of the carbonization furnace is communicated with a recycling gas inlet of a gas combustion chamber of the carbonization furnace sequentially through the carbonization tail gas recycling loop valve and the tail gas recycling fan.
Further, the fuel gas is blast furnace gas, coke oven gas or natural gas.
As a second aspect of the present invention, there is provided an active coking process, the process comprising:
providing high-temperature flue gas for granulating carbonization for the carbonization furnace through a gas combustion chamber of the carbonization furnace;
adding the granular materials into a carbonization furnace, and carbonizing the granular materials under high-temperature flue gas to form carbonized materials;
the carbonized material is sent into a carbonized material cooler, air is sent into the carbonized material cooler through a cooler air inlet, the carbonized material is cooled through flowing air, a cooler air outlet is communicated with the recycling air inlet, and the air heated by the carbonized material is sent into a gas combustion chamber of the carbonization furnace and is used as combustion air of the gas combustion chamber of the carbonization furnace;
and (3) communicating the tail gas incineration chamber of the carbonization furnace and the inlet of the recycling gas channel with the tail part of the carbonization furnace, so that one part of tail gas of the carbonization furnace enters the recycling gas channel and returns to the gas combustion chamber of the carbonization furnace through the recycling gas channel for re-combustion and utilization, and the other part of tail gas enters the tail gas incineration chamber of the carbonization furnace for re-combustion and the tail gas treatment unit is used for treating the burnt waste gas.
Further, the carbonization furnace tail gas incineration chamber comprises a smoke ignition device, an afterburning air inlet and an ammonia spraying port, air is fed into the carbonization furnace tail gas incineration chamber through the afterburning air inlet, gas in the carbonization furnace tail gas incineration chamber is ignited through the smoke ignition device, nitrogen is fed into the carbonization furnace tail gas incineration chamber through the ammonia spraying port, and SNCR denitration is realized in the combustion chamber, so that denitration load of a rear tail gas treatment device is reduced, and meanwhile, operation cost is reduced.
Further, the tail gas treatment unit comprises a waste heat boiler, a flue gas treatment system and a waste gas exhaust fan, the outlet of the carbonization furnace tail gas incineration chamber is communicated with the chimney through the waste heat boiler, the flue gas treatment system and the waste gas exhaust fan in sequence, the residual tail gas is ignited in the carbonization furnace tail gas combustion chamber through a flue gas ignition device, the generated high-temperature flue gas is sent into the waste heat boiler to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler is sent into the flue gas treatment system for flue gas treatment, and the flue gas after being treated by the flue gas treatment system is sent into the chimney through the waste gas exhaust fan and is discharged through the chimney.
Further, the flue gas treatment system adopts a semi-dry desulfurization and denitrification, wet flue gas desulfurization and denitrification or active coke desulfurization and denitrification treatment process to treat the flue gas.
The invention has the following beneficial effects:
according to the invention, pyrolysis gas generated in the carbonization process is recycled to be used as part of energy of the gas combustion chamber of the carbonization furnace, and meanwhile, the high-temperature sensible heat of the carbonized material is utilized to raise the temperature of combustion air, and part of residual carbonized tail gas is subjected to incineration waste heat utilization, so that the maximum utilization of energy in the carbonization process is realized; and the flue gas after the charring tail gas is burnt is treated by adopting an SNCR+ subsequent tail gas treatment system, so that the ultralow emission standard is ensured to be reached. By adopting the technical scheme of the invention, the waste heat and the residual energy in the active coking process can be utilized to the maximum extent, and the discharged tail gas can be purified, so that the smoke emission standard is ensured.
Drawings
Fig. 1 is a block diagram of an active coking device according to an embodiment of the present invention.
Reference numerals illustrate: 100. the device comprises a carbonization furnace, 210, a carbonization furnace gas combustion chamber, 300, a carbonization furnace tail gas incineration chamber, 200, a gas combustion chamber ignition device, 201, an air inlet, 202, a gas inlet, 203, a recycling gas inlet, 204, a recycling air inlet, 205, a discharge hole, 206, a carbonization material cooler, 207, a cooling blower, 208, a cooling carbonization material outlet, 209, a chimney, 101, a carbonization tail gas recycling loop valve, 102, a tail gas recycling fan, 302, a feed inlet, 303, a flue gas ignition device, 304, an afterburning air inlet, 305, a waste gas discharge fan, 306, a waste heat boiler, 307, a flue gas treatment system, 308 and an ammonia spraying port.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, as a first embodiment of the present invention, there is provided an active coking apparatus comprising a coking furnace gas combustion chamber 210, a coking furnace 100, a coking furnace tail gas incineration chamber 300, a recycling gas passage, a coking material cooler 206, and a tail gas treatment unit; the carbonization furnace gas combustion chamber 210 comprises a gas inlet 202, an air inlet 201, a recycling air inlet 204, a recycling gas inlet 203 and a gas combustion chamber ignition device 200, wherein the carbonization furnace gas combustion chamber 210 is respectively communicated with an external gas conveying device and an external air conveying device through the gas inlet 202 and the air inlet 201, external gas and air respectively enter the carbonization furnace gas combustion chamber 210 through the gas inlet 202 and the air inlet 201 and are ignited through the gas combustion chamber ignition device 200, and the gas is blast furnace gas, coke oven gas or natural gas and the like; the outlet of the gas combustion chamber 210 of the carbonization furnace is communicated with the inlet of the carbonization furnace 100 and is used for providing high-temperature flue gas for carbonization of granules for the carbonization furnace 100; the inlet of the carbonization furnace tail gas incineration chamber 300 and the inlet of the recycling gas channel are both communicated with the tail part of the carbonization furnace 100, the outlet of the carbonization furnace tail gas incineration chamber 300 is communicated with the inlet of the tail gas treatment unit, the outlet of the recycling gas channel is communicated with the recycling gas inlet 203, one part of the carbonization furnace tail gas enters the recycling gas channel and enters the carbonization furnace gas combustion chamber 210 through the recycling gas channel and the recycling gas inlet 203 for re-combustion and utilization, and the other part enters the carbonization furnace tail gas incineration chamber 300 for re-combustion and the tail gas after combustion is treated by the tail gas treatment unit; the carbonization furnace 100 comprises a feed inlet 302 and a discharge outlet 205, the discharge outlet 205 is communicated with the carbonization material cooler 206, the carbonization material cooler 206 cools the carbonization material through air, the carbonization material cooler 206 comprises a cooler air inlet and a cooler air outlet, air is fed through the cooler air inlet, the carbonization material is cooled through flowing air, the cooler air outlet is communicated with the recycling air inlet 204, and the air heated by the carbonization material is fed into the carbonization furnace gas combustion chamber 210 and used as combustion air of the carbonization furnace gas combustion chamber 210.
According to the invention, high-temperature flue gas for granulating and carbonizing is provided for the carbonization furnace 100 through the carbonization furnace gas combustion chamber 210, part of tail gas generated by the carbonization furnace 100 enters the recycling gas channel, the tail gas returns to the carbonization furnace gas combustion chamber 210 through the recycling gas channel for re-combustion and utilization, the consumption of external energy sources is reduced, the other part of the tail gas enters the carbonization furnace tail gas incineration chamber 300 for re-combustion, the combusted waste gas is treated through the tail gas treatment unit and then discharged, the flue gas emission standard is ensured, meanwhile, the carbonized material is cooled through flowing air, the air heated by the carbonized material is sent into the carbonization furnace gas combustion chamber 210, the temperature of combustion-supporting air is raised by utilizing the high-temperature sensible heat of the carbonized material, so that the waste heat and residual energy in the active coking and carbonization process are utilized maximally, and meanwhile, the discharged tail gas can be purified.
Preferably, the carbonization furnace tail gas incineration chamber 300 comprises a flue gas ignition device 303 and an after-combustion air inlet 304, the carbonization furnace tail gas incineration chamber 300 is communicated with an external after-combustion air conveying device through the after-combustion air inlet 304, air is fed into the carbonization furnace tail gas incineration chamber 300 through the after-combustion air inlet 304, the flue gas ignition device 303 is used for igniting gas in the carbonization furnace tail gas incineration chamber 300, the carbonization furnace tail gas combustion chamber is further provided with an ammonia spraying port 308, the carbonization furnace tail gas incineration chamber 300 is communicated with an external ammonia conveying device through the ammonia spraying port 308, external nitrogen is fed into the carbonization furnace tail gas incineration chamber 300 through the ammonia spraying port 308, and SNCR denitration is realized in the combustion chamber, so that denitration load of a rear tail gas treatment device is reduced, and meanwhile, operation cost is reduced.
Preferably, the exhaust gas treatment unit includes a waste heat boiler 306, a flue gas treatment system 307 and an exhaust gas exhaust fan 305, the outlet of the carbonization furnace exhaust gas incineration chamber 300 is sequentially connected with the chimney 209 through the waste heat boiler 306, the flue gas treatment system 307 and the exhaust gas exhaust fan 305, the rest of the exhaust gas is ignited in the carbonization furnace exhaust gas combustion chamber by the flue gas ignition device 303, the generated high-temperature flue gas is sent into the waste heat boiler 306 to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler 306 is sent into the flue gas treatment system 307 to be treated, the flue gas after passing through the flue gas treatment system 307 is sent into the inlet of the exhaust gas exhaust fan 305 and is sent into the chimney 209 through the outlet of the exhaust gas exhaust fan 305, and the flue gas treatment system 307 can treat the flue gas by adopting the existing semi-dry desulfurization and denitration, wet flue gas desulfurization and denitration, active coke desulfurization and denitration and other treatment processes.
Preferably, the active coking device comprises a cooling blower 207305, the carbonized material cooler 206 comprises a cooling carbonized material outlet 208, an air outlet of the cooling blower 207305 is communicated with a cooler air inlet of the carbonized material cooler 206 and is used for feeding air into the carbonized material cooler 206, the carbonized material cooled by the air is fed out from the cooling carbonized material outlet 208, and meanwhile, the air heated by the carbonized material is fed into a gas combustion chamber 210 of the carbonization furnace, and the temperature of the combustion air is raised by utilizing the high-temperature sensible heat of the carbonized material.
Preferably, the recycling gas channel comprises a carbonization tail gas recycling loop valve 101 and a tail gas recycling fan 102, the tail outlet of the carbonization furnace is sequentially communicated with the recycling gas inlet 203 of the gas combustion chamber 210 of the carbonization furnace through the carbonization tail gas recycling loop valve 101 and the tail gas recycling fan 102, tail gas from the tail of the carbonization furnace enters the inlet of the tail gas recycling fan 102 after passing through the tail gas recycling loop valve, and is returned to the gas combustion chamber 210 of the carbonization furnace again for recycling through the tail gas recycling fan 102 from the tail gas recycling fan 102 outlet, so that the consumption of external energy sources is reduced.
As a second embodiment of the present invention, there is provided an active coking process, the process comprising:
the gas and air are respectively fed into the gas combustion chamber 210 of the carbonization furnace through the gas inlet and the air inlet, and the gas is ignited through the ignition device 200 of the gas combustion chamber, so that high-temperature flue gas for carbonization of the granules is provided for the carbonization furnace 100 through the gas combustion chamber 210 of the carbonization furnace;
the pelletization material is added into the carbonization furnace 100 through the feed inlet 302, so that the pelletization material is carbonized under high-temperature flue gas to form carbonized material;
feeding the carbonized material into a carbonized material cooler 206 through a discharge port 205, feeding air through a cooler air inlet, cooling the carbonized material through flowing air, communicating a cooler air outlet with the recycling air inlet 204, and feeding the air heated by the carbonized material into a gas combustion chamber 210 of the carbonization furnace and serving as combustion air of the gas combustion chamber 210 of the carbonization furnace;
and the inlets of the carbonization furnace tail gas incineration chamber 300 and the recycling gas channel are communicated with the tail part of the carbonization furnace, so that one part of the carbonization furnace tail gas enters the recycling gas channel and returns to the carbonization furnace gas combustion chamber 210 for re-combustion and utilization through the recycling gas channel, and the other part of the carbonization furnace tail gas enters the carbonization furnace tail gas incineration chamber 300 for re-combustion and the waste gas after combustion is treated through the tail gas treatment unit.
The temperature of the flue gas in the gas combustion chamber 210 of the carbonization furnace can be specifically adjusted according to the process, for example, the temperature of the flue gas is raised to about 1000 ℃, and the temperature of the tail gas outlet of the carbonization furnace is ensured to be about 300 ℃.
Preferably, the method further comprises: the carbonization furnace tail gas incineration chamber 300 comprises a flue gas ignition device 303, an afterburning air inlet 304 and an ammonia spraying port 308, wherein air is fed into the carbonization furnace tail gas incineration chamber 300 through the afterburning air inlet 304, gas in the carbonization furnace tail gas incineration chamber 300 is ignited through the flue gas ignition device 303, nitrogen is fed into the carbonization furnace tail gas incineration chamber 300 through the ammonia spraying port 308, and SNCR denitration is realized in a combustion chamber, so that the denitration load of a rear tail gas treatment device is reduced, and meanwhile, the operation cost is reduced.
Preferably, the method further comprises that the tail gas treatment unit comprises a waste heat boiler 306, a flue gas treatment system 307 and a waste gas exhaust fan 305, an outlet of the carbonization furnace tail gas incineration chamber 300 is communicated with the chimney 209 sequentially through the waste heat boiler 306, the flue gas treatment system 307 and the waste gas exhaust fan 305, the rest tail gas is ignited in the carbonization furnace tail gas combustion chamber through a flue gas ignition device 303, the generated high-temperature flue gas is sent into the waste heat boiler 306 to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler 306 is sent into the flue gas treatment system 307 to be treated, the flue gas after being treated by the flue gas treatment system 307 is sent into the chimney 209 through the waste gas exhaust fan 305 and is exhausted through the chimney 209, wherein the flue gas treatment system 307 can treat the flue gas by adopting the existing semi-dry desulfurization and denitrification, wet flue gas desulfurization and denitrification or active coke desulfurization and denitrification treatment process.
According to the invention, pyrolysis gas generated in the carbonization process is recycled to serve as part of energy of the gas combustion chamber 210 of the carbonization furnace, the high-temperature sensible heat of the carbonized material is utilized to raise the temperature of combustion air, and part of residual carbonized tail gas is subjected to incineration waste heat utilization, so that the maximum utilization of energy in the carbonization process is realized; and the flue gas after the charring tail gas is burnt is treated by adopting an SNCR+ subsequent tail gas treatment system, so that the ultralow emission standard is ensured to be reached. By adopting the technical scheme of the invention, the waste heat and the residual energy in the active coking process can be utilized to the maximum extent, and the discharged tail gas can be purified, so that the smoke emission standard is ensured.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The active coke carbonization device is characterized by comprising a carbonization furnace gas combustion chamber, a carbonization furnace tail gas incineration chamber, a recycling gas channel, a carbonization material cooler and a tail gas treatment unit; the carbonization furnace gas combustion chamber comprises a gas inlet, an air inlet, a recycling gas inlet and a gas combustion chamber ignition device, wherein gas and air are respectively fed into the carbonization furnace gas combustion chamber through the gas inlet and the air inlet, and are ignited through the gas combustion chamber ignition device; the outlet of the gas combustion chamber of the carbonization furnace is communicated with the inlet of the carbonization furnace and is used for providing high-temperature flue gas for granulating carbonization for the carbonization furnace; the tail gas of the carbonization furnace enters the recycling gas channel, and enters the carbonization furnace gas combustion chamber through the recycling gas channel and the recycling gas inlet for re-combustion utilization, and the other part of the tail gas enters the carbonization furnace tail gas combustion chamber for re-combustion, and the burnt waste gas is treated through the tail gas treatment unit; the carbonization furnace comprises a feed inlet and a discharge outlet, the discharge outlet is communicated with the carbonization material cooler, the carbonization material cooler cools the carbonization material through air, the carbonization material cooler comprises a cooler air inlet and a cooler air outlet, air is fed through the cooler air inlet, the carbonization material is cooled through flowing air, the cooler air outlet is communicated with the recycling air inlet, and the air heated by the carbonization material is fed into a gas combustion chamber of the carbonization furnace and used as combustion air of the gas combustion chamber of the carbonization furnace.
2. The activated coke carbonization device according to claim 1, wherein the carbonization furnace tail gas incineration chamber comprises a smoke ignition device and an afterburning air inlet, air is fed into the carbonization furnace tail gas incineration chamber through the afterburning air inlet, the smoke ignition device is used for igniting gas in the carbonization furnace tail gas incineration chamber, the carbonization furnace tail gas combustion chamber is further provided with an ammonia spraying port, nitrogen is fed into the carbonization furnace tail gas incineration chamber through the ammonia spraying port, and SNCR denitration is realized in the combustion chamber, so that denitration load of a subsequent tail gas treatment device is reduced, and operation cost is reduced.
3. The active coking device according to claim 1, wherein the tail gas treatment unit comprises a waste heat boiler, a flue gas treatment system and a waste gas discharge fan, the outlet of the tail gas incineration chamber of the coking furnace is communicated with a chimney through the waste heat boiler, the flue gas treatment system and the waste gas discharge fan in sequence, the rest tail gas is ignited in the tail gas combustion chamber of the coking furnace through a flue gas ignition device, the generated high-temperature flue gas is sent into the waste heat boiler to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler is sent into the flue gas treatment system to be treated, and the flue gas after being treated by the flue gas treatment system is sent into the chimney through the waste gas discharge fan to be discharged through the chimney.
4. The active coking device according to claim 1, wherein the active coking device comprises a cooling blower, the carbonized material cooler comprises a cooled carbonized material outlet, and an air outlet of the cooling blower is communicated with a cooler air inlet of the carbonized material cooler and is used for feeding air into the carbonized material cooler, and the carbonized material cooled by the air is sent out from the cooled carbonized material outlet.
5. The activated coke carbonization device according to claim 1, wherein the recycling gas channel comprises a carbonized tail gas recycling loop valve and a tail gas recycling fan, and the tail outlet of the carbonization furnace is communicated with the recycling gas inlet of the gas combustion chamber of the carbonization furnace sequentially through the carbonized tail gas recycling loop valve and the tail gas recycling fan.
6. The activated coking device according to claim 1, wherein the gas is blast furnace gas, coke oven gas or natural gas.
7. A process for active coking, the process comprising:
providing high-temperature flue gas for granulating carbonization for the carbonization furnace through a gas combustion chamber of the carbonization furnace;
adding the granular materials into a carbonization furnace, and carbonizing the granular materials under high-temperature flue gas to form carbonized materials;
the carbonized material is sent into a carbonized material cooler, air is sent into the carbonized material cooler through a cooler air inlet, the carbonized material is cooled through flowing air, an air outlet of the cooler is communicated with a recycling air inlet, and the air heated by the carbonized material is sent into a gas combustion chamber of the carbonization furnace and is used as combustion air of the gas combustion chamber of the carbonization furnace;
and (3) communicating the tail gas incineration chamber of the carbonization furnace and the inlet of the recycling gas channel with the tail part of the carbonization furnace, so that one part of tail gas of the carbonization furnace enters the recycling gas channel and returns to the gas combustion chamber of the carbonization furnace through the recycling gas channel for re-combustion and utilization, and the other part of tail gas enters the tail gas incineration chamber of the carbonization furnace for re-combustion and the tail gas treatment unit is used for treating the burnt waste gas.
8. The active coking method according to claim 7, wherein the carbonization furnace tail gas incineration chamber comprises a flue gas ignition device, an afterburning air inlet and an ammonia spraying port, air is fed into the carbonization furnace tail gas incineration chamber through the afterburning air inlet, gas in the carbonization furnace tail gas incineration chamber is ignited through the flue gas ignition device, nitrogen is fed into the carbonization furnace tail gas incineration chamber through the ammonia spraying port, and SNCR denitration is realized in the combustion chamber, so that denitration load of a following tail gas treatment device is reduced, and meanwhile, operation cost is reduced.
9. The method for active coking according to claim 7, wherein the tail gas treatment unit comprises a waste heat boiler, a flue gas treatment system and a waste gas discharge fan, the outlet of the tail gas incineration chamber of the carbonization furnace is communicated with the chimney through the waste heat boiler, the flue gas treatment system and the waste gas discharge fan in sequence, the rest tail gas is ignited in the tail gas combustion chamber of the carbonization furnace through a flue gas ignition device, the generated high-temperature flue gas is sent into the waste heat boiler to generate high-temperature high-pressure steam, the flue gas after passing through the waste heat boiler is sent into the flue gas treatment system to be treated, and the flue gas after being treated by the flue gas treatment system is sent into the chimney through the waste gas discharge fan to be discharged through the chimney.
10. The active coking method according to claim 9, wherein the flue gas treatment system adopts a semi-dry desulfurization and denitrification process, a wet flue gas desulfurization and denitrification process or an active coke desulfurization and denitrification process to treat the flue gas.
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| CN110921664B (en) * | 2019-11-15 | 2024-07-16 | 太原理工大学 | Active carbon retort production system |
| CN111306949A (en) * | 2020-03-19 | 2020-06-19 | 中国矿业大学 | Energy-saving smoke recycling device for carbonization furnace |
| CN111876166B (en) * | 2020-06-29 | 2021-05-28 | 宁夏捷成新材料科技有限公司 | Carbonization furnace ignition device taking natural gas as fuel |
| CN114410329B (en) * | 2022-02-10 | 2022-10-28 | 山西沁新能源集团股份有限公司 | High carbon coke with hybrid carbon and method for producing same |
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| JP2007146016A (en) * | 2005-11-29 | 2007-06-14 | Kochi Univ Of Technology | Wood material carbonization furnace |
| CN103787306A (en) * | 2014-02-17 | 2014-05-14 | 淮北市协力重型机器有限责任公司 | External heating type rotary carbonization furnace |
| CN104891490A (en) * | 2015-06-08 | 2015-09-09 | 王润年 | Method for producing active carbon in fluidization way |
| CN210595913U (en) * | 2019-07-16 | 2020-05-22 | 广西盛隆冶金有限公司 | Active coke carbonization device |
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2019
- 2019-07-16 CN CN201910640296.6A patent/CN110272748B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146016A (en) * | 2005-11-29 | 2007-06-14 | Kochi Univ Of Technology | Wood material carbonization furnace |
| CN103787306A (en) * | 2014-02-17 | 2014-05-14 | 淮北市协力重型机器有限责任公司 | External heating type rotary carbonization furnace |
| CN104891490A (en) * | 2015-06-08 | 2015-09-09 | 王润年 | Method for producing active carbon in fluidization way |
| CN210595913U (en) * | 2019-07-16 | 2020-05-22 | 广西盛隆冶金有限公司 | Active coke carbonization device |
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