CN116557883A - Incineration system and incineration method for treating waste gas in kiln - Google Patents
Incineration system and incineration method for treating waste gas in kiln Download PDFInfo
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- CN116557883A CN116557883A CN202310744239.9A CN202310744239A CN116557883A CN 116557883 A CN116557883 A CN 116557883A CN 202310744239 A CN202310744239 A CN 202310744239A CN 116557883 A CN116557883 A CN 116557883A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims description 185
- 239000007789 gas Substances 0.000 claims description 76
- 239000000779 smoke Substances 0.000 claims description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 20
- 229910052744 lithium Inorganic materials 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003517 fume Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000197 pyrolysis Methods 0.000 description 8
- 239000007772 electrode material Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012905 input function Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses an incineration system for treating waste gas in a kiln and an incineration method, which belong to the technical field of waste gas treatment in the kiln.
Description
Technical Field
The invention relates to the technical field of treatment of waste gas in a kiln, in particular to an incineration system and an incineration method for treating waste gas in the kiln.
Background
The new energy automobile comprises a pure electric automobile, a fuel cell automobile and an electric automobile, wherein the electric automobile uses a power lithium ion battery to provide energy for driving the automobile to move, electrode materials of the lithium battery are manufactured in a kiln through sintering, harmful gas is generated by chemical reaction of the electrode materials in the process of sintering the electrode materials of the lithium battery, waste gas generated by reaction is directly discharged to air to cause atmospheric environment pollution, the existing waste gas treatment mode is that waste gas generated by the electrode materials is sent into an incinerator matched with the sintering kiln through a pipeline to be incinerated, the incinerated gas is sent to be rapidly cooled through a humidifying and cooling device through the pipeline, the cooled and humidified gas is sent into a desulfurization and denitrification device to separate and remove harmful substances, finally, the harmless treated gas is discharged into the atmosphere through a fan, the waste gas treatment process is long in process, the waste gas is required to be transmitted through a plurality of pipelines, and a plurality of waste gas treatment systems are required to be configured in the lithium electric kiln to meet the treatment requirements of waste gas quantity, and the process is complex and the waste gas treatment cost is high.
The prior patent application with publication number of CN115261047A discloses a segmented pyrolysis system, which comprises a stock bin, a first gate valve, a feeding screw, a first segment pyrolysis furnace, a first air distribution machine, a first material guide pipe, a second gate valve, a second segment pyrolysis furnace, a second air distribution machine, a second material guide pipe, a third gate valve, a third segment pyrolysis furnace, a third air distribution machine, a slag discharging screw, a condensing system, a tail gas treatment system and a hot blast stove; the utility model discloses a lithium battery kiln, including first section pyrolysis oven feed inlet, second section pyrolysis oven feed inlet, third section pyrolysis oven feed inlet, tail gas treatment system, exhaust gas treatment system, make full use of high temperature flue gas heat, but not abundant to the burning of waste gas for the waste gas volume that the tail gas treatment effect is poor and can be handled is low, can't satisfy the sintering exhaust gas use of lithium battery kiln, the hot-blast furnace is carried to the tail gas treatment system after the high temperature flue gas that will produce respectively supplies heat in proper order through the pipeline, and this sectional type pyrolysis system adopts the harmful substance in the segmentation burning mode separation high temperature flue gas.
Disclosure of Invention
The invention aims to provide an incineration system for treating waste gas in a kiln, which solves the problems of low flow and poor conversion effect of the existing incineration system for treating continuous treatment tail gas.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a handle burning system of kiln internal waste gas, includes burns burning furnace, gas device and a plurality of ignition, one side of burning furnace is equipped with the air inlet of waste gas, burn burning furnace and be separated into a plurality of combustors that communicate in proper order, ignition installs respectively in the combustor, gas device includes combustion-supporting pipeline, combustion-supporting fan and gas pipeline, gas pipeline and a plurality of the intercommunication, and respectively to a plurality of provide the gas, combustion-supporting pipeline respectively with combustor and each ignition intercommunication is used for providing the air, realizes the innocent treatment to a large amount of waste gas through multistage combustion reaction and temperature control.
Preferably, the device further comprises a smoke exhaust device, the smoke exhaust device comprises a smoke exhaust pipeline and a smoke exhaust fan, one end of the smoke exhaust pipeline is connected with the third combustion chamber, the other end of the smoke exhaust pipeline is connected with the smoke exhaust fan, the exhaust is accelerated, and the flow rate of the whole waste gas is controlled.
Preferably, the device further comprises a temperature control device, the temperature control device comprises a PLC, an alarm lamp, a touch screen and a plurality of temperature sensors, the alarm lamp and the touch screen are respectively electrically connected with the PLC, the temperature sensors are respectively arranged in the combustion chambers, the touch screen is used for monitoring the temperature state of the incinerator in real time and setting combustion control parameters, and the alarm lamp is used for overtemperature alarm and can stabilize the temperature in each combustion chamber in a certain range.
Further, a gas flow valve is arranged between the pipeline and the incinerator, and the gas flow valve is used for controlling the quantity of gas injected into the incinerator, and heating and converting waste gas by combustion.
Preferably, the combustion-supporting pipeline comprises a first combustion-supporting air pipe and a second combustion-supporting air pipe, the first combustion-supporting air pipe and the second combustion-supporting air pipe are connected with the combustion-supporting fan, the first combustion-supporting air pipe is connected with a plurality of combustion chambers respectively, air valves are arranged between the first combustion-supporting air pipe and the combustion chambers, the air valves are used for controlling the air quantity injected into the combustion chambers, and the second combustion-supporting air pipe is communicated with a plurality of ignition devices to control the combustion reaction and regulate the temperature in each combustion chamber.
Preferably, an igniter is arranged in the ignition device, and the igniter is used for igniting fuel gas and stabilizing the temperature in each combustion chamber.
Preferably, the air valve is electrically connected with the PLC, and the smoke exhaust fan and the combustion-supporting fan are electrically connected with the PLC and used for controlling the air supply quantity to each combustion chamber and ensuring the stability of combustion and temperature.
Further, the incinerator further comprises a slow flow wall, wherein the slow flow wall is arranged between two adjacent combustion chambers and used for reducing the flow speed of waste gas between the two adjacent combustion chambers and prolonging the combustion reaction time of the waste gas.
Preferably, the slow-flow wall is grid-shaped, and is built by alumina bricks, is high-temperature resistant, has low cost in modifying the existing equipment, and is convenient to popularize and use.
The invention also aims to provide an incineration method for treating waste gas of a lithium electric kiln, which solves the problems of low flow and poor conversion effect of the existing waste gas incineration treatment.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the waste gas incineration method of the lithium electric kiln is characterized by comprising the following steps of:
s1, air inlet: waste gas in the lithium electric kiln enters a first combustion chamber of the incinerator through the gas inlet;
s2, primary combustion: the combustion-supporting pipeline and the gas pipeline are used for introducing gas and air into the first combustion chamber, the second combustion chamber and the third combustion chamber, the ignition device in the first combustion chamber is used for igniting, and waste gas is subjected to primary combustion;
s3, continuous reburning: the waste gas enters a second combustion chamber after preliminary combustion in the first combustion chamber, an ignition device in the second combustion chamber ignites, the waste gas is combusted again, the residual waste gas after combustion enters a third combustion chamber, and the ignition device in the third combustion chamber ignites to re-combust the residual waste gas;
s4, exhausting: the gas obtained by the three combustion reactions is discharged into the atmosphere through a smoke exhaust pipeline, and the waste gas is fully reacted by utilizing the three-stage combustion and the slow flow effect among the combustion chambers.
The beneficial effects of the invention are as follows:
(1) The incinerator, the gas device and the ignition devices are arranged on the incineration system for treating the waste gas in the kiln, one side of the incinerator is provided with a gas inlet, the incinerator is divided into three combustion chambers which are sequentially connected along the length direction, the three combustion chambers are communicated, the ignition devices are arranged in each combustion chamber, the gas device supplies gas and combustion air to each combustion chamber, the waste gas enters the incinerator through the gas inlet and is incinerated through the three combustion chambers in sequence, the incineration temperature in each combustion chamber is different, the temperature of each combustion chamber is maintained in a certain range by controlling the starting and stopping of the ignition devices and the supply quantity of the gas, the waste gas is fully converted through the incineration at different temperatures, the combustion chambers are spaced, and the flow velocity of the waste gas in the incinerator is reduced, so that the waste gas can be converted in time, and the conversion rate and conversion quantity of the waste gas are improved.
(2) The burning system for treating the waste gas in the kiln is further provided with a smoke discharging device and a temperature control device, the smoke discharging device can discharge the waste gas which is burned for many times outwards and can control the discharge flow rate, and the temperature control device can control the gas quantity and the ignition switch in each combustion chamber to ensure the temperature stability in each combustion chamber, the combustion-supporting pipeline comprises a first combustion-supporting air pipe and a second combustion-supporting air pipe, the first combustion-supporting air pipe and the second combustion-supporting air pipe supply air to each combustion chamber and the ignition device respectively, and the waste gas can be fully combusted by controlling the supply quantity of air.
(3) The aluminum oxide bricks are adopted between each combustion chamber of the incinerator to construct the grid-shaped slow flow wall to reduce the flowing speed of waste gas between each combustion chamber, so that the waste gas can react at high temperature in the combustion chamber for a sufficient time, the flowing speed of the waste gas is regulated by controlling the grid size on the slow flow wall, the waste gas treatment effect is ensured, the waste gas treatment efficiency is improved, the slow flow wall can be directly constructed in the incinerator, the transformation cost of original equipment is reduced, and the incinerator is convenient to popularize.
(4) The waste gas incineration method of the lithium electric kiln adopts a staged incineration mode to carry out incineration reaction on waste gas at different temperatures, improves the conversion rate of the waste gas, has stable flow speed in the repeated incineration process of the waste gas, facilitates accurate control on the incineration reaction process, can adjust the quantity of fuel gas and combustion air at any time in the incineration process, ensures the temperature stability in a combustion chamber and the full conversion of the waste gas, has simple conversion flow of the waste gas, more complete combustion and reduces the pollution of emission to the atmosphere.
Drawings
FIG. 1 is a diagram showing the composition of an incineration system for treating exhaust gas in a kiln according to the present invention;
FIG. 2 is a flow chart of the temperature control of the combustion chamber of the exhaust gas burning method for the lithium electric kiln provided by the invention;
fig. 3 is a flow chart of the exhaust gas incineration method for the lithium electric kiln provided by the invention.
Reference numerals:
1. an incinerator; 2. a slow flow wall; 3. a first combustion chamber; 4. a second combustion chamber; 5. a third combustion chamber; 6. an air inlet; 7. an ignition device; 8. an igniter; 9. a temperature sensor; 10. a gas pipeline; 11. a gas flow valve; 12. a combustion fan; 13. a second combustion-supporting air pipe; 14. a first combustion-supporting air pipe; 15. an air valve; 16. a smoke exhausting device; 161. a smoke exhaust duct; 162. a smoke exhaust fan; 17. a PLC; 18. a touch screen; 19. an alarm.
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, based on the examples in the application, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
Example 1
As shown in fig. 1 to 3, the invention discloses an incineration system for treating waste gas in a kiln, which comprises an incinerator 1, a gas device and a plurality of ignition devices 7, wherein one side of the incinerator 1 is provided with a gas inlet 6 for waste gas, the incinerator 1 is divided into a first combustion chamber 3, a second combustion chamber 4 and a third combustion chamber 5 which are communicated in sequence, the ignition devices 7 are respectively arranged in the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5, the gas device comprises a combustion-supporting pipeline, a combustion-supporting fan 12 and a gas pipeline 10, the gas pipeline 10 is communicated with the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5, the gas pipeline is respectively communicated with the first combustion chamber 3, the second combustion chamber 4, the third combustion chamber 5 and each ignition device 7 for providing air, and the waste gas is fully reacted after the waste gas passes through combustion reactions of the respective combustion chambers, thereby improving the conversion efficiency and the conversion quantity of the waste gas.
Preferably, the incinerator further comprises a smoke exhaust device 16, the smoke exhaust device 16 comprises a smoke exhaust pipeline 161 and a smoke exhaust fan 162, one end of the smoke exhaust pipeline 161 is connected with the third combustion chamber 5, the other end of the smoke exhaust pipeline is connected with the smoke exhaust fan 162, the smoke exhaust fan 162 is a centrifugal fan, the incinerated gas can be rapidly extracted from the incinerator 1, and the diameter of the smoke exhaust pipeline 161 is smaller than that of the incinerator 1, so that the effect of converging the gas is achieved.
Preferably, the temperature control device comprises a PLC (programmable logic controller) 17, an alarm 19, a touch screen 18 and a plurality of temperature sensors 9, wherein the alarm 19 and the touch screen 18 are respectively and electrically connected with the PLC17, the temperature sensors 9 are respectively installed in the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5 and are used for monitoring real-time temperature in each combustion chamber, instant adjustment is convenient, the touch screen 18 is used for monitoring the temperature state of the incinerator 1 in real time and setting combustion control parameters, and the alarm 19 is used for overtemperature alarm.
The temperature sensor 9 is a thermocouple, and has large temperature measurement range and strong stability.
The touch screen 18 has the following functions, among others: a display and status monitoring function which can be used to display temperature, flow rate, gas supply amount and air amount information of each combustion chamber; the real-time alarm function, when the incinerator has problems and faults or the control system has errors, the touch screen can be displayed, the alarm 19 is controlled to give out alarm sounds to prompt an operator, and various treatment schemes are provided, so that the operator can select and correctly treat the problems; the digital input function, using the digital input function, inputs parameters required by the control system, such as temperature control, air volume control, opening control of the gas flow valve 11, and flow control of the smoke exhaust device 16, and the touch screen 18 can replace a switch to realize the control function and improve the safety of operators.
Further, a gas flow valve 11 is provided between the gas pipe 10 and the incinerator 1, the gas flow valve 11 is used for controlling the amount of gas injected into the incinerator 1, the gas flow valve 11 is an electromagnetic valve, the characteristics of high response speed and accurate action are achieved, the gas pipe 10 supplies gas to the ignition device 7, the temperature in each combustion chamber is maintained to be stable through the heat generated by the gas combustion reaction, the waste gas is combusted with air at high temperature to be solidified, and the waste is separated from the gas, so that the purpose of harmless waste gas is achieved.
Preferably, the combustion-supporting pipeline comprises a first combustion-supporting air pipe 14 and a second combustion-supporting air pipe 13, the second combustion-supporting air pipe 13 and the first combustion-supporting air pipe 14 are connected with the combustion-supporting fan 12, the first combustion-supporting air pipe 14 is respectively connected with the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5, air valves 15 are arranged between the first combustion-supporting air pipe 14 and the first combustion chamber 3, between the first combustion-supporting air pipe 14 and the second combustion chamber 4 and between the first combustion-supporting air pipe and the third combustion chamber 5, the air valves 15 are used for controlling the air quantity injected into the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5, the effects of cooling and oxygen supplying are achieved, and the first combustion-supporting air pipe 13 is communicated with the plurality of ignition devices 7 to provide oxygen for ignition.
Preferably, an igniter 8 is arranged in the ignition device 7, the ignition device 7 is provided with a shell fixed on the inner wall of each combustion chamber, the igniter 8 is used for igniting fuel gas, the igniter 8 is controlled by the PLC17, and the ignition time of the igniter 8 is controlled to control the occurrence process of a combustion reaction, so that the temperature in the combustion chamber is stabilized.
Preferably, the air valve 15 is electrically connected with the PLC17, the smoke exhaust fan 162 and the combustion-supporting fan 12 are both electrically connected with the PLC17, the air valve 15 is used for respectively controlling the air amount of the first combustion-supporting air pipe 14, which is supplied to each combustion chamber and reacts with the exhaust gas, and the combustion-supporting fan 12 can increase the air supply amount so as to ensure that the exhaust gas reacts with the air at high temperature sufficiently, and the conversion efficiency of the waste is improved.
Further, the incinerator 1 further comprises a slow flow wall 2, the slow flow wall 2 is arranged between the first combustion chamber 3 and the second combustion chamber 4, the slow flow wall 2 is arranged between the second combustion chamber 4 and the third combustion chamber 5, the slow flow wall 2 is in a grid shape, the size of the grid of the slow flow wall 2 is changed, the flow speed of waste gas can be reduced, the reaction time of the waste gas passing through each combustion chamber is controlled, the conversion efficiency of the waste gas is improved on the premise that the reaction of the waste gas is ensured to be full, and the atmospheric pollution can be effectively reduced.
The slow flow wall 2 is built by alumina bricks, the alumina bricks are high-temperature resistant and are installed by adopting a building process, the building engineering can be carried out in the existing incinerator 1 without thoroughly replacing the existing incineration system, the aim of reducing the reconstruction cost of equipment is achieved, and the incineration method can be widely applied.
Example two
Referring specifically to fig. 2 and 3, the invention also discloses a method for incinerating waste gas of a lithium electric kiln, which comprises the following steps:
s1, air inlet: the waste gas in the lithium electric kiln enters the first combustion chamber 3 of the incinerator 1 through the air inlet 6, and the waste gas in the lithium electric kiln is directly discharged to the first combustion chamber 3 to play a role in continuously carrying out waste gas treatment;
s2, primary combustion: the combustion-supporting pipeline and the gas pipeline 10 are used for introducing gas and air into the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5, the ignition device 7 in the first combustion chamber 3 is used for igniting, the temperature in the first combustion chamber 3 is increased, the temperature is stabilized in a certain range, and the waste gas is subjected to primary combustion;
in step S2, the temperature of the second combustion chamber 4 and the third combustion chamber 5 is raised after the ignition device 7 ignites the fuel gas, and the temperature of the second combustion chamber 4 and the third combustion chamber 5 is controlled to be maintained within a certain range by controlling the supply amount and the ignition timing of the fuel gas and the air inlet of the combustion-supporting pipeline;
s3, continuous reburning: the waste gas enters the second combustion chamber 4 after preliminary combustion in the first combustion chamber 3, the ignition device 7 in the second combustion chamber 4 ignites, the waste gas is burned again, the residual waste gas after combustion enters the third combustion chamber 5, and the ignition device 7 in the third combustion chamber 5 ignites to burn the residual waste gas again;
in step S3, the temperatures of the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5 are different, the flow speed of the exhaust gas is reduced when the exhaust gas passes through the two adjacent combustion chambers, and the residence time of the exhaust gas in the second combustion chamber 4 and the third combustion chamber 5 is increased;
s4, exhausting: the gas obtained after the three combustion reactions is discharged to the atmosphere through the exhaust duct 161.
The flow velocity of the waste gas is reduced in the incinerator 1, and the effect of thoroughly converting the waste gas is achieved through three-stage combustion, so that the pollution of the waste gas to the atmosphere is effectively reduced, and the requirement of environmental protection development is met.
The method for incinerating the lithium electricity kiln waste gas comprises the following specific processes:
the waste gas of the lithium electric kiln enters the first combustion chamber 3 of the incinerator 1 through the air inlet 6, the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5 are heated to a certain temperature through a gas combustion reaction, the temperature in each combustion chamber is stabilized in a set temperature range, the waste gas is burnt through the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5 in sequence, when passing through two adjacent combustion chambers, the flow speed of the waste gas is slowed down, the reaction time of the waste gas in the second combustion chamber 4 and the third combustion chamber 5 is prolonged, and finally the burnt gas is discharged into the atmosphere through the smoke exhaust pipeline 161.
The temperature control process of the incinerator 1 is as follows:
the starting temperatures of the igniters 8 in the first combustion chamber 3, the second combustion chamber 4 and the third combustion chamber 5 are BR1, BR2 and BR3, the closing temperatures are BS1, BS2 and BS3, when the burning system is operated, the PLC17 controls the smoke exhaust fan 162 and the combustion fan 12 to be opened, waste gas enters the first combustion chamber 3 of the burning furnace 1 through the air inlet 6 by the lithium electric kiln, when the PLC17 detects that the temperature T1 fed back by the temperature sensor 9 in the first combustion chamber 3 is smaller than the ignition temperature starting value BR1, the PLC17 controls the igniters 8 in the first combustion chamber 3 to start, the gas is ignited, the temperature in the first combustion chamber 3 rises, when the PLC17 receives that the temperature T1 of the temperature sensor 9 is larger than the stop temperature BS1, the PLC17 controls the igniters 8 in the first combustion chamber 3 to be closed, the starting modes of the igniters 8 in the second combustion chamber 4 and the third combustion chamber 5 are consistent with the starting modes of the igniters 8 in the first combustion chamber 3, and the temperature of each combustion chamber in the burning furnace 1 is ensured to be between the starting value and the stop value, and the continuous combustion of the waste gas can be obtained.
Before the incineration system is started, starting temperature values CR1, CR2 and CR3 and stopping temperature values CS1, CS2 and CS3 of three air valves 15 are required to be set on a touch screen 18, when the PLC17 receives that the feedback temperature T1 of the temperature sensor 9 is higher than the starting temperature value CR1 of the air valve 15, the PLC17 controls the air valve 15 corresponding to the first combustion chamber 3 to be opened, air enters the first combustion chamber 3 through a combustion-supporting pipeline to cool, when the PLC17 receives that the temperature T1 fed back by the temperature sensor 9 is lower than the stopping temperature value CS1 of the air valve 15, the PLC17 controls the air valve 15 corresponding to the first combustion chamber 3 to be closed, the opening and closing modes of the air valves 15 of the second combustion chamber 4 and the third combustion chamber 5 are consistent with those of the first combustion chamber 3, so that the temperatures in all combustion chambers are always stable within a certain temperature range, the waste gas can be stably incinerated, and the conversion rate and conversion quantity of the waste gas are improved.
The method for incinerating the waste gas of the lithium electric kiln can be applied to an incineration system for treating the waste gas in the kiln.
Variations and modifications to the above would be obvious to persons skilled in the art to which the invention pertains from the foregoing description and teachings. Therefore, the invention is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the invention should be also included in the scope of the claims of the invention. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present invention in any way.
Claims (10)
1. An incineration system for treating waste gas in a kiln, which is characterized in that: including burning furnace (1), gas device and a plurality of ignition (7), one side of burning furnace (1) is equipped with air inlet (6) of waste gas, burn a plurality of combustion chambers that communicate in proper order are separated into to burning furnace (1), ignition (7) are installed respectively in a plurality of in the combustion chamber, gas device includes combustion-supporting pipeline, combustion-supporting fan (12) and gas pipeline (10), gas pipeline (10) respectively with a plurality of combustion chamber intercommunication, and respectively to a plurality of the combustion chamber provides the gas, combustion-supporting pipeline respectively with a plurality of combustion chamber and each ignition (7) intercommunication is used for providing the air.
2. An incineration system for treating waste gas in a kiln according to claim 1, characterised in that:
the incinerator further comprises a smoke exhaust device (16), the smoke exhaust device (16) comprises a smoke exhaust pipeline (161) and a smoke exhaust fan (162), one end of the smoke exhaust pipeline (161) is connected with the combustion chamber at the outermost side of the incinerator (1), and the other end of the smoke exhaust pipeline is connected with the smoke exhaust fan (162).
3. An incineration system for treating waste gas in a kiln according to claim 2, characterised in that:
still include temperature regulating device and fume extractor (16), temperature regulating device includes PLC (17), alarm lamp (19), touch-sensitive screen (18) and a plurality of temperature sensor (9), alarm lamp (19) with touch-sensitive screen (18) respectively with PLC (17) electricity is connected, a plurality of temperature sensor (9) with PLC (17) link to each other, a plurality of temperature sensor (9) are installed respectively in the combustion chamber, touch-sensitive screen (18) are used for real-time supervision the temperature state of incinerator (1) and set for burning control parameter, alarm lamp (19) are used for the overtemperature warning.
4. An incineration system for treating waste gas in a kiln according to claim 3, characterised in that:
a gas flow valve (11) is arranged between the pipeline (10) and the incinerator (1), and the gas flow valve (11) is used for controlling the gas flow injected into the incinerator (1).
5. An incineration system for treating waste gas in a kiln according to claim 3, characterised in that:
the combustion-supporting pipeline comprises a first combustion-supporting air pipe (14) and a second combustion-supporting air pipe (13), the first combustion-supporting air pipe (14) and the second combustion-supporting air pipe (13) are connected with the combustion-supporting fan (12), the first combustion-supporting air pipe (14) is respectively connected with a plurality of combustion chambers, air valves (15) are arranged between the first combustion-supporting air pipe (14) and the combustion chambers, the air valves (15) are used for controlling the air quantity injected into the combustion chambers, and the second combustion-supporting air pipe (13) is communicated with a plurality of ignition devices (7).
6. An incineration system for treating waste gas in a kiln according to claim 5, characterised in that:
an igniter (8) is arranged in the ignition device (7), and the igniter (8) is used for igniting fuel gas.
7. The incineration system for treating waste gas in a kiln according to claim 6, wherein:
the air valve (15) is electrically connected with the PLC (17), and the smoke exhaust fan (162) and the combustion-supporting fan (12) are electrically connected with the PLC (17).
8. An incineration system for the treatment of waste gas in a kiln according to any one of the claims 1-7, characterised in that:
the incinerator (1) further comprises a slow flow wall (2), and the slow flow wall (2) is arranged between two adjacent combustion chambers.
9. The incineration system for treating waste gas in a kiln according to claim 8, wherein:
the slow flow wall (2) is grid-shaped, and the slow flow wall (2) is built by aluminum oxide bricks.
10. The waste gas incineration method of the lithium electric kiln is characterized by comprising the following steps of:
s1, air inlet: waste gas in the lithium electric kiln enters a first combustion chamber (3) of the incinerator (1) through an air inlet (6);
s2, primary combustion: the combustion-supporting pipeline and the gas pipeline (10) are used for introducing gas and air into the first combustion chamber (3), the second combustion chamber (4) and the third combustion chamber (5), an ignition device (7) in the first combustion chamber (3) ignites, and waste gas is subjected to primary combustion;
s3, continuous reburning: the waste gas enters a second combustion chamber (4) after preliminary combustion of the first combustion chamber (3), an ignition device (7) in the second combustion chamber (4) ignites, the waste gas is combusted again, the residual waste gas after combustion enters a third combustion chamber (5), and the ignition device (7) in the third combustion chamber (5) ignites the residual waste gas again;
s4, exhausting: the gas obtained by the three combustion reactions is discharged to the atmosphere through a smoke discharge pipe (161).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310744239.9A CN116557883A (en) | 2023-06-21 | 2023-06-21 | Incineration system and incineration method for treating waste gas in kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310744239.9A CN116557883A (en) | 2023-06-21 | 2023-06-21 | Incineration system and incineration method for treating waste gas in kiln |
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| Publication Number | Publication Date |
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| CN116557883A true CN116557883A (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310744239.9A Pending CN116557883A (en) | 2023-06-21 | 2023-06-21 | Incineration system and incineration method for treating waste gas in kiln |
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| Country | Link |
|---|---|
| CN (1) | CN116557883A (en) |
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2023
- 2023-06-21 CN CN202310744239.9A patent/CN116557883A/en active Pending
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