CN110307552B - Organic fluorine three-waste combined incineration system and control method - Google Patents

Organic fluorine three-waste combined incineration system and control method Download PDF

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Publication number
CN110307552B
CN110307552B CN201910387326.7A CN201910387326A CN110307552B CN 110307552 B CN110307552 B CN 110307552B CN 201910387326 A CN201910387326 A CN 201910387326A CN 110307552 B CN110307552 B CN 110307552B
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controller
waste
converter
flow
combustion
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CN110307552A (en
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陈晓芳
余道腾
苏光宝
徐万鑫
徐美燚
靳艾霞
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Fujian Sannong New Materials Co ltd
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Fujian Sannong New Materials Co ltd
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    • 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
    • F23G5/442—Waste feed arrangements
    • 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
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/20—Waste supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/30—Oxidant supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/10—Liquid waste
    • 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
    • F23G2209/142—Halogen gases, e.g. silane

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention belongs to the technical field of waste treatment, and discloses a combined incineration system and a control method for three wastes (organic fluorine, three wastes), wherein a controller T1C adjusts natural gas quantity F1 according to a set value of a converter temperature T1, and a controller F2C adjusts air quantity supplemented by matching of the frequency of a combustion fan motor according to the natural gas quantity F1; the controller F3C1 changes the frequency of a converter driving motor to adjust the rotating speed of the converter, the controller F4C changes the valve opening to control the waste liquid flow F4, the controller F5C changes the valve control waste gas flow F5, the controller F6C changes the valve opening to control the compressed air flow F6, the natural gas flow controller F7C adjusts the natural gas flow F7, and the controller F8C adjusts the natural gas flow F7 and the mixed flow FM 2. According to the invention, through combining all parts of the incineration device, the continuous and stable incineration of the three wastes can be realized, the occupational risks of three-waste treatment personnel are greatly reduced, and the investment cost and the operation management cost for the three-waste treatment are greatly reduced.

Description

Organic fluorine three-waste combined incineration system and control method
Technical Field
The invention belongs to the technical field of waste treatment, and particularly relates to an organic fluorine three-waste combined incineration system and a control method.
Background
Currently, the closest prior art in the industry:
in the various system processes of organic fluorine fine chemistry industry, a few waste gases, waste liquids and waste solids with various qualities exist, and some of the waste gases, the waste liquids and the waste solids have high harmfulness and high treatment difficulty and need side bottom incineration treatment.
At present, enterprises adopt different processes for waste solid, waste liquid and waste gas, and different process systems need to be operated; because the amount is small, the organic fluorine three wastes are stored firstly and then burnt, and because the problems of complex composition, high toxicity, small batch, unsuitability for long-distance transportation, long-time storage, high risk of treatment and the like exist, the risk is greatly improved; and waste liquid and waste gas are burnt and switched to operate, the occupational risk of switching operators is high due to high toxicity of most of the three wastes, and meanwhile, the switching and burning efficiency is low and the energy consumption is high.
In summary, the problems of the prior art are as follows:
(1) the solid waste, the waste liquid and the waste gas are firstly stored and then are burnt, so that the risk is high;
(2) the waste liquid and waste gas burning is switched to operate, and due to the fact that most of the three wastes are high in toxicity, occupational risks of switching operators are high, and meanwhile, the switching burning efficiency is low and energy consumption is high.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a combined incineration system for three wastes (organic fluorine and waste gas) and a control method.
The invention is realized in this way, a control method of a combined incineration system for three wastes of organic fluorine comprises the following steps:
the controller T1C adjusts the natural gas quantity F1 according to the set value of the converter temperature T1, the temperature T1 is finally controlled at a constant value by changing the combustion heat, and the controller F2C adjusts the air quantity matched and supplemented by the frequency of a combustion fan motor according to the natural gas quantity F1;
the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids converter to change the instantaneous gas production;
the gas production controller F3C2 is used for changing the frequency of a waste solid feeding screw driving motor to adjust the feeding speed M1 and controlling the total gas production F3 in a specific time period of the converter;
a controller F4C controls the waste liquid flow rate F4 by changing the valve opening, and a controller F5C controls the waste gas flow rate F5, F3\ F4\ F5 by changing the valve opening to obtain the mixed flow rate FM2 ═ F (F1, F2, F3) by a calorific value algorithm;
the controller F6C controls the flow rate of the compressed air F6 by changing the opening degree of the valve, and provides atomization mixing power according to the mixing flow rate FM2 to uniformly mix the three wastes;
the natural gas flow controller F7C adjusts the natural gas flow F7 according to the mixed flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace;
the controller F8C adjusts the motor frequency of the combustion fan according to the natural gas flow F7 and the mixed flow FM2 to supplement the air quantity for the vertical combustion furnace;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 pa to-20 pa by adjusting the frequency of a draught fan motor, and the vertical combustion furnace negative pressure P2 is-1000 pa to-100 pa;
after the command center system collects the information, the selected system environment-friendly operation parameters, the system equipment state parameters, the output matching parameters, the three-waste physical property parameters and the fault diagnosis parameters are compared and analyzed, and command information is sent out.
Further, controlling the temperature of T1 to be 600-900 ℃;
the gas production rate is continuously kept constant at a set value of 20-80 kg/h by adjusting F3C1 and F3C 2;
F3C \ F4C \ F5 is adjusted together according to the system instruction to make FM2 be 100-800 kg/h;
t2 is controlled at the temperature of 800-1500 ℃;
the air proportioning range is 1% -20% of the excess coefficient;
the PIC value of the system negative pressure controller is as follows: 30-45 HZ.
Further, the command information sent by the command center system includes a time interval operation control range of the feeding speeds M1 and F3 of the cracking control system, a time interval operation control range of the mixing flow FM2 of the three-waste mixing control system, a time interval operation control range of the combustion furnace temperature T2 of the combustion control system, a time interval operation control range of the cracking converter pressure P1 of the environmental protection index control system and the negative pressure P2 of the vertical combustion furnace, an integral operation state and a vacant load parameter.
The invention also aims to provide an organic fluorine three-waste combined incineration system, which comprises:
the cracking control system is characterized in that a controller T1C regulates natural gas quantity F1 according to a set value of converter temperature T1, the temperature T1 is finally controlled at a constant value by changing combustion heat, and a controller F2C regulates the frequency of a combustion fan motor to match with supplemented air quantity according to the natural gas quantity F1; the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids converter to change the instantaneous gas production; the gas production controller F3C2 is used for changing the frequency of a waste solid feeding screw driving motor to adjust the feeding speed M1 and controlling the total gas production F3 in a specific time period of the converter;
a three-waste mixing control system, wherein a controller F4C is used for controlling the flow rate of waste liquid F4 by changing the opening degree of a valve, a controller F5C is used for controlling the flow rate of waste gas F5, F3\ F4\ F5 to obtain the mixed flow rate FM2 ═ F (F1, F2 and F3) by a heat value algorithm;
in the compression flow control system, a controller F6C controls the flow of compressed air F6 by changing the opening degree of a valve, and provides atomization hybrid power according to the mixed flow FM2 to uniformly mix the three wastes;
the combustion control system is used for controlling the temperature T2 of the combustion furnace, the natural gas flow F7 as an auxiliary object and the mixed flow FM2 as a feed-forward amount, and the natural gas flow F7C is adjusted by the natural gas flow controller F7 according to the mixed flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace; the controller F8C adjusts the motor frequency of the combustion fan according to the natural gas flow F7 and the mixed flow FM2 to supplement the air quantity for the vertical combustion furnace;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 pa to-20 pa by adjusting the frequency of a draught fan motor, and the vertical combustion furnace negative pressure P2 is-1000 pa to-100 pa;
the environment-friendly index control system is used for controlling the pressure P1 of the cracking converter, the negative pressure P2 of the vertical combustion furnace, the on-line smoke monitoring value TM and the PIC value of the system negative pressure controller and reflecting the load performance state of the combustion system together;
the intelligent control system of the device acquires the information through the command center system, compares and analyzes the selected system environment-friendly operation parameters, the system equipment state parameters, the yield matching parameters, the three-waste physical property parameters and the fault diagnosis parameters, and sends out instruction information.
Further, the cracking control system comprises a converter temperature T1 control system and a gas production flow F3 control system; the converter temperature T1 control system comprises a furnace temperature-natural gas flow cascade control system and a natural gas-air flow ratio control system;
the three-waste mixing control system comprises a waste liquid flow control system, a waste gas flow control system and a waste solid plant gas flow control system.
The invention also aims to provide organic fluorine three wastes combined incineration equipment for implementing the control method of the organic fluorine three wastes combined incineration system, and the organic fluorine three wastes combined incineration equipment comprises:
a waste solid cracking converter, a vertical combustion furnace, a waste heat boiler and a washing and purifying device;
a first burner is fixed at the position of a furnace head of the waste solid cracking converter through a bolt, a waste solid feeder is fixed at the position of a furnace tail of the waste solid cracking converter through a bolt, a waste residue discharge port is formed at the lower end of the waste solid cracking converter, a gas phase closed cover is fixed at the upper end of the waste solid feeder through a bolt, and the gas phase closed cover is communicated with a Venturi mixer through a gas guide pipe;
the Venturi mixer is fixed at the upper end of the vertical combustion furnace through a bolt, the Venturi mixer is also communicated with a waste liquid input pipeline, a waste gas input pipeline and a compressed air input pipeline, and the left end of the vertical combustion furnace is connected with a second combustor through a bolt;
the right end of the vertical combustion furnace is communicated with a waste heat boiler through a pipeline, the waste heat boiler is communicated with a washing and purifying device through a pipeline, the washing and purifying device is communicated with an induced draft fan through a pipeline, the induced draft fan is further communicated with a chimney through a pipeline, the first combustor is communicated with a natural gas input pipeline through a controller T1C and a flowmeter F1, and the controller T1C and the flowmeter F1 are both connected with a thermometer T1 at the upper end of a waste solid cracking converter; the second burner is in communication with the natural gas input line via a controller F7C and a flow meter F7.
Further, the waste solid cracking converter is communicated with a negative pressure meter P1, the vertical combustion furnace is communicated with a negative pressure meter P2, the negative pressure meter P1 and the negative pressure meter P2 are both connected with a negative pressure controller P1C, and the negative pressure controller P1C is electrically connected with an induced draft fan.
Further, the waste liquid input pipe is communicated with a flow meter F4 and a controller F4C which are electrically connected, the waste gas input pipe is communicated with a flow meter F5 and a controller F5C which are electrically connected, and the compressed air input pipe is communicated with a flow meter F6 and a controller F6C which are electrically connected.
Further, a rotating motor is fixed at the lower end of the waste solid cracking converter through a bolt, a feeding screw is fixed inside the waste solid feeder through a rotating shaft, the rotating motor is fixed at the right end of the feeding screw through a bolt, and the right side of the waste solid feeder is connected with a lifting machine through a bolt;
the rotary motor is electrically connected with a controller F3C1, the rotary motor is electrically connected with a controller F3C2, the controller F3C1 and the controller F3C2 are electrically connected with a flow meter F3 through a controller F3C, and the flow meter F3 is communicated with the air guide pipe;
the bottom of the vertical combustion furnace is communicated with a thermometer T2 and a first pressure gauge through a pipeline;
the first combustor is communicated with a first combustion-supporting fan through an air pipe, a flow meter F2 is communicated between the first combustor and the first combustion-supporting fan, the first combustion-supporting fan is connected with a controller F2C, the middle parts of the furnace head and the furnace of the vertical combustion furnace are both communicated with a second combustion-supporting fan through air pipes, a flow meter F8 is connected between the vertical combustion furnace and the second combustion-supporting fan, and the second combustion-supporting fan is connected with a controller F8C, a second pressure gauge and a flow meter F7.
In summary, the advantages and positive effects of the invention are:
the solid waste can be cracked through a waste solid cracking converter, the cracked waste residue is discharged from the lower part of a furnace end, the cracked gas phase is discharged from a gas phase closed cover above the feeding of a furnace tail, the waste liquid and the waste gas enter a Venturi mixer through a pipeline, the mixture is sprayed into a vertical combustion furnace for combustion, the three wastes are fully combusted in the vertical combustion furnace, the formed high-temperature flue gas and a small amount of fly ash enter a waste heat absorption system to release heat, the temperature is reduced to 100-300 ℃, the flue gas enters a washing and purifying system, and the flue gas and F, CL elements are removed in the washing and purifying system and then the flue gas and the fly ash are discharged through a chimney after reaching the standard; according to the invention, through combining all parts of the incineration device, the continuous and stable incineration of the three wastes can be realized, the problem of three-waste treatment is solved, the intellectualization of the three-waste treatment is realized, the occupational risk of three-waste treatment personnel is greatly reduced, the condition that enterprises need to establish two or three systems at the same time to carry out discontinuous incineration is also solved, and the investment cost and the operation management cost for the three-waste treatment are greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a combined incineration device for three wastes (organic fluorine and waste gas) provided by an embodiment of the invention;
in the figure: 1. a spent solids cracking converter; 2. a vertical combustion furnace; 3. a waste heat boiler; 4. a washing and purifying device; 5. a first burner; 6. a spent solids feeder; 7. a waste residue discharge port; 8. a gas phase enclosure; 9. an air duct; 10. a venturi mixer; 11. a waste liquid input pipeline; 12. an exhaust gas input conduit; 13. a compressed air input duct; 14. a second combustor; 15. an induced draft fan; 16. a chimney; 17. a natural gas input pipeline; 18. rotating the motor; 19. a feed screw; 20. a rotating electric machine; 21. a hoist; 22. a first pressure gauge; 23. a first combustion fan; 24. and a second combustion-supporting fan.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The solid waste, the waste liquid and the waste gas are firstly stored and then are burnt, so that the risk is high; the waste liquid and waste gas burning is switched to operate, and due to the fact that most of the three wastes are high in toxicity, occupational risks of switching operators are high, and meanwhile, the switching burning efficiency is low and energy consumption is high.
In order to solve the above technical problems, the present invention will be described in detail with reference to specific embodiments.
The embodiment of the invention provides a control method of an organic fluorine three-waste combined incineration system, which comprises the following steps:
the controller T1C adjusts the natural gas quantity F1 according to the set value of the converter temperature T1, the temperature T1 is finally controlled at a constant value by changing the combustion heat, and the controller F2C adjusts the air quantity matched and supplemented by the frequency of a combustion fan motor according to the natural gas quantity F1;
the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids converter to change the instantaneous gas production;
the gas production controller F3C2 is used for changing the frequency of a waste solid feeding screw driving motor to adjust the feeding speed M1 and controlling the total gas production F3 in a specific time period of the converter;
a controller F4C controls the waste liquid flow rate F4 by changing the valve opening, and a controller F5C controls the waste gas flow rate F5, F3\ F4\ F5 by changing the valve opening to obtain the mixed flow rate FM2 ═ F (F1, F2, F3) by a calorific value algorithm;
the controller F6C controls the flow rate of the compressed air F6 by changing the opening degree of the valve, and provides atomization mixing power according to the mixing flow rate FM2 to uniformly mix the three wastes;
the natural gas flow controller F7C adjusts the natural gas flow F7 according to the mixed flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace;
the controller F8C adjusts the motor frequency of the combustion fan according to the natural gas flow F7 and the mixed flow FM2 to supplement the air quantity for the vertical combustion furnace;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 pa to-20 pa by adjusting the frequency of a draught fan motor, and the vertical combustion furnace negative pressure P2 is-1000 pa to-100 pa;
after the command center system collects the information, the selected system environment-friendly operation parameters, the system equipment state parameters, the output matching parameters, the three-waste physical property parameters and the fault diagnosis parameters are compared and analyzed, and command information is sent out.
T1 controlling the temperature to be 600-900 ℃;
the gas production rate is continuously kept constant at a set value of 20-80 kg/h by adjusting F3C1 and F3C 2;
F3C \ F4C \ F5 is adjusted together according to the system instruction to make FM2 be 100-800 kg/h;
t2 is controlled at the temperature of 800-1500 ℃;
the air proportioning range is 1% -20% of the excess coefficient;
the PIC value of the system negative pressure controller is as follows: 30-45 HZ.
The command information sent by the command center system comprises time interval operation control ranges of the feeding speeds M1 and F3 of the cracking control system, time interval operation control ranges of the mixing flow FM2 of the three-waste mixing control system, time interval operation control ranges of the temperature T2 of the combustion control system combustion furnace, time interval operation control ranges of the cracking converter pressure P1 and the vertical combustion furnace negative pressure P2 of the environmental protection index control system, the whole operation state and the vacant load parameters.
The combined incineration system for the three wastes of organic fluorine provided by the embodiment of the invention combines all parts of the incineration device through a cracking control system, a three-waste mixing control system, a combustion control system, an environmental protection index control system, a device intelligent control system and a command center system, thereby realizing the continuous and stable incineration of the three wastes. The cracking control system, the three-waste mixing control system, the combustion control system and the environmental protection index control system are lower subsystems of the intelligent control system of the device; the intelligent control system of the device is a lower subsystem of the command center system.
Cracking control system
The cracking control system consists of a converter temperature T1 control system and a gas production flow F3 control system; the converter temperature T1 control system comprises a furnace temperature-natural gas flow cascade control system and a natural gas-air flow ratio control system. The controller T1C adjusts the natural gas quantity F1 according to the set value of the converter temperature T1, and finally controls the temperature T1 to be a constant value and the control range of T1 to be 600-900 ℃ by changing the combustion heat; the controller F2C adjusts the frequency of the combustion fan motor to match the supplemented air quantity according to the natural gas quantity F1;
the gas production flow F3 control system is a range control system. The gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids furnace to change the instantaneous gas production; the feeding speed M1 is adjusted by changing the frequency of a waste solid feeding screw driving motor through F3C2, and the total gas production rate F3 in a specific time period of the converter is controlled; the gas production rate is continuously kept constant at a set value of 20-80 kg/h by adjusting F3C1 and F3C 2;
three wastes mixes control system
A three-waste mixing control system; the system comprises a waste liquid flow control system, a waste gas flow control system and a waste solid plant gas flow control system; a compression flow control system; the controller F4C controls the waste liquid flow F4 by changing the valve opening, the controller F5C controls the waste gas flow F5 by changing the valve, and the controller F3\ F4\ F5 obtains the mixed flow FM2 ═ F (F1, F2, F3) by a heat value algorithm, and the controller F3C \ F4C \ F5 jointly adjusts the FM2 to be between 100 and 800kg/h according to a system instruction;
in the compression flow control system, the controller F6C controls the flow of compressed air F6 by changing the opening degree of a valve, and provides atomization hybrid power according to the mixed flow FM2 to ensure the uniformity of three wastes mixing;
combustion control system
The combustion control system is a cascade-feedforward control system, the main object is the temperature T2 of the combustion furnace, the auxiliary object is the natural gas flow F7, and the feedforward amount is the mixed flow FM 2. Regulating the natural gas flow F7 by a natural gas flow controller F7C according to the mixing flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace, wherein the temperature T2 is controlled between 1200 and 1400 ℃;
the controller F8C adjusts the motor frequency of the combustion fan 2 according to the natural gas flow F7 and the mixed flow FM2 to provide proper supplementary air quantity for the vertical combustion furnace, and the air proportioning range is 5-10% of the excess coefficient;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 pa to-20 pa by adjusting the frequency of a draught fan motor, and the vertical combustion furnace negative pressure P2 is-1000 pa to-100 pa; the whole combustion system is ensured to be operated under negative pressure, and leakage of returned gas is prevented;
environmental protection index control system:
the environmental protection index control system comprises a cracking converter pressure P1, a vertical combustion furnace negative pressure P2, a flue gas online monitoring value TM and a system negative pressure controller PIC value which jointly reflect the load performance state of the combustion system, and when the performance of the combustion system is reduced along with the extension of the operation time, the mixed flow FM2 instruction value is adjusted in time; the safe and stable operation of the combustion system is ensured. P1 control interval: -100pa to-20 pa; p2 control interval: -300pa to-200 pa; the flue gas on-line monitoring value TM has indexes not exceeding the national standard, and the system negative pressure controller PIC value: 30-45 HZ.
Intelligent control system for device
The intelligent control system of the device operates according to the command of a command center system, selects system environment-friendly operation parameters, system equipment state parameters, yield matching parameters, three-waste physical parameters, fault diagnosis parameters and the like, and provides target parameters for each subsystem, the time interval operation control range of the feeding speeds M1 and F3 of the cracking control system, the time interval operation control range of the mixing flow FM2 of the three-waste mixing control system, the time interval operation control range of the combustion control system combustion furnace temperature T2, and the time interval operation control range of the cracking converter pressure P1 and the vertical combustion furnace negative pressure P2 of the environment-friendly index control system. And parameters such as the whole running state, the vacant load and the like are provided for the command center, and system guarantee is provided for a command center system.
As shown in fig. 1, the combined incineration equipment for three wastes of organic fluorine provided by the embodiment of the present invention includes: the device comprises a waste solid cracking converter 1, a vertical combustion furnace 2, a waste heat boiler 3, a washing and purifying device 4, a first combustor 5, a waste solid feeder 6, a waste residue discharge port 7, a gas phase closed cover 8, a gas guide pipe 9, a Venturi mixer 10, a waste liquid input pipeline 11, a waste gas input pipeline 12, a compressed air input pipeline 13, a second combustor 14, an induced draft fan 15, a chimney 16, a natural gas input pipeline 17, a rotating motor 18, a feeding screw 19, a rotating motor 20, a lifting machine 21, a first pressure gauge 22, a first combustion fan 23 and a second combustion fan 24.
A first burner 5 is fixed at the furnace end of the waste solid cracking converter 1 through a bolt, a waste solid feeder 6 is fixed at the furnace tail of the waste solid cracking converter 1 through a bolt, a waste residue discharge port 7 is formed at the lower end of the waste solid cracking converter 11, a gas phase closed cover 8 is fixed at the upper end of the waste solid feeder 6 through a bolt, and the gas phase closed cover 8 is communicated with a venturi mixer 10 through a gas guide pipe 9;
the venturi mixer 10 is fixed at the upper end of the vertical combustion furnace 22 through bolts, the venturi mixer 10 is also communicated with a waste liquid input pipeline 11, a waste gas input pipeline 12 and a compressed air input pipeline 13, and the left end of the vertical combustion furnace 2 is connected with a second combustor 14 through bolts;
the right end of the vertical combustion furnace 2 is communicated with the waste heat boiler 3 through a pipeline, the waste heat boiler 3 is communicated with the washing and purifying device 4 through a pipeline, the washing and purifying device 4 is communicated with an induced draft fan 15 through a pipeline, and the induced draft fan 15 is communicated with a chimney 16 through a pipeline.
In the embodiment of the invention, the first combustor 5 is communicated with the natural gas input pipeline 17 through a controller (regulating valve) T1C and a flowmeter F1, and the controller (regulating valve) T1C and the flowmeter F1 are both connected with a thermometer T1 at the upper end of the waste solid cracking converter 1; the second burner is in communication with the natural gas input line via a controller (regulator valve) F7C and a flow meter F7.
In the embodiment of the invention, the waste solid cracking converter 1 is communicated with a negative pressure gauge P1, the vertical combustion furnace 2 is communicated with a negative pressure gauge P2, the negative pressure gauge P1 and the negative pressure gauge P2 are both connected with a negative pressure controller P1C, and the negative pressure controller P1C is electrically connected with an induced draft fan.
In the embodiment of the present invention, the waste liquid input pipe 11 is communicated with an electrically connected flow meter F4 and a controller (regulating valve) F4C, the waste gas input pipe is communicated with an electrically connected flow meter F5 and a controller (regulating valve) F5C, and the compressed air input pipe 13 is communicated with an electrically connected flow meter F6 and a controller (regulating valve) F6C.
In the embodiment of the invention, the lower end of the waste solid cracking converter 1 is fixed with a rotating motor 18 through a bolt, the interior of the waste solid feeder 6 is fixed with a feeding screw 19 through a rotating shaft, the right end of the feeding screw 19 is fixed with a rotating motor 20 through a bolt, and the right side of the waste solid feeder 6 is connected with a lifter through a bolt;
the rotary motor is electrically connected with a controller (regulating valve) F3C1, the rotary motor is electrically connected with a controller (regulating valve) F3C2, the controller (regulating valve) F3C1 and the controller F3C2 are electrically connected with a flow meter F3 through a controller F3C, and the flow meter F3 is communicated with the air guide pipe 9.
In the embodiment of the invention, the bottom of the vertical combustion furnace 2 is communicated with a thermometer T2 and a first pressure gauge through pipelines.
In the embodiment of the invention, the first combustor 5 is communicated with a first combustion-supporting fan 23 through an air pipe, a flow meter F2 is communicated between the first combustor 5 and the first combustion-supporting fan 23, the first combustion-supporting fan 23 is connected with a controller (regulating valve) F2C, the furnace end and the furnace interior of the vertical combustion furnace 2 are communicated with a second combustion-supporting fan 24 through air pipes, the flow meter F8 is connected between the vertical combustion furnace 2 and the second combustion-supporting fan 24, and the controller F8C, a second pressure gauge and the flow meter F7 are connected with the second combustion-supporting fan 24.
The working principle of the invention is as follows:
when the vertical combustion furnace is used, solid waste is conveyed into the waste solid cracking converter 1 through the hoister 21 and the feeding screw 19 at the right end of the waste solid feeder 6, the waste solid cracking converter 1 is driven to rotate through the rotating motor 18, the waste solid cracking converter 1 is heated through the first combustor 5, cracked waste residue is discharged from a waste residue discharge port 7 below a furnace end, cracked gas phase is discharged from a gas phase closed cover 8 above a furnace tail feeding part, and cracked gas from waste solid cracking is mixed through the venturi mixer 10 of the vertical combustion furnace through the gas guide pipe 9 and enters the vertical combustion furnace 2 for further incineration; the waste liquid is connected into a Venturi mixer 10 through a waste liquid input pipeline 11, and is sprayed into the vertical combustion furnace 2 for combustion after being mixed; waste gas is connected into the venturi mixer 10 through a waste gas input pipeline 12, is sprayed into the vertical combustion furnace 2 after being mixed for combustion, and a second combustion-supporting fan 24 air pipe is respectively connected into the furnace end and the furnace interior to uniformly provide combustion-supporting air.
After the three wastes are fully combusted in the vertical combustion furnace 2, the formed high-temperature flue gas and a small amount of fly ash enter the waste heat boiler 3 to release heat, then the temperature is reduced to 100-300 ℃, the flue gas enters the washing and purifying device 4, and after a small amount of fly ash and F, CL elements are removed in the washing and purifying device 4, the flue gas is discharged through a chimney 16 after reaching the standard.
The controller T1C adjusts the natural gas quantity F1 according to the set value of the converter temperature T1, and finally controls the temperature T1 to be a constant value and the control range of T1 to be 600-900 ℃ by changing the combustion heat; the controller F2C adjusts the frequency of the combustion fan motor to match the supplemented air quantity according to the natural gas quantity F1; the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids furnace to change the instantaneous gas production; the feeding speed M1 is adjusted by changing the frequency of a waste solid feeding screw driving motor through F3C2, and the total gas production rate F3 in a specific time period of the converter is controlled; the gas production rate is continuously kept constant at a set value of 20-80 kg/h by adjusting F3C1 and F3C 2;
the controller F4C controls the waste liquid flow F4 by changing the valve opening, the controller F5C controls the waste gas flow F5 by changing the valve, and the controller F3\ F4\ F5 obtains the mixed flow FM2 ═ F (F1, F2, F3) by a heat value algorithm, and the controller F3C \ F4C \ F5 jointly adjusts the FM2 to be between 100 and 800kg/h according to a system instruction;
the controller F6C controls the flow rate of the compressed air F6 by changing the opening degree of the valve, and provides atomization mixing power according to the mixing flow rate FM2 to ensure the uniformity of mixing of the three wastes;
the natural gas flow controller F7C adjusts the natural gas flow F7 according to the mixing flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace, and the temperature T2 is controlled between 1200 ℃ and 1400 ℃;
the controller F8C adjusts the motor frequency of the combustion fan 2 according to the natural gas flow F7 and the mixed flow FM2 to provide proper supplementary air quantity for the vertical combustion furnace, and the air proportioning range is 5-10% of the excess coefficient;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 pa to-20 pa by adjusting the frequency of a draught fan motor, and the vertical combustion furnace negative pressure P2 is-1000 pa to-100 pa; the whole combustion system is ensured to be operated under negative pressure, and leakage of returned gas is prevented; the flue gas on-line monitoring value TM has indexes not exceeding the national standard, and the system negative pressure controller PIC value: 30-45 HZ.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (9)

1. A control method of an organic fluorine three wastes (waste gas, waste water and waste residues) combined incineration system is characterized by comprising the following steps:
the controller T1C adjusts the natural gas quantity F1 according to the set value of the converter temperature T1, the temperature T1 is finally controlled at a constant value by changing the combustion heat, and the controller F2C adjusts the air quantity F2 matched and supplemented by the frequency of a combustion fan motor according to the natural gas quantity F1;
the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids converter to change the instantaneous gas production;
the gas production controller F3C2 is used for changing the frequency of a waste solid feeding screw driving motor to adjust the feeding speed M1 and controlling the total gas production F3 in a specific time period of the converter;
a controller F4C controls the waste liquid flow rate F4 by changing the valve opening, and a controller F5C controls the waste gas flow rate F5, F3\ F4\ F5 by changing the valve opening to obtain the mixed flow rate FM2 ═ F (F1, F2, F3) by a calorific value algorithm;
the controller F6C controls the flow rate of the compressed air F6 by changing the opening degree of the valve, and provides atomization mixing power according to the mixing flow rate FM2 to uniformly mix the three wastes;
the natural gas flow controller F7C adjusts the natural gas flow F7 according to the mixed flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace;
the controller F8C adjusts the motor frequency of the combustion fan according to the natural gas flow F7 and the mixed flow FM2 to supplement the air quantity for the vertical combustion furnace;
the system negative pressure controller PIC controls the converter negative pressure P1 to be-300 Pa to-20 Pa and the vertical combustion furnace negative pressure P2 to be-1000 Pa to-100 Pa by adjusting the frequency of a draught fan motor;
after the command center system collects the information, the selected system environment-friendly operation parameters, system equipment state parameters, yield matching parameters, three-waste physical property parameters and fault diagnosis parameters are compared and analyzed, and command information is sent out;
the organic fluorine three wastes (waste gas, waste water and waste residues) combined incineration system for implementing the control method of the organic fluorine three wastes combined incineration system comprises the following steps:
the cracking control system is characterized in that a controller T1C regulates natural gas quantity F1 according to a set value of converter temperature T1, the temperature T1 is finally controlled at a constant value by changing combustion heat, and a controller F2C regulates the frequency of a combustion fan motor to match with supplemented air quantity according to the natural gas quantity F1; the gas production controller F3C changes the frequency of a driving motor of the converter through the controller F3C1 to adjust the rotating speed of the converter according to the gas production flow F3 of the converter, and changes the stir-frying times of the waste solids in the waste solids converter to change the instantaneous gas production; the gas production controller F3C2 is used for changing the frequency of a waste solid feeding screw driving motor to adjust the feeding speed M1 and controlling the total gas production F3 in a specific time period of the converter;
a three-waste mixing control system, wherein a controller F4C is used for controlling the flow rate of waste liquid F4 by changing the opening degree of a valve, a controller F5C is used for controlling the flow rate of waste gas F5, F3\ F4\ F5 to obtain the mixed flow rate FM2 ═ F (F1, F2 and F3) by a heat value algorithm;
in the compression flow control system, a controller F6C controls the flow of compressed air F6 by changing the opening degree of a valve, and provides atomization hybrid power according to the mixed flow FM2 to uniformly mix the three wastes;
the combustion control system is used for controlling the temperature T2 of the combustion furnace, the natural gas flow F7 as an auxiliary object and the mixed flow FM2 as a feed-forward amount, and the natural gas flow F7C is adjusted by the natural gas flow controller F7 according to the mixed flow FM2 and the temperature T2 of the combustion furnace to provide natural gas for combustion in the furnace; the controller F8C adjusts the motor frequency of the combustion fan according to the natural gas flow F7 and the mixed flow FM2 to supplement the air quantity for the vertical combustion furnace;
the environment-friendly index control system is used for controlling the pressure P1 of the cracking converter, the negative pressure P2 of the vertical combustion furnace, the on-line smoke monitoring value TM and the PIC value of the system negative pressure controller and reflecting the load performance state of the combustion system together;
the intelligent control system of the device acquires the information through the command center system, compares and analyzes the selected system environment-friendly operation parameters, the system equipment state parameters, the yield matching parameters, the three-waste physical property parameters and the fault diagnosis parameters, and sends out instruction information.
2. The method for controlling the combined incineration system for three wastes of organic fluorine and waste gas and waste water as claimed in claim 1, wherein the temperature of T1 is controlled to be 600-900 ℃;
the gas production rate is continuously kept constant at a set value of 20-80 kg/h by adjusting F3C1 and F3C 2;
F3C \ F4C \ F5 is adjusted together according to the system instruction to make FM2 be 100-800 kg/h;
t2 is controlled at the temperature of 800-1500 ℃;
the air proportioning range is 1% -20% of the excess coefficient;
the PIC value of the system negative pressure controller is as follows: 30-45 Hz.
3. The method as claimed in claim 1, wherein the command information sent from the command center system includes the time interval operation control range of the feeding speeds M1 and F3 of the cracking control system, the time interval operation control range of the mixing flow FM2 of the three-waste mixing control system, the time interval operation control range of the combustion furnace temperature T2 of the combustion control system, the time interval operation control range of the cracking converter pressure P1 of the environmental protection index control system, and the time interval operation control range, the overall operation state and the vacant load parameter of the vertical negative pressure P2 of the combustion furnace.
4. The method for controlling the combined incineration system for three wastes of organic fluorine and waste gas and waste water as claimed in claim 3, wherein the cracking control system comprises a converter temperature T1 control system and a gas production flow F3 control system; the converter temperature T1 control system comprises a furnace temperature-natural gas flow cascade control system and a natural gas-air flow ratio control system;
the three-waste mixing control system comprises a waste liquid flow control system, a waste gas flow control system and a waste solid plant gas flow control system.
5. An organic fluorine three wastes combined incineration device for implementing the control method of the organic fluorine three wastes combined incineration system according to claim 1, wherein the organic fluorine three wastes combined incineration device comprises:
a waste solid cracking converter, a vertical combustion furnace, a waste heat boiler and a washing and purifying device;
a first burner is fixed at the position of a furnace head of the waste solid cracking converter through a bolt, a waste solid feeder is fixed at the position of a furnace tail of the waste solid cracking converter through a bolt, a waste residue discharge port is formed at the lower end of the waste solid cracking converter, a gas phase closed cover is fixed at the upper end of the waste solid feeder through a bolt, and the gas phase closed cover is communicated with a Venturi mixer through a gas guide pipe;
the Venturi mixer is fixed at the upper end of the vertical combustion furnace through a bolt, the Venturi mixer is also communicated with a waste liquid input pipeline, a waste gas input pipeline and a compressed air input pipeline, and the left end of the vertical combustion furnace is connected with a second combustor through a bolt;
the right end of the vertical combustion furnace is communicated with the waste heat boiler through a pipeline, the waste heat boiler is communicated with the washing and purifying device through a pipeline, the washing and purifying device is communicated with an induced draft fan through a pipeline, and the induced draft fan is communicated with a chimney through a pipeline.
6. The combined incineration facility of three wastes of organic fluorine and waste gas as recited in claim 5, wherein the first combustor is connected to the natural gas input pipeline through a controller T1C and a flow meter F1, and the controller T1C and the flow meter F1 are connected to a thermometer T1 at the upper end of the waste solids cracking converter; the second burner is in communication with the natural gas input line via a controller F7C and a flow meter F7.
7. The combined incineration equipment of three wastes of organic fluorine as recited in claim 5, wherein the waste solid cracking converter is connected with a negative pressure gauge P1, the vertical combustion furnace is connected with a negative pressure gauge P2, both the negative pressure gauge P1 and the negative pressure gauge P2 are connected with a negative pressure controller P1C, and the negative pressure controller P1C is electrically connected with the induced draft fan.
8. The combined incineration equipment of three wastes of organic fluorine and waste gas as recited in claim 5, wherein the waste liquid input pipeline is electrically connected with a flow meter F4 and a controller F4C, the waste gas input pipeline is electrically connected with a flow meter F5 and a controller F5C, and the compressed air input pipeline is electrically connected with a flow meter F6 and a controller F6C.
9. The combined incineration equipment of three wastes of organic fluorine and waste gas as recited in claim 5, wherein the lower end of the waste solid cracking converter is fixed with a rotating motor through a bolt, a feeding screw is fixed inside the waste solid feeder through a rotating shaft, the rotating motor is fixed at the right end of the feeding screw through a bolt, and the right side of the waste solid feeder is connected with a lifter through a bolt;
the rotary motor is electrically connected with a controller F3C1, the rotary motor is electrically connected with a controller F3C2, the controller F3C1 and the controller F3C2 are electrically connected with a flow meter F3 through a controller F3C, and the flow meter F3 is communicated with the air guide pipe;
the bottom of the vertical combustion furnace is communicated with a thermometer T2 and a first pressure gauge through a pipeline;
the first combustor is communicated with a first combustion-supporting fan through an air pipe, a flow meter F2 is communicated between the first combustor and the first combustion-supporting fan, the first combustion-supporting fan is connected with a controller F2C, the middle parts of the furnace head and the furnace of the vertical combustion furnace are both communicated with a second combustion-supporting fan through air pipes, a flow meter F8 is connected between the vertical combustion furnace and the second combustion-supporting fan, and the second combustion-supporting fan is connected with a controller F8C, a second pressure gauge and a flow meter F7.
CN201910387326.7A 2019-05-10 2019-05-10 Organic fluorine three-waste combined incineration system and control method Active CN110307552B (en)

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CN109163330A (en) * 2018-10-10 2019-01-08 永清环保股份有限公司 A kind of domestic garbage pyrolysis gasification process system, processing method and electricity generation system

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CN204006025U (en) * 2013-11-01 2014-12-10 上海灿州环境工程有限公司 A kind of dangerous waste and medical waste incinerator complexes
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Denomination of invention: A Combined Incineration System and Control Method for Organic Fluorine Three Wastes

Effective date of registration: 20230925

Granted publication date: 20211008

Pledgee: Industrial and Commercial Bank of China Limited Sanming Sanyuan Branch

Pledgor: FUJIAN SANNONG NEW MATERIALS CO.,LTD.

Registration number: Y2023980058306