A kind of brine waste burning processing system and processing method thereof
Technical field
The present invention relates to brine waste burning disposal field, particularly relate to a kind of can the brine waste burning processing system of high efficiente callback organic salt and processing method thereof.
Background technology
A large amount of high slat-containing wastewaters can be produced unavoidably in the industrial production at present, traditional technique generally adopts burning high slat-containing wastewater method to process, its Problems existing is: 1. brine waste must adopt quick cooling method to cool after burning, traditional method is all adopt a large amount of water to carry out combination cooling, water after chilling also needs to drain into sewage treatment plant and carries out subsequent treatment, waste water resource and subsequent treatment process is complicated greatly, cost of investment is higher; 2. in burning process, the too high meeting of incineration temperature causes salt to melt, and the salt of molten can penetrate in the refractory material of incinerator, causes refractory material in layer delamination damage, and the life-span of refractory material is shortened greatly; 3. the heat energy after burning can not reclaim, and energy consumption is high; 4. fuse salt and other materials can produce insoluble matter at high temperature incineration, meeting occluding device and system; 5. the salt after chilling can become floating dust and bring severe contamination to surrounding enviroment.Have much room for improvement.
Chinese Patent Application No. is 201210362762.7, disclose a kind of salt-containing organic wastewater immersion and burn quenching device and method, it comprises incinerator, the waste water supply system of salt-containing organic wastewater is supplied in the combustion chamber of incinerator, the fuel gas supply system of fuel gas is supplied in the combustion chamber of incinerator, the combustion air supply system of combustion air is inputted in the combustion chamber of incinerator, by burning the flue gas chilling system of reaction in furnace products therefrom chilling reduction temperature, by the flue gas dust collecting system that salt contained in the flue gas after chilling cleans up.Salt-containing organic wastewater is after incinerator internal oxidition, and its saliferous flue gas reaches gas-liquid two-phase balance by chilling, realizes separation and recovery saliferous material.Flue gas after chilling, by after venturi scrubber dedusting, reaches fume environment protection discharge standard and passes through smoke stack emission.This technical scheme is also adopt burning method to process the saline solution of high-load, but its incineration temperature controls at 1050 ~ 1150 DEG C, exceed the fusing point of salt, the salt of molten can be formed in burning process, the salt penetration of molten cannot be overcome in the refractory material of incinerator, cause refractory material in layer delamination damage, make the problem that the life-span of refractory material shortens greatly, and can salting liquid be produced in quenching process, effectively cannot be separated and obtain solid salt, realize gas-liquid separation, its dedusting is also produced with wet dedusting, still do not overcome in prior art the shortcoming of wasting large water gaging, and the heat energy that high-temperature flue gas produces does not recycle, energy consumption is larger.Have much room for improvement.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides a kind of energy-conserving and environment-protective, can effectively process and reclaim the solid salt in brine waste, greatly improves brine waste burning processing system and the processing method thereof for the treatment of effeciency.
Key problem in technology of the present invention is to change the method in the past using a large amount of water quick cooling, radiator is adopted to carry out heat exchange, effective reduction flue-gas temperature, and provide high-temperature flue gas by coal burning machine, overcome by the high problem of combustion of natural gas cost, moreover many places arrange circulating flue gas pipeline in the entire system, effectively flue gas is controlled while reclaiming heat energy in suitable temperature, such as: prevent the salt in brine waste from becoming molten; The temperature entering multi-tube dust cleaner and too cotton hot precipitator controls at 600 DEG C ~ 650 DEG C etc.The efficiency of effective raising dedusting.Its concrete technical scheme is: a kind of brine waste burning processing system, comprise incinerator, the waste water supercharging equipment of high-pressure atomization waste water is pumped into incinerator, the gas supply equipment of high-temperature flue gas is passed into incinerator, the auxiliary combustion equipment of combustion-supporting gas is passed in incinerator, to the cooling device of the product quenching process of reaction in furnace gained be burned and chilling flue gas be carried out the cleaner of purified treatment, it is characterized in that described gas supply equipment is coal burning machine, the high-temperature flue gas that coal burning machine produces connects incinerator by pipeline; Described cooling device is radiator, and radiator import is connected with incinerator bottom smoke discharging pipe, and outlet conduit connects cleaner; Described cleaner comprises at least one multi-tube dust cleaner, at least one too cotton hot precipitator, described multi-tube dust cleaner exhanst gas outlet is connected by pipeline in turn with too cotton hot precipitator gas approach, the dust outlet of described multi-tube dust cleaner bottom and the dust outlet pipeline communication of too cotton hot precipitator bottom, the dust outlet of described too cotton hot precipitator bottom is separately set up a pipeline and is connected flow delivery systems; Described too cotton hot precipitator exhanst gas outlet pipeline is communicated with preboiler, and preboiler connects air preheat machine, soft water heater and smoke exhaust fan successively by pipeline.
As a further improvement on the present invention, described radiator is separately established a circulating flue gas pipeline communication coal burning machine.The temperature of flue gas will can be effectively reduced while part of smoke heat energy recycling by this kind of setting.
As a further improvement on the present invention, the pipeline between described multi-tube dust cleaner exhanst gas outlet and too cotton hot precipitator gas approach is separately established a circulating flue gas pipeline communication coal burning machine.The temperature of flue gas will can be effectively reduced while part of smoke heat energy recycling by this kind of setting.
As a further improvement on the present invention, secondary multi-tube dust cleaner set up by described circulating flue gas pipeline, the dust outlet of the too cotton hot precipitator bottom of dust outlet pipeline communication of described secondary multi-tube dust cleaner bottom.Dedusting can be carried out to flue gas further, the organic salt in effective separating flue by this kind of setting.
As a further improvement on the present invention, the circulating flue gas pipeline that the pipeline between described multi-tube dust cleaner exhanst gas outlet and too cotton hot precipitator gas approach is separately established has additional flue gas recirculation blower fan.Arranged by this kind and improve flue gas transfer efficiency.
As a further improvement on the present invention, pipeline between the dust outlet of described secondary multi-tube dust cleaner bottom with the dust outlet of too cotton hot precipitator bottom communicates with the pipeline between the dust outlet of described multi-tube dust cleaner bottom and the dust outlet of too cotton hot precipitator bottom, and has additional pneumatic convey blower fan.Effectively can save duct length by this kind of setting, and improve organic salt dust transfer efficiency.
As preferably, the pipeline between described coal burning machine and incinerator has additional clean room.Reduce the undesired impurities in high-temperature flue gas.
As a further improvement on the present invention, described auxiliary combustion equipment is neat gas burner, is arranged at the pipeline be connected with incinerator for coal burning machine tangentially arranged with incinerator body.Arranged by this kind, in right amount by natural gas, effectively control flue-gas temperature in incinerator.
The present invention is for solving the problems of the technologies described above, and additionally provide and utilize said system to carry out the method processed, its concrete technical scheme is: a kind of brine waste incineration treatment method, is characterized in that comprising the following steps:
A. the atomization brine waste that the high-temperature flue gas first produced by coal burning machine, waste water supercharging equipment produce pumps into incinerator chamber, both haptoreactions, brine waste gasification also mixes with high-temperature flue gas, it is 900 DEG C ~ 950 DEG C that described high-temperature flue gas enters temperature, makes mixed flue-gas temperature control at 700 DEG C ~ 780 DEG C; Effectively prevent from becoming molten salt.
B. then inject natural gas by the neat gas burner of auxiliary combustion equipment and carry out drying and incinerating, make temperature control below 1000 DEG C, the dry flue gas produced containing dust salt;
C. the flue gas containing dust salt is discharged from incinerator bottom smoke discharging pipe, enters radiation recuperator and carries out heat exchange, part of smoke is entered coal burning machine by circulating flue gas tube pump simultaneously and recycles, make the flue gas containing dust salt be cooled to 600 DEG C ~ 650 DEG C further;
D. the flue gas containing dust salt of cooling is entered multi-tube dust cleaner and carry out flue gas ash removal, by flue gas and saliferous dust separation, flue gas after dedusting enters too cotton hot precipitator again and carries out final dusting, flue gas after final dusting enters preboiler and cools to 600 DEG C, circulating flue gas pipe part of smoke is utilized to be circulated back in coal burning machine, after flue gas cool-down to 425 DEG C, remaining flue gas is entered air preheater, by the air heat in air preheater to 300 DEG C, then continue flue gas cool-down to enter air by smoke exhaust fan after 180 DEG C;
Utilize pneumatic convey blower fan to pump into flow delivery systems after the saliferous dust collection of e. multi-tube dust cleaner and too cotton hot precipitator bottom dust outlet being discharged, be cooled to about 70 DEG C pack outward transports through pneumatic convey.
As a further improvement on the present invention, a described flue gas part after multi-tube dust cleaner dedusting enters secondary multi-tube dust cleaner dedusting Posterior circle by circulating flue gas pipeline and enters coal burning machine, and the saliferous dust that secondary multi-tube dust cleaner bottom dust outlet is discharged enters flow delivery systems.
Beneficial effect of the present invention: enormously simplify technological process, simple operation is reliable, and the continuity of production improves greatly; Reduce equipment investment, shorten the completion time of project; Salt, in burning process, can not become fuse salt, and solve the etch of fuse salt to refractory material, the service life of refractory material improves greatly; Heat energy (middle pressure steam) can be reclaimed; Do not consume water, also there is no the generation of waste water simultaneously; Waste residue can carry out fully utilizing or as common offal treatment; Flue gas, completely can qualified discharge not containing dust; A large amount of recovery solid salt.
Accompanying drawing explanation
Fig. 1 is the structural representation of present system.
Fig. 2 is process structure schematic diagram of the present invention.
Detailed description of the invention
Embodiment 1: a kind of brine waste burning processing system, comprise incinerator 003, the waste water supercharging equipment 017 of high-pressure atomization waste water is pumped into incinerator, the gas supply equipment of high-temperature flue gas is passed into incinerator, the auxiliary combustion equipment of combustion-supporting gas is passed in incinerator, to the cooling device of the product quenching process of reaction in furnace gained be burned and chilling flue gas be carried out the cleaner of purified treatment, described gas supply equipment is coal burning machine 001, and the high-temperature flue gas that coal burning machine 001 produces connects incinerator 003 by pipeline 002; Described cooling device is radiator 004, and radiator 004 import is connected with incinerator 003 bottom smoke discharging pipe 002, and outlet conduit 002 connects cleaner; Described cleaner comprises at least one multi-tube dust cleaner 005, at least one too cotton hot precipitator 006, described multi-tube dust cleaner 005 exhanst gas outlet is connected by pipeline 002 in turn with too cotton hot precipitator 006 gas approach, the dust outlet of described multi-tube dust cleaner 005 bottom is communicated with the dust outlet pipeline 021 of too cotton hot precipitator 006 bottom, and the dust outlet of described too cotton hot precipitator 006 bottom is separately set up a pipeline 021 and connected flow delivery systems 007; Described too cotton hot precipitator 006 exhanst gas outlet pipeline 002 is communicated with preboiler 008, and preboiler 008 connects air preheat machine 009 and smoke exhaust fan 010 successively by pipeline 002.
Embodiment 2: with reference to embodiment 1, described radiator 004 is separately established a circulating flue gas pipeline 012 be communicated with coal burning machine 001.
Embodiment 3: with reference to implementing 1 or 2, the pipeline between described multi-tube dust cleaner 005 exhanst gas outlet with too cotton hot precipitator 006 gas approach separately establishes a circulating flue gas pipeline 012 to be communicated with coal burning machine 001.
Embodiment 4: with reference to embodiment 1 or 2 or 3, secondary multi-tube dust cleaner 051 set up by described circulating flue gas pipeline 012, the dust outlet of dust outlet pipeline communication too cotton hot precipitator 006 bottom of described secondary multi-tube dust cleaner 051 bottom.
Embodiment 5: with reference to embodiment 4, the circulating flue gas pipeline 012 that the pipeline between described multi-tube dust cleaner 005 exhanst gas outlet and too cotton hot precipitator 006 gas approach is separately established has additional flue gas recirculation blower fan 013.
Embodiment 6: with reference to embodiment 1, pipeline 021 between the dust outlet of described secondary multi-tube dust cleaner 051 bottom with the dust outlet of too cotton hot precipitator 006 bottom communicates with the pipeline 021 between the dust outlet of described multi-tube dust cleaner 005 bottom and the dust outlet of too cotton hot precipitator 006 bottom, and has additional pneumatic convey blower fan 014.
Embodiment 7: with reference to embodiment 1, the pipeline 002 between described coal burning machine 001 and incinerator 003 has additional clean room 015.
Embodiment 8: with reference to embodiment 1, described auxiliary combustion equipment is neat gas burner 016, is arranged at the pipeline 002 be connected with incinerator 003 for coal burning machine 001 tangentially arranged with incinerator 003 body of heater.
A kind of brine waste incineration treatment method, comprises the following steps:
A. the atomization brine waste that the high-temperature flue gas first produced by coal burning machine 001, waste water supercharging equipment 017 produce pumps into incinerator 003 chamber, both haptoreactions, brine waste gasification also mixes with high-temperature flue gas, it is 900 DEG C ~ 950 DEG C that described high-temperature flue gas enters temperature, makes mixed flue-gas temperature control at 700 DEG C ~ 780 DEG C;
B. then inject natural gas by the neat gas burner 016 of auxiliary combustion equipment and carry out drying and incinerating, make temperature control below 1000 DEG C, the dry flue gas produced containing dust salt;
C. the flue gas containing dust salt is discharged from incinerator 003 bottom smoke discharging pipe, enter radiation recuperator 004 and carry out heat exchange, part of smoke is pumped into coal burning machine 001 by circulating flue gas pipe 012 to recycle simultaneously, make the flue gas containing dust salt be cooled to 600 DEG C ~ 650 DEG C further;
D. the flue gas containing dust salt of cooling is entered multi-tube dust cleaner 005 and carry out flue gas ash removal, by flue gas and saliferous dust separation, flue gas after dedusting enters too cotton hot precipitator 006 again and carries out final dusting, flue gas after final dusting enters preboiler 008 and cools to 600 DEG C, circulating flue gas pipe 012 part of smoke is utilized to be circulated back in coal burning machine 001, after flue gas cool-down to 425 DEG C, remaining flue gas is entered air preheater 009, by the air heat in air preheater 009 to 300 DEG C, flue gas cool-down is continued to enter air by smoke exhaust fan 010 again after 180 DEG C,
Utilize pneumatic convey blower fan 014 to pump into flow delivery systems 007 after the saliferous dust collection of e. multi-tube dust cleaner 005 and too cotton hot precipitator 006 bottom dust outlet being discharged, be cooled to about 70 DEG C pack outward transports through pneumatic convey.
A described flue gas part after multi-tube dust cleaner 005 dedusting enters secondary multi-tube dust cleaner 051 dedusting Posterior circle by circulating flue gas pipeline 012 and enters coal burning machine 001, and the saliferous dust that secondary multi-tube dust cleaner 051 bottom dust outlet is discharged enters flow delivery systems 007.