CN109911917A - The dangerous waste of organic matter containing complicated ingredient consolidates the process of salt resource regeneration - Google Patents
The dangerous waste of organic matter containing complicated ingredient consolidates the process of salt resource regeneration Download PDFInfo
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- CN109911917A CN109911917A CN201910038669.2A CN201910038669A CN109911917A CN 109911917 A CN109911917 A CN 109911917A CN 201910038669 A CN201910038669 A CN 201910038669A CN 109911917 A CN109911917 A CN 109911917A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
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Abstract
The present invention provides the processes that the dangerous waste of organic matter containing complicated ingredient consolidates salt resource regeneration, including following process: sorting is broken, pretreatment, cleaning, organic dangerous waste consolidate the separating, dry again of salt particle, organic solvent recycling, calcining, salt refining, preheating and vent gas treatment；Organic matter in abraum salt is decomposed by the process and reaches 99.99%, is burned to generate when exhaust gas reaches industrial discharge requirement by desulphurization and denitration, denitrogenation decoloration and is arranged atmosphere；Purification brine is made through dissolution, filtering, decoloration in inorganic salts, refines brine through being concentrated by evaporation, is suspended, removed according to sodium chloride, sodium sulphate solubility, granularity difference, produces qualified sodium chloride product and qualified sodium sulphate product；Cleaning efficiency of the present invention is high, and equipment is simple, and operating cost is low.
Description
Technical field
The present invention relates to the fields of resource regeneration, more particularly to the dangerous waste of organic matter containing complicated ingredient to consolidate the work of salt resource regeneration
Process.
Background technique
It is the by-product generated in chemical production process admittedly to consolidate salt resource regeneration as the danger of representative containing complicated organic matter dangerous waste
Product, the organic matter dangerous waste containing complexity without sufficiently handling are consolidated salt and are seriously threatened to environment generation, while containing complicated organic matter danger
Useless solid salt is also the resource concentrated, and degree of danger and environmental hazard might not be more than other chemical products, as long as according to
Code requirement rationally designs disposal of resources technique, can generate huge social benefit and significant economic benefit.
Consolidating salt resource regeneration technology containing complicated organic matter dangerous waste at present, there is no mature technology or solutions in the world
Scheme, it is therefore desirable to which designing one kind can reduce to greatest extent to the energy requirement during resource regeneration, fill entire technique
Set the process for accomplishing maximum environmentally friendly behave.
Summary of the invention
It is an object of the present invention to provide the processes that the dangerous waste of organic matter containing complicated ingredient consolidates salt resource regeneration, by that will contain
The opposite direction that complicated organic matter dangerous waste consolidates salt flows the solid phase separated in cleaning and liquid phase is respectively regenerated processing, makes it possible to grow
Phase continuously reduces production cost, improves the process of reclaiming quality, and be suitable for being able to use the life of this technique
Produce device；Solves the above technical problem.
In order to achieve the above technical purposes, reach above-mentioned technical requirements, the technical scheme adopted by the invention is that: containing multiple
Miscellaneous ingredient organic matter dangerous waste consolidates the process of salt resource regeneration, it is characterised in that: including following process；
Process one, sorting are broken: consolidating rapid sorting, mixing and broken, the Duo Zhonghan of salt to complicated source dangerous waste containing organic matter
Complicated ingredient organic matter dangerous waste consolidates salt rapid sorting, is mixed in proportion according to sample moisture percentage difference, and pH value, mixing are adjusted
Block material afterwards is squeezed and is crushed, and is ultimately formed uniformly loose small particle dangerous waste and is consolidated salt particle and is supplied to filling
There is the filter device of slit structure, into intermediate material storage container, broken rear salt will not agglomerate again within 48 hours because gravity is overstock；
Pretreatment: process two consolidates salt particle with a kind of material with hydraulic structure from intermediate material storage container by part small particle dangerous waste
Bucket is transported to pre-processing device, carries out dehumidification processing to part high moisture material by multistage suspension structure；
Process three, cleaning: from intermediate material storage container take part small particle dangerous waste consolidate salt using be selected from water, organic solvent, water with it is organic
At least one of mixed solution of solvent cleaning solution is consolidated salt particle to the dangerous waste that dehumidification is handled and is cleaned；Wherein, it is cleaning
So that the slurries for consolidating salt particle containing dangerous waste is advanced in slot upwards, and while cleaning solution being made to advance downwards with the slurries continuously
Opposite direction flowing contact carries out opposite flowing cleaning, and consolidates salt particle from top discharge dangerous waste, and rear drain is washed in discharge from below；
Process four, organic dangerous waste consolidate separating again for salt particle: being supplied to and be filled with slit the rear drain of washing being discharged from rinse bath
The dangerous waste of gap type filtrator consolidates salt particle separating mechanism again, captures dangerous waste and consolidates salt particle, followed by backwash fluid to capture
The micro slit filter for consolidating salt particle to dangerous waste carries out backwash operation, so that dangerous waste is consolidated salt grain from micro slit filter
Son is separated and is discharged again；And salt particle is consolidated to dangerous waste of the discharge containing slurries and is separated by centrifuge；
Process five, it is dry after cleaning: in the mixed solution containing water, organic solvent, water and organic solvent after cleaning separation
The dangerous waste salt particle of at least one cleaning solution be dried in vacuo and carries out pressurization recycling to dry steam, to improve the boiling of its solvent
Point improves the organic steam rate of recovery, meanwhile, the demand of more refrigerants is reduced, energy consumption is reduced；
Organic solvent recycling: process six contains to what is recycled in the organic solvent of dried recovered, cleaning and separation slurries after cleaning
Mixed organic solvents are recycled, and the classification rectifying column that supply is filled with special construction design tower tray carries out rectifying, also, combines
Heat pump techniques save amount of heat in highly efficient distilling simultaneously, reduce the carbon emission amount of resource regeneration process；
Process seven, calcining: residual use of kettle for consolidating salt ion and distillation system to the dangerous waste after cleaning-drying has Self-rotation structure
At least one of tubular calcining furnace and high temperature smelting furnace or two kinds of equipment carry out the oxidative decomposition of remaining organic matter, by right
Calcining furnace or melting furnace oxygen content and dangerous waste consolidate the control of salt particle temperature oxygen, realize that 99.99% or more not recyclable remnants have
Machine object sufficiently decomposes；The high-temperature flue gas being discharged above to enter the material of tubular calcining furnace or melting furnace by high velocity smoke to
Movement is endangered salt ion downward motion and is moved with the continuous counter current flow of high-temperature flue gas, generates collision in the process, forms of short duration danger
Salt particle suspended state is designed by multistage suspension structure, is increased danger salt particle and is preheated the residence time, makes to eventually enter into tubular and forge
The danger salt particle of burning furnace and melting furnace, which reaches, is fully warmed-up purpose；
Salt refining: process eight dissolves calcined salt, is filtered, being decolourized, in conjunction with the concentration recrystallization of heat pump techniques and spy
The heat of different technique divides salt refining process, is supplied to a kind of spy containing the hot slurry there are many salt crystal by concentration generation crystallization
Different structure divides salt equipment, which divides carnallite by the control to temperature by the difference of the solubility of different salt
From separation process mainly controls concentration carnallite slurry and collides and rub between 65-110 DEG C, by inertia force and gravity generation
Movement is wiped, is moved by both the above, continuous counter current flow movement is formed, all there is cleaning process in counter current flow motion process,
Increase so that other salt crystallites of the smallest salt kind nucleating surface of solubility are constantly cut from the collision with itself nucleus, also,
After multi-stage separation selects, the partial size for finally first separating solubility minimum salt can reach 0.5mm or more, purity reach 99% with
On；The salt kind isolated for after, purity reach as high as 93%, so far, consolidate salt realization containing complicated organic matter dangerous waste and make profits again
With；Salt after crystallization enters a kind of tube bank drying equipment by centrifuge separation, carries out fast dewatering, and isolated mother liquor continue into
Enter crystal system and is evaporated crystallization；
Process nine, preheating and vent gas treatment: consolidating salt after sufficiently recycling available organic solvent containing complicated organic matter dangerous waste, residual
After discharge organic matter carries out secondary high-temperature oxidation processes in remaining system, decomposition product contains sulfur dioxide, nitrogen dioxide, vulcanization
The high-temperature flue gas containing carnallite of a variety of sour gas such as hydrogen, hydrogen chloride, hydrogen fluoride, temperature is between 900-1300 DEG C, high-temperature flue gas
By waste heat boiler recovery section thermal energy, temperature is at 650 DEG C；High-temperature flue gas after recovery waste heat is set by being filled with multilayer water drenching
Standby cylinder, temperature are down to 200 DEG C hereinafter, the flue gas after cooling passes through twin-stage Alkali absorption device, denitrogenation and activated carbon adsorption dress
It sets, final white cigarette of eliminating is discharged into atmosphere.
Preferred: the rinse bath is a kind of tipping tube cylinder device with screw conveying structure, and with floating outstanding cylinder
Shape structure.
It is preferred: described to consolidate the in the mixed solvent of the water of salt particle, organic solvent, water and organic solvent at least containing dangerous waste
The low boiling point organic solvents such as organic solvent nail alcohol, ethyl alcohol, acetone, chloroform, benzene, toluene in a kind of slurries of solvent, also,
Cleaning agent is recycled, and does not generate new pollution.
Preferred: organic solvent recycling refers in Multistage rectifying tower, make mixed multicomponent organic solvent according to
According to the difference of its boiling point, preferential rectifying goes out low boiling point one-component, and so on, different component organic solvent according to boiling point by down to
High sequence is fractionated from Multistage rectifying tower difference column plate, and one-component purity meets industrial under more occasions up to 98% or more
Way uses；And the complicated organic principle kettle in Multistage rectifying tower tower reactor remnants is residual, then supplies as fuel to melting furnace or tubular
Calcining furnace makees the use of heat source fuel.
Preferred: the drying is that dangerous waste after cleaning is consolidated salt ion and supplied to a kind of rake for breaing up structure with charging
Flute profile tubular drier, after breaing up mechanism, so that dangerous waste salt particle size range improves to greatest extent between 0.01-2mm
The cleaning solution rate of recovery, meanwhile, energy consumption is effectively reduced.
Preferred: a kind of special construction divides salt equipment to refer to cyclone in the process eight.
Preferred: carnallite dissolution divides what multi-stage separation in salt process referred to the 3-5 stage to divide salt process, temperature control
65-110 DEG C of section, it includes:
One stage divided salt process: after refining carnallite solution condensing crystallizing, supply to cyclone A, and by shunting, heavy constituent liquid stream
Downward motion continues to be concentrated to moving to crystallizer to sink A on light liquid stream；
Two-stage divides salt process: it is supplied by sink A to cyclone B and is shunted, heavy constituent liquid stream downward motion to sink
B, while light liquid stream carnallite concentration, to highest, light liquid stream, which is supplied to separate heater, to be continued to be concentrated；
Three stages divided salt process: it is supplied by sink B to cyclone C and is shunted, heavy constituent liquid stream downward motion to sink
C, light liquid stream, which is supplied to sink A, continues cleaning and crystal growth；
Four stages divided salt process: it is supplied by sink C to cyclone D and is shunted, heavy constituent liquid stream downward motion to thickening tank
A, also, supply is separated to centrifuge, and purity salt does not include water content up to 99%(after separation) more than, the supply of light liquid stream
Continue cleaning and crystal growth to sink B；
Five stages divided salt process: after carrying out heating concentration by the carnallite that cyclone B is supplied to heating room, supply to cyclone E, and weight
For component liquid stream downward motion to thickening tank B, light liquid stream, which is supplied to crystallizer, continues crystal growth.
Preferred: in the back segment vent gas treatment process, chilling tower is the hollow tubular tower of multilayer water drenching, it is ensured that refrigerant is equal
Even supply, space multiple spot low temperature, meanwhile, tower internal resistance is minimum, and cooled high-temperature flue gas can rise rapidly, and makes high-temperature flue gas in temperature
The residence time was less than 1 second between 250-550 DEG C of section of degree.
Preferred: multistage suspension structural device refers to that one kind carries out suspension preheating in standpipe, also, enters back into cyclone structure
Separator carry out gas solid separation multistage-combination structure.
Beneficial effects of the present invention；The dangerous waste of organic matter containing complicated ingredient consolidates the process of salt resource regeneration, useless to raw material
The cleaning of salt reduces directly to new high-boiling components are generated during raw material salt heating evaporation, it is organic to effectively increase higher boiling
The rate of recovery of solvent improves the quality control of continuity of operation and regenerated solvent that entire process unit handles organic solvent
System, while reducing the load of vent gas treatment process；Using the abraum salt that will crush state and as the organic solvent of cleaning solution
Or water has the advantage that cleaning efficiency height, equipment is simple, and operating cost is low when carrying out the continuous wash of opposite flowing contact.
In particular, making the upper up-flow opposite direction flowing contact of the sinking and cleaning solution of the slurries containing abraum salt particle, giving up after cleaning
The method that salt is discharged from the top of cleaning device, will wash rear drain and be discharged from the lower section of cleaning device, since specific gravity compares cleaning solution
Big abraum salt particle can be fallen naturally in cleaning solution by gravity, and the stirring of helical structure can promote abraum salt particle and transport upwards
It is dynamic, thus the collision and friction constantly generated accelerates the cleaning efficiency of abraum salt particle, equipment is also simpler.In addition, in the party
In method, cleaning speed can be easily controlled by the supply amount and the supply amount of cleaning solution for adjusting cleaning abraum salt particle.
Specific embodiment
In order to be more clear goal of the invention of the invention, technical solution and its advantageous effects, below in conjunction with specific
Embodiment, the present invention will be described in further detail；
A kind of dangerous waste of organic matter containing complicated ingredient consolidates the process of salt resource regeneration, comprising the following steps: process one, sorting are broken
It is broken: to consolidate rapid sorting, mixing and the broken process of salt, a variety of organic matters containing complicated ingredient in complicated source dangerous waste containing organic matter
Dangerous waste consolidates salt rapid sorting, is mixed in proportion according to sample moisture percentage difference, and pH value is adjusted, as moisture percentage is excessively high cannot be into
Row is broken, i.e., is handled into another process；Mixed block material is squeezed and is crushed, and principle is to pass through block
Fricting movement and collision between shape material realize that most of material from internal rupture, forms the material of smaller diameter, passes through
Material realizes impact several times and friction in the machinery of special design structure, which requires to reduce to crushing plant, most end form
Consolidate salt particle at uniformly loose small particle dangerous waste and be supplied to and be filled with the filter device of slit structure, into intermediate storing
Pond, broken rear salt will not agglomerate again within 48 hours because gravity is overstock；Process two, pretreatment: from intermediate material storage container by part
Small particle dangerous waste consolidates salt ion and is transported to pre-processing device with a kind of hopper with hydraulic structure, passes through multistage suspension structure pair
Part high moisture material carries out dehumidification processing；Cleaning: process three takes part small particle dangerous waste to consolidate salt use and is selected from from intermediate material storage container
Water, organic solvent, He Shuiyu organic solvent at least one of mixed solution cleaning solution salt grain is consolidated to the dangerous waste that dehumidification is handled
The process that son is cleaned, wherein make the slurries for consolidating salt particle containing dangerous waste advance in rinse bath upwards, while making to clean
Liquid is advanced downwards and continuously opposite flowing contacts with the slurries, carries out opposite flowing cleaning, and solid from top discharge dangerous waste
Salt particle, rear drain is washed in discharge from below；Process four, organic dangerous waste consolidate separating again for salt particle: washing what is be discharged from rinse bath
Drain, which is supplied to, afterwards is filled with the dangerous waste of micro slit filter and consolidates salt particle separating mechanism again, captures dangerous waste and consolidates salt particle, connects
Get off by backwash fluid to capture dangerous waste consolidate salt particle micro slit filter carry out backwash operation, thus from micro chink
Dangerous waste is consolidated salt particle in formula filter to separate and be discharged again；And to discharge the dangerous waste containing slurries consolidate salt particle by from
Scheming is separated；Process five, it is dry after cleaning: to be mixed to after cleaning separation containing water, organic solvent, He Shuiyu organic solvent
The dangerous waste salt particle for closing at least one of solution cleaning solution be dried in vacuo and carries out pressurization recycling to dry steam, to mention
Its high solvent boiling point improves the organic steam rate of recovery, meanwhile, the demand of more refrigerants is reduced, energy consumption is reduced；Process six, You Jirong
Agent recycling: it is carried out to what is recycled in the organic solvent of dried recovered, cleaning and separation slurries after cleaning containing mixed organic solvents
Recycling is supplied to the classification rectifying column progress rectifying for being filled with special construction design tower tray, also, combines heat pump techniques, in height
Amount of heat is saved in effect rectifying simultaneously, reduces the carbon emission amount of resource regeneration process；Process seven, calcination process: to cleaning-drying
The residual use of kettle that dangerous waste afterwards consolidates salt ion and distillation system has in the tubular calcining furnace and high temperature smelting furnace of Self-rotation structure extremely
Few a kind of or two kinds of equipment carry out the oxidative decomposition of remaining organic matter, by calcining furnace or melting furnace oxygen content and dangerous waste
Gu the control of salt particle temperature oxygen realizes that 99.99% or more not recyclable remaining organic matter sufficiently decomposes；The height being discharged above
Warm flue gas to the material of tubular calcining furnace or melting furnace is entered by Xiang Yundong on high velocity smoke, endanger salt ion downward motion and with
The continuous counter current flow movement of high-temperature flue gas, generates collision in the process, forms of short duration danger salt particle suspended state, outstanding by multistage
Floating structure design increases danger salt particle and preheats the residence time, reaches the danger salt particle for eventually entering into tubular calcining furnace and melting furnace
To being fully warmed-up purpose；Salt refining: process eight dissolves calcined salt, is filtered, being decolourized, in conjunction with the dense of heat pump techniques
Contracting recrystallization and the heat of special process divide salt refining process, by concentration generation crystallization containing there are many hot slurries of salt crystal
Be supplied to a kind of special construction divides salt equipment, and the equipment is by the difference of the solubility of different salt, by the control to temperature,
Carnallite is separated, separation process mainly controls concentration carnallite slurry and produces between 65 ~ 110 DEG C, by inertia force and gravity
Raw collision and fricting movement, are moved by above two kinds, form continuous counter current flow movement, all have in counter current flow motion process
There is cleaning process, so that other salt crystallites of the smallest salt kind nucleating surface of solubility are constantly cut from the collision with itself nucleus
Increase, also, after multi-stage separation selects, the partial size for finally first separating solubility minimum salt can reach 0.5mm or more, purity
Reach 99% or more；The salt kind isolated for after, purity reach as high as 93%, so far, consolidate salt reality containing complicated organic matter dangerous waste
Existing regeneration；Salt after crystallization enters a kind of tube bank drying equipment by being centrifugated, progress fast dewatering, and isolated mother
Liquid goes successively to crystal system and is evaporated crystallization；Process nine, preheating and vent gas treatment: consolidate salt containing complicated organic matter dangerous waste and filling
After dividing the available organic solvent of recycling, after discharge organic matter carries out secondary high-temperature oxidation processes in remaining system, decomposition is produced
Object contains the high-temperature flue gas containing carnallite of a variety of sour gas such as sulfur dioxide, nitrogen dioxide, hydrogen sulfide, hydrogen chloride, hydrogen fluoride, temperature
Degree is between 900 ~ 1300 DEG C, and high-temperature flue gas passes through waste heat boiler recovery section thermal energy, and temperature is at 650 DEG C or so；Recovery waste heat
High-temperature flue gas afterwards is down to 200 DEG C hereinafter, the rapid cooling system is tail by being filled with the cylinder of multilayer water drenching equipment, temperature
Gas disposal process most critical equipment, the temperature of high-temperature flue gas is down to 200 DEG C hereinafter, shortening 250 ~ 550 DEG C by 650 DEG C in 1 second
The section residence time avoids and controls the unconscious synthesis of dioxin, and the flue gas after cooling passes through twin-stage Alkali absorption device, denitrogenation
And activated carbon adsorption device, final white cigarette of eliminating are discharged into atmosphere.Tail gas process is to consolidate salt regenerating unit containing complicated organic matter dangerous waste
Unique gas discharge outlet.
Consolidate the process of salt resource regeneration containing complicated organic matter dangerous waste, comprising multiple opposite flowing cleaning process and
Dangerous waste consolidates the separation process again of salt particle.The rinse bath is a kind of tipping tube cylinder device with screw conveying structure, also,
With flotation tubular structure.
It is described that containing dangerous waste to consolidate at least one of water, organic solvent and the water of salt particle and the mixed solvent of organic solvent molten
The low boiling point organic solvents such as organic solvent nail alcohol, ethyl alcohol, acetone, chloroform, benzene, toluene in the slurries of agent, also, cleaning agent
It is recycled, does not generate new pollution.The organic solvent recovery process is: in Multistage rectifying tower, making mixed multicomponent
Difference of the organic solvent according to its boiling point, preferential rectifying go out low boiling point one-component, and so on, different component organic solvent according to
Sequence is fractionated boiling point from Multistage rectifying tower difference column plate from low to high, and one-component purity meets more up to 98% or more
Lower industrial use is closed to use；And the complicated organic principle kettle in Multistage rectifying tower tower reactor remnants is residual, then supplies as fuel to molten
Melt furnace or tubular calcining furnace makees the use of heat source fuel.The drying process is that dangerous waste after cleaning is consolidated salt ion and supplied to having
A kind of rake teeth shaped cylindrical drier of structure is broken up in charging, after breaing up mechanism so that dangerous waste salt particle size range 0.01 ~
Between 2mm, the cleaning solution rate of recovery is improved to greatest extent, meanwhile, energy consumption is effectively reduced.
A kind of special construction divides salt equipment to refer to the cyclone Jing Guo special designing always.The carnallite dissolution point
What multi-stage separation referred to for 3 ~ 5 stages in salt process divides salt process, and temperature controls 65 ~ 110 DEG C of sections, it includes: a stage divides salt
Process: after refining carnallite solution condensing crystallizing, supply to cyclone A, by shunting, heavy constituent liquid stream downward motion to washing
Slot A continues to be concentrated to moving to crystallizer on light liquid stream；Two-stage divides salt process: being supplied by sink A to cyclone B and is carried out
It shunts, heavy constituent liquid stream downward motion to sink B, while light liquid stream carnallite concentration, to highest, light liquid stream, which is supplied to independent, to be added
Hot device continues to be concentrated；Three stages divided salt process: supplied by sink B to cyclone C and shunted, under heavy constituent liquid stream to
Sink C is moved to, light liquid stream, which is supplied to sink A, continues cleaning and crystal growth；
Four stages divided salt process: it is supplied by sink C to cyclone D and is shunted, heavy constituent liquid stream downward motion to thickening tank
A, also, supply is separated to centrifuge, and purity salt does not include water content up to 99%(after separation) more than, the supply of light liquid stream
Continue cleaning and crystal growth to sink B；Five stages divided salt process: by cyclone B supply to heating room carnallite into
After row heating concentration, supply to cyclone E, heavy constituent liquid stream downward motion to thickening tank B, light liquid stream, which is supplied to crystallizer, to be continued
Carry out crystal growth.
In the back segment vent gas treatment process, chilling tower is the hollow tubular tower of multilayer water drenching, it is ensured that refrigerant uniformly supplies,
Space multiple spot low temperature, meanwhile, tower internal resistance is minimum, and cooled high-temperature flue gas can rise rapidly, and makes high-temperature flue gas in temperature range
The residence time was less than 1 second between 250 ~ 550 DEG C.The process unit for consolidating salt resource regeneration containing complicated organic matter dangerous waste, has multiple
The opposite flowing cleaning device and the separator again for dividing salt.Multistage suspension structural device refers to 3 ~ 7 grades of suspension structure,
One kind carrying out suspension preheating in standpipe, also, the separator for entering back into cyclone structure carries out the multistage-combination knot of gas solid separation
Structure, principle are the high-temperature flue gas wind speed of control preheating standpipe, and for wind speed between 15 ~ 25m/s, increase is preheated material danger salt again
Vertical intraductal retention time, by being collided between suspended particulate, make to enter the danger salt particle more concentrated in standpipe again in standpipe uniformly
Cold and hot medium counter flow heat exchange is carried out to movement on distribution, the downward motion of salt particle of endangering and high-temperature flue gas, also, makes to enter
The speed of separator reduces by 3 ~ 5m/s, also, enters 3 ~ 15 ° of incline structures that separator air-flow nozzle is polygon.
Specific implementation of the invention:
Cleaning method has batch cleaning and continuous wash, because consolidating salt source complexity containing complicated organic matter dangerous waste, according to its component
Difference is reasonably selected；Batch cleaning is that the raw material salt for obtaining periphery factory disposably or is in batches used clearly in rinse bath
The method of washing lotion stirring and washing stipulated time, usually by the method for its repeated multiple times progress；But it needs to be one due to rinse bath
It is a or multiple, thus the device is complicated, expenditure of construction is big, and the consumption that will lead to cleaning solution increases, the treating capacity of drain increases
Add, stirring power increase, is not avoided that operating cost rises.It proposes as continuous wash by the raw material salt and work of the state that crushes
The method for carrying out opposite flowing contact for the organic solvent or water of cleaning solution.Make the first liquid phase and water of consolidating salt containing organic liquid waste
Equal second liquid phases contact while abraum salt particle settles under the effect of gravity with its opposite flows, and solid abraum salt is made to be transferred to the
The method of two liquid phases.
It is above-mentioned to consolidate the regenerated process of salt containing complicated organic matter dangerous waste, to the clean and reuse rate of organic solvent, can reach
The 97% of sample organic solvent content, the different product organic solvent purity after fractionation can reach 98% or more, meets industrial application
It is required that.Described point of salt technique and device, after mixed salt carries out point salt, the purity of different cultivars salt is up to 99% or more, such as sodium chloride
Up to 99% or more, sodium sulphate purity is not washed again up to 93% or more in mixed salt, do not wash again magnesium sulfate purity up to 95% with
On, if sodium sulphate, magnesium sulfate are washed again, product purity is all up to 99% or more, product can be used for chlor-alkali, akali sulphide,
The application of the fields such as inorganic fertilizer.The chilling cooling system containing high-temperature flue gas effectively reduces 250 ~ 550 DEG C of residence times, stagnant
Stay the time less than 1 second, it can be by the unconscious synthesis control of dioxin in annual 0.6 micro- g ton of abraum salt.The calcination process is:
Under oxygen-enriched environment, temperature is carried out fully oxidized and is decomposed under the conditions of 750 ~ 1100 DEG C, and remaining organic matter decomposition rate is up to 99.99%
More than.The vent gas treatment process, emission reach newest environmental requirement.
And then the present invention provides one kind organic matter dangerous wastes containing complexity to consolidate the regenerated process unit of salt, has the broken dress of sorting
It sets: accurate, quick using the reclaimer device with hydraulic system for making the abraum salt selected from raw material storage be sorted and be crushed
Dangerous waste raw material is sorted, high degree of automation, prevents people and directly contact consolidate salt containing complicated organic matter dangerous waste, bulk materials lead to
A kind of tube structure with rotation vibration quartering hammer is crossed, reliable and stable, caking ability meets pre- place between abraum salt granularity, abraum salt particle
Science and engineering sequence and cleaning process demand；Pretreatment unit: for carrying out dehumidification processing from the abraum salt containing organic matter, keep water content small
In 2%, to meet the use demand of subsequent handling；Opposite direction flowing cleaning device: is had using selected from water, organic solvent, He Shuiyu
The device that at least one of mixed solution of solvent cleaning solution cleans broken abraum salt particle, it is closed to tilt
Cylinder in, have and be able to carry out floating washing and with spiral, porose stirring structure, effect be make in rinse bath containing
The slurries that dangerous waste consolidates salt particle are advanced upwards, and while make cleaning solution advance downwards and the slurries continuously opposite flowing connects
Touching, the opposite flowing cleaning of progress, and consolidate salt particle from top discharge dangerous waste, and it is discharged washes rear drain from below, it is solid in cleaning process
Body it is intergranular collision and friction accelerate surface organic matter cut from, also, accelerate fall off organic matter to second liquid phase point
It dissipates and shifts.
Above-described embodiment is only intended to clearly illustrate description made by the present invention, and does not limit the embodiments,
To those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
Dynamic, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (9)
1. the process that the dangerous waste of organic matter containing complicated ingredient consolidates salt resource regeneration, it is characterised in that: including following process；
Process one, sorting are broken: consolidating rapid sorting, mixing and broken, the Duo Zhonghan of salt to complicated source dangerous waste containing organic matter
Complicated ingredient organic matter dangerous waste consolidates salt rapid sorting, is mixed in proportion according to sample moisture percentage difference, and pH value, mixing are adjusted
Block material afterwards is squeezed and is crushed, and is ultimately formed uniformly loose small particle dangerous waste and is consolidated salt particle and is supplied to filling
There is the filter device of slit structure, into intermediate material storage container, broken rear salt will not agglomerate again within 48 hours because gravity is overstock；
Pretreatment: process two consolidates salt particle with a kind of material with hydraulic structure from intermediate material storage container by part small particle dangerous waste
Bucket is transported to pre-processing device, carries out dehumidification processing to part high moisture material by multistage suspension structure；
Process three, cleaning: from intermediate material storage container take part small particle dangerous waste consolidate salt using be selected from water, organic solvent, water with it is organic
At least one of mixed solution of solvent cleaning solution is consolidated salt particle to the dangerous waste that dehumidification is handled and is cleaned；Wherein, it is cleaning
So that the slurries for consolidating salt particle containing dangerous waste is advanced in slot upwards, and while cleaning solution being made to advance downwards with the slurries continuously
Opposite direction flowing contact carries out opposite flowing cleaning, and consolidates salt particle from top discharge dangerous waste, and rear drain is washed in discharge from below；
Process four, organic dangerous waste consolidate separating again for salt particle: being supplied to and be filled with slit the rear drain of washing being discharged from rinse bath
The dangerous waste of gap type filtrator consolidates salt particle separating mechanism again, captures dangerous waste and consolidates salt particle, followed by backwash fluid to capture
The micro slit filter for consolidating salt particle to dangerous waste carries out backwash operation, so that dangerous waste is consolidated salt grain from micro slit filter
Son is separated and is discharged again；And salt particle is consolidated to dangerous waste of the discharge containing slurries and is separated by centrifuge；
Process five, it is dry after cleaning: in the mixed solution containing water, organic solvent, water and organic solvent after cleaning separation
The dangerous waste salt particle of at least one cleaning solution be dried in vacuo and carries out pressurization recycling to dry steam, to improve the boiling of its solvent
Point improves the organic steam rate of recovery, meanwhile, the demand of more refrigerants is reduced, energy consumption is reduced；
Organic solvent recycling: process six contains to what is recycled in the organic solvent of dried recovered, cleaning and separation slurries after cleaning
Mixed organic solvents are recycled, and the classification rectifying column that supply is filled with special construction design tower tray carries out rectifying, also, combines
Heat pump techniques save amount of heat in highly efficient distilling simultaneously, reduce the carbon emission amount of resource regeneration process；
Process seven, calcining: residual use of kettle for consolidating salt ion and distillation system to the dangerous waste after cleaning-drying has Self-rotation structure
At least one of tubular calcining furnace and high temperature smelting furnace or two kinds of equipment carry out the oxidative decomposition of remaining organic matter, by right
Calcining furnace or melting furnace oxygen content and dangerous waste consolidate the control of salt particle temperature oxygen, realize that 99.99% or more not recyclable remnants have
Machine object sufficiently decomposes；The high-temperature flue gas being discharged above to enter the material of tubular calcining furnace or melting furnace by high velocity smoke to
Movement is endangered salt ion downward motion and is moved with the continuous counter current flow of high-temperature flue gas, generates collision in the process, forms of short duration danger
Salt particle suspended state is designed by multistage suspension structure, is increased danger salt particle and is preheated the residence time, makes to eventually enter into tubular and forge
The danger salt particle of burning furnace and melting furnace, which reaches, is fully warmed-up purpose；
Salt refining: process eight dissolves calcined salt, is filtered, being decolourized, in conjunction with the concentration recrystallization of heat pump techniques and spy
The heat of different technique divides salt refining process, is supplied to a kind of spy containing the hot slurry there are many salt crystal by concentration generation crystallization
Different structure divides salt equipment, which divides carnallite by the control to temperature by the difference of the solubility of different salt
From separation process mainly controls concentration carnallite slurry and collides and rub between 65-110 DEG C, by inertia force and gravity generation
Movement is wiped, is moved by both the above, continuous counter current flow movement is formed, all there is cleaning process in counter current flow motion process,
Increase so that other salt crystallites of the smallest salt kind nucleating surface of solubility are constantly cut from the collision with itself nucleus, also,
After multi-stage separation selects, the partial size for finally first separating solubility minimum salt can reach 0.5mm or more, purity reach 99% with
On；The salt kind isolated for after, purity reach as high as 93%, so far, consolidate salt realization containing complicated organic matter dangerous waste and make profits again
With；Salt after crystallization enters a kind of tube bank drying equipment by centrifuge separation, carries out fast dewatering, and isolated mother liquor continue into
Enter crystal system and is evaporated crystallization；
Process nine, preheating and vent gas treatment: consolidating salt after sufficiently recycling available organic solvent containing complicated organic matter dangerous waste, residual
After discharge organic matter carries out secondary high-temperature oxidation processes in remaining system, decomposition product contains sulfur dioxide, nitrogen dioxide, vulcanization
The high-temperature flue gas containing carnallite of a variety of sour gas such as hydrogen, hydrogen chloride, hydrogen fluoride, temperature is between 900-1300 DEG C, high-temperature flue gas
By waste heat boiler recovery section thermal energy, temperature is at 650 DEG C；High-temperature flue gas after recovery waste heat is set by being filled with multilayer water drenching
Standby cylinder, temperature are down to 200 DEG C hereinafter, the flue gas after cooling passes through twin-stage Alkali absorption device, denitrogenation and activated carbon adsorption dress
It sets, final white cigarette of eliminating is discharged into atmosphere.
2. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Rinse bath is a kind of tipping tube cylinder device with screw conveying structure, and with floating outstanding tubular structure.
3. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Consolidate in the slurries of at least one of the mixed solvent of the water of salt particle, organic solvent, water and organic solvent solvent containing dangerous waste
The low boiling point organic solvents such as organic solvent nail alcohol, ethyl alcohol, acetone, chloroform, benzene, toluene, also, cleaning agent is recycled, no
Generate new pollution.
4. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Organic solvent recycling refers in Multistage rectifying tower, makes difference of the mixed multicomponent organic solvent according to its boiling point, preferentially
Rectifying goes out low boiling point one-component, and so on, different component organic solvent is according to boiling point from low to high sequentially from Multistage rectifying tower
Different column plates are fractionated, and one-component purity meets industrial use under more occasions and use up to 98% or more；And in multi-level oil
The complicated organic principle kettle for evaporating tower tower reactor remnants is residual, then supplies as fuel and make heat source fuel to melting furnace or tubular calcining furnace and make
With.
5. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Drying is that dangerous waste after cleaning is consolidated salt ion and supplied to a kind of rake teeth shaped cylindrical drier for breaing up structure with charging, is passed through
After breaing up mechanism, so that dangerous waste salt particle size range between 0.01-2mm, improves the cleaning solution rate of recovery to greatest extent, meanwhile,
Energy consumption is effectively reduced.
6. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Process eight in a kind of special construction divide salt equipment to refer to cyclone.
7. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: described
Carnallite dissolution divides what multi-stage separation in salt process referred to the 3-5 stage to divide salt process, and temperature controls 65-110 DEG C of section, it includes:
One stage divided salt process: after refining carnallite solution condensing crystallizing, supply to cyclone A, and by shunting, heavy constituent liquid stream
Downward motion continues to be concentrated to moving to crystallizer to sink A on light liquid stream；
Two-stage divides salt process: it is supplied by sink A to cyclone B and is shunted, heavy constituent liquid stream downward motion to sink
B, while light liquid stream carnallite concentration, to highest, light liquid stream, which is supplied to separate heater, to be continued to be concentrated；
Three stages divided salt process: it is supplied by sink B to cyclone C and is shunted, heavy constituent liquid stream downward motion to sink
C, light liquid stream, which is supplied to sink A, continues cleaning and crystal growth；
Four stages divided salt process: it is supplied by sink C to cyclone D and is shunted, heavy constituent liquid stream downward motion to thickening tank
A, also, supply is separated to centrifuge, and purity salt does not include water content up to 99%(after separation) more than, the supply of light liquid stream
Continue cleaning and crystal growth to sink B；
Five stages divided salt process: after carrying out heating concentration by the carnallite that cyclone B is supplied to heating room, supply to cyclone E, and weight
For component liquid stream downward motion to thickening tank B, light liquid stream, which is supplied to crystallizer, continues crystal growth.
8. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: in institute
It states in back segment vent gas treatment process, chilling tower is the hollow tubular tower of multilayer water drenching, it is ensured that refrigerant is uniformly supplied, space multiple spot is low
Temperature, meanwhile, tower internal resistance is minimum, and cooled high-temperature flue gas can rise rapidly, make high-temperature flue gas 250-550 DEG C of temperature range it
Between the residence time less than 1 second.
9. consolidating the process of salt resource regeneration containing complicated organic matter dangerous waste as described in claim 1, it is characterised in that: multistage
Suspension structure equipment refers to that a kind of separator for carrying out suspension preheating in standpipe, also, entering back into cyclone structure carries out gas-solid and divides
From multistage-combination structure.
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| CN114314615A (en) * | 2021-12-31 | 2022-04-12 | 浙江工业大学 | Resource treatment method of industrial waste salt containing organic matters |
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