CN107321755A - A kind of abraum salt process for reclaiming and its special purpose device - Google Patents
A kind of abraum salt process for reclaiming and its special purpose device Download PDFInfo
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- CN107321755A CN107321755A CN201710523345.9A CN201710523345A CN107321755A CN 107321755 A CN107321755 A CN 107321755A CN 201710523345 A CN201710523345 A CN 201710523345A CN 107321755 A CN107321755 A CN 107321755A
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- abraum salt
- gas
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- 150000003839 salts Chemical class 0.000 title claims abstract description 289
- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000008569 process Effects 0.000 title claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000005469 granulation Methods 0.000 claims abstract description 22
- 230000003179 granulation Effects 0.000 claims abstract description 22
- 239000003518 caustics Substances 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 13
- 238000000746 purification Methods 0.000 claims abstract description 11
- 239000002912 waste gas Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 51
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000003345 natural gas Substances 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 11
- 239000003513 alkali Substances 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 150000002894 organic compounds Chemical class 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 239000006227 byproduct Substances 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 239000003546 flue gas Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 abstract description 13
- 238000004064 recycling Methods 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 abstract description 5
- 238000010309 melting process Methods 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 2
- 231100001243 air pollutant Toxicity 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- FBMQNRKSAWNXBT-UHFFFAOYSA-N 1,4-diaminoanthracene-9,10-dione Chemical class O=C1C2=CC=CC=C2C(=O)C2=C1C(N)=CC=C2N FBMQNRKSAWNXBT-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- JJEJDZONIFQNHG-UHFFFAOYSA-N [C+4].N Chemical compound [C+4].N JJEJDZONIFQNHG-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005915 ammonolysis reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- ZLTPDFXIESTBQG-UHFFFAOYSA-N isothiazole Chemical compound C=1C=NSC=1 ZLTPDFXIESTBQG-UHFFFAOYSA-N 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- GUEIZVNYDFNHJU-UHFFFAOYSA-N quinizarin Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C(O)=CC=C2O GUEIZVNYDFNHJU-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- -1 salt sodium sulphate Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of abraum salt process for reclaiming and its special purpose device, the technique includes abraum salt feeding system, abraum salt fusing system, exhaust treatment system, fused salt cooling granulation system；Described device includes abraum salt feeder, abraum salt distributing device, drying and preheating and the integrated molten salt furnace of fusing, belt cooling granulation machine, RTO stoves, filter, spark arrester, caustic wash tower etc..While the present invention realizes in abraum salt that organic matter thoroughly destroys processing by fire and reaches recycling standard, the organic matter produced in abraum salt purification process is further handled using heat damage, it is to avoid the secondary pollution discharge such as waste water, waste gas during abraum salt is utilized.The present invention uses vertical molten salt furnace simultaneously, realized in stove abraum salt dry, preheating, melting process, reduce investment and the exhaust pollution problems of drying, mill etc. that unit is brought, overcome equipment because salt bonding is difficult to continuous and steady operation problem.
Description
Technical field
The invention belongs to solidification disposal of waste technical field in green technology, it is related to a kind of abraum salt process for reclaiming and its special dress
Put, and in particular to a kind of organic matter for taking high-temperature melting method to remove in abraum salt reaches the method and device of abraum salt purification, application
The recycling of the abraum salt produced in fine chemistry industry production process.
Background technology
Abraum salt is mainly derived from the field of fine chemical such as agricultural chemicals, pharmacy, printing and dyeing, the production of national chemical industry abraum salt in 2015
Raw about 3,000,000 tons of amount.Fine chemistry industry acid-base neutralization, saltout and the high slat-containing wastewater concentration produced in the production technology such as fixation, meeting
Produce one or more salt such as sodium chloride-containing, sodium sulphate, sodium sulfite, sodium nitrate, potassium chloride, potassium sulfate, calcium chloride, magnesium chloride
And the mixture of organic matter, with species is various, complicated component, poisonous and harmful substance content are high.It is this to have containing largely poisonous
The abraum salt of evil organic matter is general qualitative for dangerous solid waste.
Abraum salt mainly handles method of disposal for security landfill, innoxious and recycling.Security landfill is due to taking a large amount of soil
Ground resource, on stabilizing and impervious barrier causes the influence such as corrosion, most of dangerous waste landfill yards refusal commission at present.Innoxious and money
Sourceization mainly has desalinization of soil by flooding or leaching method, advanced oxidation processes, Method of Soda processed and pyrolysismethod.Desalinization of soil by flooding or leaching method：Abraum salt is washed using saturated brine, will be useless
Organic material in salt is dissolved in cleaning solution, it is adaptable to which organic components are single and soluble in water in abraum salt, but produce
High-salt wastewater is difficult to handle, and obtained net salt is difficult to meet recycling requirement.Advanced oxidation processes：The basis washed in saturated brine
On, such as sodium hypochlorite, hydrogen peroxide, ozone strong oxidizer are added, organic pollution is aoxidized and the net salt of byproduct is obtained,
But because the different oxidation effectiveness difference of the property of organic pollution is than larger, the method scope of application is small, and the oxidant content of consumption
Greatly.Extraction：To there is engine dyeing thing to be extracted into extractant in abraum salt by extractant, reduction abraum salt in content of organics so as to
Obtaining organic matter in net salt, extractant can be by being stripped or steaming（Essence）Recycling is evaporated, but obtained net salt also contains one
Determine the organic matter of content, organic matter of the method suitable for reclaiming high added value abraum salt.Method of Soda processed：Saturated salt is made in abraum salt
The aqueous solution, is passed through ammonia, carbon dioxide gas or is directly added into solid carbon ammonium, and crystallization separates out solid sodium bicarbonate, pyrolytic system
Obtain soda ash.Containing ammonium chloride mother liquor freezing and crystallizing separates out ammonium chloride Posterior circle to alkaline process.The method reaction yield is not high, remaining
Organic impurity influence product quality.Pyrolysismethod：Use heat empty in the equipment such as swinging heating furnace, multi-layer discs pyrolysis furnace abraum salt
Gas directly or indirectly 600 ~ 800 DEG C of heating, under anoxic conditions, organic carbon, cracking or volatilization in abraum salt reach that purification is useless
The purpose of salt.The method is because heating and temperature control is below abraum salt fusion point, and abraum salt and hot blast time of contact are limited, causes folder
The miscellaneous high organic matter of boiling point between abraum salt crystal is difficult to all be pyrolyzed or evaporate, organic for what is wrapped up in abraum salt crystal
Thing removal effect is just worse, and obtained net salt residual organic component content is difficult to control；The other method is under anoxic conditions, to give up
The carbonization of an organic matter part is stayed in salt after cleaning in salt, is largely to be entered by pyrolysis devolatilization in hot blast, it is impossible to realize
Ash or black is presented in the permineralization of organic matter, obtained net salt, it is difficult to reach recycling standard, it is necessary to dissolve, coagulation,
The further purified treatment such as filtering.The method is substantially that solid contaminant is shifted into the process as gaseous contaminant, while can also
Produce high slat-containing wastewater.The other method is in operation because temperature control is bad, and table can occur for equipment local area abraum salt
Thin-skinnedization, causes equipment to bond and is difficult to continuous and steady operation.
The content of the invention
Goal of the invention：For the deficiencies in the prior art, it is an object of the invention to provide a kind of abraum salt recycling
Technique, while to realize that the thorough purification of abraum salt meets requirements of comprehensive utilization, realizes that organic exhaust gas heat damage is handled, reduces comprehensive
Close the secondary pollution such as waste water, waste gas discharge during utilizing.It is a further object of the present invention to provide a kind of above-mentioned abraum salt resource
The special purpose device of chemical industry skill.
Technical scheme：In order to realize foregoing invention purpose, the technical solution adopted by the present invention is：
A kind of abraum salt process for reclaiming：Abraum salt is sent to molten salt furnace furnace top distributing gear by feed bin by adhesive tape feeder, equal from furnace roof
It is even to be sprinkled into stove, send into natural gas and air, the high temperature cigarette that combustion of natural gas is produced from the air port positioned at lower furnace along stove week
Gas realizes that the organic compound combustion in abraum salt drying, preheating and abraum salt is destroyed by fire in stove in uphill process, the fuse salt that furnace bottom is collected
Export and flow out from fuse salt, the net salt of melting of furnace bottom outflow spreads to fuse salt by speed governing by filtering and distributing device outside stove
On the stainless steel band of motor drag, due to the pressure cooling effect of steel band back side cooling water, the fuse salt quilt spread on steel band
Rapid cooling, solidification forming, being shaped as net salt shaping are approximate hemispherical, and by adjusting steel band one side aperture, different grains are made
The approximate hemispherical net salt particle in footpath, is packed after collection；The organic compounds containing small part that molten salt furnace furnace roof comes out are filtered, alkali
Enter the further heat damage of heat accumulation type thermal oxidation stove after washing, the organic exhaust gas by heat damage is discharged into greatly after alkali cleaning is purified
Gas.
Described abraum salt process for reclaiming：Fuse salt enter cooling granulation machine before first filtering remove fused salt in charcoal ash and other
Impurity, is then uniformly scattered onto on the stainless steel band that speed motor is dragged by fuse salt distributing device.
Described abraum salt process for reclaiming：Fused salt furnace exhaust gas first passes through filtering before entering RTO stoves, remove tail gas and take out of less
Part salt grain, then alkali cleaning again removes sour gas in tail gas, while further removing salt grain.
Described abraum salt process for reclaiming, it is characterised in that：The heat that molten salt furnace is produced is steamed by cooling water heat exchange by-product
Vapour is recycled.
The special purpose device of described abraum salt process for reclaiming, including abraum salt feeding system, abraum salt fusing system, vent gas treatment
System and net salt cooling granulation system；Described abraum salt feeding system includes abraum salt feed bin, adhesive tape feeder, and adhesive tape feeder is set
Between abraum salt feed bin and distributing device；Described abraum salt fusing system includes distributing device, molten salt furnace, air and gas inlet,
Distributing device is located at the top of molten salt furnace, and air and gas inlet are located at molten salt furnace bottom；Described exhaust treatment system include according to
Pneumatic filter, caustic wash tower, spark arrester, RTO stoves, caustic wash tower and the purification Gas chimney of secondary series connection；Described net salt cooling granulation
System includes fused salt filter, belt cooling granulation machine, net salt feed bin, and belt cooling granulation machine is located at fused salt filter and net salt
Between feed bin, fused salt filter is connected with molten salt furnace；
The molten salt furnace is that abraum salt is dried, preheated and melting integrated furnace；Molten salt furnace is that cross section is circular shaft furnace, uses steel plate
Make furnace shell, built in shell and cooling water heat exchange facilities are set in fireproof brick inner lining, refractory brick, lower furnace is along stove Zhou Bushe natural gases and sky
Pneumatic transmission entrance, furnace bottom is provided with fuse salt from flow export；Body of heater is different with Temperature Distribution by processing abraum salt function, is divided into from top to down
Drying, preheating section, abraum salt melt zone, fuse salt drippage section, fuse salt collection section, abraum salt is in residing time in furnace 5-12S.
The drying of body of heater, preheating section temperature are 150 ~ 800 DEG C, abraum salt melt zone temperature is 800 ~ 1000 DEG C, fuse salt drop
It is 1000 ~ 1100 DEG C to fall section temperature, and fuse salt collection section temperature is 900 ~ 1000 DEG C.
The abraum salt distributing device is located at the top of molten salt furnace, and using bell-less BF tep distributing mode, string tank is divided into as needed
With simultaneously tank bell-less BF tep structure, including by batch can, blow-off valve, material flow gate, central throat tube, distributing device, swivel chute.
The fuse salt cooling granulation machine includes buncher, one side drilling steel band, steel band back side sprinkling device for cooling water.
The feeding of the present invention and cloth operating unit：Feed bin abraum salt is transported to the material feeding of bell-less BF tep distributing device by adhesive tape
Bucket, is entered by discharge valve and weighs batch can, adjusted by doses, plate cutting center pipe of the abraum salt by weighing batch can along distributing device enters
Enter the chute of rotation, abraum salt is uniformly sprinkled into stove with the rotation of chute from fused salt furnace roof.The distributing device has cloth solid
Abraum salt is uniform, and because its peculiar sealing is designed, can prevent molten salt furnace furnace gas from leaking, and reducing air-flow conveying needs first to do
Dry, unit and the drying such as mill, sieve, mill, the volatilization for the organic matter that abraum salt contains and sieve of milling in screening process
The secondary environmental pollution problem for dividing dust to bring.
The abraum salt of the present invention is dried, preheated and the integrated molten salt furnace of fusing：Mainly include body of heater, furnace lining, air-supply（Natural gas
And air）Pipe, cooling system etc..Molten salt furnace uses vertical heater, and body of heater is different with Temperature Distribution by processing abraum salt function, from furnace roof
It is divided into furnace bottom：Abraum salt is dried, preheating section（150~800℃）, abraum salt melt zone（800~1000℃）, fuse salt drippage section
（1000~1100℃）, fuse salt collection section（900~1000℃）.Abraum salt is uniformly sprinkled into molten salt furnace, the low natural gas combustion of stove from furnace roof
The heat produced and abraum salt counter current contacting are burnt, realizes that the vaporization of moisture in abraum salt is dried, the preheating and melting of abraum salt, abraum salt is in stove
Interior residence time 5-12S, it is organic between abraum salt crystal and in crystal because abraum salt is heated to molten state and the residence time is longer
The abundant mineralising of impurity, abraum salt is thoroughly purified.Furnace body temperature is controlled and the removal of heat uses water cooling mode, for anti-stove
Body corrodes and destroyed, using different refractory linings.
The fuse salt cooling and granulation of the present invention：Refer to the net salt of melting of furnace bottom outflow by filtering and distributing device outside stove,
Fuse salt is spread on the stainless steel band dragged by buncher, steel band can be drilled with the brill of different pore size by one side as needed
Hole, due to the pressure cooling effect of steel band back side cooling water, the fuse salt spread on steel band is rapidly cooled, solidification forming,
Being shaped as net salt shaping is approximate hemispherical, by adjusting aperture, can be made into the approximate hemispherical net salt particle of different-grain diameter,
Packed after collection.
The organic exhaust gas heat damage and purification of the present invention：Abraum salt integrated molten salt furnace decline during, dry, preheat it is low
Temperature section section have a small amount of organic exhaust gas it is imperfect combustion and be pyrolyzed come out, this part organic exhaust gas enter heat accumulation type thermal oxidation stove
（RTO stoves）Further destroyed at a temperature of 720-850 DEG C, the acidic materials that the waste gas of burning generation contains are up to standard after alkali cleaning
Discharge.
Beneficial effect：Compared with existing method, remarkable advantage of the invention includes：
1）The present invention takes the organic impurities that high-temperature melting method not only can be to carry secretly between permineralization abraum salt crystal, due to abraum salt plus
The organic impurities that heat is arrived in molten condition, abraum salt crystal is also able to abundant mineralising, and obtained net purity salt is high, organic impurities is micro-
Amount, it is not necessary to purify again, can be with direct utilization；
2）The present invention uses vertical molten salt furnace, and abraum salt is dried, preheated, being melted in molten salt furnace and realized during decline, being not required to
Other abraum salt is wanted to dry, preheat facility, it is to avoid because the organic exhaust gas that abraum salt is dried, warm is produced collects problem；In addition
Because being vertical heater, overcoming abraum salt partial melting in the equipment such as swinging heating furnace, multi-layer discs pyrolysis furnace causes equipment to be glued
Knot problem；
3）Abraum salt of the present invention is used without bell top distributor, and charging is uniform, reduces abraum salt because dry needed for air flow delivery mode
The organic exhaust gas of dry, mill processes and its process produces and collected link；
4）Due to easily being lumpd after abraum salt melting cooling, fuse salt of the present invention can realize continuous coo1ing, granulation, and as needed may be used
The net salt particle of different-grain diameter is made；
5）The present invention uses heat accumulation type thermal oxidation stove（RTO stoves）The small part that produces is unburned in processing fused salt process completely has
Machine waste gas, it is to avoid the secondary pollution problem of waste gas in abraum salt processing procedure.
Brief description of the drawings
Fig. 1 is the schematic diagram of the special purpose device of abraum salt process for reclaiming.
Embodiment
Below by specific embodiment, the present invention is further described, it is noted that for the common side of this area
For method personnel, under the premise without departing from the principles of the invention, some variations and modifications can also be made, these are also considered as belonging to
Protection scope of the present invention.
The special purpose device of abraum salt process for reclaiming, is cooled down as shown in figure 1, main structural components include net salt feed bin 1, belt
Comminutor 2, fused salt filter 3, air and gas inlet 4, molten salt furnace 5, abraum salt feed bin 6, adhesive tape feeder 7, distributing device 8,
Pneumatic filter 9, caustic wash tower 10, spark arrester 11, switching valve 12, RTO stoves 13, caustic wash tower 14 and purification Gas chimney 15, are divided into useless
Salt feeding system, abraum salt fusing system, exhaust treatment system, fused salt cooling granulation system.
Wherein, abraum salt feeding system includes abraum salt feed bin 6, adhesive tape feeder 7, and adhesive tape feeder 7 is located at the He of abraum salt feed bin 6
Between distributing device 8；Abraum salt fusing system includes distributing device 8, molten salt furnace 5, air and gas inlet 4, and distributing device 8 is located at fused salt
The top of stove 5 is simultaneously connected with molten salt furnace 5, and air and gas inlet 4 are located at the bottom fuse salt outlet top of molten salt furnace 5 and molten salt furnace
5 connections；Exhaust treatment system includes pneumatic filter 9, caustic wash tower 10, spark arrester 11, switching valve 12, RTO stoves 13, caustic wash tower 14
With purification Gas chimney 15, pneumatic filter 9 is connected with the gas vent of molten salt furnace 5, pneumatic filter 9, caustic wash tower 10, spark arrester
11st, RTO stoves 13, caustic wash tower 14, purification Gas chimney 15 are sequentially connected in series connection, in spark arrester 11 and RTO stoves 13, RTO stoves 13 and alkali
Switching valve 12 is equipped with the connecting pipeline for washing tower 14；Net salt cooling granulation system includes fused salt filter 3, belt cooling granulation
Machine 2, net salt feed bin 1, fused salt filter 3 and the fused salt outlet of molten salt furnace 5 are fused salt filter 3, belt cooling granulation machine 2, net
Salt feed bin 1 is sequentially connected in series connection.
Also need additionally to arrange air and natural gas supply air system, circulating water cooling system on abraum salt fusing system, be used for
Ventilation and cooling.Supply air system refers to natural gas and combustion-supporting gas air, and the heat needed for abraum salt melting is using clean energy resource day
So gas burning is produced, and air is using blower fan conveying, Gas Exploitation pipeline, the integrated fused salt of air hose and natural gas tube edge
The fuse salt drippage section of stove is evenly arranged.Circulating water cooling system：Because molten salt furnace in-furnace temperature is higher, in order to reduce liner
Temperature, protects inner lining of furnace, increases the service life, liner waste heat is removed using water cooling system.
In the special purpose device, molten salt furnace 5 is that cross section is circular shaft furnace, is made to build fireproof brick inner lining in furnace shell, shell with steel plate,
Heat exchange facilities are set in refractory brick.Body of heater is divided into dry, preheating section from top to down（150~800℃）, abraum salt melt zone（800~1000
℃）, fuse salt drippage section（1000~1100℃）, fuse salt collection section（900~1000℃）.Abraum salt is by distributing device 8 from furnace roof
Uniformly it is sprinkled into stove, natural gas and air, the high temperature that combustion of natural gas is produced is sent into from the air port positioned at lower furnace along stove week
Flue gas realizes that the organic compound combustion in abraum salt drying, preheating and abraum salt is destroyed by fire in stove in uphill process, the melting that furnace bottom is collected
Salt exits into net salt cooling granulation system from fuse salt outlet.What the combustion tail gas of generation and drying, preheating section were produced lacks
Part organic exhaust gas is discharged into exhaust treatment system from furnace roof exhaust outlet.Liner and in-furnace temperature are using heat exchange facilities in stove
And stove outer circulation cooling water system control liner and in-furnace temperature.
In the special purpose device, distributing device 8 use bell-less BF tep distributing mode, be divided into as needed string tank and and tank without
Bell top construction, it is main include being sequentially connected in series by batch can, blow-off valve, material flow gate, central throat tube, distributing device,
Swivel chute, is characterized in, for solid material, adjusting the practicable a variety of uniform distribution modes in swivel chute inclination angle.Abraum salt feed bin 6
In abraum salt by adhesive tape feeder 7 be transported in distributing device 8 by batch can, molten salt furnace 8 is uniformly added into by distributing device.
In net salt cooling granulation system, the fuse salt that molten salt furnace 5 comes out flows into fused salt filter 3, removes charcoal in fused salt
Ash and other impurities, the distributing device carried by belt cooling granulation machine 2, uniformly flow through the stainless steel band drilled with one side
On, regulation steel band back side cooling water flow and drilling size realize the quick cooling of fused salt, the net of different-grain diameter are generated on demand
Salt enters after net salt feed bin 1, packaging as product resourceization utilization.
In exhaust treatment system, the fused salt tail gas that molten salt furnace 5 comes out may also completely have containing small part is unburned
The sour gas generated in machine waste gas and combustion process, tail gas may also take small part salt grain out of, and tail gas first passes around gas
Filter 9, removes salt grain, is further removal salt grain and sour gas corrosion follow-up equipment, and tail gas enters after caustic wash tower 10,
Enter heat accumulation type thermal oxidation stove by spark arrester 11（RTO stoves）13 remove small part organic exhaust gas in tail gas.RTO stoves be Room 2 with
On, inside set ceramic body and carry out accumulation of heat and heat exchange, configuration spark arrester 11 and caustic wash tower 10 are as safety precautions, and airintake direction is adjusted
Save as switching valve 12.Natural gas is used for auxiliary fuel, operation temperature is 720-850 DEG C, organic matter destroys efficiency by fire more than 95%.
RTO outlet of stills tail gas further removes the sour gas that its combustion process is produced using caustic wash tower 14, is carried by caustic wash tower 14
Demister demisting after by purifying Gas chimney 15 be discharged into air by air-introduced machine.
Following examples are based on above-mentioned process unit and carried out.
Embodiment 1
Certain agricultural chemicals, medicine intermediate manufacturing enterprise produce abraum salt composition be NaCl 97%, water 1.74%, benzoic acid 0.23%, 3,
The chloro- 5- carboxylic acid sodiums isothiazole 0.12% of 4- bis-, p-methyl benzenesulfonic acid 0.21%, ammonolysis thing 0.35%, toluene 0.35%.Equipment and technique
Primary operational technical parameter is：Molten salt furnace control temperature be respectively：Drying, 200 DEG C of preheating section, 850 DEG C of melt zone, fuse salt drop
It is 8S in residing time in furnace to fall 1000 DEG C of section, 900 DEG C of fuse salt collection section, abraum salt；Molten salt furnace offgas outlet temperature is 200
DEG C, RTO stoves intake air temperature is 50 DEG C, and organic exhaust gas destroys room temperature by fire for 800 DEG C, goes out 100 DEG C of RTO furnace exhaust gas temperature, passes through alkali
Tower after funnel exhaust emissions temperature is washed for 40 DEG C.Net salt NaCl contents 100%, TOC after being purified by molten salt furnace（Total organic carbon）Not
Detection, can meet ion film caustic soda NaCl quality requirements, and exhaust emissions is met《Discharge standard of air pollutants》Table 2
Middle secondary standard require limit value and《Dangerous waste incineration contamination control standard》（GB18484-2001）Pollutant emission is limited in table 3
Value is required.
Embodiment 2
The abraum salt composition that certain pigment production enterprise produces is sodium sulphate 94.86%, 1,4- diamino-anthraquinones 1.74%, 1,4- dihydroxy
Anthraquinone 1.21%, organic other impurities 2.19%.Equipment and technique primary operational technical parameter are：Molten salt furnace control temperature difference
For：Drying, 1050 DEG C of section of 250 DEG C of preheating section, 900 DEG C of melt zone, fuse salt drippage, 920 DEG C of fuse salt collection section, abraum salt are in stove
The interior residence time is 10S；Molten salt furnace offgas outlet temperature is 200 DEG C, and RTO stoves intake air temperature is 50 DEG C, and organic exhaust gas destroys room by fire
Temperature is 800 DEG C, goes out 100 DEG C of RTO furnace exhaust gas temperature, is 40 DEG C by caustic wash tower after funnel exhaust emissions temperature.Pass through fused salt
Net salt sodium sulphate content 100%, TOC after stove purification（Total organic carbon）Do not detect, industrial anhydrous sodium sulfate can be met（GB/T
6009-2014）Quality requirement, exhaust emissions is met《Discharge standard of air pollutants》Secondary standard requires limit value in table 2
With《Dangerous waste incineration contamination control standard》（GB18484-2001）Pollutant emission limit requirement in table 3.
Claims (9)
1. a kind of abraum salt process for reclaiming, it is characterised in that：Abraum salt is sent to molten salt furnace furnace roof cloth by feed bin by adhesive tape feeder
Glassware, is uniformly sprinkled into stove from furnace roof, and natural gas and air, combustion of natural gas are sent into from the air port positioned at lower furnace along stove week
The high-temperature flue gas of generation realizes that the organic compound combustion in abraum salt drying, preheating and abraum salt is destroyed by fire in stove in uphill process, furnace bottom
The fuse salt of collection is exported from fuse salt to flow out, and the net salt of melting of furnace bottom outflow is by filtering and distributing device outside stove, by fuse salt
Spread on the stainless steel band dragged by buncher, due to the pressure cooling effect of steel band back side cooling water, spread to steel band
On fuse salt be rapidly cooled, solidification forming, being shaped as net salt shaping be approximate hemispherical, by adjusting steel band one side hole
Footpath, is made the approximate hemispherical net salt particle of different-grain diameter, is packed after collection；It is organic containing small part that molten salt furnace furnace roof comes out
Enter the further heat damage of heat accumulation type thermal oxidation stove after the filtering of thing waste gas, alkali cleaning, pass through alkali cleaning by the organic exhaust gas of heat damage
Air is discharged into after purification.
2. abraum salt process for reclaiming according to claim 1, it is characterised in that：Fuse salt enters first mistake before cooling granulation machine
Filter off and remove charcoal ash and other impurities in fused salt, the stainless steel band that speed motor is dragged then is uniformly scattered onto by fuse salt distributing device
On.
3. abraum salt process for reclaiming according to claim 1, it is characterised in that：Fused salt furnace exhaust gas enters before RTO stoves first
By filtering, remove tail gas and take small part salt grain out of, then alkali cleaning again removes sour gas in tail gas, while further removing
Salt grain.
4. abraum salt process for reclaiming according to claim 1, it is characterised in that：The heat that molten salt furnace is produced passes through cooling water
The byproduct steam that exchanges heat is recycled.
5. the special purpose device of the abraum salt process for reclaiming described in claim 1, it is characterised in that：Including abraum salt feeding system, give up
Salt fusing system, exhaust treatment system and net salt cooling granulation system；Described abraum salt feeding system includes abraum salt feed bin, adhesive tape
Feeder, adhesive tape feeder is located between abraum salt feed bin and distributing device；Described abraum salt fusing system includes distributing device, fused salt
Stove, air and gas inlet, distributing device are located at the top of molten salt furnace, and air and gas inlet are located at molten salt furnace bottom；It is described
Exhaust treatment system include the pneumatic filter, caustic wash tower, spark arrester, RTO stoves, caustic wash tower and the purified gas cigarette that are sequentially connected in series
Chimney；Described net salt cooling granulation system includes fused salt filter, belt cooling granulation machine, net salt feed bin, belt cooling granulation
Machine is located between fused salt filter and net salt feed bin, and fused salt filter is connected with molten salt furnace.
6. the special purpose device of abraum salt process for reclaiming according to claim 5, it is characterised in that：The molten salt furnace is abraum salt
Dry, preheat and melting integrated furnace；Molten salt furnace is that cross section is circular shaft furnace, is made to build refractory brick in furnace shell, shell with steel plate
Cooling water heat exchange facilities are set in liner, refractory brick, lower furnace sends into mouth along stove Zhou Bushe natural gases and air, and furnace bottom is provided with molten
Melt salt from flow export；Body of heater is different with Temperature Distribution by processing abraum salt function, drying, preheating section, abraum salt is divided into from top to down molten
Melt section, fuse salt drippage section, fuse salt collection section, abraum salt is in residing time in furnace 5-12S.
7. the special purpose device of abraum salt process for reclaiming according to claim 5, it is characterised in that：The abraum salt distributing device position
At the top of molten salt furnace, using bell-less BF tep distributing mode, string tank and simultaneously tank bell-less BF tep structure are divided into as needed, including
By batch can, blow-off valve, material flow gate, central throat tube, distributing device, swivel chute.
8. the special purpose device of abraum salt process for reclaiming according to claim 5, it is characterised in that：The fuse salt cooling is made
Grain machine includes buncher, one side drilling steel band, steel band back side sprinkling device for cooling water.
9. the special purpose device of abraum salt process for reclaiming according to claim 6, it is characterised in that：Drying, the preheating of body of heater
Duan Wendu is 150 ~ 800 DEG C, abraum salt melt zone temperature is 800 ~ 1000 DEG C, and fuse salt drippage section temperature is 1000 ~ 1100 DEG C, is melted
Melt salt collection section temperature for 900 ~ 1000 DEG C.
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| CN108954344A (en) * | 2018-07-29 | 2018-12-07 | 吴军伟 | Industrial waste salt dregs innocent treatment method |
| CN109681880A (en) * | 2018-11-16 | 2019-04-26 | 常州工学院 | A kind of processing method of the solid waste with high salt containing organic matter |
| CN110201976A (en) * | 2019-05-30 | 2019-09-06 | 北京航天环境工程有限公司 | A kind of abraum salt recycling treatment processing system and application |
| CN110479734A (en) * | 2019-07-31 | 2019-11-22 | 同济大学 | A kind of method and device thereof using alkaline melt harmless treatment industrial waste salt |
| CN110642271A (en) * | 2019-10-31 | 2020-01-03 | 江苏省环境科学研究院 | Device and method for melting treatment and refining of industrial waste salt |
| CN111790731A (en) * | 2020-07-20 | 2020-10-20 | 杭州碳氢科技研究有限公司 | Industrial waste salt conversion device and method |
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| CN108954344A (en) * | 2018-07-29 | 2018-12-07 | 吴军伟 | Industrial waste salt dregs innocent treatment method |
| CN109681880A (en) * | 2018-11-16 | 2019-04-26 | 常州工学院 | A kind of processing method of the solid waste with high salt containing organic matter |
| CN110201976A (en) * | 2019-05-30 | 2019-09-06 | 北京航天环境工程有限公司 | A kind of abraum salt recycling treatment processing system and application |
| CN110479734A (en) * | 2019-07-31 | 2019-11-22 | 同济大学 | A kind of method and device thereof using alkaline melt harmless treatment industrial waste salt |
| CN110642271A (en) * | 2019-10-31 | 2020-01-03 | 江苏省环境科学研究院 | Device and method for melting treatment and refining of industrial waste salt |
| CN111790731A (en) * | 2020-07-20 | 2020-10-20 | 杭州碳氢科技研究有限公司 | Industrial waste salt conversion device and method |
| CN112474720A (en) * | 2020-11-09 | 2021-03-12 | 宿迁安湘环保科技有限公司 | Method for separating low-temperature inorganic salt in hazardous waste |
| CN112404110B (en) * | 2020-11-30 | 2023-07-14 | 北京航天晟永化工装备有限公司 | Method and system for treating waste salt containing organic matters by adopting double-circulation thermodynamic purification technology |
| CN112404110A (en) * | 2020-11-30 | 2021-02-26 | 孙立凤 | Method and system for treating waste salt containing organic matters by adopting double-circulation thermal purification technology |
| CN114011835A (en) * | 2021-10-27 | 2022-02-08 | 安徽普朗膜技术有限公司 | Industrial waste salt recycling treatment system and process thereof |
| CN114011835B (en) * | 2021-10-27 | 2022-07-19 | 安徽普朗膜技术有限公司 | Industrial waste salt recycling treatment system and process thereof |
| CN114263925A (en) * | 2021-12-30 | 2022-04-01 | 湖北信业热能工程有限公司 | Waste heat utilization method for waste flue gas of hot blast stove |
| CN114263925B (en) * | 2021-12-30 | 2024-03-29 | 湖北信业热能工程有限公司 | Method for utilizing waste heat of waste flue gas of hot blast stove |
| CN114522958A (en) * | 2022-02-27 | 2022-05-24 | 瀚蓝绿电固废处理(佛山)有限公司 | Method for rapidly cooling high-temperature liquid molten salt |
| CN114522958B (en) * | 2022-02-27 | 2023-05-23 | 瀚蓝绿电固废处理(佛山)有限公司 | Rapid cooling method for high-temperature liquid molten salt |
| CN115090660A (en) * | 2022-06-28 | 2022-09-23 | 东北大学 | Tower-type solar high-temperature melting industrial waste salt resource utilization system |
| CN115156260A (en) * | 2022-07-13 | 2022-10-11 | 东北大学 | Industrial waste salt melting purification-granulation system and method |
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