CN106865593B - A kind of recovery system and recovery method of strontium chloride - Google Patents
A kind of recovery system and recovery method of strontium chloride Download PDFInfo
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- CN106865593B CN106865593B CN201710108805.1A CN201710108805A CN106865593B CN 106865593 B CN106865593 B CN 106865593B CN 201710108805 A CN201710108805 A CN 201710108805A CN 106865593 B CN106865593 B CN 106865593B
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- strontium chloride
- ammonia
- evaporator
- connect
- storage tank
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- 229910001631 strontium chloride Inorganic materials 0.000 title claims abstract description 96
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 title claims abstract description 95
- 238000011084 recovery Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 142
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 71
- 239000012535 impurity Substances 0.000 claims abstract description 23
- 239000003595 mist Substances 0.000 claims abstract description 22
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 33
- 239000000908 ammonium hydroxide Substances 0.000 claims description 31
- 239000006166 lysate Substances 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 abstract description 30
- 238000004064 recycling Methods 0.000 abstract description 23
- 239000007787 solid Substances 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 abstract description 7
- 229910052712 strontium Inorganic materials 0.000 abstract description 5
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 abstract description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000012086 standard solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- CPBJMKMKNCRKQB-UHFFFAOYSA-N 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one Chemical compound C1=C(O)C(C)=CC(C2(C3=CC=CC=C3C(=O)O2)C=2C=C(C)C(O)=CC=2)=C1 CPBJMKMKNCRKQB-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BUPUEZMOSVAXJH-UHFFFAOYSA-L [Sr+2].[Cl-].N.[Cl-] Chemical compound [Sr+2].[Cl-].N.[Cl-] BUPUEZMOSVAXJH-UHFFFAOYSA-L 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 239000013056 hazardous product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- JMXROTHPANUTOJ-UHFFFAOYSA-H naphthol green b Chemical compound [Na+].[Na+].[Na+].[Fe+3].C1=C(S([O-])(=O)=O)C=CC2=C(N=O)C([O-])=CC=C21.C1=C(S([O-])(=O)=O)C=CC2=C(N=O)C([O-])=CC=C21.C1=C(S([O-])(=O)=O)C=CC2=C(N=O)C([O-])=CC=C21 JMXROTHPANUTOJ-UHFFFAOYSA-H 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/20—Halides
- C01F11/24—Chlorides
- C01F11/32—Purification
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/406—Alkaline earth metal or magnesium compounds of strontium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Toxicology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Treating Waste Gases (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
This application provides a kind of recovery system of strontium chloride and recovery method, which includes dissolving unit；The impurity removing unit being connect with the dissolving unit；The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, and top is equipped with gas outlet, and lower section is equipped with liquid outlet；The mist projection granulating fluid bed being connect with the liquid outlet of the evaporator.Recovery system provided by the present application greatlys save the exploitation of strontium mine by being dissolved, being cleaned by pending strontium chloride, evaporated and mist projection granulating, the strontium chloride recycled meet charge and discharge ammonia condition, can reuse.The experimental results showed that：The main content of the strontium chloride of recovery system recycling is suitable with the main content of former strontium chloride 99% or more.The filling solid ammonia storage tank of same ratio is pressed by the solid ammonia storage tank of the filling certain volume of the strontium chloride of recycling, then with former strontium chloride, ammonia experiment is filled repeatedly under the same conditions, the experimental results showed that the anhydrous strontium chloride activity of recycling is suitable with original strontium chloride.
Description
Technical field
This application involves the recovery systems and recycling of vehicle maintenance service systems technology field more particularly to a kind of strontium chloride
Method.
Background technology
With the progress of economic society, auto industry is fast-developing, the increasing number of automobile, environment caused by vehicle exhaust
Pollute also getting worse.Therefore, the purifying problem of vehicle exhaust is increasingly subject to the attention of people.
Vehicle maintenance service system is to use ammonia storage tank, and solid particulate matter strontium chloride is stored ammonia and is released when needed
It puts, and removes NO after catalyst reactionxHazardous material has reached the purpose of cleaning of off-gas.This method is safe and reliable, at low cost, continuous
The mileage that navigates is long.
However solid ammonia storage tank is in use, with the increase of charge and discharge ammonia number, in tank under strontium chloride material activity
Drop, reaches certain access times, need to carry out scrapping processing, and scrapping material in tank need to be recycled, and so that it is had again and fills
Put ammonia activity.
Invention content
In view of this, the application's is designed to provide a kind of recovery system and recovery method of strontium chloride, which returns
The strontium chloride of receipts meets charge and discharge ammonia condition.
The present invention provides a kind of recovery systems of strontium chloride, including dissolving unit；
The impurity removing unit being connect with the dissolving unit；
The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, and top is equipped with gas outlet, lower section
Equipped with liquid outlet；
The mist projection granulating fluid bed being connect with the evaporator.
Preferably, further include the condenser being connect with the gas outlet of the evaporator.
Preferably, the evaporator is additionally provided with steam inlet.
Preferably, further include the AMMONIA TREATMENT unit being connect with the condenser；
The AMMONIA TREATMENT unit includes the ammonium hydroxide pond being connect with the condenser and the ammonium hydroxide that is connect with the ammonium hydroxide pond
Rectifying column.
This application provides a kind of recovery methods of strontium chloride, include the following steps:
Ammonia storage tank is dissolved, lysate is obtained, the ammonia storage tank includes pending strontium chloride, ammonia and insoluble impurities；
The lysate is cleaned, then passes in evaporator and is evaporated, obtains concentrate and mass fraction
For 4~5% ammonium hydroxide；
The concentrate is subjected to mist projection granulating, obtains strontium chloride.
Preferably, the temperature of the dissolving is 55~65 DEG C；The time of the dissolving is 3~5h.
Preferably, the temperature of the evaporation is 85~95 DEG C.
Preferably, the content of strontium chloride is 40~45 Baume degrees in the concentrate.
Preferably, further include after obtaining the ammonium hydroxide that mass fraction is 4~5%：
The ammonium hydroxide that the mass fraction is 4~5% is distilled.
The present invention provides a kind of recovery systems of strontium chloride, including dissolving unit；It is removed with what the dissolving unit was connect
Different kinds of bonding units；The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, and top is equipped with gas outlet, lower section
Equipped with liquid outlet；The mist projection granulating fluid bed being connect with the liquid outlet of the evaporator.Recovery system provided by the present application passes through
Pending strontium chloride is dissolved, is cleaned, is evaporated and mist projection granulating, the strontium chloride recycled meet charge and discharge ammonia condition, energy
It reuses, greatlys save the exploitation of strontium mine.The experimental results showed that：The master of the strontium chloride of recovery system recycling provided by the present application
Content is suitable with the main content of former strontium chloride 99% or more.By the solid ammonia storage tank of the filling certain volume of the strontium chloride of recycling,
The filling solid ammonia storage tank of same ratio is pressed with former strontium chloride again, is filled ammonia experiment, experimental result table repeatedly under the same conditions
The anhydrous strontium chloride activity of bright recycling is suitable with original strontium chloride.
Description of the drawings
Fig. 1 is the structural schematic diagram of recovery system provided by the invention；
Fig. 2 is ammonia distillation process schematic.
Specific implementation mode
This application provides a kind of recovery systems of strontium chloride, including dissolving unit；
The impurity removing unit being connect with the dissolving unit；
The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, and top is equipped with gas outlet, lower section
Equipped with liquid outlet；
The mist projection granulating fluid bed being connect with the evaporator.
Recovery system provided by the present application is returned by being dissolved, being cleaned by pending strontium chloride, evaporated and mist projection granulating
It receives obtained strontium chloride and meets charge and discharge ammonia condition, can reuse, greatly save the exploitation of strontium mine.
Referring to Fig. 1, Fig. 1 is the structural schematic diagram of recovery system provided by the invention；
Recovery system provided by the invention includes dissolving unit；The dissolving unit is preferably dissolving tank.In the present invention,
The dissolving unit dissolves ammonia storage tank；The temperature of the dissolving is preferably 55~65 DEG C；The time of the dissolving is preferred
For 3~5h.
Recovery system provided by the invention includes the impurity removing unit being connect with the dissolving unit.In the present invention, described
Impurity removing unit is particularly preferred as filter press；In impurity removing unit, the partial impurities in above-mentioned lysate are removed；The part is miscellaneous
Matter includes iron filings, oil etc..
Recovery system provided by the invention includes the evaporator being connect with the impurity removing unit, and the evaporator is equipped with feed liquid
Entrance, top are equipped with gas outlet, and lower section is equipped with liquid outlet.In the present invention, the evaporator is preferably also provided with steam inlet；It will
Steam is passed into from steam inlet in evaporator, is exchanged heat by heat exchanger, and steam is condensed into hot water, for preheating lysate, together
When lysate be warming up to 85~95 DEG C, make ammonia and water evaporation, remove most of ammonia.Top in the inside of evaporator is preferred
Equipped with demister；Demister prevents liquid in gas-liquid separation to be pulled away.
In the present invention, the recovery system preferably further includes the condenser being connect with the gas outlet of the evaporator.
In the present invention, the ammonia is discharged by the top gas outlet of the evaporator, is entered in the condenser and is condensed, cold
It coagulates for ammonium hydroxide.
In the present invention, the recovery system preferably further includes the AMMONIA TREATMENT unit being connect with the condenser；It is described
AMMONIA TREATMENT unit includes the ammonium hydroxide pond being connect with the condenser and the ammonium hydroxide rectifying column that is connect with the ammonium hydroxide pond.In this hair
In bright, the mass fraction of ammonium hydroxide is 4~5% in the ammonium hydroxide pond；After the processing of ammonium hydroxide rectifying column, it is 20 to obtain mass fraction
~25% ammonium hydroxide.Recovery system provided by the present application further includes AMMONIA TREATMENT unit, ammonium hydroxide is also recycled, as industry
Ammonium hydroxide uses, and reaches the recycling of ammonium hydroxide.
In the present invention, the recovery system preferably further includes completing liquid bath；The entrance for completing liquid bath and above-mentioned steaming
The liquid outlet for sending out device is connected.In the present invention, the lysate be preferably evaporated in evaporator strontium chloride content be 40~
45 Baume degrees complete evaporation, more preferably 42 Baume degrees.Evaporation is completed, obtains completing liquid；The completion liquid passes through the evaporation
Liquid outlet discharge below device, into completion liquid bath.
Recovery system provided by the invention includes the mist projection granulating fluid bed being connect with the evaporator.The present invention is to described
Mist projection granulating fluid bed does not have special limitation, using mist projection granulating fluid bed well known to those skilled in the art.At this
In invention, the completion liquid is granulated in mist projection granulating fluid bed, obtains strontium chloride.
This application provides a kind of recovery methods of strontium chloride, include the following steps:
Ammonia storage tank is dissolved, lysate is obtained, the ammonia storage tank includes pending strontium chloride, ammonia and insoluble impurities；
The lysate is cleaned, then passes in evaporator and is evaporated, obtains concentrate and mass fraction
For 4~5% ammonium hydroxide；
The concentrate is subjected to mist projection granulating, obtains strontium chloride.
The present invention dissolves ammonia storage tank, obtains lysate, and the ammonia storage tank includes pending strontium chloride, ammonia and insoluble
Impurity.The temperature of the dissolving is preferably 55~65 DEG C；The time of the dissolving is preferably 3~5h.In the present invention, described molten
It includes eight ammonia strontium chloride solutions to solve liquid.
After obtaining lysate, the present invention cleans the lysate, then passes in evaporator and is evaporated, and obtains
The ammonium hydroxide for being 4~5% to concentrate and mass fraction.The temperature of the evaporation is preferably 90~95 DEG C.The application preferably will be molten
The content that solution liquid is evaporated to strontium chloride in concentrate is 40~45 Baume degrees.
The concentrate is carried out mist projection granulating by the application, obtains strontium chloride.It evaporates and obtains during the mist projection granulating
Vapor and remaining Ammonia recovery to ammonium hydroxide pond in.In this application, it is gone back after obtaining the ammonium hydroxide that mass fraction is 4~5%
Including：
The ammonium hydroxide that the mass fraction is 4~5% is distilled.
The schematic diagram for the ammonia distillation that the mass fraction is 4~5% is as shown in Fig. 2, Fig. 2 is the signal of ammonia distillation process
Figure.
The ammonium hydroxide that mass fraction is 4~5% is passed into rectifying column, ammonia is made to gasify, is vaporized through multiple Partial Liquid Phase
It is condensed with partial gas phase, and then the ammonia concn of rectifying column tower top is made to become larger, reached 20~25%, i.e. industrial ammonia, reach ammonia
The recycling of water.
In the present invention, the strontium chloride is granular anhydrous strontium chloride.The grain size of the strontium chloride be preferably 1.5mm~
3mm。
Strontium chloride Activity determination is recycled to measure：Sample 0.2g after heating loss (claiming accurate to 0.0002g) is weighed, is placed in
In 250mL conical flasks, it is dissolved in suitable quantity of water, adds 95% ethyl alcohol of 20mL, 15mL concentrated ammonia liquors that 0.1~0.2g o-cresolphthaleins-naphthalene is added
The green B mixed indicators of phenol (0.1g o-cresolphthalein+0.16g naphthol green Bs and the mixing of 30g sodium chloride are finely ground) use 0.05mol/L second two
It is terminal that amine tetraacethyl disodium standard titration solution, which is titrated to solution to become bright green from bluish violet,.Make blank assay simultaneously.
Calculate SrCl2(%)=C × (V1-V2) × 0.1586 × 100/m
In formula：C---EDTA concentration of standard solution, mol/L；
V1--- titrates sample consumption volume, mL；
Volume, mL are consumed when V2--- blank titrations；
M--- example weights, g；
0.1586--- and 1.00mL disodium ethylene diamine tetraacetates standard solution [C (EDTA)=1.000mol/L] is comparable
SrCl2Quality, g.
By using its main content of strontium chloride sample of EDTA titration measurings recycling 99% or more, with strontium chloride product
Main content is suitable.
Using the solid ammonia storage tank of the filling certain volume of the anhydrous strontium chloride of recycling, then with original anhydrous strontium chloride by identical
The filling solid ammonia storage tank of ratio is filled ammonia experiment repeatedly under the same conditions, the experimental results showed that the anhydrous strontium chloride of recycling
It is active suitable with original strontium chloride.
The present invention provides a kind of recovery systems of strontium chloride, including dissolving unit；It is removed with what the dissolving unit was connect
Different kinds of bonding units；The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, and top is equipped with gas outlet, lower section
Equipped with liquid outlet；The mist projection granulating fluid bed being connect with the liquid outlet of the evaporator.Recovery system provided by the present application passes through
Pending strontium chloride is dissolved, is cleaned, is evaporated and mist projection granulating, the strontium chloride recycled meet charge and discharge ammonia condition, energy
It reuses, greatlys save the exploitation of strontium mine.The experimental results showed that：The master of the strontium chloride of recovery system recycling provided by the present application
Content is suitable with the main content of former strontium chloride 99% or more.By the solid ammonia storage tank of the filling certain volume of the strontium chloride of recycling,
The filling solid ammonia storage tank of same ratio is pressed with former strontium chloride again, is filled ammonia experiment, experimental result table repeatedly under the same conditions
The anhydrous strontium chloride activity of bright recycling is suitable with original strontium chloride.
In order to further illustrate the application, with reference to embodiment to a kind of strontium chloride recovery system provided by the present application and
Recovery method is described in detail, but they cannot be interpreted as to the restriction to the application protection domain.
Embodiment 1
Ammonia storage tank is cut, is then added in dissolving tank, using 60 DEG C of water dissolution 4h, obtains lysate, it is described
Ammonia storage tank includes pending strontium chloride, ammonia and insoluble impurities；
The lysate is cleaned in impurity removed system, then passes in evaporator and is evaporated, the evaporation
Temperature be 85 DEG C, be evaporated to strontium chloride in concentrate content be 42 Baume degrees, also obtain mass fraction be 4~5% ammonia
Water；
By the concentrate into mist projection granulating is carried out in fluidized bed with spraying, granular anhydrous strontium chloride is obtained；
By mass fraction be 4~5% ammonium hydroxide be passed into ammonium hydroxide rectifying column carry out rectifying, obtain mass fraction be 20~
25% ammonium hydroxide, i.e. industrial ammonia.
The present invention recycles embodiment 1 obtained strontium chloride according to the test method described in above-mentioned technical proposal and carries out activity
Test, the main content of the strontium chloride of recycling are suitable with the main content of former strontium chloride 99% or more.By the anhydrous strontium chloride of recycling
The solid ammonia storage tank of filling certain volume, then the filling solid ammonia storage tank of same ratio is pressed with former strontium chloride, under the same conditions into
Row fills ammonia experiment repeatedly, the results showed that the anhydrous strontium chloride activity of recycling is suitable with original strontium chloride.
Embodiment 2
Ammonia storage tank is cut, is then added in dissolving tank, using 58 DEG C of water dissolution 4.5h, obtains lysate, institute
It includes pending strontium chloride, ammonia and insoluble impurities to state ammonia storage tank；
The lysate is cleaned in impurity removed system, then passes in evaporator and is evaporated, the evaporation
Temperature be 90 DEG C, be evaporated to strontium chloride in concentrate content be 43 Baume degrees, also obtain mass fraction be 4~5% ammonia
Water；
By the concentrate into mist projection granulating is carried out in fluidized bed with spraying, granular anhydrous strontium chloride is obtained；
By mass fraction be 4~5% ammonium hydroxide be passed into ammonium hydroxide rectifying column carry out rectifying, obtain mass fraction be 20~
25% ammonium hydroxide, i.e. industrial ammonia.
The present invention recycles embodiment 2 obtained strontium chloride according to the test method described in above-mentioned technical proposal and carries out activity
Test, the main content of the strontium chloride of recycling are suitable with the main content of former strontium chloride 99% or more.By the anhydrous strontium chloride of recycling
The solid ammonia storage tank of filling certain volume, then the filling solid ammonia storage tank of same ratio is pressed with former strontium chloride, under the same conditions into
Row fills ammonia experiment repeatedly, the results showed that the anhydrous strontium chloride activity of recycling is suitable with original strontium chloride.
As seen from the above embodiment, the present invention provides a kind of recovery systems of strontium chloride, including dissolving unit；With it is described
Dissolve the impurity removing unit of unit connection；The evaporator being connect with the impurity removing unit, the evaporator are equipped with feed liquid port, top
Equipped with gas outlet, lower section is equipped with liquid outlet；The mist projection granulating fluid bed being connect with the liquid outlet of the evaporator.The application provides
Recovery system by pending strontium chloride being dissolved, is cleaned, is evaporated and mist projection granulating, the strontium chloride recycled meets
Charge and discharge ammonia condition, can reuse, and greatly save the exploitation of strontium mine.The experimental results showed that：Recovery system provided by the present application is returned
The main content of the strontium chloride of receipts is suitable with the main content of former strontium chloride 99% or more.By the filling certain body of the strontium chloride of recycling
Long-pending solid ammonia storage tank, then the filling solid ammonia storage tank of same ratio is pressed with former strontium chloride, filled ammonia repeatedly under the same conditions
Experiment, the experimental results showed that the anhydrous strontium chloride activity of recycling is suitable with original strontium chloride.
The above is only the preferred embodiment of the application, it is noted that for the ordinary skill people of the art
For member, under the premise of not departing from the application principle, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as the protection domain of the application.
Claims (2)
1. a kind of recovery method of strontium chloride, includes the following steps:
Ammonia storage tank is dissolved, lysate is obtained, the ammonia storage tank includes pending strontium chloride, ammonia and insoluble impurities；It is described
The temperature of dissolving is 55~65 DEG C；The time of the dissolving is 3~5h；
The lysate is cleaned, then passes in evaporator and is evaporated, the temperature of the evaporation is 85~95 DEG C,
Obtain the ammonium hydroxide that concentrate and mass fraction are 4~5%；The ammonium hydroxide that the mass fraction is 4~5% is distilled, is distilled
Reach 20~25% to ammonia concn, obtains industrial ammonia；
The concentrate is subjected to mist projection granulating, obtains strontium chloride.
2. recovery method according to claim 1, which is characterized in that the content of strontium chloride is 40~45 in the concentrate
Baume degrees.
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