CN107298431A - A kind of use agricultural chemicals waste hydrochloric acid prepares the production system of titanium dioxide crystal seed - Google Patents
A kind of use agricultural chemicals waste hydrochloric acid prepares the production system of titanium dioxide crystal seed Download PDFInfo
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- CN107298431A CN107298431A CN201710522565.XA CN201710522565A CN107298431A CN 107298431 A CN107298431 A CN 107298431A CN 201710522565 A CN201710522565 A CN 201710522565A CN 107298431 A CN107298431 A CN 107298431A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
- C01B7/07—Purification ; Separation
- C01B7/0706—Purification ; Separation of hydrogen chloride
- C01B7/0712—Purification ; Separation of hydrogen chloride by distillation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/04—Oxides; Hydroxides
- C01G23/047—Titanium dioxide
- C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
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Abstract
The invention discloses the production system that a kind of use agricultural chemicals waste hydrochloric acid prepares titanium dioxide crystal seed, belong to titanium dioxide preparing technical field.The present invention includes waste hydrochloric acid upgrading unit, crystal seed hydrochloric acid dispensing unit and titanium dioxide crystal seed preparation unit, described waste hydrochloric acid upgrading unit is connected with crystal seed with hydrochloric acid dispensing unit, waste hydrochloric acid upgrading unit inputs crystal seed hydrochloric acid dispensing unit after agricultural chemicals waste hydrochloric acid is purified, absorbed, crystal seed is connected with the output channel of hydrochloric acid dispensing unit with the sour molten pot of titanium dioxide crystal seed preparation unit, and the hydrochloric acid that crystal seed is completed with hydrochloric acid configuration of described dispensing unit is inputted in sour molten pot.The present invention is using the by-product abraum salt acid of agricultural chemicals, and its is cheap, that is, reduces the expense that agricultural chemicals producer handles spent acid, and the cost that titanium dioxide producer buys technical hydrochloric acid is reduced again, and its equipment cost is relatively low, and corrosion resistance is strong, and service life is long.
Description
Technical field
The present invention relates to titanium dioxide crystal seed preparing technical field, agricultural chemicals waste hydrochloric acid system is used more specifically to one kind
The production system of standby titanium dioxide crystal seed.The present invention is carried out with it sour molten obtaining titanium dioxide by concentrating agricultural chemicals spent acid
Crystal seed, has reached reduction agricultural chemicals producer and the purpose of titanium dioxide producer production cost.
Background technology
Titanium dioxide is a kind of important Chinese white and porcelain glaze, have compared with other Chinese whites superior whiteness,
Tinting strength, tinting power, covering power, weatherability, heat resistance and chemical stability, particularly no toxicity.Titanium white production technique belongs to fine
Chemical industry scope, continues to optimize production technology, and in the case where not influenceing titanium white powder yield and quality, titanium white is reduced to greatest extent
The production cost of powder, is always the target that titanium white production producer is pursued.
In the agricultural chemicals such as preparation technology of Rogor, glyphosate etc., it is that acid content about exists to produce most accessory substances
15%-18% waste hydrochloric acid, because acid content is stronger, so can not directly discharge, agricultural chemicals producer is handling the by-product abraum salt
When sour, it usually needs neutralized with substantial amounts of alkali.And due to containing the impurity such as a large amount of NaCl in waste hydrochloric acid, in other application
Field can not directly be utilized.So, current agricultural chemicals producer, except the method using alkali neutralization, is exactly to provide funds to ask relevant manufacturers side
Processing is helped, for pesticide producing producer, the processing cost to waste hydrochloric acid undoubtedly can be very high.
For the process problem of spent acid in agricultural chemicals accessory substance, Patent No. CN200810233979.1, invention and created name
For：The technique that a kind of waste acid from glyphosate production is reclaimed, this application case 15%-20% using in glyphosate production condensation spent acid as
Raw material, the two-stage film-falling absorption tower of the two-in-one device by chlor-alkali production system is condensed into 31% hydrochloric acid, returns again to agricultural chemicals life
The glyphosate dehydrogenation section acidifying post of production system and condensation workshop section (phosphorous test) use, and to reach reduction production cost, subtract
The purpose of light environmental protection pressure.This application case realizes recycling for waste acid resource, a kind of good cost efficiency of can yet be regarded as
Scheme, if but want to realize that the program needs the supporting a set of waste acid recovery system of reaching the standard grade of agricultural chemicals producer, and not all agricultural chemicals producer
It can undertake or be ready to undertake this extra expenditure.
Patent No. CN201510938229.4, invention and created name is：A kind of non-blast furnace titaniferous slag sulphur of spent acid self-loopa
The method that acid system produces titanium white；This application case produces Producing Titanium Dioxide process using the non-blast furnace smelting titanium slag of vanadium titano-magnetite as raw material
The spent acid gone out carries out mixed processing with non-blast furnace titaniferous slag, obtains the relatively low pretreatment titanium slag of iron content, aluminium, magnesium, pretreatment titanium slag is again
Cured with concentrated sulfuric acid acidolysis, then produce titanium white through processes such as water logging, concentration, hydrolysis, roastings, spent acid returns to circulation and made after hydrolysis
With.The maximum of this application case is characterized in that titanium slag is pre-processed using titanium white waste acid, be both stripped of most of aluminium in titanium slag,
Magnesium addition, eliminates the influence of the impurity to Producing Titanium Dioxide such as aluminium, magnesium in titanium slag, simplifies ilmenite sulfuric acid process purification process,
Laid a good foundation for production high quality titanium white；The direct circulation for realizing titanium dioxide hydrolysis spent acid simultaneously is utilized, but this application case is first
Titanium white is produced first with non-blast furnace smelting titanium slag, comparing in actual production process is restricted, and titanium white is prepared not using the technique
Main flow can be turned into, secondly, the whole preparation technology of this application case is also cumbersome, and cost performance is relatively low.
And prepared on industrial waste acid is applied into titanium dioxide, Application No. CN201510818825.9 patent, also
Disclosing a kind of chlorination spent acid is used for the method for titanium dioxide coating；This application case passes through to washing the thick of recovery using chlorinated exhaust
Hydrochloric acid stand, precipitated after impurity elimination, dilution, and passes through the technique adjustment during titanium dioxide coating, it is to avoid other impurities
Deposited on titanium dioxide, obtain superior in quality titanium dioxide coated product.The crude salt acid of commercial recovery is applied to by this application case
It has been a kind of good refuse reclamation scheme, but how to develop industrial waste acid in titanium dioxide in titanium dioxide coating process
Other values in manufacturing process, such as prepare titanium dioxide crystal seed using waste hydrochloric acid, and it is effective not to be found through retrieval
Scheme, it is still necessary to further research.
The content of the invention
1. the invention technical problem to be solved
Present invention aims at solve pesticide producing by-product abraum salt acid in the prior art to have serious waste phenomenon, it is impossible to
Obtaining good recycling problem, there is provided the production system that a kind of use agricultural chemicals waste hydrochloric acid prepares titanium dioxide crystal seed；Using
The technical scheme that the present invention is provided, pesticide producing by-product abraum salt acid by concentration, absorb, concentration reaches 20%-22%, then with
Technical hydrochloric acid is made into the hydrochloric acid that concentration is 25%-28%, the preparation for titanium dioxide crystal seed；Can significantly it be dropped using this hydrochloric acid
Low titanium white powder production cost；And the production system provided using the present invention is corrosion-resistant, use time is long, easy to maintenance, and cost is low
It is honest and clean.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of use agricultural chemicals waste hydrochloric acid of the present invention prepares the production system of titanium dioxide crystal seed, including waste hydrochloric acid concentration list
Member, crystal seed hydrochloric acid dispensing unit and titanium dioxide crystal seed preparation unit, described waste hydrochloric acid upgrading unit are matched somebody with somebody with crystal seed with hydrochloric acid
Put unit to be connected, waste hydrochloric acid upgrading unit inputs crystal seed hydrochloric acid dispensing unit after agricultural chemicals waste hydrochloric acid is purified, absorbed, brilliant
Plant and be connected with the output channel of hydrochloric acid dispensing unit with the sour molten pot of titanium dioxide crystal seed preparation unit, crystal seed hydrochloric acid dispensing unit
The hydrochloric acid that configuration is completed is inputted in sour molten pot.
More specifically, described waste hydrochloric acid upgrading unit includes abraum salt acid storage tank, evaporator, gas-liquid separator, absorption
Tower and salt acid storage tank, abraum salt acid storage tank are connected with evaporator, are connected at the top of evaporator with gas-liquid separator, gas-liquid separator top
It is connected with absorption tower, absorbs tower bottom and be connected with salt acid storage tank.
More specifically, the horizontal level of evaporator is higher than abraum salt acid storage tank, and base of evaporator is connected with pipeline to abraum salt
Acid storage tank；Gas-liquid separator bottom is also connected with pipeline to abraum salt acid storage tank.
More specifically, absorption tower is connected by pipeline with deionized water storage tank.
More specifically, described crystal seed includes hydrochloric acid make-up tank, technical hydrochloric acid storage tank and crystal seed with hydrochloric acid dispensing unit
Salt acid storage tank is used, salt acid storage tank is connected with hydrochloric acid make-up tank, technical hydrochloric acid storage tank is also connected with hydrochloric acid make-up tank, hydrochloric acid make-up tank
Lower end is connected with crystal seed with salt acid storage tank.
More specifically, between described salt acid storage tank and hydrochloric acid make-up tank, hydrochloric acid make-up tank and technical hydrochloric acid storage tank it
Between, hydrochloric acid make-up tank and crystal seed be provided with transfering material pump between salt acid storage tank.
More specifically, described titanium dioxide crystal seed preparation unit include sour molten pot, sour molten filter press, sour molten pulping tank,
Metatitanic acid storage tank, metatitanic acid measuring tank, alkali soluble pot, alkali soluble filter press, alkali soluble pulping tank；According to the conveying direction of material, inclined titanium
Acid storage tank, metatitanic acid measuring tank, alkali soluble pot, alkali soluble filter press, alkali soluble pulping tank, sour molten pot, sour molten filter press, sour molten pulping tank
It is sequentially connected, crystal seed is connected with salt acid storage tank with sour molten pot.
More specifically, described crystal seed between salt acid storage tank and sour molten pot provided with crystal seed hydrochloric acid measuring tank.
More specifically, steam pipe is provided with described alkali soluble pot, and with chuck.
More specifically, described abraum salt acid storage tank, evaporator, gas-liquid separator, absorption tower, salt acid storage tank, hydrochloric acid are matched somebody with somebody
Groove processed, technical hydrochloric acid storage tank, crystal seed salt acid storage tank, crystal seed use graphite with hydrochloric acid measuring tank and sour molten pot inner materials.
3. beneficial effect
The technical scheme provided using the present invention, compared with existing known technology, with following remarkable result：
(1) a kind of use agricultural chemicals waste hydrochloric acid of the invention prepares the production system of titanium dioxide crystal seed, and its waste hydrochloric acid is by steaming
Device evaporation is sent out, the gas evaporated carries out gas-liquid separation by gas-liquid separator, and the HCl gases isolated are transferred to absorption tower, inhales
Receive tower and make absorbent using the deionized water for not bringing any impurity into, by above-mentioned simple concentration purification, absorb, you can obtain
The higher hydrochloric acid of purity, can only contain a small amount of NaCl, but NaCl impurity does not influence the preparation of titanium dioxide crystal seed, does not influence it to live
Property, it can be completely used for the preparation of titanium dioxide crystal seed；
(2) a kind of use agricultural chemicals waste hydrochloric acid of the invention prepares the production system of titanium dioxide crystal seed, in view of hydrochloric acid after concentration
Concentration can only achieve 20%-22%, it is impossible to meet requirement of the crystal seed preparation to concentration of hydrochloric acid, and further to hydrochloric acid after concentration again
Processing, it is necessary to cost is higher, technique is also more complicated, cost performance is not high；It is changed to not exclusively using the hydrochloric acid being concentrated to give, but
One crystal seed hydrochloric acid dispensing unit is set, by by technical hydrochloric acid and the hydrochloric acid mixture being concentrated to give, to obtain suitable titanium white
Hydrochloric acid prepared by powder crystal kind, further reduces the cost of titanium dioxide crystal seed preparation；
(3) a kind of use agricultural chemicals waste hydrochloric acid of the invention prepares the production system of titanium dioxide crystal seed, and agricultural chemicals waste hydrochloric acid passes through
Simple concentration purification, absorption, mixture can obtain hydrochloric acid prepared by suitable titanium dioxide crystal seed, and technique is simple；Agricultural chemicals waste hydrochloric acid
It can be obtained with relatively low price even without any cost from pesticide producing producer, on the one hand reduce the original of titanium dioxide producer
Expect purchase cost, on the other hand decrease agricultural chemicals producer and carry out neutralization discharge using liquid caustic soda, considerably reduce pesticide producing
Cost；
(4) a kind of use agricultural chemicals waste hydrochloric acid of the invention prepares the production system of titanium dioxide crystal seed, simple in construction, by turning
Expect that pump carries out material conveying, control of being more convenient for；Evaporator, gas-liquid separator set reflux, are more conducive to environmental protection and material
Recycling；The concentration of the waste hydrochloric acids such as abraum salt acid storage tank, evaporator, gas-liquid separator, equipment for purifying inner materials use graphite,
Corrosion, extension device service life can be avoided.
Brief description of the drawings
Fig. 1 is prepares the operation system structure schematic diagram of titanium dioxide crystal seed in the present invention using agricultural chemicals waste hydrochloric acid.
1st, abraum salt acid storage tank；2nd, evaporator；3rd, gas-liquid separator；4th, absorption tower；5th, salt acid storage tank；6th, hydrochloric acid make-up tank；
7th, technical hydrochloric acid storage tank；8th, crystal seed salt acid storage tank；9th, crystal seed hydrochloric acid measuring tank；10th, sour molten pot；11st, sour molten filter press；
12nd, sour molten pulping tank；13rd, metatitanic acid storage tank；14th, metatitanic acid measuring tank；15th, alkali soluble pot；16th, alkali soluble filter press；17th, alkali soluble system
Stock tank；18th, deionized water storage tank.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
A kind of use agricultural chemicals waste hydrochloric acid of the present embodiment prepares the production system of titanium dioxide crystal seed, agricultural chemicals spent acid is carried out dense
Contracting is handled, including purification, absorption, had both eliminated impurity in waste hydrochloric acid, its concentration can be improved again, reaches prepared by titanium dioxide crystal seed
Condition；Insecticide factory's processing waste hydrochloric acid cost can be reduced, the cost that titanium dioxide producer buys technical hydrochloric acid can be reduced again.Waste hydrochloric acid
Concentration principle is：Reach that hydrogen chloride gas is shifted from liquid phase to gas phase by adjusting evaporating pressure.
With reference to Fig. 1, the production system of the present embodiment specifically includes abraum salt acid storage tank 1, evaporator 2, gas-liquid separator 3, suction
Receive tower 4, salt acid storage tank 5, hydrochloric acid make-up tank 6, technical hydrochloric acid storage tank 7, crystal seed salt acid storage tank 8, crystal seed hydrochloric acid measuring tank 9,
The molten pot 10 of acid, sour molten filter press 11, sour molten pulping tank 12, metatitanic acid storage tank 13, metatitanic acid measuring tank 14, alkali soluble pot 15, alkali soluble
Filter press 16, alkali soluble pulping tank 17 and deionized water storage tank 18.
The described side of abraum salt acid storage tank 1 is directly connected with pump with evaporator 2, and the horizontal level of evaporator 2 is higher than useless
Salt acid storage tank 1, the bottom of evaporator 2 is connected with pipeline to abraum salt acid storage tank 1, and evaporator 2 contains a small amount of HCl dilute salt after the completion of evaporating
Acid is transferred to abraum salt acid storage tank 1 by Action of Gravity Field through the bottom pipe of evaporator 2.The top of evaporator 2 is connected with gas-liquid separator 3,
The gas of evaporator 2 goes to gas-liquid separator 3 by pipeline, and the top of gas-liquid separator 3 is connected with absorption tower 4, gas-liquid separator 3
In the HCl gases isolated be transferred to absorption tower 4 from the top of gas-liquid separator 3.The bottom of gas-liquid separator 3 is connected with pipeline to waste hydrochloric acid
Storage tank 1, liquid goes to abraum salt acid storage tank 1 by Action of Gravity Field from the outflow of the bottom pipe of gas-liquid separator 3.
The solvent on absorption tower 4 is deionized water, and the deionized water is added by the deionized water storage tank 18 on the top of absorption tower 4
Enter, make absorbent for deionized water to absorption tower 4, and do not bring any impurity into.The bottom of absorption tower 4 is connected with salt acid storage tank 5,
Hydrochloric acid after absorption is transferred to salt acid storage tank 5.Hydrochloric acid after absorption be in salt acid storage tank 5 HCl concentration about 20%-22%'s
Hydrochloric acid solution, because the HCl gases of absorption contain a small amount of vapor, vapor can carry a small amount of NaCl, that is, the salt after absorbing
Acid can contain a small amount of NaCl.
Herein what deserves to be explained is, prepared by the crystal seed of titanium dioxide need to use substantial amounts of hydrochloric acid, it is desirable to which HCl concentration is in 25%-
31%.And in titanium dioxide seed crystal production process, first step alkali soluble can remain substantial amounts of liquid caustic soda, can have a small amount of liquid after washing
Alkali, can produce the higher NaCl of concentration, that is to say, that the hydrochloric acid after absorption contains a small amount of NaCl not with hydrochloric acid reaction when sour molten
Influence the preparation of crystal seed.The present embodiment prepares titanium dioxide crystal seed using agricultural chemicals waste hydrochloric acid, and agricultural chemicals waste hydrochloric acid can be with relatively low valency
Lattice are obtained even without any cost from pesticide producing producer, but because the abraum salt acid concentration of recovery is not enough, and containing a certain amount of
NaCl, it is impossible to directly use, in addition it is also necessary to by further processing, improve abraum salt acid concentration, reduce NaCl contents, be applicable it
In the preparation of titanium dioxide crystal seed.
Described salt acid storage tank 5 is connected with hydrochloric acid make-up tank 6, is provided between salt acid storage tank 5 and hydrochloric acid make-up tank 6
Pump, hydrochloric acid make-up tank 6 is gone to by pump by the low-concentration hcl in salt acid storage tank 5.Hydrochloric acid make-up tank 6 is stored up with technical hydrochloric acid simultaneously
Groove 7 is connected, and pump is also equipped between hydrochloric acid make-up tank 6 and technical hydrochloric acid storage tank 7, by pump by the work in technical hydrochloric acid storage tank 7
Industry hydrochloric acid goes to hydrochloric acid make-up tank 6, and the inside of hydrochloric acid make-up tank 6 is provided with agitator, the salt of concentration is prepared for preparing suitable crystal seed
Crystal seed is according to 1 with technical hydrochloric acid with the hydrochloric acid after concentration with hydrochloric acid in acid, the present embodiment:1-2:1 ratio mixed configuration.
The lower end of hydrochloric acid make-up tank 6 is connected with crystal seed salt acid storage tank 8, and hydrochloric acid make-up tank 6 and crystal seed are between salt acid storage tank 8
Pump is provided with, it is standby that the suitable concentration hydrochloric acid prepared goes to crystal seed salt acid storage tank 8, so far crystal seed hydrochloric acid configuration is finished.
Abraum salt acid storage tank 1, evaporator 2, gas-liquid separator 3, absorption tower 4, salt acid storage tank 5, hydrochloric acid make-up tank 6, industry in the present embodiment
Its inner materials selects graphite with salt acid storage tank 8 for salt acid storage tank 7 and crystal seed, prevents corrosion.
According to the conveying direction of material, described metatitanic acid storage tank 13, metatitanic acid measuring tank 14, alkali soluble pot 15, alkali soluble pressure
Filter 16, alkali soluble pulping tank 17, sour molten pot 10, sour molten filter press 11, sour molten pulping tank 12 are sequentially connected, crystal seed salt acid storage tank
8 are connected through crystal seed with hydrochloric acid measuring tank 9 with sour molten pot 10.There is steam pipe to be heated up for steam in alkali soluble pot 15, and alkali soluble pot 15
Jacketed, can steam heating or sand leaching water cooling, and equipped with stirring.Crystal seed hydrochloric acid measuring tank 9 and the inside material of sour molten pot 10
Matter also uses graphite, and sour molten pot 10 is with stirring.The metatitanic acid prepared is gone to metatitanic acid measuring tank 14 by metatitanic acid storage tank 13,
Metatitanic acid is at the appointed time transferred to alkali soluble pot 15 in section by metatitanic acid measuring tank 14 according to actual needs, and alkali soluble pot 15 is complete by alkali soluble
Slurry after is transferred to alkali soluble filter press 16.The blanking of alkali soluble filter press 16 is to alkali soluble pulping tank 17, and alkali soluble pulping tank 17 is by slurry
Sour molten pot 10 is gone to, while watery hydrochloric acid is added sour molten pot 10 by crystal seed with hydrochloric acid measuring tank 9；The molten pot 10 of acid is again by the slurry prepared
Material goes to sour molten filter press 11, the sour molten blanking of filter press 11, the slurrying in sour molten pulping tank 12, you can obtain crystal seeds of rutile.
The production system provided using the present embodiment, use agricultural chemicals waste hydrochloric acid prepare the detailed process of titanium dioxide crystal seed for：
Step 1: opening evaporator 2, the control negative pressure of evaporator 2 is in the range of 370-380Kpa.
Step 2: opening the transfering material pump of abraum salt acid storage tank 1, waste hydrochloric acid is supplied to evaporator 2.
Step 3: after 5min, evaporator 2 starts the mixed gas for HCl and vapor to gas-liquid separator 3；Evaporator 2
Bottom has a small amount of watery hydrochloric acid containing HCl to be expelled to abraum salt acid storage tank 1.
Step 4: evaporator 2 is given after the steam supply of gas-liquid separator 3, gas-liquid separator 3 after absorption tower 4, steam supply 10min is opened
Liquid is separated out, and goes to abraum salt acid storage tank 1, and gas-liquid separator 3 is to after the steam supply 30min of absorption tower 4, after absorption tower 4 is absorbed
Concentrating hydrochloric acid goes to salt acid storage tank 5.
Step 5: hydrochloric acid volume reaches 50m in salt acid storage tank 53Turn 30m later3To hydrochloric acid make-up tank 6；Afterwards again from Nacl
7 turns of 55m of acid storage tank3Technical hydrochloric acid stirs 10min, surveys its concentration to hydrochloric acid make-up tank 6；Concentration is gone to after reaching 27.5%
Crystal seed is standby with salt acid storage tank 8.
Step 6: being 7.5m by the volume prepared3Metatitanic acid go to metatitanic acid measuring tank 14 from metatitanic acid storage tank 13,
It is warming up to 76 DEG C.
Step 7: alkali soluble pot 15 adds 5.2m3Mass percent is 49% liquid caustic soda, is warming up to 90 DEG C.
Step 8: the metatitanic acid being had warmed up in metatitanic acid measuring tank 14 is transferred into alkali soluble 15 (jacketeds) of pot, temperature in 30min
Degree rises to 108 DEG C, is aged 2h.
Step 9: interior add of alkali soluble pot 15 reduces with the isometric desalted water of metatitanic acid, temperature, sand leaching water is added in chuck,
Slurry is cooled to 68 DEG C.
Step 10: the slurry after the completion of alkali soluble in alkali soluble pot 15 is transferred into alkali soluble filter press 16, wash, until surveying in filtrate
NaOH content is 3.5g/L, and filtrate is transferred to filtrate receiver.
Step 11: blanking is to alkali soluble pulping tank 17, the mass ratio of the reclaimed water of alkali soluble pulping tank 17 and slurry is 7:1, stirring
30min。
Step 12: the slurry of alkali soluble pulping tank 17 is turned into 15m3To sour molten pot 10, added from crystal seed with hydrochloric acid measuring tank 9
1.2m3Watery hydrochloric acid to sour molten pot 10, regulation pH is 3.0, after stirring 10min again plus watery hydrochloric acid 0.1m3, it is 2.9 to survey pH, heating
To 48 DEG C.
Step 13: the slurry to sour molten pot 10 is warming up to 60 DEG C, hydrochloric acid, about 1.9m are added again3, it is 0.9 to adjust pH；Beat
Open steam valve and be continuously heating to 107 DEG C of boilings, 1 DEG C/min of programming rate is aged 120 minutes.
Step 14: it is that 99.2%, total titanium concentration is 116g/L to survey conversion ratio R.
Step 15: the slurry that sour molten pot 10 is prepared goes to sour molten filter press 11, washing, until NaCl contains in filtrate
Measure as 0.6g/L.
Step 16: the sour blanking of molten filter press 11, the slurrying in sour molten pulping tank 12, total titanium concentration is 115g/L, you can
Obtain titanium dioxide crystal seeds of rutile.
The crystal seeds of rutile that the present embodiment slurrying is obtained is, by deionization, can be applied directly to salt treatment process, is saved
Go crystal seed in traditional handicraft to be added to the energy consumption that hydrolyzing process need to be produced by follow-up multistage manufacturing, reduce cost.Obtain
Titanium dioxide crystal seeds of rutile is 4%-7% in the addition of salt treatment process.
Embodiment 2
A kind of use agricultural chemicals waste hydrochloric acid of the present embodiment prepares the production system of titanium dioxide crystal seed, basic be the same as Example 1, sheet
Embodiment use agricultural chemicals waste hydrochloric acid prepare the detailed process of titanium dioxide crystal seed for：
Step 1: abraum salt acid storage tank 1 supplies waste hydrochloric acid by transfering material pump to evaporator 2, the negative pressure of evaporator 2 is in 350-360KPa
Between fluctuate.
Step 2: evaporator 2 gives mixed gas of the gas-liquid separator 3 for HCl and vapor；The bottom of evaporator 2 has on a small quantity
Watery hydrochloric acid containing HCl is expelled to abraum salt acid storage tank 1.
Step 3: opening absorption tower 4 after the steam supply of gas-liquid separator 3, the liquid of gas-liquid separator 3 is separated out, and goes to waste hydrochloric acid
Storage tank 1, gas-liquid separator 3 is to absorption tower steam supply, and the concentrating hydrochloric acid after absorption tower 4 is absorbed goes to salt acid storage tank 5.
Step 4: hydrochloric acid volume reaches 50m in salt acid storage tank 53Turn 30m later3To hydrochloric acid make-up tank 6；Afterwards again from Nacl
7 turns of 58m of acid storage tank3Technical hydrochloric acid stirs 10min, surveys its concentration to hydrochloric acid make-up tank 6；Concentration goes to crystalline substance after reaching 28%
Plant standby with salt acid storage tank 8.
Step 5: by the 7.5m prepared3Metatitanic acid goes to metatitanic acid measuring tank 14 from metatitanic acid storage tank 13, is warming up to 76
℃。
Step 6: alkali soluble pot 15 plus 5.2m3Mass percent is 49% liquid caustic soda, is warming up to 90 DEG C.
Step 7: the metatitanic acid being had warmed up in metatitanic acid measuring tank 14 is transferred into alkali soluble 15 (jacketeds) of pot, temperature in 30min
Degree rises to 108 DEG C, is aged 2h.
Step 8: interior add of alkali soluble pot 15 reduces with the isometric desalted water of metatitanic acid, temperature, sand leaching water is added in chuck,
Slurry is cooled to 65 DEG C.
Step 9: the slurry after the completion of alkali soluble in alkali soluble pot 15 is transferred into alkali soluble filter press 16, wash, until surveying in filtrate
NaOH content is 2.3g/L, and filtrate is transferred to filtrate receiver.
Step 10: blanking is to alkali soluble pulping tank 17, the mass ratio of the reclaimed water of alkali soluble pulping tank 17 and slurry is 7:1, stirring
30min。
Step 11: the slurry of alkali soluble pulping tank 17 is turned into 15m3To sour molten pot 10, added from crystal seed with hydrochloric acid measuring tank 9
1.3m3Watery hydrochloric acid to sour molten pot 10, regulation pH is 2.5, and it is 2.8 to survey pH again after stirring 10min, is warming up to 46 DEG C.
Step 12: the slurry to sour molten pot 10 is warming up to 60 DEG C, hydrochloric acid 2.0m is added again3, it is 0.7 to adjust pH；Open and steam
Steam valve door is continuously heating to 106 DEG C of boilings, and 1 DEG C/min of programming rate is aged 120 minutes.
Step 13: it is that 99.5%, total titanium concentration is 115g/L to survey conversion ratio R.
Step 14: the slurry that sour molten pot 10 is prepared goes to sour molten filter press 11, washing, until NaCl contains in filtrate
Measure as 0.4g/L.
Step 15: the sour blanking of molten filter press 11, the slurrying in sour molten pulping tank 12, total titanium concentration is 116g/L, you can
Obtain titanium dioxide crystal seeds of rutile.
Embodiment 3
A kind of use agricultural chemicals waste hydrochloric acid of the present embodiment prepares the production system of titanium dioxide crystal seed, basic be the same as Example 1, sheet
Embodiment use agricultural chemicals waste hydrochloric acid prepare the detailed process of titanium dioxide crystal seed for：
Step 1: abraum salt acid storage tank 1 supplies waste hydrochloric acid by transfering material pump to evaporator 2, the negative pressure of evaporator 2 is in 300-400KPa
Between fluctuate.
Step 2: evaporator 2 gives mixed gas of the gas-liquid separator 3 for HCl and vapor；The bottom of evaporator 2 has on a small quantity
Watery hydrochloric acid containing HCl is expelled to abraum salt acid storage tank 1.
Step 3: opening absorption tower 4 after the steam supply of gas-liquid separator 3, the liquid of gas-liquid separator 3 is separated out, and goes to waste hydrochloric acid
Storage tank 1, gas-liquid separator 3 is to absorption tower steam supply, and the concentrating hydrochloric acid after absorption tower 4 is absorbed goes to salt acid storage tank 5.
Step 4: hydrochloric acid volume reaches 50m in salt acid storage tank 53Turn 30m later3To hydrochloric acid make-up tank 6；Afterwards again from Nacl
7 turns of 30m of acid storage tank3Technical hydrochloric acid stirs 10min, surveys its concentration to hydrochloric acid make-up tank 6；Concentration goes to crystalline substance after reaching 25%
Plant standby with salt acid storage tank 8.
Step 5: by the 7.5m prepared3Metatitanic acid goes to metatitanic acid measuring tank 14 from metatitanic acid storage tank 13, is warming up to 80
℃。
Step 6: alkali soluble pot 15 plus 5.2m3Mass percent is 49% liquid caustic soda, is warming up to 95 DEG C.
Step 7: the metatitanic acid being had warmed up in metatitanic acid measuring tank 14 is transferred into alkali soluble 15 (jacketeds) of pot, temperature in 30min
Degree rises to 108 DEG C, is aged 2h.
Step 8: interior add of alkali soluble pot 15 reduces with the isometric desalted water of metatitanic acid, temperature, sand leaching water is added in chuck,
Slurry is cooled to 60 DEG C.
Step 9: the slurry after the completion of alkali soluble in alkali soluble pot 15 is transferred into alkali soluble filter press 16, wash, until surveying in filtrate
NaOH content is 2.8g/L, and filtrate is transferred to filtrate receiver.
Step 10: blanking is to alkali soluble pulping tank 17, the mass ratio of the reclaimed water of alkali soluble pulping tank 17 and slurry is 7:1, stirring
30min。
Step 11: the slurry of alkali soluble pulping tank 17 is turned into 15m3To sour molten pot 10, added from crystal seed with hydrochloric acid measuring tank 9
1.3m3Watery hydrochloric acid to sour molten pot 10, regulation pH is 2.5, and it is 2.8 to survey pH again after stirring 10min, is warming up to 46 DEG C.
Step 12: the slurry to sour molten pot 10 is warming up to 65 DEG C, hydrochloric acid 1.2m is added again3, it is 1.0 to adjust pH；Open and steam
Steam valve door is continuously heating to 110 DEG C of boilings, and 1 DEG C/min of programming rate is aged 120 minutes.
Step 13: it is that 98.7%, total titanium concentration is 110g/L to survey conversion ratio R.
Step 14: the slurry that sour molten pot 10 is prepared goes to sour molten filter press 11, washing, until NaCl contains in filtrate
Measure as 0.2g/L.
Step 15: the sour blanking of molten filter press 11, the slurrying in sour molten pulping tank 12, total titanium concentration is 113g/L, you can
Obtain titanium dioxide crystal seeds of rutile.
Embodiment 4
A kind of use agricultural chemicals waste hydrochloric acid of the present embodiment prepares the production system of titanium dioxide crystal seed, basic be the same as Example 1, sheet
Embodiment use agricultural chemicals waste hydrochloric acid prepare the detailed process of titanium dioxide crystal seed for：
Step 1: abraum salt acid storage tank 1 supplies waste hydrochloric acid by transfering material pump to evaporator 2, the negative pressure of evaporator 2 is in 320-350KPa
Between fluctuate.
Step 2: evaporator 2 gives mixed gas of the gas-liquid separator 3 for HCl and vapor；The bottom of evaporator 2 has on a small quantity
Watery hydrochloric acid containing HCl is expelled to abraum salt acid storage tank 1.
Step 3: opening absorption tower 4 after the steam supply of gas-liquid separator 3, the liquid of gas-liquid separator 3 is separated out, and goes to waste hydrochloric acid
Storage tank 1, gas-liquid separator 3 is to absorption tower steam supply, and the concentrating hydrochloric acid after absorption tower 4 is absorbed goes to salt acid storage tank 5.
Step 4: hydrochloric acid volume reaches 50m in salt acid storage tank 53Turn 30m later3To hydrochloric acid make-up tank 6；Afterwards again from Nacl
7 turns of 60m of acid storage tank3Technical hydrochloric acid stirs 10min, surveys its concentration to hydrochloric acid make-up tank 6；Concentration goes to crystalline substance after reaching 31%
Plant standby with salt acid storage tank 8.
Step 5: by the 7.5m prepared3Metatitanic acid goes to metatitanic acid measuring tank 14 from metatitanic acid storage tank 13, is warming up to 60
℃。
Step 6: alkali soluble pot 15 plus 5.2m3Mass percent is 49% liquid caustic soda, is warming up to 75 DEG C.
Step 7: the metatitanic acid being had warmed up in metatitanic acid measuring tank 14 is transferred into alkali soluble 15 (jacketeds) of pot, temperature in 30min
Degree rises to 108 DEG C, is aged 2h.
Step 8: interior add of alkali soluble pot 15 reduces with the isometric desalted water of metatitanic acid, temperature, sand leaching water is added in chuck,
Slurry is cooled to 70 DEG C.
Step 9: the slurry after the completion of alkali soluble in alkali soluble pot 15 is transferred into alkali soluble filter press 16, wash, until surveying in filtrate
NaOH content is 3.8g/L, and filtrate is transferred to filtrate receiver.
Step 10: blanking is to alkali soluble pulping tank 17, the mass ratio of the reclaimed water of alkali soluble pulping tank 17 and slurry is 7:1, stirring
30min。
Step 11: the slurry of alkali soluble pulping tank 17 is turned into 15m3To sour molten pot 10, added from crystal seed with hydrochloric acid measuring tank 9
1.3m3Watery hydrochloric acid to sour molten pot 10, regulation pH is 2.5, and it is 2.8 to survey pH again after stirring 10min, is warming up to 46 DEG C.
Step 12: the slurry to sour molten pot 10 is warming up to 60 DEG C, hydrochloric acid is added to adjust pH to be 0.6 again；Open steam valve
100 DEG C of boilings are continuously heating to, 1 DEG C/min of programming rate is aged 120 minutes.
Step 13: it is that 99.1%, total titanium concentration is 114g/L to survey conversion ratio R.
Step 14: the slurry that sour molten pot 10 is prepared goes to sour molten filter press 11, washing, until NaCl contains in filtrate
Measure as 0.2g/L.
Step 15: the sour blanking of molten filter press 11, the slurrying in sour molten pulping tank 12, total titanium concentration is 115g/L, you can
Obtain titanium dioxide crystal seeds of rutile.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of use agricultural chemicals waste hydrochloric acid prepares the production system of titanium dioxide crystal seed, it is characterised in that：Concentrated including waste hydrochloric acid single
Member, crystal seed hydrochloric acid dispensing unit and titanium dioxide crystal seed preparation unit, described waste hydrochloric acid upgrading unit are matched somebody with somebody with crystal seed with hydrochloric acid
Put unit to be connected, waste hydrochloric acid upgrading unit inputs crystal seed hydrochloric acid dispensing unit after agricultural chemicals waste hydrochloric acid is purified, absorbed, brilliant
Plant and be connected with the output channel of hydrochloric acid dispensing unit with the sour molten pot (10) of titanium dioxide crystal seed preparation unit, crystal seed is configured with hydrochloric acid
The hydrochloric acid that unit configuration is completed is inputted in sour molten pot (10).
2. a kind of use agricultural chemicals waste hydrochloric acid according to claim 1 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Described waste hydrochloric acid upgrading unit include abraum salt acid storage tank (1), evaporator (2), gas-liquid separator (3), absorption tower (4) and
Salt acid storage tank (5), abraum salt acid storage tank (1) is connected with evaporator (2), is connected at the top of evaporator (2) with gas-liquid separator (3), gas
Liquid/gas separator (3) top is connected with absorption tower (4), and absorption tower (4) bottom is connected with salt acid storage tank (5).
3. a kind of use agricultural chemicals waste hydrochloric acid according to claim 2 prepares the production system of titanium dioxide crystal seed, its feature exists
In：The horizontal level of evaporator (2) is higher than abraum salt acid storage tank (1), and evaporator (2) bottom is connected with pipeline to abraum salt acid storage tank
(1)；Gas-liquid separator (3) bottom is also connected with pipeline to abraum salt acid storage tank (1).
4. a kind of use agricultural chemicals waste hydrochloric acid according to claim 2 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Absorption tower (4) is connected by pipeline with deionized water storage tank (18).
5. a kind of use agricultural chemicals waste hydrochloric acid according to claim any one of 2-4 prepares the production system of titanium dioxide crystal seed,
It is characterized in that：Described crystal seed hydrochloric acid dispensing unit includes hydrochloric acid make-up tank (6), technical hydrochloric acid storage tank (7) and crystal seed and used
Salt acid storage tank (8), salt acid storage tank (5) is connected with hydrochloric acid make-up tank (6), technical hydrochloric acid storage tank (7) also with hydrochloric acid make-up tank (6) phase
Even, hydrochloric acid make-up tank (6) lower end is connected with crystal seed with salt acid storage tank (8).
6. a kind of use agricultural chemicals waste hydrochloric acid according to claim 5 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Between described salt acid storage tank (5) and hydrochloric acid make-up tank (6), between hydrochloric acid make-up tank (6) and technical hydrochloric acid storage tank (7), salt
Sour make-up tank (6) and crystal seed are provided with transfering material pump between salt acid storage tank (8).
7. a kind of use agricultural chemicals waste hydrochloric acid according to claim 5 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Described titanium dioxide crystal seed preparation unit includes sour molten pot (10), sour molten filter press (11), sour molten pulping tank (12), inclined titanium
Acid storage tank (13), metatitanic acid measuring tank (14), alkali soluble pot (15), alkali soluble filter press (16), alkali soluble pulping tank (17)；According to material
Conveying direction, metatitanic acid storage tank (13), metatitanic acid measuring tank (14), alkali soluble pot (15), alkali soluble filter press (16), alkali soluble slurrying
Groove (17), sour molten pot (10), sour molten filter press (11), sour molten pulping tank (12) are sequentially connected, crystal seed salt acid storage tank (8) and acid
Molten pot (10) is connected.
8. a kind of use agricultural chemicals waste hydrochloric acid according to claim 7 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Described crystal seed between salt acid storage tank (8) and sour molten pot (10) be provided with crystal seed hydrochloric acid measuring tank (9).
9. a kind of use agricultural chemicals waste hydrochloric acid according to claim 8 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Steam pipe is provided with described alkali soluble pot (15), and with chuck.
10. a kind of use agricultural chemicals waste hydrochloric acid according to claim 9 prepares the production system of titanium dioxide crystal seed, its feature exists
In：Described abraum salt acid storage tank (1), evaporator (2), gas-liquid separator (3), absorption tower (4), salt acid storage tank (5), hydrochloric acid are prepared
The internal material of groove (6), technical hydrochloric acid storage tank (7), crystal seed salt acid storage tank (8), crystal seed hydrochloric acid measuring tank (9) and sour molten pot (10)
Matter uses graphite.
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| CN112850782A (en) * | 2021-02-22 | 2021-05-28 | 安徽英特力工业工程技术有限公司 | Preparation system of raw materials seed crystal for inorganic chemical pigment production |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040161380A1 (en) * | 2003-02-19 | 2004-08-19 | Degussa Ag | Titanium dioxide particles, their preparation and use |
| CN101311120A (en) * | 2008-05-05 | 2008-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of rutile type calcining seeds with high activity and high stability |
| CN202193614U (en) * | 2011-08-08 | 2012-04-18 | 常州化工设备有限公司 | Processing equipment for concentrating and recycling hydrochloric acid |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040161380A1 (en) * | 2003-02-19 | 2004-08-19 | Degussa Ag | Titanium dioxide particles, their preparation and use |
| CN101311120A (en) * | 2008-05-05 | 2008-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of rutile type calcining seeds with high activity and high stability |
| CN202193614U (en) * | 2011-08-08 | 2012-04-18 | 常州化工设备有限公司 | Processing equipment for concentrating and recycling hydrochloric acid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850782A (en) * | 2021-02-22 | 2021-05-28 | 安徽英特力工业工程技术有限公司 | Preparation system of raw materials seed crystal for inorganic chemical pigment production |
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Effective date of registration: 20200622 Address after: Room 501, high tech Industrial Park, Nanhuan Road, Baiyin City, Gansu Province, 730900 Patentee after: Gansu Dongfang Titanium Industry Co., Ltd Address before: 243051 Xinhua road Anhui city Ma'anshan province Cihu hi tech Industrial Development Zone No. 1 Patentee before: ANHUI VENUS TITANIUM DIOXIDE (GROUP) Co.,Ltd. |