CN109650462A - A kind of system and method for titanium liquid pumping compression separation ferrous sulfate - Google Patents
A kind of system and method for titanium liquid pumping compression separation ferrous sulfate Download PDFInfo
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- CN109650462A CN109650462A CN201910010749.7A CN201910010749A CN109650462A CN 109650462 A CN109650462 A CN 109650462A CN 201910010749 A CN201910010749 A CN 201910010749A CN 109650462 A CN109650462 A CN 109650462A
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- titanium
- compressor
- ferrous sulfate
- titanium liquid
- cooling
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000010936 titanium Substances 0.000 title claims abstract description 96
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 96
- 239000007788 liquid Substances 0.000 title claims abstract description 91
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 title claims abstract description 37
- 239000011790 ferrous sulphate Substances 0.000 title claims abstract description 36
- 235000003891 ferrous sulphate Nutrition 0.000 title claims abstract description 36
- 229910000359 iron(II) sulfate Inorganic materials 0.000 title claims abstract description 36
- 230000006835 compression Effects 0.000 title claims abstract description 24
- 238000007906 compression Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 238000005086 pumping Methods 0.000 title claims description 22
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 239000007921 spray Substances 0.000 claims abstract description 38
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 239000013078 crystal Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 230000008676 import Effects 0.000 claims description 14
- 238000007701 flash-distillation Methods 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 11
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000010865 sewage Substances 0.000 abstract description 5
- 231100000241 scar Toxicity 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 13
- 235000010215 titanium dioxide Nutrition 0.000 description 9
- 238000010793 Steam injection (oil industry) Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000004408 titanium dioxide Substances 0.000 description 4
- 238000005580 one pot reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/14—Sulfates
-
- 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
- C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to the system and methods that a kind of titanium liquid is evacuated compression separation ferrous sulfate, and system is by titanium flow container, gas-liquid separator, compressor, direct contact condenser, vacuum pump, cooling tower, cooling tower pump, spray pump, fluid-tight pond, side blender composition.The air-extractor that system uses big flow compressor to cool down as titanium liquid vacuum flashing, dividing wall type cooling wall is not present in temperature-fall period in titanium flow container, without local overcooling phenomenon inside titanium liquid, there is no ferrous sulfate to form the brilliant dirty problem of brilliant scar on dividing wall type cooling wall；For system using electric power as drive energy, cooling load is only the heat of condensation heat release and the transformation of compressor wasted work of secondary steam.Compared with the cooling of traditional titanium liquid separates ferrous sulfate system, the present invention has the characteristics that operation energy consumption is low, rapid, the cooling load of cooling is small, high production efficiency, labor intensity is small, crystal size is uniform, does not generate secondary sewage.
Description
Technical field
The present invention relates to a kind of pumping compressibility more particularly to a kind of pumping compressions that ferrous sulfate is separated from titanium liquid
Formula system and method.
Background technique
China is titanium white production big country, and for the titanium white yield in China in 2017 up to 3,780,000 tons, annual output occupies world head
Position.Titanium white production is a highly energy-consuming process, energy-saving to have become titanium dioxide with becoming increasingly conspicuous for energy-saving and emission-reduction problem
Manufacturing enterprise pays close attention to problem.In the Production By Sulfuric Acid Process technique of titanium dioxide, need in black liquor process section through cooling knot
Brilliant mode separates the ferrous sulfate in solution from titanium liquid.
Currently, titanium liquid cooling separation ferrous sulfate mainly uses steam injection flash distillation cooling or two kinds of cooling sides of chilled brine
Method.Wherein, steam injection flash distillation falling temperature method is to be aspirated using the raw steam drive of high pressure by the Venturi effect of steam jet pump
Secondary steam in titanium flow container flash of steam and is absorbed heat from solution itself under the moisture lower pressure in titanium liquid, to realize pair
The cooling of titanium liquid and the Crystallization Separation of ferrous sulfate.Steam injection flash distillation cool-down method there are energy-output ratios big, the energy of titanium liquid
The low problem of source utilization efficiency.Under normal conditions, energy efficiency of the steam jet pump under for vacuumized conditions is only 20%
~30%, i.e. steam jet pump moisture that 1t is often pumped out from titanium liquid at least need the raw steam conduct of the high pressure of mating 3~5t
The drive energy of jet pump, while the negative pressure steam exhaust of 4~6t is generated, steam exhaust condensation process also needs additionally to consume a large amount of cooling
Water resource.In addition, increasingly serious with environmental issue, the application of coal-burning steam boiler is restricted, the valence of raw steam
Lattice, which go up and put on short allowance, has become the major obstacle of titanium white production enterprise expansion production capacity, reduction product energy consumption cost.
The chilled brine falling temperature method of titanium liquid be low temperature chilled water or chilled brine are passed through to the external jacket of titanium liquid storage tank or
In built-in coil pipe, realized by circulating chilled water to the cooling of titanium liquid and the Crystallization Separation of ferrous sulfate.In the method, sulfuric acid is sub-
Iron can be crystallized quickly at cooling wall (jackets inner wall or coil pipe outer wall) and be precipitated and constantly accumulate, and form the extremely strong brilliant dirt of adhesive force
Layer, brilliant dirt layer increase the heat transfer resistance of process, cause titanium liquid rate of temperature fall slower and slower；Simultaneously brilliant dirty layer also need periodically into
Row manual cleaning.Therefore, the chilled brine falling temperature method of titanium liquid is long in the presence of the cooling period, production efficiency is low, field labor intensity is big
The problems such as.
Summary of the invention
The purpose of the present invention is aiming at the shortcomings of the prior art, provide a kind of titanium liquid pumping compression separation sulphur
Sour ferrous system and method.
A kind of system of titanium liquid pumping compression separation ferrous sulfate, it is characterised in that: including titanium flow container, gas-liquid separator,
Compressor, direct contact condenser, vacuum pump, cooling tower, cooling tower pump, spray pump, fluid-tight pond, side blender.
It is equipped with secondary steam at the top of the titanium flow container to export, side wall is equipped with feed inlet, and bottom is equipped with discharge gate；The gas-liquid
Separator is equipped with air intake and venthole；Fixed gas gas outlet is equipped at the top of the contact condenser, side wall is equipped with secondary steam
Import and spray water inlet, bottom are equipped with spray water out；The cooling tower uses closed cooling tower, and side wall is respectively equipped with spray
Water inlet, spray water out and cooling circulating water inlet, bottom are equipped with cooling circulating water outlet.
The secondary steam outlet of the titanium flow container is connected with the air intake of the gas-liquid separator, and gas-liquid separator goes out vapour
Mouth is connected with the air entry of the compressor, the secondary steam import phase of the exhaust outlet of compressor and the direct contact condenser
Even, the spray water out of direct contact condenser is by piping connection to fluid-tight pond, and the outlet of connecting tube is immersed in fluid-tight
Below the liquid level in pond；The spray water out of direct contact condenser and the difference in height in fluid-tight pond are not less than 10 meters；The spray
The import of pump is connected with fluid-tight pond, and the outlet of spray pump is connected with the spray water inlet of the cooling tower, and in this connecting tube
Install discharge outlet in road；The spray water out of cooling tower is connected with the spray water inlet of the direct contact condenser；Cooling tower bottom
The cooling circulating water outlet in portion is connected with the import that the cooling tower pumps, the outlet of cooling tower pump and the cooling circulating water of cooling tower
Import is connected；The fixed gas gas outlet of direct contact condenser is connected with the air inlet of the vacuum pump；The side blender installation
In the side wall of titanium flow container.
More preferably:
Compressor used by system be Roots Compressor, screw compressor or piston compressor, compressor into
Row frequency conversion control.
Gas-liquid separator used by system be baffle plate combined with wire mesh demister there is two-stage foam removal function
High efficient gas and liquid separator.
Vacuum pump used by system is water-ring vacuum pump.
A kind of working method of the system of titanium liquid pumping compression separation ferrous sulfate: when system is run, compressor suction titanium
Secondary steam in flow container, titanium flow container internal pressure constantly reduce, when pressure reduction to the corresponding saturated vapor pressure of titanium liquid temperature
When power, the moisture in titanium liquid begins vaporization flash distillation simultaneously, and titanium liquid temperature starts to reduce, when temperature is reduced to the crystallization of ferrous sulfate to face
When boundary's temperature, ferrous sulfate starts to crystallize and be constantly precipitated from titanium liquid.The flash distillation of titanium liquid is formed by secondary steam through gas-liquid point
After separating after device, the acid solution drop of secondary steam entrainment is intercepted and flows back into titanium flow container；Secondary steam enters compression later
Machine is heated pressurization, and the secondary steam after compression heating enters direct contact condenser and to carry out contact with spraying cooling water cold
It is solidifying；Lime set falls into fluid-tight pond together with spraying cooling water；Incoagulable gas in system is by vacuum pump discharge system.
Compared with prior art, the beneficial effects of the present invention are:
(1) system of titanium liquid of the invention pumping compression separation ferrous sulfate carries out titanium liquid using mechanical flash distillation mode
Fast cooling, is not present dividing wall type cooling wall in temperature-fall period in titanium flow container, without local overcooling phenomenon inside titanium liquid, be not present
Ferrous sulfate forms the problem of the brilliant dirt of brilliant scar on dividing wall type cooling wall, the high production efficiency of system, and labor intensity is small.
(2) compared with conventional vapor sprays flash distillation falling temperature method, drive energy of the present invention using electric power as system, no fire coal
The environmental protection pressure puzzlement that steam boiler uses.The cooling load of system is only that the condensation heat release of secondary steam and compressor wasted work turn
The cooling load of the heat of change, system is small, not because of secondarily polluted water problem caused by using raw steam, reduces at sewage
Manage cost.
(3) control condition of optimization is given for titanium liquid system the application, under the conditions of identical titanium dioxide capacity, the present invention
Titanium liquid pumping compression separation ferrous sulfate system operating cost compared with conventional vapor spray flash distillation falling temperature method can reduce by 60%
~70%, economic benefit is very significant.In addition, the compressor of present system therefore can be according to titanium using variable-frequency control technique
The iron titanium ratio content situation of liquid accurately controls the rate of temperature fall of feed liquid, to guarantee the rapid crystallization and crystal of ferrous sulfate
Epigranular.
Detailed description of the invention
Fig. 1 is a kind of titanium liquid pumping compression separation ferrous sulfate systematic schematic diagram of the invention
Fig. 2 is the structural schematic diagram of the gas-liquid separator of embodiment one
In figure, 1 is titanium flow container, and 2 be gas-liquid separator, and 3 be compressor, and 4 be direct contact condenser, and 5 be vacuum pump, and 6 are
Cooling tower, 7 pump for cooling tower, and 8 be spray pump, and 9 be fluid-tight pond, and 10 be side blender.
Specific embodiment
The present invention is described in further details in the following with reference to the drawings and specific embodiments, example is served only for explaining this
Invention, is not intended to limit the scope of the present invention.
Embodiment one:
As shown in Figure 1, a kind of system of titanium liquid pumping compression separation ferrous sulfate: including titanium flow container 1, gas-liquid separator 2,
Compressor 3, direct contact condenser 4, vacuum pump 5, cooling tower 6, cooling tower pump 7, spray pump 8, fluid-tight pond 9, side blender 10.
The volume of the titanium flow container 1 is 56m3, it is made by carbon steel liner rubber；Secondary steam is equipped at the top of titanium flow container
Outlet, aperture DN800, titanium flow container side wall are equipped with feed inlet, and bottom is equipped with discharge gate；The side blender 10 is mounted on titanium liquid
The downside wall of tank, stirring motor power are 15kW.The gas-liquid separator 2 is equipped with air intake and venthole, and bore is
DN800, as shown in Fig. 2, the two-stage foam removal formula structure combined inside gas-liquid separator 2 using hydraulic barrier and SP type silk screen.
The compressor 3 uses LC20000 type Roots Compressor, and the specified extraction flow of power frequency is 20000L/s, and compressor is matched
Set driving motor power is 280kW, and carries out frequency conversion drive operation, and the air entry of compressor and the diameter of exhaust outlet are
DN800.The contact condenser 4 is cylinder-like structure, and material 316L, contact condenser internal diameter is DN1500, and top is set
There is fixed gas gas outlet, side wall is equipped with secondary steam import and spray water inlet, and bottom is equipped with spray water out；The cooling tower
6 use closed cooling tower, and side wall is respectively equipped with spray water inlet, spray water out and cooling circulating water inlet, and bottom is equipped with cold
But circulating water outlet, the radiator fan power of cooling tower are 15kW.The spray pump 8 uses centrifugal pump, and metered flow is
400m3/ h, lift 30m, power 75kW.The cooling tower pump 7 uses centrifugal pump, metered flow 400m3/ h, lift are
20m, power 45kW.The vacuum pump 5 uses water-ring vacuum pump, and specified sucking rate is 1200m3/ h, power of motor are
37kW.The spray water out of the direct contact condenser and the difference in height in fluid-tight pond 9 are 11 meters.
Titanium flow container 1 secondary steam outlet is connected with the air intake of gas-liquid separator 2, the venthole of gas-liquid separator 2 and
The air entry of the compressor 3 is connected, and the exhaust outlet of compressor 3 is connected with the secondary steam import of the direct contact condenser 4,
The outlet of connecting tube is immersed in fluid-tight water by piping connection to fluid-tight pond 9 by the spray water out of direct contact condenser 4
Below the liquid level in pond；The import of the spray pump 8 is connected with fluid-tight pond 9, the outlet and the spray of the cooling tower 6 of spray pump 8
Water drenching import is connected, and installs discharge outlet on this connecting line；The spray water out and the direct contact condenser of cooling tower 6
4 spray water inlet is connected；The cooling circulating water outlet of 6 bottom of cooling tower is connected with the import of cooling tower pump 7, cooling tower
The outlet of pump 7 is connected with the cooling circulating water inlet of cooling tower；The fixed gas gas outlet of direct contact condenser 4 and the vacuum pump
5 air inlet is connected.
The working principle of the present embodiment is as follows: titanium flow container into titanium liquid measure be 30~36m3(one-pot titanium white amount about 4.3t),
Feed liquid temperature is 55 DEG C~65 DEG C, and when system is run, compressor highest is with 20m3Secondary steaming in the speed suction titanium flow container of/s
Vapour, titanium liquid in the titanium flow container internal moisture rapid vaporization under condition of negative pressure flash, and titanium liquid temperature starts to reduce, when temperature reduces
Ferrous sulfate when to 30 DEG C~35 DEG C in titanium liquid reaches saturation state, and starts crystallization and be precipitated.Moisture flashes institute's shape in titanium liquid
At secondary steam separated after gas-liquid separator after, secondary steam entrainment acid solution drop be intercepted and flow back into titanium flow container；
Secondary steam enters compressor and is heated pressurization later, about 50 DEG C~150 DEG C of compressor exhaust temperature (overheat), after compression heating
Secondary steam after enter direct contact condenser and with spraying cooling water carry out contact condensation；The lime set and spray of secondary steam
Leaching cooling water falls under gravity into fluid-tight pond；Incoagulable gas in system is by vacuum pump discharge system.When titanium liquid temperature
Degree be reduced to 18 DEG C~20 DEG C after, close compressor and vacuum pump, by titanium flow container titanium liquid and errous sulfate crystal be discharged, and
Into next step solid-liquid separation process.
The titanium liquid pumping of the present embodiment compresses the system for separating ferrous sulfate and is using electric power as the drive energy of system
The cooling load of system is only the heat of condensation heat release and the transformation of compressor wasted work of secondary steam, and the cooling load of system is small, is
System operation does not generate secondary sewage.Fast cooling is carried out to titanium liquid using mechanical flash distillation mode, in temperature-fall period in titanium flow container not
There are dividing wall type cooling wall, without local overcooling phenomenon inside titanium liquid, ferrous sulfate shape on dividing wall type cooling wall is not present
At the problem of the brilliant dirt of brilliant scar, the high production efficiency of system, labor intensity is small.
Comparative example one:
The system that the titanium liquid steam injection flash distillation cooling of titanium dioxide industry mainstream applications is separated ferrous sulfate by this comparative example
The operation feelings of the system (system two) of the pumping compression separation ferrous sulfate of titanium liquid described in (system one) and the embodiment of the present invention one
Condition has carried out actual conditions comparison.
Comparative test operating condition and energy prices: the inlet amount of titanium flow container is 35m3.Contact condenser applied by two systems,
Vacuum pump, cooling tower, cooling tower pump, spray pump and side blender specification of equipment model be consistent, and with one phase of embodiment
Together.The raw steam pressure of driving of steam injection flash distillation cooling system is 7bar (absolute pressure), about 165 DEG C of vapor (steam) temperature.Pumping compression
The compressor for separating the system of ferrous sulfate uses LC20000 type lobed rotor compressor, and compressor prestowage power of motor is 280kW.
Steam price is 170 yuan/t, and electricity price is 0.71 yuan/kW.h；Cold in-water temperature is 30 DEG C.
It is as follows that two systems run comparative situation:
System one: titanium liquid is cooled to 18 DEG C, about 180min of total used time by 60 DEG C by operation, and steam consumption quantity is 6.3t/ kettle, always
Cooling water inflow is 1197m3；The secondary lime set sewage generated is 8.7m3.Total consuming of the steam and cooling water of one-pot cooling operation
For 1310 yuan/kettle.
System two: titanium liquid is cooled to 18 DEG C, about 100min of total used time by 60 DEG C by operation, and compressor average consumption power is
180kW, single batch compressor power consumption are 300kW.h/ kettle, and total cooling water inflow is 395m3；Generate secondary lime set sewage be
2.4m3.Total consuming of the steam and cooling water of one-pot cooling operation is 292 yuan/kettle.
Although above in association with attached drawing, invention has been described, and the invention is not limited to above-mentioned specific implementations
Mode, above-mentioned specific embodiment are only illustrative, rather than restrictive, and those skilled in the art are in this hair
Under bright enlightenment, without deviating from the spirit of the invention, many variations can also be made, these belong to guarantor of the invention
Protect range.
Claims (8)
1. a kind of system of titanium liquid pumping compression separation ferrous sulfate, it is characterised in that: including titanium flow container, compressor, contact
Condenser, vacuum pump, cooling tower, cooling tower pump, spray pump, fluid-tight pond, side blender；The compressor is used for titanium flow container
Secondary steam compressed, the exhaust outlet of compressor is connected with the secondary steam import of the direct contact condenser, contact
The spray water out of condenser passes through piping connection to fluid-tight pond；The import of spray pump is connected with fluid-tight pond, spray pump
Outlet is connected with the spray water inlet of the cooling tower；The shower water of the spray water out and the direct contact condenser of cooling tower
Import is connected；The cooling circulating water outlet of cooling tower bottom is connected with the import that the cooling tower pump, outlet that cooling tower pumps and
The cooling circulating water inlet of cooling tower is connected；The air inlet phase of the fixed gas gas outlet of direct contact condenser and the vacuum pump
Even；The side blender is mounted on the side wall of titanium flow container.
2. a kind of system of titanium liquid pumping compression separation ferrous sulfate according to claim 1, it is characterised in that: in titanium liquid
Tank and compressor chamber are provided with gas-liquid separator, and the gas-liquid separator is for separating the acid solution carried secretly in secondary steam.
3. a kind of system of titanium liquid pumping compression separation ferrous sulfate according to claim 2, it is characterised in that: the gas
Liquid/gas separator is the two-stage demister that baffle plate is combined with wire mesh demister.
4. a kind of system of titanium liquid pumping compression separation ferrous sulfate according to claim 1 to 3, it is characterised in that:
The compressor is Roots Compressor, screw compressor or piston compressor, and compressor carries out frequency conversion control.
5. a kind of system of titanium liquid pumping compression separation ferrous sulfate according to claim 1 to 4, it is characterised in that:
The vacuum pump is water-ring vacuum pump.
6. the system of -5 any a kind of titanium liquid pumping compression separation ferrous sulfate according to claim 1, it is characterised in that:
The spray water out of direct contact condenser and the difference in height in fluid-tight pond are not less than 10 meters.
7. a kind of method of titanium liquid pumping compression separation ferrous sulfate, it is characterised in that: titanium liquid is packed into titanium flow container, with compressor
Secondary steam in suction titanium flow container makes the vaporization flash distillation of the moisture in titanium liquid, passes through evaporation endothermic while titanium liquid is concentrated
Make the reduction of titanium liquid temperature, ferrous sulfate starts crystallization and is precipitated；Using gas-liquid separator to the acid solution drop carried secretly in secondary steam
It is separated, secondary steam enters direct contact condenser after compressor compresses heat pressurization and contacted with spraying cooling water
Formula condensation；Lime set falls into fluid-tight pond together with spraying cooling water；Incoagulable gas in system is by vacuum pump discharge system.
8. the method for titanium liquid pumping compression separation ferrous sulfate according to claim 7, it is characterised in that: the charging of titanium flow container
Amount is 30-36m3, feeding temperature is 55-65 DEG C, and compressor suction speed is 20m3/ s, compressor exhaust temperature are 50-150 DEG C,
The saturation temperature of ferrous sulfate is 30-35 DEG C in titanium liquid；Close compressor and vacuum after titanium liquid temperature is reduced to 18-20 DEG C
Pump, by titanium flow container titanium liquid and errous sulfate crystal be discharged, be separated by solid-liquid separation to obtain ferrous sulfate product.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177637A (en) * | 2021-12-24 | 2022-03-15 | 郦妙玲 | Novel material distillation of fluorine containing is with stirring type and is exempted from to wash stills |
| CN114735876A (en) * | 2022-04-11 | 2022-07-12 | 内蒙古恒星化学有限公司 | System and method for reducing organic silicon wastewater treatment energy consumption by utilizing waste heat |
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