CN106517268A - Method and device for preparing magnesium sulfate by alkylate waste sulfuric acid - Google Patents
Method and device for preparing magnesium sulfate by alkylate waste sulfuric acid Download PDFInfo
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- CN106517268A CN106517268A CN201611151237.5A CN201611151237A CN106517268A CN 106517268 A CN106517268 A CN 106517268A CN 201611151237 A CN201611151237 A CN 201611151237A CN 106517268 A CN106517268 A CN 106517268A
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- 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
- C01F5/00—Compounds of magnesium
- C01F5/40—Magnesium sulfates
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Abstract
The invention relates to the technical field of a device for preparing magnesium sulfate by waste sulfuric acid, and particularly relates to a method for preparing magnesium sulfate by alkylate waste sulfuric acid and a device for preparing magnesium sulfate by alkylate waste sulfuric acid. The method includes steps of performing material mixing, high-temperature calcination, primary cooling and dust removal, secondary cooling and dust removal, and tail gas treatment and other processes on magnesium oxide and waste oxide, thus the method and device for preparing magnesium sulfate by alkylate waste sulfuric acid have good effect in treating high-concentration organic matter waste acid treatment and not easy to generate residues.
Description
Technical field
The present invention relates to Waste Sulfuric Acid Sulphuric acid magnesium apparatus technical field, more particularly to a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium
Method and apparatus.
Background technology
Now with the development of society, China is relieving haperacidity big country, produces 100000000 tons of sulfuric acid per year, while China is also to use sour big country,
In using sulfuric acid process, utilization rate can not all reach 100%, it is impossible to have major part to be changed into sulfur waste in the part acid for utilizing completely
According to the useless treatment industry of middle national crisis, acid, reports that China produces spent acid amount per year and reached 7,500,000 tons；The processing mode of spent acid has 4 kinds at present：
1) process is neutralized using limewash, 2) adopt graphite or tantalum material, high-silicon cast iron material to be concentrated for evaporimeter, 3) giving birth to
Recycle during product, such as applied mechanically using spent acid production byproduct (chemical fertilizer) or product, 4) by Pintsch process, mix burning etc. and realize
Sulphur ressource is recycled；But these processing mode costs are all higher, and every profession and trade difference spent acid content is different, some spent acid
In it is many containing impurity such as the organic matters containing high concentration in salt, the spent acid having, wherein especially for there is high-enriched organics to give up
Acid does not have particularly preferred method；
As the magnesium resources such as China's magnesia, magnesite are compared with horn of plenty, magnesium sulfate is widely used, the huge market demand, and
Production magnesium sulfate is less demanding to sulfuric acid content, more than 40% Waste Sulfuric Acid can be adopted completely to produce, also had in the market
Prepare the method for magnesium sulfate to process Waste Sulfuric Acid by waste sulfuric acid from alkylation, but processing procedure need to add various catalyst etc.,
Course of reaction is complex, and easily produces residue, causes magnesium sulfate Product Precision not high；And the utilization rate of magnesia
It is not high, reclaim more difficult, cause the waste of resource.
The content of the invention
It is an object of the invention to provide to there is high-enriched organics spent acid high treating effect to be not likely to produce the one of residue
Plant waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus and method.
Technical scheme is as follows：
The present invention provides a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method：
Step 1：Material mixes：Magnesia in magnesia feed bin squeezes into tubular reactor after belt scale metering；It is useless
Spent acid in acid solution storage tank squeezes into sulfuric acid gauge tank by pump, then after sulfuric acid gauge tank is measured squeezes into tubular reactor；Oxygen
Change and after magnesium and spent acid are reacted in tubular reactor, obtain reactant further fully reaction in blender；
Step 2：High-temperature calcination：The reactant of formation sends into burning in roaster by air-cooled cage, controls furnace
For 800 DEG C, the organic carbon removing in reactant is made；
Step 3：Once cooling dedusting：Lower the temperature from roaster and combustion chamber anhydrous magnesium sulfate out through air-cooled cage
The first feed bin being entered afterwards, continuing cooling in the first feed bin, the dust in roaster is then sucked by one cyclonic deduster；
Step 4：Cooling twice dedusting：The second material is entered after water-cooled cage in the anhydrous magnesium sulfate in the first feed bin
Storehouse, enters the first automatic packaging machine packing transmitting system after cooling, the dust in the first feed bin is sucked by second cyclone dust extractor；
Step 5：Vent gas treatment：Waste gas in second feed bin is squeezed into by the second blower fan after the collection of the first sack cleaner
In first residual-heat exchanger, pass through the cold air outside the 3rd blower fan introducing system in the first residual-heat exchanger, waste gas is carried out
Heat recovery, enters tail gas absorber after waste gas cooling, after tail gas absorber absorbs obtains Adlerika.
Preferably, the hot gas in the second cyclone dust extractor in the one cyclonic deduster and step 4 in step 3 is by the
Two blower fans are squeezed into and are exchanged heat in the first residual-heat exchanger；The fresh high temperature formed after waste gas heat exchange in first residual-heat exchanger is empty
Gas enters roaster.
Preferably, the high-temperature gas that the magnesia in step 1 in tubular reactor is produced under reaction with acid pickle is by gas
After body absorber is collected, roaster is squeezed into finally by four fan device.
Preferably, step 1：Dissolving mixing：The anhydrous sulphur remained in roaster in the Adlerika of step 5 and step 2
Sour magnesium flows into dissolving tank, and dissolving tank enters surge tank after being passed through mother liquor mixing again；Step 2：Filter：Magnesium sulfate in surge tank
Solution is squeezed in filter press by feed pump and is filtered, and discharges solid particle；Adlerika after filtration is buffered into filtrate
Tank；Step 3：Crystallization：Adlerika in filtrate surge tank is squeezed into cooling reactor group by filter pump and carries out spontaneous nucleation；Step
4：Centrifugation：Magnesium sulfate magma after cooling down in cooling reactor group is centrifuged by centrifuge；Without the magnesium sulfate of crystallization
Liquid is then admitted to mother liquor tank, and the mother liquor in mother liquor tank squeezes into dissolving tank by mother liquor pump, recycles；Step 5：Primary drying
And dedusting：Magnesium sulfate solid after centrifugation is sent into fluid bed by solid conveyer and carries out being dried for the first time；Wherein in fluid bed
Dust pass sequentially through cyclone separator, the 5th blower fan, the second sack cleaner after enter gas emptying chimney；Step 6：It is secondary
It is dried and packs：Magnesium sulfate solid is sent into after being dried on fluid bed after carrying out redrying in cooling stove and is wrapped into second automatically
Installation, transmitting system after being packed by the second automatic packaging machine.
The present invention provides a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus, including magnesia feed bin and spent acid fluid reservoir；Institute
State magnesia feed bin and spent acid fluid reservoir is connected with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate preparation system includes
The tubular reactor that is sequentially connected, blender, air-cooled cage, roaster, combustion chamber, the first blower fan, the first feed bin, water-cooled are twisted
Cage, the second feed bin and the first automatic packaging machine；Dedusting filter is additionally provided with second feed bin；The dust removal and filtration dress
Put including the first sack cleaner, the second blower fan, the first residual-heat exchanger, tail gas absorber being sequentially connected；Described more than first
Heat exchanger is also associated with the 3rd blower fan；First residual-heat exchanger is connected with roaster；The air-cooled cage and roaster
Between be provided with one cyclonic deduster, the one cyclonic deduster is connected with the second blower fan；It is provided with first feed bin
Second cyclone dust extractor, the second cyclone dust extractor are connected with the second blower fan；Between the spent acid liquid storage tank and tubular reactor
It is provided with sulfuric acid gauge tank；Belt conveyer scale is provided between the magnesia feed bin and tubular reactor；The sulfuric acid gauge tank with
Gas absorber is provided between tubular reactor；Sulfuric acid gauge tank is connected by four fan device with roaster.
Preferably, the tail gas absorber is also associated with dissolving tank；The dissolving tank is connected with epsom salt and prepares system
System, surge tank that the epsom salt preparation system includes being sequentially connected, feed pump, filter press, filtrate surge tank, filtrate pump,
Cooling reactor group, centrifuge, solid conveyer, fluid bed, cooler and the second automatic packaging machine；The centrifuge is also associated with mother
Flow container, mother liquor tank are connected with dissolving tank by mother liquor pump；First residual-heat exchanger is connected with roaster；On the fluid bed
Cyclone separator is connected with, the cyclone separator is connected with the second sack cleaner by the 5th blower fan, the second sack cleaner
It is connected with gas emptying chimney.
It is by the alkyl with high-enriched organics that the present invention provides a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method and device
Change Waste Sulfuric Acid by solid-state reaction being carried out with the magnesium-containing ore such as magnesia, magnesite, as both do not react in solute, do not produce
Raw waste water, the sulfuric acid that reaction is removed in spent acid generate magnesium sulfate simultaneously, remove organic matter in reactant by high-temperature calcination, lead to
Cross purification, dedusting, absorption and high-quality anhydrous magnesium sulfate gone out to the process for producing of tail gas, wherein by material, tail gas heat exchange by heat
Amount sufficiently using in the method for reducing energy consumption, is producing the anhydrous magnesium sulfate of high-quality while the work that spent acid is turned waste into wealth
Skill.
Description of the drawings
By detailed description below in conjunction with the accompanying drawings, the aforesaid and other objects, features and advantages of the present invention will become
Obviously.
Wherein：Fig. 1 is schematic structural view of the invention；
Fig. 2 is epsom salt system structure diagram of the present invention；
In accompanying drawing, 1 is magnesia feed bin, and 2 is spent acid fluid reservoir, and 3 is tubular reactor, and 4 is blender, and 5 is air-cooled strand
Cage, 6 is roaster, and 7 is combustion chamber, and 8 is the first blower fan, and 9 is the first feed bin, and 10 is water-cooled cage, and 11 is the second feed bin, and 12 are
First automatic packaging machine, 13 is the first sack cleaner, and 14 is the second blower fan, and 15 is the first residual-heat exchanger, and 16 inhale for tail gas
Tower is received, 17 is the 3rd blower fan, and 18 is one cyclonic deduster, and 19 is second cyclone dust extractor, and 20 is sulfuric acid gauge tank, and 21 is skin
Belt scale, 22 is absorption column of gas, and 23 is four fan device, and 24 is dissolving tank, and 26 is surge tank, and 27 is feed pump, and 28 is filter press,
29 is filtrate surge tank, and 30 is filtrate pump, and 31 is cooling reactor, and 32 is centrifuge, and 33 is solid conveyer, and 34 is fluid bed, 35
For cooler, 36 is the second automatic packaging machine, and 37 is mother liquor tank, and 38 is mother liquor pump, and 39 is cyclone separator, and 40 is tendencies
Machine, 41 is the second sack cleaner, and 42 is that gas empties chimney, and 43 is originally water pot, and 45 is the second residual-heat exchanger, and 46 is the
Six blower fans.
Specific embodiment
Embodiment 1
It is shown in Figure 1, step 1：Material mixes：Magnesia in magnesia feed bin squeezes into pipe after belt scale metering
Formula reactor；Spent acid in spent acid liquid storage tank squeezes into sulfuric acid gauge tank by pump, then after sulfuric acid gauge tank is measured squeezes into pipe
Formula reactor；Magnesia obtains reactant after reacting in tubular reactor with spent acid further fully anti-in blender
Should；Step 2：High-temperature calcination：The reactant of formation sends into burning in roaster by air-cooled cage, controls furnace for 800
DEG C, make the organic carbon removing in reactant；Step 3：Once cooling dedusting：From roaster and combustion chamber out anhydrous
Magnesium sulfate enters the first feed bin after the cooling of air-cooled cage, continues cooling in the first feed bin, the dust in roaster then by
One cyclonic deduster is sucked；Step 4：Cooling twice dedusting：Anhydrous magnesium sulfate in the first feed bin is through water-cooled cage
The second feed bin being entered afterwards, the first automatic packaging machine packing transmitting system being entered after cooling, the dust in the first feed bin is revolved by two grades
Wind deduster is sucked；Step 5：Vent gas treatment：Waste gas in second feed bin is after the collection of the first sack cleaner by the second wind
Machine is squeezed in the first residual-heat exchanger, passes through the cold air outside the 3rd blower fan introducing system, to useless in the first residual-heat exchanger
Gas carries out heat recovery, enters tail gas absorber after waste gas cooling, after tail gas absorber absorbs obtains Adlerika.
After magnesia and Waste Sulfuric Acid are measured respectively, tubular reactor is squeezed into, the reactant for obtaining enters cone blender, enters
The reactant that one step is obtained after fully reacting burns into roaster, and the ignition temperature that stove is controlled is 800 DEG C, fills organic matter
Remove after dividing carbonization；Air-cooled cage cooling is first passed through from stove anhydrous magnesium sulfate out, into the first feed bin, second is connect above
Cyclone separator, then after water-cooled cage enters the second feed bin, connects the first sack cleaner above, and first is entered after cooling
Automatic packaging machine packing transmitting system；Pass through four fan device Jing through the hot blast of the second cyclone separator and the first sack cleaner
Crossing afterheat heat exchanger carries out heat recovery, enters tail gas absorber after waste gas cooling, add in tail gas absorber magnesia and from
Water, obtains Adlerika after absorption；Due to the temperature of charge from roaster out it is higher, can be direct using air-cooled cage
Contacting material, heat transfer coefficient are high, be easily caused equipment deformation using other modes cooling, and air-cooled cage coordinates the first blower fan
Greatly strengthen cooling effect；As the material from the first feed bin out adopts water-cooled cage, the heat transfer efficiency of water-cooled cage is high,
And price is cheap, production cost is reduced.
Embodiment 2
On the basis of embodiment 1, in the second cyclone dust extractor in one cyclonic deduster and step 4 in step 3
Hot gas squeezed into by the second blower fan and exchanged heat in the first residual-heat exchanger；Formed after waste gas heat exchange in first residual-heat exchanger
Fresh high temperature air enter roaster.
As one cyclonic deduster and the hot gas in second cyclone dust extractor squeeze into the exchange of the first waste heat by the second blower fan
Exchanged heat in device, a part of fresh air formed after exchanging heat in the first residual-heat exchanger can enter roaster as supplement
Air, it is possible to reduce the consumption of thermal source, increases operation rate.
Embodiment 3
On the basis of embodiment 1, the height that the magnesia in step 1 in tubular reactor is produced under reaction with acid pickle
After wet body is by gas absorber collection, roaster is squeezed into finally by four fan device.
Substantial amounts of heat can be produced during due to magnesia and sulfur waste acid reaction, this hot gas collected by gas absorber after by
Four fan device squeezes into roaster, is formed and is recycled, it is to avoid the waste of resource.
Embodiment 5,
The dissolving mixing on the basis of embodiment 1：The nothing remained in roaster in the Adlerika of step 5 and step 2
Water magnesium sulfate flows into dissolving tank, and dissolving tank enters surge tank after being passed through mother liquor mixing again；Filter：Magnesium sulfate in surge tank is molten
Liquid is squeezed in filter press by feed pump and is filtered, and discharges solid particle；Adlerika after filtration enters filtrate surge tank；
Crystallization：Adlerika in filtrate surge tank is squeezed into cooling reactor group by filter pump and carries out spontaneous nucleation；Centrifugation：In cooling reactor
Magnesium sulfate magma in group after cooling is centrifuged by centrifuge；Mother liquor is admitted to then without the magnesium sulfate liquid of crystallization
Tank, the mother liquor in mother liquor tank squeeze into dissolving tank by mother liquor pump, recycle；Primary drying dedusting：Magnesium sulfate after centrifugation
Solid is sent into fluid bed by solid conveyer and carries out being dried for the first time；Dust wherein in fluid bed passes sequentially through cyclonic separation
Gas emptying chimney is entered after device, the 5th blower fan, the second sack cleaner；Redrying is simultaneously packed：Magnesium sulfate solid is in fluidisation
Send into after being dried on bed and enter the second automatic packaging machine after redrying being carried out in cooling stove, after being packed by the second automatic packaging machine
Transmitting system.
After magnesia and Waste Sulfuric Acid are measured respectively, tubular reactor is squeezed into, the solid product for obtaining enters cone blender,
Further fully react, the gaseous product for obtaining burns into roaster, fully reacted magnesium sulfate burns into roaster,
The ignition temperature that stove is controlled is 800 DEG C, makes organic matter fully be carbonized；The first wind is first passed through from stove anhydrous magnesium sulfate out
Machine is lowered the temperature, and into the first feed bin, connects the second cyclone separator above, then enters the second feed bin after water-cooled cage, above
The first sack cleaner is connect, the first automatic packaging machine after cooling, is entered；Through the second cyclone separator and the first sack cleaner
Hot blast heat recovery is carried out through afterheat heat exchanger by four fan device, tail gas absorber is entered after waste gas cooling, tail gas is inhaled
Receive, after absorption, obtain Adlerika；Anhydrous magnesium sulfate after stove burning, pours into
Tail gas absorption liquid and running water are passed through inside dissolving tank, subsequently into surge tank, filter press are squeezed into by feed pump, solid is entered
White residue feed bin, liquid enter filtrate surge tank, then squeeze into cooling reactor group by filtrate pump, and the magma after cooling passes through centrifuge
It is centrifuged；Solid after centrifugation enters fluidized bed by weighing balance and is dried, then by cool down stove, into second from
Dynamic packing machine.Mother liquor after centrifugation enters mother liquor tank, squeezes into dissolving tank by Recycling Mother Solution pump and dissolves magnesium sulfate；So circulate；
Hot blast after exchanging heat in the first residual-heat exchanger can reduce heating as the thermal source of fluid bed.
A kind of waste sulfuric acid from alkylation anhydrous slufuric acid magnesium apparatus, it is characterised in that including magnesia feed bin 1 and spent acid liquid storage
Tank 2；The magnesia feed bin and spent acid fluid reservoir are connected with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate prepares system
System includes the tubular reactor 3, blender 4, air-cooled cage 5, roaster 6, combustion chamber 7, the first blower fan 8, first being sequentially connected
Feed bin 9, water-cooled cage 10, the second feed bin 11 and the first automatic packaging machine 12；Dust removal and filtration is additionally provided with second feed bin
Device；The first sack cleaner 13 that the dedusting filter includes being sequentially connected, the second blower fan 14, the first residual-heat exchanger
15th, tail gas absorber 16；First residual-heat exchanger is also associated with the 3rd blower fan 17；First residual-heat exchanger and roasting
Stove connects；One cyclonic deduster 18 is provided between the air-cooled cage and roaster, the one cyclonic deduster and second
Blower fan connects；Second cyclone dust extractor 19 is provided with first feed bin, the second cyclone dust extractor is connected with the second blower fan；
Sulfuric acid gauge tank 20 is provided between the spent acid liquid storage tank and tubular reactor；The magnesia feed bin and tubular reactor it
Between be provided with belt conveyer scale 21；Gas absorber 22 is provided between the sulfuric acid gauge tank and tubular reactor；Sulfuric acid gauge tank with
Roaster is connected by four fan device 23.By arranging tubular reactor, mixed with spent acid in order to magnesia；By setting
Put blender so that magnesia is more preferable with what spent acid can mix, and solid-liquid reaction is more abundant；By air-cooled cage, in order to incite somebody to action
Magnesia sends into roaster and burning Indoor Combustion with the magnesium sulfate after the abundant unit of spent acid, to be prepared into anhydrous magnesium sulfate, its
Middle combustion chamber can guarantee that natural gas fully burns, and be easily controlled temperature；By arranging the first blower fan and the first feed bin, will be from stove
Son anhydrous magnesium sulfate out first carries out preliminary cooling；By arranging water-cooled cage, water-cooled cage can adopt water-cooled herein
Conveying cage, to realize that the second feed bin is finally sent in the cooling to anhydrous magnesium sulfate again, by the first automatic packaging machine pair
Transmitting system after finished product anhydrous magnesium sulfate product packaging；By the first sack cleaner, to remove the dust in the second feed bin, and
The waste gas flowed out from the first sack cleaner is lowered the temperature by the second blower fan and the first residual-heat exchanger so as to reach and meet row
Tail gas absorber, and discharge system are entered after the temperature for going out；As the first residual-heat exchanger is connected with roaster, in the first waste heat
High temperature air in exchanger after heat exchange is flowed into, and realizes circulation；By arranging one cyclonic deduster
And second cyclone dust extractor, with the solid and gas of realizing separation roaster and in the first feed bin；And pass through the second blower fan, with
One cyclonic deduster and the hot gas in second cyclone dust extractor are sucked and exchanged heat in the first residual-heat exchanger；Due to arranging
There are sulfuric acid gauge tank and belt conveyer scale, in order to measure to acid pickle and magnesia；By arranging gas absorber and the 4th
Blower fan, collects the gas that alkylation sulfuric acid is produced under pyroreaction, and four fan device is exactly to draw them to enter roaster；Work as pressure
Power can reach, and four fan device need not be opened, and waste gas just can need to open when pressure is not reached automatically into roaster
Open four fan device.
Preferably, filler is provided with the tail gas absorber, the filler includes magnesia and running water.By arranging oxidation
A part for tail gas is converted into Adlerika by magnesium and running water.
Preferably, the tail gas absorber is also associated with dissolving tank 24；The dissolving tank is connected with epsom salt preparation
System, surge tank 26 that the epsom salt preparation system includes being sequentially connected, feed pump 27, filter press 28, filtrate surge tank
29th, filtrate pump 30, cooling reactor group, centrifuge 32, solid conveyer 33, fluid bed 34, cooler 35 and the second automatic packaging machine
36；The centrifuge is also associated with mother liquor tank 37, and mother liquor tank is connected with dissolving tank by mother liquor pump 38；Connect on the fluid bed
There is cyclone separator 39, the cyclone separator is connected with the second sack cleaner 41 by the 5th blower fan 40, the second bag-type dust
Device is connected with gas emptying chimney 42.By arranging dissolving tank, will be easy to fall the Adlerika flowed out from tail gas absorber
Enter in dissolving tank and running water is passed through in tank；By arranging surge tank and feed pump so that Adlerika is squeezed into filter press
It is interior, by arranging filter press so that white residue contained in Adlerika to be separated；By arranging filtrate surge tank and filtrate
Pump, the Adlerika for carrying out filtering in filter press is squeezed in cooling reactor group；By arranging cooling reactor group, in order to
Crystallize after Adlerika is cooled down；By arranging centrifuge, in order to the magma centrifugation that will be flowed out from cooling reactor group；Pass through
Arrange fluid bed to realize being dried the magnesium sulfate after centrifugation；By arranging cooler, to carry out redrying；It is solid by arranging
Body conveyer with by epsom salt send into the second automatic packaging machine；As the first residual-heat exchanger is connected with roaster,
High temperature air in one residual-heat exchanger after heat exchange is flowed into, and realizes circulation；By arranging one cyclonic
Deduster and second cyclone dust extractor, with the solid and gas of realizing separation roaster and in the first feed bin；And pass through second
One cyclonic deduster and the hot gas in second cyclone dust extractor are sucked and are exchanged heat in the first residual-heat exchanger by blower fan；
Due to being provided with sulfuric acid gauge tank and belt conveyer scale, in order to measure to acid pickle and magnesia；By arranging GAS ABSORPTION
Device and four fan device, collect the gas that alkylation sulfuric acid is produced under pyroreaction, and four fan device is exactly to draw them to enter roasting
Burn stove；When pressure can reach, four fan device need not be opened, and waste gas just can be automatically into roaster, when pressure is not reached
When need open four fan device；By arranging cyclone separator, to absorb the dust on fluid bed, and by the 5th blower fan and
Second sack cleaner, will empty chimney discharge system by gas after dust-filtering；By to epsom salt in tail gas
The collection of solution, then after filter and remove residue crystallization, centrifugation, be dried, the epsom salt of high-quality is produced in dedusting, wherein seven water
The material of Adlerika is all from anhydrous magnesium sulfate workshop, realizes the higher utilization rate of resource.
Preferably, the filter press is connected with originally water pot 43.By arranging originally water pot, in order to supply to filter press
Water.
Preferably, the cooling reactor group includes at least eight cooling reactors 31.By arranging eight cooling reactors to ensure system
Stable operation.
Preferably, the liquid that the cyclone separator and the second sack cleaner are discharged flows into dissolving tank.The sulfuric acid of discharge
Magnesium solution is passed back in dissolving tank, is recycled.
Preferably, the second residual-heat exchanger 45 is also associated with the fluid bed, is connected with second residual-heat exchanger
6th blower fan 46.As the vapor (steam) temperature in general chemical plant is all higher, at 160 degree or so, being passed directly into fluid bed can cause seven
Water magnesium sulfate loses the crystallization water；Enable the drying of epsom salt real by arranging the second residual-heat exchanger and the 6th blower fan
Existing temperature control, not so easily loses the crystallization water.
The above, is only presently preferred embodiments of the present invention, not does any pro forma restriction to the present invention, it is every according to
According to any simple modification, equivalent variations made to above example in technical spirit of the invention, the guarantor of the present invention is each fallen within
Within the scope of shield.
Claims (6)
1. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method：Characterized in that,
Step 1：Material mixes：Magnesia in magnesia feed bin squeezes into tubular reactor after belt scale metering；Acid pickle
Spent acid in storage tank squeezes into sulfuric acid gauge tank by pump, then after sulfuric acid gauge tank is measured squeezes into tubular reactor；Magnesia
Obtain reactant further fully to react in blender after reacting in tubular reactor with spent acid；
Step 2：High-temperature calcination：The reactant of formation sends into burning in roaster by air-cooled cage, controls furnace for 800
DEG C, make the organic carbon removing in reactant；
Step 3：Once cooling dedusting：Lower the temperature from roaster and combustion chamber anhydrous magnesium sulfate out through air-cooled cage laggard
Enter the first feed bin, continue cooling in the first feed bin, the dust in roaster is then sucked by one cyclonic deduster；
Step 4：Cooling twice dedusting：The second feed bin is entered after water-cooled cage in the anhydrous magnesium sulfate in the first feed bin,
The first automatic packaging machine packing transmitting system is entered after cooling, the dust in the first feed bin is sucked by second cyclone dust extractor；
Step 5：Vent gas treatment：Waste gas in second feed bin squeezes into first by the second blower fan after the collection of the first sack cleaner
In residual-heat exchanger, pass through the cold air outside the 3rd blower fan introducing system in the first residual-heat exchanger, heat is carried out to waste gas
Reclaim, after waste gas cooling, enter tail gas absorber, Adlerika is obtained after tail gas absorber absorbs.
2. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method according to claim 1：Characterized in that, in step 3 one
The hot gas in second cyclone dust extractor in level cyclone dust collectors and step 4 is squeezed in the first residual-heat exchanger by the second blower fan
Exchanged heat；The fresh high temperature air formed after waste gas heat exchange in first residual-heat exchanger enters roaster.
3. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method according to claim 1：Characterized in that, tubular type in step 1
After the high-temperature gas that magnesia in reactor is produced under reaction with acid pickle is by gas absorber collection, finally by the 4th
Blower fan squeezes into roaster.
4. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method according to claim 1：Characterized in that,
Step 1：Dissolving mixing：The anhydrous magnesium sulfate remained in roaster in the Adlerika of step 5 and step 2 flows into molten
Solution tank, dissolving tank enter surge tank after being passed through mother liquor mixing again；
Step 2：Filter：Adlerika in surge tank is squeezed in filter press by feed pump and is filtered, and discharges solid particle；
Adlerika after filtration enters filtrate surge tank；
Step 3：Crystallization：Adlerika in filtrate surge tank is squeezed into cooling reactor group by filter pump and carries out spontaneous nucleation；
Step 4：Centrifugation：Magnesium sulfate magma after cooling down in cooling reactor group is centrifuged by centrifuge；Without crystallization
Magnesium sulfate liquid be then admitted to mother liquor tank, the mother liquor in mother liquor tank squeezes into dissolving tank by mother liquor pump, recycle；
Step 5：Primary drying dedusting：Magnesium sulfate solid after centrifugation is sent into fluid bed by solid conveyer and is carried out for the first time
It is dried；Dust wherein in fluid bed enters gas row after passing sequentially through cyclone separator, the 5th blower fan, the second sack cleaner
Empty chimney；
Step 6：Redrying is simultaneously packed：Magnesium sulfate solid is sent into after being dried on fluid bed after carrying out redrying in cooling stove
Into the second automatic packaging machine, transmitting system after being packed by the second automatic packaging machine.
5. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus, it is characterised in that including magnesia feed bin and spent acid fluid reservoir；It is described
Magnesia feed bin and spent acid fluid reservoir are connected with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate preparation system include according to
The tubular reactor of secondary connection, blender, air-cooled cage, roaster, combustion chamber, the first blower fan, the first feed bin, water-cooled cage,
Second feed bin and the first automatic packaging machine；Dedusting filter is additionally provided with second feed bin；The dedusting filter
Including the first sack cleaner, the second blower fan, the first residual-heat exchanger, tail gas absorber that are sequentially connected；First waste heat
Exchanger is also associated with the 3rd blower fan；First residual-heat exchanger is connected with roaster；The air-cooled cage and roaster it
Between be provided with one cyclonic deduster, the one cyclonic deduster is connected with the second blower fan；Two are provided with first feed bin
Level cyclone dust collectors, the second cyclone dust extractor are connected with the second blower fan；Set between the spent acid liquid storage tank and tubular reactor
It is equipped with sulfuric acid gauge tank；Belt conveyer scale is provided between the magnesia feed bin and tubular reactor；The sulfuric acid gauge tank and pipe
Gas absorber is provided between formula reactor；Sulfuric acid gauge tank is connected by four fan device with roaster.
6. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus according to claim 5：Characterized in that, the tail gas absorption
Tower is also associated with dissolving tank；The dissolving tank is connected with epsom salt preparation system, and the epsom salt preparation system includes
The surge tank that is sequentially connected, feed pump, filter press, filtrate surge tank, filtrate pump, cooling reactor group, centrifuge, solid conveyer,
Fluid bed, cooler and the second automatic packaging machine；The centrifuge is also associated with mother liquor tank, and mother liquor tank is by mother liquor pump and dissolving
Tank connects；First residual-heat exchanger is connected with roaster；Cyclone separator is connected with the fluid bed, the cyclonic separation
Device is connected with the second sack cleaner by the 5th blower fan, and the second sack cleaner is connected with gas emptying chimney.
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| CN107555453A (en) * | 2017-09-25 | 2018-01-09 | 山东垚石化工科技有限公司 | A kind of technique of alkylate oil Waste Sulfuric Acid production anhydrous magnesium sulfate or/and high purity magnesium oxide |
| CN107827130A (en) * | 2017-12-13 | 2018-03-23 | 青岛锐丰源化工有限公司 | Utilize the production line for being alkylated spent acid and preparing magnesium sulfate |
| CN107875994A (en) * | 2017-12-13 | 2018-04-06 | 青岛锐丰源化工有限公司 | Magnesia high-temperature reactor |
| CN107986305A (en) * | 2017-12-13 | 2018-05-04 | 青岛锐丰源化工有限公司 | Utilize the production technology for being alkylated spent acid and preparing magnesium sulfate |
| CN108178168A (en) * | 2017-12-29 | 2018-06-19 | 新疆中泰化学阜康能源有限公司 | Industrial waste sulfuric acid and the hot method acidolysis device of saltcake and application method |
| CN109574044A (en) * | 2018-11-20 | 2019-04-05 | 盘锦泓实环保科技有限公司 | A kind of production technology using alkylation spent acid production sulfate |
| CN110980782A (en) * | 2019-12-31 | 2020-04-10 | 盘锦泓实环保科技有限公司 | Method for producing high-purity magnesium sulfate by using alkylation waste sulfuric acid and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107555453A (en) * | 2017-09-25 | 2018-01-09 | 山东垚石化工科技有限公司 | A kind of technique of alkylate oil Waste Sulfuric Acid production anhydrous magnesium sulfate or/and high purity magnesium oxide |
| CN107555453B (en) * | 2017-09-25 | 2019-11-12 | 山东垚石化工科技有限公司 | A kind of technique that alkylate oil Waste Sulfuric Acid produces anhydrous magnesium sulfate or/and high purity magnesium oxide |
| CN107827130A (en) * | 2017-12-13 | 2018-03-23 | 青岛锐丰源化工有限公司 | Utilize the production line for being alkylated spent acid and preparing magnesium sulfate |
| CN107875994A (en) * | 2017-12-13 | 2018-04-06 | 青岛锐丰源化工有限公司 | Magnesia high-temperature reactor |
| CN107986305A (en) * | 2017-12-13 | 2018-05-04 | 青岛锐丰源化工有限公司 | Utilize the production technology for being alkylated spent acid and preparing magnesium sulfate |
| CN107875994B (en) * | 2017-12-13 | 2024-03-29 | 青岛锐丰源化工有限公司 | Magnesia high temperature reactor |
| CN107827130B (en) * | 2017-12-13 | 2024-04-02 | 青岛锐丰源化工有限公司 | Production line for preparing magnesium sulfate by using alkylated waste acid |
| CN108178168A (en) * | 2017-12-29 | 2018-06-19 | 新疆中泰化学阜康能源有限公司 | Industrial waste sulfuric acid and the hot method acidolysis device of saltcake and application method |
| CN108178168B (en) * | 2017-12-29 | 2020-02-07 | 新疆中泰化学阜康能源有限公司 | Industrial waste sulfuric acid and mirabilite thermal acidolysis device and use method thereof |
| CN109574044A (en) * | 2018-11-20 | 2019-04-05 | 盘锦泓实环保科技有限公司 | A kind of production technology using alkylation spent acid production sulfate |
| CN109574044B (en) * | 2018-11-20 | 2021-01-26 | 盘锦泓实环保科技有限公司 | Production process for producing sulfate by using alkylated waste acid |
| CN110980782A (en) * | 2019-12-31 | 2020-04-10 | 盘锦泓实环保科技有限公司 | Method for producing high-purity magnesium sulfate by using alkylation waste sulfuric acid and application thereof |
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