CN106517268B - A kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method and device - Google Patents
A kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method and device Download PDFInfo
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- CN106517268B CN106517268B CN201611151237.5A CN201611151237A CN106517268B CN 106517268 B CN106517268 B CN 106517268B CN 201611151237 A CN201611151237 A CN 201611151237A CN 106517268 B CN106517268 B CN 106517268B
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- C01F5/40—Magnesium sulfates
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Abstract
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 methods and device；By magnesia and spent acid by material mixing, high-temperature calcination, primary cooling and dedusting, secondary cooling simultaneously techniques such as dedusting, vent gas treatment, being made a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus and method to there is high-enriched organics spent acid high treating effect to be not likely to produce residue.
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,
Utilization rate cannot all reach 100% in using sulfuric acid process, have major part to become sulfur waste in the part acid that cannot be fully utilized
Acid reports that China produces spent acid amount per year and reached 7,500,000 tons according to Chinese dangerous waste treatment industry；The processing mode of spent acid has 4 kinds at present：
1) it is neutralized using limewash, 2) use graphite or tantalum material, high-silicon cast iron material to be concentrated for evaporator, 3) in life
Production during recycle, such as using spent acid production byproduct (chemical fertilizer) or product apply mechanically, 4) by Pintsch process, mix burning etc. realizations
Sulphur ressource recycles；But these processing mode costs are all higher, and every profession and trade difference spent acid content is different, some spent acid
In mostly containing impurity such as the organic matters containing high concentration in salt, the spent acid having, wherein useless especially for there is high-enriched organics
Acid is without particularly preferred method；
Since 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 of less demanding to sulfuric acid content, and 40% or more Waste Sulfuric Acid production may be used completely, also have currently on the market
The method of magnesium sulfate is prepared by waste sulfuric acid from alkylation to handle Waste Sulfuric Acid, but processing procedure needs that various catalyst etc. are added,
Reaction process is complex, and easy tos produce residue, causes magnesium sulfate Product Precision not high；And the utilization rate of magnesia
Not high, recycling is more difficult, causes the waste of resource.
Invention content
The object of the present invention is to provide to there is high-enriched organics spent acid high treating effect to be not likely to produce the one of residue
Kind 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 after belt scale metering by squeezing into tubular reactor；It is useless
Spent acid in acid solution storage tank squeezes into sulfuric acid gauge tank by pump, then squeezes into tubular reactor after being measured by sulfuric acid gauge tank；Oxygen
Change magnesium obtains reactant and enters further fully reaction in mixer after being reacted in tubular reactor with spent acid；
Step 2：High-temperature calcination：The reactant of formation, which is sent by air-cooled cage in roaster, to burn, and controls furnace
It is 800 DEG C, the organic carbon in reactant is made to remove；
Step 3：Primary cooling and dedusting：The anhydrous magnesium sulfate come out from roaster and combustion chamber cools down by the first wind turbine
Enter the first feed bin afterwards, continues to cool down in the first feed bin, the dust in roaster is then sucked by one cyclonic deduster；
Step 4：Secondary cooling and dedusting：Anhydrous magnesium sulfate in the first feed bin enters the second material after water cooling cage
Storehouse enters the first automatic packaging machine and is packaged transmitting system after cooling, the dust in the first feed bin is sucked by second cyclone dust extractor；
Step 5：Vent gas treatment：Exhaust gas in second feed bin is squeezed into after being collected by the first bag filter by the second wind turbine
In first residual-heat exchanger, by the cold air outside third wind turbine introducing system in the first residual-heat exchanger, exhaust gas is carried out
Heat recovery enters tail gas absorber after exhaust gas cooling, Adlerika is obtained after being absorbed by tail gas absorber.
Preferably, the hot gas in the second cyclone dust extractor in the one cyclonic deduster and step 4 in step 3 passes through
Two wind turbines are squeezed into the first residual-heat exchanger and are exchanged heat；The fresh high temperature formed after exhaust 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 and acid pickle are generated in the case where reacting is by gas
After body absorber is collected, roaster is squeezed into finally by four fan device.
Preferably, step 1：Dissolving mixing：Remaining anhydrous sulphur in roaster in the Adlerika and step 2 of step 5
Sour magnesium flows into dissolving tank, and dissolving tank enters surge tank after being passed through mother liquor mixing again；Step 2：Filtering：Magnesium sulfate in surge tank
Solution is squeezed into filter press by feed pump and is filtered, and solid particle is made to be discharged；Filtered Adlerika enters filtrate buffering
Tank；Step 3：Crystallization：Adlerika in filtrate surge tank squeezes into cooling reactor group by filter pump and carries out spontaneous nucleation；Step
4：Centrifugation：Magnesium sulfate magma after cooling is centrifuged by centrifuge in cooling reactor group；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 drying for the first time；Wherein in fluid bed
Dust pass sequentially through and be discharged into gas emptying chimney after cyclone separator, the 5th wind turbine, the second bag filter；Step 6：It is secondary
It dries and is packaged：It is sent into cooling furnace after magnesium sulfate solid is dry on fluid bed after carrying out redrying and enters the second automatic packet
Installation, transmitting system after being packaged 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
It states magnesia feed bin and spent acid fluid reservoir is connect with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate preparation system includes
Sequentially connected tubular reactor, mixer, air-cooled cage, roaster, combustion chamber, the first wind turbine, the first feed bin, water cooling twist
Cage, the second feed bin and the first automatic packaging machine；It is additionally provided with dedusting filter on second feed bin；The dust removal and filtration dress
It sets including sequentially connected first bag filter, the second wind turbine, the first residual-heat exchanger, tail gas absorber；Described more than first
Heat exchanger is also associated with third wind turbine；First residual-heat exchanger is connect with roaster；The air-cooled cage and roaster
Between be provided with one cyclonic deduster, which connect with the second wind turbine；It is provided on first feed bin
Second cyclone dust extractor, the second cyclone dust extractor are connect with the second wind turbine；Between the spent acid liquid storage tank and tubular reactor
It is provided with sulfuric acid gauge tank；It is provided with belt conveyer scale between the magnesia feed bin and tubular reactor；The sulfuric acid gauge tank with
Gas absorber is equipped between tubular reactor；Sulfuric acid gauge tank is connect with roaster by four fan device.
Preferably, the tail gas absorber is also associated with dissolving tank；The dissolving tank is connected with epsom salt and prepares system
System, the epsom salt preparation system include sequentially connected surge tank, 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 pumped by mother liquor and are connect with dissolving tank；First residual-heat exchanger is connect with roaster；On the fluid bed
It is connected with cyclone separator, which is connect by the 5th wind turbine with the second bag filter, the second bag filter
It is connect with gas emptying chimney.
It is by the alkyl with high-enriched organics that the present invention, which provides a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method and device,
Change Waste Sulfuric Acid not produce since the two is not reacted in solute by carrying out solid-state reaction with magnesium-containing ores such as magnesia, magnesites
Raw waste water, reaction remove the sulfuric acid in spent acid and generate magnesium sulfate simultaneously, removed organic matter in reactant by high-temperature calcination, lead to
Cross purification, dedusting, absorption go out high-quality anhydrous magnesium sulfate to the process for producing of tail gas, wherein the heat exchange by material, tail gas will be hot
Amount adequately utilizes the method to reduce energy consumption, in the work produced good anhydrous magnesium sulfate while spent acid being turned waste into wealth
Skill.
Description of the drawings
Through the following detailed description taken in conjunction with the accompanying drawings, present invention objects, features and advantages above-mentioned and other 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 attached drawing, 1 is magnesia feed bin, and 2 be spent acid fluid reservoir, and 3 be tubular reactor, and 4 be mixer, and 5 be air-cooled strand
Cage, 6 be roaster, and 7 be combustion chamber, and 8 be the first wind turbine, and 9 be the first feed bin, and 10 be water cooling cage, and 11 be the second feed bin, and 12 are
First automatic packaging machine, 13 be the first bag filter, and 14 be the second wind turbine, and 15 be the first residual-heat exchanger, and 16 inhale for tail gas
Tower is received, 17 be third wind turbine, and 18 be one cyclonic deduster, and 19 be second cyclone dust extractor, and 20 be sulfuric acid gauge tank, and 21 be skin
Belt scale, 22 be absorption column of gas, and 23 be four fan device, and 24 be dissolving tank, and 26 be surge tank, and 27 be feed pump, and 28 be filter press,
29 be filtrate surge tank, and 30 be filtrate pump, and 31 be cooling reactor, and 32 be centrifuge, and 33 be solid conveyer, and 34 be fluid bed, 35
It is the second automatic packaging machine for cooler, 36,37 be mother liquor tank, and 38 pump for mother liquor, and 39 be cyclone separator, and 40 be tendencies
Machine, 41 be the second bag filter, and 42 empty chimney for gas, and 43 be originally water pot, and 45 be the second residual-heat exchanger, and 46 be the
Six wind turbines.
Specific implementation mode
Embodiment 1
It is shown in Figure 1, step 1：Material mixes：Magnesia in magnesia feed bin after belt scale metering by squeezing into pipe
Formula reactor；Spent acid in spent acid liquid storage tank squeezes into sulfuric acid gauge tank by pump, then squeezes into pipe after being measured by sulfuric acid gauge tank
Formula reactor；Magnesia obtained after being reacted in tubular reactor with spent acid reactant enter in mixer it is further fully anti-
It answers；Step 2：High-temperature calcination：The reactant of formation, which is sent by air-cooled cage in roaster, to burn, and control furnace is 800
DEG C, so that the organic carbon in reactant is removed；Step 3：Primary cooling and dedusting：It is come out from roaster and combustion chamber anhydrous
Magnesium sulfate by the first wind turbine cooling after enter the first feed bin, continue to cool down in the first feed bin, the dust in roaster then by
One cyclonic deduster sucks；Step 4：Secondary cooling and dedusting：Anhydrous magnesium sulfate in the first feed bin passes through water cooling cage
Enter the second feed bin afterwards, the first automatic packaging machine is entered after cooling and is packaged transmitting system, the dust in the first feed bin is revolved by two level
Wind deduster sucks；Step 5：Vent gas treatment：Exhaust gas in second feed bin collected by the first bag filter after by the second wind
Machine is squeezed into the first residual-heat exchanger, by the cold air outside third wind turbine introducing system in the first residual-heat exchanger, to useless
Gas carries out heat recovery, enters tail gas absorber after exhaust gas cooling, Adlerika is obtained after being absorbed by tail gas absorber.
After magnesia and Waste Sulfuric Acid measure respectively, tubular reactor is squeezed into, obtained reactant enters cone blender, into
The reactant that one step obtains after fully reacting enters roaster burning, and the ignition temperature of stove control is 800 DEG C, and organic matter is made to fill
It is removed after dividing carbonization；The anhydrous magnesium sulfate come out from stove first passes through the cooling of the first wind turbine, into the first feed bin, connects second above
Then cyclone separator enters the second feed bin after water cooling cage, connects the first bag filter above, first is entered after cooling
Automatic packaging machine is packaged transmitting system；It is passed through by four fan device by the hot wind of the second cyclone separator and the first bag filter
Cross afterheat heat exchanger and carry out heat recovery, enter tail gas absorber after exhaust gas cooling, be added in tail gas absorber magnesia and from
Water obtains Adlerika after absorption；It, can be direct using air-cooled cage since the temperature of charge come out from roaster is higher
Contacting material, heat transfer coefficient is high, is easy to cause equipment deformation using other modes cooling, and air-cooled cage coordinates the first wind turbine
Greatly strengthen cooling effect；Since the material come out from the first feed bin uses water cooling cage, the heat transfer efficiency of water cooling cage is high,
And price is cheap, reduces production cost.
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 the first residual-heat exchanger and exchange heat by the second wind turbine；It is formed after exhaust gas heat exchange in first residual-heat exchanger
Fresh high temperature air enter roaster.
The first waste heat is squeezed into due to the hot gas in one cyclonic deduster and second cyclone dust extractor by the second wind turbine to exchange
It exchanges 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 heat source is increased operation rate.
Embodiment 3
On the basis of embodiment 1, height that the magnesia in step 1 in tubular reactor is generated with acid pickle in the case where reacting
After wet body is collected by gas absorber, roaster is squeezed into finally by four fan device.
Will produce a large amount of heat when being reacted with Waste Sulfuric Acid due to magnesia, this hot gas collected by gas absorber after by
Four fan device squeezes into roaster, is formed and is recycled, avoids the waste of resource.
Embodiment 5,
Mixing is dissolved on the basis of embodiment 1：Remaining nothing in roaster in the Adlerika and step 2 of step 5
Water magnesium sulfate flows into dissolving tank, and dissolving tank enters surge tank after being passed through mother liquor mixing again；Filtering：Magnesium sulfate in surge tank is molten
Liquid is squeezed into filter press by feed pump and is filtered, and solid particle is made to be discharged；Filtered Adlerika enters filtrate surge tank；
Crystallization：Adlerika in filtrate surge tank squeezes into cooling reactor group by filter pump and carries out spontaneous nucleation；Centrifugation：In cooling reactor
Magnesium sulfate magma after cooling is centrifuged by centrifuge in group；It is then admitted to mother liquor without the magnesium sulfate liquid of crystallization
Tank, the mother liquor in mother liquor tank are squeezed into dissolving tank by mother liquor pump, are recycled；Primary drying and dedusting：Magnesium sulfate after centrifugation
Solid is sent into fluid bed by solid conveyer and carries out drying for the first time；Dust wherein in fluid bed passes sequentially through cyclonic separation
Gas emptying chimney is discharged into after device, the 5th wind turbine, the second bag filter；Redrying is simultaneously packaged：Magnesium sulfate solid is fluidizing
It is sent into after drying in cooling furnace on bed after carrying out redrying and enters the second automatic packaging machine, after the packing of the second automatic packaging machine
Transmitting system.
After magnesia and Waste Sulfuric Acid measure respectively, tubular reactor is squeezed into, obtained solid product enters cone blender,
Further fully reaction, obtained gaseous product enter roaster burning, and the fully magnesium sulfate after reaction enters roaster burning,
The ignition temperature of stove control is 800 DEG C, and organic matter is made fully to be carbonized；The anhydrous magnesium sulfate come out from stove first passes through the first wind
Machine cools down, and into the first feed bin, connects the second cyclone separator above, and the second feed bin is then entered after water cooling cage, above
The first bag filter is connect, the first automatic packaging machine is entered after cooling；By the second cyclone separator and the first bag filter
Hot wind by four fan device by afterheat heat exchanger carry out heat recovery, exhaust gas cooling after enter tail gas absorber, tail gas inhale
It receives and magnesia and tap water is added in tower, Adlerika is obtained after absorption；Anhydrous magnesium sulfate after stove burns, is poured into
It is passed through tail gas absorption liquid and tap water inside dissolving tank, subsequently into surge tank, filter press is squeezed by feed pump, solid enters
White residue feed bin, liquid enter filtrate surge tank, then squeeze into cooling reactor group by filtrate pump, and magma after cooling passes through centrifuge
It is centrifuged；Solid after centrifugation is dried by weighing balance into fluidized bed, then by cooling furnace, is entering second certainly
Dynamic packing machine.Mother liquor after centrifugation enters mother liquor tank, and squeezing into dissolving tank by Recycling Mother Solution pump dissolves magnesium sulfate；So cycle；
Hot wind after exchanging heat in the first residual-heat exchanger can reduce heating as the heat source of fluid bed.
A kind of waste sulfuric acid from alkylation anhydrous slufuric acid magnesium apparatus, which is characterized in that including magnesia feed bin 1 and spent acid liquid storage
Tank 2；The magnesia feed bin and spent acid fluid reservoir are connect with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate prepares system
System includes sequentially connected tubular reactor 3, mixer 4, air-cooled cage 5, roaster 6, combustion chamber 7, the first wind turbine 8, first
Feed bin 9, water cooling cage 10, the second feed bin 11 and the first automatic packaging machine 12；It is additionally provided with dust removal and filtration on second feed bin
Device；The dedusting filter includes sequentially connected first bag filter 13, the second wind turbine 14, the first residual-heat exchanger
15, tail gas absorber 16；First residual-heat exchanger is also associated with third wind turbine 17；First residual-heat exchanger and roasting
Stove connects；It is provided with one cyclonic deduster 18 between the air-cooled cage and roaster, the one cyclonic deduster and second
Wind turbine connects；It is provided with second cyclone dust extractor 19 on first feed bin, which connect with the second wind turbine；
It is provided with sulfuric acid gauge tank 20 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 equipped between the sulfuric acid gauge tank and tubular reactor；Sulfuric acid gauge tank with
Roaster is connected by four fan device 23.By the way that tubular reactor is arranged, in order to which magnesia is mixed with spent acid；By setting
Set mixer so that magnesia can mix more preferable with spent acid, and solid-liquid reaction is more abundant；By air-cooled cage, in order to incite somebody to action
Magnesia is sent into roaster and burning Indoor Combustion with the magnesium sulfate after the abundant unit of spent acid, to be prepared into anhydrous magnesium sulfate,
Middle combustion chamber can guarantee that natural gas fully burns, and be easy to control temperature；It, will be from stove by the way that the first wind turbine and the first feed bin is arranged
The anhydrous magnesium sulfate of son out first carries out preliminary cooling；By the way that water cooling cage is arranged, water cooling may be used in water cooling cage herein
Cage is conveyed, the second feed bin is finally sent into the cooling of anhydrous magnesium sulfate again to realize, passes through the first automatic packaging machine pair
Transmitting system after finished product anhydrous magnesium sulfate product packaging；By the first bag filter, to remove the dust in the second feed bin, and
The exhaust gas flowed out out of first bag filter is cooled down by the second wind turbine and the first residual-heat exchanger, reaches and meets row
Tail gas absorber, and discharge system are discharged into after the temperature gone out；Since the first residual-heat exchanger is connect with roaster, in the first waste heat
High temperature air in exchanger after heat exchange, which flows into, provides thermal energy in roaster, realize cycle；By the way that one cyclonic deduster is arranged
And second cyclone dust extractor, to realize solid and gas in separation roaster and the first feed bin；And by the second wind turbine, with
Hot gas in one cyclonic deduster and second cyclone dust extractor is sucked in the first residual-heat exchanger and is exchanged heat；Due to setting
There are sulfuric acid gauge tank and belt conveyer scale, in order to be measured to acid pickle and magnesia；By the way that gas absorber and the 4th is arranged
Wind turbine, collects the gas that alkylation sulfuric acid generates 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 exhaust gas can need to open automatically into roaster when pressure is not achieved
Open four fan device.
Preferably, filler is equipped in the tail gas absorber, which includes magnesia and tap water.It is aoxidized by being arranged
Magnesium and tap water convert a part for tail gas to Adlerika.
Preferably, the tail gas absorber is also associated with dissolving tank 24；The dissolving tank is connected with epsom salt preparation
System, the epsom salt preparation system include sequentially connected surge tank 26, feed pump 27, filter press 28, filtrate surge tank
29, 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 connect by mother liquor pump 38 with dissolving tank；It is connected on the fluid bed
There is cyclone separator 39, which is connect by the 5th wind turbine 40 with the second bag filter 41, the second bag-type dust
Device is connect with gas emptying chimney 42.It, will be convenient for the Adlerika flowed out from tail gas absorber be fallen by the way that dissolving tank is arranged
Enter in dissolving tank and is passed through tap water in tank；By the way that surge tank and feed pump is arranged so that Adlerika is squeezed into filter press
It is interior, by the way that filter press is arranged to separate white residue contained in Adlerika；By the way that filtrate surge tank and filtrate is arranged
Pump squeezes into the Adlerika that filtering was carried out in filter press in cooling reactor group；By the way that cooling reactor group is arranged, in order to
It is crystallized after Adlerika is cooled down；By the way that centrifuge is arranged, in order to the magma centrifugation that will be flowed out out of cooling reactor group；Pass through
Fluid bed is set to realize to the magnesium sulfate drying after centrifugation；By the way that cooler is arranged, to carry out redrying；It is solid by being arranged
Body conveyer is to send epsom salt into the second automatic packaging machine；Since the first residual-heat exchanger is connect with roaster,
High temperature air in one residual-heat exchanger after heat exchange, which flows into, provides thermal energy in roaster, realize cycle；By the way that one cyclonic is arranged
Deduster and second cyclone dust extractor, to realize solid and gas in separation roaster and the first feed bin；And pass through second
Hot gas in one cyclonic deduster and second cyclone dust extractor is sucked in the first residual-heat exchanger and is exchanged heat by wind turbine；
Due to being provided with sulfuric acid gauge tank and belt conveyer scale, in order to be measured to acid pickle and magnesia；It is absorbed by the way that gas is arranged
Device and four fan device, collect the gas that alkylation sulfuric acid generates 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 exhaust gas can be not achieved automatically into roaster when pressure
When need open four fan device；By the way that cyclone separator is arranged, to absorb the dust on fluid bed, and by the 5th wind turbine and
Second bag filter will empty chimney discharge system after dust-filtering by gas；By to epsom salt in tail gas
The collection of solution, then good epsom salt is produced by crystallization, centrifugation, dry, dedusting after filter and remove residue, 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 the way that originally water pot is arranged, in order to supply filter press
Water.
Preferably, the cooling reactor group includes at least eight cooling reactors 31.By the way that eight cooling reactors are arranged to ensure system
Stable operation.
Preferably, the cyclone separator and the liquid of the second bag filter discharge flow into dissolving tank.The sulfuric acid of discharge
Magnesium solution passes back into dissolving tank, recycles.
Preferably, it is also associated with the second residual-heat exchanger 45 on the fluid bed, is connected on second residual-heat exchanger
6th wind turbine 46.Since the vapor (steam) temperature in general chemical plant is all higher, at 160 degree or so, seven can be led to by being passed directly into fluid bed
Water magnesium sulfate loses the crystallization water；Enable the drying of epsom salt real by the way that the second residual-heat exchanger and the 6th wind turbine is arranged
Existing temperature control, is not so easy to lose the crystallization water.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to any simple modification, equivalent variations made by above example, each falling within the guarantor of the present invention in the technical spirit of the present invention
Within the scope of shield.
Claims (6)
1. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method：It is characterized in that,
Step 1：Material mixes：Magnesia in magnesia feed bin after belt scale metering by squeezing into tubular reactor；Acid pickle
Spent acid in storage tank squeezes into sulfuric acid gauge tank by pump, then squeezes into tubular reactor after being measured by sulfuric acid gauge tank；Magnesia
Reactant is obtained after being reacted in tubular reactor with spent acid enters further fully reaction in mixer；
Step 2：High-temperature calcination：The reactant of formation, which is sent by air-cooled cage in roaster, to burn, and control furnace is 800
DEG C, so that the organic carbon in reactant is removed；
Step 3：Primary cooling and dedusting：The anhydrous magnesium sulfate come out from roaster and combustion chamber cools down laggard by the first wind turbine
Enter the first feed bin, continue to cool down in the first feed bin, the dust in roaster is then sucked by one cyclonic deduster；
Step 4：Secondary cooling and dedusting：Anhydrous magnesium sulfate in the first feed bin enters the second feed bin after water cooling cage,
Enter the first automatic packaging machine after cooling and be packaged transmitting system, the dust in the first feed bin is sucked by second cyclone dust extractor；
Step 5：Vent gas treatment：Exhaust gas in second feed bin by the second wind turbine after the collection of the first bag filter by squeezing into first
In residual-heat exchanger, by the cold air outside third wind turbine introducing system in the first residual-heat exchanger, heat is carried out to exhaust gas
Recycling enters tail gas absorber after exhaust gas cooling, Adlerika is obtained after being absorbed by tail gas absorber.
2. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method according to claim 1：It is characterized in that, one in step 3
The hot gas in second cyclone dust extractor in grade cyclone dust collectors and step 4 is squeezed by the second wind turbine in the first residual-heat exchanger
It exchanges heat；The fresh high temperature air formed after exhaust 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：It is characterized in that,
Magnesia in step 1 in tubular reactor is collected with the high-temperature gas that acid pickle is generated in the case where reacting by gas absorber
Afterwards, roaster is squeezed into finally by four fan device.
4. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium method according to claim 1：It is characterized in that,
Step 1：Dissolving mixing：In the Adlerika and step 2 of step 5 in roaster remaining anhydrous magnesium sulfate flow into it is molten
Tank is solved, dissolving tank enters surge tank after being passed through mother liquor mixing again；
Step 2：Filtering：Adlerika in surge tank, which is squeezed by feed pump in filter press, to be filtered, and solid particle is made to be discharged；
Filtered Adlerika enters filtrate surge tank；
Step 3：Crystallization：Adlerika in filtrate surge tank squeezes into cooling reactor group by filter pump and carries out spontaneous nucleation；
Step 4：Centrifugation：Magnesium sulfate magma after cooling is centrifuged by centrifuge in cooling reactor group；Without crystallization
Magnesium sulfate liquid be then admitted to mother liquor tank, the mother liquor in mother liquor tank by mother liquor pump squeeze into dissolving tank, recycle；
Step 5：Primary drying and dedusting：Magnesium sulfate solid after centrifugation is sent into fluid bed by solid conveyer and is carried out for the first time
It is dry；Dust wherein in fluid bed is discharged into gas row after passing sequentially through cyclone separator, the 5th wind turbine, the second bag filter
Empty chimney；
Step 6：Redrying is simultaneously packaged：It is sent into cooling furnace after magnesium sulfate solid is dry on fluid bed after carrying out redrying
Into the second automatic packaging machine, transmitting system after being packaged by the second automatic packaging machine.
5. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus, which is characterized in that including magnesia feed bin and spent acid fluid reservoir；It is described
Magnesia feed bin and spent acid fluid reservoir are connect with anhydrous magnesium sulfate preparation system；The anhydrous magnesium sulfate preparation system include according to
The tubular reactor of secondary connection, mixer, air-cooled cage, roaster, combustion chamber, the first wind turbine, the first feed bin, water cooling cage,
Second feed bin and the first automatic packaging machine；It is additionally provided with dedusting filter on second feed bin；The dedusting filter
Including sequentially connected first bag filter, the second wind turbine, the first residual-heat exchanger, tail gas absorber；First waste heat
Exchanger is also associated with third wind turbine；First residual-heat exchanger is connect with roaster；The air-cooled cage and roaster it
Between be provided with one cyclonic deduster, which connect with the second wind turbine；It is provided with two on first feed bin
Grade cyclone dust collectors, the second cyclone dust extractor are connect with the second wind turbine；It is set between the spent acid liquid storage tank and tubular reactor
It is equipped with sulfuric acid gauge tank；It is provided with belt conveyer scale between the magnesia feed bin and tubular reactor；The sulfuric acid gauge tank and pipe
Gas absorber is equipped between formula reactor；Sulfuric acid gauge tank is connect with roaster by four fan device.
6. a kind of waste sulfuric acid from alkylation Sulphuric acid magnesium apparatus according to claim 5：It is characterized in that, the tail gas absorption
Tower is also associated with dissolving tank；The dissolving tank is connected with epsom salt preparation system, which includes
Sequentially connected surge tank, 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 pumped and dissolved by mother liquor
Tank connects；First residual-heat exchanger is connect with roaster；It is connected with cyclone separator on the fluid bed, the cyclonic separation
Device is connect by the 5th wind turbine with the second bag filter, and the second bag filter is connect with gas emptying chimney.
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| 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 |
| CN107875994B (en) * | 2017-12-13 | 2024-03-29 | 青岛锐丰源化工有限公司 | Magnesia high temperature reactor |
| CN107986305B (en) * | 2017-12-13 | 2020-02-14 | 青岛锐丰源化工有限公司 | Production process for preparing magnesium sulfate by using alkylated waste acid |
| 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 |
| 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 |
| 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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| KR20010097371A (en) * | 2000-04-21 | 2001-11-08 | 우명우 | Manufacturing magnesium sulfate by waste sulfuric acid. |
| CN104016385A (en) * | 2014-05-18 | 2014-09-03 | 天津理工大学 | Method for preparing magnesium sulfate and magnesium silico calcium sulfur fertilizer by utilizing alkylated waste sulfuric acid |
| CN104118893B (en) * | 2014-07-31 | 2015-11-18 | 四川龙蟒钛业股份有限公司 | One utilizes titanium white waste acid manufacture level magnesium sulfate method |
| CN105399116B (en) * | 2015-11-16 | 2017-07-25 | 中国科学院过程工程研究所 | A kind of processing system of spent acid containing organic matter and its processing method and purposes |
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