CN108314632A - A method of recycling biruea prepares azodicarbonamide - Google Patents
A method of recycling biruea prepares azodicarbonamide Download PDFInfo
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- CN108314632A CN108314632A CN201711315606.4A CN201711315606A CN108314632A CN 108314632 A CN108314632 A CN 108314632A CN 201711315606 A CN201711315606 A CN 201711315606A CN 108314632 A CN108314632 A CN 108314632A
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C281/00—Derivatives of carbonic acid containing functional groups covered by groups C07C269/00 - C07C279/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group
- C07C281/20—Derivatives of carbonic acid containing functional groups covered by groups C07C269/00 - C07C279/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group the two nitrogen atoms of the functional groups being doubly-bound to each other, e.g. azoformamide
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Abstract
The present invention provides a kind of methods that recycling biruea prepares azodicarbonamide, improve the purity of biruea after biruea recycling after pulverization slurry process, mixed processes, washing procedure, pulping process, and it is azodicarbonamide to be conducive to later stage re-oxidation；During being passed through chlorine oxidation, chlorine is passed through reaction liquid level or less by conduit, contact conducive to material with chlorine, and chlorine control by stages gas flow, chlorine intake is ascending and then reduces again, conducive to the control for the conversion ratio and reaction heat for improving biruea, the utilization rate that biruea recycling prepares azodicarbonamide is improved.Drying efficiency is improved by drying system, washing drying integrated is realized by vacuum belt filter, has saved drying time；By the way that multiple U-shaped heating tubes, V-arrangement deflector are arranged in air heater, ensure that air can fully absorb heat after multiple heating tubes, the adequately heated air of output is that follow-up drying process is ready.
Description
Technical field
The present invention relates to azodicarbonamide foaming agent fields, and in particular to a kind of recycling biruea prepares two formyl of azo
The method of amine.
Background technology
Present Global steps into the epoch of a high speed development, and the continuous growth of science power has driven going out for new material
Existing, porous material becomes the research hotspot of researcher, and porous material is one kind using macromolecule as parent, formation class
It is similar to a series of interconnected or closed poromerics of reticular structure.Foamed material is a kind of porous material, in people
Too busy to get away " foam " material in the basic common life of class, the material possess that low-density lightweight, heat-proof quality be good, corrosion resistance
By force, the advantages that specific strength is high, sound insulation value is strong, has a wide range of applications in industries such as building, transport, military affairs.
With being constantly progressive for epoch, people are higher and higher for the demand of expanded material, the foaming material used in life
Material both is from industrial manufacture.The production of expanded material is required for adding certain foaming agent, therefore, selects a suitable foaming
Agent has a great impact for expanded material, selects a kind of foaming agent of high performance-price ratio critically important for industrial production.Currently, work
Widely used foaming agent is azodicarbonamide (ADC) in industry, which has gas forming amount big, decomposition product safety and environmental protection
The advantages that.
Domestic manufacturer provides the original powder total output of major part ADC foaming agents in the world, and ADC foaming agents mainly pass through oxygen
Change biruea to be made, wherein chlorine oxidation process is because its is at low cost, and technical maturity, raw material be easy to get, simple operation and other advantages, application
It is more universal.But solid waste can only be used as to handle containing a large amount of unreacted birueas in industrial production, not only caused huge
Big environmental protection pressure, and solid waste processing cost is climbed to a higher point year by year.
ADC biruea waste residues are that the intermediate biruea of condensation process in ADC production processes is remained in separating, washing
In mother liquor, the crystalline solid generated in cooling procedure, hard indissoluble easily blocks pipeline and equipment, it is necessary to periodically be cleared up, be cleared up
Biruea waste residue crystalline solid particle out is larger, and impurity is more, need to be sent to qualified fixed-end forces unit and be handled.With
The raising of environmental requirement, Solid state fermentation difficulty increases, and processing cost is also constantly promoted.
Invention content
In order to solve the problems in the existing technology, the present invention provides a kind of recycling birueas to prepare two formyl of azo
The method of amine, reduces the environmental protection treatment cost of biruea solid waste, while bringing certain economic benefit.
Technical proposal that the invention solves the above-mentioned problems is：A method of recycling biruea prepares azodicarbonamide,
Include the following steps：
1) the pulverization slurry process of biruea waste residue：The biruea waste residue that water treatment system clears is crushed to grain size
To be sent by bucket elevator after 3~5mm slurrying is further crushed into milling slurrying machine；
2) mixed processes of biruea waste residue：By crush slurrying after the blanking of biruea waste residue to geosyncline filled with hot water into
One step slurrying stirs 2~3 hours at 60~70 DEG C, it is made to be sufficiently mixed uniformly；
3) washing procedure of biruea waste residue：The biruea slurries after mixing are turned by dnockout pumps to vacuum belt filter,
It is washed with 60~70 DEG C of hot water, washing to SO4 in material2-≤ 1.00g/L, filtrate reject after washing；
4) pulping process of biruea：After biruea after washing is rinsed with tap water to water process pulping tank plus water into
Row slurrying, control solid-to-liquid ratio are 60~80:250；
5) biruea oxidation prepares azodicarbonamide process：Biruea slurries are squeezed into oxidizing reactor by dnockout pumps
In, sodium bromide is added as catalyst in stills for air blowing after the completion of dnockout, chlorine is then passed through in stills for air blowing, chlorine is by conduit
It is passed through stills for air blowing lower end, under reaction solution liquid level, control chlorine flowrate early period is 50~70m3/ h, mid-term chlorine flowrate are 140
~160m3/ h, later stage chlorine flowrate are 40~60m3/ h, in reaction process with chilled brine cooling controlling reaction temperature be 30~
40 DEG C, for control stirred tank rotating speed in 60~100r/min, the control reaction time leads to chlorine and temperature control in 2.5-3h, the process
It is controlled by DCS system, the stills for air blowing include three layers of blade and are uniformly distributed on agitating shaft；
6) the washing drying of azodicarbonamide：ADC materials from oxidation operation are delivered to vacuum belt filter through pump, according to
It is secondary by mother liquor filtering, level-one, two level, three-level water washing and press filtration area, material enter after being washed to neutrality by highly acid into
Material machine, hot-air enter stirring from dry motor spindle with suitable speed and crush hothouse, generate strong shearing to material, blow
Floating, turning effort, wet ADC particles are carried secretly by swirling eddy to be risen, and moisture content is constantly removed in uphill process, material enters pulse
Formula bag filter, moisture content to be extracted out by air-introduced machine by entrainment of warm air and is vented, and siccative passes through filter bag adsorbing and removing to pulsed
ADC is sent into sieving machine through revolving valve and is sieved by bag filter bottom, and moisture is obtained after sieving and is in 0.4wt% or less, grain size
13.3 ± 2 μm of azodicarbonamide, last ADC enter middle hopper, are sent material to finished product bin by transport system and waited for
It is further processed.
Preferably, above-mentioned washing drying process is completed using drying system, drying system includes vacuum belt filter, air
Heater, drying machine, pulsed bag filter, sieving machine, vacuum belt filter include mother liquor filtering area, one-stage water wash area, two
Grade water wash zone, three-level water wash zone, press filtration area；Vacuum belt filter entrance is connected by first pipe with oxidation operation, first pipe
It is equipped with feeding engine, the outlet of vacuum belt filter is connected by second pipe with pan feeding machine, and pan feeding machine passes through third pipeline and drying
Motor spindle is connected, and air heater gas outlet is connected by the 4th pipeline with dry motor spindle, and the 4th pipeline is equipped with air quantity tune
Valve, pressure fan are saved, drying machine outlet is connected with pulsed bag filter top, air-introduced machine and pulsed bag filter waste material
Mouth is connected by the 5th pipeline, and pulsed bag filter bottom is connected by the 6th pipeline with sieving machine, is set on the 6th pipeline
There are revolving valve, sieving machine to be connected with transport system by middle hopper；
Air heater includes heating component, shell, deflector, air inlet, gas outlet, and shell is babinet hollow structure,
Lower end blocks, upper end opening, and shell upper end is equipped with a corral plate, and the upper surface of coaming plate is concordant with shell upper surface, shell upper
Equipped with air inlet, lower part is equipped with gas outlet；Heating component includes external power interstar connection room, U-shaped heating tube, is set on external power interstar connection room
There are multiple U-shaped heating tubes, U-shaped heating tube to be uniformly distributed in X direction, the distance between two neighboring U-shaped heating tube is equal；Shell
It is internally provided with the first guiding region, the second guiding region, third guiding region, the 4th guiding region, each guiding region is respectively equipped with two groups and consolidates
Determine part, the face-to-face mirror image distribution of two groups of fixing pieces, every group of fixing piece includes two fixing pieces, and the cross sectional shape of fixing piece is L-shaped；
The cross sectional shape of deflector is V-shaped, and deflector is equipped with multigroup mounting hole, and mounting hole is uniformly distributed in X direction, two adjacent groups peace
It is equal to fill the distance between hole, every group of mounting hole includes two mounting holes；Deflector is equipped with multiple deflector holes, and deflector hole is in water
Plane is projected as circle；Deflector both ends are respectively equipped with two fixed gaps, and fixed gap is projected as rectangle horizontal plane；
It is bolted between shell and heating component, the external power interstar connection room side of being located on the shell, U-shaped heating tube is located in shell；
Deflector is located in shell, and a deflector is respectively equipped on each guiding region, and deflector passes through notch and fixing piece with shell
Cooperation is connected.
Preferably, in above-mentioned pulping process, solid-to-liquid ratio preferably 70:250.
Preferably, above-mentioned biruea oxidation is prepared in azodicarbonamide process, control chlorine flowrate early period is 60m3/
H, mid-term chlorine flowrate are 150m3/ h, later stage chlorine flowrate are 60m3/ h is cooled down control reaction with chilled brine in reaction process
Temperature is 35 DEG C.
Preferably, above-mentioned air heater air inlet is connected with air filter.
Preferably, above-mentioned 5th pipeline is equipped with volume damper.
The present invention has advantageous effect：Through pulverization slurry process, mixed processes, washing procedure, slurrying after biruea recycling
The purity of biruea is improved after process, it is azodicarbonamide to be conducive to later stage re-oxidation；During being passed through chlorine oxidation,
Chlorine is passed through reaction liquid level hereinafter, being conducive to contact of the material with chlorine by conduit, and chlorine control by stages gas flow, chlorine
Gas intake is ascending and then reduces again, is conducive to improve the control of the conversion ratio and reaction heat of biruea, improves union II
Urea recycling prepares the utilization rate of azodicarbonamide.Drying efficiency is improved by drying system, is realized by vacuum belt filter
Washing drying integrated, has saved drying time；By the way that multiple U-shaped heating tubes are arranged in air heater, ensure air
Heat can be fully absorbed after multiple heating tubes, the adequately heated air of output is that follow-up drying process is ready；
Residence time of the air in air heater is extended by the setting of V-arrangement deflector, so that air sequence is entered heating, improves
The working efficiency of entire drying process.
Description of the drawings
Fig. 1 is flow chart of the present invention.
Fig. 2 is drying system structural schematic diagram of the present invention.
Fig. 3 is air heater stereogram of the present invention.
Fig. 4 is air heater right view of the present invention.
Fig. 5 is sectional views of the Fig. 4 along the directions A-A.
Fig. 6 is heating component structural schematic diagram of the present invention.
Fig. 7 is deflector vertical view of the present invention.
In figure：1- vacuum belt filters, 2- air heaters, 3- drying machines, 4- pulsed bag filters, 5- sieving machines,
6- first pipes, 7- oxidation operations, 8- feeding engines, 9- second pipes, 10- pan feeding machines, 11- third pipelines, the 4th pipelines of 13-,
14- volume dampers, 15- air-introduced machines, the 5th pipelines of 16-, the 6th pipelines of 17-, 19- revolving valves, 20- middle hoppers, 21- conveyings
System, 22- air filters, 23- pressure fan, 120- shells, 121- heating components, 122- deflectors, 123- air inlets, 124-
Gas outlet, 125- coaming plates, 126- external power interstar connection rooms, 127-U shape heating tubes, the first guiding regions 128-, the second guiding regions 129-,
130- thirds guiding region, the 4th guiding regions 131-, 132- fixing pieces, 133- deflector holes, 134- fixed gaps, 135- mounting holes.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific implementation mode the present invention is further illustrated.
Embodiment one
The biruea waste residue that water treatment system clears is ground into after grain size is 3mm and is sent to mill by bucket elevator
Slurrying is further crushed in dusting pulp grinder；Biruea waste residue blanking to geosyncline filled with hot water after crushing slurrying is further changed
Slurry stirs 2 hours controlled at 60-70 DEG C, it is made to be sufficiently mixed uniformly；Biruea slurries after mixing are beaten by dnockout pumps
It is washed with 60-70 DEG C of hot water in vacuum belt filter, sampling analysis SO42-Content is 0.60g/L, and qualification stops washing material, washes
Wash rear filtrate reject；Biruea after washing, which is rinsed with tap water to water process pulping tank, adds water to carry out slurrying, sampling analysis
Solid-to-liquid ratio is 60:250.Biruea slurries are squeezed by dnockout pumps in oxidizing reactor, stills for air blowing include three layers of blade and uniform
10 kilograms of sodium bromides are added in stills for air blowing, chlorine is then passed through in stills for air blowing on agitating shaft for distributing installation after the completion of dnockout
Gas, chlorine are passed through stills for air blowing lower end by conduit, and under reaction solution liquid level, control chlorine flowrate early period is 50m3/ h or so, time
It it is 20 minutes, mid-term chlorine flowrate is 140m3/ h or so, time are 2.5 hours, and later stage chlorine flowrate is 60m3/ h or so, time
Be 20 minutes, in reaction process with chilled brine cooling controlling reaction temperature be 40 DEG C or so, control stirred tank rotating speed in 60r/
Min, chlorine is led in the process and temperature control is controlled by DCS system.Acid ADC after the completion of oxidation is delivered to true through pump
Blanking bar filter passes through mother liquor filtering, level-one, two level, three-level water washing and press filtration area, material and is washed by highly acid successively
Property after enter pan feeding machine, hot-air enters stirring from dry motor spindle with suitable speed and crushes hothouse, is generated to material strong
Strong shearing blows floating, turning effort, and wet ADC particles are carried secretly by swirling eddy to be risen, and moisture content is constantly removed in uphill process,
Material enters pulsed bag filter, and moisture content to be extracted out by air-introduced machine by entrainment of warm air and is vented, and siccative is adsorbed by filter bag
It is removed to pulsed bag filter bottom, ADC is sent into sieving machine through revolving valve and is sieved, the azo diformazan obtained after sieving
Amide moisture is 0.35wt%, and grain size is 11.3 μm.
Embodiment two
The biruea waste residue that water treatment system clears is ground into after grain size is 5mm and is sent to mill by bucket elevator
Slurrying is further crushed in dusting pulp grinder；Biruea waste residue blanking to geosyncline filled with hot water after crushing slurrying is further changed
Slurry stirs 3 hours controlled at 60-70 DEG C, it is made to be sufficiently mixed uniformly；Biruea slurries after mixing are beaten by dnockout pumps
It is washed with 60-70 DEG C of hot water in vacuum belt filter, sampling analysis SO42-Content is 0.60g/L, filtrate reject after washing；
Biruea after washing, which is rinsed with tap water to water process pulping tank, adds water to carry out slurrying, and sampling analysis solid-to-liquid ratio is 70:
250.Biruea slurries are squeezed by dnockout pumps in oxidizing reactor, stills for air blowing include three layers of blade and are uniformly distributed mounted on stirring
It mixes on axis, 16 kilograms of sodium bromides is added after the completion of dnockout in stills for air blowing, chlorine are then passed through in stills for air blowing, chlorine is by conduit
It is passed through stills for air blowing lower end, under reaction solution liquid level, control chlorine flowrate early period is 60m3/ h or so, time are 15 minutes, mid-term
Chlorine flowrate is 150m3/ h or so, time are 3 hours, and later stage chlorine flowrate is 60m3/ h or so, time are 20 minutes, are reacted
In journey with chilled brine cooling controlling reaction temperature be 35 DEG C or so, control stirred tank rotating speed in 80r/min, the process lead to chlorine
It controls with temperature and is controlled by DCS system.Acid ADC after the completion of oxidation is delivered to vacuum belt filter through pump, passes through successively
Mother liquor filtering, level-one, two level, three-level water washing and press filtration area are crossed, material enters pan feeding machine after being washed to neutrality by highly acid,
Hot-air enters stirring from dry motor spindle with suitable speed and crushes hothouse, generates strong shearing to material, blows floating, revolves
Use is transferred to, wet ADC particles are carried secretly by swirling eddy to be risen, and moisture content is constantly removed in uphill process, material enters pulsed cloth
Bag dust collector, moisture content to be extracted out by air-introduced machine by entrainment of warm air and is vented, and siccative passes through filter bag adsorbing and removing to pulsed cloth bag
ADC is sent into sieving machine through revolving valve and is sieved by deduster bottom, and the azodicarbonamide moisture obtained after sieving is
0.40wt%, grain size are 13.0 μm.
Embodiment 3
The biruea waste residue that water treatment system clears is ground into after grain size is 4mm and is sent to mill by bucket elevator
Slurrying is further crushed in dusting pulp grinder；Biruea waste residue blanking to geosyncline filled with hot water after crushing slurrying is further changed
Slurry stirs 2 hours controlled at 60-70 DEG C, it is made to be sufficiently mixed uniformly；Biruea slurries after mixing are beaten by dnockout pumps
It is washed with 60-70 DEG C of hot water in vacuum belt filter, sampling analysis SO42-Content is 0.80g/L, and qualification stops washing material, washes
Wash rear filtrate reject；Biruea after washing, which is rinsed with tap water to water process pulping tank, adds water to carry out slurrying, sampling analysis
Solid-to-liquid ratio is 80:250.Biruea slurries are squeezed by dnockout pumps in oxidizing reactor, stills for air blowing include three layers of blade and uniform
12 kilograms of sodium bromides are added in stills for air blowing, chlorine is then passed through in stills for air blowing on agitating shaft for distributing installation after the completion of dnockout
Gas, chlorine are passed through stills for air blowing lower end by conduit, and under reaction solution liquid level, control chlorine flowrate early period is 70m3/ h or so, time
It it is 20 minutes, mid-term chlorine flowrate is 160m3/ h or so, time are 2.5 hours, and later stage chlorine flowrate is 60m3/ h or so, time
Be 20 minutes, in reaction process with chilled brine cooling controlling reaction temperature be 30 DEG C or so, control stirred tank rotating speed in 100r/
Min, chlorine is led in the process and temperature control is controlled by DCS system.Acid ADC after the completion of oxidation is delivered to true through pump
Blanking bar filter passes through mother liquor filtering, level-one, two level, three-level water washing and press filtration area, material and is washed by highly acid successively
Property after enter pan feeding machine, hot-air enters stirring from dry motor spindle with suitable speed and crushes hothouse, is generated to material strong
Strong shearing blows floating, turning effort, and wet ADC particles are carried secretly by swirling eddy to be risen, and moisture content is constantly removed in uphill process,
Material enters pulsed bag filter, and moisture content to be extracted out by air-introduced machine by entrainment of warm air and is vented, and siccative is adsorbed by filter bag
It is removed to pulsed bag filter bottom, ADC is sent into sieving machine through revolving valve and is sieved, the azo diformazan obtained after sieving
Amide moisture is 0.30wt%, and grain size is 15 μm.
The present invention recycles biruea waste residue, not only mitigates environmental protection treatment pressure, is finally oxidized to two formyl of azo
Amine is turned waste into wealth, and has considerable economic benefit.And the azodicarbonamide high income prepared by biruea waste residue, moisture
Content is low, uniform particle sizes.
Although embodiments of the present invention are described in detail, it should be understood that, without departing from the present invention's
In the case of spirit and scope, can embodiments of the present invention be made with various changes, replacement and change.The present invention is not departed from
Conception and scope can make many other changes and remodeling.It should be appreciated that the present invention is not limited to specific embodiment, this
The range of invention is defined by the following claims.
Claims (6)
1. a kind of method that recycling biruea prepares azodicarbonamide, which is characterized in that include the following steps：
1) the pulverization slurry process of biruea waste residue：It is 3 that the biruea waste residue that water treatment system clears, which is crushed to grain size,
It is sent by bucket elevator after~5mm and further crushes slurrying into milling slurrying machine；
2) mixed processes of biruea waste residue：Biruea waste residue blanking after crushing slurrying is further to geosyncline filled with hot water
Slurrying stirs 2~3 hours at 60~70 DEG C, it is made to be sufficiently mixed uniformly；
3) washing procedure of biruea waste residue：The biruea slurries after mixing are turned by dnockout pumps to vacuum belt filter, with 60
~70 DEG C of hot water are washed, washing to SO4 in material2-≤ 1.00g/L, filtrate reject after washing；
4) pulping process of biruea：Add water system after biruea after washing is rinsed with tap water to water process pulping tank
Slurry, control solid-to-liquid ratio are 60~80:250；
5) biruea oxidation prepares azodicarbonamide process：Biruea slurries are squeezed by dnockout pumps in oxidizing reactor, are beaten
Sodium bromide is added as catalyst in stills for air blowing after the completion of material, chlorine is then passed through in stills for air blowing, chlorine is passed through by conduit
Stills for air blowing lower end, under reaction solution liquid level, control chlorine flowrate early period is 50~70m3/ h, mid-term chlorine flowrate be 140~
160m3/ h, later stage chlorine flowrate are 40~60m3/ h with chilled brine cooling controlling reaction temperature is 30~40 in reaction process
DEG C, control stirred tank rotating speed is in 60~100r/min, and the control reaction time leads to chlorine in 2.5-3h, the process and temperature control is logical
It crosses DCS system to be controlled, the stills for air blowing include three layers of blade and are uniformly distributed on agitating shaft；
6) the washing drying of azodicarbonamide：ADC materials from oxidation operation are delivered to vacuum belt filter through pump, pass through successively
Mother liquor filtering, level-one, two level, three-level water washing and press filtration area are crossed, material enters pan feeding machine after being washed to neutrality by highly acid,
Hot-air enters stirring from dry motor spindle with suitable speed and crushes hothouse, generates strong shearing to material, blows floating, revolves
Use is transferred to, wet ADC particles are carried secretly by swirling eddy to be risen, and moisture content is constantly removed in uphill process, material enters pulsed cloth
Bag dust collector, moisture content to be extracted out by air-introduced machine by entrainment of warm air and is vented, and siccative passes through filter bag adsorbing and removing to pulsed cloth bag
ADC is sent into sieving machine through revolving valve and is sieved by deduster bottom, and moisture is obtained after sieving in 0.4wt% or less, grain size 13.3
± 2 μm of azodicarbonamide, last ADC enter middle hopper, are sent material to finished product bin by transport system and waited for into one
Step processing.
2. a kind of method that recycling biruea prepares azodicarbonamide as described in claim 1, which is characterized in that the step
Rapid 6) to be completed by drying system, drying system includes vacuum belt filter, air heater, drying machine, pulsed bag-type dust
Device, sieving machine, vacuum belt filter include mother liquor filtering area, one-stage water wash area, two level water wash zone, three-level water wash zone, press filtration area；Very
Blanking bar filter entrance is connected by first pipe with oxidation operation, and first pipe is equipped with feeding engine, and the outlet of vacuum belt filter is logical
It crosses second pipe with pan feeding machine to be connected, pan feeding machine is connected by third pipeline with dry motor spindle, and air heater gas outlet is logical
It crosses the 4th pipeline with dry motor spindle to be connected, the 4th pipeline is equipped with volume damper, pressure fan, drying machine outlet and pulsed
Bag filter top is connected, and air-introduced machine is connected with pulsed bag filter waste port by the 5th pipeline, pulsed cloth bag
Deduster bottom is connected by the 6th pipeline with sieving machine, the 6th pipeline be equipped with revolving valve, sieving machine by middle hopper with
Transport system is connected；
Air heater includes heating component, shell, deflector, air inlet, gas outlet, and shell is babinet hollow structure, lower end
It blocks, upper end opening, shell upper end is equipped with a corral plate, and the upper surface of coaming plate is concordant with shell upper surface, and shell upper is equipped with
Air inlet, lower part are equipped with gas outlet；Heating component includes external power interstar connection room, U-shaped heating tube, and external power interstar connection room is equipped with more
A U-shaped heating tube, U-shaped heating tube are uniformly distributed in X direction, and the distance between two neighboring U-shaped heating tube is equal；Enclosure
Equipped with the first guiding region, the second guiding region, third guiding region, the 4th guiding region, each guiding region is respectively equipped with two groups of fixing pieces,
The face-to-face mirror image distribution of two groups of fixing pieces, every group of fixing piece includes two fixing pieces, and the cross sectional shape of fixing piece is L-shaped；Water conservancy diversion
The cross sectional shape of plate is V-shaped, and deflector is equipped with multigroup mounting hole, and mounting hole is uniformly distributed in X direction, two adjacent groups mounting hole
The distance between it is equal, every group of mounting hole includes two mounting holes；Deflector is equipped with multiple deflector holes, and deflector hole is in horizontal plane
Be projected as circle；Deflector both ends are respectively equipped with two fixed gaps, and fixed gap is projected as rectangle horizontal plane；Shell
It is bolted between heating component, the external power interstar connection room side of being located on the shell, U-shaped heating tube is located in shell；Water conservancy diversion
Plate is located in shell, and a deflector is respectively equipped on each guiding region, and deflector is coordinated with shell by notch and fixing piece
It is connected.
3. a kind of method that recycling biruea prepares azodicarbonamide as described in claim 1, which is characterized in that the system
In slurry process, solid-to-liquid ratio preferably 70:250.
4. a kind of method that recycling biruea prepares azodicarbonamide as described in claim 1, which is characterized in that described
Two Urea Peroxides are prepared in azodicarbonamide process, and control chlorine flowrate early period is 60m3/ h, mid-term chlorine flowrate are 150m3/ h,
Later stage chlorine flowrate is 60m3/ h with chilled brine cooling controlling reaction temperature is 35 DEG C in reaction process.
5. a kind of method that recycling biruea prepares azodicarbonamide as claimed in claim 2, which is characterized in that described dry
Air heater air inlet is connected with air filter in drying system.
6. a kind of method that recycling biruea prepares azodicarbonamide as claimed in claim 2, which is characterized in that described dry
The 5th pipeline is equipped with volume damper in drying system.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377833A (en) * | 2018-12-29 | 2020-07-07 | 江西世龙实业股份有限公司 | Preparation method of AC foaming agent |
| CN115960019A (en) * | 2022-12-30 | 2023-04-14 | 江苏索普化工股份有限公司 | Method for treating ADC foaming agent condensation mother liquor |
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| US6844473B1 (en) * | 2004-02-18 | 2005-01-18 | Bwxt Pantex, L.L.C. | Continuous aspiration process for manufacture of ultra-fine particle HNS |
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| CN104817478A (en) * | 2015-04-15 | 2015-08-05 | 江苏索普（集团）有限公司 | Method for recovering biurea and preparing azodicarbonamide |
| CN106524726A (en) * | 2015-11-05 | 2017-03-22 | 重庆汇东生物科技有限公司 | Pneumatic drying machine |
| CN106524727A (en) * | 2015-11-05 | 2017-03-22 | 重庆汇东生物科技有限公司 | Tower type airflow cyclone dryer |
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| CN111377833A (en) * | 2018-12-29 | 2020-07-07 | 江西世龙实业股份有限公司 | Preparation method of AC foaming agent |
| CN111377833B (en) * | 2018-12-29 | 2022-05-20 | 江西世龙实业股份有限公司 | Preparation method of AC foaming agent |
| CN115960019A (en) * | 2022-12-30 | 2023-04-14 | 江苏索普化工股份有限公司 | Method for treating ADC foaming agent condensation mother liquor |
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| CN108314632B (en) | 2021-02-05 |
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