CN107987238A - A kind of cooperating type urea-formaldehyde resin adhesive continuous production system and production method - Google Patents
A kind of cooperating type urea-formaldehyde resin adhesive continuous production system and production method Download PDFInfo
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- CN107987238A CN107987238A CN201810106407.0A CN201810106407A CN107987238A CN 107987238 A CN107987238 A CN 107987238A CN 201810106407 A CN201810106407 A CN 201810106407A CN 107987238 A CN107987238 A CN 107987238A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C09J161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic compounds
Abstract
The invention discloses a kind of cooperating type urea-formaldehyde resin adhesive continuous production system and production method.The production system includes the universal reactor of some levels, level-one balanced reaction device, two level balanced reaction device and product reservoir；The universal reactor is connected with level-one balanced reaction device again after being sequentially connected in series, and level-one balanced reaction device is connected with two level balanced reaction device, and two level balanced reaction device is connected by material-handling pump with product reservoir；Connected between the universal reactor and level-one balanced reaction device by material-handling pump；Material-handling pump and accelerating reactor are also connected with turn between the adjacent universal reactor.The present invention carries out in completely closed environment, without any discharge of poisonous waste, reaction process is automatically performed by machine completely, act synergistically between multiple universal reactors, accelerating reactor and balanced reaction device, ensure the quick and complete reaction of each raw material, make product serialization, it is disposable complete, use manpower and material resources sparingly, to purify production environment, the market competitiveness very big.
Description
Technical field
The present invention relates to a kind of cooperating type urea-formaldehyde resin adhesive continuous production system and production method, belongs to chemical industry life
Produce technical field.
Background technology
Lauxite was synthesized first in 1844 by B.Tollens, grinding in C.Goldschmidt et al. before and after 1896
Used first after studying carefully, nineteen twenty-nine IG company develop be named as Kanrit Leim simultaneously can be in the ureaformaldehyde tree of normal temperature cure veneer(ed) wood
Fat is condensed intermediate, attracts people's attention.Since Lauxite has, initial bond strenght is good, quick solidifying, of light color, not dirty
Contaminate timber, the advantages that bonding strength is high, easy to use, glued board, particieboard, medium density fibre board (MDF), wood-based plate secondary operation,
Paper products, fibre, interior decoration etc. are widely used, and are the kinds of yield maximum in current adhesive,
More than the 80% of wood adhesive total output is accounted for, is cheapest in synthetic resin, there are other glue kinds to be difficult to the competition substituted
Power.Since nineteen twenty-nine urea-formaldehyde resin adhesive is used as first Patent Publication of plywood jelly, the consumption of urea-formaldehyde resin adhesive
It is maximum in always all adhesive.It is reported that the glued board of Japan 80%, 100% particieboard, the particieboard of Germany 75%,
The particieboard of Britain 100% uses urea-formaldehyde resin adhesive, and the consumption of China's wood industry urea-formaldehyde glue is doubled and redoubled every year.
Timber industry plays an important role in the economy of country.China's timber per Year's consumption up to 2.5 billion cubic meters,
It is 1.5 hundred million tons equivalent, equivalent to China's steel and the summation of plastics annual consumption.As world economy is from industrialization society to ecology
Change social development, timber industry faces the significant problems such as resource scarcity, environmental protection, but is also the efficient people for utilizing timber resources
Make plate industry and bring new chance and challenge.In recent years, China's wood-based plate industrial boom, yield quickly increase, 2002
Second place of the world, wherein fiberboard are leapt to（Including medium density fibre board (MDF)）Yield occupies first, and glued board yield occupies the 3rd,
As Wood-based Panel Production big country.With the growth of wood-based plate yield and the change of breed structure, the adhesive to match therewith is in
Reveal vitality, developed rapidly.It was predicted that the demand of all kinds of adhesive in China is every year by with the speed higher than 10%
Increase, and the Lauxite yield of dosage maximum will rise to upper in 2017 by 132.0 ten thousand in 2004 tons in timber industry
Ten million ton.Existing traditional handicraft is mainly divided using urea after formaldehyde is adjusted pH and heating with sodium hydroxide in same reaction kettle
Batch adds, and then obtains product by way of constantly heat up cooling and adjusting pH.But traditional processing technology and production
There are following main problem for equipment：（1）Environmental pollution：Using in traditional handicraft and equipment production process, it is necessary to manually adjust
PH and test reaction terminal are saved, a large amount of unreacted formaldehyde is inevitably discharged, environment is caused seriously to pollute.This is tradition
Main pollution source in production process.（2）High energy consumption, low yield.Electricity, heat, water loss are larger in traditional production technique, cause
High energy consumption；Simultaneously as whole process carries out in non-close environment, effluent is more, that is, pollute environment causes yield to drop again
It is low.（3）Different batches of product difference in quality is big.Due to being differed using batch production, control of reaction end point, each batch products
Difference in quality is larger.（4）Production process is difficult to control.Due to reaction process influenced by acid-base value and temperature it is very big, and very
Sensitivity, the extent of reaction and production process are difficult to control, and are easily produced gel or are reacted situations such as not reaching requirement, have impact on product
Quality.（5）Production process is cumbersome, and worker's amount of labour is big.Since charging, process control are finished artificially, so, user of service
More, the amount of labour is big.（6）Different product can not be completed at the same time.Due to, it is necessary to kind is more, thus being needed in wood production process
Lauxite species it is also more, batch production mode, which switches kind, to be needed to complete using distinct device.It is in addition, traditional
The product of technique productions particularly in environmental consciousness and requires increasingly there are the shortcomings that water resistance, resistance to ag(e)ing and poor toughness
Today of raising, traditional handicraft product largely escape free formaldehyde in the production and use process, pollute environment, it will seriously
Restrict and limit the use of the product.With resident to environmental protection and safety problem attention, existing urea-formaldehyde resin adhesive
The mode of production have received using limitation, in order to keep the normal development of wood industry, it is necessary to carry out technological innovation.
The content of the invention
For problems of the prior art, the present invention provides a kind of continuous metaplasia of cooperating type urea-formaldehyde resin adhesive
Production system and production method.
The present invention uses following technical scheme：
A kind of cooperating type urea-formaldehyde resin adhesive continuous production system, including the universal reactor of some levels, level-one balance are anti-
Answer device 4, two level balanced reaction device 5 and product reservoir 6；The universal reactor be sequentially connected in series after again with level-one balanced reaction
Device 4 connects, level-one balanced reaction device 4 is connected with two level balanced reaction device 5, two level balanced reaction device 5 by material-handling pump 7 with
Product reservoir 6 connects；Connected between the universal reactor and level-one balanced reaction device 4 by material-handling pump 7；It is described
Material-handling pump 7 and accelerating reactor are also connected with turn between adjacent universal reactor.
Preferably, the universal reactor is 3, is respectively the universal reactor 1 of level-one, the universal reactor of two level
2nd, the universal reactor 1 of the universal reactor 3 of three-level, wherein level-one configures and sends reactor for total material.
Preferably, the universal reactor is full automatic atmospheric reaction kettle, equipped with blender, pH controllers, temperature control
Device processed, return channel, automatic feeding device.
The universal reactor 2 of the two level, the universal reactor 3 of three-level are equipped with viscosity controller.
The accelerating reactor and level-one balanced reaction device 4 are pipeline reactor, its main body is a container 12, container 12
Both ends are respectively equipped with feed pipe 13 and discharge nozzle 14, and feed pipe 13 and discharge nozzle 14 are straight pipeline；13 He of feed pipe
By some identical S-type connections of straight pipeline elbow between discharge nozzle 14, pipe is also fixed with every straight pipeline
Road blender 10；The elbow is fixedly connected with straight pipeline junction using anti-corrosion pad, and container 12 is straight with S-type connection
Filled between type pipeline with oil bath, the inner cavity of container 12 is equipped with the temperature controller of control oil bath temperature.
The pipe stirrer 10 is made of the central axis along straight pipeline successively staggered arc-like sheet 11.
The straight pipeline internal diameter is 10mm ~ 100mm, and the length of single straight type pipe is 400mm ~ 4000mm, straight type tube wall
Thick 2mm ~ 6mm.
The straight pipeline is stainless steel, aluminium nitride, aluminium oxide, carborundum or the silicon nitride material pipe of inside lining anti-corrosive material
Road.
The accelerating reactor includes at least level-one accelerating reactor 8, two level accelerating reactor 9.
The two level balanced reaction device 5 is full automatic atmospheric reaction kettle, equipped with blender, pH controllers, temperature controller
And viscosity controller.
The material-handling pump 7 is anti-corrosion frequency conversion material self priming pump, and the flow of pump is 10 ~ 15m3/ h, lift are 15 ~ 40m,
Bore is 10 ~ 100mm, and power of motor is 1.0 ~ 3.0KW, and suction lift is 2 ~ 4m.
A kind of production method using above-mentioned cooperating type urea-formaldehyde resin adhesive continuous production system, it includes following
Step：
（1）It is universal that formaldehyde, urea and additive according to the molar ratio of molar ratio 2.1 ~ 2.7/1/0 ~ 0.042 are added to level-one
15 ~ 20 min of hybrid reaction in reactor 1, temperature control is at 90-95 DEG C, and speed of agitator is 20 revs/min ~ 100 revs/min, then
PH 8.0 ~ 10.0 is adjusted with 30% sodium hydroxide solution；The liquid in the universal reactor 1 of level-one is passed through after regulating pH
Material-handling pump 7 is continuously injected into level-one accelerating reactor 8, and reaction generation first order reaction liquid, reaction are carried out at 90-100 DEG C
Time is 30 seconds ~ 60 seconds；
（2）Above-mentioned first order reaction liquid is continuously injected into the universal reactor 2 of two level, then adds urea so that two level
Formaldehyde/urea molar ratio is maintained at 1.65 ~ 1.83/1 in universal reactor 2, is kept with mixing acid for adjusting pH to 4.0-5.5,
For temperature control at 80-90 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, after 8 ~ 10min of reaction that above-mentioned two level is universal anti-
Answer liquid in device 2 to be injected into by material-handling pump 7 in two level accelerating reactor 9, it is anti-that reaction generation two level is carried out at 80-90 DEG C
Liquid is answered, the reaction time is 30 seconds ~ 60 seconds；
（3）Step（2）Obtained second order reaction liquid is continuously injected into the universal reactor 3 of three-level, is added urea and is caused three-level
Formaldehyde/urea molar ratio is maintained at 1 ~ 1.3/1 in general reactor 3, is kept with mixing acid for adjusting pH to 6.0-6.5, temperature control
For system at 85-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, by liquid in the universal reactor 3 of three-level after 8 ~ 10min of reaction
It is continuously injected into by material-handling pump 7 in level-one balanced reaction device 4, reaction generation third-order reaction liquid is carried out at 90-100 DEG C,
Reaction time is 30 seconds ~ 60 seconds；
（4）Third-order reaction liquid made from above-mentioned steps 3 is continuously injected into two level balanced reaction device 5, adds urea, additive
So that formaldehyde/urea/additive molar ratio remains to 1.00 ~ 1.05/1/0 ~ 0.032 in two level balanced reaction device 5, hydroxide is used
Sodium adjust pH, and keep to 7.0-8.0, temperature control at 85-95 DEG C, reaction 3 ~ after five minutes by liquid in two level balanced reaction device 5
Body is cooled to 45 DEG C, is conveyed by material-handling pump 7 and is sent in conveying after pipeline cools down in product reservoir 6 i.e.
Can.
The mixed acid for being used to adjust pH is one or more of formic acid, acetic acid, phosphoric acid, sulfuric acid, hydrochloric acid, ammonium chloride.
, can be by increasing universal reactor, accelerating reactor and balance reactor number according to product processes needs
Amount infinitely expands the system.
The beneficial effects of the invention are as follows：
（1）Environmental protection, cleaning.Carried out completely in enclosed environment, there is no any discharge of poisonous waste in production process；Production environment
Close friend, without any peculiar smell.
（2）Greatly reduce energy consumption.For reaction process without cooling down repeatedly or heating up, heat demand changes smaller, production process
Power consumption is few.
（3）Reaction process is easy to control.Reaction process is automatically performed by machine completely, phenomena such as being less prone to gel, production
Product qualification rate, remarkable in economical benefits improve；The speed increase of addition stage generation monomethylolurea, dimethylol urea, generation three
Methylolurea or tatramethylol urea can realize control；Using multistage general reactor, accelerating reactor and balance reactor
The advantages of acting synergistically, giving full play to different reactor, wherein general reactor makes the preliminary hybrid reaction of each material, then one
By accelerating reactors at different levels under constant temperature degree, pressure, so as to fulfill the purpose of fast reaction, accelerating reactor can make reaction fast
Degree improves more than 10-20 times；Finally accelerate to be directly entered two-stage balanced reactor after the completion of reaction, balanced reaction device plays buffering
With the effect of in-depth reaction, it is ensured that the reaction was complete for raw material, and product meets standard, and is ultimately delivered in reservoir；A variety of reactors
Between act synergistically, while each stage reactor automatically controls terminal with machine, very convenient, greatly saves labour and reduces anti-
Between seasonable, production efficiency is improved.
（4）Production process serialization, target level of product quality are completely the same.Multiple universal reactors of the present invention, acceleration
Act synergistically between reactor and balanced reaction device, ensure the complete fast reaction of each raw material, product is disposably completed, without
It is disconnected, automatically control.The product of different quality requirement and kind can be produced at the same time.It not parking can replace and produce kind, in equipment
Retain surplus material, can auto-returned charging device, ensure that material makes full use of.
（5）Greatly save space.Equipment occupation space is minimum, and utilization rate is high.
（6）The urea-formaldehyde resin adhesive continuous production technical matters of the present invention is finer, tight since production process controls,
Manpower, resource and space are saved, it is more competitive.
Brief description of the drawings
Fig. 1, production system flow chart of the present invention；Wherein 1 is the universal reactor of level-one, and 2 be the universal reactor of two level,
3 be the universal reactor of three-level, and 4 be level-one balanced reaction device, and 5 be two level balanced reaction device, and 6 be product reservoir, and 7 be material
Delivery pump, 8 be level-one accelerating reactor, and 9 be two level accelerating reactor.
Fig. 2, accelerating reactor or level-one balanced reaction device stereogram, wherein 12 be container, 13 be feed pipe, and 14 be discharge nozzle.
Fig. 3, accelerating reactor or level-one balanced reaction device side view.
The CC profiles of Fig. 4, Fig. 3.
Fig. 5, accelerating reactor or level-one balanced reaction device internal pipeline connection figure.
Pipe stirrer in Fig. 6, accelerating reactor or level-one balanced reaction device, 11 be arc-like sheet.
Embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1
A kind of cooperating type urea-formaldehyde resin adhesive continuous production system, as shown in Figure 1, it be by the universal reactor 1 of level-one,
The universal reactor 2 of two level, the universal reactor 3 of three-level, level-one balanced reaction device 4, two level balanced reaction device 5 and product storage
Device 6 is mutually sequentially connected composition；Wherein also it is connected with turn between the universal reactor 1 of level-one and the universal reactor 2 of two level
Material-handling pump 7 and level-one accelerating reactor 8, similarly, between the universal reactor 2 of two level and the universal reactor 3 of three-level
Also material-handling pump 7 and two level accelerating reactor 9 are connected with, is connected after the universal reactor 3 of three-level by material-handling pump 7
To level-one balanced reaction device 4, then 4 discharge port of level-one balanced reaction device is connected to two level balanced reaction device 5, is balanced by two level anti-
The material that should be handled is conveyed by material-handling pump 7 and is sent into after pipeline cools down in product reservoir 6.
Above-mentioned universal reactor is full automatic atmospheric reaction kettle, equipped with blender, pH controllers, temperature controller,
Return channel, automatic feeding device.
For above-mentioned universal reactor in addition to the universal reactor 1 of level-one, the universal reactor 2 of two level, three-level are universal anti-
Answer device 3 to be equipped with viscosity controller, viscosity controller here mainly the material viscosity in reactor is played detection in real time and
Monitoring acts on, easy to emergency processing.
The accelerating reactor and level-one balanced reaction device 4 are pipeline reactor, its main body is a container 12, container 12
Both ends are respectively equipped with feed pipe 13 and discharge nozzle 14, and feed pipe 13 and discharge nozzle 14 are straight pipeline；13 He of feed pipe
By some identical S-type connections of straight pipeline elbow between discharge nozzle 14, pipe is also fixed with every straight pipeline
Road blender 10；The elbow is fixedly connected with straight pipeline junction using anti-corrosion pad, and container 12 is straight with S-type connection
Filled between type pipeline with oil bath, the inner cavity of container 12 is equipped with the temperature controller of control oil bath temperature.
The pipe stirrer 10 is made of the central axis along straight pipeline successively staggered arc-like sheet 11.
The straight pipeline internal diameter is 10mm ~ 100mm, and the length of single straight type pipe is 400mm ~ 4000mm, straight type tube wall
Thick 2mm ~ 6mm.
The straight pipeline is stainless steel, aluminium nitride, aluminium oxide, carborundum or the silicon nitride material pipe of inside lining anti-corrosive material
Road.
The accelerating reactor includes at least level-one accelerating reactor 8, two level accelerating reactor 9.
The two level balanced reaction device 5 is full automatic atmospheric reaction kettle, equipped with blender, pH controllers, temperature controller
And viscosity controller, viscosity controller here is also mainly that detection in real time and monitoring work are played to the material viscosity in reactor
With easy to emergency processing.
The material-handling pump 7 is anti-corrosion frequency conversion material self priming pump, and the flow of pump is 10 ~ 15m3/ h, lift are 15 ~ 40m,
Bore is 10 ~ 100mm, and power of motor is 1.0 ~ 3.0KW, and suction lift is 2 ~ 4m.
Preferably, pipeline used in accelerating reactor of the invention is the stainless steel tube of inside lining anti-corrosive material, and level-one balance is anti-
Device is answered to use carborundum tube.Used by level-one accelerating reactor, two level accelerating reactor and level-one balanced reaction device in pipeline
Footpath changes greatly, and constant interval is 20 ~ 60%.
Embodiment 2
When being used to prepare Lauxite using the production system of the embodiment of the present invention 1, its specific production method is as follows：
37% formaldehyde/urea is pressed into proportionings of the mol than 2.7/1, injects 15 ~ 20min of hybrid reaction in the universal reactor 1 of level-one,
For temperature control at 90 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min.Then PH to 8.0- is adjusted with 30% sodium hydrate aqueous solution
10, friction feeding is opened after regulating pH, opens each material transmission pump and subsequent stages reactor.Mixed liquor is passed through into level-one thing
Material conveying pump is continuously injected into level-one accelerating reactor 8, and 30 ~ 60 seconds generation first order reaction liquid of reaction is carried out at 90-100 DEG C；
Reaction solution is injected into the universal reactor 2 of two level, adds urea so that formaldehyde/urea in the universal reactor 2 of two level
Mol ratios reach 1.8/1, and PH to 4.5-5.0 is adjusted with mixed acid, temperature control at 85-90 DEG C, speed of agitator for 20 revs/min ~
100 revs/min, liquid in the universal reactor 2 of two level is continuously injected into two level accelerating reactor 9 after reacting 8 ~ 10min,
80-90 DEG C carries out 30 ~ 60 seconds generation second order reaction liquid of reaction, and second order reaction liquid is injected into the universal reactor 3 of three-level, adds
Urea make it that formaldehyde/urea mol ratios reach 1.3/1 in the universal reactor 3 of three-level, and PH to 6.0-6.5, temperature are adjusted with mixed acid
At 85-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min for degree control, by the universal reactor 3 of three-level after 8 ~ 10min of reaction
Liquid is continuously injected into level-one balanced reaction device 4, carried out at 90-100 DEG C reaction 30 seconds ~ 60 seconds generation third-order reaction liquid, three
Order reaction liquid is entered in two level balanced reaction device 5, is added urea and make it that formaldehyde/urea mol is than protecting in two level balanced reaction device 5
Hold 1.05/1, adjust PH with sodium hydroxide and keep to 7.0-8.0, temperature control is at 85-95 DEG C, by two level balanced reaction device 5
Middle liquid, is pumped, pipeline cooling by material-handling pump, is injected into product reservoir 6（45 DEG C are cooled in course of conveying）
.Obtained product meets Lauxite technical requirements in GB/T14732-2006, and plate burst size of methanal reaches E0 grades
It is horizontal.
Embodiment 3
When being used to prepare Lauxite using the production system of the embodiment of the present invention 1, its specific production method is as follows：
37% formaldehyde/urea/melamine is mixed by proportionings of the mol than 2.3/1/0.022 in the universal reactor 1 of level-one
React 15 ~ 20min, for temperature control at 90-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, with 30% aqueous slkali adjust PH to
8 ~ 10.0, liquid in the universal reactor 1 of level-one is continuously injected into level-one accelerating reactor 8 after regulating pH（Meanwhile beat
Open subsequent stages reaction unit）, 30 seconds ~ 60 seconds generation first order reaction liquid of reaction is carried out at 90-100 DEG C；First order reaction liquid injects
Into the universal reactor 2 of two level, urea is added so that formaldehyde/urea mol ratios reach 1.65/ in the universal reactor 2 of two level
1, PH to 4.7-5.5 is adjusted with mixed acid, for temperature control at 80-85 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, reaction 8 ~
Liquid in reactor is injected into two level accelerating reactor 9 after 10min, reaction generation two in 30 seconds ~ 60 seconds is carried out at 80-90 DEG C
Order reaction liquid：Second order reaction liquid is entered in the universal reactor 3 of three-level, is added urea and is caused in the universal reactor 3 of three-level
Formaldehyde/urea mol ratios reach 1.15/1, adjust PH to 6.0-6.5 with mixed acid, temperature control is in 85-95 DEG C, speed of agitator
20 revs/min ~ 100 revs/min, liquid in the universal reactor 3 of three-level is injected into level-one balanced reaction device 4 after reacting 8 ~ 10min
In, 30 seconds ~ 60 seconds generation third-order reaction liquid of reaction is carried out at 90-100 DEG C：Third-order reaction liquid enters two level balanced reaction device 5
In, add urea, melamine causes formaldehyde/urea in two level balanced reaction device 5/melamine mol ratios to reach 1.05/1/
0.032, with alkali adjust PH to 7.0-8.0, temperature control at 85-95 DEG C, reaction 3 ~ after five minutes by two level balanced reaction device 5
Fluid pipeline（It is cooled to 45 DEG C）It is continuously injected into product reservoir 6.Obtained product meets GB/T14732-2006
Middle Lauxite technical requirements, plate burst size of methanal reach E0 grades of levels.
Embodiment 4
37% formaldehyde/urea/melamine is mixed by proportionings of the mol than 2.1/1/0.042 in the universal reactor 1 of level-one
React 15 ~ 20min, for temperature control at 90-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, then with 30% sodium hydroxide
Solution adjusts pH 8.0 ~ 10.0；Regulate and liquid in the universal reactor 1 of level-one is continuously injected into level-one after pH accelerates reaction
In device 8（Meanwhile subsequent reactions device is fully open）, 30 seconds ~ 60 seconds generation first order reaction liquid of reaction is carried out at 90-100 DEG C；One
Order reaction liquid is entered in the universal reactor 2 of two level, adds urea so that formaldehyde/urea in the universal reactor 2 of two level
Mol ratios reach 1.83/1, and PH to 4.0-4.6 is adjusted with mixed acid, temperature control at 85-90 DEG C, speed of agitator for 20 revs/min ~
100 revs/min, liquid in the universal reactor 2 of two level is injected into two level accelerating reactor 9 after reacting 8 ~ 10min, in 80-90
DEG C carry out 30 seconds ~ 60 seconds generation second order reaction liquid of reaction：Second order reaction liquid is entered in the universal reactor 3 of three-level, adds urine
Element make it that formaldehyde/urea/melamine mol ratios reach 1.28/1/0.085 in the universal reactor 3 of three-level, are adjusted with mixed acid
PH to 6.0-6.5, for temperature control at 85-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, by three-level after 8 ~ 10min of reaction
Liquid is continuously entered in level-one balanced reaction device 4 by infusion pump in universal reactor 3, and reaction 30 is carried out at 90-100 DEG C
Second ~ 60 seconds generation third-order reaction liquid：Third-order reaction liquid is entered in two level balanced reaction device 5, is added urea, melamine, is made
Obtain formaldehyde/urea/additive molar ratio in reactor and reach 1.00/1/0.032, PH to 7.0-8.0, temperature are adjusted with sodium hydroxide
Degree control is at 85-95 DEG C, reaction 3 ~ liquid in two level balanced reaction device 5 is passed through pipeline after five minutes（It is cooled to 45 DEG C）Continuously
It is injected into product reservoir 6.Obtained product meets Lauxite technical requirements in GB/T14732-2006, plate
Burst size of methanal reaches E0 grades of levels.
The traditional handicraft of Lauxite production is after formaldehyde sodium hydroxide is adjusted pH and heating in same reaction kettle
Urea adds in batches, then obtains urea-formaldehyde resin adhesive product by way of constantly heat up cooling and adjusting pH.Adopt
Every energy consumption and equipment using the present invention and work needed for the urea-formaldehyde resin adhesive of above-mentioned conventionally produced identical yield
The contrast of skill is as shown in table 1 below.
1 traditional handicraft of table and energy consumption comparison result of the present invention
| Yield（Ton） | Power consumption（Degree） | Free formaldehyde content（%） | Equipment and human cost（Member） | Product qualification rate（%） | |
| Traditional handicraft | 1 | 15-20 | 0.773 | 50-80 | 90-98 |
| The present invention | 1 | 5-13 | 0.032 | 10-30 | 100 |
It can be drawn by the Comparative result in above-mentioned table 1, compared with traditional handicraft, production system and production that the present invention uses
No matter method prepares same amount of urea-formaldehyde resin adhesive in power consumption, equipment and human cost and product qualification rate, product
Uniformity in terms of all there is obvious advantage, and prepared urea-formaldehyde glue free formaldehyde content is low, complies fully with existing ring
The theory of production is protected, there is great application and popularization value.In addition, the Lauxite gluing of the apparatus and method production of the present invention
Compared with traditional handicraft product, its water resistance, resistance to ag(e)ing, toughness and splitting etc. are also significantly better than traditional product for agent.
Claims (13)
1. a kind of cooperating type urea-formaldehyde resin adhesive continuous production system, it is characterised in that including the universal reaction of some levels
Device, level-one balanced reaction device（4）, two level balanced reaction device（5）With product reservoir（6）；The universal reactor is gone here and there successively
After connection again with level-one balanced reaction device（4）Connection, level-one balanced reaction device（4）With two level balanced reaction device（5）Connection, two level are put down
Weigh reactor（5）Pass through material-handling pump（7）With product reservoir（6）Connection；The universal reactor and level-one balance are anti-
Answer device（4）Between pass through material-handling pump（7）Connection；It is defeated that material is also connected with turn between the adjacent universal reactor
Send pump（7）And accelerating reactor.
2. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 1, it is characterised in that described logical
It is 3 with type reactor, is respectively the universal reactor of level-one（1）, the universal reactor of two level（2）, the universal reaction of three-level
Device（3）, the wherein universal reactor of level-one（1）Reactor is configured and sent for total material.
3. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 2, it is characterised in that described logical
It is full automatic atmospheric reaction kettle with type reactor, equipped with blender, pH controllers, temperature controller, return channel, auto feed dress
Put.
4. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 2, it is characterised in that described two
The universal reactor of level（2）, the universal reactor of three-level（3）It is equipped with viscosity controller.
5. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 1, it is characterised in that described to add
Fast reactor and level-one balanced reaction device（4）It is pipeline reactor, its main body is a container（12）, container（12）Distinguish at both ends
Equipped with feed pipe（13）And discharge nozzle（14）, feed pipe（13）And discharge nozzle（14）It is straight pipeline；The feed pipe（13）
And discharge nozzle（14）Between by some identical S-type connections of straight pipeline elbow, also fixation is set in every straight pipeline
There is pipe stirrer（10）；The elbow is fixedly connected with straight pipeline junction using anti-corrosion pad, container（12）With it is S-type
Filled between the straight pipeline of connection with oil bath, container（12）Inner cavity be equipped with control oil bath temperature temperature controller.
6. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 1, it is characterised in that the pipe
Road blender（10）It is by the central axis along straight pipeline successively staggered arc-like sheet（11）Form.
7. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 5, it is characterised in that described straight
Type internal diameter of the pipeline is 10mm ~ 100mm, and the length of single straight type pipe is 400mm ~ 4000mm, straight type thickness of pipe wall 2mm ~ 6mm；It is described
Straight type pipe caliber is less than the straight type pipe caliber in level-one balanced reaction device in accelerating reactor.
8. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 5, it is characterised in that described straight
Type pipeline is stainless steel, aluminium nitride, aluminium oxide, carborundum or the silicon nitride material pipeline of inside lining anti-corrosive material.
9. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 5, it is characterised in that described to add
Fast reactor includes at least level-one accelerating reactor（8）, two level accelerating reactor（9）.
10. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 1, it is characterised in that described
Two level balanced reaction device（5）For full automatic atmospheric reaction kettle, controlled equipped with blender, pH controllers, temperature controller and viscosity
Device.
11. cooperating type urea-formaldehyde resin adhesive continuous production system according to claim 1, it is characterised in that described
Material-handling pump（7）For anti-corrosion frequency conversion material self priming pump, the flow of pump is 10 ~ 15m3/ h, lift are 15 ~ 40m, bore for 10 ~
100mm, power of motor are 1.0 ~ 3.0KW, and suction lift is 2 ~ 4m.
12. a kind of cooperating type urea-formaldehyde resin adhesive continuous production system using any one of claim 1-11
Production method, it is characterised in that it comprises the following steps：
（1）It is universal that formaldehyde, urea and additive according to the molar ratio of molar ratio 2.1 ~ 2.7/1/0 ~ 0.042 are added to level-one
Reactor（1）Middle 15 ~ 20 min of hybrid reaction, temperature control is at 90-95 DEG C, and speed of agitator is 20 revs/min ~ 100 revs/min, so
Afterwards pH 8.0 ~ 10.0 is adjusted with 30% sodium hydroxide solution；Regulate the universal reactor of level-one after pH（1）In liquid
Pass through material-handling pump（7）It is continuously injected into level-one accelerating reactor（8）In, reaction generation first order reaction is carried out at 90-100 DEG C
Liquid, reaction time are 30 seconds ~ 60 seconds；
（2）Above-mentioned first order reaction liquid is continuously injected into the universal reactor of two level（2）In, then add urea so that two
The universal reactor of level（2）Middle formaldehyde/urea molar ratio is maintained at 1.65 ~ 1.83/1, is kept with mixing acid for adjusting pH to 4.0-
5.5, for temperature control at 80-90 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min, after 8 ~ 10min of reaction that above-mentioned two level is general
Type reactor（2）Middle liquid passes through material-handling pump（7）It is injected into two level accelerating reactor（9）In, reacted at 80-90 DEG C
Second order reaction liquid is generated, the reaction time is 30 seconds ~ 60 seconds；
（3）Step（2）Obtained second order reaction liquid is continuously injected into the universal reactor of three-level（3）In, add urea and cause three
The general reactor of level（3）Middle formaldehyde/urea molar ratio is maintained at 1 ~ 1.3/1, is kept with mixing acid for adjusting pH to 6.0-6.5, temperature
At 85-95 DEG C, speed of agitator is 20 revs/min ~ 100 revs/min for degree control, by the universal reactor of three-level after 8 ~ 10min of reaction（3）
Middle liquid passes through material-handling pump（7）It is continuously injected into level-one balanced reaction device（4）In, reaction generation three is carried out at 90-100 DEG C
Order reaction liquid, reaction time are 30 seconds ~ 60 seconds；
（4）By above-mentioned steps（3）Obtained third-order reaction liquid is continuously injected into two level balanced reaction device（5）In, add urea, add
Agent is added to cause two level balanced reaction device（5）Middle formaldehyde/urea/additive molar ratio remains to 1.00 ~ 1.05/1/0 ~ 0.032, uses
Sodium hydroxide adjust pH, and keep to 7.0-8.0, temperature control at 85-95 DEG C, reaction 3 ~ after five minutes by two level balanced reaction
Device（5）Middle liquid passes through material-handling pump（7）Convey and be sent to product reservoir after pipeline cools down in conveying（6）In i.e.
Can.
13. the production method according to claim 12 using cooperating type urea-formaldehyde resin adhesive continuous production system,
It is characterized in that, it is described be used to adjusting the mixed acid of pH in formic acid, acetic acid, phosphoric acid, sulfuric acid, hydrochloric acid, ammonium chloride it is a kind of with
On.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111203160A (en) * | 2020-01-18 | 2020-05-29 | 上海贝辉木业有限公司 | System of glue production system |
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