CN102887986A - Material cooling method and device for use in production process of aqueous polyurethane adhesive - Google Patents
Material cooling method and device for use in production process of aqueous polyurethane adhesive Download PDFInfo
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- CN102887986A CN102887986A CN2011102060516A CN201110206051A CN102887986A CN 102887986 A CN102887986 A CN 102887986A CN 2011102060516 A CN2011102060516 A CN 2011102060516A CN 201110206051 A CN201110206051 A CN 201110206051A CN 102887986 A CN102887986 A CN 102887986A
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- solvent
- polyurethane adhesive
- production process
- water
- based polyurethane
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Abstract
The invention discloses a material cooling method and a device for use in the production process of an aqueous polyurethane adhesive. A solvent circulating reflux condenser is arranged outside an aqueous polyurethane adhesive production reaction kettle; and the reflux condenser is communicated with a reaction kettle space through an input pipeline and an output pipeline. When prepolymerization reaction time is reached in the production process of the aqueous polyurethane adhesive, a solvent is added into the reaction kettle according to process requirements no matter the material temperature is lowered to a required temperature, the reflux condenser is opened, and the material temperature is lowered effectively through continuous circular running of solvent inflow, evaporation of the solvent into steam by absorbing heat, outflow of solvent steam for carrying away material heat, and inflow of solvent by condensing, so that smooth performance of the production process of the aqueous polyurethane adhesive is ensured. The device has the characteristics of simple structure, convenience in using and reliable effect.
Description
Technical field
The present invention relates to material cool-down method and the device of a kind of water-based polyurethane adhesive production method and device, particularly a kind of water-based polyurethane adhesive production process.
Background technology
In the water-based polyurethane adhesive production process, prepolymerization reaction is to the later stage, along with the carrying out of reaction, the polyurethane molecular chain is more and more longer, and material viscosity is more and more higher, and material conducts heat and becomes more and more difficult, temperature of charge is constantly risen, namely use the cold water cooling, also be difficult to temperature of charge is lowered.As arriving in the reaction times, temperature of charge still can fall, and can induce reaction excessively, finally causes product rejection.At present, a kind of known water-based polyurethane adhesive production process material cool-down method and isolated plant reliable for effect are not also arranged.
Summary of the invention
The purpose of this invention is to provide a kind of water-based polyurethane adhesive production process material cool-down method and device simple and convenient, reliable for effect.
Technical scheme of the present invention is: outside water-based polyurethane adhesive is produced reactor a solvent cycle reflux exchanger is set, reflux exchanger is communicated with the reactor space by input channel and output channel.The prepolymerization reaction time then no matter whether temperature of charge drops to the temperature of requirement, all adds solvent by processing requirement in reactor in the water-based polyurethane adhesive production process, and opens reflux exchanger.Because the boiling point of solvent is lower, when with the mixing of materials of comparatively high temps after, heat absorption and become solvent vapo(u)r flows into the reflux exchanger from input channel, takes away the heat in the material, has reduced temperature of charge.Solvent vapo(u)r passes back into the still from output channel after the reflux exchanger condensation,---the continuous circular flow that solvent condenses flows into again that the solvent heat absorption flashes to gas---solvent vapo(u)r flows out takes away material heat---like this along with solvent flows into, can reduce water-based polyurethane adhesive production process temperature of charge, assurance water-based polyurethane adhesive production process is carried out smoothly.
Characteristics of the present invention are simple in structure, easy to use, reliable for effect.
Description of drawings:
Below in conjunction with drawings and Examples the present invention is further specified.
Fig. 1 is the structure iron of a kind of device of the present invention.
Embodiment
According to shown in Figure 1, the present invention produces at water-based polyurethane adhesive that reactor 1 is outer to arrange a solvent cycle reflux exchanger 2, and reflux exchanger 2 is communicated with reactor 1 space by input channel 3 and output channel 4.The prepolymerization reaction time then no matter whether temperature of charge drops to the temperature of requirement, all adds solvent acetone by processing requirement in reactor in the water-based polyurethane adhesive production process, and opens reflux exchanger 2.Flow into by solvent that---the continuous circular flow that solvent condenses flows into again that solvent heat absorption flashes to gas---solvent vapo(u)r flows out takes away material heat---can effectively reduce water-based polyurethane adhesive production process temperature of charge.
Claims (1)
1. water-based polyurethane adhesive production process material cool-down method, it is characterized in that the prepolymerization reaction time then in the water-based polyurethane adhesive production process, no matter whether temperature of charge drops to the temperature of requirement, all press processing requirement and produce adding solvent in the reactor (1) toward water-based polyurethane adhesive, flow into by solvent that---the continuous circular flow method that solvent condenses flows into again that solvent heat absorption flashes to gas---solvent vapo(u)r flows out takes away material heat---reduces temperature of charge.
A kind of water-based polyurethane adhesive production process material heat sink, it is characterized in that outside water-based polyurethane adhesive is produced reactor (1) a solvent cycle reflux exchanger (2) being set, reflux exchanger (2) is communicated with reactor (1) space by input channel (3) and output channel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102060516A CN102887986A (en) | 2011-07-19 | 2011-07-19 | Material cooling method and device for use in production process of aqueous polyurethane adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102060516A CN102887986A (en) | 2011-07-19 | 2011-07-19 | Material cooling method and device for use in production process of aqueous polyurethane adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102887986A true CN102887986A (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102060516A Pending CN102887986A (en) | 2011-07-19 | 2011-07-19 | Material cooling method and device for use in production process of aqueous polyurethane adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102887986A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020175066A1 (en) * | 2001-05-22 | 2002-11-28 | Kurt-Manfred Kupper | Chambered circulation evaporator |
| CN1847277A (en) * | 2006-05-08 | 2006-10-18 | 北京科聚化工新材料有限公司 | Self-emulsifying water-thinned anion polyurethane emulsion and its prepn process |
| CN101235130A (en) * | 2008-02-27 | 2008-08-06 | 烟台万华聚氨酯股份有限公司 | Cation water polyurethane emulsion and preparation method thereof |
| CN202010551U (en) * | 2011-02-26 | 2011-10-19 | 潍坊中星精细化工有限公司 | Solvent condensing device for polyurethane resin reaction kettle |
-
2011
- 2011-07-19 CN CN2011102060516A patent/CN102887986A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020175066A1 (en) * | 2001-05-22 | 2002-11-28 | Kurt-Manfred Kupper | Chambered circulation evaporator |
| CN1847277A (en) * | 2006-05-08 | 2006-10-18 | 北京科聚化工新材料有限公司 | Self-emulsifying water-thinned anion polyurethane emulsion and its prepn process |
| CN101235130A (en) * | 2008-02-27 | 2008-08-06 | 烟台万华聚氨酯股份有限公司 | Cation water polyurethane emulsion and preparation method thereof |
| CN202010551U (en) * | 2011-02-26 | 2011-10-19 | 潍坊中星精细化工有限公司 | Solvent condensing device for polyurethane resin reaction kettle |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130123 |