CN216694222U - Dehydration system is used in production of poly propylene carbonate polyhydric alcohol - Google Patents
Dehydration system is used in production of poly propylene carbonate polyhydric alcohol Download PDFInfo
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- CN216694222U CN216694222U CN202123375031.XU CN202123375031U CN216694222U CN 216694222 U CN216694222 U CN 216694222U CN 202123375031 U CN202123375031 U CN 202123375031U CN 216694222 U CN216694222 U CN 216694222U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The utility model relates to a dehydration system for producing polypropylene carbonate polyol, which comprises a static screen, a spiral dehydrator and a demisting induced draft fan, wherein an outlet of the static screen is connected with a feed inlet of the spiral dehydrator, a gas outlet of the spiral dehydrator is connected with the demisting induced draft fan, the static screen is a shell, a screen is arranged in the static screen, the bottom of the static screen is an inclined plane, a water outlet is arranged at the bottom of the static screen, a drain outlet is arranged at the bottom of the front end of the static screen, a steam discharge port is arranged at the top of the static screen, the steam discharge port is connected with an inlet of the demisting induced draft fan, a water discharge port is arranged at the bottom of the spiral dehydrator, and two steam inlet pipelines and two steam discharge pipelines are connected to the tail end of the spiral dehydrator.
Description
Technical Field
The utility model relates to the field of production equipment of polypropylene carbonate polyol, in particular to a dehydration system for producing the polypropylene carbonate polyol.
Background
The synthetic dehydration of the polypropylene carbonate polyol in the prior art is usually carried out in a neutralization kettle, a neutralization kettle jacket is heated and stirred, and is vacuumized or a nitrogen introducing method is adopted, the time of a traditional dehydration mode is long, the production efficiency is low, the dehydration effect is unstable, the quality of the finished product of the polypropylene carbonate polyol is often too low, and the ideal effect cannot be achieved during use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dehydration system for producing polypropylene carbonate polyol, which well solves the problem of unstable dehydration effect of the polypropylene carbonate polyol.
In order to achieve the above purpose, the following technical scheme is provided:
the utility model provides a dewatering system is used in production of poly propylene carbonate polyol, includes quiet sieve, spiral hydroextractor, defogging draught fan, the export of quiet sieve links to each other with the feed inlet of spiral hydroextractor, the gas outlet of spiral hydroextractor links to each other with the defogging draught fan, quiet sieve is a casing, and inside is equipped with the screen cloth, and its bottom is the inclined plane, and the bottom is equipped with the delivery port, quiet sieve front end bottom is equipped with the drain, and its top is equipped with the steam outlet, the steam outlet links to each other with defogging draught fan entry, the bottom of spiral hydroextractor is equipped with the outlet, the end of spiral hydroextractor still is connected with two steam admission pipelines and two steam discharge pipelines.
Preferably, the drain opening is located directly below the feed inlet.
Preferably, the drain outlet and the tail end of the water outlet are combined into the same pipeline.
The utility model has the beneficial effects that:
1. the utility model can achieve the effect of multiple dehydration by combining the static sieve and the spiral dehydrator, has stable dehydration time, easy control of production rhythm and obviously improved production efficiency and product quality stability.
2. The utility model has the advantages that the demisting induced draft fan is added, so that the aim of leading out redundant steam is fulfilled, vacuum is formed in the spiral dehydrator, and the dehydration effect is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the reference symbols shown in the figures are: 1-static sieve, 2-spiral dehydrator, 3-demisting induced draft fan, 4-water outlet, 5-sewage outlet, 6-steam outlet, 7-water outlet, 8-steam inlet pipeline, 9-steam outlet pipeline, 10-material outlet, 11-air outlet, 12-material inlet pipeline and 13-material reflux pipeline.
Detailed Description
The following describes the present design in detail with reference to the accompanying drawings.
As shown in figure 1, a dehydration system for producing polypropylene carbonate polyol, which comprises a static screen 1, a spiral dehydrator 2 and a demisting induced draft fan 3, wherein the outlet of the static screen 1 is connected with the feed inlet of the spiral dehydrator 2, the gas outlet of the spiral dehydrator 2 is connected with the demisting induced draft fan 3, the static screen 1 is a shell, the inside of the static screen is provided with a screen mesh, the bottom of the static screen is an inclined plane, the bottom of the static screen is provided with a water outlet 4, after a material enters the static screen 1, the static screen 1 can form a one-stage dehydration treatment, a part of moisture is discharged through the water outlet 4 before the material enters the spiral dehydrator 2 along the static screen 1, the bottom of the front end of the static screen 1 is provided with a sewage discharge port 5, the top of the static screen is provided with a steam discharge port 6, the steam discharge port 6 is connected with the inlet of the demisting induced draft fan 3, because the demisting induced draft fan 3 is connected on the static screen 1 and the spiral dehydrator 2, negative pressure is formed in the whole equipment, thereby improving the dehydration efficiency, the bottom of spiral water extractor 2 is equipped with outlet 7, and outlet 7 is located the feed inlet under, makes things convenient for the discharge of material moisture content, and the end of spiral water extractor 2 still is connected with two steam admission pipelines 8 and two steam exhaust pipeline 9, adopts steam to heat the material in the spiral water extractor 2, and drain 5 merges into same pipeline with the end of delivery port 4, as the export of other impurity and moisture content behind the one-level dehydration.
Examples
When the device is practically applied, an inlet of the static screen 1 is connected with a material inlet pipeline 12, the material inlet pipeline 12 is provided with a material return pipeline 13, after the colloidal particle water enters the static screen 1, the colloidal particle water is separated by glue and water and then falls into a feed inlet of the spiral dehydrator 2 along the static screen 1, the material is extruded and dehydrated in the double screws, two steam enters the pipeline 8 for spiral dehydration and internal temperature rise, the demisting induced draft fan 3 simultaneously heats the steam and forms vacuum inside the spiral dehydrator 2, the water outlet efficiency is improved, the demisting induced draft fan 3 can also absorb redundant steam and tail gas and discharge the steam and tail gas through the air outlet 11, the spiral dehydration and the dehydration extrusion dehydration by the vacuum system are realized, and the sizing material is discharged from the material outlet 10.
Claims (3)
1. The utility model provides a dehydration system is used in production of poly propylene carbonate polyol, a serial communication port, including quiet sieve, spiral hydroextractor, defogging draught fan, the export of quiet sieve links to each other with the feed inlet of spiral hydroextractor, the gas outlet of spiral hydroextractor links to each other with the defogging draught fan, quiet sieve is a casing, and inside is equipped with the screen cloth, and its bottom is the inclined plane, and the bottom is equipped with the delivery port, quiet sieve front end bottom is equipped with the drain, and its top is equipped with the steam outlet, the steam outlet links to each other with defogging draught fan entry, the bottom of spiral hydroextractor is equipped with the outlet, the end of spiral hydroextractor still is connected with two steam admission pipelines and two steam discharge pipelines.
2. The dehydration system for the production of polypropylene carbonate polyol according to claim 1, wherein the drain port is located directly below the feed inlet.
3. The dehydration system for the production of polypropylene carbonate polyol according to claim 1, wherein the drain outlet and the end of the water outlet are combined into the same pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123375031.XU CN216694222U (en) | 2021-12-30 | 2021-12-30 | Dehydration system is used in production of poly propylene carbonate polyhydric alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123375031.XU CN216694222U (en) | 2021-12-30 | 2021-12-30 | Dehydration system is used in production of poly propylene carbonate polyhydric alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216694222U true CN216694222U (en) | 2022-06-07 |
Family
ID=81844092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123375031.XU Active CN216694222U (en) | 2021-12-30 | 2021-12-30 | Dehydration system is used in production of poly propylene carbonate polyhydric alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216694222U (en) |
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2021
- 2021-12-30 CN CN202123375031.XU patent/CN216694222U/en active Active
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