CN203886210U - Anti-caking spray drying device for redispersible polymer latex powder - Google Patents
Anti-caking spray drying device for redispersible polymer latex powder Download PDFInfo
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- CN203886210U CN203886210U CN201420270453.1U CN201420270453U CN203886210U CN 203886210 U CN203886210 U CN 203886210U CN 201420270453 U CN201420270453 U CN 201420270453U CN 203886210 U CN203886210 U CN 203886210U
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- spray drying
- drying tower
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Abstract
The utility model discloses an anti-caking spray drying device for redispersible polymer latex powder. The device comprises a spray drying tower, wherein a hot air distributor is arranged above the spray drying tower, and a feeding tube used for feeding anti-caking agent powder is arranged at the hot air outlet of the hot air distributor; an air inlet is formed in the side wall of a conical cylinder under the spray drying tower and connected with a cold air conveying device. The device can effectively lower the temperature of the outlet of the spray drying device and can uniformly mix an anti-caking agent and latex powder in the spray drying process, so that the phenomena of wall sticking and caking of latex in the spray drying process are reduced, and the product quality is improved.
Description
Technical field
The utility model relates to a kind of drying equipment, more specifically a kind of spray drying device that prevents powder agglomeration of producing for Redispersible Polymeric Emulsion Powder.
Background technology
Redispersible Polymeric Emulsion Powder is by the dry dry powder of removing the good fluidity obtaining after moisture of polymer emulsion spraying, and this powder need possess the ability that is separated into again stable emulsion after water that adds.Redispersable latex powder is as film forming adhesive, be widely used in the fields such as Polymer-Modified Mortar, dry powder paint and medicament clothing sheet material, this just requires the component of polymer that forms latex powder should have lower vitrification point and film-forming temperature, to guarantee the film forming adhesive property of product under room temperature or lower serviceability temperature.And lower vitrification point makes latex powder particle be subject to thermal softening in spray-dired hot environment, there is the caking of reuniting, affect output and the quality of product.
Current Redispersible Polymeric Emulsion Powder spray-drying installation follows mostly from traditional milk powder spray-drying installation, and out temperature presents positive correlation.For guaranteeing the fully dry of polymer emulsion powder, inlet temperature is many, and higher than 120 ℃, corresponding outlet temperature, often higher than the vitrification point of polymer, causes latex powder particle to soften adhesion, and caking and sticky wall occur.
In the production of redispersable latex powder, tend to add the hydrophilic polymers such as polyvinyl alcohol in polymer emulsion, in mist projection granulating process, be filled between emulsion particle, to avoid emulsion particle mutually to merge, improve the dispersibility again of latex powder in spray-drying process.And hydrophilic polymer in latex powder causes the product deliquescence that is easy to absorb water, the hydrogen bond action between the hydrophilic radicals such as hydroxyl also makes latex powder be easy to caking.Therefore in producing, tend to add the inorganic anti-caking agents such as aluminium-magnesium silicate in dry latex powder, lower the intergranular absorption adhesion of latex powder, improve mobility and the storage period of powder.
Anti-caking agent normally directly adds in redispersable latex powder and is dry mixed at present.Because anti-caking agent and redispersable latex powder are micron particles, and the chemical composition of the two is obviously different, causes the two uniformity coefficient being dry mixed to reduce, and has affected the performance of anti-caking performance.
Summary of the invention
The purpose of this utility model is the weak point for above-mentioned existing apparatus, a kind of spray-drying installation of producing for Redispersible Polymeric Emulsion Powder is provided, to avoid latex powder, in spray-drying process, lump, and improve the uniformity coefficient that anti-caking agent mixes with latex powder, improve output and the quality of Redispersible Polymeric Emulsion Powder.
The purpose of this utility model can realize by following technical proposal:
A Redispersible Polymeric Emulsion Powder anti-caking spray-drying installation, this device bag spray drying tower, spray drying tower top is provided with hot-air distributor, is provided for the feeder sleeve of anti-caking agent powder input at the hot-blast outlet place of hot-air distributor; Below spray drying tower, on the sidewall of conical shell, be provided with air inlet, this air inlet connects the device of carrying cold air.
Described air inlet is near the bottom of spray drying tower.
The device of described conveying cold air is for carry the strength of cold air and anti-caking agent powder to carry loader simultaneously.
Described cold air and anti-caking agent powder enter the direction of spray drying tower should be along the tangential direction of tower inner drying flow rotation.
The powder transfer device that described feeder sleeve connects should avoid using strength to carry type equipment.
The architectural feature of the spray-drying installation that the utility model is related is:
1. above drying tower, hot-air distributor place is provided for the fine powder feeder sleeve that anti-caking agent powder is inputted, in spray-drying process, anti-caking agent can be input in drying tower with high temperature drying gas (hot blast), feed liquid simultaneously, anti-caking agent powder particle together with feed liquid droplet disperse in dry gas stream, feed liquid droplet desiccation is latex powder particle, along with dry run and anti-caking agent fully mix.
2. below drying tower, the position that approaches cyclone separator outlet is provided for the Pneumatic conveyer of anti-caking agent powder and low temperature drying gas (cold wind) input, temperature and the flow of by adjusting, inputting cold wind, can reduce the temperature in drying tower exit.Anti-caking agent and dry latex powder with cold wind input evenly mix in dry gas stream.
Compared with prior art, the utility model has the advantage of:
1. anti-caking agent and hot blast, feed liquid are input in drying tower simultaneously, utilize the rotation of dry gas stream in drying tower that anti-caking agent is mixed with feed liquid droplet/latex powder, mix and carry out more even fully.
2. below drying tower, utilize Pneumatic conveyer that cold wind and anti-caking agent are input near drying tower outlet simultaneously, latex powder is herein often fully dry, the cold wind of input can reduce the temperature of outlet dry gas stream, in the situation that not sacrificing inlet temperature, reduce outlet temperature, make it lower than the vitrification point of polymer, can effectively alleviate caking and sticky wall that latex powder particle is caused by thermal softening.The anti-caking agent of inputting with cold wind mixes in dry gas stream with latex powder, can, by latex powder particle and the isolation of drying tower wall part, avoid to a certain extent the generation of wall sticking phenomenon.
3. the combination of carrying loader by spray tower top fine powder feeder sleeve and bottom strength, can select flexibly according to the situation of the dry feed liquid of spraying input position and the corresponding inlet amount of anti-caking agent, or select just in bottom, to input cold wind, realize flexible modulation and control to the dry agglomeration resistance technique of this spraying.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model; 1. air cleaner; 2. pressure fan; 3. air heater; 4. pump; 5. strength is carried loader; 6. hot-air distributor; 7. atomizer; 8. feeder sleeve; 9. spray drying tower; 10. cyclone separator; 11. air-introduced machines; 12. tails dedusting devices.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail, but embodiment of the present utility model is not limited to this, for not dated especially technological parameter, can carries out with reference to routine techniques.
With reference to Fig. 1, spray-drying installation of the present utility model is mainly partly comprised of air inlet feed system, spray drying system, material recycle and tails dedusting system etc.In concrete enforcement, this device bag spray drying tower 9, spray drying tower 9 tops are provided with hot-air distributor 6, are provided for the feeder sleeve 8 of anti-caking agent powder input at the hot-blast outlet place of hot-air distributor 6; Below spray drying tower 9, on the sidewall of conical shell, be provided with air inlet, this air inlet connects strength and carries loader 5.Described air inlet is near the bottom of spray drying tower 9.
When dry air enters spray drying tower 9 by air cleaner 1, pressure fan 2 and air heater 3, when feed liquid enters spray drying tower 9 by pump 4 and atomizer 7, anti-caking agent can be input in spray drying tower 9 by feeder sleeve 8 simultaneously, thereby realize, utilizes dry gas stream that anti-caking agent and latex powder are fully mixed.You need to add is that, the powder transfer device that feeder sleeve 8 connects herein should avoid using strength to carry type equipment, in order to avoid disturb air quantity and the flow direction of air-flow in drying tower, makes dry run confusion reigned.
In addition, cold wind and anti-caking agent powder carry loader 5 to be input in spray drying tower 9 by strength simultaneously, and both enter the direction of spray drying tower should be along the tangential direction of tower inner drying flow rotation, dry gas stream are flowed to and cause disturbance avoiding as far as possible.Cold wind mixes with hot blast in tower, reduces the temperature of this exit dry gas stream, and anti-caking agent is along with dry gas stream fully mixes with latex powder.A latex powder product part that is added with anti-caking agent for the dry gained of spraying is directly collected acquisition by spray drying tower 9 belows, and a part enters cyclone separator 10 and collects acquisition; The dust-containing tail gas producing is delivered to tails dedusting device 12 by air-introduced machine 11 and processes rear emptying.Whether spray drying tower 9 and cyclone separator 10 are collected the latex powder product obtaining needs to add anti-caking agent depending on its fluidity determining, then can pack.
Claims (5)
1. a Redispersible Polymeric Emulsion Powder anti-caking spray-drying installation, this device bag spray drying tower, spray drying tower top is provided with hot-air distributor, it is characterized in that, is provided for the feeder sleeve of anti-caking agent powder input at the hot-blast outlet place of hot-air distributor; Below spray drying tower, on the sidewall of conical shell, be provided with air inlet, this air inlet connects the device of carrying cold air.
2. device according to claim 1, is characterized in that, described air inlet is near the bottom of spray drying tower.
3. device according to claim 1 and 2, is characterized in that, the device of described conveying cold air is for carry the strength of cold air and anti-caking agent powder to carry loader simultaneously.
4. device according to claim 1 and 2, is characterized in that, described cold air enters the direction of spray drying tower should be along the tangential direction of tower inner drying flow rotation.
5. device according to claim 3, is characterized in that, described cold air and anti-caking agent powder enter the direction of spray drying tower should be along the tangential direction of tower inner drying flow rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270453.1U CN203886210U (en) | 2014-05-23 | 2014-05-23 | Anti-caking spray drying device for redispersible polymer latex powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270453.1U CN203886210U (en) | 2014-05-23 | 2014-05-23 | Anti-caking spray drying device for redispersible polymer latex powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203886210U true CN203886210U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270453.1U Expired - Fee Related CN203886210U (en) | 2014-05-23 | 2014-05-23 | Anti-caking spray drying device for redispersible polymer latex powder |
Country Status (1)
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| CN (1) | CN203886210U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597348A (en) * | 2016-02-03 | 2016-05-25 | 山东东临新材料股份有限公司 | Efficient multifunctional polymer emulsion drying equipment |
| CN107335244A (en) * | 2017-09-05 | 2017-11-10 | 临颍路得生物科技有限公司 | It is spray-dried combined mist device and combined mist method |
| CN107442377A (en) * | 2017-08-18 | 2017-12-08 | 苏州格瑞格登新材料科技有限公司 | A kind of glue powder polyphenyl particle coating material production energy-conservation spray tower |
| CN108015920A (en) * | 2016-11-01 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of anti-sticking wall cohesive powders body prepares device and method |
| CN109499476A (en) * | 2017-09-15 | 2019-03-22 | 中国石油化工股份有限公司 | Cohesive powders body prepares system and method |
| CN115353750A (en) * | 2022-08-29 | 2022-11-18 | 深圳市德立新材料科技有限公司 | Preparation method of polymer powder, spray drying equipment, battery diaphragm and secondary battery |
-
2014
- 2014-05-23 CN CN201420270453.1U patent/CN203886210U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597348A (en) * | 2016-02-03 | 2016-05-25 | 山东东临新材料股份有限公司 | Efficient multifunctional polymer emulsion drying equipment |
| CN105597348B (en) * | 2016-02-03 | 2018-01-12 | 山东东临新材料股份有限公司 | A kind of high-efficiency multi-function polymer emulsion drying equipment |
| CN108015920A (en) * | 2016-11-01 | 2018-05-11 | 中国石油化工股份有限公司 | A kind of anti-sticking wall cohesive powders body prepares device and method |
| CN107442377A (en) * | 2017-08-18 | 2017-12-08 | 苏州格瑞格登新材料科技有限公司 | A kind of glue powder polyphenyl particle coating material production energy-conservation spray tower |
| CN107335244A (en) * | 2017-09-05 | 2017-11-10 | 临颍路得生物科技有限公司 | It is spray-dried combined mist device and combined mist method |
| CN109499476A (en) * | 2017-09-15 | 2019-03-22 | 中国石油化工股份有限公司 | Cohesive powders body prepares system and method |
| CN109499476B (en) * | 2017-09-15 | 2022-03-29 | 中国石油化工股份有限公司 | System and method for preparing viscous powder |
| CN115353750A (en) * | 2022-08-29 | 2022-11-18 | 深圳市德立新材料科技有限公司 | Preparation method of polymer powder, spray drying equipment, battery diaphragm and secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20160523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |