CN103349844A - Film distribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes - Google Patents
Film distribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes Download PDFInfo
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- CN103349844A CN103349844A CN2013102648298A CN201310264829A CN103349844A CN 103349844 A CN103349844 A CN 103349844A CN 2013102648298 A CN2013102648298 A CN 2013102648298A CN 201310264829 A CN201310264829 A CN 201310264829A CN 103349844 A CN103349844 A CN 103349844A
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- film
- falling
- liquid film
- falling liquid
- alkali lye
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Abstract
The invention discloses a film distribution device in a falling-film evaporator for the concentration of caustic soda and caustic soda flakes. The film distribution device comprises a falling-film concentration pipe, wherein the upper end of the falling-film concentration pipe extends into a soda liquor inlet pipe box, a soda liquor inlet is formed on the soda liquor inlet pipe box, and a plurality of film distribution grooves are uniformly formed in the circumference of the upper end part of the falling-film concentration pipe in the soda liquor inlet pipe box, penetrate through the wall of the falling-film concentration pipe and are arranged along a same rotation direction tangent to the falling-film concentration pipe. The film distribution device disclosed by the invention has the advantages that the structure is simple and practical; as the film distribution grooves are formed along the tangent direction of the falling-film concentration pipe, even if the flow velocity of soda liquor is high, a film also can be distributed well on the inner wall of the falling-film concentration pipe by the soda liquor, so that the film distribution effect is greatly improved.
Description
Technical field
The present invention relates to falling film evaporator, be specifically related to for the film-distributing device in the falling film evaporator of caustic soda, sheet alkali concentration process.
Background technology
Traditional film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali, comprise: the falling liquid film concentration tube, the upper end of falling liquid film concentration tube stretches in the alkali lye import bobbin carriage, be provided with the alkali lye import on the alkali lye import bobbin carriage, be positioned on the circumference of falling liquid film concentration tube upper end of alkali lye import bobbin carriage and evenly be provided with some cloth film grooves, each cloth film groove all runs through the tube wall of falling liquid film concentration tube and all along the radially setting of falling liquid film concentration tube.The operation principle of traditional film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali is as follows: be constantly to be delivered in the alkali lye import bobbin carriage from the alkali lye import after 60% the alkali lye pressurization mass concentration, alkali lye in alkali lye import bobbin carriage constantly flows in the cloth film groove with speed more slowly and continues to flow to the inwall of falling liquid film concentration tube in cloth film groove, thereby constantly forming liquid film on the inwall of falling liquid film concentration tube, also is that the continuous cloth film of alkali lye is on the inwall of falling liquid film concentration tube.Traditional shortcoming that is used for the film-distributing device of the concentrated falling film evaporator of caustic soda, sheet alkali is: cloth film groove must be slower along the flow velocity of the structural requirement alkali lye that the falling liquid film concentration tube radially arranges, in case the alkali lye flow velocity is very fast, alkali lye rushes easily to the centre of falling liquid film concentration tube, thereby causes the cloth film weak effect on falling liquid film concentration tube inwall.
Summary of the invention
The objective of the invention is: a kind of film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali that also can greatly improve faster in falling liquid film concentration tube cloth film effect at the alkali lye flow velocity in the situation is provided.
For achieving the above object, the technical solution used in the present invention is: the film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali, comprise: the falling liquid film concentration tube, the upper end of falling liquid film concentration tube stretches in the alkali lye import bobbin carriage, be provided with the alkali lye import on the alkali lye import bobbin carriage, be positioned on the circumference of falling liquid film concentration tube upper end of alkali lye import bobbin carriage and evenly be provided with some cloth film grooves, each cloth film groove all runs through the tube wall of falling liquid film concentration tube, all tangential settings along same direction of rotation along the falling liquid film concentration tube of described each cloth film groove.
Further, aforesaid film-distributing device for the concentrated falling film evaporator of caustic soda, sheet alkali, wherein, be provided with the curved baffle that is centered around the falling liquid film concentration tube outside in the alkali lye import bobbin carriage, the curved baffle gear is between falling liquid film concentration tube and alkali lye import, and the arc length of curved baffle is 1/4th of falling liquid film concentration tube outer circumference.
Advantage of the present invention is: simple and practical, because cloth film groove is along the tangential setting of falling liquid film concentration tube, even if the flow velocity of alkali lye is very fast like this, alkali lye also can be along the good cloth film on the inwall of falling liquid film concentration tube of cloth film groove, thereby has greatly improved the effect of cloth film.
Description of drawings
Fig. 1 is the mounting structure schematic diagram of the film-distributing device for the concentrated falling film evaporator of caustic soda, sheet alkali of the present invention.
Fig. 2 is the cross-sectional structure schematic diagram of cloth film groove among Fig. 1.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 1 and Figure 2, the film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali, comprise: falling liquid film concentration tube 1, the upper end of falling liquid film concentration tube 1 stretches in the alkali lye import bobbin carriage 2, be provided with alkali lye import 21 on the alkali lye import bobbin carriage 2, evenly be provided with some cloth film grooves 7 on the circumference of falling liquid film concentration tube 1 upper end in the alkali lye import bobbin carriage 2, each cloth film groove 7 all runs through the tube wall of falling liquid film concentration tube 1, all tangential settings along same direction of rotation along falling liquid film concentration tube 1 of described each cloth film groove 7.In the present embodiment, directly falling liquid film concentration tube 1 is washed away in order to prevent alkali lye, be provided with in the alkali lye import bobbin carriage 2 around the curved baffle 10 in falling liquid film concentration tube 1 outside, curved baffle 10 gears are between falling liquid film concentration tube 1 and alkali lye import 21, and the length of curved baffle 10 is 1/4th of falling liquid film concentration tube 1 outer circumference.
Operation principle of the present invention is as follows: mass concentration is constantly to be delivered in the alkali lye import bobbin carriage 2 from alkali lye import 21 after the pressurization of 60% alkali lye, alkali lye in the alkali lye import bobbin carriage 2 constantly flows in the cloth film groove 7, and the tangential direction along falling liquid film concentration tube 1 inwall continues to flow to the inwall of falling liquid film concentration tube 1 in cloth film groove 7, thereby on the inwall of falling liquid film concentration tube 1, constantly form liquid film, also be that the continuous cloth film of alkali lye is on the inwall of falling liquid film concentration tube 1, cloth film groove 7 is all along the tangential setting of falling liquid film concentration tube 1, greatly improved the effect of alkali lye cloth film on the inwall of falling liquid film concentration tube 1, when even if the flow velocity of alkali lye import bobbin carriage 2 interior alkali lye is very fast, alkali lye also can well form liquid film at the inwall of falling liquid film concentration tube 1 along the cloth film groove 7 of tangential setting.
Claims (2)
1. the film-distributing device that is used for the concentrated falling film evaporator of caustic soda, sheet alkali, comprise: the falling liquid film concentration tube, the upper end of falling liquid film concentration tube stretches in the alkali lye import bobbin carriage, be provided with the alkali lye import on the alkali lye import bobbin carriage, be positioned on the circumference of falling liquid film concentration tube upper end of alkali lye import bobbin carriage and evenly be provided with some cloth film grooves, each cloth film groove all runs through the tube wall of falling liquid film concentration tube, it is characterized in that: all tangential settings along same direction of rotation along the falling liquid film concentration tube of described each cloth film groove.
2. the film-distributing device for the concentrated falling film evaporator of caustic soda, sheet alkali according to claim 1, it is characterized in that: be provided with the curved baffle that is centered around the falling liquid film concentration tube outside in the alkali lye import bobbin carriage, the curved baffle gear is between falling liquid film concentration tube and alkali lye import, and the arc length of curved baffle is 1/4th of falling liquid film concentration tube outer circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102648298A CN103349844A (en) | 2013-06-28 | 2013-06-28 | Film distribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102648298A CN103349844A (en) | 2013-06-28 | 2013-06-28 | Film distribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103349844A true CN103349844A (en) | 2013-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102648298A Pending CN103349844A (en) | 2013-06-28 | 2013-06-28 | Film distribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes |
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| CN (1) | CN103349844A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1107980A (en) * | 1965-04-02 | 1968-03-27 | Bertrams Ag Hch | Apparatus for concentrating liquors |
| DE3643794C1 (en) * | 1986-12-20 | 1987-12-17 | Man Technologie Gmbh | Method for the production of a spiral falling-film evaporator tube |
| US20060213346A1 (en) * | 2005-03-25 | 2006-09-28 | Petur Thors | Tool for making enhanced heat transfer surfaces |
| CN2825637Y (en) * | 2005-07-29 | 2006-10-11 | 武汉裕和远东科技有限公司 | Power-saving vacuum concentrator for the production of urea |
| CN101080438A (en) * | 2004-12-16 | 2007-11-28 | 旭化成化学株式会社 | Industrial evaporation apparatus |
| CN101773878A (en) * | 2009-01-09 | 2010-07-14 | 北京中天油石油天然气科技有限公司 | Cyclone separator |
| CN101802137A (en) * | 2007-10-02 | 2010-08-11 | 埃克森美孚化学专利公司 | Method and apparatus for cooling pyrolysis effluent |
| CN101893021A (en) * | 2010-08-01 | 2010-11-24 | 王政玉 | Device for generating ordered flow |
| CN202666438U (en) * | 2012-06-18 | 2013-01-16 | 博特瑞姆斯化工技术（北京）有限公司 | Countercurrent falling-film concentrating unit |
| CN203417474U (en) * | 2013-06-28 | 2014-02-05 | 张家港化工机械股份有限公司 | Film distribution device of falling-film evaporator used for concentration of caustic soda and caustic soda flakes |
-
2013
- 2013-06-28 CN CN2013102648298A patent/CN103349844A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1107980A (en) * | 1965-04-02 | 1968-03-27 | Bertrams Ag Hch | Apparatus for concentrating liquors |
| DE3643794C1 (en) * | 1986-12-20 | 1987-12-17 | Man Technologie Gmbh | Method for the production of a spiral falling-film evaporator tube |
| CN101080438A (en) * | 2004-12-16 | 2007-11-28 | 旭化成化学株式会社 | Industrial evaporation apparatus |
| US20060213346A1 (en) * | 2005-03-25 | 2006-09-28 | Petur Thors | Tool for making enhanced heat transfer surfaces |
| CN2825637Y (en) * | 2005-07-29 | 2006-10-11 | 武汉裕和远东科技有限公司 | Power-saving vacuum concentrator for the production of urea |
| CN101802137A (en) * | 2007-10-02 | 2010-08-11 | 埃克森美孚化学专利公司 | Method and apparatus for cooling pyrolysis effluent |
| CN101773878A (en) * | 2009-01-09 | 2010-07-14 | 北京中天油石油天然气科技有限公司 | Cyclone separator |
| CN101893021A (en) * | 2010-08-01 | 2010-11-24 | 王政玉 | Device for generating ordered flow |
| CN202666438U (en) * | 2012-06-18 | 2013-01-16 | 博特瑞姆斯化工技术（北京）有限公司 | Countercurrent falling-film concentrating unit |
| CN203417474U (en) * | 2013-06-28 | 2014-02-05 | 张家港化工机械股份有限公司 | Film distribution device of falling-film evaporator used for concentration of caustic soda and caustic soda flakes |
Non-Patent Citations (1)
| Title |
|---|
| 方度等: "《氯碱工艺学》", 31 December 1990, 化学工业出版社 * |
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Application publication date: 20131016 |