CN103349842A - Redistribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes - Google Patents
Redistribution device in falling-film evaporator for concentration of caustic soda and caustic soda flakes Download PDFInfo
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- CN103349842A CN103349842A CN2013102647083A CN201310264708A CN103349842A CN 103349842 A CN103349842 A CN 103349842A CN 2013102647083 A CN2013102647083 A CN 2013102647083A CN 201310264708 A CN201310264708 A CN 201310264708A CN 103349842 A CN103349842 A CN 103349842A
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Abstract
The invention discloses a redistribution device in a falling-film evaporator for the concentration of caustic soda and caustic soda flakes, which can effectively avoid the damage to the inner wall of a falling-film concentration pipe, and has a good film distribution effect. The redistribution 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 and penetrate through the wall of the falling-film concentration pipe; a blade installation rod is arranged in the falling-film concentration pipe along the axial direction, a plurality of redistribution blades are spirally distributed on the blade installation rod and tilt downwards to extend to get close to the inner wall of the falling-film concentration pipe, a flow channel, through which a liquid film flows, is formed between the outer edges of the redistribution blades and the inner wall of the falling-film concentration pipe, the blade installation rod is arranged in the upper section of the falling-film concentration pipe, and the length of the blade installation rod is two thirds of the overall length of the falling-film concentration pipe.
Description
Technical field
The present invention relates to falling film evaporator, be specifically related to the apparatus for redistributing for the concentrated falling film evaporator of caustic soda, sheet alkali.
Background technology
Be used for caustic soda, the structure of the apparatus for redistributing in the falling film evaporator that sheet alkali concentrates comprises: 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, run through vertically in the pore of falling liquid film concentration tube and be provided with the blades installation bar, blades installation bar from top to bottom spiral cloth is equipped with some blades that distribute again, and each all downward-sloping inwall that extends near the falling liquid film concentration tube of blade that distribute again forms the runner that liquid film circulates between the outward flange of the blade that distributes again and the falling liquid film concentration tube inwall.Traditional caustic soda that is used for, the operation principle of the apparatus for redistributing in the concentrated falling film evaporator of sheet alkali is as follows: mass concentration is constantly to be delivered in the alkali lye import bobbin carriage from the alkali lye import after 60% the alkali lye pressurization, alkali lye in the alkali lye import bobbin carriage constantly flows in the cloth film groove, and continue to flow to the inwall of falling liquid film concentration tube along cloth film groove, thereby on the inwall of falling liquid film concentration tube, constantly form liquid film, also be that the continuous cloth film of alkali lye is on the inwall of falling liquid film concentration tube, part does not have to drop on the blade that distributes again at the alkali lye of the inner tubal wall formation liquid film of falling liquid film concentration tube or from the alkali lye that tube wall sputters, and the alkali lye that drops on the blade that distributes again forms liquid film along the blade landing that distributes again again to the inwall of falling liquid film concentration tube.Liquid film on Action of Gravity Field descending film concentration tube inner tubal wall constantly flows downward to next station.Said structure be used for caustic soda, the shortcoming of the apparatus for redistributing in the falling film evaporator that sheet alkali concentrates is: because the blades installation bar runs through vertically and is arranged in the falling liquid film concentration tube, and blades installation bar from top to bottom spiral is evenly equipped with the blade that distributes again, width is consistent from top to bottom for runner so that distribute again between the inwall of the edge of blade and falling liquid film concentration tube, and the steam in the falling liquid film concentration tube flows from top to bottom, more down steam flow is larger, in the situation that runner width is consistent from top to bottom, more down the flow velocity of steam is larger, thereby so that the liquid film on the inwall of falling liquid film concentration tube also is that more down flow velocity is faster, more down the wearing and tearing to falling liquid film concentration tube inwall are also larger thereby cause liquid film, are very easy to like this cause the damage of falling liquid film concentration tube inwall.
Summary of the invention
The objective of the invention is: a kind of apparatus for redistributing that is used for the concentrated falling film evaporator of caustic soda, sheet alkali that is not easy to damage the falling liquid film concentration tube and can greatly improves cloth film effect is provided.
For achieving the above object, the technical solution used in the present invention is: be used for caustic soda, apparatus for redistributing in the falling film evaporator that sheet alkali concentrates, 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, be provided with vertically the blades installation bar in the pore of falling liquid film concentration tube, blades installation bar from top to bottom spiral cloth is equipped with some blades that distribute again, and each all downward-sloping inwall that extends near the falling liquid film concentration tube of blade that distribute again, distribute again and form the runner of liquid film circulation between the outward flange of blade and the falling liquid film concentration tube inwall, described blades installation bar is arranged in the pore of epimere part in the falling liquid film concentration tube, and the length of blades installation bar is 2/3rds of falling liquid film concentration tube overall length.
Further, aforesaid apparatus for redistributing for the concentrated falling film evaporator of caustic soda, sheet alkali, wherein, all tangential settings along same direction of rotation along the falling liquid film concentration tube of described each cloth film groove.
Further, aforesaid apparatus for redistributing for the concentrated falling film evaporator of caustic soda, sheet alkali, wherein, adjacent two spacings that distribute again between the blade on the blades installation bar are 200mm～300mm.
Advantage of the present invention is: simple and practical, the length of blades installation bar is 2/3rds of falling liquid film concentration tube overall length, therefore the width of the mobile runner of Gong the steam in the falling liquid film concentration tube of blades installation bar below and liquid film increases greatly, so that the steam in the falling liquid film concentration tube hypomere is relative mild with liquid film energy flow velocity, thereby greatly reduced the wearing and tearing to the inwall of hypomere falling liquid film concentration tube, effectively avoided falling liquid film concentration tube inwall injury.
Description of drawings
Fig. 1 is the structural representation of the apparatus for redistributing 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.
Such as Fig. 1, shown in Figure 2, be used for caustic soda, apparatus for redistributing in the falling film evaporator that sheet alkali concentrates, 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, be provided with vertically blades installation bar 5 in the pore 1 of falling liquid film concentration tube, blades installation bar 5 from top to bottom spiral has been evenly arranged some blades 6 that distribute again, and each all downward-sloping inwall that extends near falling liquid film concentration tube 1 of blade 6 that distribute again, adjacent two spacings that distribute again between the blade can be between 200mm～300mm, and preferred distance is 250mm.Distribute again and form the runner of liquid film circulation between the outward flange of blade 6 and falling liquid film concentration tube 1 inwall, described blades installation bar 5 is arranged in the epimere pore partly of falling liquid film concentration tube 1, and the length of blades installation bar 5 is 2/3rds of falling liquid film concentration tube 1 overall length.In the present embodiment, described each cloth film groove 7 along same direction of rotation all along the tangential setting of falling liquid film concentration tube 2.
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 alkali lye import bobbin carriage 2 constantly flows in the cloth film groove 7, and continue to flow to the inwall of falling liquid film concentration tube 1 in cloth film groove 7 along the tangential direction of falling liquid film concentration tube 1 inwall, 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 be along the good cloth film on the inwall of falling liquid film concentration tube 1 of the cloth film groove 7 of tangential setting.Part does not form the alkali lye of liquid film or drops from the alkali lye that inwall sputters at the inner tube of falling liquid film concentration tube 1=wall and distributing on the blade 6 again, and the alkali lye that drops on the blade 6 that distributes again forms liquid film along blade 6 landings that distribute again to the inwall of falling liquid film concentration tube 1.Liquid film on Action of Gravity Field descending film concentration tube 1 inwall constantly flows downward.Because the length of blades installation bar 5 is 2/3rds of falling liquid film concentration tube 1 overall length, therefore but the width of the runner of the feed flow membrane flow in the falling liquid film concentration tube 1 of blades installation bar 5 belows increases greatly, so that the steam in falling liquid film concentration tube 1 hypomere is relative mild with liquid film energy flow velocity, thereby greatly reduced the wearing and tearing to the inwall of hypomere falling liquid film concentration tube 1, effectively avoided falling liquid film concentration tube 1 inwall injury.
Claims (3)
1. be used for caustic soda, apparatus for redistributing in the falling film evaporator that sheet alkali concentrates, 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, be provided with vertically the blades installation bar in the pore of falling liquid film concentration tube, blades installation bar from top to bottom spiral cloth is equipped with some blades that distribute again, and each all downward-sloping inwall that extends near the falling liquid film concentration tube of blade that distribute again, distribute again and form the runner of liquid film circulation between the outward flange of blade and the falling liquid film concentration tube inwall, it is characterized in that: described blades installation bar is arranged in the pore of epimere part in the falling liquid film concentration tube, and the length of blades installation bar is 2/3rds of falling liquid film concentration tube overall length.
2. the apparatus for redistributing for the concentrated falling film evaporator of caustic soda, sheet alkali according to claim 1 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.
3. according to claim 1 and 2 for caustic soda, the concentrated falling film evaporator of sheet alkali, it is characterized in that: adjacent two spacings that distribute again between the blade on the blades installation bar are 200mm～300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310264708.3A CN103349842B (en) | 2013-06-28 | 2013-06-28 | For the apparatus for redistributing in the falling film evaporator that caustic soda, sheet alkali concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310264708.3A CN103349842B (en) | 2013-06-28 | 2013-06-28 | For the apparatus for redistributing in the falling film evaporator that caustic soda, sheet alkali concentrate |
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| Publication Number | Publication Date |
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| CN103349842A true CN103349842A (en) | 2013-10-16 |
| CN103349842B CN103349842B (en) | 2015-09-16 |
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| CN201310264708.3A Active CN103349842B (en) | 2013-06-28 | 2013-06-28 | For the apparatus for redistributing in the falling film evaporator that caustic soda, sheet alkali concentrate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1107980A (en) * | 1965-04-02 | 1968-03-27 | Bertrams Ag Hch | Apparatus for concentrating liquors |
| 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 |
| CN201632082U (en) * | 2010-02-25 | 2010-11-17 | 天津科技大学 | Film distribution device of pipe falling film evaporator and combination workpiece of film distribution device |
| 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 |
| CN203525345U (en) * | 2013-06-28 | 2014-04-09 | 张家港化工机械股份有限公司 | Redistribution device in falling-film evaporator for caustic soda and caustic flake concentration |
-
2013
- 2013-06-28 CN CN201310264708.3A patent/CN103349842B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1107980A (en) * | 1965-04-02 | 1968-03-27 | Bertrams Ag Hch | Apparatus for concentrating liquors |
| 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 |
| CN201632082U (en) * | 2010-02-25 | 2010-11-17 | 天津科技大学 | Film distribution device of pipe falling film evaporator and combination workpiece of film distribution device |
| 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 |
| CN203525345U (en) * | 2013-06-28 | 2014-04-09 | 张家港化工机械股份有限公司 | Redistribution device in falling-film evaporator for caustic soda and caustic flake concentration |
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| CN103349842B (en) | 2015-09-16 |
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Address after: 215633 Jiangsu Province, Suzhou Zhangjiagang City gold town after Cheng Cheng Yang Lu Applicant after: Suzhou Tian Wo Science and Technology Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 gold town Zhangjiagang city after Cheng Cheng Yang Road Zhangjiagang chemical machinery Limited by Share Ltd Applicant before: Zhangjiagang Chamical Machinery Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: ZHANGJIAGANG CHEMICAL MACHINERY CO., LTD. TO: SUZHOU TIANWO TECHNOLOGY CO., LTD. |
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Effective date of registration: 20170828 Address after: 215632, Linjiang Road, Changshan village, Nansha Town, Zhangjiagang, Jiangsu, Suzhou 1, China Patentee after: Chang Hua machine (Suzhou) heavy equipment Co., Ltd. Address before: 215633 Jiangsu Province, Suzhou Zhangjiagang City gold town after Cheng Cheng Yang Lu Patentee before: Suzhou Tian Wo Science and Technology Co., Ltd. |