CN102671400A - Device and method for conveying materials between different effects of evaporators of multi-effect multiphase flow evaporator - Google Patents
Device and method for conveying materials between different effects of evaporators of multi-effect multiphase flow evaporator Download PDFInfo
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- CN102671400A CN102671400A CN2011102170501A CN201110217050A CN102671400A CN 102671400 A CN102671400 A CN 102671400A CN 2011102170501 A CN2011102170501 A CN 2011102170501A CN 201110217050 A CN201110217050 A CN 201110217050A CN 102671400 A CN102671400 A CN 102671400A
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Abstract
The invention provides a device and a method for conveying materials between different effects of evaporators of a multi-effect multiphase flow evaporator. The device comprises an inclined pipe, a tapered enlarged pipe, a cover plate and a discharging pipe and the like, wherein a valve is arranged on the device for conveying the materials and is used for controlling the flow of conveyed materials to ensure that solid particles which are added in the multiphase flow evaporator are prevented from entering the next effect of evaporator, the requirement that fine crystals flow along feed liquid can be met, and the condition that the device for conveying the materials is blocked by large scale pieces after the original scale layer in the conventional evaporator is removed can be avoided. The device and the method can be used for conveying materials which are easy to scale between different effects of evaporators during multi-effect multiphase flow evaporation in the fields of chemical industry, medicine, seawater chemical industry and the like.
Description
Technical field
The present invention relates to punishment in advance technology between a kind of effect of multiple-effect evaporation, punishment in advance device and method between particularly a kind of effect that is used for multiple-effect multiphase flow evaporimeter.
Background technology
In fields such as chemical industry, medicine, seawater chemical industry, usually run into the evaporation process that is prone to the fouling material.Though adopt multiple-effect forced-circulation evaporator, anti-circulating evaporator etc., the scale formation of material in evaporation process is still inevitable, need often to clean; Cleaning frequency even reach weekly or for several times; Both wasted energy, influenced output again, cleaned also contaminated environment of waste liquid.For preventing that effectively the scale formation of material in evaporation process from taking place, and can adopt the multiphase flow evaporation technique.The multiphase flow evaporation is in evaporimeter, to have added inert solid particle; Rely on the frequent disturbance of solid particle to flow boundary layer and heat transfer boundary layer; Increase the shearing force of fluid heat exchanging inside pipe wall face, destroyed the condition that dirt forms, thereby prevented that scale formation takes place in the heat exchanger tube.
Patent " explosive evaporation device and method of operating with augmentation of heat transfer, good antiscale property performance " (ZL96120008.1) provides a kind of forced-circulation boiling vaporising device with two separation chambers.Patent " online efficient anti-wall built-up three-phase flow evaporation concentration device and method of operating " (ZL02131135.8) provides a kind of Natural Circulation three-phase flow evaporator device with a separation chamber.The related multiphase flow evaporimeter of above-mentioned patent only uses as single-action, does not relate to two and imitates and the more operation of multiple-effect number.
Punishment in advance between needing to imitate in the multiple-effect evaporation operation, punishment in advance is to adopt simple charge tube between the effect of common multiple-effect evaporation.Scale formation generation for the process of avoiding evaporating; When adopting multiple-effect multiphase flow evaporation operation; 1st effective evaporator under the solid particle that must prevent in every single-effect evaporator, to add gets into during with the feed liquid punishment in advance; The special materials device of crossing must be set, to ensure the normal operation of Multi-effect Evaporation Processes between imitating.
The object of the invention is exactly the deficiency that will overcome punishment in advance technology between existing effect; Provide between a kind of effect that is used for multiple-effect multiphase flow evaporimeter and cross materials device; Prevent that the solid particle that adds in the multiphase flow evaporimeter from getting into 1st effective evaporator down, satisfies the requirement that microlite flows with feed liquid, simultaneously if old evaporator system transformation; To be able to prevent that also the bulk dirt sheet after original dirt layer is eliminated in the old evaporimeter from stopping up materials device, realizes effective conveying of feed liquid between two effects.
Summary of the invention
The present invention provides punishment in advance device and method between a kind of effect that is used for multiple-effect multiphase flow evaporimeter; Prevent that the solid particle that adds in the multiphase flow evaporimeter from getting into 1st effective evaporator down; Satisfy the requirement that microlite flows with feed liquid simultaneously; If old evaporator system transformation will be able to prevent that also the bulk dirt sheet after original dirt layer is eliminated in the old evaporimeter from stopping up materials device, realize effective conveying of feed liquid between two effects.
The present invention is achieved in that
Be used for crossing materials device between the effect of multiple-effect multiphase flow evaporimeter, form (accompanying drawing 1) by inclined tube, taper enlarged tube, cover plate, discharge nozzle.Valve control punishment in advance flow is housed on the punishment in advance pipeline; Can prevent that certain solid particle of imitating adding from getting into 1st effective evaporator down; Satisfy microlite simultaneously with the requirement that feed liquid flows, in the time of can preventing that also old evaporimeter from transforming, the bulk dirt sheet after original dirt layer is eliminated stopped up materials device.
The above-mentioned inclined tube diameter of crossing materials device confirms that according to the velocity in pipes of punishment in advance amount, permission the angle of inclined tube and horizontal plane is 30～75 °, and the bottom is directly welded with the circulation pipe of multiphase flow evaporimeter or is connected with flange, and top is concordant outlet.
The above-mentioned taper enlarged tube of crossing materials device, its underpart diameter is identical with the top outlet of aforementioned inclined tube, can weld together, and also available flange connects; After the reducing of 10～30 ° of semi-cone angle enlarged, enlarged-diameter was 1.5～3.5 times a lower diameter, becomes columnar structured then.In expanding reach, because circulation area increases, the feed liquid flowing velocity is slack-off, less than the free-falling velocity of solid particle, is not enough to carry the solid particle that is added and moves upward, and particle is done subsiding movement downwards, and feed liquid upwards flows.
The above-mentioned discharge nozzle of crossing materials device is the pipeline that has rectangular slot, also can be to offer circular hole, elliptical aperture (accompanying drawing 2).The circulation area of the slot of being offered on the pipeline, circular hole, elliptical aperture is not less than the discharge nozzle cross-sectional area, and the size of minimum direction is less than the solid particle minimum dimension dmm that is added, preferably d-(0.5～1.8) mm.
Punishment in advance Design of device method adopts the computational methods of solid particle fluidised formization in the hydrodynamics.
The present invention crosses the simple in structure of materials device, and adaptability is strong, can in multiple-effect multiphase flow evaporation process, realize the effective punishment in advance from the downward 1st effective evaporator of certain single-effect evaporator, and the punishment in advance process does not have clogging to take place, and punishment in advance is smooth and easy; Be easy to realize serialization production.
Description of drawings
Cross materials device between the effect of accompanying drawing 1 multiple-effect multiphase flow evaporimeter
Accompanying drawing 2 discharge nozzle structures
1-inclined tube, 2-taper enlarged tube, 3-cover plate, 4-discharge nozzle, 5-valve
Fig. 1 (a) is that flange connection (b) is Welding Structure
Fig. 2 (a) is that the rectangular slot structure (b) of discharge nozzle is the opened round pore structure of discharge nozzle
The specific embodiment
Be used between the effect of multiple-effect multiphase flow evaporimeter the punishment in advance device and method introduces below in conjunction with 3 couples of the present invention of accompanying drawing more in detail.
Accompanying drawing 3 is that two of a cover treating capacity 2500kg/h, total evaporation 1500kg/h imitated multiphase flow sodium chloride solution vapo(u)rization system; First single-effect evaporator and second single-effect evaporator all are the multiphase flow evaporimeters; In evaporimeter, all added the solid particle with antiscale and augmentation of heat transfer function, particle diameter is 2.5mm.In operation, for guaranteeing the liquid level of the sodium chloride solution in second single-effect evaporator, between two effects, be provided with the materials device of crossing of the present invention.
This is crossed materials device and is made up of inclined tube 1, taper enlarged tube 2, cover plate 3, discharge nozzle 4.Inclined tube 1 adopts round tube, caliber 100mm, with the circulation pipe angle be 30 °, adopt between inclined tube and the circulation pipe to be welded to connect.
The taper enlarged tube adopts Welding Structure to be connected with inclined tube, 15 ° of semi-cone angle, and taper enlarged tube end diameter is identical with the inclined tube diameter, outside diameter 400mm, height 350mm.In this enlarged tube, the feed liquid flowing velocity reduces from bottom to top gradually, and movement of particles is during to big end parts; The free-falling velocity of particle is greater than the feed liquid flowing velocity; Particle sinks, and can not move upward with feed liquid, thereby the solid particle of having avoided first effect to add gets into second single-effect evaporator.
Cross the materials device top and be provided with the cover plate for sealing feed liquid.On the cover board have circular hole; Discharge nozzle is installed in the hole, and the punishment in advance amount was calculated this discharge nozzle diameter 50mm with the interior permissible velocity of flow of pipe between the diameter of discharge nozzle was imitated by two of technological requirement; Discharge nozzle tube head porch has baffle plate to intercept; Pipe shaft has rectangular slot, and total circulation area of slot is 120% of a discharge nozzle cross-sectional area, slot width 2mm.Valve 5 is housed on the discharging pipeline regulates the punishment in advance flow, to satisfy the requirement of different punishment in advance amounts.
Punishment in advance apparatus structure of the present invention is simple, and punishment in advance is smooth and easy, and no clogging takes place, and has guaranteed that two imitate normally moving continuously of multiphase flow sodium chloride solution vapo(u)rization system.
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has carried out detailed explanation with reference to the above embodiments to the present invention,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. cross materials device between an effect that is used for multiple-effect multiphase flow evaporimeter; It is characterized in that forming by inclined tube, taper enlarged tube, cover plate, discharge nozzle; Valve control punishment in advance flow is arranged on the punishment in advance pipeline; Can prevent that the solid particle that certain single-effect evaporator adds from getting into 2nd effect evaporator down, satisfy microlite simultaneously, can prevent also that original dirt layer is eliminated back bulk dirt sheet in the old evaporimeter to stop up materials device with the requirement that feed liquid flows.
2. cross materials device between a kind of effect that is used for multiple-effect multiphase flow evaporimeter as claimed in claim 1, the angle that it is characterized in that inclined tube and horizontal plane is 30～75 °; The taper enlarged tube is vertical pipe, 10～30 ° of semi-cone angle.
3. cross materials device between a kind of effect that is used for multiple-effect multiphase flow evaporimeter as claimed in claim 1, it is characterized in that having on the discharge nozzle rectangular slot, also can offer circular hole, elliptical aperture.
4. cross the discharge nozzle of materials device between effect as claimed in claim 3; The circulation area that it is characterized in that slot, circular hole, elliptical aperture is not less than the discharge nozzle cross-sectional area; The size of minimum direction is less than the solid particle minimum dimension d that is added, preferably d-(0.5～1.8) mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217050.1A CN102671400B (en) | 2011-08-01 | 2011-08-01 | Device and method for conveying materials between different effects of evaporators of multi-effect multiphase flow evaporator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217050.1A CN102671400B (en) | 2011-08-01 | 2011-08-01 | Device and method for conveying materials between different effects of evaporators of multi-effect multiphase flow evaporator |
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| Publication Number | Publication Date |
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| CN102671400A true CN102671400A (en) | 2012-09-19 |
| CN102671400B CN102671400B (en) | 2014-05-07 |
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| CN201110217050.1A Active CN102671400B (en) | 2011-08-01 | 2011-08-01 | Device and method for conveying materials between different effects of evaporators of multi-effect multiphase flow evaporator |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3280009A (en) * | 1959-07-13 | 1966-10-18 | Rheinpreussen Ag | Process and apparatus for spray evaporation |
| CN201135788Y (en) * | 2007-12-11 | 2008-10-22 | 中国铝业股份有限公司 | Forced circulation multi-effect evaporation system |
| CN201179354Y (en) * | 2007-07-13 | 2009-01-14 | 甘宗彭 | Novel reverse circulation evaporator |
-
2011
- 2011-08-01 CN CN201110217050.1A patent/CN102671400B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3280009A (en) * | 1959-07-13 | 1966-10-18 | Rheinpreussen Ag | Process and apparatus for spray evaporation |
| CN201179354Y (en) * | 2007-07-13 | 2009-01-14 | 甘宗彭 | Novel reverse circulation evaporator |
| CN201135788Y (en) * | 2007-12-11 | 2008-10-22 | 中国铝业股份有限公司 | Forced circulation multi-effect evaporation system |
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| CN102671400B (en) | 2014-05-07 |
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Owner name: NANTONG SHUGUANG NEW ENERGY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TIANJIN GATHER LEVITATION TECHNOLOGY CO., LTD. Effective date: 20150318 |
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Inventor after: Qiu Yajuan Inventor after: Zhang Shaofeng Inventor after: Zhao Jianjun Inventor after: Yan Kaihong Inventor after: Zhao Huilan Inventor after: Guo Chengtie Inventor after: Wang Liyuan Inventor after: Zhao Guifeng Inventor before: Qiu Yajuan Inventor before: Zhao Huilan Inventor before: Guo Chengtie Inventor before: Wang Liyuan |
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Free format text: CORRECT: ADDRESS; FROM: 300270 BINHAI NEW DISTRICT, TIANJIN TO: 226600 NANTONG, JIANGSU PROVINCE Free format text: CORRECT: INVENTOR; FROM: QIU YAJUAN ZHAO HUILAN GUO CHENGTIE WANG LIYUAN TO: QIU YAJUAN ZHANG SHAOFENG ZHAO JIANJUN YAN KAIHONG ZHAO HUILAN GUO CHENGTIE WANG LIYUAN ZHAO GUIFENG |
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Effective date of registration: 20150318 Address after: 226600, No. 3 Lake Avenue, Chengdong Town, Haian County, Nantong, Jiangsu Patentee after: NANTONG SHUGUANG NEW ENERGY EQUIPMENT CO., LTD. Address before: 300270, Tianjin Binhai New Area Dagang Town, Ma Tong Village Patentee before: Tianjin Gather Levitation Technology Co., Ltd. |