CN102671400B - 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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- CN102671400B CN102671400B CN201110217050.1A CN201110217050A CN102671400B CN 102671400 B CN102671400 B CN 102671400B CN 201110217050 A CN201110217050 A CN 201110217050A CN 102671400 B CN102671400 B CN 102671400B
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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, particularly a kind of for charging apparatus and method between the effect of multiple-effect multiphase flow evaporimeter.
Background technology
In fields such as chemical industry, medicine, seawater chemical industry, usually run into the evaporation process of easy fouling material.Although adopt multi-effect forced circulation evaporation device, anti-circulating evaporator etc., the scale formation of material in evaporation process is still inevitable, need to often clean, cleaning frequency even reaches weekly or several, both wasted energy, affected again output, cleaned also contaminated environment of waste liquid.For effectively preventing that the scale formation of material in evaporation process from occurring, and can adopt multiphase flow evaporation technique.Multiphase flow evaporation is in evaporimeter, to have added inert solid particle, rely on the frequent disturbance of solid particle 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 in heat exchanger tube, scale formation occurs.
Patent " has explosive evaporation device and the method for operating of augmentation of heat transfer, scale-preventing performance " (ZL96120008.1) provides the forced-circulation boiling vaporising device of a kind of Liang Ge of having separation chamber.Patent " online high-efficientthree-phase flow evaporation concentration device with solid particle for preventing and method of operating " (ZL02131135.8) provides a kind of Natural Circulation three-phase flow evaporimeter with a separation chamber.The related multiphase flow evaporimeter of above-mentioned patent only uses as single-action, does not relate to two effects and the more operation of multiple-effect number.
In multiple-effect evaporation operation, need punishment in advance between effect, between the effect of common multiple-effect evaporation, punishment in advance is to adopt simple charge tube.For the scale formation of the process of avoiding evaporating occurs, when adopting multiple-effect multiphase flow evaporation operation, must prevent from entering when the solid particle that adds is with feed liquid punishment in advance lower 1st effective evaporator in every single-effect evaporator, between effect, special charging apparatus must be set, to ensure the normal operation of Multi-effect Evaporation Processes.
Object of the present invention is exactly the deficiency that will overcome punishment in advance technology between existing effect, provide a kind of for charging apparatus between the effect of multiple-effect multiphase flow evaporimeter, prevent that the solid particle adding in multiphase flow evaporimeter from entering lower 1st effective evaporator, meet microlite with the mobile requirement of feed liquid simultaneously, if old evaporator system transformation, also want to prevent that the bulk dirt sheet after the interior original dirt layer of old evaporimeter is eliminated from stopping up charging apparatus, realize effective conveying of feed liquid between two effects.
Summary of the invention
The invention provides a kind of for charging apparatus and method between the effect of multiple-effect multiphase flow evaporimeter, prevent that the solid particle adding in multiphase flow evaporimeter from entering lower 1st effective evaporator, meet microlite with the mobile requirement of feed liquid simultaneously, if old evaporator system transformation, also want to prevent that the bulk dirt sheet after the interior original dirt layer of old evaporimeter is eliminated from stopping up charging apparatus, realize effective conveying of feed liquid between two effects.
The present invention is achieved in that
For charging apparatus between the effect of multiple-effect multiphase flow evaporimeter, by inclined tube, taper enlarged tube, cover plate, discharge nozzle, form (accompanying drawing 1).Valve control punishment in advance flow is housed on punishment in advance pipeline, can prevent that the solid particle that certain effect adds from entering lower 1st effective evaporator, meet microlite with the mobile requirement of feed liquid, in the time of also can preventing old evaporimeter transformation, the bulk dirt sheet after original dirt layer is eliminated stops up charging apparatus simultaneously.
The inclined tube diameter of above-mentioned charging apparatus determines according to the velocity in pipes of punishment in advance amount, permission, and the angle of inclined tube and horizontal plane is 30～75 °, the directly welding or be connected with flange of the circulation pipe of bottom and multiphase flow evaporimeter, and top is concordant outlet.
The taper enlarged tube of above-mentioned charging apparatus, its underpart diameter is identical with the top outlet of aforementioned inclined tube, can weld together, and also can connect with flange; After the reducing of 10～30 ° of semi-cone angle expands, enlarged-diameter is the lower diameter of 1.5～3.5 times, then becomes columnar structured.In expanding reach, because circulation area increases, feed liquid flowing velocity is slack-off, is less than the free-falling velocity of solid particle, is not enough to carry added solid particle and moves upward, and particle does subsiding movement downwards, and feed liquid upwards flows.
The discharge nozzle of above-mentioned charging apparatus is the pipeline that has rectangular slot, can be also to offer circular hole, elliptical aperture (accompanying drawing 2).The circulation area of the slot offered on pipeline, circular hole, elliptical aperture is not less than discharge nozzle cross-sectional area, and the size of minimum direction is less than added solid particle minimum dimension dmm, preferably d-(0.5～1.8) mm.
The method for designing of charging apparatus adopts the fluidised computational methods of solid particle in hydrodynamics.
Charging apparatus of the present invention simple in structure, strong adaptability can be realized the effective punishment in advance from the downward 1st effective evaporator of certain single-effect evaporator in multiple-effect multiphase flow evaporation process, and punishment in advance process does not have clogging to occur, and punishment in advance is smooth and easy; Being easy to realize serialization produces.
Accompanying drawing explanation
Charging apparatus 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
The making circular hole structure that the strip-shaped tooth crack structure (b) that Fig. 2 (a) is discharge nozzle is discharge nozzle
The specific embodiment
Below in conjunction with accompanying drawing 3, the present invention is introduced more in detail for charging apparatus between the effect of multiple-effect multiphase flow evaporimeter and method.
Accompanying drawing 3 is the two effect multiphase flow sodium chloride solution vapo(u)rization systems of a set for the treatment of capacity 2500kg/h, total evaporation 1500kg/h, the first single-effect evaporator and the second single-effect evaporator are all 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 the second single-effect evaporator, between two effects, be provided with charging apparatus of the present invention.
This charging apparatus is comprised of inclined tube 1, taper enlarged tube 2, cover plate 3, discharge nozzle 4.Inclined tube 1 adopts round tube, caliber 100mm, with circulation pipe angle be 30 °, between inclined tube and circulation pipe adopt be welded to connect.
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 inclined tube diameter, outside diameter 400mm, height 350mm.In this enlarged tube, feed liquid flowing velocity reduces from bottom to top gradually, and movement of particles is to the timesharing of large end, the free-falling velocity of particle is greater than feed liquid flowing velocity, particle sinks, and can not move upward with feed liquid, thereby avoid first to imitate the solid particle adding and enter the second single-effect evaporator.
Charging apparatus top is provided with cover plate for sealing feed liquid.On the cover board have circular hole, discharge nozzle is installed in hole, the diameter of discharge nozzle calculates by permissible velocity of flow in punishment in advance amount and pipe between two effects of technological requirement, this discharge nozzle diameter 50mm, discharge nozzle tube head porch has baffle plate to intercept, pipe shaft has rectangular slot, and total circulation area of slot is 120% of discharge nozzle cross-sectional area, slot width 2mm.Valve 5 is housed on discharging pipeline and regulates punishment in advance flow, to meet the requirement of different punishment in advance amounts.
Charging apparatus of the present invention is simple in structure, and punishment in advance is smooth and easy, without clogging, occurs, and has guaranteed the normal operation continuously of two effect multiphase flow sodium chloride solution vapo(u)rization systems.
Finally it should be noted that: above embodiment is only in order to illustrate the present invention and unrestricted technical scheme described in the invention; Therefore, although this description has been described in detail the present invention with reference to the above embodiments,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement the present invention; And all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (3)
1. one kind for charging apparatus between the effect of multiple-effect multiphase flow evaporimeter, it is characterized in that by inclined tube, taper enlarged tube, cover plate, discharge nozzle composition, on punishment in advance pipeline, there is valve control punishment in advance flow, described inclined tube bottom is directly welded with the circulation pipe of multiphase flow evaporimeter or is connected with flange, described taper enlarged tube small end and inclined tube welding, charging apparatus top is provided with described cover plate for sealing feed liquid, on described cover plate, have circular hole, described discharge nozzle is installed in hole, can prevent that the solid particle that 1st effective evaporator adds from entering lower 1st effective evaporator, meet microlite with the mobile requirement of feed liquid simultaneously, or prevent that in old evaporimeter, original dirt layer is eliminated rear bulk dirt sheet obstruction charging apparatus.
2. as claimed in claim 1 a kind of for charging apparatus between the effect of multiple-effect multiphase flow evaporimeter, the angle that it is characterized in that described inclined tube and horizontal plane is 30～75 °; Described taper enlarged tube is vertical pipe, 10～30 ° of semi-cone angle.
3. as claimed in claim 1 a kind of for charging apparatus between the effect of multiple-effect multiphase flow evaporimeter, it is characterized in that having on described discharge nozzle rectangular slot, or offer circular hole or elliptical aperture.
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 |
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| 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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| CN102671400A CN102671400A (en) | 2012-09-19 |
| CN102671400B true CN102671400B (en) | 2014-05-07 |
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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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| CN102671400A (en) | 2012-09-19 |
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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. |