CN1077802C - Boiling evaporator with forced heat-transfer and scale-preventing performance and its operation process - Google Patents
Boiling evaporator with forced heat-transfer and scale-preventing performance and its operation process Download PDFInfo
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- CN1077802C CN1077802C CN96120008A CN96120008A CN1077802C CN 1077802 C CN1077802 C CN 1077802C CN 96120008 A CN96120008 A CN 96120008A CN 96120008 A CN96120008 A CN 96120008A CN 1077802 C CN1077802 C CN 1077802C
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Abstract
The present invention relates to a boiling and evaporating device with heat transfer enhancement and scale prevention performance and an operating method, and belongs to techniques of heat transfer and evaporation. The present invention is characterized in that the present invention provides a boiling and evaporating device with two centrifugal separators and an operating method by adding inert granules in vapor-liquid-solid three-phase flow. The present invention can enhance heat transfer, and prevent the wall surface from forming scale in the boiling and evaporating processes. The present invention can be widely used for boiling and evaporating solutions of bittern, mirabilite, sodium hydroxide, calcium chloride, alumina, medicines, foods, etc. The technique can also be used for fields of distillation and heat transfer processes, boiler operation, gravity heat pipes, waste water treatment, environmental protection, etc.
Description
The present invention relates to a kind of explosive evaporation device and method of operating with augmentation of heat transfer, good antiscale property performance.It belongs to the heat transfer evaporation technique.
The explosive evaporation process is widely used in all trades and professions such as petroleum refining, chemical industry, light industry, food, the energy, wastewater treatment, environmental protection and the technical field.Its key problem in technology problem is: the one, and heat transfer intensification, the 2nd, antiscale or scale removal (said here dirt mainly is meant solute crystalline solid and other dirt and the bonding solid layer of wall in the solution).Especially in the evaporation process of solution such as bittern, saltcake, caustic soda, calcium chloride, aluminium oxide and food, medicine, above-mentioned augmentation of heat transfer and anti-, descalling technique is then even more important.For explosive evaporation, existing augmentation of heat transfer technology is to adopt the pump delivered solution to realize to realize the forced circulation mode with certain flow rate.Antiscale then is a method of taking to avoid explosive evaporation in heating clamber, and this method has reduced heat transfer efficiency, has enlarged the heat exchange area of equipment, and the cost of being paid is very big often.Form the way of stopping work and remove in the back as for the dirt layer, not only reduced the effective production time, reduced output, and consumed human and material resources, increased the cost of product.
Purpose of the present invention is to provide a kind of explosive evaporation device and method of operating thereof with augmentation of heat transfer, good antiscale property performance, thereby can reduce the energy consumption and the material consumption of explosive evaporation process effectively, can enhance productivity greatly again.
For achieving the above object, the present invention is realized by following technical proposals.Comprise by evaporimeter, NaOH solution tank NaOH, solution pump, gas gatherer, receiving tank and connecting pipe constituted between them explosive evaporation device, it is characterized in that: be provided with two cyclones, and be achieved as follows technical process, the evaporimeter top exit links to each other with one of them separator, this separator lower part outlet links to each other with base of evaporator and solution pump outlet, the outlet of separator top links to each other with another separator, this separator top exit links to each other with the gas gatherer, its bottom connects receiving tank, and the side is provided with outlet and links to each other with the solution pump inlet.
Use the explosive evaporation device of above-mentioned feature, the general operation method can adopt: Gu add a certain amount of metal or nonmetallic inert particle body with given shape and size in vapour-liquid-three-phase stream in evaporimeter, this inert particle body can be spherical in shape, or be short cylindrical, or be hollow ball, or be short annular, and the equivalent diameter of granule is 0.5～15mm, the addition of granule is 1～30% of an evaporimeter total capacity.
Accompanying drawing is the schematic diagram of apparatus of the present invention.Wherein 1 is that evaporimeter, 2 is that cyclone, 3 is that gas gatherer, 4 is that cyclone, 5 is that receiving tank, 6 is that NaOH solution tank NaOH, 7 is a solution pump.
Now apparatus of the present invention and method of operating are done comparatively detailed being described as follows with regard to accompanying drawing.Solution and inert particle enter evaporimeter, Gu just formed vapour-liquid-three-phase stream after being heated, wherein the inert particle body then forms the particle flux with certain movement flow pattern, this particle flux constantly with wall collision, and collision mutually between particle, disturbance and destroyed the wall boundary layer, therefore not only strengthened heat transfer, and crystalline solid and dirt also be difficult to form the dirt layer at wall, brought into play augmentation of heat transfer and stoped the dual usefulness of fouling, thereby can improve the production capacity of evaporimeter greatly.After the three-phase that is flowed out by evaporimeter flows to separator 2, through centrifugation, the inert particle body is settled down to the pump discharge place with solution inflow evaporator more together, so just formed the inert particle body from evaporimeter to separator 2, flow circuit from separator 2 to evaporimeter again, in this flow circuit, Gu realized separating and the process of mixing of inert particle body and vapour-liquid-three-phase stream.Admittedly the vapour-liquid that flows out by separator 2 tops-enter separator 4, after separating, solution with high concentrations of solutes enters receiving tank from its bottom, the solvent gas enters the gas gatherer by its top, residual solution is then discharged to converge with material solution through pump intake by the separator side exit and is entered evaporimeter, after heating, again to separator 2 and separator 4, then formed the systemic circulation of flow of solution, solution has been realized concentrating and the separating of solvent and solute in this circulation.
Evaporimeter in apparatus of the present invention is compared with existing evaporimeter, and its coefficient of heat transfer can improve 2～3 times, and can accomplish long-term continued operation operation, and scale removal does not stop production.
Explosive evaporation device of the present invention and method of operating thereof not only can be used for the explosive evaporation of solution such as bittern, saltcake, caustic soda, calcium chloride, aluminium oxide, medicine, food, also can be used for distillation and diabatic process, and field such as boiler operatiopn and gravity assisted heat pipe, wastewater treatment, environmental protection, and all can reach the purpose of augmentation of heat transfer and antiscale.
Claims (1)
1, a kind of have an augmentation of heat transfer, the explosive evaporation device and the method for operating of good antiscale property performance, vaporising device is to comprise by evaporimeter, NaOH solution tank NaOH, solution pump, gas gatherer and the connecting pipe between them constitute, it is characterized in that: be provided with 2 cyclones, and realized following technical process, the evaporimeter top exit links to each other with a separator, outlet links to each other this separator lower part outlet with solution pump with base of evaporator, top has an outlet to link to each other with another separator, the top of this separator has an outlet to link to each other with the gas gatherer, the outlet of bottom links to each other with receiving tank, and its side exit links to each other with the inlet of solution pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120008A CN1077802C (en) | 1996-10-08 | 1996-10-08 | Boiling evaporator with forced heat-transfer and scale-preventing performance and its operation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120008A CN1077802C (en) | 1996-10-08 | 1996-10-08 | Boiling evaporator with forced heat-transfer and scale-preventing performance and its operation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1153676A CN1153676A (en) | 1997-07-09 |
| CN1077802C true CN1077802C (en) | 2002-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120008A Expired - Fee Related CN1077802C (en) | 1996-10-08 | 1996-10-08 | Boiling evaporator with forced heat-transfer and scale-preventing performance and its operation process |
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| Country | Link |
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| CN (1) | CN1077802C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607143B (en) * | 2008-06-17 | 2010-12-08 | 上海亿华科技有限公司 | Calcium lactate three-effect counter flow evaporation plant |
| CN102921179B (en) * | 2012-10-23 | 2015-04-01 | 江苏华泰重工装备有限公司 | Full-automatic descaling multi-effect evaporator |
| CN103252103A (en) * | 2013-06-02 | 2013-08-21 | 上海亿华科技有限公司 | Evaporator and method for preventing heating chamber from being blocked during evaporation and concentration of sodium permanganate |
| CN105311847B (en) * | 2014-07-11 | 2017-05-10 | 江苏华泰重工装备有限公司 | Improved energy-saving high-efficiency automatic de-scaling evaporator |
| CN105344122B (en) * | 2015-09-02 | 2017-07-07 | 湖北合加环境设备有限公司 | A kind of horizontal falling film evaporator of On Line Foul Removing Technology |
| CN105833563A (en) * | 2016-05-12 | 2016-08-10 | 江阴市江中设备制造有限公司 | Non-scaling heating assembly and evaporative crystallization device with same |
| CN106215438A (en) * | 2016-08-26 | 2016-12-14 | 海洲环保集团有限公司 | Three-phase fluidized bed evaporator |
| CN109350977A (en) * | 2018-11-02 | 2019-02-19 | 清华大学 | Steam pressure-reducing device and working method |
| NL2023243B1 (en) * | 2019-05-31 | 2020-12-08 | Klaren Int B V | Waste water treatment |
| CN111389038A (en) * | 2020-04-16 | 2020-07-10 | 天津天大清能环境工程有限公司 | Anti-scaling evaporation concentration system and evaporation concentration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501609A (en) * | 1975-01-18 | 1978-02-22 | Volgogradsky Politekh Inst | Tube apparatus |
| US4398594A (en) * | 1981-05-12 | 1983-08-16 | Esmil Bv | Apparatus for use in carrying out a physical and/or chemical process, for example a heat exchanger |
| US4522252A (en) * | 1982-05-21 | 1985-06-11 | Esmil B.V. | Method of operating a liquid-liquid heat exchanger |
| CN1066326A (en) * | 1991-04-27 | 1992-11-18 | 湘潭大学 | Heat-exchange apparatus having tubular conduit with liquid/solid fluidizaiton therein |
| CN1022644C (en) * | 1989-10-12 | 1993-11-03 | 湘潭大学 | Stopped pipe type fluidizing washing and strengthening heat transfer device |
-
1996
- 1996-10-08 CN CN96120008A patent/CN1077802C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501609A (en) * | 1975-01-18 | 1978-02-22 | Volgogradsky Politekh Inst | Tube apparatus |
| US4398594A (en) * | 1981-05-12 | 1983-08-16 | Esmil Bv | Apparatus for use in carrying out a physical and/or chemical process, for example a heat exchanger |
| US4522252A (en) * | 1982-05-21 | 1985-06-11 | Esmil B.V. | Method of operating a liquid-liquid heat exchanger |
| CN1022644C (en) * | 1989-10-12 | 1993-11-03 | 湘潭大学 | Stopped pipe type fluidizing washing and strengthening heat transfer device |
| CN1066326A (en) * | 1991-04-27 | 1992-11-18 | 湘潭大学 | Heat-exchange apparatus having tubular conduit with liquid/solid fluidizaiton therein |
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| Publication number | Publication date |
|---|---|
| CN1153676A (en) | 1997-07-09 |
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