CN103537107A - Evaporation system and application thereof - Google Patents
Evaporation system and application thereof Download PDFInfo
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- CN103537107A CN103537107A CN201210241380.9A CN201210241380A CN103537107A CN 103537107 A CN103537107 A CN 103537107A CN 201210241380 A CN201210241380 A CN 201210241380A CN 103537107 A CN103537107 A CN 103537107A
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- film evaporator
- falling film
- multiphase flow
- steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Abstract
The invention provides an evaporation system. The evaporation system comprises at least one falling-film evaporator, a multi-phase flow evaporation device and at least one settlement cylinder. According to the efficient evaporation system comprising the falling-film evaporator, the multi-phase flow evaporation device and the like, and an operational method of the efficient evaporation system provided by the invention, the falling-film evaporator with high heat exchange efficiency is organically combined with the multi-phase flow evaporation device with an automatic de-scaling function. The evaporation system is applied to evaporation, concentration and crystallization of a great number of materials in the fields of petrochemical industry, coal chemical industry, water treatment and the like, and is particularly applied to evaporation and concentration or desalination of various kinds of wastewater to realize wastewater zero-discharge. The evaporation system is high in heat efficiency and has functions of preventing scaling and wall-attaching phenomena, the heat exchange efficiency of the device is improved, the cleaning cycle of the device is greatly prolonged, and the production efficiency is improved.
Description
Technical field
The invention belongs to heat exchange field, be specially a kind of heat-exchange system and application thereof of applying steam.
Background technology
Evaporation and concentration and crystallization operation are the chemical engineering unit operations of extensive use, be widely used in petrochemical industry, Coal Chemical Industry, water treatment, desalinization, food pharmaceuticals industry, the industries such as industrial chemicals, in evaporation and concentration and crystallization operation process, ubiquity energy consumption is high, fouling, the problems such as wall built-up, for above problem, under prior art condition, have by adopting falling film evaporator or plate-type evaporator to reach the object that improves reduction of heat exchange efficiency energy consumption, also have by adopting multiphase flow or three-phase flow evaporimeter to solve the problem of fouling and wall built-up, but falling film evaporator or plate-type evaporator can not solve fouling or wall built-up problem because of reasons in structure, in engineering application, run into and have the material of fouling or wall built-up tendency not to be suitable for, multiphase flow or three-phase flow evaporimeter are also because there is the undesirable problem of heat transfer effect in design feature.
From falling film evaporator and multiphase flow vaporising device, have advantage and shortcoming separately, how in conjunction with the two advantage, avoid shortcoming separately, reach better evaporation effect, extension device life-span, be the large problem of pendulum in face of these those skilled in the art.
Summary of the invention
For the weak point of prior art existence, the object of the invention is to propose the high-efficiency evaporating system of multiphase flow vaporising device and falling film evaporator combination.
Another object of the present invention is to propose a kind of method of applying the evaporation material of described vapo(u)rization system.
The concrete technical scheme that realizes above-mentioned purpose is:
, it comprises at least one falling film evaporator, a multiphase flow vaporising device and at least one settlement barrel;
Described falling film evaporator is provided with steam inlet and steam (vapor) outlet, material inlet and material outlet; Described settlement barrel is provided with and is concentrated material inlet, concentrate outlet and supernatant outlet;
The material inlet of described multiphase flow vaporising device is connected with the material outlet of falling film evaporator, and the material inlet that is concentrated of multiphase flow vaporising device material outlet and settlement barrel is connected, and the supernatant outlet of settlement barrel is connected with the material inlet of multiphase flow vaporising device.
Wherein, described vapo(u)rization system also comprises surface condenser and vavuum pump, and the steam (vapor) outlet of falling film evaporator is connected with surface condenser, and surface condenser is connected with vavuum pump.
Wherein, the quantity N of described falling film evaporator is 1-5, and falling film evaporator is connected in series mutually, and the steam (vapor) outlet of N falling film evaporator is connected with surface condenser.The number of N designs as required, but is generally no more than 5, surpasses this number, does not reach the separated object of evaporation, and falling film evaporator is many will increase equipment investment, also can affect economic benefit.
Wherein, described multiphase flow vaporising device comprises multiphase flow evaporimeter and evaporation separation chamber, and multiphase flow evaporimeter is connected with falling film evaporator, and described multiphase flow evaporimeter is provided with heater.
Wherein, described series connection is that the falling film evaporator that connects multiphase flow vaporising device plays counting, the steam (vapor) outlet of previous falling film evaporator is connected with the steam inlet of a rear falling film evaporator, and the material inlet of previous falling film evaporator is connected with the material outlet of a rear falling film evaporator.
Wherein, the number of described settlement barrel is 1-10.
The method of the vapo(u)rization system evaporation material that a kind of the present invention of use proposes, comprise step: material stoste to be evaporated enters falling film evaporator, then enter multiphase flow vaporising device, in multiphase flow vaporising device, be heated and be separated into steam and be concentrated material, being concentrated material enters settlement barrel separation and discharges concentrate, the isolated supernatant of settlement barrel reenters multiphase flow vaporising device, again evaporates.The steam that supernatant evaporation finally obtains can discharge or condensation is reclaimed.
Material to be evaporated enters falling film evaporator and multiphase flow vaporising device successively, and not only heat exchange is abundant, and multiphase flow vaporising device also has the function from scale removal, therefore, is particularly suited for the processing of waste water.
Wherein, for the primary steam heating, first enter multiphase flow vaporising device and carry out heat exchange; In multiphase flow vaporising device, isolated indirect steam enters falling film evaporator, produces the 2nd indirect steam after heat exchange, and through the heat exchange in N falling film evaporator, the indirect steam finally producing from falling film evaporator enters surface condenser.Falling film evaporator is suitable for the processing of the material that viscosity is large.Steam multi-stage heat exchanger, can make the heat energy of steam fully be utilized.Primary steam temperature is 90-300 ℃, according to the difference of material to be evaporated, can select the primary steam that temperature is different.
Wherein, the indirect steam finally producing from falling film evaporator enters surface condenser, by vavuum pump, discharges.
Wherein, described material stoste to be evaporated enters last falling film evaporator at first, and material and steam adopt the mode heat exchange of adverse current.
Beneficial effect of the present invention is:
Specially designed high-efficiency evaporating system and the method for operating thereof comprising from falling film evaporator, multiphase flow vaporising device of the present invention, by very high the combining from falling film evaporator and the multiphase flow vaporising device having from descaling function of heat exchange efficiency, the evaporation and concentration and the crystallization operation that are applicable to a large amount of materials in field such as petrochemical industry, Coal Chemical Industry, water treatment, desalinization, food pharmaceuticals industry, industrial chemicals production, especially be applicable to evaporation and concentration or the desalination of various waste water, realize wastewater zero discharge.It is high and have the function of antiscale, anti-wall cling phenomenon that this vapo(u)rization system has heat exchange efficiency, not only greatly improved the heat exchange efficiency of device, also greatly extended washing the effect cycle of device, improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the vapo(u)rization system of the embodiment of the present invention 1.
In Fig. 1,1 is multiphase flow evaporimeter, and 2 is I effect falling film evaporator, and 3 is II effect falling film evaporator, 4 is III effect falling film evaporator, 5 is IV effect falling film evaporator, and 6 is V effect falling film evaporator, and 7 is surface condenser, 13 is vavuum pump, 9,10,11 is settlement barrel, and 12 is multiphase flow evaporation separation chamber, and 4,8,15,16,17,18 is circulating pump.
The specific embodiment
Now with following most preferred embodiment, the present invention is described, but is not used for limiting the scope of the invention.
In embodiment, unless specified otherwise, the equipment using and method are equipment and the method for this area routine.
Embodiment 1: a kind of high-efficiency evaporating system
Referring to Fig. 1.
The vapo(u)rization system of the present embodiment comprises 2,3,4,5,6 and multiphase flow vaporising devices of 5 falling film evaporators, and surface condenser 7, vavuum pump 13,6 circulating pumps 8,14,15,16,17,18,3 settlement barrels 9,10,11, steam pipe line and material pipeline, in Fig. 1, dotted line is steam pipe line, solid line is material pipeline.
This multiphase flow vaporising device comprises cylindrical multiphase flow evaporimeter 1 and multiphase flow evaporation separation chamber 12, and the volume of multiphase flow evaporation separation chamber 12 is 10m
3.Steam inlet in the middle part of heterogeneous evaporimeter 1 is provided with and the steam (vapor) outlet on top are, the material outlet at the material inlet of bottom and top; 3 settlement barrels 9,10,11 are cylindrical, comprise respectively the concentrate outlet that is concentrated liquid entrance, bottom at its top and the supernatant outlet on top.
The material inlet of multiphase flow evaporimeter 1 is connected by circulating pump 14, material pipeline and the material outlet of I effect falling film evaporator 2.The material outlet of multiphase flow evaporimeter 1 is connected with the material inlet of evaporation separation chamber 12 by material pipeline, the liquid outlet that is concentrated of multiphase flow evaporation separation chamber 12 is connected by material pipeline with the liquid entrance that is concentrated of settlement barrel 9,10,11, and the muddy water outlet of settlement barrel 9,10,11 is connected with the material inlet of multiphase flow evaporimeter 1 with material pipeline by circulating pump 8.5 falling film evaporator volumes are 10m
3.Falling film evaporator is connected in series, and the steam (vapor) outlet of V effect falling film evaporator 6 is connected by steam pipe line with surface condenser 7, and surface condenser 7 is connected with vavuum pump 13.
Embodiment 2: the vapo(u)rization system evaporation material that uses embodiment 1
Needing concentrated material is 5wt% brine waste, the corundum that the solid particle in multiphase flow vaporising device is inertia (diameter 3-5mm) particle.The charging rate of brine waste is 5000Kg/h.
First brine waste enters V effect falling film evaporator 6, by circulating pump 18, enter successively IV effect falling film evaporator 5, circulating pump 17, III effect falling film evaporator 4, circulating pump 16, II effect falling film evaporator 3, circulating pump 15, I effect falling film evaporator 2, circulating pump 14, multiphase flow evaporimeter 1, multiphase flow evaporation separation chamber 12, settlement barrel 9,10,11.By sedimentation, the concentrated salt slurry (concentrate) obtaining is discharged to settlement barrel 9,10,11, waste water (supernatant) in settlement barrel top is squeezed into multiphase flow evaporimeter 1 again by circulating pump 8 simultaneously, again evaporates the concentrated salt slurry of final formation and discharges from settlement barrel 9,10,11.
Steam flow is: first primary steam enters multiphase flow evaporimeter 1, the indirect steam simultaneously producing from multiphase flow evaporation separation chamber 12 enters I effect falling film evaporator 2, the indirect steam that I effect falling film evaporator 2 produces enters II effect falling film evaporator 3, the indirect steam that II effect falling film evaporator 3 produces enters III effect falling film evaporator 4, the indirect steam that III effect falling film evaporator 4 produces enters IV effect falling film evaporator 5, the indirect steam that IV effect falling film evaporator 5 produces enters V effect falling film evaporator 6, the indirect steam that V effect falling film evaporator 6 produces enters surface condenser 7, by vavuum pump 13, discharge.Steam reduces successively from I effect falling film evaporator 2 to V effect falling film evaporator 6 temperature, and 200 ℃ of initial temperatures, are finally 105 ℃.Steam consumption quantity 2000kg/h.
The steam impurities content that vavuum pump is discharged meets discharge standard, and its liquid electric conductivity is at 1 μ scm
-1below.
For the dirt layer of heat exchange pipe of evaporator inner surface in production process, can be removed voluntarily by the solid particle having from the multiphase flow vaporising device of descaling function, so effectively prevented the obstruction of block dirt layer to evaporimeter.
Embodiment 3: for vapo(u)rization system and the evaporation process of the large material of viscosity
The vapo(u)rization system of the present embodiment comprises multiphase flow evaporimeter, multiphase flow evaporation separation chamber.The volume of multiphase flow evaporation separation chamber is 5m
3.2 falling film evaporators, surface condenser, vavuum pump, 3 circulating pumps, 3 settlement barrels, steam pipe line and material pipeline.Its connected mode and relative position are identical with embodiment 1.Falling film evaporator volume is 5m
3.
Needing concentrated material is 12wt% cornstarch slurry, viscosity 2.4 centipoises.Solid particle in multiphase flow vaporising device is corundum (diameter 3-5mm) particle of inertia.
The flow process of material and steam is identical with embodiment 2.Needing the charging rate of concentrated material is 600g/min, steam consumption quantity 100kg/h.The vacuum of controlling falling film evaporator with vavuum pump, the temperature of primary steam is 95 ℃, the indirect steam temperature finally producing is 44 ℃.From settlement barrel, obtain the concentrated slurry that concentration is 60wt%, viscosity 12 centipoises.The steam that surface condenser produces discharges by vavuum pump.
Above embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various modification and improvement that the common engineers and technicians in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (10)
1. a vapo(u)rization system, is characterized in that, comprises at least one falling film evaporator, multiphase flow vaporising device and at least one settlement barrel;
Described falling film evaporator is provided with steam inlet and steam (vapor) outlet, material inlet and material outlet; Described settlement barrel is provided with and is concentrated material inlet, concentrate outlet and supernatant outlet;
The material inlet of described multiphase flow vaporising device is connected with the material outlet of falling film evaporator, and the material inlet that is concentrated of multiphase flow vaporising device material outlet and settlement barrel is connected, and the supernatant outlet of settlement barrel is connected with the material inlet of multiphase flow vaporising device.
2. vapo(u)rization system as claimed in claim 1, is characterized in that, described vapo(u)rization system also comprises surface condenser and vavuum pump, and the steam (vapor) outlet of falling film evaporator is connected with surface condenser, and surface condenser is connected with vavuum pump.
3. the vapo(u)rization system as described in as arbitrary in claim 1 or 2, is characterized in that, the quantity N of described falling film evaporator is 1-5, and falling film evaporator is connected in series mutually, and the steam (vapor) outlet of last falling film evaporator is connected with surface condenser.
4. vapo(u)rization system as claimed in claim 1, is characterized in that, described multiphase flow vaporising device comprises multiphase flow evaporimeter and evaporation separation chamber, and described evaporation separation chamber is connected with described falling film evaporator, and described multiphase flow evaporimeter is provided with heater.
5. vapo(u)rization system as claimed in claim 3, it is characterized in that, described series connection is that the falling film evaporator that connects multiphase flow vaporising device plays counting, the steam (vapor) outlet of previous falling film evaporator is connected with the steam inlet of a rear falling film evaporator, and the material inlet of previous falling film evaporator is connected with the material outlet of a rear falling film evaporator.
6. vapo(u)rization system as claimed in claim 1, is characterized in that, the number of described settlement barrel is 1-10.
7. a right to use requires the method for 1 ~ 6 arbitrary described vapo(u)rization system evaporation material, it is characterized in that, material stoste to be evaporated enters falling film evaporator, then enter multiphase flow vaporising device, in multiphase flow vaporising device, be heated and be separated into steam and be concentrated material, be concentrated material and enter settlement barrel separation and discharge concentrate, the isolated supernatant of settlement barrel reenters multiphase flow vaporising device, again evaporates.
8. method as claimed in claim 7, is characterized in that, for the primary steam heating, enters the heat exchange of multiphase flow vaporising device; The indirect steam producing in multiphase flow vaporising device enters falling film evaporator, produces the 2nd indirect steam after heat exchange, and through the heat exchange in N falling film evaporator, the indirect steam finally producing from falling film evaporator enters surface condenser.
9. method as claimed in claim 8, is characterized in that, the indirect steam that last falling film evaporator produces enters surface condenser, by vavuum pump, discharges.
10. the method as described in as arbitrary in claim 6 ~ 9, is characterized in that, described material stoste to be evaporated is introduced into last falling film evaporator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241380.9A CN103537107B (en) | 2012-07-11 | 2012-07-11 | Evaporation system and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210241380.9A CN103537107B (en) | 2012-07-11 | 2012-07-11 | Evaporation system and application thereof |
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| Publication Number | Publication Date |
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| CN103537107A true CN103537107A (en) | 2014-01-29 |
| CN103537107B CN103537107B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210241380.9A Active CN103537107B (en) | 2012-07-11 | 2012-07-11 | Evaporation system and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771294A (en) * | 2016-04-29 | 2016-07-20 | 云南文山铝业有限公司 | Falling-film evaporator set |
| CN111375218A (en) * | 2020-03-30 | 2020-07-07 | 山东凯斯达机械制造有限公司 | Molasses concentrating device and using method and process thereof |
Citations (4)
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| EP0681153A1 (en) * | 1994-05-04 | 1995-11-08 | Linde Aktiengesellschaft | Process and apparatus for the low temperature separation of air |
| CN1579943A (en) * | 2004-05-14 | 2005-02-16 | 山东铝业股份有限公司 | Carbon fracture mother liquor evaporation, crystallization and salting process |
| CN101306845A (en) * | 2007-08-13 | 2008-11-19 | 姜新明 | Solar desalination process and apparatus |
| CN202700108U (en) * | 2012-07-11 | 2013-01-30 | 蓝星(北京)化工机械有限公司 | Evaporation system |
-
2012
- 2012-07-11 CN CN201210241380.9A patent/CN103537107B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0681153A1 (en) * | 1994-05-04 | 1995-11-08 | Linde Aktiengesellschaft | Process and apparatus for the low temperature separation of air |
| CN1579943A (en) * | 2004-05-14 | 2005-02-16 | 山东铝业股份有限公司 | Carbon fracture mother liquor evaporation, crystallization and salting process |
| CN101306845A (en) * | 2007-08-13 | 2008-11-19 | 姜新明 | Solar desalination process and apparatus |
| CN202700108U (en) * | 2012-07-11 | 2013-01-30 | 蓝星(北京)化工机械有限公司 | Evaporation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771294A (en) * | 2016-04-29 | 2016-07-20 | 云南文山铝业有限公司 | Falling-film evaporator set |
| CN111375218A (en) * | 2020-03-30 | 2020-07-07 | 山东凯斯达机械制造有限公司 | Molasses concentrating device and using method and process thereof |
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| CN103537107B (en) | 2015-04-22 |
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