CN101543682B - Concentrating system and concentrating method of alcohol waste liquid - Google Patents
Concentrating system and concentrating method of alcohol waste liquid Download PDFInfo
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- CN101543682B CN101543682B CN2009100222453A CN200910022245A CN101543682B CN 101543682 B CN101543682 B CN 101543682B CN 2009100222453 A CN2009100222453 A CN 2009100222453A CN 200910022245 A CN200910022245 A CN 200910022245A CN 101543682 B CN101543682 B CN 101543682B
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Abstract
The invention belongs to the field of alcohol preparation, relates to energy-saving and drainage-reduction treatment of alcohol waste liquid, and discloses a concentrating system and a concentrating method of alcohol waste liquid. The system comprises a 1st effective evaporator, a 2 nd effective evaporator and a 3rd effective evaporator. In alcohol production, external steam enters the1steffective evaporator, produced 1st effective juice vapor is taken as the heat source of the 2 nd effective evaporator, followed by analogy, 2 nd effective juice vapor produced by the 2 nd effective evaporatoris taken as the heat source of the I3rd effective evaporator, 3rd effective juice vapor produced by the 3rd effective evaporator directly enters a distilling tower kettle, and the alcohol is separated in the distilling tower; original alcohol waste liquid is concentrated by the 3rd effective evaporator; and steam energy can be utilized repeatedly by coupling distilling steam and evaporating steam. The alcohol waste liquid is concentrated when distilling process is finished, thereby the concentration steam is reduced.
Description
Technical field
The invention belongs to the alcohol preparation field, the energy-saving and emission-reduction that relate to alcohol distiller's solution are handled, particularly a kind of concentration systems of alcohol distiller's solution and method for concentration thereof.
Background technology
Molasses-spirit lees liquid (being mainly caramel colorant) color is dark and the COD index is higher, handles by bio anaerobic to be difficult to dispel color and qualified discharge.At present, comparatively desirable method is to adopt to concentrate burning disposal molasses vinasse.But, generally speaking, produce 1 ton of alcohol and produce the poor liquid of 12-14 ton, concentrate poor liquid per ton and need consume 0.3 ton of steam, the steam that calculates the evaporation section consumption successively will make alcohol cost per ton increase by 300 yuan (steam per ton is by 100 yuan of calculating).Therefore, under the international and domestic trend of energy-saving and emission-reduction, the concentration expense of alcohol distiller's solution is the key factor that influences the Alcohol Production cost.
Summary of the invention
The object of the present invention is to provide a kind of concentration systems and method for concentration thereof of alcohol distiller's solution, can make full use of the distilling apparatus in the Alcohol Production, make to concentrate and significantly reduce, thereby reach energy-saving and cost-reducing effect with steam.
In order to reach the foregoing invention purpose, the present invention adopts following scheme to be achieved.
1, a kind of concentration systems of alcohol distiller's solution, comprise destilling tower, it is characterized in that, also comprise: the vinasse pump, I effect, II are imitated, III is imitated the condensate water bag, imitate the I single-effect evaporator that flash chamber is formed by I effect heater and I, imitate the II single-effect evaporator that flash chamber is formed by II effect heater and II, and III is imitated heater, described III effect heater and destilling tower composition III single-effect evaporator; Described vinasse pump discharge is communicated with III heater, II effect heater, II effect flash chamber, I effect heater and I successively by pipeline and imitates flash chamber, and described vinasse pump pumps into former poor liquid, and I is imitated the concentrated liquid that is pickled with grains or in wine of outlet at bottom discharge of flash chamber; Described I is imitated the thermal source inlet steam-out (SO) of heater, and its thermal source outlet is communicated with I and imitates the condensate water bag; The thermal source inlet that described II is imitated heater is communicated with the juice vapour outlet that I is imitated the flash chamber top, and its thermal source outlet is communicated with II and imitates the condensate water bag; The thermal source inlet that described III is imitated heater is communicated with the juice vapour outlet that II is imitated the flash chamber top, and its thermal source outlet is communicated with III and imitates the condensate water bag; The juice vapour outlet that described III is imitated the heater top is communicated with destilling tower, and its juice vapour is as the thermal source of destilling tower.
The further characteristics of technique scheme are: described destilling tower is topping still or rectifying column.
2, a kind of method for concentration of alcohol distiller's solution, based on the concentration systems of above-mentioned alcohol distiller's solution, its characteristics are that the concentration systems that former poor liquid pump is gone into alcohol distiller's solution concentrates, concrete concentration step is as follows:
At first, former poor liquid is pumped into III by the vinasse pump imitate the heater heating, imitate heater heating, the flash distillation of I effect flash chamber through the heating of II effect heater, the flash distillation of II effect flash chamber, I successively again; And successively with the thermal source of steam-out (SO) as I effect heater, I is imitated the thermal source of the I effect juice steam of flash chamber generation as II effect heater, II is imitated the thermal source of the II effect juice steam of flash chamber generation, III is imitated the thermal source of the III effect juice steam of heater generation as destilling tower as III effect heater; At last, imitate the concentrated poor liquid of outlet at bottom discharge of flash chamber from I.
Further improvement in the technical proposal and characteristics are:
(a), former poor liquid is divided into two-way by after the vinasse pump pressurization, the one tunnel to pump into destilling tower be that the concentration systems of the alcohol distiller's solution of topping still concentrates, and it is that the concentration systems of the alcohol distiller's solution of rectifying column concentrates that another road pumps into destilling tower.
(b), described steam-out (SO) temperature is that 140 ℃, pressure are 0.35Mpa; The temperature that I is imitated in the flash vessel is 127 ℃, and pressure is 0.25Mpa; The temperature that II is imitated in the flash vessel is 118 ℃, and pressure is 0.19Mpa; The temperature of destilling tower lower curtate is 108 ℃, and pressure is 0.14Mpa.
The present invention is provided with I single-effect evaporator, II single-effect evaporator and III single-effect evaporator, when Alcohol Production, steam-out (SO) is entered by the I single-effect evaporator, the I effect juice steam that produces is as the thermal source of II single-effect evaporator, and the like, the II effect juice steam that the II single-effect evaporator produces is as the thermal source of III single-effect evaporator, and the III effect juice steam of being imitated the heater generation by III directly enters distillation Tata still, makes alcohol obtain separating in destilling tower; Utilize triple effect evaporator that former wine lees liquor is concentrated, and adopt distillation to use vapour and evaporate with the effective coupling of vapour, steam energy is repeatedly utilized, finish under the prerequisite of distil process, alcohol distiller's solution has also obtained concentrating, and uses vapour thereby reduced to concentrate.On energy-saving and cost-reducing basis, reached the requirement of environment protection emission.
Description of drawings
Fig. 1 is the concentration systems figure of the alcohol distiller's solution of topping still for destilling tower;
Fig. 2 is the concentration systems figure of the alcohol distiller's solution of rectifying column for destilling tower;
Among the figure: 1, I is imitated heater; 2, I is imitated flash chamber; 3, II is imitated heater; 4, II is imitated flash chamber; 5, III is imitated heater; 6, topping still; 6 ', rectifying column; 7, vinasse pump; 8, I is imitated the condensate water bag; 9, II is imitated the condensate water bag; 10, III is imitated the condensate water bag.
The specific embodiment
With reference to Fig. 1, destilling tower is the concentration systems of the alcohol distiller's solution of topping still, mainly comprise: topping still 6, vinasse pump 7, I effect, II are imitated, III is imitated condensate water bag 8,9,10, imitate the I single-effect evaporator that flash chamber 2 is formed by I effect heater 1 and I, imitate the II single-effect evaporator that flash chamber 4 is formed by II effect heater 3 and II, and III heater 5, III heater 5 and topping still 6 are formed the III single-effect evaporator.
7 outlets of vinasse pump are communicated with III heater 5, II effect heater 3, II effect flash chamber 4, I effect heater 3 and I successively by pipeline and imitate flash chamber 2, and vinasse pump 7 pumps into former poor liquid, and I is imitated the concentrated liquid that is pickled with grains or in wine of outlet at bottom discharge of flash chamber 2.Be specially: 7 outlets of vinasse pump are communicated with the bottom inlet of III heater 5, the outlet at bottom of III heater 5 is communicated with the bottom inlet that II is imitated heater 3, II is imitated heater 3 and is communicated with II effect flash chamber 4, the outlet at bottom that II is imitated flash chamber 4 is communicated with the bottom inlet that I is imitated heater 1, I is imitated heater 1 and is communicated with I effect flash chamber 2, and the outlet at bottom discharge that I is imitated flash chamber 2 concentrates poor liquid.
I is imitated the thermal source inlet steam-out (SO) of heater 1, and its thermal source outlet is communicated with I and imitates condensate water bag 8; The thermal source inlet that II is imitated heater 3 is communicated with the juice vapour outlet that I is imitated flash chamber 2 tops, and its thermal source outlet is communicated with II and imitates condensate water bag 9; The thermal source inlet that III is imitated heater 5 is communicated with the juice vapour outlet that II is imitated flash chamber 4 tops, and its thermal source outlet is communicated with III and imitates condensate water bag 10; III is imitated the thermal source inlet of the juice vapour outlet connection topping still 6 at heater 5 tops, and former poor liquid is discharged in topping still 6 bottoms.
With reference to Fig. 2, destilling tower is the concentration systems of the alcohol distiller's solution of rectifying column, with destilling tower be the structural similarity of concentration systems of the alcohol distiller's solution of rectifying column, can distinguish shared I effect, II effect, III effect condensate water bag 7,8,9 and vinasse pump 7, difference is: the juice vapour outlet that III is imitated heater 5 tops be communicated with rectifying column 6 ' the thermal source inlet, the poor liquid concentration that discharge rectifying column 6 ' bottom is low, qualified discharge after sewage disposal; The former poor liquid that feeds III effect heater 5 bottom inlets comes from the topping still bottom and discharges former poor liquid, and being shunted by vinasse pump 7 pressurization backs provides.
Because the temperature requirement of topping still 6, rectifying column 6 ' bottom is 108 ℃, corresponding pressure is 0.14Mpa, therefore, according to the elevation of boiling point and the requirement of heat transfer temperature difference of mash, optimum process parameters is: the temperature that II is imitated in the flash vessel 4 is 118 ℃, and pressure is 0.19Mpa, the temperature that I is imitated in the flash vessel device 2 is 127 ℃, pressure is 0.25Mpa, and the temperature of steam-out (SO) is 140 ℃, and pressure is 0.35Mpa.
In Alcohol Production, unite and use destilling tower to be the concentration systems of the alcohol distiller's solution of topping still and destilling tower concentration systems as the alcohol distiller's solution of rectifying column, can utilize the existing equipment of Alcohol Production greatly, realize concentrating and energy-saving and emission-reduction of alcohol distiller's solution to greatest extent.Two cover system cooperations can make the concentration of alcohol distiller's solution reach 55% solid content requirement.
Embodiment:
To produce 30000 tons of molasses-spirit factories per year is example (not considering heat loss).Karusen at first enters topping still, and flow is 51t/h, and solid content is 12%.At destilling tower is the concentration systems (abbreviation: system one) of the alcohol distiller's solution of topping still, the III of system one is imitated heater under the effect of juice vapour, crude alcohol is heated volatilization, vinasse are pumped into III in the system one and imitate heater and system two (destilling tower is the concentration systems of the alcohol distiller's solution of rectifying column, be called for short: the III system two) is imitated heater, and the dispense flow rate in system one and the system two is respectively 21t/h.
In system one, the flow through II of system one of poor liquid is imitated heater, imitates at I under the effect of flash chamber juice vapour, has the moisture of 5.67t/h to imitate flash chamber at II approximately and is evaporated to juice vapour, and the juice vapour that II is imitated flash chamber is used for the thermal source that III is imitated heater.Concentrate follow-up afterflow and imitate heater through I, use Steam Heating in I effect heater, and then imitate the about 5.67t/h of flash chamber transpiring moisture through I, the juice vapour that I is imitated flash chamber is used for the thermal source that II is imitated heater, obtain concentrating poor liquid at last and imitate the discharge of flash chamber bottom from this effect, flow is about 4t/h.By I imitate, II is imitated, III is imitated condensate water that heater discharges and entered respectively and respectively imitate the condensate water bag, recycle.
In system two, poor liquid is by the vinasse pump 6 in the system one, and flow is 21t/h, and poor liquid is imitated under the effect of heater at the III of system two, the juice vapour that per hour produces 5.67t/h is directly as the heating source of rectifying column, and the surplus water that heats up in a steamer with rectifying column after the heat release discharges.Imitating poor liquid that heater concentrates through III is that the 15.33t/h II that flows through is imitated heater, imitates at I under the juice vapour effect of flash chamber, has the moisture of 5.67t/h to imitate flash chamber at II approximately and is evaporated, and the juice vapour that II is imitated flash chamber is used for the thermal source that III is imitated heater.Poor liquid after concentrating the once more I that continues to flow through is imitated heater, flow is 9.66t/h, in I effect heater, use Steam Heating, and then through the about 5.67t/h of I effect flash chamber transpiring moisture, the juice vapour that I is imitated flash chamber is used for the thermal source that II is imitated heater, obtain concentrating poor liquid at last and imitate the discharge of flash chamber bottom from this effect, flow is about 4t/h.I is imitated, II is imitated, III is imitated condensate water that heater discharges and entered respectively and respectively imitate the condensate water bag in the system one, recycles.
Two system combined uses, the total flow that concentrates poor liquid is 8t/h, its solid content is 60%, meets further environmental protection treatment and requires (55% solid content); Because the benefit that the concentrated steam consumption of minimizing brings is about 9,000,000 yuan every year.
Claims (5)
1. the concentration systems of an alcohol distiller's solution, comprise destilling tower, it is characterized in that, also comprise: vinasse pump (7), I effect, II are imitated, III is imitated condensate water bag (8,9,10), imitate the I single-effect evaporator that flash chamber (2) is formed by I effect heater (1) and I, imitate the II single-effect evaporator that flash chamber (4) is formed by II effect heater (3) and II, and III is imitated heater (5), described III effect heater (5) and destilling tower composition III single-effect evaporator; Described vinasse pump (7) outlet is communicated with III effect heater (5), II effect heater (3), II effect flash chamber (4), I effect heater (1) and I successively by pipeline and imitates flash chamber (2), described vinasse pump (7) pumps into former poor liquid, and the outlet at bottom discharge that I is imitated flash chamber (2) concentrates poor liquid; Described I is imitated the thermal source inlet steam-out (SO) of heater (1), and its thermal source outlet is communicated with I and imitates condensate water bag (8); The thermal source inlet that described II is imitated heater (3) is communicated with the juice vapour outlet that I is imitated flash chamber (2) top, and its thermal source outlet is communicated with II and imitates condensate water bag (9); The thermal source inlet that described III is imitated heater (5) is communicated with the juice vapour outlet that II is imitated flash chamber (4) top, and its thermal source outlet is communicated with III and imitates condensate water bag (10); The juice vapour outlet that described III is imitated heater (5) top is communicated with destilling tower, and its juice vapour is as the thermal source of destilling tower.
2. the concentration systems of a kind of alcohol distiller's solution according to claim 1 is characterized in that, described destilling tower is topping still (6) or rectifying column (6 ').
3. the method for concentration of an alcohol distiller's solution, the concentration systems based on the described alcohol distiller's solution of claim 1 is characterized in that, and the concentration systems that former poor liquid pump is gone into alcohol distiller's solution concentrates, and concrete concentration step is as follows:
At first, former poor liquid is pumped into III by vinasse pump (7) imitate the heater heating, imitate heater (1) heating, the flash distillation of I effect flash chamber (2) through II effect heater (3) heating, the flash distillation of II effect flash chamber (4), I successively again; And successively steam-out (SO) is imitated the thermal source of heater (1) as I, I is imitated I effect juice steam that flash chamber (2) produces is imitated heater (3) as II thermal source, II is imitated II effect juice steam that flash chamber (4) produces imitate the thermal source of heater (5), III is imitated III effect juice steam that heater (5) the produces thermal source as destilling tower as III; At last, imitate the concentrated poor liquid of outlet at bottom discharge of flash chamber (1) from I.
4. the method for concentration of a kind of alcohol distiller's solution according to claim 3, it is characterized in that, former poor liquid is divided into two-way by after vinasse pump (7) pressurization, one the tunnel to pump into destilling tower be that the concentration systems of the alcohol distiller's solution of topping still concentrates, and it is that the concentration systems of the alcohol distiller's solution of rectifying column concentrates that another road pumps into destilling tower.
5. the method for concentration of a kind of alcohol distiller's solution according to claim 3 is characterized in that, described steam-out (SO) temperature is that 140 ℃, pressure are 0.35Mpa; The temperature that I is imitated in the flash chamber (2) is 127 ℃, and pressure is 0.25Mpa; The temperature that II is imitated in the flash chamber (4) is 118 ℃, and pressure is 0.19Mpa; The temperature of destilling tower lower curtate is 108 ℃, and pressure is 0.14Mpa.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100222453A CN101543682B (en) | 2009-04-28 | 2009-04-28 | Concentrating system and concentrating method of alcohol waste liquid |
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| CN2009100222453A CN101543682B (en) | 2009-04-28 | 2009-04-28 | Concentrating system and concentrating method of alcohol waste liquid |
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| CN101543682A CN101543682A (en) | 2009-09-30 |
| CN101543682B true CN101543682B (en) | 2010-12-29 |
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| CN103394205B (en) * | 2013-08-13 | 2015-04-29 | 南宁市科潮酒精技术开发有限责任公司 | Molasses alcohol fermented mature mash multi-effect evaporation concentration integrated equipment and process |
| CN103589620B (en) * | 2013-11-11 | 2016-07-06 | 河南景源果业有限责任公司 | Triple effect steams wine technique |
| CN103614278B (en) * | 2013-11-20 | 2016-01-13 | 广西罗城科潮基业科技发展有限公司 | The Apparatus and method for of waste liquid of molasses alcohol |
| CN106178565B (en) * | 2016-08-30 | 2019-01-25 | 广西克鲁尼茶叶生物科技有限公司 | A kind of 2nd effect evaporator system suitable for the recycling concentration of tea polyphenols alcohol eluent |
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