CN101037239A - Method for reclaiming dry object from alcohol waste liquid - Google Patents
Method for reclaiming dry object from alcohol waste liquid Download PDFInfo
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- CN101037239A CN101037239A CN 200710014612 CN200710014612A CN101037239A CN 101037239 A CN101037239 A CN 101037239A CN 200710014612 CN200710014612 CN 200710014612 CN 200710014612 A CN200710014612 A CN 200710014612A CN 101037239 A CN101037239 A CN 101037239A
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Abstract
The present invention relates to a method of recovering drying matter from distillers grain waste liquid, wherein the distillers grain waste liquid is subjected to mechanical separation by a distillers grain separator or a plate-and-frame filter press so as to obtain filter residue and clear liquid, and the filter residue is fed into a drier system by a conveyer. The present invention is characterized in that: the clear liquid is fed into a vaporization system by a charge pump so as to obtain a thick paste with a concentration of 30~35 %, and then is fed into a rotary steam tube dryer by a underflow pump so as to be dried together with the filter residue, thereby, the drying matter is obtained, wherein the heat resource of the vaporization system comes from the secondary steam of the rotary steam tube dryer. In the present invention, the secondary steam of the rotary steam tube dryer can be used for the drying of clear liquid so as to reduce the production cost; the clear liquid is recovered so that the dryer matter of high protein fodder is obtained, and the discharged condensed water and non-condensable gas does not contain solid and pollutant, thereby the environmental protection requirements is satisfied, and the problem of contamination by effluent in pharmaceutical industry is solved.
Description
Technical field
The application belongs to liquid waste disposal recovery technology in the Alcohol Production industry.
Background technology
Alcohol industry mainly is to utilize grains such as corn, cassava to carry out fermented distilled production for raw material.Alcohol only utilized the starch part of raw material, and protein remains in the waste liquid in process of production.One ton of alcohol of every production can produce 10-15 ton vinasse waste liquid, and the wherein moisture 92-95% that is about contains rich nutrient contents such as protein, fat, carbohydrate, inorganic salt, microbial cells in the dry-matter of all the other 5-8%.PH value is 3.5-4.5, and volatile acid is about 0.8, and total acid is 6-8 °, COD value 30000-40000P.P.M.BOD
520000-30000P.P.M。If directly enter rivers, not only environmental pollution is quite serious, and has wasted a large amount of nutritive ingredients." 200420099463.X vapour pipe rotary shelf drier " and disclosed " application number: 200410075832.6 " a kind of distillers ' grains drying method that the applicant authorizes has solved the recycling problem of the poor slag in the waste liquid.But still contain rich nutrient contents such as high protein in the vinasse waste liquid in the isolated clear liquid, directly discharge still can pollute environment.If with subthermal energy dried recovered again, cost is too high, general business burden does not rise.And steam-tube rotatory dryer enters secondary steam in the atmosphere again at work in vain.
Summary of the invention
The application is for solving the thorough recycling problem of schlempe waste liquid, invents a kind of secondary steam that utilizes steam-tube rotatory dryer reclaims dry thing from the vinasse waste liquid method.
Processing method of the present invention is: it be with the vinasse waste liquid through vinasse separating machine or plate-and-frame filter press mechanical separation, obtain filter residue and clear liquid; Filter residue send dryer system through transfer roller, its feature also comprises: clear liquid is through charging pumping vapo(u)rization system, the thermal source of vapo(u)rization system is from the secondary steam of steam-tube rotatory dryer, obtain the underflow that concentration is 30-35% after the evaporation, send into steam-tube rotatory dryer through underflow pump again and mix common drying with filter residue, obtain dry thing.
Described vapo(u)rization system can be three boiling system, is called I effect, II effect, III effect, and each effect all is made up of falling-film evaporator, vapor-liquid separation tank and recycle pump;
Wherein the water of condensation that produces of clear liquid, secondary steam thermal source and system move towards as follows respectively:
(1) the clear liquid trend is for reverse-flow, and order is for III is imitated, II is imitated, I is imitated;
1. clear liquid enters in the III effect separating tank by the opening for feed of stillness of night pump by III effect separating tank, imitate the material outlet inflow III effect inlet of circulating pump of separating tank bottom then through III, imitate recycle pump by III clear liquid is sent to the opening for feed that III is imitated the falling-film evaporator top, material enters heating tube uniformly by the distribution apparatus on the upper tube sheet, flow downward with form of film, carry out violent evaporation simultaneously, the discharge port of material in the falling-film evaporator bottom enters III and imitates separating tank, and material and steam are separated at separating tank; Isolated material is sent by III effect recycle pump, and the one, continue to send III to imitate falling-film evaporator partial material and continue evaporation, the 2nd, leftover materials are imitated the discharging control valve through III deliver to II effect vapo(u)rization system, carry out the next stage evaporation; The mass flow that enters next stage is imitated the control of discharging control valve by III;
2. the material of imitating the evaporation of vapo(u)rization system from III is imitated the opening for feed that recycle pump is sent to II single-effect evaporator top through II, and Flow of Goods and Materials and evaporative process are imitated vapo(u)rization system with III; Imitate the material that evaporated through II and deliver to I effect vapo(u)rization system through II effect discharging control valve by II effect circulating-pump outlet;
3. the material of imitating the evaporation of vapo(u)rization system from II is imitated the opening for feed that recycle pump is sent to I single-effect evaporator top through I, and Flow of Goods and Materials and evaporative process are imitated vapo(u)rization system with III; After material is concentrated into the concentration 30%-35% of processing requirement at the I single-effect evaporator, imitates outlet of circulating pump by I and deliver to underflow pump, deliver to steam-tube rotatory dryer by underflow pump again;
(2) produce the secondary steam trend from drying machine and be downflow system, order is imitated for I effect-II effect-III;
The secondary steam that steam-tube rotatory dryer produces is attracted to I effect falling-film evaporator by induced draft fan and adds thermal material, and the secondary steam that adds the thermal material generation in I is imitated enters II effect falling-film evaporator and adds thermal material; The secondary steam that adds the thermal material generation in II is imitated enters III effect falling-film evaporator and adds thermal material; III imitate secondary steam that falling-film evaporator produces barometric condenser be condensed after recirculated cooling water directly contacts, noncondensable gas enters the noncondensable gas house steward by upper and lower two vent valves of falling-film evaporator cylindrical shell respectively, by the vacuum pump emptying;
(3) trend of water of condensation is that I effect-II effect-III is imitated;
I is imitated the water of condensation of falling-film evaporator generation from the discharge of tubulation bottom, enters II effect falling-film evaporator and carries out flash distillation, utilizes its heat; The water of condensation dependence pressure reduction that II effect falling-film evaporator produces enters III effect falling-film evaporator and carries out flash distillation, utilizes its heat; The water of condensation that III is imitated the falling-film evaporator generation drains into trench by the condensate pump extraction.
The application's positively effect is: 1, the main thermal source of vapo(u)rization system is the secondary waste gas that produces from the vapour pipe rotary shelf drier, has avoided direct emptying waste, has reduced production cost.2, the isolated clear liquid of vinasse waste liquid is recovered to the dry thing of high protein feed after evaporation, also makes the water of condensation of discharge and noncondensable gas not contain solids and pollution substance, reaches environmental requirement, and the waste water pollution problem of restriction enterprise development is thoroughly solved.
Description of drawings
Fig. 1 is the synoptic diagram of the application's three boiling system.
Among the figure: 1-III is imitated vapor-liquid separation tank, and 2-III is imitated falling-film evaporator, 3-vacuum pump, 4-II is imitated vapor-liquid separation tank, and 5-II is imitated falling-film evaporator, and 6-I is imitated falling-film evaporator, 7-I is imitated vapor-liquid separation tank, the 8-underflow pump, and 9-I is imitated recycle pump, 10-II is imitated the discharging control valve, 11-II is imitated recycle pump, and 12-III is imitated the discharging control valve, and 13-III is imitated recycle pump, the 14-condensate pump, the 15-clear liquid pump.
Embodiment
Implement when of the present invention processing step as described in the summary of the invention, its key is that the evaporation concentration of clear liquid is realized by three boiling system.Now the composition of three boiling system is described again according to Fig. 1.
As shown in Figure 1, vapor-liquid separation tank 1 becomes III to imitate vapo(u)rization system with falling-film evaporator 2, recycle pump 13 usefulness pipe connection, vapor-liquid separation tank 4 and falling-film evaporator 5, recycle pump 11 usefulness pipe connection constitute II and imitate vapo(u)rization system, and vapor-liquid separation tank 7 becomes I to imitate vapo(u)rization system with falling-film evaporator 6, recycle pump 9 usefulness pipe connection.
III is imitated and II is imitated the mass transport of vapo(u)rization system by III effect discharging control valve 12 and pipeline connection; II is imitated and the mass transport of I vapo(u)rization system is imitated discharging control valve 10 and pipeline connection by II.III is imitated the noncondensable gas of falling-film evaporator generation by vacuum pump 3 emptyings.The underflow that I is imitated after the evaporation is delivered to steam-tube rotatory dryer by underflow pump 8, mixes with the useless schlempe of vinasse and carries out drying.The isolated clear liquid of vinasse send III to imitate vapor-liquid separation tank 1 by clear liquid pump 15, enters three boiling system.
I is imitated the water of condensation of falling-film evaporator 6 generations from the discharge of tubulation bottom, enters II effect falling-film evaporator 5 and carries out flash distillation, utilizes its heat.Equally, II is imitated water of condensation that falling-film evaporator 5 produces and is relied on pressure reduction to enter III to imitate falling-film evaporator 2 and carry out flash distillation and utilize its heat.The water of condensation that III is imitated falling-film evaporator 2 generations drains into trench by condensate pump 14 extractions.
III is imitated the noncondensable gas that produces in the falling-film evaporator 2, enters the noncondensable gas house steward by two vent valves about the evaporator tube respectively, is connected to vacuum pump 3 emptyings then.
Claims (2)
1, a kind of method that from the vinasse waste liquid, reclaims dry thing, it be with the vinasse waste liquid through vinasse separating machine or plate-and-frame filter press mechanical separation, obtain filter residue and clear liquid; Filter residue send dryer system through transfer roller, its feature also comprises: clear liquid is through charging pumping vapo(u)rization system, the thermal source of vapo(u)rization system is from the secondary steam of steam-tube rotatory dryer, obtain the underflow that concentration is 30-35% after the evaporation, send into steam-tube rotatory dryer through underflow pump again and mix common drying with filter residue, obtain dry thing.
2, the method that reclaims dry thing from the vinasse waste liquid as claimed in claim 1 is characterized in that described vapo(u)rization system is a three boiling system, is called I effect, II effect, III effect, and each effect all is made up of falling-film evaporator, vapor-liquid separation tank and recycle pump;
Wherein the water of condensation that produces of clear liquid, secondary steam thermal source and system move towards as follows respectively:
(1) the clear liquid trend is for reverse-flow, and order is for III is imitated, II is imitated, I is imitated;
1. clear liquid enters in the III effect separating tank by the opening for feed of stillness of night pump by III effect separating tank, imitate the material outlet inflow III effect inlet of circulating pump of separating tank bottom then through III, imitate recycle pump by III clear liquid is sent to the opening for feed that III is imitated the falling-film evaporator top, material enters heating tube uniformly by the distribution apparatus on the upper tube sheet, flow downward with form of film, carry out violent evaporation simultaneously, the discharge port of material in the falling-film evaporator bottom enters III and imitates separating tank, and material and steam are separated at separating tank; Isolated material is sent by III effect recycle pump, and the one, continue to send III to imitate falling-film evaporator partial material and continue evaporation, the 2nd, leftover materials are imitated the discharging control valve through III deliver to II effect vapo(u)rization system, carry out the next stage evaporation; The mass flow that enters next stage is imitated the control of discharging control valve by III;
2. the material of imitating the evaporation of vapo(u)rization system from III is imitated the opening for feed that recycle pump is sent to II single-effect evaporator top through II, and Flow of Goods and Materials and evaporative process are imitated vapo(u)rization system with III; Imitate the material that evaporated through II and deliver to I effect vapo(u)rization system through II effect discharging control valve by II effect circulating-pump outlet;
3. the material of imitating the evaporation of vapo(u)rization system from II is imitated the opening for feed that recycle pump is sent to I single-effect evaporator top through I, and Flow of Goods and Materials and evaporative process are imitated vapo(u)rization system with III; After material is concentrated into the concentration 30%-35% of processing requirement at the I single-effect evaporator, imitates outlet of circulating pump by I and deliver to underflow pump, deliver to steam-tube rotatory dryer by underflow pump again;
(2) produce the secondary steam trend from drying machine and be downflow system, order is imitated for I effect-II effect-III;
The secondary steam that steam-tube rotatory dryer produces is attracted to I effect falling-film evaporator by induced draft fan and adds thermal material, and the secondary steam that adds the thermal material generation in I is imitated enters II effect falling-film evaporator and adds thermal material; The secondary steam that adds the thermal material generation in II is imitated enters III effect falling-film evaporator and adds thermal material; III imitate secondary steam that falling-film evaporator produces barometric condenser be condensed after recirculated cooling water directly contacts, noncondensable gas enters the noncondensable gas house steward by upper and lower two vent valves of falling-film evaporator cylindrical shell respectively, by the vacuum pump emptying;
(3) trend of water of condensation is that I effect-II effect-III is imitated;
I is imitated the water of condensation of falling-film evaporator generation from the discharge of tubulation bottom, enters II effect falling-film evaporator and carries out flash distillation, utilizes its heat; The water of condensation dependence pressure reduction that II effect falling-film evaporator produces enters III effect falling-film evaporator and carries out flash distillation, utilizes its heat; The water of condensation that III is imitated the falling-film evaporator generation drains into trench by the condensate pump extraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710014612 CN101037239A (en) | 2007-04-26 | 2007-04-26 | Method for reclaiming dry object from alcohol waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710014612 CN101037239A (en) | 2007-04-26 | 2007-04-26 | Method for reclaiming dry object from alcohol waste liquid |
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| CN101037239A true CN101037239A (en) | 2007-09-19 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082960A1 (en) * | 2007-12-27 | 2009-07-09 | Cofco Limited | A method for recovering solid residue from waste liquor resulted from ethanol production through cassava fermentation |
| CN102160609A (en) * | 2011-04-02 | 2011-08-24 | 河南科技大学 | Swine fermentation complete feed and production method thereof |
| CN103566605A (en) * | 2013-11-20 | 2014-02-12 | 广西罗城科潮基业科技发展有限公司 | Treatment equipment and treatment method of molasses alcohol waste liquid |
| CN103922334A (en) * | 2014-04-08 | 2014-07-16 | 吴植仁 | Method and device for preparing active carbon by white spirit grains |
| CN108178213A (en) * | 2017-12-30 | 2018-06-19 | 西安九环科技有限公司 | Calcium chloride wastewater is concentrated and dried thermal energy coupling device |
| CN113730935A (en) * | 2021-09-23 | 2021-12-03 | 成都鸿展慧智科技有限公司 | Alcohol evaporation juice steam waste heat recycling process |
-
2007
- 2007-04-26 CN CN 200710014612 patent/CN101037239A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082960A1 (en) * | 2007-12-27 | 2009-07-09 | Cofco Limited | A method for recovering solid residue from waste liquor resulted from ethanol production through cassava fermentation |
| CN102160609A (en) * | 2011-04-02 | 2011-08-24 | 河南科技大学 | Swine fermentation complete feed and production method thereof |
| CN102160609B (en) * | 2011-04-02 | 2013-03-13 | 河南科技大学 | Swine fermentation complete feed and production method thereof |
| CN103566605A (en) * | 2013-11-20 | 2014-02-12 | 广西罗城科潮基业科技发展有限公司 | Treatment equipment and treatment method of molasses alcohol waste liquid |
| CN103922334A (en) * | 2014-04-08 | 2014-07-16 | 吴植仁 | Method and device for preparing active carbon by white spirit grains |
| CN103922334B (en) * | 2014-04-08 | 2015-09-30 | 吴植仁 | Distillers ' grains prepares method and the device of gac |
| CN108178213A (en) * | 2017-12-30 | 2018-06-19 | 西安九环科技有限公司 | Calcium chloride wastewater is concentrated and dried thermal energy coupling device |
| CN113730935A (en) * | 2021-09-23 | 2021-12-03 | 成都鸿展慧智科技有限公司 | Alcohol evaporation juice steam waste heat recycling process |
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