CN103039703B - Continuous countercurrent leaching and degreasing method for fish meal - Google Patents
Continuous countercurrent leaching and degreasing method for fish meal Download PDFInfo
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- CN103039703B CN103039703B CN201310021853.9A CN201310021853A CN103039703B CN 103039703 B CN103039703 B CN 103039703B CN 201310021853 A CN201310021853 A CN 201310021853A CN 103039703 B CN103039703 B CN 103039703B
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Abstract
The invention discloses a continuous countercurrent leaching and degreasing method for fish meal. The continuous countercurrent leaching and degreasing method comprises the following steps of: adding the material fish meal with 10%-20% of oil content, which is not extruded and expanded or granulated, into a soaking barrel body of a continuous extractor; moving the material fish meal from top to bottom under the action of gravity; pressing organic solvent, namely normal hexane into the soaking barrel body by a chain bucket leaching-extracting mechanism; carrying out countercurrent leaching for a period of time (40 minutes to 70 minutes) under the action of a vertical packing auger in the barrel body under the conditions of a set charging rate, a set material-liquid ratio (1:(0.6-1.2, w/v)) and a set leaching temperature (40 DEG C to 60 DEG C), so that the materials are dissolved and completely contacted so as to ensure that the normal hexane can effectively dissolve the grease in the fish meal can be ensured to obtain an oil mixture of the grease and the normal hexane; evaporating and stripping the oil mixture, recycling a solvent to obtain crude fish oil; desolventizing the obtained wet fish meal by a horizontal special extruder, and then evaporating and drying the obtained wet fish meal, and recycling the solvent to obtain low-fat high-protein fish meal with residual oil content smaller than 3.3%, wherein the protein content is increased to 68%-75%, and the content of volatile basic nitrogen is reduced by 30%-50% relative to that of the material fish meal.
Description
Technical field
The present invention relates to a kind of fish meal degreasing method, especially refer to that a kind of fish meal leaches the method for degreasing continuously.
Background technology
Fish meal has very high protein content and nutritive value, and as animal protein, its leading position not yet can be replaced by other protein feed.Jin10Nian Lai China every year on average imported fish meal approaches 1,200,000 tons, yet along with fish meal big export country fish meal big bulge in prices such as Peru, Chile, needs badly and greatly develop the restriction that domestic fish meal produces to break through imported fish meal.
The fat content of fish meal is conventionally between 10%～15%, easily oxidation deterioration occurs and reduce rapidly nutritive value and the storage stability of product, therefore, fat content is too high is the low main cause of domestic fish meal quality, if carry out ungrease treatment, just can increase substantially fish meal quality.The degreasing of oil plant at present is mainly divided into pot group type (intermittently) leaching and continous way leaches two kinds of techniques.Pot group type extract technology continuity is not strong, and operational ton is heavy and have potential safety hazard, and cost is higher; And adopt flat turn, the Continuous leaching process of the conventional infuser such as ring-like, crawler type is also difficult to effectively leach the grease in fish meal; main cause is that the fines content of fish meal is higher; can not fully contact with solvent; in skimming processes, easily produce " bridge formation " phenomenon, the equipment frequent jams of causing is even shut down stopping production.2007, Shen Jinhua, Cheng Yuanyang disclose a kind of < < equipment for continuous extraction of fish protein > > (patent No. ZL200710019209.2), this device comprises the compositions such as a workbench, dipping cylindrical shell, a tripper and a rabbling mechanism, the continuous extraction of fish protein be can realize, but fish meal continuous degreasing method and concrete technology do not disclosed.For this reason, the present invention adopts this equipment for continuous extraction of fish protein as continuous infuser (hereinafter referred to as " infuser continuously "), make n-hexane and do not carry out expanded and fish meal counterflow mixture extraction granulation, efficiently removing grease, to adapt to the continuous need of production of industrialization.
Summary of the invention
The invention provides the method for a kind of fish meal continuous reverse flow leaching degreasing.Fish meal continuous reverse flow leaching method for producing oil of the present invention comprises the steps: that (1) do not drop in the dipping cylindrical shell of continuous infuser carrying out the raw material fish meal that extrusion or granulation process, by gravity, moved from top to bottom, by chuck bucket diffusion mechanism, organic solvent is pressed in dipping cylindrical shell from bottom to top, setting under inlet amount, solid-liquid ratio, extraction temperature condition, counterflow leaching through certain hour makes material be dissolved full contact, guarantee that organic solvent can effectively dissolve the grease in fish meal, obtain the miscella of grease and organic solvent; (2) gained miscella, through evaporation stripping, reclaims solvent, makes a mao fish oil; (3) the wet fish meal dregs of rice of gained steam de-being dried after horizontal spiral extruder precipitation, and reclaim solvent, make low fat high protein fish meal.
Wherein: the raw material fish meal described in the present invention refers to the fish meal that does not carry out extrusion or granulation processing, and raw material fish meal fat content is 10%～20%; Described organic solvent refers to n-hexane, and n-hexane is called again industrial hexane, No. six solvents in different occasions; Described counterflow leaching refers to raw material fish meal is dropped in the dipping cylindrical shell of continuous infuser, by gravity, moved from top to bottom, by chuck bucket diffusion mechanism, n-hexane is pressed in dipping cylindrical shell from bottom to top, setting under inlet amount, solid-liquid ratio, extraction temperature condition, counterflow leaching through certain hour makes material be dissolved full contact, guarantee that n-hexane can effectively dissolve the grease in fish meal, obtain the miscella of grease and n-hexane; Described solid-liquid ratio refers to that the input amount ratio of fish meal and n-hexane is 1: 0.6～1.2 (w/v), and extraction temperature is 40～60 ℃, and extraction time is 40～70min.
Main feature of the present invention, under the prerequisite of not carrying out extrusion and granulation, directly with n-hexane, to carry out continuous reverse flow leaching to raw material fish meal, 90%～95% grease in disposable extraction fish meal, the resid amount of gained low fat high protein fish meal is less than 3.3%, protein content rises to 68%～75%, the histamine of product, the poisonous and harmful factor contents such as VBN significantly reduce, wherein TVB-N content reduces 30%～50% than raw material fish meal, local flavor and color and luster be improved significantly, storage stability and nutritive value significantly improve, the present invention has overcome the defect that easily produces " bridge formation " in the not high and leaching process of traditional method for producing oil efficiency.The method is applicable to industrialization continuity produces, and saves solvent.
The specific embodiment
Embodiment 1
In the dipping cylindrical shell that the raw material fish meal that is 16.4% by fat content drops into continuous infuser by horizontal feeder, by gravity, moved from top to bottom, by chuck bucket diffusion mechanism, n-hexane is pressed in dipping cylindrical shell from bottom to top, inlet amount is 6.2t/h, solid-liquid ratio 1: 0.7 (w/v), extraction temperature is 50 ℃, in cylindrical shell, under the effect of vertical auger, the counterflow leaching through 45min makes material be dissolved full contact, guarantee that n-hexane can effectively dissolve the grease in fish meal, obtain the miscella of grease and n-hexane, gained miscella, through evaporation stripping, reclaims solvent, makes a mao fish oil; The wet fish meal dregs of rice of gained steam de-dry after horizontal spiral extruder precipitation, and reclaim solvent, obtain resid amount and be 2.8% low fat high protein fish meal, its protein content rises to 69.2% by 65.7% of raw material fish meal, and TVB-N content reduces 41.4% than raw material fish meal.
Embodiment 2
In the dipping cylindrical shell that the raw material fish meal that is 13.5% by fat content drops into continuous infuser by horizontal feeder, by gravity, moved from top to bottom, by chuck bucket diffusion mechanism, n-hexane is pressed in dipping cylindrical shell from bottom to top, inlet amount is 6.2t/h, solid-liquid ratio 1: 0.85 (w/v), extraction temperature is 50 ℃, in cylindrical shell, under the effect of vertical auger, the counterflow leaching through 55min makes material be dissolved full contact, guarantee that n-hexane can effectively dissolve the grease in fish meal, obtain the miscella of grease and n-hexane, gained miscella, through evaporation stripping, reclaims solvent, makes a mao fish oil; The wet fish meal dregs of rice of gained steam de-dry after horizontal spiral extruder precipitation, and reclaim solvent, obtain resid amount and be 2.2% low fat high protein fish meal, its protein content rises to 71.6% by 66.2% of raw material fish meal, and TVB-N content reduces 40.3% than raw material fish meal.
Raw material fish meal described in the present invention refers to and does not carry out fish meal expanded or that granulation is processed.
Although the present invention with preferred embodiment openly as above; but it is not in order to limit the present invention, any person skilled in the art, without departing from the spirit and scope of the present invention; all can do various changes and modification, so protection scope of the present invention should be with being as the criterion that claims were defined.
Claims (1)
1. a fish meal continuous reverse flow leaching method for producing oil, it is characterized in that, mainly comprise the steps: raw material fish meal to drop in the dipping cylindrical shell of continuous infuser, by gravity, moved from top to bottom, by chuck bucket diffusion mechanism, organic solvent is pressed in dipping cylindrical shell from bottom to top, the inlet amount of setting, solid-liquid ratio, under extraction temperature condition, in cylindrical shell, under the effect of vertical auger, the counterflow leaching through certain hour makes material be dissolved full contact, guarantee that organic solvent can effectively dissolve the grease in fish meal, obtain the miscella of grease and organic solvent, gained miscella is through evaporation stripping, reclaim solvent, make a mao fish oil, the wet fish meal dregs of rice of gained steam de-dry after horizontal spiral extruder precipitation, and reclaim solvent, make low fat high protein fish meal,
Described raw material fish meal refers to the fish meal that does not carry out extrusion or granulation processing, and raw material fish meal fat content is 10%～20%;
Described organic solvent is n-hexane;
The solid-liquid ratio of described raw material fish meal and n-hexane is 1: 0.6～1.2 (w/v), 40～60 ℃ of extraction temperatures, extraction time 30～70min;
The resid amount of described low fat high protein fish meal is less than 3.3%, and protein content rises to 68%～75%, and TVB-N content reduces 30%～50% than raw material fish meal.
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| CN201310021853.9A CN103039703B (en) | 2013-01-22 | 2013-01-22 | Continuous countercurrent leaching and degreasing method for fish meal |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201938319U (en) * | 2010-12-16 | 2011-08-24 | 刘树营 | Halobios fat and protein separator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382233Y (en) * | 1999-06-07 | 2000-06-14 | 都兴德 | Defatting and press device for fish |
| KR20060118220A (en) * | 2005-05-16 | 2006-11-23 | 주식회사 유맥스 | Method for production of fat removal powder from raw materials of edible oil and fat removal powder thereof |
| CN2899785Y (en) * | 2005-11-23 | 2007-05-16 | 黑龙江省计算中心 | Double screw continuous reverse flow supersonic extractor |
| CN201004984Y (en) * | 2007-01-01 | 2008-01-16 | 常熟市华鑫机械制造有限公司 | Fish protein continuous extracting device |
| CN102524519A (en) * | 2010-12-16 | 2012-07-04 | 刘树营 | Novel fish meal processing method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201938319U (en) * | 2010-12-16 | 2011-08-24 | 刘树营 | Halobios fat and protein separator |
Non-Patent Citations (2)
| Title |
|---|
| 卫星式浸出器的研制;胡健华等;《中国油脂》;19941231;第19卷(第6期);27-30 * |
| 胡健华等.卫星式浸出器的研制.《中国油脂》.1994,第19卷(第6期),27-30. * |
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Address after: Food College of Jiangnan University No. 1800 214122 Jiangsu city of Wuxi Province Li Lake Avenue Applicant after: Jiangnan University Applicant after: ZHONGHAI OCEAN (WUXI) MARINE ENGINEERING EQUIPMENT CO.,LTD. Address before: Food College of Jiangnan University No. 1800 214122 Jiangsu city of Wuxi Province Li Lake Avenue Applicant before: Jiangnan University Applicant before: WUXI HUAHENG MARINE ORGANISM ENGINEERING Co.,Ltd. |
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Effective date of registration: 20230209 Address after: 214000 1800 Lihu Avenue, Binhu District, Wuxi, Jiangsu Patentee after: Jiangnan University Patentee after: Zhonghai marine Polytron Technologies Inc. Address before: Food College of Jiangnan University No. 1800 214122 Jiangsu city of Wuxi Province Li Lake Avenue Patentee before: Jiangnan University Patentee before: ZHONGHAI OCEAN (WUXI) MARINE ENGINEERING EQUIPMENT CO.,LTD. |
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