CN110041995A - A kind of animal sources aminoacids solution grease separating treatment technique - Google Patents
A kind of animal sources aminoacids solution grease separating treatment technique Download PDFInfo
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- CN110041995A CN110041995A CN201910225431.0A CN201910225431A CN110041995A CN 110041995 A CN110041995 A CN 110041995A CN 201910225431 A CN201910225431 A CN 201910225431A CN 110041995 A CN110041995 A CN 110041995A
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- grease
- aminoacids solution
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/12—Production of fats or fatty oils from raw materials by melting out
- C11B1/16—Production of fats or fatty oils from raw materials by melting out with steam
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/10—Refining fats or fatty oils by adsorption
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/16—Refining fats or fatty oils by mechanical means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Fertilizers (AREA)
- Fats And Perfumes (AREA)
Abstract
The present invention relates to a kind of animal sources aminoacids solution grease separating treatment techniques.Including aminoacids solution pretreatment, grease separating technology and grease deacidification valence technique.Technique of the invention has the advantages such as aminoacids solution water-oil separating is high-efficient, easy to operate, low energy consumption, non-wastewater discharge, acid value of lipids are low.
Description
Technical field
The present invention relates to dead livestock and poultry harmless treatment fields, and in particular at a kind of animal sources aminoacids solution grease separation
Science and engineering skill.
Background technique
With the rise of dead livestock and poultry harmless treatment industry, livestock and poultry harmless treatment acid hydrolyzation new process is included in innoxious
Processing technique specification, thus product postprocessing problem urgent need to resolve derived from new process.Conventional fat acid value processing scheme is to add
The alkaline matters such as potassium hydroxide, sodium hydroxide, ammonium hydroxide are added to carry out acid-base neutralization, still, the by-product that this treatment process generates is easy
In generating emulsification or saponification problems, the separation of grease and by-product is influenced；High temperature depickling treatment process has processing, and energy consumption is high, place
Manage the defects of at high cost.Therefore, the different fields such as chemical industry, agricultural and separation expert is to the method how efficiently to reduce acid value of lipids
It is studied.The defects of being not thorough due to common grease deacidification valence technology there are processing cost height and product separation.Therefore, grease
It needs to improve in terms of high efficiency, inexpensive deacidification valence.
Summary of the invention
The purpose of the present invention is to provide a kind of animal sources aminoacids solution grease separating treatment technique, which has amino
The advantages such as acid solution water-oil separating is high-efficient, easy to operate, low energy consumption, non-wastewater discharge, acid value of lipids are low.
Another object of the present invention is to provide above-mentioned animal sources aminoacids solution grease separating treatment techniques.
To achieve the goals above, technical scheme is as follows:
A kind of animal sources aminoacids solution grease separating treatment technique, including aminoacids solution pretreatment, grease separating technology and
Grease deacidification valence technique, in which:
(1) aminoacids solution pre-processes:
Dead livestock and poultry, the concentrated sulfuric acid and water that mass parts ratio is 25:0.1~6:2~10 are added in reaction kettle, stirred
Speed is 1~40r/min, and 1~8h of hybrid reaction under the conditions of 95~150 DEG C of whipping temp, 0.01~0.3MPa stops stirring,
Reactor pressure is controlled in 0.01~0.5MPa, 0.2~5h of pressure maintaining, aminoacids solution is obtained；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 20~120r/min, and mixing time is 3~15min, and settle and separate, water layer is pumped to rich water holding vessel；It repeats
Above-mentioned steam washing operation 1~5 time, centrifugation, obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 65~130 DEG C, 0.01
~0.5MPa handles 3~50min, and product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process,
Obtain finished product grease.
Above-mentioned animal sources aminoacids solution grease separating treatment technique, includes the following steps:
(1), dead livestock and poultry, the concentrated sulfuric acid and water that mass parts ratio is 25:0.1~6:2~10 are added in reaction kettle,
Mixing speed is 1~40r/min, and 1~8h of hybrid reaction under the conditions of 95~150 DEG C of whipping temp, 0.01~0.3MPa stops stirring
It mixes, reactor pressure is controlled in 0.01~0.5MPa, 0.2~5h of pressure maintaining, aminoacids solution is obtained；The purpose of the pressure maintaining is
To improve aminoacids solution water-oil separating efficiency；
(2), material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and heat is led into temporary storage tank and is steamed
Vapour, mixing speed are 20~120r/min, and mixing time is 3~15min, and settle and separate, water layer is pumped to rich water holding vessel；Weight
Multiple above-mentioned steam washing operation 1~5 time, centrifugation obtains preliminary purification grease；The purpose of the steaming is to improve oil
Sulfuric acid content in rouge；
(3), grease is pumped in the reactor tank equipped with metal filter screen in step (2), treatment temperature be 65~130 DEG C,
0.01~0.5MPa handles 3~50min, and product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin
Processing, obtains finished product grease；The mesh of the metal filter screen and D201 macroporous strong basic styrene series anion exchange resin
Be to further decrease acid value of lipids.
The beneficial effects of the present invention are:
(1), grease is in mixing and adsorbed state in aminoacids solution, it is difficult to be separated by common process；Using adding
The grease desorption that adsorbed state is in aminoacids solution effectively can be attached to aminoacids solution upper layer by the warm attached technique of pressing and desorption, real
Existing water-oil separating；Present treatment technique does not need additionally to increase oily water separating equipment in aminoacids solution, greatly reduces equipment investment
And operation cost；
(2), due in aminoacids solution preparation process using sulfuric acid as catalyst, in grease contain a small amount of sulfuric acid；Sulphur
Acid release easily from hot grease aqueous solution repeatedly washs sulfur-bearing acid lipid by hot steam into hot water, can be obviously by grease
Middle major part sulfuric acid removal ensures that acid value is greatly lowered in grease；
(3), metal filter screen material is one of magnesium, zinc, aluminium and iron active metal, under the conditions of being heated and pressurizeed,
Organic in metal filter screen and grease and inorganic acid reaction can further be promoted, acid value in grease can be further decreased, and raw
At product be easy to separate from grease, avoid generating and be saponified or emulsion, and processing cost lower than conventional sodium hydroxide,
For ammonium hydroxide etc. by the treatment process of acid value of lipids, by-product is distributed directly to downstream producer as raw material for lubricating grease；D201 macropore is strong
Basicity styrene series anion exchange resin can further decrease acid value of lipids.
Specific embodiment
A specific embodiment of the invention is described below with reference to embodiment, to better understand the present invention.This
It is a little that examples are only for illustrating the present invention and not for limiting the scope of the present invention.Actual conditions are not specified in lower example embodiment
Experimental method, usually according to this field normal condition or the condition suggested according to manufacturer；Used raw material, reagent etc.,
It unless otherwise specified, is the raw materials and reagents that can be obtained from commercial sources such as conventional markets.Those skilled in the art is at this
The variation and replacement of any unsubstantiality done on the basis of invention belong to scope of the present invention.
Embodiment 1
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 0.45 part of concentrated sulfuric acid and 8.2 parts of water to be added in reaction kettle, mixing speed 12r/
Hybrid reaction 5h under the conditions of min, 132 DEG C of whipping temp, 0.12MPa stops stirring, and reactor pressure is controlled in 0.03MPa
Pressure maintaining 2h, obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 80r/min, mixing time 5min, settle and separate, and water layer is pumped to rich water holding vessel；Above-mentioned steam is repeated to wash
Operation 3 times is washed, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 115 DEG C, at 0.06MPa
12min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 2
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 0.1 part of concentrated sulfuric acid and 2 parts of water to be added in reaction kettle, mixing speed 1r/min is stirred
Hybrid reaction 8h under the conditions of 95 DEG C of temperature, 0.01MPa is mixed, stirring is stopped, by reactor pressure control in 0.01MPa pressure maintaining 5h,
Obtain aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 20r/min, mixing time 3min, settle and separate, and water layer is pumped to rich water holding vessel；Above-mentioned steam is repeated to wash
Operation 1 time is washed, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 65 DEG C, 0.5MPa is handled
3min, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 3
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 6 parts of concentrated sulfuric acids and 10 parts of water to be added in reaction kettle, mixing speed 40r/min is stirred
Hybrid reaction 1h under the conditions of 150 DEG C of temperature, 0.01MPa is mixed, stirring is stopped, reactor pressure is controlled in 0.5MPa pressure maintaining
0.2h obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 120r/min, mixing time 15min, settle and separate, and water layer is pumped to rich water holding vessel；Repeat above-mentioned steam
Washing operation 5 times, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 130 DEG C, at 0.5MPa
3min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 4
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 0.4 part of concentrated sulfuric acid and 3 parts of water to be added in reaction kettle, mixing speed 4r/min is stirred
Hybrid reaction 1.6h under the conditions of 98 DEG C of temperature, 0.05MPa is mixed, stirring is stopped, reactor pressure is controlled in 0.03MPa pressure maintaining
0.5h obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 26r/min, mixing time 5min, settle and separate, and water layer is pumped to rich water holding vessel；Above-mentioned steam is repeated to wash
Operation 2 times is washed, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 69 DEG C, at 0.03MPa
8min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 5
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 1.7 parts of concentrated sulfuric acids and 6.3 parts of water to be added in reaction kettle, mixing speed 14r/
Hybrid reaction 3.2h under the conditions of min, 108 DEG C of whipping temp, 0.16MPa stops stirring, and reactor pressure control is existed
0.11MPa pressure maintaining 1.6h, obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 37r/min, mixing time 7.3min, settle and separate, and water layer is pumped to rich water holding vessel；Repeat above-mentioned steam
Washing operation 3 times, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 77 DEG C, at 0.12MPa
18min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 6
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 3 parts of concentrated sulfuric acids and 6 parts of water to be added in reaction kettle, mixing speed 13r/min is stirred
Hybrid reaction 2.5h under the conditions of 109 DEG C of temperature, 0.15MPa is mixed, stirring is stopped, reactor pressure is controlled in 0.22MPa pressure maintaining
1.6h obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 50r/min, mixing time 10min, settle and separate, and water layer is pumped to rich water holding vessel；Repeat above-mentioned steam
Washing operation 4 times, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 80 DEG C, 0.2MPa is handled
20min, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 7
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 5.2 parts of concentrated sulfuric acids and 9.1 parts of water to be added in reaction kettle, mixing speed 33r/
Hybrid reaction 7h under the conditions of min, 143 DEG C of whipping temp, 0.27MPa stops stirring, and reactor pressure is controlled in 0.46MPa
Pressure maintaining 4.6h, obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 113r/min, mixing time 14min, settle and separate, and water layer is pumped to rich water holding vessel；Repeat above-mentioned steam
Washing operation 3 times, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 125 DEG C, at 0.41MPa
41min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Embodiment 8
A kind of animal sources aminoacids solution grease separating treatment technique, treatment process the following steps are included:
(1) aminoacids solution pre-processes:
It weighs 25 parts of dead livestock and poultries, 4.6 parts of concentrated sulfuric acids and 7.8 parts of water to be added in reaction kettle, mixing speed 37r/
Hybrid reaction 6.5h under the conditions of min, 146 DEG C of whipping temp, 0.26MPa stops stirring, and reactor pressure is controlled in 0.4MPa
Pressure maintaining 3.5h, obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam is led into temporary storage tank,
Mixing speed is 100r/min, mixing time 13.2min, settle and separate, and water layer is pumped to rich water holding vessel；Repeat above-mentioned steaming
Vapour washing operation 3 times, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), and treatment temperature is 121 DEG C, at 0.44MPa
32min is managed, product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains finished product grease.
Reference examples 1
It in this reference examples, is handled without pressure maintaining, other components and treatment process are same as Example 1.
Reference examples 2
It in this reference examples, is handled without steaming, other components and treatment process are same as Example 1.
Reference examples 3
It in this reference examples, is handled without metal filter screen, other components and treatment process are same as Example 1.
Reference examples 4
In this reference examples, D201 macroporous strong basic styrene series anion exchange resin, other components and processing are not added
Technique is same as Example 1.
To the fatty acid of animal sources aminoacids solution grease separating treatment technique made from Examples 1 to 8 and reference examples 1~4
Valence is characterized, and acid value of lipids is tested according to GB 5009.229-2016, and test result sees below Tables 1 and 2.
Animal sources aminoacids solution grease separating treatment technique acid value of lipids made from 1 Examples 1 to 8 of table
Animal sources aminoacids solution grease separating treatment technique acid value of lipids made from 2 embodiment 1 of table and reference examples 1~4
By upper Tables 1 and 2 it is found that the animal sources aminoacids solution grease separating treatment work that various embodiments of the present invention are prepared
The acid value of lipids of skill is lower, this shows the animal sources aminoacids solution grease separating treatment being prepared with raw material provided by the invention
Technique has lower acid value of lipids；In contrast, the animal sources aminoacids solution grease that the raw material of each reference examples is prepared point
It is higher from the acid value of lipids for the treatment of process.In addition, the animal sources aminoacids solution grease separation that various embodiments of the present invention are prepared
Treatment process has lower acid value of lipids.
The above is the preferred embodiment of the invention, it is noted that for those skilled in the art
For, under the premise of not departing from the inventive principle, several improvements and modifications can also be made, these improvements and modifications are also considered as
The protection scope of the invention.
Claims (6)
1. a kind of animal sources aminoacids solution grease separating treatment technique, which is characterized in that including aminoacids solution pretreatment, grease point
Separating process and grease deacidification valence technique, in which:
(1) aminoacids solution pre-processes:
Dead livestock and poultry, the concentrated sulfuric acid and water that mass parts ratio is 25:0.1~6:2~10 are added in reaction kettle, mixing speed
For 1~40r/min, 1~8h of hybrid reaction under the conditions of 95~150 DEG C of whipping temp, 0.01~0.3MPa stops stirring, will be anti-
It answers the control of kettle pressure in 0.01~0.5MPa, 0.2~5h of pressure maintaining, obtains aminoacids solution；
(2) grease separating technology:
Material and grease discharge through discharge port in step (1), and grease is pumped to temporary storage tank, and hot steam, stirring are led into temporary storage tank
Speed is 20~120r/min, and mixing time is 3~15min, and settle and separate, water layer is pumped to rich water holding vessel；It repeats above-mentioned
Steam washing operation 1~5 time, centrifugation obtains preliminary purification grease；
(3) grease deacidification valence technique:
Grease is pumped in the reactor tank equipped with metal filter screen in step (2), treatment temperature be 65~130 DEG C, 0.01~
0.5MPa handles 3~50min, and product is centrifuged, D201 macroporous strong basic styrene series anion exchange resin process, obtains
To finished product grease.
2. animal sources aminoacids solution grease separating treatment technique according to claim 1, which is characterized in that the poultry that dies of illness
Fowl is pig, ox, sheep, chicken, duck, goose, rabbit, dog, cat and its leftover bits and pieces.
3. animal sources aminoacids solution grease separating treatment technique according to claim 1, which is characterized in that the poultry that dies of illness
The order of addition of fowl, the concentrated sulfuric acid and water is first to add water, secondly adds the concentrated sulfuric acid, finally adds dead livestock and poultry, wherein water source
For the rich water mentioned in step (2).
4. animal sources aminoacids solution grease separating treatment technique according to claim 1, which is characterized in that the amino acid
Liquid and grease separation are closed by electrical conductivity of solution Catastrophe control valve, achieve the purpose that grease separates in aminoacids solution.
5. animal sources aminoacids solution grease separating treatment technique according to claim 1, which is characterized in that the metal mistake
Strainer material is one kind of magnesium, zinc, aluminium and iron, and metal filter screen mesh number is 10~100 mesh.
6. animal sources aminoacids solution grease separating treatment technique according to claim 1, which is characterized in that the technique tool
Have that aminoacids solution water-oil separating is high-efficient, easy to operate, low energy consumption, non-wastewater discharge, the low advantage of acid value of lipids.
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| CN114671712A (en) * | 2020-12-25 | 2022-06-28 | 江苏北斗星环保股份有限公司 | Process for producing amino acid solution for livestock and poultry died of diseases |
| CN114686295A (en) * | 2020-12-31 | 2022-07-01 | 涟水北斗畜禽无害化处理有限公司 | Separation and purification process for amino acid liquor of animals died of diseases |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671712A (en) * | 2020-12-25 | 2022-06-28 | 江苏北斗星环保股份有限公司 | Process for producing amino acid solution for livestock and poultry died of diseases |
| CN114686295A (en) * | 2020-12-31 | 2022-07-01 | 涟水北斗畜禽无害化处理有限公司 | Separation and purification process for amino acid liquor of animals died of diseases |
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