CN108892610B - Preparation method of calcium fatty acid for feed - Google Patents
Preparation method of calcium fatty acid for feed Download PDFInfo
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- CN108892610B CN108892610B CN201810405884.7A CN201810405884A CN108892610B CN 108892610 B CN108892610 B CN 108892610B CN 201810405884 A CN201810405884 A CN 201810405884A CN 108892610 B CN108892610 B CN 108892610B
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
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- A23K20/158—Fatty acids; Fats; Products containing oils or fats
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Abstract
The invention belongs to the field of feed additives, and particularly relates to a preparation method of calcium fatty acid for feed. The method comprises the following steps: (1) adding fatty acid into a reaction kettlePreheating to 45-110 ℃, heating while stirring until the fatty acid is completely melted; (2) adding calcium oxide or a mixture of calcium oxide and a strong alkaline substance in an amount which is 0.5-3.5 equivalent to that of the fatty acid, and fully and uniformly mixing; (3) adding water with 0.5-3 equivalent of calcium oxide, adding glycerol or emulsifying fatty acid by using glycerol generated by reaction to reach the particle size of 0.1-100 mu m; (4) adding catalyst TiO2Heating to 60-230 ℃, mixing and stirring; (5) and (4) supplementing water to keep the equivalent of water in the step (3), and dehydrating after full reaction to obtain the fatty acid calcium. The invention adopts TiO2The catalyst and the glycerol produced by the reaction are used as the emulsifier, so that the reaction rate is accelerated, the reaction is more complete, and the high-efficiency and high-yield preparation of the calcium fatty acid for feed is realized.
Description
Technical Field
The invention belongs to the field of feed additives, and particularly relates to a preparation method of calcium fatty acid for feed.
Background
Fat is the most energetic nutrient, but is not fully utilized because it can be destroyed by the rumen of ruminants. Scott proposed to convert fat to calcium fatty acid, an excellent high-energy feed additive for ruminants, to make protective fat in the early 80 s to resist rumen damage, so that fat is absorbed in the small intestine and the bioavailability of fat is improved. Therefore, the fatty acid calcium is added into the feed, so that the influence on rumen microorganisms can be avoided, the feed digestibility is improved, the fatty acid can be effectively utilized, and the quality of animal products is improved. The fatty acid calcium can effectively improve the energy level in the feed and reduce the concentration ratio of the feed, thereby reducing the feed cost and having obvious economic benefit.
At present, the application of fatty acid calcium as a feed additive to the breeding production of dairy cows and beef cattle in animal husbandry is common abroad. Particularly, during the lactation period of the dairy cows and the fattening period of the beef cattle, the interference of fat on rumen microorganisms can be avoided, and energy can be effectively supplemented; calcium ion can promote animal milk secretion, promote skeleton development, metabolism and muscle activity, and reduce nutritional and metabolic diseases (loose, soft, brittle, swelling and deformation, abnormal posture) of milk cow and beef cattle.
In recent years, the development and application of fatty acid calcium products are still in the beginning stage in China. In order to fully utilize rich vegetable oil resources in China, research and develop a novel feed additive and improve the economic benefit of animal husbandry, cottonseed oil is used as a raw material, and a large-scale production and processing technology of fatty acid calcium is explored.
The prior art related to the present invention is:
the prior art is a calcium chloride method: fatty acid or triglyceride thereof and sodium hydroxide are saponified and then subjected to double decomposition reaction with calcium chloride to generate fatty acid calcium.
Chinese patent publication No. CN102417444A discloses preparation of fatty acid calcium from long-chain saturated or unsaturated fatty acids such as stearic acid, palmitic acid, and oleic acid; chinese patent publication No. CN1685921A discloses a method for preparing fatty acid calcium from corn oil; chinese patent publication No. CN102731286A discloses the preparation of fatty acid calcium from lard, tallow, rapeseed oil, sunflower oil, safflower oil, soybean oil, olive oil, corn oil, palm oil, fish oil and their fatty acids, and mixtures thereof in any proportions.
Chinese patent publication No. CN1752064A discloses a preparation method of long-chain fatty acid calcium salt for high-energy feed additive, which is mainly technically characterized in that natural vegetable oil and fat are mixed with NaOH solution, after saponification is carried out for 3 hours at the temperature of soap solution of 95-98 ℃, the saponification end point is set when the saponification value is more than or equal to 93 percent, CaCl is used2Precipitating the solution, washing, dehydrating, drying and crushing to obtain the long-chain fatty acid calcium salt.
Chinese patent publication No. CN1566062A relates to a simple and convenient production process of fatty acid derivative calcium fatty acid, which is characterized by a one-pot continuous operation, wherein fatty acid and water are placed in a reaction kettle, stirring is started to maintain the temperature in the kettle at 60-80 ℃, liquid caustic soda with a total amount of 2/3 and solid calcium chloride with a total amount are added, stirring is carried out for 10 minutes, then the remaining liquid caustic soda with a total amount of 1/3 is slowly added, and stirring is stopped after the reaction is finished.
Chinese patent publication No. CN106278871A discloses a method for preparing fatty acid calcium from cottonseed oil: (1) saponification reaction: putting cottonseed oil into a saponification reaction kettle, heating to 40-85 ℃, then putting alkali liquor with the weight of 20-50% of the weight of the cottonseed oil, wherein the concentration of the alkali liquor is 20-40%, stirring, heating to 100-125 ℃, and keeping the temperature for 40-90 minutes; (2) and (3) neutralization reaction: adding water with the weight 1-3 times that of the cottonseed oil into the material after the saponification reaction, stirring and diluting, and adding an acid solution for neutralization until the pH value is 6.5-7.5; (3) double decomposition reaction: stirring the neutralized materials, and dropwise adding a calcium chloride solution with the concentration of 5-25% at the temperature of 55-75 ℃ until all the neutralized materials are converted into fatty acid calcium precipitates; (4) centrifuging and drying.
The main disadvantages of the first prior art are: chloride ions in the sewage can cause pollution to the environment; the method comprises the following steps of (1) adopting expensive fatty acid or grease as a raw material for preparing fatty acid calcium; low efficiency and complex process.
In the second prior art, fatty acid or triglyceride reacts with calcium oxide, calcium hydroxide or magnesium oxide and magnesium hydroxide to generate fatty acid calcium.
The starting materials employed in U.S. patent publication No. US005783714A are aliphatic carboxylic acids having 12 to 22 carbon atoms (preferred acids include behenic acid, lauric acid, myristic acid, palmitic acid and stearic acid) and calcium hydroxide. Chinese patent publication No. CN102417444A discloses a process for producing fatty acid calcium by a one-step water method, which comprises: the mixture of fatty acid and water reacts with calcium hydroxide or calcium oxide at a certain temperature for a certain time according to a certain proportion to obtain the fatty acid calcium.
US patent publication US20110039932a1 uses the fusion process and teaches that the inventive reaction vessel comprises a continuous or batch reactor, indirectly or directly heated, with multiple agitation and shearing elements, suitable for high viscosity materials. In the examples 300g of soybean oil was added, then the soybean oil was heated to 50 ℃, 45g of magnesium hydroxide was added and mixed thoroughly. The mixture was then heated until the temperature reached 285 c at which time saponification occurred and the temperature was raised to 290 c, and the reacted material was removed from the vessel and placed in a pan to cool and dry to form small particles of free flowing magnesium salt.
Chinese patent publication No. CN102731286A relates to a method for producing fatty acid calcium salt from animal and vegetable fat or fatty acid, which comprises three steps of melting raw materials, reacting, cooling and crushing. The method for directly generating fatty acid calcium by one-step reaction of fat or fatty acid and calcium hydroxide comprises the following steps: (1) melting of raw materials: adding animal and vegetable fat or fatty acid as raw materials into a reaction kettle, and stirring while heating until the raw materials are in a molten state; (2) adding food-grade calcium hydroxide accounting for 10-20% of the weight of the raw materials into a reaction kettle, and reacting for 20-30 minutes at 120-150 ℃; (3) cooling and crushing to discharge the reaction product, and cooling and crushing to obtain the finished product. Preferably, the composition is stored at 20 deg.C or below, and can maintain bioactivity for 6 months under normal conditions, and can be stored for a longer time in winter.
The US3376327 patent uses fatty acid containing 12-22 carbon atoms as raw material, which is heated to 32-65 deg.c, and calcium oxide, magnesium oxide, calcium hydroxide, or their mixture is added while stirring until a liquid mixture is formed, the amount of alkali metal is 1.25-5.0 equivalents of fatty acid, when the temperature suddenly rises to 20 deg.c, the mixture is poured onto a flat board, cooled to room temperature, and crushed to desired particle size.
The raw materials adopted by the US2003/0092923A1 comprise C10-22, comprise mono-glyceride, di-glyceride and triglyceride, DHA-rich fish oil is selected, the fish oil is glyceride, the reaction is incomplete, the residual oil content in the reaction product exceeds 5%, the residual 5% of glyceride in the reaction product cannot be agglomerated, and the stability is good. The patent uses the addition of palmitic acid to fish oil to reduce the content of glycerides which are the starting materials of the reaction. Adding 20-35% of fish oil and 50-80% of fatty acid, preheating at 49-60 ℃ to form calcium oxide equivalent to 22.5-2.75 equivalents of grease, uniformly dispersing, adding water equivalent to 2.5-3.5 equivalents of calcium oxide, heating to 71-77 ℃, continuously stirring to form a uniform mixture, pouring the uniform mixture on a plane, and reacting for 5-60 minutes at 99-115 ℃.
US2890232 uses fatty acids (aliphatic, monocarboxylic acids, high molecular weight acids), metal oxides or metal hydroxides in excess of 50% of the stoichiometric point, and 0.3-0.5 moles of water per mole of metal oxide or metal hydroxide (alkaline earth elements of the second main group: beryllium, magnesium, calcium, strontium, cadmium and barium), the reaction being completed in 3-5 minutes at a reaction temperature of about 121-177 ℃ (exothermic reaction being initiated at a temperature that varies with the type of fatty acid and the particular metal oxide or hydroxide, the exothermic reaction evaporating a small amount of water, the temperature rising until an equilibrium of 121-149 ℃ is reached, the product being light in color, the final product containing a small amount of unreacted fatty acid, cooling and grinding of the product At the same time, the heat released in the exothermic reaction is fully utilized. The reaction is exothermic, and the exothermic reaction is continuously exothermic in the reaction process, when the temperature reaches the equilibrium, the exothermic reaction is finished, and the reaction also reaches the equilibrium, so that whether the reaction reaches the equilibrium is judged by taking the temperature as an index.
US patent No. US8853435B1 began to use fatty acids or mixtures of fatty acids (tallow and non-tallow fatty acids, fatty acids from palm oil, soybean oil, fish oil, linseed oil and mixtures thereof) instead of triglycerides (e.g. soybean oil, etc.), with no triglycerides, no excess magnesium oxide, and no by-product glycerol. The alkaline substance is selected from magnesium oxide or magnesium hydroxide, and is selected from alkaline substances which can completely neutralize 15-75% of tallow fatty acid theoretically, preferably 25-55%. The temperature is preferably 115 to 148 ℃. Reacting for a sufficient time to finally prepare the partially salified product.
In the US2009/0220638A1 patent, fat or oil is preheated before reaction at about 20-50 ℃, and the amount of calcium oxide added is the same as the molar amount of fatty acid contained in the fat or oil. After the calcium oxide is added to the preheated fat or grease, water is added. The amount of water added is at least stoichiometric to complete the formation of calcium hydroxide from calcium oxide, the excess water being inversely proportional to the fatty acid content of the final product calcium soap, so that the product contains 6% water, 84% fatty acid and 10% glycerol. The presence of glycerol in the final composition of the feed is particularly useful for monogastric animals (pigs, chickens, etc.) because it contributes to the digestibility of the fats due to the formation of micelles of glycerol in these animals. The addition amount of the glycerol and other emulsifiers is usually 4-12%, the reaction temperature is 100-150 ℃, the pressure is 2-4 bar, and the reaction time is enough.
US patent US005382678A uses a glyceride-containing fatty acid feedstock (palm oil), US20100179347a1 uses fish oil, US2016/0270427Al uses palm oil and soybean oil, US20110039932a1 uses soybean oil, 50% soybean oil and 50% fish oil, 75% fish oil and 25% stearin, 50% fish oil and 50% stearin, tallow and fish oil, and an alkali metal compound (calcium oxide or magnesium oxide) to prepare calcium fatty acid.
US patent 4826694 uses palm oil, which is reacted with calcium oxide from a hopper and hot palm oil distillate (96 c) from a feed pipe in predetermined proportions in a mixing pump to produce calcium fatty acid. The US patent 005382678A uses a fusion process, which has the advantage that the product is in the form of non-sticky free-flowing dust-free granules. Adding about 10-120% by weight of water to a glyceride-containing fatty acid feedstock (palm oil) and a basic alkaline earth metal compound (calcium oxide or magnesium oxide) to form an aqueous suspension medium; heating the aqueous suspension medium to a temperature of between about 40 ℃ and about 130 ℃; maintaining the reaction temperature sufficient to complete the salt formation of the fatty acids and to hydrolyze the glycerides to fatty acid salts and glycerin; the fatty acid salt product is recovered in a dry manner as a brittle solid having a glyceride content of less than about 5% by weight.
The second prior art has the defects that most of the adopted raw materials are high-cost fatty acid or grease; calcium hydroxide or magnesium hydroxide which is difficult to dissolve in water and grease react incompletely, and the reaction rate is slow; the product is not uniform and has unstable quality, for example, the product of the patent US2890232 is wiredrawing calcium soap, has high viscosity, not only consumes time and labor when cleaning a reaction tank, but also is not suitable for granulation in industrial production; the product has special requirements on storage conditions, and can be hardened into blocks in summer and is not durable for storage. In addition, the process conditions are harsh, such as in patent US2009/0220638A1, which is a reaction under pressure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for preparing a soap stock with low-cost cottonseed oil and cottonseed oil soap stock fatty acid as raw materials and TiO2As a reaction catalyst, the reaction product glycerol can just be used as an emulsifier of fatty acid. Under the action of the catalyst and the emulsifier, the reaction rate of the fatty acid calcium is faster, and the reaction is more complete.
The technical scheme provided by the invention is as follows: a preparation method of calcium fatty acid for feeding is characterized by comprising the following steps:
(1) adding fatty acid into a reaction kettle, preheating to 45-110 ℃, and stirring while heating until the fatty acid is completely melted;
(2) adding calcium oxide or a mixture of calcium oxide and a strong alkaline substance in an amount which is 0.5-3.5 equivalent to that of the fatty acid, and fully and uniformly mixing;
(3) adding water with 0.5-3 equivalent of calcium oxide, adding glycerol or using glycerol generated by reaction as an emulsifier, and emulsifying fatty acid until the particle size is 0.1-100 mu m;
(4) adding catalyst TiO2Heating to 60-230 ℃, mixing and stirring;
(5) and (4) supplementing water to keep the equivalent of the water in the step (3), and dehydrating after full reaction to obtain the fatty acid calcium.
By controlling key process parameters, the finally generated fatty acid calcium is milk white or light yellow particles. The obtained fatty acid calcium contains impurities such as glycerol, and can be washed with water to improve purity.
The technical scheme of the invention is that cheap cottonseed oil or/and waste cottonseed oil soapstock are used, and calcium oxide is used as a reactant, so that the preparation of the calcium fatty acid for feed is realized; the innovation point is that TiO is adopted2The catalyst and the glycerol produced by the reaction are used as the emulsifier, and the combination of the catalyst and the glycerol accelerates the reaction rate, makes the reaction more complete, and realizes the high-efficiency and high-yield preparation of the calcium fatty acid for feed.
Further included in the invention are the following optimizations or/and improvements:
in one preferred embodiment, the fatty acid in step (1) is derived from cottonseed oil and/or cottonseed oil soapstock;
in the second preferred scheme, the preheating temperature in the step (1) is 65-85 ℃;
preferably, in the third step (2), calcium oxide or a mixture of calcium oxide and a strong alkaline substance with the equivalent weight of 1.5-3.0 of fatty acid is added;
fourthly, adding water equivalent to 1.5-2.5 equivalents of calcium oxide into the step (3);
fifthly, in the preferable scheme, the emulsification in the step (3) is carried out until the particle size is 1-50 μm;
sixthly, in the step (4), the catalyst TiO is selected2The addition amount of (A) is 0.001-0.1%;
preferably, in the step (4), the temperature is increased to 60 to 180 ℃.
The invention has the beneficial effects that:
(1) zero pollution: avoids the use of chloride ion (Cl) harmful to environment and animals-) The reaction raw material (calcium chloride) and the water removed after the reaction can be used as the raw material (alkaline water) for repeated use;
(2) the reaction rate is fast: adding catalyst TiO2The glycerol produced by the reaction is used as the emulsifier of the fatty acid, so that the reaction rate is high, and the reaction is uniform and sufficient;
(3) the cost is low: cheap cottonseed oil or/and waste cottonseed oil soapstock is used as a raw material;
(4) the quality is good: the product has uniform texture, is not easy to agglomerate and agglomerate, has good stability and is storage-resistant;
(5) the process is simple and easy to implement.
The technical solution of the present invention will be described in detail with reference to examples.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described in detail with reference to the following examples.
Example 1:
weighing 20kg of cottonseed oil, and preheating to 45 ℃; 0 was added.5 equivalents of calcium oxide, and mixing well; heating to 60 ℃; mixing uniformly; adding water 0.5 equivalent to calcium oxide, emulsifying fatty acid to particle diameter of 0.1 μm with glycerol generated by reaction as emulsifier, and adding 0.001% TiO2Reacting for 2 hours, washing out impurities such as glycerin and the like by water, and dehydrating until the water content is about 5 percent to obtain milk white or light yellow particles. The purity can reach more than 90 percent, and the yield can reach more than 92 percent. The waste water has strong alkalinity, does not contain chloride ions, can be used as a reactant for recycling, and has zero pollution. The final product has uniform quality, is not easy to agglomerate and agglomerate in hot summer, is easy to store and is convenient to transport. In a semi-bionic rumen-bypass experiment, the average disappearance rate of fatty acid calcium is 0.26%, and the result shows that the rumen-bypass performance of the fatty acid calcium is good.
Example 2:
weighing 30kg of cottonseed oil, and preheating to 95 ℃; adding 2.0 equivalent of calcium oxide, and fully and uniformly mixing; heating to 150 ℃; mixing uniformly; adding water 1.5 equivalent to calcium oxide, adding glycerol as emulsifier, emulsifying fatty acid to particle diameter of 1-10 μm, and adding 0.01% TiO2Reacting for 3 hours, washing out impurities such as glycerin and the like by water, and dehydrating until the water content is about 5 percent to obtain milk white or light yellow particles. The purity can reach more than 90 percent, and the yield can reach more than 92 percent. The waste water has strong alkalinity, does not contain chloride ions, can be used as a reactant for recycling, and has zero pollution. The final product has uniform quality, is not easy to agglomerate and agglomerate in hot summer, is easy to store and is convenient to transport. In a semi-bionic rumen-bypass experiment, the average disappearance rate of fatty acid calcium is 0.33%, and the result shows that the rumen-bypass performance of the fatty acid calcium is good.
Example 3:
weighing 40kg of cottonseed oil, and preheating to 110 ℃; adding a mixture of 3.5 equivalents of calcium oxide and sodium hydroxide, and fully and uniformly mixing; heating to 230 ℃; mixing uniformly; adding water equivalent to 3 of calcium oxide, emulsifying fatty acid to particle diameter of 1-10 μm with glycerol generated by reaction as emulsifier, and adding 0.1% TiO2Reacting for 5 hours, washing out impurities such as glycerin and the like by water, and dehydrating until the water content is about 5 percent to obtain milk white or light yellow particles. The purity can reach more than 90 percent, and the yield can reach more than 92 percent. The waste water has strong alkalinity and does not contain chloride ions,can be used as a reactant for recycling, and has no pollution. The final product has uniform quality, is not easy to agglomerate and agglomerate in hot summer, is easy to store and is convenient to transport. In a semi-bionic rumen-bypass experiment, the average disappearance rate of fatty acid calcium is 0.40%, and the result shows that the rumen-bypass performance of the fatty acid calcium is good.
Example 4:
weighing 20kg of cotton oil nigre fatty acid, and preheating to 90 ℃; adding 3.5 equivalent of calcium oxide, and fully and uniformly mixing; heating to 120 ℃; adding water equivalent to 3 of calcium oxide, adding glycerol as emulsifier, emulsifying fatty acid to particle diameter of 10-100 μm, and adding 0.1% TiO2Reacting for 5 hours, washing out impurities such as glycerin and the like by water, and dehydrating until the water content is about 5 percent to obtain milk white or light yellow particles. The purity can reach more than 90 percent, and the yield can reach more than 92 percent. The waste water has strong alkalinity, does not contain chloride ions, can be used as a reactant for recycling, and has zero pollution. The final product has uniform quality, is not easy to agglomerate and agglomerate in hot summer, is easy to store and is convenient to transport. In a semi-bionic rumen-bypass experiment, the average disappearance rate of fatty acid calcium is 0.28%, and the result shows that the rumen-bypass performance of the fatty acid calcium is good.
Example 5:
weighing 2kg of cotton oil soap stock fatty acid and 20kg of cottonseed oil, mixing, and preheating to 90 ℃; adding 3.5 equivalent of calcium oxide and potassium hydroxide, and fully and uniformly mixing; heating to 120 ℃; adding water equivalent to 3 of calcium oxide, emulsifying fatty acid to particle diameter of 10-50 μm with glycerol generated by reaction as emulsifier, and adding 0.1% TiO2(ii) a Reacting for 5 hours, washing out impurities such as glycerin and the like by water, and dehydrating until the water content is about 5 percent to obtain milk white or light yellow particles. The purity can reach more than 90 percent, and the yield can reach more than 92 percent. The waste water has strong alkalinity, does not contain chloride ions, can be used as a reactant for recycling, and has zero pollution. The final product has uniform quality, is not easy to agglomerate and agglomerate in hot summer, is easy to store and is convenient to transport. In a semi-bionic rumen-bypass experiment, the average disappearance rate of the fatty acid calcium is 0.36%, and the result shows that the rumen-bypass performance of the fatty acid calcium is good.
It should be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, however, the present invention is not limited thereto, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and such modifications and improvements added thereto are considered to be within the scope of the invention.
Claims (8)
1. A preparation method of calcium fatty acid for feed is characterized by comprising the following steps:
(1) adding fatty acid into a reaction kettle, preheating to 45-110 ℃, and stirring while heating until the fatty acid is completely melted;
(2) adding calcium oxide equivalent to 0.5-3.5 equivalents of fatty acid, and fully and uniformly mixing;
(3) adding water with 0.5-3 equivalent of calcium oxide, adding glycerol or using glycerol generated by reaction as an emulsifier, and emulsifying fatty acid until the particle size is 0.1-100 mu m;
(4) adding catalyst TiO2Heating to 60-230 ℃, mixing and stirring;
(5) and (4) supplementing water to keep the equivalent of the water in the step (3), and dehydrating after full reaction to obtain the fatty acid calcium.
2. The method for preparing calcium fatty acid for feed according to claim 1, wherein the fatty acid in the step (1) is derived from cottonseed oil and/or cottonseed oil soapstock and a mixture with other fats of plant or animal origin.
3. The preparation method of the calcium fatty acid for feed according to claim 1, wherein the preheating temperature in the step (1) is 65-85 ℃.
4. The preparation method of the calcium fatty acid for feed according to claim 1, wherein calcium oxide with an equivalent weight of 1.5-3.0 to the fatty acid is added in the step (2).
5. The preparation method of the calcium fatty acid for feed according to claim 1, characterized in that water with an equivalent of 1.5-2.5 of calcium oxide is added in the step (3).
6. The preparation method of the calcium fatty acid for feed according to claim 1, wherein the calcium fatty acid for feed is emulsified in the step (3) until the particle size is 1-50 μm.
7. The preparation method of calcium fatty acid for feed according to claim 1, wherein the catalyst TiO in the step (4) is TiO2The amount of the additive (B) is 0.001-0.1%.
8. The preparation method of the calcium fatty acid for feed as claimed in claim 1, wherein the temperature in the step (4) is raised to 60-180 ℃.
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| JPH026428A (en) * | 1988-06-25 | 1990-01-10 | Nippon Oil & Fats Co Ltd | Production of granular metallic salt of fatty acid |
| US5250714A (en) * | 1991-09-17 | 1993-10-05 | Church & Dwight Co., Inc. | Fatty acid salt production |
| JP4653372B2 (en) * | 2000-02-24 | 2011-03-16 | 油化産業株式会社 | Method for producing fatty acid salt and livestock feed containing the fatty acid salt |
| US20030130348A1 (en) * | 2001-11-16 | 2003-07-10 | Strohmaier George K. | Polyunsaturated oil saponification |
| CN1517328A (en) * | 2003-01-15 | 2004-08-04 | 诺雷尔收购公司 | Method for producing fatty acid calium salt by high glyceride content oil |
| CN102417444A (en) * | 2010-09-28 | 2012-04-18 | 江苏中鼎化学有限公司 | Process for producing fatty acid calcium based on one-step water method |
| CN105838504A (en) * | 2016-06-07 | 2016-08-10 | 石河子大学 | Method for producing feeding fatty acid by utilizing cotton seed oil dregs |
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