SU835407A1

SU835407A1 - Method of obtaining nitrogen-phosphorus food addition for animals

Info

Publication number: SU835407A1
Application number: SU782614211A
Authority: SU
Inventors: Адольф Николаевич Сарбаев; Галина Петровна Герберт; Анатолий Григорьевич Корякин; Людмила Ивановна Мартьянова
Original assignee: Предприятие П/Я Г-4302
Priority date: 1978-04-03
Filing date: 1978-04-03
Publication date: 1981-06-07

Description

Изобретение относитс к способам получени азотно-фосфорных кормовых добавок дл жвачных животных.This invention relates to methods for producing nitrogen-phosphorus feed additives for ruminants.

Известны способы получени азотно-фосфорных добавок с соотношением N:P от 3:1 до 10:1 путем смешивани карбамида или раствора карбамида с фосфатами аммони .Methods are known for preparing nitrogen-phosphorus additives with an N: P ratio of 3: 1 to 10: 1 by mixing urea or a urea solution with ammonium phosphates.

Однако при передозировке кормовых добавок , получаемых этими способами, по вл етс опасность интоксикации животных вследствие высокой скорости гидролиза карбамида с выделением аммиака в рубце жвачных животных.However, in case of overdose of feed additives obtained by these methods, there is a risk of animal intoxication due to the high rate of hydrolysis of urea with the release of ammonia in the rumen of ruminants.

Известен также способ получени азотнофосфорных кормовых добавок путем пиролиза смесей карбамида с фосфатами аммони при 150-180°С 1.There is also known a method for producing nitrogen-phosphorus feed additives by pyrolysis of mixtures of urea with ammonium phosphates at 150-180 ° C.

Полученные указанным способом кормовые добавки обладают значительно меньшей токсичностью по сравнению с используемыми в насто щее врем . В состав этих кормовых добавок, креме карбамида, фосфатов аммони и биурета, входит цианурова кислота в количестве 3-9%.The feed additives obtained by this method are significantly less toxic compared to those currently used. The composition of these feed additives, carbamide cream, ammonium phosphate and biuret, includes cyanuric acid in the amount of 3-9%.

По данным животноводов цианурова кислота трудно гидролизуетс в желудках жвачных животных из-за отсутстви ферментов , расшепл юших ее. Присутствие циануровой кислоты в кормовых средствах нежелательно , так как она может выдел тьс According to livestock breeders, cyanuric acid is difficult to hydrolyze in the stomachs of ruminants due to the absence of enzymes that are split. The presence of cyanuric acid in feed means is undesirable because it can be released

в виде молекул в молочных продуктах. Вли ние циануровой кислоты на .здоровье людей до насто шего времени не изучено. Поэтому дл лактируюших животных целесообразно примен ть кормовые средства, не содержащие циануровой кислоты;in the form of molecules in dairy products. The effect of cyanuric acid on people's health has not yet been studied. Therefore, for lactating animals, it is advisable to use feeds that do not contain cyanuric acid;

Целью изобретени вл етс получение малотоксичной азотно-фосфорной кормовой добавки дл жвачных животных с незначительными примес ми циануровой кислоты. Поставленна цель достигаетс тем, что нагревание смеси карбамида с фосфатами аммони при 150-180°С провод т при избыточном давлении 10-100 мм рт. ст., создаваемом выдел ющимис при реакции газами .The aim of the invention is to provide a low-toxic nitrogen-phosphorus feed additive for ruminants with minor impurities of cyanuric acid. This goal is achieved by heating the mixture of urea with ammonium phosphate at 150-180 ° C under an overpressure of 10-100 mm Hg. Art., created by gases evolving during the reaction.

Создание указанного избыточного давлени позвол ет осуществл ть процесс сплавлени , при котором происход т образование биурета и конденсаци фосфатов с одновременным подавлением нежелательной реакции образовани циануровой кислоты . Однако при пиролизе карбамида, вз того отдельно с целью получени биурета,The creation of said overpressure permits a fusion process, in which biuret formation and phosphate condensation occur while simultaneously suppressing the undesirable cyanuric acid formation reaction. However, during the pyrolysis of urea, taken separately in order to obtain biuret,

не удаетс избежать образовани заметных количеств (3-12%) циануровой кислоты при различных давлени х.it is not possible to avoid the formation of appreciable quantities (3-12%) of cyanuric acid at different pressures.

Пример 1. При нагревании смеси, содержащей 75% карбамида и 25% фосфатаExample 1. By heating a mixture containing 75% urea and 25% phosphate

Claims

ammonium at 170 ° C and a stirring speed of 300 rpm for 2 hours under a pressure of evolved gases of 10 mm Hg. Art. get the product composition, weight. %: Urea 46.2 Biuret20.8 Ammonium Phosphates 33.0 Cyanuric Acid Traces The nutrient content of the product (N + P) is 44.5%, the ratio N: P 34.55 is about 48-1 - 9; 9h-- Example

2. A mixture of the composition given in Example 1 is heated at 150 ° C and a stirring speed of 300 rpm for 5 hours at a pressure of evolving gases of 50 mm Hg. Art. A product of the composition is obtained, wt.%: Urea 48.4 Biuret19.2 Ammonium phosphates 32.4 Cyanuric acidFollow The content of nutrients in the product (N + P) is 45.24%, N: P ratio of 3.9: 1. Example

3. A mixture of the composition given in Example 1 is heated at 180 ° C and a stirring speed of 350 rpm for 1 hour at a pressure of evolving gases of 80 mm Hg. Art. A product of the composition is obtained, wt.%: Urea 47.5 Biuret 18.6 Ammonium phosphate 33.1 Cyanuric acid 0.8 Nutrient content of the product (N + P) 44.90%, N: P ratio 3.77: 1. Example

4. To 705 g of urea melted at 135 ° C, 295 g of crystalline ammonium phosphate is added with stirring (400 rpm), after which the temperature of the mixture is raised to 170 ° C and maintained at this temperature for 2 hours at a pressure of evolving gases of 100 mm Hg Art. A product of the composition, wt.% Is obtained: Urea 52.0 Biuret15.3 Ammonium phosphates 32.7 Cyanuric acidFollow The nutrient content of the product (N-fP) is 45.45%, the ratio N: P 3.87: 1. Claims A method for producing a nitrogen-phosphorus feed additive for animals containing urea, biuret, and ammonium phosphates by heating a mixture of urea with ammonium phosphates at 150-180 ° C and mixing, characterized in that in order to reduce the cyanuric acid content in the product, heating is carried out at an overpressure of gaseous reaction products of 10-100 mm Hg. Art. Sources of information taken into account in the examination 1. USSR author's certificate in patent number 1939339, cl. A 23 K 1/22, 1977.