SU881485A1

SU881485A1 - Unit for sorption drying of bacterial preparations

Info

Publication number: SU881485A1
Application number: SU802877860A
Authority: SU
Inventors: Эвелина Григорьевна Тутова; Павел Степанович Куц; Юрий Николаевич Тимонькин; Владимир Николаевич Давыдов; Александр Васильевич Купреев; Дмитрий Станиславович Слижук
Original assignee: Ордена Трудового Красного Знамени Институт Тепло- И Массообмена Им.А.В.Лыкова Ан Белсср
Priority date: 1980-02-01
Filing date: 1980-02-01
Publication date: 1981-11-15

Description

1one

Изобретение относитс к сорбционной сушке и может найти применение в микробиологической, пищевой, фармацевтической и других отрасл х промышленности при производстве материалов с регулируемой конечной влажностью , например влагочувствительных материалов биологического происхождени (молочно-кислых бактериальных препаратов и др.).The invention relates to sorption drying and can be used in microbiological, food, pharmaceutical and other industries in the production of materials with controlled final moisture, for example, moisture-sensitive materials of biological origin (lactic acid bacterial preparations, etc.).

-Известны установки дл сушки молочно-кислых бактериальных препаратов , содержащие распылительную камеру с форсунками, источник теплоносител и циклон.- Known installations for drying lactic acid bacterial preparations containing a spray chamber with nozzles, a source of heat transfer fluid and a cyclone.

Обезвоживание бактериальных препаратов производитс методом сушки до остаточной влажности не более 10%, при этом выход готового продукта по качественному показателю (сохранность жизнеспособных клеток) составл ет 10% 1.The dehydration of bacterial preparations is carried out by the method of drying to a residual moisture content of not more than 10%, while the yield of the finished product in terms of quality (preservation of viable cells) is 10% 1.

Недостатком этого метода вл етс значительна потер (до 90%) исходного продукта. Большинство бактериальных клеток сохран ет свою жизнеспособность до определенного предела , влажности, т.е. существует некотора критическа влажность, ниже которой клртки тер ют свою жизнеспособность . Исследовани показывают , что дл культур молочно-кислых бактерий така влажность соответствует 35-40%. Получить продукт с конечной влажностью 40% в распылительной сушилке невозможно, так как при такой влажности материал не удал етс из аппарата, подверга сь тепловой инактивации, что, в свою очередь, The disadvantage of this method is a significant loss (up to 90%) of the original product. Most bacterial cells retain their viability up to a certain limit, moisture, i.e. There is some critical moisture below which the cylinders lose their vitality. Studies show that for cultures of lactic acid bacteria, such humidity corresponds to 35-40%. It is impossible to obtain a product with a final moisture content of 40% in a spray dryer, since at this moisture the material is not removed from the apparatus, subjected to thermal inactivation, which, in turn,

10 приводит к значительной гибели вегетативных клеток.10 leads to significant death of vegetative cells.

Наиболее близкой к предлагаемой по технической сущности вл етс установка дл сорбционной сушки бак15 териальных препаратов, содержаща распылительную камеру/ подключенную к линии подачи жидкой биомассы и снабженную загрузочным бункером с дозатором дл сорбента, св занным Closest to the proposed technical entity is a plant for sorption drying of tank 15 preparations containing a spray chamber / connected to the supply line of liquid biomass and equipped with a loading hopper with a dosing unit for the sorbent associated

20 с нагнетателемвоздуха. 2J.20 with air blower. 2J.

Недостатком данной установки вл етс проведение процесса в нестерильных , услови х, что приводитк 1п625 лучению нестерильного продукта. Естественно , это неприемлемо в случае получени -продуктов о высокой конечной влажностью, так как при этом создаютс - благопри тные услови дл The disadvantage of this setup is to carry out the process in non-sterile conditions, which leads to the production of a non-sterile product. Naturally, this is unacceptable in the case of high final moisture content products, since this creates favorable conditions for

Claims

30 develop the postfunctional microflora. The purpose of the invention is to provide a sterile product. For this, the loading hopper and the pressurizer are made airtight, and a filtering device is additionally introduced into the communication line of the dispenser with the supercharger, and a multi-section screw-type heat exchanger with a steam jacket is additionally installed in front of the sorbent bin. The drawing shows schematically the proposed installation. The installation for the sorption suction of bacterial preparations contains a receiving hopper 1 with dispenser 2, a multi-auger screw heat exchanger 3 with a steam jacket, a loading hopper 4 with dispenser 5, spraying a device b installed in the spray chamber 7 and connected to the liquid biomass supply line 8, and a filling device 9. In the air supply line 10, a filter device 11 and a blower 12 are turned on. Line 10 is connected to a dispenser 5. The hopper 4 and the blower 12 are sealed. The installation works as follows. The sorbent supplied to the hopper 1 is metered by the dispenser 2 into the screw heat exchanger 3, in which it undergoes heat treatment (sterilization), then the sterile sorbent enters the loading hopper 4, from which through the dispenser 5 it is supplied by pneumatic conveying to the spraying device 6 (for example, three-channel nozzle) Air sorbent pneumatic transport system is fed through line 10 by compressor 12 through filtering device 11. The active component (biomass) supplied through line 8 is mixed with the sorbent using device b, and the finished product is collected in the chamber 7, it is fed to the packaging device 9. The proposed installation ensures the production and long-term storage of a high-quality sterile product. If the quality indicator is the number of viable cells, then this value in this installation is about 100%. The installation also makes it possible to obtain a finished product with a predetermined controlled final moisture content at high quality indicators. The installation makes it possible to carry out a continuous process of sorption drying and sterilization of the sorbent, while maintaining the physicochemical properties of the sorbent (flour, starch, bran), which is an integral part of the finished product. Claims An installation for the sorption drying of bacterial preparations containing a spray chamber connected to a liquid biomass supply line ... and equipped with a charging hopper with a dosing unit for a sorbent associated with an air blower is different in that obtaining a sterile product, the loading hopper and the blower are sealed, and a filter device is additionally inserted in the communication line of the dispenser with the blower, and a multisection unit is additionally installed in front of the bunker auger heat exchanger with steam jacket. Sources of information taken into account during the examination 1.Kuts P.S., Tutova EG. Drying of microbiological preparations, M., Nauka, 1975, p. 10-11.

2. USSR author's certificate number 462504, cl. From 12 F 1/08, 1973.

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