The spray drying process uses superheated steam at near-atmospheric pressure.

Abstract

------31 / 03 / 2568------(OCR) The OCR 10KL spray drying process, which uses superheated steam at near-atmospheric pressure as the drying medium, is designed to spray dry liquid food and biological materials. It aims to reduce water vapor condensation, which causes dry particles to adhere to the drying chamber walls and particle collectors. The process consists of two parts: a spray drying section and a particle separation section. The crucial part is the particle separation section, which comprises two cyclones. The first cyclone is used to separate water vapor from the dry particles. The dry particles and some water vapor then flow through an air lock valve to a Venturi joint. To further reduce water vapor condensation passing through the dry particles, high-temperature hot air produced by a high-pressure fan and heater is used. The second cyclone is used to separate the dry particles from the hot air. The dry particles are finally collected in a particle collector. ------------ The spray drying process uses superheated steam at near-atmospheric pressure conditions. It is an artificial drying medium designed for spray drying food and biological materials in a state of atomization. The liquid is treated with the aim of reducing water vapor condensation, which causes dry particles to adhere to the walls of the drying chamber. The particle collection equipment consists of two parts: a spray drying section and a separation section. The dry particle separation section, a key component, consists of two cyclones. The first cyclone is used in... The water vapor is separated from the dry particles; the dry particles and some water vapor then flow through an air lock valve. To the Venturi joint, to reduce condensation of water vapor passing through with the dry particles using high-temperature hot air. The first stage uses a high-pressure fan and heater, while the second cyclone is used to separate the dry particles. From the hot air, dry particles are eventually collected in the particle capture device.

Claims

------31 / 03 / 2568------(OCR) OCR 10KL1 The spray drying process using near-atmosphere superheated steam as the drying medium is characterized by two sections: a spray drying section and a particle separation section. The spray drying section consists of a drying chamber (1) which is fed by a rotary pump (2) through any type of nozzle, consisting of two types of fluid nozzles (3). The second fluid, in addition to the feed, may be hot air produced by an air compressor (4) or superheated steam. The type of second fluid can be selected by opening / closing a valve (5). In the case of using superheated steam as the drying medium, superheated steam is produced by heating saturated steam produced by an external boiler using a heater (6) which is operated by a Proportional Integral Derivative (PID) controller. The drying medium is fed into the drying chamber by a high-pressure fan (7), which can be set to either hot air or superheated steam by opening / closing valve (5). The particle separation section is where the drying medium is located.This section separates the dry particles from the water vapor exiting the drying chamber. It consists of two cyclones. The first cyclone (8) is used to separate the water vapor from the dry particles. A high-pressure fan (9) draws the water vapor at the top outlet of the cyclone. The remaining dry particles and water vapor flow out the bottom of the cyclone (8), which is connected to the particle collector by an air lock valve (10). This is a rotary valve with a rotor-to-valve body clearance of less than 0.1 mm. The rotor rotates slowly to fill each rotor cavity with dry particles, and the air lock valve prevents water vapor from flowing into the particle collector, reducing any condensation that might escape through the valve with the dry particles. Some of the water vapor drawn in with the dry particles is then diluted with high-temperature hot air by installing a Venturi coupling (11). This high-temperature hot air is produced using a high-pressure fan (12). A heater (13) raises the air temperature above the water vapor saturation temperature. The dry particles are separated from the hot air by the second cyclone (13) and collected in the particle collector (14). ------------ 1. Spray drying is a process that uses superheated steam at near-atmospheric pressure. The unique drying medium consists of two parts: a spray drying section and... Dry particle separator 1) Spray drying can use hot air or superheated steam as the drying medium. The drying machine consists of a drying chamber (1) which is fed with liquid using a rotary pump (2). Feeding through the nozzle consists of two types of fluid nozzles (3) with another type of fluid. In addition to the feed, the air may be hot air produced by an air compressor (4) or steam. Superheated. Alternatively, another type of fluid can be selected by closing / opening valve (5) in In the case where superheated steam is used as the drying medium, superheated steam is produced by applying heat. The saturated steam, produced from an off-process boiler, is heated using a cooling device. Hot (6) which is controlled by a PID controller feeds the drying medium into High-pressure fan-assisted drying chamber (7) which can be set to hot air or steam. Superheating can be achieved by closing / opening the valve (5). 2) Dry particle separation section, to separate dry particles from the drying medium. This section has been Designed to reduce water condensation in the dry particle separation stage, it consists of two cyclones. The first cyclone (8) is used to separate water vapor from dry particles by a pressure fan. High (9) helps to draw steam at the top outlet of the cyclone. The dry particles and remaining steam will flow. It exits through the bottom of the cyclone (8), which is connected to the particle collection device with a locking valve. Air (10) which is a rotary valve with a distance between the rotor and the valve body less than 0.1 The millimeter rotor rotates slowly to allow the dry particles to fill each channel of the rotor, and... It prevents water vapor from flowing through the air lock valve into the particle collection equipment and to reduce... The condensation of water vapor that may flow through the air-locking valve along with dry particles causes dilution. Dilute the steam by mixing it with hot, high-temperature air by installing a Venturi joint (11) to It mixes dry particles, which may contain some water vapor, as they flow through the air lock valve with hot air. Produced by a high-pressure fan (12) with a heater (13) to increase the temperature of the air. High pressure is applied above the saturation temperature of the water vapor, then the dry particles are separated. The air is heated by a second cyclone (13) and collected in a particle collector. (14)

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