Instant powder hollow granulation device and granulation process

Abstract

The invention belongs to the technical field of solid instant dry powder production, and particularly relates to an instant powder hollow granulation device and granulation process. The instant powderhollow granulation device comprises a concentrated solution sealed storage tank, a gas-liquid mixing pump, a gas-liquid separation tank and a gas diffuser which are connected in sequence, an inert gas storage tank is connected with the gas-liquid mixing pump to enable an inert gas and a concentrated solution to be subjected to gas-liquid mixing, the gas diffuser is connected back to the concentrated solution sealed storage tank, the concentrated solution sealed storage tank is connected with a plunger pump, and the plunger pump is connected with a spray drying tower. A hollow particle productprepared by the method is good in size uniformity, most of the diameter range is about 150-300mu m, and the rate of finished products is high.

Description

technical field [0001] The invention belongs to the technical field of solid instant dry powder production, and in particular relates to a hollow granulation device and a granulation process for instant powder. Background technique [0002] At present, domestic instant tea powder and other dry powder products of plant extracts, due to limitations in technology and equipment, are generally directly produced by spray drying at one time. The shape of the product is basically crystalline powder, and the particle size is mostly in the range of 80~ Between 250 mesh, such instant dry powder has poor fluidity, and it is difficult to disperse when it is dissolved and hydrated. It must be dispersed, dissolved and hydrated under the action of external forces such as stirring, and even warm or hot water is required. It is difficult to achieve normal temperature water or even Ice water dissolves, which adds trouble to people when drinking directly, reduces taste, and is inconvenient to b...

AI Technical Summary

Problems solved by technology

However, stirring and other mechanisms cannot make the bubbles of carbon dioxide gas smaller, nor can it make the gas and liquid mix uniformly. Although under the high pressure of the plunger pump, the gas is compressed violently, which has a certain effect of mixing and breaking the bubbles. , but the uniformity and bubble size are still unsatisfactory, the obtained tea powder has a poor effect of forming a hollow, the particle size is different, and the proportion of fine particles and powdery particles that have not been hollowed is still relatively large, which means that the formation of a hollow effect The yield of the product is low; moreover, although its fluidity and solubility have improved, the dissolution and hydration process is still long, and its dissolution in low temperature water is even less ideal

Images