RU54786U1 - SPRAY DRYER - Google Patents

Abstract

The utility model relates to pharmaceutical, food, chemical and other related industries and can be used to dry aqueous or other solutions of various substances to obtain dry extracts of biologically active and mineral substances from plant or other raw materials. The task is to increase the efficiency of the drying process. The problem is achieved in that in a spray dryer containing equipment for the preparation of a coolant, which uses atmospheric air, an exhaust air purification cyclone, equipment for supplying and discharging a product and an automatic control system, the equipment for preparing a coolant is made in the form of an inlet and outlet pipes, inside of which, along the air passage, a filter block and heat electric heaters are installed, while the outlet pipe of the duct about the tangent is connected to the drying chamber, made in the form of a cylinder with a conical bottom having a pipeline connecting the drying chamber to a cyclone provided with a container for the product, and the drying chamber is connected to the container for the initial product by a pipeline with a peristaltic pump. 1p.p. f-s, ill.

Description

The utility model relates to pharmaceutical, food, chemical and other related industries and can be used to dry aqueous or other solutions of various substances to obtain dry extracts of biologically active and mineral substances from plant or other raw materials.

Known spray dryer containing equipment for the preparation of a coolant, which is used as atmospheric air, an exhaust air purification cyclone, equipment for supplying and discharging a product and an automatic control system (see catalog "Dryers and Installations", published by TSINTIHIMNEFTEMASH, Moscow, 1992 city, p. 54).

The described dryer has a low drying process efficiency.

The task is to increase the efficiency of the drying process.

This object is achieved in that in a spray dryer containing equipment for preparing a heat carrier, which uses atmospheric air, an exhaust air purification cyclone, equipment for supplying a product discharge and an automatic control system, the equipment for preparing a heat carrier is made in the form of an inlet and outlet duct nozzles, inside of which, along the air passage, a filter unit and heat electric heaters are installed, while the outlet duct of the duct tangentially connected to the drying chamber, made in the form of a cylinder with a conical bottom having a pipeline connecting the drying chamber to a cyclone provided with a container for the product, and the drying chamber is connected to the container for the initial product by a pipeline with a peristaltic pump.

The inventive device is characterized by the presence of the following significant distinguishing features:

a) equipment for the preparation of the coolant is made in the form of an air duct with inlet and outlet nozzles;

b) inside the duct along the air passage, a filter unit and heat electric heaters are installed;

c) the outlet pipe of the duct is tangentially connected to the drying chamber;

g) the drying chamber is made in the form of a cylinder with a conical bottom;

d) the bottom of the dryer is connected by a pipeline to the cyclone;

e) the cyclone is equipped with a container for the product;

g) the drying chamber is connected to a container for the initial product;

h) the connection according to p. "g" is carried out by a pipeline in which a peristaltic pump is installed.

Conducted research on patent and scientific and technical literature made it possible to conclude that the claimed device meets the eligibility criteria of utility models. The industrial use of the dryer has shown its efficiency.

The essence of the claimed is illustrated by drawings, where:

figure 1 shows a General view of the spray dryer on the left side in ¾ view;

figure 2 is the same on the right side;

figure 3 - equipment for the preparation of the coolant;

figure 4 - General view of the cyclone;

5 is a cyclone, a top view;

6 is a cone with a turbulator.

The spray dryer contains equipment for preparing the coolant (atmospheric air) in the form of an air duct 1 with inlet 2 and outlet 3 nozzles. Inside the duct 1 along the air passage, a filter unit 4 and heat electric heaters 5 are installed.

The outlet pipe 3 of the duct 1 is tangentially connected to the drying chamber 6, made in the form of a cylinder 7 with a conical bottom 8 having a pipe 9 connecting the drying chamber 6 with a cyclone 10 having an underwater 11 and outlet 12 fittings. The outlet fitting 12 is connected to exhaust ventilation (not shown in the drawing). The cyclone 10 itself is made in the form of a cylindrical body 13 with a conical bottom 14, to which a container 15 for the product is connected. The cyclone 10 is installed in the frame 16. The drying chamber 6 by the pipeline (not shown in the drawing), in which the peristaltic pump 17 is installed, is connected to the reservoir 18 for the initial product - an aqueous solution. All the equipment of the dryer is mounted on a flyover 19, equipped with a ladder 20 and a number of platforms: technological 21, maintenance 22, etc. On the flyover 19, a frame 23 is fixed for the control cabinet 24. In the upper part of the drying chamber 6, there is a nozzle 25 located in the cone 26 for its orientation and a turbulator 27, and in the cylindrical part (cylinder 7) there is an observation window 28.

Spray dryer operates as follows. An aqueous solution of the starting product is poured into the container 18. The exhaust fan is turned on (not shown in the drawing) and atmospheric air begins to circulate along the path: inlet pipe 2 - filter block 4 where it is cleaned, - heaters 2 where it heats up, - outlet pipe 3, - drying chamber 6, - pipeline 9, - cyclone 10, - outlet fitting 12, - exhaust ventilation. After warming up the equipment of the dryer with hot air, they include a peristaltic pump 17, which feeds the initial product to the pneumatic nozzle 25 and to the turbulator 27. The resulting aerosol enters the hot air stream. The initial product is dried, which falls down along the conical bottom 8 into the pipeline 9, where it is caught by the air stream through the underwater fitting 11 and enters the working chamber of the cyclone 10, forming an external rotating dust-air mixture stream. Solid particles are thrown to the walls of the working chamber and on them fall down and along

the conical bottom 14 is poured into the container 15 for the product. The purified air (internal flow) rises up, located near the axis of the cyclone 10, and is removed by exhaust ventilation. The drying process can be observed through the viewing window 28.

Claims (1)

A spray dryer containing equipment for the preparation of a heat carrier, which uses atmospheric air, an exhaust air purification cyclone, equipment for supplying and discharging a product, and an automatic control system, characterized in that the equipment for preparing a heat carrier (air) is made in the form of an air duct with an inlet and outlet pipes, inside which, along the air passage, a filter block and heat electric heaters (TENs) are installed, while the outlet pipe of the duct along tion is connected to the drying chamber, made in the form of a cylinder with a conical bottom having a conduit connecting the drying chamber with a cyclone provided with a container for the product and the drying chamber is connected with a container for starting material conduit with a peristaltic pump.