High-efficiency energy-saving drying apparatus

Abstract

The invention discloses a highly-effective energy-saving drying device, wherein an upper air inlet of an air flowing pipe which is arranged in a square vacuum drying cylinder of a vacuum dryer is communicated with the convection type hot-air drier through a draught fan, and a lower air outlet thereof is communicated with an air inlet of a vapor separator, the air inlet of the convection type hot-air drier is communicated with the air outlet of a heat exchanger, the air outlet of the vapor separator is communicated with the air inlet of the heat exchanger, the water outlet of the vapor separator is communicated with a water tank, the vacuum-pumping pipe of the square vacuum drying cylinder is communicated with a vacuum-pumping device after passing through a condenser, the water inlet and the water outlet of the condenser are both communicated with the water tank, the discharge port of the convection type hot-air direr is communicated with the feeding inlet of the square vacuum drying cylinder, and the heat source inlet and outlet of the heat exchanger are communicated with a heat source. The invention has the advantages of reasonable design, low energy consumption, excellent drying effect and high heat energy utilization, and favorable economic and social benefits.

Description

1. Technical field: [0001] The invention relates to a drying device for solid particle materials, in particular to a high-efficiency and energy-saving drying device. 2. Background technology: [0002] The drying industry is a large energy consumer. According to authoritative statistics: the energy consumption of my country's drying industry accounts for 12% of the total energy consumption of GDP, so it is very urgent to reduce the energy consumption of drying equipment. Hot air convection drying equipment has high heating efficiency and equipment structure. Simple features, but its drying energy consumption is too high, and the waste heat cannot be recycled; the vacuum drying equipment has good quality of dried materials, low energy consumption, and also has the defects that the waste heat cannot be used and the manufacturing cost is high. In addition, at present, the drying of most products in my country is usually completed in a set of equipment under one drying parameter, ...

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Problems solved by technology

[0002] The drying industry is a large energy consumer. According to authoritative statistics: the energy consumption of my country's drying industry accounts for 12% of the total energy consumption of GDP, so it is very urgent to reduce the energy consumption of drying equipment. Hot air convection drying equipment has high heating efficiency and equipment structure. Simple features, but its drying energy consumption is too high, and the waste heat cannot be recycled; the vacuum drying equipment has good quality of dried materials, low energy consumption, and also has the defects that the waste heat cannot be used and the manufacturing cost is high

In addition, at present, the drying of most products in my country is usually completed in a set of equipment under one drying parameter, and from the drying kinetic characteristics of the material, it can be seen that in different drying stages of the material, the optimal drying parameter is Different, a set of drying equipment often cannot meet the requirements of the drying characteristics of materials in different drying stages. Therefore, the use of a single drying equipment and a single drying parameter will not only cause waste of energy and resources, but also affect the drying quality and output.

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