Device for continuously preparing low dew point low temperature drying air

Abstract

The invention relates to a device for continuously preparing low-temperature dry air with low dew point, mainly comprising the parts as follows: an initial effect air filter, an induced device, a first-level surface refrigerant cooler, a turning wheel dehumidifier, a first-level cryogenic refrigerant cooler, a second-level cryogenic refrigerant cooler and a box body. An end part of the box body is provided with a gas inlet, a tail part of the box body is provided with a gas outlet, the inside of the box body is orderly provided with the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler from the end part to the tail part; and the initial effect air filter, the induced device, the first-level surface refrigerant cooler, the turning wheel dehumidifier, the first-level cryogenic refrigerant cooler and the second-level cryogenic refrigerant cooler are orderly connected in series through an air flue. The turning wheel dehumidifier of the device consists of a turning wheel and an air regeneration device; and the device can continuously prepare dry air with absolute water content 0.0003g / kg and the dew point between 80 and 90 DEG C below zero.

Description

technical field [0001] The utility model relates to a preparation device for low-dew-point low-temperature dry air suitable for pharmacy, food, biochemical products, etc. that require low-temperature and low-humidity air to quickly freeze and maintain the quality of articles, in particular to a continuous preparation device for low-dew point low-temperature dry air. Background technique [0002] At present, the main method used in the technical field of preparing low dew point and low temperature dry air is to directly use liquid nitrogen or liquid carbon dioxide, and use the above two low temperature fluids to obtain it. However, when liquid nitrogen or liquid carbon dioxide is directly used, the temperature of the gas is difficult to keep constant, and at the same time, because they cannot be recycled, the resources of the above two fluids are wasted, which greatly increases the cost of the unit of use. If the above-mentioned fluid is used for cold exchange to obtain low-t...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of high production cost, inability to effectively obtain low-temperature and low-dew-point gas, and difficulty in maintaining the temperature of the prepared gas in the prior art, the utility model provides a low-dew-point low-temperature drying with simple operation, continuous operation, and controllable final gas temperature. Air continuous preparation device

Images