Multi-cycle vertical type drying method and device

Abstract

The invention discloses a multi-cycle vertical type drying method and device. According to the method, hot gas with carbon molecular sieve raw materials enters a vertical type drying pipeline, so that when the hot gas rises in the vertical type drying pipeline, the hot gas and the carbon molecular sieve raw materials are fully mixed in a contacting mode, and the carbon molecular sieve raw materials after preliminary drying are dried again. According to the method, a plurality of sections of expanding pipes are arranged on a pipe body of the vertical type drying pipeline, the hot gas with the carbon molecular sieve raw materials enters the expanding pipes, then the flow speed of the hot gas is suddenly decreased, when the hot gas with the carbon molecular sieve raw materials flows out of the expanding pipes, the flow speed is suddenly increased, during flow speed changing, the hot gas and the carbon molecular sieve raw materials are in full contact, and accordingly the carbon molecular sieve raw materials are better dried. According to the method, a heat exchanging layer is arranged in an environment-protecting energy-saving burning device, air enters the heat exchanging layer for heat exchanging, hot gas is formed, and then the hot gas enters the vertical type drying pipeline to dry the carbon molecular sieve raw materials.

Description

technical field [0001] The invention relates to a multi-cycle vertical drying method and a device thereof, belonging to the field of carbon molecular sieve manufacturing machinery. Background technique [0002] Carbon molecular sieve is a new type of activated carbon that almost only contains uniform micropores with a diameter of several angstroms. This pore characteristic can endow nitrogen-making carbon molecular sieve with selective adsorption performance according to its pore size and the molecular size and shape of the gas to be adsorbed. Taking advantage of this feature, nitrogen-producing carbon molecular sieves are widely used in various gas separation processes. The existing carbon molecular sieve preparation method sequentially includes raw material proportioning, drying, fine crushing, pickling, secondary drying, extrusion molding, high-temperature nitrogen-based carbonization, and high-temperature nitrogen-based pore adjustment treatment. The preparation proces...

AI Technical Summary

Problems solved by technology

The preparation process of carbon molecular sieve will produce a large amount of water vapor, low melting point tar, CO, CO 2 , coal gas and other high-temperature harmful gases, direct discharge of the above-mentioned high-temperature harmful gases will cause great pollution to the environment, so the existing conventional method is to pass the high-temperature harmful gases into a combustion device for combustion, and the existing combustion devices generally include a Combustion chamber, gas incineration is carried out in the combustion chamber. The incineration process will generate a lot of heat, which is not used effectively and is released into the atmosphere in vain, resulting in a waste of energy

Images