A new type of through-flow plus static bed classification drying system

Abstract

The invention relates to a novel flow crossing and static bed classified drying system which comprises a rotary kiln dryer and a static bed. The rotary kiln dryer is provided with a rotary kiln rotor drum, one end of the rotary kiln rotor drum is connected with a colloidal particle feed pipeline, the other end of the rotary kiln rotor drum is provided with a flow crossing discharging port, a rotary vibration sieve is arranged below the flow crossing discharging port, the rotary vibration sieve is connected with a static bed inlet pipeline, a flow crossing lifting board is transversely arranged inside the rotary kiln rotor drum, a Roots blower is arranged on the bottom of the rotary kiln dryer, the Roots blower is connected with the static bed through the static bed inlet pipeline, multiple static bed air ducts are formed in the top of the static bed, an air flow distribution plate is arranged on the bottom inside the static bed, multiple overflow weirs are vertically arranged on the air flow distribution plate, multiple wind chamber ports are formed in the lower portion of the static bed, and the wind chamber ports are connected with the air flow distribution plate. The static bed is operated in a totally-enclosed mode in production, labor intensity is lowered greatly, the whole production process is controlled automatically and operated continuously, operation is simple, material transferring is fast, productivity is improved manyfold, the production life is longer, and the novel flow crossing and static bed classified drying system is especially suitable for drying of polyacrylamide with large viscosity.

Description

technical field [0001] The invention belongs to the field of polyacrylamide drying equipment, and in particular relates to a novel through-flow plus static bed graded drying system. Background technique [0002] The main application fields of polyacrylamide in my country are petroleum exploration, water treatment, papermaking, superabsorbent resin, metallurgy and coal washing. With the development of the above-mentioned industries, the demand for polyacrylamide is increasing. In order to better store and transport products, it is necessary to convert polyacrylamide colloids into powder particles. It is necessary to use a dryer to remove a large amount of water in the colloid. Several common dryers include vibrating fluidized bed dryers, belt dryers, through-flow rotary kiln dryers, and static fluidized bed dryers. The simple through-flow rotary kiln drying process, due to the low dehydration strength of this equipment and the long residence time of the rubber particles, wil...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that polyacrylamide particles with a certain viscosity are prone to agglomeration in existing drying equipment, the purpose of the present invention is to provide a new type of through-flow plus static bed classification drying system, so that the particles with a certain viscosity are in the through-flow Dispersed in the rotary kiln dryer, and then screened and blown to the static bed by the Roots blower to continue drying to meet the requirements

Images