A feeding assembly and a reaction kettle for hydroxypropyl methyl cellulose production and a method of using the same

Abstract

This invention belongs to the field of chemical production technology and discloses a feeding component and a reaction vessel for the production of hydroxypropyl methylcellulose, as well as its usage method. This invention addresses the escape problem caused by turbulent gas-solid flow during gravity feeding of ultrafine powder raw materials and the fluid dynamics challenge of difficult-to-remove boundary layer deposits within the spiral heat exchange channel, proposing solutions. The feeding component of this invention features a humidification structure on the discharge tray, utilizing an inclined jet of liquid medium to construct a dynamic liquid curtain and increase the aerodynamic diameter of the powder particles, thus suppressing turbulent diffusion at the source. A vibration structure is incorporated, with a second arc-shaped plate pushing an arc-shaped rod, and rubber balls intermittently striking the discharge tray to disrupt the static friction buildup of the powder. The reaction vessel is equipped with a cleaning structure, where a booster pump draws cooling water from the insulated water tank through a conical spiral guide plate to form a spiral rotating water flow, scouring the inner wall of the spiral condenser tube. Motor II drives the stirring shaft, which in turn drives a cam to superimpose transient pulse pressure waves in the spiral flow field, disrupting the laminar sublayer.

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