Process and apparatus for recycling aqueous fluid absorbents fin

Details Process and apparatus for recycling aqueous fluid absorbents fin Process and apparatus for recycling aqueous fluid absorbents fin

1989-09-15

1991-11-12

Thiesen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264118, 264141, 521 405, 521 45, 521 455, 528499, 528502, C08J 1106

Patent

active

050645820

ABSTRACT:
A process for recycling and reblending dry, difficult to hydrate polymer fines into a water-swellable fluid absorbent polymer gel is disclosed. The process requires feeding the dry polymer fines into a first mixing zone where they are subjected to spraying with water that at least partially hydrates the fines and mixing, substantially simultaneously with the water contact, at high shear such at the fines are substantial completely hydrated without agglomeration. The hydrated fines are then transported from the first zone into a second mixing zone where blending of the hydrated fines with fresh polymer gel occurs at medium shear such that a substantially uniformly blended product results. The resulting process successfully re-introduces fines into the main product stream wherein the resulting product has high aqueous fluid absorbent capacity and good particulate mechanical integrity.

REFERENCES:
patent: 4950692 (1990-08-01), Lewis et al.

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