Heat exchange apparatus for effecting heat exchange in plurality of gases, heat exchange element for use in said apparatus and process for preparation of said heat exchange element

摘要

Disclosed are a heat exchange element obtained by forming a sheet material or honeycomb structure having a shape required for a heat exchange element from an organic filler-filled sheet made from an acid- resistant glass fiber, dipping the formed sheet material or honeycomb structure in a suspension of an inorganic filler, at least a part of which is composed of scaly particles, and fixing the inorganic filler applied by the dipping treatment to the sheet material or honeycomb structure by a binder, and a process for the preparation of this heat exchange element and a heat exchange apparatus comprising this heat exchange element. A high acid resistance and a high gas-intercepting property can be maintained even by using a thin and light sheet material.