Abstract: The present application relates to a method for producing a laminate comprised of alternating smooth and corrugated sheets and which are to form a corrugated structure for the manufacture of contactors, characterized by that a first starting material is impregnated with a solution comprising water glass and additive whereas the additive is present at a high level and which is later corrugated and that a second starting material is impregnated with a solution comprising water glass and additive whereas the additive is present at a moderate level and that the both starting materials are brought together after the corrugation of the first starting material whereby the adhesion is maintained at a high level. The present application also relates to a laminate obtainable by said method and a contactor manufactured from a laminate obtainable by said method.

Abstract: A method for stabilizing silica gel wherein after the gel is precipitated it is treated in a solution consisting of a liquid which is preferably water, aluminium sulphate and a compound such as a carbonate, hydroxide or oxide of a divalent metal.

Abstract: A method for treating a contact body for the exchange of heat or moisture comprises impregnating a contact body with waterglass and treating the impregnated body in acidic and basic environments to form a controlled pore structure.

Abstract: A method for producing a laminate structure from smooth and corrugated webs which may be used to form a corrugated or cellular contactor for the exchange of heat, moisture, and the like. The paper webs are saturated with a concentrated waterglass solution and partially dried. A first web is then corrugated after which the first and second webs are pressed together to form a laminate structure which is subsequently dried.

Abstract: Method and apparatus for regeneration of a stationary exchanger body in which a useful gas is caused to pass from an inlet (16) to an outlet (16), the useful gas being dehydrated in the exchanger body. The exchanger body has a moisture absorbing ability and is regenerated by means of a regenerating gas which is caused to pass through the exchanger body alternately with the useful gas. During the regeneration of the exchanger body a regenerating gas is introduced into the exchanger body through both the inlet and the outlet and removed from the interior of the body via a space, which communicates between the interior of the body and a separate outlet, through which the regenerating gas is sucked out from the space.

Abstract: A method and device for the drying of gas whereof a main flow (14) is passed through a drying zone of a regenerative moisture exchanger having a body (10) containing a bed of absorbent material. The bed is regenerated in a regenerating zone (26b, 26c) wherein a regenerant gas (18), heated outside said body, is passed through the bed counter-current to the main flow (14). After passing through the bed of the moisture exchanger (10) the regenerant gas is recirculated, without passing back through the bed, and is caused, after further heating (34) to pass through the bed via at least one further regenerating zone (26a, 26b).

Abstract: Device for a contactor (10) for liquid and gas, e.g. for use in cooling towers and the like, such contactor being built up of mutually spaced membranes (12, 14) forming ducts for the passage of a fluid introduced at the top of the contactor and collected in a trough or channels below the membranes. In order to be able to collect the liquid passing through the contactor immediately beneath the lower surface of the latter, thereby reducing the pumping height without appreciably affecting the flow conditions of the air passing through the contactor, the contactor (10) is provided with surfaces to carry of the liquid which are inclined at an angle relative to the horizontal and are connected to at least one collecting channel or trough (16), these surfaces serving to carry the liquid passing out of the contactor into the collecting channel (FIG. 1).

Abstract: A supply device for use in an evaporative contact body of the multi-layer type having gaps between the layers of the body to which water is supplied from above comprises water supply pipes having outlet openings formed therein. The pipes are in direct contact with the top of the contact body or may be embedded therein, and the pipe openings are located to direct water jets directly inside the gaps between the layers of the contact body.