Casale Sa

Borealis Agrolinz Melamine Gmbh

Robert Schlesinger

Doris Machl

Arne Schadt

Christoph Neumüller

Herbert Gabriel

Gregor Demel

Franz Hintermüller

Andreas Spiegel

Nieves González Ramòn

Christoph NEUMÜLLER

The present invention relates to a method for recycling water in a melamine production process comprising&#x2014;a wet process comprising the steps of aqueous treatment of a melamine melt from a melamine synthesis plant with an aqueous alkali containing solution and crystallization for producing solid melamine and a triazine containing alkaline mother liquor,&#x2014;a wastewater treatment process comprising the steps of thermal treatment of said triazine containing alkaline motor liquor, and&#x2014;a recycling process, whereby at least parts of the thermally treated alkaline mother liquor are being recycled to the wet process.

Water recycling in a melamine production process

A high-pressure melamine reactor is provided. The high-pressure melamine reactor comprising at least one horizontal reactor body having a bottom and a top side with at least one dome integrally formed on the top side of the reactor body. The at least one horizontal reactor body comprises at least two compartments separated by at least one baffle, in particular an overflow baffle. The at least one dome is solely located above at least one of the compartments serving as melamine synthesis unit, wherein the at least one compartment serving as melamine synthesis unit comprises at least one heating element.

Horizontal high-pressure melamine reactor

Growing community of inventors

Linz, Austria

Robert Schlesinger