Method for preparing ammonia and hydrogen chloride from ammonium chloride
AssigneeChemische Werke Huls Aktiengesellschaft
InventorsAlfred Coenen, Kurt Kosswig, Dieter Balzer
Life of this patent
Estimating the term…
Abstract
According to the present invention, ammonia and hydrogen chloride are prepared from ammonium chloride. The steps of the process include: 1. heating a mixture consisting essentially of (a) ammonium chloride, (b) a water-insoluble amine, and (c) an organic solvent; 2. evacuating the ammonia released thereby; 3. removing the polar solvent and any water remaining in the sump to the extent possible and/or required; and 4. heating the residue containing a non-polar and/or a weakly polar solvent and removing the hydrogen chloride.
Claims7
In a method for preparing ammonia and hydrogen chloride from ammonium chloride, the improvement comprising:
- (a) at a temperature of about 40.degree. to 250.degree. C. heating a mixture consisting essentially of
- (1) about 3 to 20% by weight ammonium chloride,
- (2) about 5 to 70% by weight water-insoluble amine, and
- (3) about 5 to 70% by weight organic solvent said organic solvent comprising a mixture of polar and non-polar solvents;
- (b) evacuating the ammonia released from step (a);
- (c) removing polar solvent from (a);
- and
- (d) heating at a temperature of about 100.degree. to 250.degree. C. the residue of (c) containing non-polar and weakly polar solvents and removing the hydrogen chloride.
Dependencies are inferred from the claim text.