Complex composition resulting from the action of urea on a sulfuric sludge of petroleum origin, process for the preparation thereof and use thereof as a source of fertilizing material

摘要

A complex composition formed by the product resulting from the action of urea on a sludge of petroleum origin containing by weight from 50 to 99% of sulfuric acid and from 1 to 20% of organic residues. The acid sludge may contain water and often comes from an alkylation reaction. This composition can be used as a source of fertilizing material or as a component of a fertilizing formulation.