METHOD OF NEUTRALISING INDUSTRIAL WASTES OF CELLULOSE NITRATES Russian patent published in 2014 - IPC C02F11/00 B09B3/00 C02F103/28 

FIELD: chemistry.

SUBSTANCE: invention relates to the neutralisation of explosive and inflammable wastes of cellulose nitrates and can be used in the chemical industry. The method includes collection of sewage waters, containing cellulose nitrates, extraction of the cellulose nitrates from them and their further neutralisation. The neutralisation of wastes of the cellulose nitrates is carried out directly in a sludge-collector or a settling pond by processing of a deposit of the cellulose nitrates preliminarily buried under a multilayered drainage ground with slaked lime, placed in the form of a reagent layer above the deposit level. Additional buffer sand drainage layers, not less than 0.4 m thick, are placed between the deposit and the reagent layer and above it. The upper buffer sand layer after the formation is moistened with water, and the ground located above it represents alternately placed layers of ground, sand and fertile soil, with each layer being not thinner than 0.5 m.

EFFECT: invention makes it possible to simplify the method of neutralising industrial wastes of cellulose nitrates, to ensure environmental and technological safety of the process.

6 cl, 1 dwg, 3 tbl