Liquid purification or separation – Processes – Chemical treatment
Patent
1989-04-20
1991-04-30
Miller, Edward A.
Liquid purification or separation
Processes
Chemical treatment
149 88, 149101, 149124, 210774, 210903, 210908, C02F 172, C06B 2100
Patent
active
050116142
ABSTRACT:
A process for effecting thermal decomposition of explosive nitric acid esters in wastewater effluents of the explosives industry wherein no additional by-products are produced and wherein the danger of explosions is avoided. In this process, the dissolved esters are exposed to a temperature of between 150.degree. and 300.degree. C. under pressure lying above the boiling pressure of the wastewater. During this step, the nitric acid esters are completely decomposed, and the wastewater treated in this way can then be passed on to further processing and purification. In a preferred embodiment, the hot wastewater exiting from a decomposer unit is exploited for preheating the effluent before it enters the decomposer unit.
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Frisch Heinz
Gresser Wilhelm
Kaschel Klaus
Reinecke Berent
Schelhase Klaus
Dynamit Nobel AG
Miller Edward A.
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