Method for treating rifampicin n-butanol mother liquor still residue

Abstract

The invention relates to a method for processing residual liquid in a rifampicin n-butyl alcohol mother liquid distillation still. The invention has the technical key points that the method comprises the following steps of: 1, adding n-butyl alcohol waste liquid, of which volume is four fifths of the volume of a reaction kettle, into the reaction kettle and simultaneously, starting a turbine mixer and a paddle agitator to carry out stirring at a rotating speed of 80 to 100r / min and heating mixture solution in the reaction kettle to 40 to 60 DEG C; 2, adding n-butyl alcohol residual liquid, of which the volume is one tenth of the volume of the reaction kettle, into the reaction kettle with stirring and after stirring for 45min to 60min, filling all mixture solution in the reaction kettle into a centrifuge; 3, leading the centrifuged mixture solution into a waste liquid storage tank after centrifuging for 20 to 30min, pumping the mixture solution into a n-butyl alcohol waste liquid pipeline or a distillation system pipeline by a circulating pump when three fifths to four fifths of the volume of the waste liquid storage tank is full filled with the mixture solution, and recovering, weighing and bagging centrifuged dry substances. The method fundamentally solves the problems of excessive waste liquid, difficulty in treatment of waste slags and the like of an existing n-butyl alcohol mother liquor distillation still in the residual liquid treatment process.

Description

technical field [0001] The invention relates to the technical field of hazardous waste disposal pretreatment, in particular to a pretreatment method for n-butanol rough distillation still residue, in particular to a method for treating rifampicin n-butanol mother liquor still residue. Background technique [0002] In the production process of rifampicin, when the n-butanol mother liquor is distilled and recovered, a still residue will be produced, which is a black viscous substance, most of which are organic matter and a small amount of residual n-butanol, if stacked in the open air, exposed to the sun and rain , Air and microbes will corrupt and produce serious stench, seriously affecting the surrounding environment. According to the national environmental protection law, it belongs to hazardous waste, and it is forbidden to stack it in the open air, and it should be treated in a harmless manner. The existing n-butanol mother liquor still residue treatment method mainly ha...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for the treatment of rifampicin n-butanol mother liquor still residue, which fundamentally solves the problems of excessive waste liquid and difficult disposal of waste residue in the existing n-butanol mother liquor still residue treatment process

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