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Method for recycling waste liquor of ammonium hexanedioic acid and recycling system thereof

A recovery method, ammonium adipate technology, applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, preparation of carboxylic acid salts, etc., can solve problems such as recycling and utilization of waste electrolyte, and achieve remarkable results , The effect of simple process

Inactive Publication Date: 2008-07-16
RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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Problems solved by technology

This technology does not solve the problem of recycling the waste electrolyte formed from aluminum foil for capacitors

Method used

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  • Method for recycling waste liquor of ammonium hexanedioic acid and recycling system thereof

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Embodiment Construction

[0028] System embodiment:

[0029] As shown in Fig. 1, it is the structural representation of ammonium adipate waste liquid recovery system of the present invention. It includes the following components directly or indirectly connected to the main inlet / outlet: waste liquid tank 10, filter 11, acidifier 12 with heating device, temperature-controlled crystallizer 13, solid-liquid separator 1-14A, water washing Groove 15, solid-liquid separator 2-14B, draft drier 16, between solid-liquid separator 2-14B and temperature control crystallizer 13, also be installed with the heater 17 for recrystallization, be used for checking unqualified Carry out recrystallization and purification after the crystals are melted; there is also a pipeline T with a switching valve between the solid-liquid separator 1-14A and the suction dryer 16, which is used to directly transport the recrystallized liquid crystals obtained after recrystallization to The solid-liquid separator 1-14A performs one-tim...

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Abstract

The invention relates to a method and a system for treating and recovering adipic acid ammonium waste liquid and the recovering method comprises the following steps: A. filtering the solid impurities in the waste liquid, B. controlling the temperature of the filtered waste liquid and acidizing the filtered waste liquid, C. decreasing the temperature of the acidulated waste liquid and crystallizing the acidulated waste liquid, D. collecting adipic acid crystal after solid-liquid separation, E. washing to get the adipic acid crystal and collecting the adipic acid crystal after solid-liquid separation. The recovering method and recovering system of the invention have the following advantages: being able to acquire purified adipic acid with standard capacitance; being able to be recycled used in the industries such as an electrolytic capacitor, etc., having a simple and efficient technique and obvious economical benefit and environment protection effect.

Description

technical field [0001] The invention relates to a recovery method of organic waste liquid and its equipment system, more specifically, the invention relates to a recovery method of aluminum foil formation waste liquid and its equipment system. Background technique [0002] Electrolyte must be used in the formation process of low-voltage aluminum foil for capacitors, and the main component of low-voltage formation electrolyte is ammonium adipate. After the electrolytic solution has been used for a period of time, due to the mixing of more aluminum ions and some other impurities, the electrical properties of the produced electrolytic foil gradually fail to meet the predetermined requirements. At this time, it is necessary to prepare a new ammonium adipate solution to replace the electrolytic electrolyte. liquid for normal production. However, if the waste electrolytic waste liquid is dumped into the environmental soil and water body at will, it will cause serious environmenta...

Claims

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Application Information

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IPC IPC(8): C07C55/14C07C51/487C07C51/43
Inventor 何凤荣
Owner RUYUAN YAO AUTONOMOUS COUNTY DONGYANGGUANG FORMED FOIL CO LTD
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