Production of oxalic acid from sugar beet molasses by mixed nitric acid and sulphuric acid

被引：0

作者：

Guru, M ^{[1
]}

Pamuk, V

Bilgesu, AY

机构：

[1] Gazi Univ, Dept Chem Engn, Ankara, Turkey

[2] Ankara Univ, Dept Chem Engn, TR-06100 Ankara, Turkey

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2002年 / 36卷 / 1-2期

关键词：

oxalic acid; molasses;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A nitric acid oxidation process was developed to produce oxalic acid from sugar beet molasses. The important parameters affecting the yields were found to be air flow rate, temperature, the amount of V2O5 catalyst and the concentrations of molasses. H2SO4 and HNO3. A maximum yield of 76.0% was obtained. The nitrogen oxides (NO.) released were absorbed in concentrated sulphuric acid and reused in the following reactors giving, under similar conditions. slightly lower yields. Thus it was possible to reduce-nitric acid consumption and to prevent air pollution. Meanwhile, it. was possible to reduce the unit cost of raw material for oxalic acid production. A maximum 74.9% of theoretical yield was obtained by Using the absorption solution and filtrate.

引用

页码：81 / 91

页数：11

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