摘要
以稻草(或麦杆)为原料,用硫酸作催化剂,分别添加过磷酸钙、重钙和复合添加剂,常压水解,温度110℃-140℃,添加剂与原料比1:2-1:3(W/W),液固比3:1-4:1(W/W),水解时间2-3h,出醛率较一般硫酸法高3%-4%(以干稻草计),渣pH≈7,有效磷和钾的含量均达到复合磷钾肥标准.
The results showed that the waste settlings is almost neutral and contains effective phosphorus and potassium, which are all satisfied to the quality standard for the complex fertilizer in fur fural formation from straw of rice (or straw of wheat ), and the yield of furfural exceeded 9% (as ahs dry raw meterial) by the addition of the materials under the conditions of hydrolysis which showed as following:the temperature 110℃ 140'C, the ratio of the additions to straw: 1: 2 -1: 3 by weight,the ratio of the liquid to the solid:3:1--4:1 by weight,time of hydrolysis:2--3 h,and 1 atm.
出处
《环境科学》
CAS
CSSCI
CSCD
北大核心
1996年第3期41-43,共3页
Environmental Science
基金
湖南省科委技术发展项目
关键词
改良硫酸法
糠醛生产
废渣
复合磷钾肥
modification of sulfuric acid catalysis,production of furfural,conversion of waste settlings,complex fertilizer containing phosphate and potassium.