级联过程理论研究与~(13)C浓缩

THEORETICAL STUDY OF CASCADE PROCESS AND ENRICHMENT OF ~(13)C

摘要: 建造了—座2-7型不锈钢试验——生产装置,以天然CO_2为原料,采用CO_2-二正丁胺-三乙胺化学交换法浓缩高浓~(13)C;建立了多级梯型级联过程数学模型,关联了过程分离系数α、原利浓度xf、各塔流量L、塔径D、塔高H、填料当量直径D′_c等变量与应变量产率P、产品浓度xp之间的函数关系。该级联装置在产率为100g~(13)C/a出料过程中(150d)~(13)CO_2产品中~(13)C浓度保持在93％以上,最高达99.288％。
- 化学交换 /
- 多级梯型级联 /
- ~(13)CO_2
Abstract: A pilot plant of Type 2-7 stainless steel cascade enriching highly concentrated ~(13)C using CO_2-di-n-butylamine-triethylamine chemical exchange system was set up; The mathematical model of the multistage trapezoid cascade was established, which describes the function relation among separation factor a, concentration of raw material x_i, flow of each column L, diameter of column D, height of column H, equivalent diameter ofpacking D_e, productive rate of cascade P and concentration of products x_p The cascade was run, and the concentrative rate of the cascade was sped up and the separative capacity of the cascade was fully developed. The concentrationof ~(13)CO_2-products remained more than 93 atom % and up to 99.288 atom % during 150 days of drawing-off of products at 100g ~(13)C/a.

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