Calcium Aluminate

In this paper, a new technological process Bayer Process-Calcium Aluminate cement is presented.

种分母液沉铝时还可以得到较高的碳碱苛化率(25％-60％)和较好的溶液净化效果(SiO2含量降低80％以上,Ns含量降低20％以上)。

Study on Application of Red Mud Wash Liquor Causticization Technology;

赤泥洗液苛化技术应用研究

The process waste of making PVC-carbide slag,its main composition is Ca(OH) 2,can replaces the lime for causticization on the theoretics.

生产聚氯乙烯的厂家有大量废弃物——电石渣,其主要成分为Ca(OH)2,将电石渣用于碱回收苛化,试验,结果表明是完全可行的。

Causticization was adopted to regenerate spent caustic from ethylene plant, wherein the conversion rate of sodium carbonate was over 80 % and the causticization rate of the equilibrium solution was over 90 %.

采用苛化法对乙烯裂解废碱液进行处理,Na2CO3的苛化转化率在80%以上(平衡反应液的苛化率在90%以上);废碱液的反复再生和利用对碱液的吸收性能没有显著影响,再生碱液可以满足吸收裂解气中CO2等酸性气的要求。

A new technology for producing PCC directly in the causticizing stage is reported in this paper.

介绍了一种苛化工段直接生产沉淀碳酸钙的新技术。

This paper introduces the designs of hardware and software of the control system of causticizing station.

介绍了苛化工段控制系统的软硬件设计,并针对传统PID不能在线实时调整PID参数的缺点,利用BP网络与PID相结合,完成了在线实时调整PID参数,使控制系统处于一种最优工作状态。

The excess lime optimum control and optimal parameters of causticizing process can be realized after remove the effect of 120 mins delay time.

提出了将绿液的浓度、温度、流量以及消化器温度和理论上所需氧化钙量5个参数综合成为一个参数——消化因子的新概念,并以消化因子为被控量进行闭环控制;建立了过量灰与消化因子等参数关系的推断数学模型;克服了120min大纯延迟时间的影响;实现了过量灰最佳值控制和苛化过程参数优化。

DCS control and lime charging improvement in caustic process;

苛化工段DCS控制及石灰加入量的串级控制