用国产仪表实现干吸工序自动控制

Automatic Control for Drying-Absorption Section by Using Domestic Instruments

井陉磷肥厂在南化公司研究院的协助下,应用国产仪表实现了干吸工序的自动调节。控制的主要对象为93％酸浓、98％酸浓及浓酸循环槽液位。文中对调节方案的确定,参数的整定及自动调节的经济效益和存在的一些问题,作了简要叙述。

Jingjing Phosphate Fertilizer Plant has realized the automatic regulation in drying--absorption section using domestic instruments with the help of Research Institute of Nanjing Chemical Industry Company. Both sulphuric acid concentration and liquid level of pump tanks are controlled automatically. The scheme, the adjustment of parameters, the economic benefits and some problems existing in the automatic control system are briefly discussed.