Put forward the suitable scopes of two different treatment ways through process flow sheet simulation.
通过流程模拟，提出两种处理方式的适用范围。
The process flow sheet of vacuum distillation of Bi-Ag-Zn crust was drawn up, and its rationality was argued.
拟定了真空蒸馏铋银锌壳制取粗银、粗铋和粗锌的工艺流程，并论证了该流程的合理性。
The process flow sheet, technological Characteristics and usage of UTI urea process are briefly introduced. Its superiority is described in this paper.
简单介绍了UTI工艺的流程、技术特点及应用情况，并指出它是一种较为先进的尿素生产工艺。
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