用饱和蒸汽加热的，须增加鼓壁的厚度和重量。
Heated with saturated steam, to increase the drum wall thickness and weight.
循环槽有一不锈钢槽、蒸汽加热管道、过滤器、液位控制器和喷淋用的泵等。
The circulation tank has a stainless steel tank, stream heating pipeline, filters, liquid level controller and pump for rinsing etc.
用蒸汽在机械化澄清槽底部间接加热，使沉积于底部的重质焦油软化，减少刮板阻力。
Apply steam to heat the flushing-liquor decanter indirectly to soften the heavy tar depositing on the bottom of tank to decrease the drag of chain scraper.
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