The lines are coupled by pipelines, each having a valve, installed after the solid liquid separation step for sending a liquid from the solid liquid separation step to the neutralization step in each line and after the sulfurization step for sending {TAIL ~ a liquid} from the sulfurization step to the detoxification step in {HEAD ~ each line} 
The lines are coupled by pipelines , each having a valve , installed after the solid liquid separation step for sending a liquid from the solid liquid separation step to the neutralization step in each line and after the sulfurization step for sending { TAIL ~ a liquid } from the sulfurization step to the detoxification step in { HEAD ~ each line }
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