| 摘要 |
Disclosed therein is a sludge drying system which dries organic sludge generated in industrial sites or domestic sewage treatment plants by mixing the sludge with heat transfer oil, thereby contributing to improvement of drying efficiency. The sludge drying system includes: a preprocessing part including a sludge supplying part, a transfer oil storage tank, a recoverable oil storage tank, and a preheating and mixing tank; a drying part including first to fourth drying parts respectively having first to fourth vacuum drying pipes, and first to fourth liquid-vapor separators and first to fourth condensers, and a controlling part having first and second vacuum drying control pipes, fifth and sixth liquid-vapor separators and fifth and sixth condensers; and a post-processing part having a feeding tank, a centrifugal oil extractor, and a dried sludge storage tank. |
| 主权项 |
1. A sludge drying system comprising:
a preprocessing part including a sludge supplying part, a transfer oil storage tank for storing transfer oil, a recoverable oil storage tank for recovering and storing transfer oil separated from the sludge, and a preheating and mixing tank; a drying part including a first drying part, a second drying part, a third drying part, a fourth drying part and a controlling part which are divided in a multi-stepwise manner, the first, second, third and fourth drying parts respectively including: first, second, third and fourth vacuum drying pipes for depressurizing the supplied sludge into a vacuum state; first, second, third and fourth liquid-vapor separators for separating moisture and gas discharged from the first, second, third and fourth vacuum drying pipes; and first, second, third and fourth condensers for condensing the separated moisture and gas, the controlling part including: first and second vacuum drying control pipes for receiving the sludge discharged from the first, second, third and fourth vacuum drying pipes and drying the received sludge in the vacuum state while stirring the sludge; fifth and sixth liquid-vapor separators for separating moisture and gas discharged from the first and second vacuum drying control pipes; and fifth and sixth condensers for condensing the separated moisture and gas; and a post-processing part including a feeding tank for collecting and supplying the sludge dried through the drying part; a centrifugal oil extractor for separating the transfer oil from the sludge supplied from the feeding tank by a centrifugal force; and a dried sludge storage tank for storing the dried sludge from which the transfer oil is separated. |
