Device and method to prevent loss of filter sand upon backflushing of iron-manganese removal tank for HyCO process

• Main Authors: QIAN HAILING, CAO SHENG, XU JING, SU KEFENG, GAO SONG, XIE HUIYUN, SHEN WEI, XIANG WUDING, ZHONG HUA, LI XIANMIN
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2019
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a device and method to prevent loss of filter sand upon backflushing of an iron-manganese removal tank for HyCO process. The device comprises an iron-manganese removal tank filled with iron-manganese removal filter sand; the top of the iron-manganese removal tank is provided with a feed port, and the bottom thereof is provided with a discharge port; the feed port is connected with an inflow pipe and an intake pipe; the inflow pipe and the intake pipe join close to the feed port to form a feed port end pipeline which is provided with a feeding control valve; the discharge port is connected with an outflow pipe and a liquid discharge pipe; the outflow pipe and the liquid discharge pipe join close to the discharge port to form a discharge port end pipeline; a backflushing water supply pipe connected to the discharge port end pipeline is guided from the inflow pipe; the discharge port end pipeline is provided with a backflushing inflow valve; the feed port is alsoconnected with an exhaust