Water-cooled, high-temperature gasifier and method for its operation
    1.
    发明授权
    Water-cooled, high-temperature gasifier and method for its operation 失效
    水冷式高温气化炉及其运行方法

    公开(公告)号:US4098324A

    公开(公告)日:1978-07-04

    申请号:US746400

    申请日:1976-12-01

    Abstract: A system for cooling high-temperature gasifiers and method for its operation wherein cooling conduits extend vertically through the walls of the gasifier and are connected at their ends to a closed-water circulation system which incorporates heat exchangers for removing heat from the system. Boiling in the system is prevented, and good heat transfer characteristics are achieved, by maintaining a high pressure system, at least 40 bar, coupled with a flow velocity of between 5 and 7 meters per second at a maximum internal diameter of the cooling conduits of 51 millimeters. Means are provided for maintaining the temperature of the water exiting from the cooling conduits at least 10.degree. C below the boiling point at the pressure and flow rate of the system.The cooling tubes in the walls of the gasifier are covered by a ramming compound of refractory material held in place by expanded metal or mesh which curves around each tube but is spaced therefrom and welded to webs interconnecting the tubes in a gas-tight wall. The expanded metal supports the ramming compound but at the same time does not come into direct contact with the tube walls and thus eliminates points of maximum thermal loading where boiling might occur.

    Abstract translation: 一种用于冷却高温气化器的系统及其操作方法,其中冷却管道垂直延伸穿过气化器的壁并且在其端部连接到闭合水循环系统,所述闭合水循环系统包括用于从系统移除热量的热交换器。 通过保持至少40巴的高压系统与每秒钟5至7米之间的流速相连,在该冷却管道的最大内径处,可以防止系统中的沸腾,并实现良好的传热特性 51毫米。 提供的装置用于在系统的压力和流速下将从冷却导管排出的水的温度保持在沸点以下至少10℃。

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