| 摘要 |
<p>The present invention features a coke drum de-heading system that provides the de-heading of a coke drum without having to physically remove the head units. This is accomplished using one of a variety of de-header valves that may be removably coupled to a coke drum much the same way a conventional head or flange unit would be attached. The de-header valve (300) is equipped with, among other things, a valve closure (320) and a support for a valve closure capable of forming a continuous contact seal during the coke manufacturing process. A support for the de-header valve typically comprises a seat support system comprising a variety of designs. Actuation of the valve closure functions to open and close the de-header valve (300), wherein in a closed position, the de-header valve and coke drum are prepared to receive the petroleum by product feed from the refinery process used to manufacture coke. Once the drum is full, the de-header valve is again actuated (opened), wherein the coke that has accumulated on the blind is sheared by the seat support system, thus effectively de-heading the coke drum and facilitating the decoking process.</p> |
