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Coke drum bottom unheading system and method

A technology of coke drum and skirt, which is applied to the door/closure of coke oven, heating of coke oven, coke oven, etc., can solve the problems of expensive, complicated machinery, insufficient clamping force and so on

Inactive Publication Date: 2007-09-05
柏克德碳氢技术解决方案公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But these and other existing head removal systems are mechanically complex and / or very expensive (eg, $1 million per coke drum)
Furthermore, the semi-manual systems known to be commercially available today provide insufficient clamping force for reliably maintaining the gasket load around the perimeter at all times between the end cap and the coke drum

Method used

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  • Coke drum bottom unheading system and method
  • Coke drum bottom unheading system and method
  • Coke drum bottom unheading system and method

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Embodiment Construction

[0021] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the same reference numerals are used for the same or similar elements. It should be noted that the drawings are for illustration only and are not intended to be blueprints, nor are they drawn to exact scale.

[0022] As described above, embodiments of the present invention provide methods and systems for clamping bottom end caps to coke drums during head removal operations. The method and system consists of two major components: 1) the use of a plurality of individual clamps mounted around the circumference of the coke drum bottom flange; The maximum space design methodology. As used herein, required gasket load strength refers to the amount of gasket load that, for a given coke drum, can maintain an effective gasket seal in the region between the clamps such that a substantially solid, airtight and A liquid-tight seal, ie little or no ...

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PUM

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Abstract

Clamping system and method for clamping the bottom head cover of a coke drum to the bottom flange thereof are disclosed. The system and method include determining the flange stiffness or resistance to deflection resulting from the spring-like force exerted on the bottom head cover and bottom flange gasket seating surface by the gasket in its compressed state. This deflection information may then be used to estimate the minimum number of clamps needed to ensure sufficient load remains on the gasket at the midpoints between the clamps to effectively keep the gasket sealed. An appropriate number of clamps may then be disposed around the periphery of the bottom flange to clamp it to the bottom head cover. In one practical design, each clamp engages a lug attached to the periphery of the bottom head cover such that the clamp does not extend underneath the bottom head cover when clamped.

Description

technical field [0001] The present invention relates to improved systems and methods for use in the unheading of coke drums. Background technique [0002] In the hydrocarbon processing industry, there is a need to recover valuable products from the heavy residual oil remaining after refining operations are completed. This recovery process produces a by-product called coke and is known as coking. The coking process takes place in large vessels, called coke drums, which have top and bottom end caps. The bottom end cap is usually a circular steel plate, usually 6 feet in diameter, bolted to a flange at the bottom of the coke drum. Top end caps are similar, but typically 36 inches in diameter. Gaskets, such as double soft iron encapsulated non-asbestos filled gaskets, are positioned between the coke drum top and bottom flanges and top and bottom end caps to help provide an airtight seal for the coke drum. Typically, these flanges and covers are designed in accordance with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D45/00E05C1/06E05C19/06E05C3/02
CPCC10B25/10F16J13/06
Inventor B·J·多克森V·E·格林J·J·陆C·施罗德M·什尼M·T·阿里
Owner 柏克德碳氢技术解决方案公司