Cracking furnace with two-stroke radiation furnace tube

A radiant furnace tube and process radiation technology, which is applied in the field of ethylene cracking furnaces, can solve the problems of short operation period and achieve the effects of long operation period, good mechanical properties and large production capacity

Active Publication Date: 2007-10-31
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1-1 type (U type) two-pass furnace tube has a larger specific surface area and better mechanical properties, but the operating cycle is shorter than other two-pass furnace

Method used

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  • Cracking furnace with two-stroke radiation furnace tube
  • Cracking furnace with two-stroke radiation furnace tube
  • Cracking furnace with two-stroke radiation furnace tube

Examples

Experimental program
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Embodiment Construction

[0049] The following descriptions only represent specific embodiments of the present invention, and are only used to further illustrate the present invention, but not to limit the present invention.

[0050] Below in conjunction with accompanying drawing 9 illustrate ethylene cracking furnace of the present invention:

[0051] It includes a high-pressure gas bag 1, a convection section 2, a radiation section 3, multiple sets of radiation furnace tubes 4 vertically arranged in the radiation section, a burner 5, and a quench boiler 6; the furnace height of the radiation section is 13693mm, the width is 4150mm, and the length is 15276mm , arrange four radiant section furnace tube modules. Take 7 furnace tubes as a group, and the outlets of the two groups of furnace tubes are concentrated and arranged together. A total of 56 furnace tubes are arranged, of which the inner diameter of the first tube tube is 40-60mm, and the inner diameter of the second tube tube is 62-72mm. The fu...

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PUM

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Abstract

The invention discloses an ethylene cracking furnace of two range radiant furnace tube, which is characterized by the following: adopting special radiant furnace tube; bending the bent (10) of the first range pipe and the bent (12) of the second range pipe in two plans of F and G; possessing flexible inclination of the bent. This invention can occupy less fire box space, which can provide bigger production capability.

Description

technical field [0001] The invention relates to an ethylene cracking furnace with two-pass radiation furnace tubes. Background technique [0002] In the ethylene plant, the cracking furnace is the core equipment. The design of the radiant furnace tube is the key to determine the cracking selectivity, improve the yield of cracked olefins and improve the adaptability to different cracking raw materials. Improving the structure and arrangement of radiant coils has become the core part of the development of tubular cracking furnace technology. For more than 20 years, there have been radiant furnace tubes with different structures such as single-row branch reducer tubes, mixed-row branch reducer tubes, non-branch reducer tubes, and single-pass equal-diameter tubes. [0003] The arrangement of the furnace tubes has developed from the initial single row to double rows. For a single row, the same capacity requires a larger footprint. The advantage is that the circumferential tempe...

Claims

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Application Information

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IPC IPC(8): C07C11/04C07C4/02
Inventor 何细藕陈硕李金科张兆斌邵晨巴海鹏孙向军张永刚李昌力刘敬坤郭玉萍陈永亮李光
Owner CHINA PETROLEUM & CHEM CORP
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