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Safety Control Method for Preventing Tube Burn-through of Tube Heating Furnace

A tubular heating furnace, safety control technology, applied in the direction of furnace control devices, lighting and heating equipment, furnaces, etc., can solve problems such as poor safety, and achieve the effects of avoiding dangerous consequences, good reliability and usability, and good technical effects

Active Publication Date: 2018-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of poor safety in the prior art, and a new safety control method for preventing the burn-through of the tube heating furnace tube is provided

Method used

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  • Safety Control Method for Preventing Tube Burn-through of Tube Heating Furnace
  • Safety Control Method for Preventing Tube Burn-through of Tube Heating Furnace
  • Safety Control Method for Preventing Tube Burn-through of Tube Heating Furnace

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Embodiment 1

[0024] A safety control method for preventing burn-through of tube heating furnace tubes, such as figure 1 shown, including the following steps:

[0025] 1. Analysis of low risk of heating furnace tube flow

[0026] Using Process Hazard Analysis (PHA) or Hazard and Operability Analysis (HAZOP) methods, according to the furnace process technical regulations and pipeline and instrument flow charts, identify and analyze the causes of low furnace tube flow and the consequences of such deviations, Find out the existing protective measures and determine whether the independent protection layer (IPL) meets the risk reduction requirements, and sort out the existing or proposed additional safety instrumented function loops.

[0027] 2. Determine the SIL level of the safety instrument function

[0028] On the basis of risk analysis, the safety instrument function is identified, and the safety integrity level of the low-low interlocking circuit of the furnace tube flow is determined by...

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PUM

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Abstract

The invention relates to a safety control method for preventing furnace tubes of a tubular heating furnace from being burnt through and mainly aims at solving the problem of poor safety in the prior art. The problem is well solved by adopting the technical scheme of the safety control method for preventing the furnace tubes of the tubular heating furnace from being burnt through, which comprises the following steps: 1, analyzing the low-flow risk of the furnace tubes of the tubular heating furnace; 2, determining the SIL of a safety instrument function, identifying the safety instrument function on the basis of risk analysis, and determining the SIL of a low-flow inter-locking circuit of the furnace tubes by adopting a semi-quantitative protective layer analysis method; and 3, designing a safety inter-locking system. The safety control method can be used for the safety control of the tubular heating furnace.

Description

technical field [0001] The invention relates to a safety control method for preventing furnace tubes of a tubular heating furnace from burning through. Background technique [0002] The common heating furnace in refining and chemical production is the tubular heating furnace. For the heating furnace, the process medium is heated and vaporized at the same time, and its temperature will directly affect the operating conditions and product quality of the subsequent process. When the flow rate of the heating furnace tube is too low, the furnace tube may be damaged due to dry burning, and the material may leak into the furnace, which may cause an explosion, resulting in damage to the heating furnace and casualties. [0003] The heating furnace tube is generally equipped with a low flow alarm and a low flow interlock. However, there are two problems: one is that the security control scheme is unreasonable. The commonly used safety interlock control scheme is: install respective...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D19/00
CPCF27D19/00
Inventor 李荣强姜巍巍李传坤曹德舜
Owner CHINA PETROLEUM & CHEM CORP
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