Method for detecting oil content in gas in continuous annealing furnace on line

Abstract

The invention relates to a method for detecting oil content in gas in a continuous annealing furnace. The method comprises the following steps of: extracting out furnace gas from sampling points of all furnace sections and leading the extracted gas into a shared sampled gas cooler (2); then respectively leading the gas into a system for detecting the oil content in the gas in the continuous annealing furnace on line respectively through two independent gas distributors (3) for diagnosing, and leading the gas into a system for realizing the automatic and continuous cleanness detection of various sampling points to judge whether various furnace areas have harmful substances or not through the detection and the analysis of the system to the ingredients of the furnace gas; converging the furnace gas sampled and detected by the systems at a joint point f, and sending the furnace gas back to a furnace chamber through a shared return gas drier (16); and accurately, timely and overall judgingthe running state of the furnace through comparing the ingredients and the quantity of organic matters and carbohydrates. The invention can be used for timely and accurately knowing gas pollution conditions in the furnace and oil leakage conditions of equipment in the furnace so as to provide a possibility for observing the change of pollutants in the furnace in a production process transition process.

Description

technical field [0001] The invention relates to the technical field of heat treatment of cold-rolled metal strips, in particular to a detection method for online detection of oil content in gas in a continuous annealing furnace, which is used in the production fields of medium and high-end automobiles and home appliance panels. Background technique [0002] With the increasing demand for high surface quality products in the automobile and home appliance industries, the requirements for product surface quality are becoming more and more stringent, which promotes the development of new technologies for continuous galvanizing and continuous annealing production lines. However, the continuous annealing furnace as the core equipment is subject to high temperature, Affected by factors such as airtightness, some key issues that restrict the improvement of product quality have not been broken through. The detection of the cleanliness of the gas in the furnace under the production sta...

AI Technical Summary

Problems solved by technology

Harmful substances remaining in the furnace not only pose a threat and affect the product quality, but also cause damage to the equipment in the furnace

[0004] At present, there is no recognized judgment method for the quantity and degree of harm of such hazardous substances at home and abroad, let alone mature detection methods and devices

In production, the furnace can only judge according to the existing instrument indication and experience, which greatly increases the difficulty of operation and the probability of misjudgment

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