Blast furnace gas analyzer control system based on datamation control

CN119464602APending Publication Date: 2025-02-18GUANGXI HUARUI STEEL ENG DESIGN CONSULTING CO LTD
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Patent Information

Application Number
CN202411615928.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

During the switching of the double probe, there is nitrogen retention in the blast furnace gas analyzer, which will affect the analysis data for a long time; after the probe is switched, the sampling device cools down and condenses, and the dripping of condensate water causes the first-level gas pressure extraction device to be blocked; the backblowing system lacks pressure comparison for pressure The difference is back-blowing, and the ash in the surface area of ​​the filter element and the ash accumulation in the sampling pipe wall cannot be effectively cleaned; exhaust gas emission and drainage measures do not consider that gas leakage endangers personnel safety; carrier gas transportation relies on point inspection to replace gas cylinders, and the degree of automation is low.

Method used

Design a blast furnace gas analyzer control system based on data control, combining pressure sensors and electromagnetics through components such as semi-pure gas pipelines, chromatography analyzers, carrier gas cylinders, steam main pipes, nitrogen packs, waste gas storage boxes and wastewater storage boxes. Components such as valves, pulse purge valves, etc. realize automated process execution, adjustment of valve operations, and information alarm analysis, with a high degree of automation.

Benefits of technology

It realizes automatic data analysis of blast furnace gas analyzer, cleans the ash accumulation of sample gas pipelines and pressure extraction device online, reduces maintenance, improves safety and reliability, ensures data accuracy, and solves gas leakage and untimely replacement of carrier gas cylinders. question.

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Abstract

The invention discloses a blast furnace gas analyzer control system based on datamation control, which belongs to the technical field of blast furnace gas analyzers and comprises a semi-clean gas pipeline, a chromatographic analyzer, a 1 # carrier gas bottle, a 2 # carrier gas bottle, a steam header pipe, a nitrogen bag, a waste water storage tank and a waste gas storage tank. The semi-clean gas pipeline is conveyed to the chromatographic analyzer through two sample gas conveying lines, the carrier gas bottle is used for providing a carrier gas function, the steam header pipe is used for steam cleaning, and the nitrogen bag is used for nitrogen back-blowing cleaning. The blast furnace top pressure, the steam pressure and temperature, the nitrogen pressure, the waste gas storage tank pressure, the waste water storage tank pressure and liquid level and the pressure after secondary filtration are utilized to build a blast furnace gas analyzer datamation analysis library, automatic process execution, corresponding valve operation adjustment and information alarm analysis are achieved, and the automation degree is high. The problems that an existing blast furnace gas analyzer is prone to data inaccuracy, blockage and gas leakage, and a carrier gas bottle is not replaced in time are solved.
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