Online monitoring device and online monitoring method for boiling degree of blast-furnace gas boiler economizer

Abstract

The invention discloses an online monitoring device and an online monitoring method for the boiling degree of a blast-furnace gas boiler economizer. The online monitoring device comprises a data acquisition unit and a data processing unit, wherein a unit distributed control system is used for acquiring he running data of a blast-furnace gas boiler, and the boiler economizer in a high-temperature section and a low-temperature section, and storing the running date in a real-time database server and a mirror image database server; a calculation server is used for reading the running data from the mirror image database server, carrying out calculation processing to obtain a calculation result of the boiling degree of the boiler economizer in the high-temperature section, and storing the calculation result in the mirror image database server; a WEB publishing server is used for publishing the calculation result to a user display terminal; the user display terminal can look up the value of the boiling degree of the boiler economizer in the high-temperature section, and carry out boiler running on the basis to control the boiling degree of the boiler economizer in the high-temperature section, thus the boiler economizer in the high-temperature section is in a safe state, so as to guarantee the safe and stable running of the gas boiler, and prolong the service life of the blast-furnace gas boiler economizer.

Description

technical field [0001] The invention relates to the boiler technology field of thermal energy engineering, in particular to an online monitoring device for the boiling degree of an economizer of a blast furnace gas boiler and a monitoring method based on the monitoring device. Background technique [0002] Iron and steel enterprises produce a large amount of by-product gas during the smelting process, including blast furnace gas, converter gas and coke oven gas. Among them, blast furnace gas is produced in the ironmaking process, and its quantity is the largest among the three types of gas. However, due to the high nitrogen content of blast furnace gas, low calorific value and poor combustion stability, many iron and steel plants do not fully utilize blast furnace gas, and a large amount of blast furnace gas is directly released, resulting in a huge waste of energy. How to make good use of the precious blast furnace gas resources has always been a common concern of relevant...

AI Technical Summary

Problems solved by technology

However, from a theoretical point of view, in order to accurately realize the on-line monitoring of the economizer boiling degree, not only the inlet temperature of the economizer flue gas side, the outlet temperature of the economizer flue gas side, the boiler feed water flow rate, etc., must be measured in real time by conventional boilers Not all boilers will be measured online, but the actual situation is that most iron and steel plants are not equipped with real-time detection analyzers for furnace gas and economizers. On-line analyzer for flue gas composition

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