Fuzzy mode identification-based blast furnace hot-blast stove energy consumption state multi-dimension assessment method

Abstract

The present invention discloses a fuzzy mode identification-based blast furnace hot-blast stove energy consumption state multi-dimension assessment method. The method comprises the steps of (1) acquiring the hot-blast stove operation data in a steel enterprise energy management and control system, and calculating the energy consumption indexes of three dimensions; (2) obtaining an energy consumption index target value and an energy consumption index threshold value according to the historical data statistical analysis; (3) obtaining an energy consumption assessment index and the energy consumption assessment characteristic vectors of multiple dimensions; (4) circularly executing the steps (1), (2) and (3), and obtaining the typical energy consumption assessment characteristic vectors to form a complete state sample set; (5) clustering and classifying the sample set by a fuzzy C-means (FCM) clustering algorithm; (6) acquiring the to-be-assessed operation data of the blast furnace hot-blast stove to obtain a to-be-assessed energy consumption assessment index, adopting an evidence theory-based fuzzy mode identification method to match the characteristic vectors of the energy consumption assessment index with a symptom set in the step (5), thereby obtaining a final assessment result of the energy consumption state of the hot-blast stove.

Description

technical field [0001] The invention relates to a multi-dimensional evaluation method of energy consumption state, belongs to the field of metallurgy, and in particular relates to the energy consumption evaluation of blast furnace hot blast stove systems in iron and steel enterprises. Background technique [0002] The blast furnace hot blast stove system is the blast equipment of the blast furnace in the iron and steel plant. Its main function is to continuously provide high-temperature hot air above 1000 degrees for the blast furnace. The temperature and amount of hot air directly affect the iron output of the blast furnace. Modern blast furnaces mostly use regenerative hot blast stoves. The working principle is to burn gas first, heat the checker bricks in the regenerator with the generated flue gas, and then heat the cold air through the hot checker bricks, and then turn the hot blast stoves alternately. Combustion and air supply make the blast furnace continuously obtain...

AI Technical Summary

Problems solved by technology

However, there are some difficulties in the calculation of the efficiency of the hot blast stove (1) lack of a gas calorific value instrument, which cannot accurately measure the gas calorific value

(2) Lack of combustion air measurement, the sensible heat brought in by the combustion air cannot be calculated

(3) Heat dissipation loss and smoke exhaust loss can only be estimated

In view of this, the calculation of the efficiency of the hot blast stove is complicated, inaccurate, and carried out offline, which has certain guiding significance for the energy consumption evaluation of the hot blast stove, but it is obviously not comprehensive enough

[0004] In addition to the efficiency of the hot blast stove, the traditional energy consumption evaluation also includes the total gas consumption of the hot blast stove, the unit gas consumption, etc., but they are all evaluated by a single indicator

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