A production and consumption interlocking method of alumina steam

Abstract

An interlocking method of alumina steam production and consumption, which solves the lack of correlation between steam production and consumption data in each process in the existing alumina production process, resulting in a large amount of waste of steam, low coal combustion efficiency, and high production cost per ton of alumina question. The alumina steam production and consumption interlocking method, through the interlocking of steam consumption and boiler steam output in high-pressure dissolution, pre-desilication, mother liquor evaporation, desulfurization, boiler self-use, coal gasification and other process sections in the alumina production process, boiler steam production and The interlocking of raw materials and fuels, as well as the interlocking of raw materials and power plants, establishes the online production and consumption interlocking relationship of alumina production, thereby reducing the coal consumption in the boiler combustion process and the steam demand in the operation process, and reducing the Bayer process alumina Reduce the energy consumption of production and improve the automation level in the field of alumina production.

Description

technical field [0001] The invention belongs to the technical field of industrial artificial intelligence of metallurgical automation, and in particular relates to a method that can realize the online association between the steam consumption of the process section and the boiler steam output, the online association between the boiler steam production and the raw fuel, and the online association between the raw fuel and the power plant, A alumina steam production and consumption interlocking method that reduces the energy consumption of Bayer process alumina production and improves the level of industrial automation. Background technique [0002] At present, the process of industrial artificial intelligence in my country is very slow, mainly due to two reasons. First, due to the lack of accuracy of a large number of industrial basic data, the entire industry chain cannot effectively use these data for interlocking, forecasting and optimal scheduling; Second, due to the lack o...

AI Technical Summary

Problems solved by technology

There is no interlocking between the steam production at the boiler end and the steam consumption of the process. Once the steam required for the production process decreases, for example: the production adjustment decreases, the maintenance process or the failure state, the steam production end of the boiler cannot grasp the situation in time, and will continue to follow the normal The state provides steam for the consumption end, which causes a lot of waste of steam

[0004] Behind the waste of steam is the increase of the main water supply, the increase of the primary air and secondary air volume, and the increase of coal consumption. The increase of the main water supply will increase the power consumption of the main water pump, and the increase of the primary air and secondary air volume will increase Intensify the power consumption of the corresponding fan, and the increase in coal consumption directly increases the production cost per ton of alumina

In addition, there is no online relationship between the air volume inside the boiler and the coal consumption, which often leads to a mismatch between the primary air and the secondary air of the boiler, and the mismatch between the air volume of the boiler and the coal consumption, resulting in insufficient pulverized coal combustion. Reduced combustion efficiency, etc.

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