Multi-objective optimization method of desulfurizer pre-injection in circulating fluidized bed

Abstract

The invention provides a multi-objective optimizing method of circulating fluidized bed desulfurization pre-input amount. The multi-objective optimizing method of the circulating fluidized bed desulfurization pre-input amount comprises steps as below: step 1: determining an upper limit value and a lower limit value of reactant input amount inside a woter according to fluctuation of inner pressure difference of a desulfurizing tower and on the premise of guaranteeing production to be performed smoothly; step 2: determining the objective function and constraint condition of the multi-objective optimizing mould with highest desulphurization efficiency and lowest desulphurization cost on the principle of improving utilization of material circulation and lowering input of original serious fluid; step 3: according to the objective function and the constraint condition of the multi-objective optimization of the multi-objective optimizing model, adopting linear programming simplex method to respectively solve the combination factors of the optimized slaked lime serious fluid input amount, the circulation material input amount and water spraying amount, using the combination factors for instructions on site, and achieving the purpose of guaranteeing desulfurization efficiency and lowering desulfurization cost. The multi-objective optimizing method of the circulating fluidized bed desulfurization pre-input amount has the advantages of being simple and fast to calculate, and strong in practicality, suitable for setting of instruction factors of instructing desulfurization production, capable of solving the problem that circulation materials are not sufficiently utilized during the desulfurization process, and strong in practicality, and having significant meaning for lowering cost and improving desulfurization production efficiency.

Description

technical field [0001] The technology of the invention belongs to the technical field of optimizing the production process of a circulating fluidized bed for iron and steel sintering, and relates to a multi-objective optimization method for the pre-injection amount of a desulfurizing agent in a circulating fluidized bed considering the cost of desulfurization. technical background [0002] The iron and steel industry is a pillar industry of the national economy and has always occupied a very important position in the development of the national economy. my country's crude steel output accounts for more than one-third of the world's total output, and it is the world's largest steel-producing country. However, due to the limitations of the development of traditional metallurgical production technology and the extensive production and economic growth mode that my country has continued for many years, the overall level of technology and equipment is still relatively backward, re...

AI Technical Summary

Problems solved by technology

Therefore, to control the huge SO produced in the sintering flue gas 2 Emissions have become the key to the emission reduction work of iron and steel enterprises. However, desulfurization production requires a large amount of desulfurizer slurry. Due to the lack of theoretical guidance, a large amount of desulfurizer is used due to excessive input, which makes the desulfurization reaction tend to be saturated, and a large amount of desulfurizer is wasted. The amount of unreacted circulating materials is not fully utilized, resulting in high desulfurization costs

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