Blast furnace cooling system transformation method

Abstract

The invention relates to a blast furnace cooling system transformation method. The method comprises the following steps: 1) a blast furnace lower section cooling system is designed; 2) a furnace cylinder and a furnace bottom cooling wall water supply / drainage pipe network are connected to form the blast furnace lower section cooling system; 3) a furnace bosh, a furnace waist and a furnace body cooling wall water supply / drainage pipe network are connected to form a blast furnace upper section cooling system; and 4) an upper section water supply / drainage main pipe of the blast furnace upper section cooling system is connected with a lower section water supply / drainage main pipe of the blast furnace lower section cooling system; and when one cooling system is broken down to be incapable of satisfying the use requirements, the other cooling system replenishes cooling water into the system or replaces to finish the cooling operation. The method can finish transformation of a blast furnace cooling system under the condition of not influencing normal production of a blast furnace, realizes segmented cooling below the furnace cylinder and above the furnace bosh, satisfies actual requirements of adjusting the cooling water quantity at different parts and controlling the thermal load at all the parts in the operation of the blast furnace, guarantees continuous production of the blast furnace, and prolongs the whole service life of the blast furnace.

Description

technical field [0001] The invention relates to the technical field of ironmaking blast furnace cooling, in particular to a method for transforming a blast furnace cooling system. Background technique [0002] Compared with other ironmaking methods, blast furnace ironmaking has incomparable advantages such as large output, high productivity and low cost, so the blast furnace ironmaking process is generally used in ironmaking at present. It is obvious that only by prolonging the life of the blast furnace can the purpose of saving costs and increasing productivity be achieved. Practice has proved that the longevity of the blast furnace must be grasped from the design. The existing conventional blast furnace cooling design generally adopts the "constant flow" cooling method, that is, the amount of cooling water obtained by each cooling element in each part of the blast furnace is equal, and the furnace body cooling system of this type of blast furnace usually uses a string to ...

AI Technical Summary

Problems solved by technology

In the currently used tandem blast furnace cooling system, if a certain section of cooling equipment suddenly leaks, it will cause large fluctuations in the water supply of the entire cooling system; In the actual situation where the heat load in the above areas is large and the fluctuations are large, the current cooling system adopts a unified cooling method, and it is impossible to adjust the cooling intensity locally

Images