An environmental protection treatment process for waste gas emission in steelmaking plants

Abstract

The invention relates to an environment-friendly treatment process for steel mill waste gas emission. A steel mill waste gas emission environment-friendly treatment device is used in the invention. The environment-friendly treatment device for steel mill waste gas emission comprises a filtering mechanism and a liquefying mechanism, the right end of the filtering mechanism is connected with a liquefying mechanism; the lower end of the liquefaction mechanism is mounted on the existing working ground; the design concept of a filtering-cleaning integrated structure is adopted for environment-friendly treatment of steel mill waste gas emission; the initial end and the tail end of the waste gas flowing path are each provided with a structure with a filtering function so that waste gas can be subjected to multi-stage filtering and impurity adsorption treatment, meanwhile, a plurality of cleaning structures are arranged so that the structures with impurities attached to the surface area can beremoved, and the situation that operation between the structures is affected due to the fact that too many impurities are accumulated in the device is reduced.

Description

technical field [0001] The invention relates to the technical field of factory waste gas treatment, in particular to an environmentally friendly treatment process for waste gas discharge from steelworks. Background technique [0002] Steelworks are heavy industry, secondary industry, manufacturing, capital-intensive industries, fixed assets, factory types, and raw materials for steelworks are iron ore, coal, charcoal, etc., which are supplied by the mining industry. Since the steelmaking plant is the production of strategic materials, most countries are state-owned enterprises. Its main task is to desulfurize, dephosphorize, decarburize and deoxidize the molten iron, and then cast the molten steel into billets. Steelmaking refers to the use of pig iron to put Smelt in the steelmaking furnace according to a certain process, control the carbon content (generally less than 2%), eliminate harmful elements such as P, S, O, and N, retain or increase beneficial elements such as Si,...

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Problems solved by technology

[0003] 1. In the waste gas treatment method, it is usually considered to filter and adsorb the impurities in the waste gas. In this process, the external power drive structure is basically used, and the utilization of the heat energy of the waste gas itself is often ignored. At the same time, the waste gas contains The forms of impurities are different, and a relatively simple filter structure is commonly used, so that the degree of filtration and adsorption of impurities in the exhaust gas is low;

[0004] 2. Part of the impurities entrained by the exhaust gas will accumulate on the inside of the channel and the filter structures contained in the channel. The accumulated impurities will form a thicker impurity layer after a long time, and the impurity layer is easy to operate and filter between structures. The filtering effect of the structure is affected, and the common exhaust gas channel adopts an integrated structure, which is not conducive to cleaning the channel regularly

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