High-temperature material vertical cooler and waste heat using system

Abstract

The invention relates to a high-temperature material vertical cooler and a waste heat using system. The high-temperature material vertical cooler comprises a cylindrical machine body supported by a support, the lower portion of the machine body is a cold air input section, the middle portion of the machine body is a cooling section, and the upper portion of the machine body is a material input section. In the cooling section, materials are cooled by means of combination of air draft and air blowing, heat of the high-temperature materials is obtained by cooling air and a cooling pipe by means of heat conduction and conversion, and preheating is conducted on circulating water through a water cooling wall; the high-temperature cooling air is used for overheating steam generated by the vertical cooler and after the temperature of the cooling air is decreased, the cooling air is led to preheat sintering raw materials in a sintering machine; after air heated by a condenser is mixed with the cold air and the air is led to a central funnel cap; steam generated by the vertical cooler is led to a turbine to drive an electric generator to generate power after passing through a steam super-heater; water output by the condenser and a steam pocket is led to a deoxidizing machine for deoxidization and then is led to a water cooling wall so that circulation can be achieved. The high-temperature material vertical cooler is compact in structure, capable of greatly reducing air leakage of a system, guaranteeing the quality of the materials and effectively recycling the waste heat of the high-temperature materials in a stepped mode.

Description

technical field [0001] The invention belongs to the technical field of heat energy utilization, and relates to a vertical cooler and a waste heat utilization system, in particular to a vertical cooler for high-temperature materials and a waste heat utilization system. Background technique [0002] Iron and steel enterprises are an industry with high energy consumption and high pollution. In 2010, the energy consumption of the sintering / pelletizing process accounted for about 18% of the total energy consumption of iron and steel enterprises, which is the second largest energy consumption process after ironmaking. In the sintering process, about 50% of the heat energy is taken away by the sintering flue gas and cooling waste gas. Among them, the waste heat of the flue gas in the sintering process accounts for 13%-23% of the energy consumption of the sintering process, and the waste heat of the exhaust gas in the cooling process accounts for 19%-35% of the energy consumption o...

AI Technical Summary

Problems solved by technology

However, due to the limitations of its structure and cooling mechanism, the grate cooler has a high cost, a large floor space, a large amount of maintenance, a high air leakage rate, and a large power consumption. , the cooling air with low temperature (generally below 300°C) is directly emptied after dust removal treatment, thus causing a large waste of sensible heat resources of materials

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