Flue gas waste heat recycling system

Abstract

The invention provides a flue gas waste heat recycling system. The flue gas waste heat recycling system comprises a firing kiln, a green body drying kiln, a desulfurizing tower and a spray tower drying furnace. High-temperature flue gas exhausted by the firing kiln is subjected to waste heat conduction through the first heat exchanger and is used as combustion-supporting air for fuel combustion of the spray tower drying furnace, so that the initial temperature and the internal energy of the combustion-supporting air are improved, the fuel in the spray tower drying furnace is more prone to combustion, and the combustion-supporting air volume and the fuel needed for generating the same heat and the same flue gas temperature are reduced; meanwhile, flue gas waste heat is conducted through the first heat exchanger and can also be used as air for drying the ceramic green bodies in the green body drying furnace, so that fuel consumed when the ceramic green bodies are dried is reduced; in addition, the flue gas in the middle of the firing process of the firing kiln is introduced into the second heat exchanger, heat guided out by the first heat exchanger is insufficient to supplement green body drying heat, the second heat exchanger can be used as the first heat exchanger for standby application, and the purposes of saving energy, reducing carbon emission and improving enterprise benefits can be achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a system for reusing flue gas waste heat. Background technique [0002] Ceramics is a general term for pottery and porcelain, and it is also a kind of arts and crafts in my country. As far back as the Neolithic Age, there were painted pottery and black pottery with rough and simple styles in our country. Pottery and porcelain have different textures and different properties. [0003] The energy consumption of the ceramic production industry is relatively large, and it is one of the fourteen key industries that my country is currently focusing on promoting transformation and upgrading and comprehensively carrying out energy conservation and emission reduction supervision. At present, in the process of ceramic production, due to the needs of ceramic firing, the temperature of the flue gas from the firing kiln is very high. The heat cannot be used effectively, res...

AI Technical Summary

Problems solved by technology

At present, in the process of ceramic production, due to the needs of ceramic firing, the exhaust gas temperature of the firing kiln is very high. The high-temperature flue gas is directly discharged to the atmosphere through the chimney after being sprayed and cooled in the desulfurization process of the desulfurization tower. The heat has not been effectively used, resulting in a huge waste of energy

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