High-temperature high-dust content high-corrosion waste heat boiler of metallurgical industry

Abstract

The invention discloses a high-temperature high-dust content high-corrosion waste heat boiler of metallurgical industry. A high-temperature platen superheater and a low-temperature platen superheater are arranged in a cooling room I and a cooling room II respectively; a convection evaporation tube platen I, a convection evaporation tube platen II and a convection evaporation tube platen III are arranged in a cooling room III, a cooling room IV and a cooling room V respectively; platen heating surfaces are longitudinally arranged in the cooling rooms; a high-temperature radiation settling room and each cooling room are formed by membrane walls and communicated in a staggered manner; an ash bucket is arranged at the lower part of each heating surface; the collected dust is conveyed out of the boiler by a slag extractor. The high-dust content high-temperature flue gas generated in a metallurgical production process sequentially enters the high-temperature radiation settling room, multi-level cooling rooms and an economizer to realize heat energy recovery of a convection bank; the superheated steam generated by the waste heat boiler is applied to enterprise production. The waste heat boiler disclosed by the invention has the advantages of simple production technology, convenience in maintenance and safe and stable operation and is suitable for popularization and application in the waste heat recovery of high-dust content high-temperature flue gas in the metallurgical and chemical industries.

Description

technical field [0001] The invention belongs to a new technology for high-efficiency utilization of waste heat in the field of energy conservation and environmental protection in the metallurgical industry, and specifically relates to a high-temperature, high-dust, high-corrosion waste heat boiler in the metallurgical industry. Background technique [0002] With the increasing shortage of primary energy in the world, rising energy prices have become a new challenge for metallurgical enterprises. At present, my country proposes to develop towards an energy-saving and environment-friendly society, and energy conservation and consumption reduction should be a long-term strategic task for metallurgical enterprises. In recent years, my country's energy consumption has increased year by year, becoming the second largest energy consumer after the United States, of which industrial energy consumption has exceeded 70% of the total consumption, and environmental pollution, resource an...

AI Technical Summary

Problems solved by technology

The invention provides a waste heat boiler adapting to the characteristics of high temperature, high dust content and high corrosiveness in the metallurgical industry, comprehensively considering the characteristics of high temperature, high dust content and high corrosive flue gas in the metallurgical industry and their commonality, and solving many traditional waste heat boilers in the metallurgical industry technical flaws

Images