Residual heat comprehensive utilization method for carbon calciner

Abstract

The invention discloses a method for comprehensively utilizing the surplus heat of a carbon element calcining furnace. In the method, the high temperature smoke gas generated by eight layers of flame paths of the calcining furnace and the high temperature smoke gas generated by first layer surplus fugitive constituent introducing combustion are blended into an integrated surplus heat boiler to generate saturated vapor, the saturated vapor is sent back to a superheated vapor generator at the position of the high temperature smoke gas at the exit of the calcining furnace, so as to form the superheated vapor used for electricity generation and heat supply. 1 calcining furnace and 2 calcining furnace are arranged symmetrically, a high temperature smoke gas collection area is arranged between the 1 calcining furnace and 2 calcining furnace, the front end of the high temperature smoke gas collection area is connected and provided with a high temperature superheated vapor device, and the upper end of the high temperature superheated vapor device is equipped with a superheated vapor outlet. A desuperheater is arranged in front of the high temperature superheated vapor device, and a low temperature superheater is arranged in front of the desuperheater. A saturated vapor generator is connected and arranged in front of the low temperature superheater, and a coal economizer and a draught fan are connected and arranged in front of the saturated vapor generator. The invention has the advantages of reasonable structure, good adjustability and obvious energy saving effect.

Description

Technical field: [0001] The invention relates to a technology for comprehensive utilization of waste heat, in particular to a method for comprehensive utilization of waste heat of a carbon calciner. Background technique: [0002] At present, in the production of the carbon industry, tank-type calcination furnaces are widely used for calcination process equipment, and thermal coal furnaces are generally used to absorb and utilize the 1000-1100 ℃ high-temperature flue gas generated by it to solve the problems in the carbon production process. heat energy required. However, since carbon production requires less heat energy, the exhaust gas temperature of thermal coal furnaces is as high as 500°C or higher, resulting in serious energy waste, which is not in line with the current energy-saving and emission-reduction policies advocated by the state. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a me...

AI Technical Summary

Problems solved by technology

However, due to less heat energy required for carbon production, the exhaust gas temperature of thermal coal furnaces is as high as 500°C or higher, resulting in serious energy waste, which does not comply with the current energy-saving and emission-reduction policies advocated by the state.

Images