Module 1: Fuels characterization and energy balance
  Lecture 6: Heat balance in Coke oven and clean Development Mechanism
 

In dry quenching, inert gas is used to capture the heat. The technology of dry quenching has essentially two components.

  • Capture of sensible heat of coke if gas is flowing counter- current to coke
  • Use of heated gas to produce superheated steam in a boiler.
  • Integrations of use of super heat with e.q. to run a boiler

Figure 6.2: Technology to recover sensible heat in coke

 
Source Coke dry quenching http://www.Jase.w.eccj.orjp/technologies/pdf/iron-steel/5-7.

In the dry quenching red-hot coke is fed to the chamber and while it descends through the chamber, is cooled with circulating gas blown from the bottom of the chamber. After it has cooled to 200oC, the coke is ejected from the bottom. The heated circulating gas is then used to produce high-temperature and high-pressure steam in the boiler. After cleaning the gas by a dust collector the gas is sent back to the chamber for recycling.