| 摘要 |
<p>PROBLEM TO BE SOLVED: To recover low-grade and unutilized waste heat, provide an effective energy having the objective form, quality and quantity, convert the resultant energy into the one for providing a high efficiency and a high utilization ratio and recycle and utilize the energy in the own process by utilizing a cascade. SOLUTION: This method for recovering waste heat comprises heating clean warm water 14 heated by the contact heat exchange between polluted warm water 3a from which heat is recovered and clean water 13a is further heated with waste gas 15 after combustion in a coke oven 1 in a gas-liquid heat exchanger 16 to afford hot water 16a in direct heat recovery from a by-product gas 2 with a liquid coolant 3 in the waste heat of the coke oven 1.</p> |
