A waste incineration waste heat coordinated supercritical CO2 cycle power generation system

By integrating slag cooling, flue gas waste heat recovery, and leachate treatment units with a supercritical ORC cycle system, the system achieves multi-form synergistic recovery and cascade utilization of waste incineration waste heat, solving the problems of low waste heat recovery rate and high leachate treatment cost, and improving the efficiency and economy of waste incineration power generation.

CN122190857APending Publication Date: 2026-06-12CHONGQING SANFENG ENVIRONMENTAL IND GRP CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING SANFENG ENVIRONMENTAL IND GRP CORP LTD
Filing Date
2026-05-08
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

In existing waste-to-energy incineration systems, the waste heat recovery rate is low, the waste heat utilization of slag is insufficient, the leachate treatment cost is high, and a single-cycle system is difficult to adapt to the cascade utilization of waste heat of different grades, resulting in limited overall power generation efficiency.

⚗Method used

By combining a slag cooling system, a flue gas waste heat recovery device, a leachate waste heat treatment unit, a supercritical circulation system, and an ORC circulation system, the synergistic recovery and cascade utilization of multi-form waste heat are achieved. Through technologies such as a spiral buried pipe + fluidized bed composite cooling system, a dust removal pretreatment section, a flash evaporation device, and a heat pump system, the waste heat recovery efficiency is improved and the leachate treatment cost is reduced.

🎯Benefits of technology

It significantly improves power generation efficiency to 38%, waste heat recovery rate to 90%, reduces leachate treatment costs by 60%, and improves system economics by 25%-30%, making it suitable for various types of waste incineration plants.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to waste incineration energy recovery technical field, disclose a kind of waste incineration waste heat synergic supercritical cycle power generation system, comprising: slag cooling system, flue gas waste heat recovery device, leachate waste heat treatment unit, supercritical cycle system, ORC cycle system and slag heavy metal solidification module;Slag cooling system's feed inlet is connected waste incinerator slag outlet, discharge port connects slag heavy metal solidification module feed end;Flue gas waste heat recovery device flue gas inlet is connected waste incinerator flue gas outlet, outlet connects flue gas purification system;Leachate waste heat treatment unit feed inlet is connected waste incinerator leachate collection end;Supercritical cycle system and ORC cycle system are connected in series;The present application solves the problem that the waste heat recovery rate is low in the prior art, slag waste heat recovery mode is single, processing cost is high, single power generation cycle system is difficult to adapt to the cascade utilization of different grade waste heat.
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