Pyrolysis can lower the environmental impacts and improve resource utilization. A multi-stage comprehensive assessment model was developed to assess the economic feasibility of sludge pyrolysis. The indicator of gross process yield was used to evaluate the energy conversion efficiency of the different pathways. A comprehensive technoeconomic analysis was used to quantify the technical and economic performance of the pathway through uniform monetary measurement standards. Sensitivity analysis was used to determine the uncertainty and risk. The pathway with the highest gross process yield was selected to assess the feasibility using comprehensive techno-economic analysis considering different value. The estimated break even selling price of bio-oil was very close to the average crude oil of recent five years when considering economic, social, and environmental value. The main key factors affecting the economics of system were crude oil price, bio-oil lower heating value, bio-oil yield, and energy consumption of the pyrolysis process.
Bibliographical noteFunding Information:
This work was in part sup ported by the YUEQI young scholar grants plan of CUMTB, the Na tional Key Re search and De vel op ment Pro gram of China (2016YFC0801906, 2017YFC0805705), Beijing Ed u ca tion Commit tee Tech nol ogy Pro ject of China (SQKM201710016007).
- Energy conversion efficiency
- Multi-stage comprehensive assessment
- Sensitivity analysis
- Techno-economic analysis