替代燃料在埃塞俄比亚水泥部门的使用：机遇、挑战和解决办法（英文版）_48页-21mb

Summary of "Use of Alternative Fuels in the Cement Sector in Ethiopia: Opportunities, Challenges and Solutions"

Core Content

This report assesses the potential for using alternative fuels (AF) in Ethiopia's cement sector, focusing on the integration of waste management systems and the economic and technical feasibility of fuel substitution. The study was conducted by the International Finance Corporation (IFC), in collaboration with the Korea Green Growth Partnership, between August 2016 and March 2017. It aims to identify opportunities for AF utilization, analyze barriers, and propose solutions to enhance private sector participation in the cement and waste management sectors.

Main Points

1. Background and Objectives

• Ethiopia, along with other Sub-Saharan African (SSA) countries, is experiencing rapid urbanization, which is driving demand for construction materials, especially cement.
• The cement sector in Ethiopia is highly energy-intensive, with thermal energy accounting for 40% of production costs.
• The objective is to assess the technical and economic potential of AF in key cement production clusters, identify barriers to implementation, and propose solutions to support the use of AF.

2. Approach and Methodology

• The assessment includes:
  • Evaluation of the technical potential for AF based on available waste quantities.
  • Analysis of waste management practices, regulatory frameworks, and stakeholder engagement.
  • Estimation of sourcing costs under different scenarios, including the cost of collection, transportation, processing, and delivery.
  • Evaluation of economic feasibility, including capital expenditure (CAPEX) and cost differentials between AF and traditional fuels.
• The study draws on data from market stakeholders, the World Bank, and interviews with 15 key stakeholders, including cement producers, environmental authorities, and waste management operators.

3. Use of Alternative Fuels: Drivers and Global Practices

• Cement production is energy-intensive, with energy costs representing about 60% of total production costs.
• AF can significantly reduce thermal fuel costs, with global cement producers achieving substitution rates between 10-30%, and some reaching 100%.
• Major AF sources include:
  • Municipal Solid Waste (MSW) and Refuse-Derived Fuel (RDF)
  • Wood Biomass and Agricultural Residue
  • Sewage Sludge
  • Waste Tires and Tire-Derived Fuel (TDF)
• In the EU and US, AF substitution rates are higher, indicating Ethiopia's potential for improvement.

4. Cement Sector in Ethiopia: Overview and Energy Demand Forecast

• Ethiopia is one of the countries with significant cement demand in SSA, with over two-thirds of cement production located in the Addis Ababa metropolitan area.
• The sector is growing rapidly, with an estimated 7% compound annual growth rate (CAGR) since 2010.
• Waste generation is also high, with Addis Ababa producing over a million metric tons annually.
• The government has recognized the need for waste-to-energy solutions, especially after the tragic Koshe landfill landslide.

5. Technical Potential for Alternative Fuels

• The main AF sources in Ethiopia are:
  • Municipal Solid Waste (MSW): High potential for RDF production.
  • Wood Biomass and Agricultural Residue: Already used by some producers, especially sesame husks.
  • Sewage Sludge: Limited availability, with infrastructure for bulk production only planned for the next 3-5 years.
  • Waste Tires: Significant potential, especially with the use of TDF.
• Prosopis juliflora (PJ), an invasive species in the Afar region, offers a large fuel potential but requires careful management due to risks associated with its sourcing.
• The report highlights that AF can be used in cement kilns with appropriate modifications, and that biomass, RDF, and TDF have the highest thermal energy potential.

6. Waste Management and Alternative Fuels: Policies, Practices, and Barriers

• Ethiopia's waste management system is underdeveloped, with poor infrastructure for collection and transportation.
• Municipal companies dominate the sector, while private participation is limited.
• Lack of incentives for private sector involvement in waste recovery projects hampers the development of AF infrastructure.
• Community engagement is also a challenge, especially for new disposal site projects in Addis Ababa.

7. Economic Potential for Alternative Fuels

• The total investment required for AF substitution is estimated at up to $40 million.
• This includes:
  • $20 million for cement kiln upgrades (around $5 million for each of the four companies in the Addis Ababa cluster).
  • $10 million for establishing a Material Recovery Facility (MRF) to produce RDF and TDF.
  • $10 million for a PJ processing facility.
• The payback period for these investments is estimated at 3-4 years.
• The cost of coal in Ethiopia is around $6.2/GJ, and AF must be sourced at a lower cost to be economically viable.

8. Key Recommendations

• Establish a waste quantity measurement and metering system to enable payment for waste management services based on volumes processed.
• Develop a Private-Public Partnership (PPP) framework and a system of incentives to encourage private sector participation in waste recovery.
• Improve the technical capacity and awareness of municipal waste operators and government agencies.
• Implement mechanisms such as Extended Producer Responsibility (EPR) to ensure that the cost of waste is covered by polluters, including through the cost of goods.
• Encourage the development of infrastructure for MSW, sewage sludge, and tire collection and processing to support AF substitution.

Key Information

• Alternative Fuels (AF): Include MSW, RDF, TDF, sewage sludge, agricultural residue, and other commercial or industrial waste.
• Technical Potential: Biomass, RDF, and TDF have the highest thermal energy potential.
• Challenges: Poor waste collection and transport infrastructure, lack of incentives for private sector involvement, and limited sewage sludge availability.
• Opportunities: High potential for AF use in the Addis Ababa area, especially from MSW, agricultural residue, and PJ.
• Economic Feasibility: AF substitution can be economically viable with appropriate infrastructure and pricing mechanisms.
• Government Role: Recognizes the need for waste-to-energy solutions and has initiated efforts to address the issue.
• Private Sector Involvement: Critical for the development of AF infrastructure and to ensure sustainable and scalable solutions.

Conclusion

The report emphasizes the importance of developing an integrated solid waste management (SWM) system to support the use of AF in Ethiopia's cement sector. It outlines the potential for AF substitution, identifies key barriers, and proposes actionable solutions to create an enabling environment for private sector investment and sustainable development.