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    Steam and Water



Waste-to-Energy

As we continue to completely decarbonise electricity generation, Waste-to-Energy (WTE) has proven to be a safe, efficient, and greener way of producing power. Although there are concerns about the emissions from burning, Waste-to-Energy actually produces far less CO2 than a coal plant and tackles our long-term problems with landfills. These produce toxins and greenhouse gas emissions which are left out in the open air. WTE reduces greenhouse gases and plays an important part in the reduction of methane from landfills, not just offsetting emissions from fossil fuel production but also recovering ferrous metals for recycling.

A Growing Market

waste to energy plantBy 2027, the Waste-to-Energy market is expected to be valued at 50.1 billion U.S. dollars and it is anticipated to continue growing from there. Following the COP26 Conference, green is where the new money is. Subsidies, originally for fossil fuel industries, are being curtailed and the financial focus is on renewable energies.

Waste-to-Energy simply put is where waste is burnt at high temperatures, this is used to heat water within an industrial boiler, the steam created is then used to turn turbines to create electricity for power. This birds eye view sounds simple enough but like most industrial processes detailed planning is needed to ensure the integrity of the process, the safety of staff and the community.

A number of pre-incineration processes, such as the removal of ferrous metals, to go for recycling, has reduced the amount of pollutants emitted but has made the economic viability of this process more questionable. New incinerators have therefore, been created to meet the stricter regulations on pollution allowing for the continued growth of this industry. Improved process methodologies and newer technologies are allowing for further development of this energy option helping to achieve economic viability.

This industry has had significant growth in Europe, with China and Japan becoming increasingly interested in developing this form of energy. Increasing government funding for municipal solid waste management along with growing awareness regarding waste to energy plants across various economies such as India, Singapore, Indonesia, and Thailand are expected to push the regional market growth.

There are over 400 waste energy facilities within Europe, another 300 are across the globe. The United States currently has 86 facilities, divided mainly between New York and Florida, but is looking to rapidly expand as the rising industrial and domestic waste is prompting regional governments to promote energy generation from waste. Within Europe, Germany, the UK and Italy are the most proactive when it comes to WTE. There are currently about 100 waste incineration plants in Germany alone with a work force of 6,000 and total annual capacity of about 20 million tons. The UK and Northern Italy are looking to expand further.

Waste Reduction Ratio

It is calculated that for every ton of solid waste there is a saving of one-ton reduction in greenhouse gases. This is the finding of the US Environmental Protection Agency in 2020. As such they are looking deeper into this form of energy production and are making several suggested recommendations to ensure economic viability and genuine green credentials.  The Department of Energy made the following recommendation in August 2019 and this has been implemented in most of the facilities across the world.

“• Reduce operating costs and increase revenues in existing incinerator facilities. These opportunities include advanced emissions control strategies to lower costs associated with environmental compliance, development of novel corrosion-resistant materials to reduce maintenance costs, and advanced separations to recover valuable materials from ash.”*

* extracted from the Office of /energy Efficiency Renewable Energy Report August 2019.

Continued Development

Continual development of the process such as the removal of ferrous metals demonstrates the fluidity of the WTE process. As technology progresses adjustments can be made to improve the levels of efficiency within the plant, and in the production of energy via steam.

Like most new technologies there is continual development focussed on making this method of energy production both financially and environmentally viable. We will be watching the developments and working with interested parties to assist in the growth and development of this energy source.

To run a Waste-to-Energy plant you need process instrumentation which can make you feel confident in the safety and reliability of your plant, which is where Hydrastep comes in.

Hydrastep, has been designed specifically by Delta Mobrey to monitor boiler levels, irrespective of industry in the simplest and most reliable manner making it a great option for all Waste-to-Energy companies looking to maximise the smooth operation of their facilities. Giving confidence in knowing their water tube boilers are protected from low water levels as Hydrastep gives a continuous feedback on the levels of water and steam contained within the boiler itself.

Hydrastep’s reliability is a great alternative to sight glass in the monitoring of steam and boiler and was recommended in the CEA’s latest guidance on the safe operations of Water Tube Boilers. This document BG11 provides designers and operators with a better understanding of water tube boiler systems, specifically how to maintain a boiler system safely and efficiently as well as being environmentally friendly.

To learn more about Hydrastep click here to discover more…

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