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Valmet secures its largest waste-to-energy boiler delivery to China

Finland-headed forest industry and energy technology major Valmet Oyj has announced that it has signed a contract with Urumchi Jinghuan Environmental & Energy Co., Ltd for the delivery of two boiler plants for a greenfield waste-to-energy plant in Urumchi, China.
"This will be our largest waste-to-energy boiler delivery in China. Our waste-to-energy concept has been developed especially for power plants utilizing refuse-derived fuel," said Jussi Sinisalo, Valmet's VP Pulp & Energy, China.

Valmet has signed a contract with Urumchi Jinghuan Environmental & Energy Co., Ltd for the delivery of two boiler plants for a greenfield combined heat and power (CHP) waste-to-energy (WtE) plant in Urumchi, China. With a capacity to used 1 million tonnes of refuse-derived fuel (RDF) annually, the order is the largest of its kind in China for Valmet.

Urumchi Jinghuan Environmental & Energy Co., Ltd. specializes in generating heat and power by incinerating solid municipal waste. The company is part of Beijing Environment Co., Ltd, a China-based company principally engaged in urban and rural environmental services, waste-to-energy (WtE) and waste-to-resources (WtR), as well as the planning, engineering, financing, construction, operations and maintenance (O&M) of such projects.

Using refuse-derived fuel (RDF), the new greenfield combined heat and power (CHP) plant in Urumchi will supply electricity to the grid. Installation of the boiler is scheduled to begin in March 2019 with heat and power production to start by the end of 2019.

The boiler plant will burn one million tonnes of RDF produced from municipal solid waste (MSW) annually with natural gas will be used only for start-ups.

This will be our largest waste-to-energy boiler delivery in China. Our waste-to-energy concept has been developed especially for power plants utilizing RDF. It offers excellent reliability and lifespan through Valmet’s unique superheater design, even for demanding fuels. Utilizing waste in energy production enables significant reductions of CO2 emissions compared to fossil fuel-powered plants, said Jussi Sinisalo, Valmet’s Vice President for Pulp and Energy in China

Two CFB boilers and ancillaries

Valmet’s scope of supply for the project, the value of which has not been disclosed, includes the major parts of two CYMIC boiler islands, from fuel silo to boiler outlet. The boilers use circulating fluidized bed (CFB) technology which according to Valmet effectively control emissions and corrosion from fuels like RDF that have very high chlorine and alkaline content.

Valmet’s CYMIC boiler technology offers the most reliable solution for RDF. We expect to achieve high economic efficiency with less need for maintenance and fewer production shutdowns. At first, we didn’t believe that an RDF-fired boiler could be this large and efficient, especially for handling China’s extremely demanding municipal solid waste. But after visiting Valmet’s excellent RDF boiler reference in China, we are fully convinced. The tailor-made boiler design meets our expectations for size and parameters, and we believe it will help us to optimize the entire plant, said Wang Haoyu, Deputy General Manager and Chief Engineer of the Urumchi plant.

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