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[Industrial Silicon] Hongyuan Energy Technology’s 150,000-ton-per-year industrial silicon YT high-temperature desulfurization, dust removal, and denitrification integrated environmental protection island project

[Industrial Silicon] Hongyuan Energy Technology’s 150,000-ton-per-year industrial silicon YT high-temperature desulfurization, dust removal, and denitrification integrated environmental protection island project

Yitai Technology employs a globally pioneering production process featuring “two-stage waste heat recovery, a fully dry dust–sulfur–nitrogen removal system, and AI-powered intelligent collaborative control,” achieving increased output while reducing energy consumption. Dust emission concentration is below 1 mg/Nm³, SO₂ emissions are below 30 mg/Nm³, and NOx emissions are below 40 mg/Nm³.

More information

Email:

info@yitaicd.com

Tel:

+8613550157960

[Project Background]

The Hongyuan Green Energy Baotou Industrial Silicon Project represents a pivotal step in the company’s efforts to build a complete photovoltaic industry chain and extend upstream into raw-materials production. While meeting increasingly stringent ultra-low-emission standards, the project must also address the industry’s common challenges: unstable environmental performance, high energy consumption, and poor system integration inherent in conventional processes. Against this backdrop, Yitai Technology has developed a high-temperature integrated sulfur–dust–nitrogen environmental protection energy island for the project, which has now been successfully implemented as a demonstration facility and has achieved long-term stable operation.

[EasyState Solution]

Yitai Technology employs a globally pioneering production process that integrates “two-stage waste heat recovery, a fully dry dust–nitrogen–sulfur removal system, and AI-powered intelligent collaborative control”:

Application 1: Two-stage waste heat recovery + high-temperature desulfurization/dust and nitrate integrated all-dry process + AI-based intelligent collaborative control – for collecting ordinary microsilica powder

Applied in Phase I of the project, resulting in a land-saving of 21 × 80 = 1,680 square meters.

Application 2: Two-stage waste heat recovery + integrated dust–sulfur removal/low-temperature dry desulfurization + AI-powered intelligent collaborative control—producing high-quality microsilica powder

Applied to Phase II of the project, Land savings: 21 × 10⁵ = 2,205 m²

Core Technology: Utilizing YT high-temperature metal membranes and membrane separation technology specifically designed for industrial silicon, combined with “dust–denitrification integration” process equipment, the system achieves dust removal prior to denitrification, thereby resolving the challenge of catalyst clogging.
Proactive Control: Leveraging the high-temperature resistance of metal membranes, the cold-air protection device is eliminated, enabling direct, proactive “one-to-one” control of the electric furnace by the main blower (blower-direct-furnace-control technology).
Intelligent Collaboration: Leveraging AI-driven control to seamlessly integrate furnace condition monitoring with eco-friendly energy island management, thereby reducing reliance on operator expertise and workforce size.

【Main Technical Parameters】

Capacity Enhancement: The average daily output per furnace is approximately 63 tonnes, with a peak of 73 tonnes, setting a new industry record; the electric furnace capacity is now fully utilized.
Reduced energy consumption: Electricity consumption in electric furnace smelting has been reduced to 9,500–10,500 kWh per ton of silicon, and microsilica powder production has been lowered to less than 300 kg per ton of silicon, setting a new industry record.
Thermal energy utilization: produces 25–28 tonnes of 3.82 MPa, 450°C steam;
Ultra-low emissions: particulate matter emission concentration < 1 mg/Nm³, SO₂ emission < 30 mg/Nm³, and NOx emission < 40 mg/Nm³—performance that significantly exceeds the national ultra-low emission standards.
Economic Benefits: Annual efficiency improvement of approximately RMB 11 million per set This results in an additional revenue of approximately RMB 500 per ton of silicon, annual CO₂ emission reductions of about 31,614 tons, and savings of roughly 12,810 tons of standard coal.
A waste heat boiler with an outlet temperature of 350°C and a gas flow rate of 260,000 Nm³/h.
Compatible with a 33,000 kVA smelting furnace.

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[Industrial Silicon] Hongyuan Energy Technology’s 150,000-ton-per-year industrial silicon YT high-temperature desulfurization, dust removal, and denitrification integrated environmental protection island project

[Project Background]

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