Green Leadership! Liming Heavy Industry MTW European Trapezium Mill Consolidates the Powder Preparation Foundation in the Power Plant Desulfurization Sector

Amid the global wave of low-carbon transition, desulfurization of coal-fired power plants, as a core link connecting ecological environmental protection and energy security, is accelerating toward high efficiency, intelligence and green development. The efficient implementation of power plant desulfurization relies fundamentally on high-quality desulfurizers. With superior natural resource endowments, limestone powder features stable and accessible raw material supply, and is compatible with various power plant desulfurization processes. It enables efficient resource recycling and precisely meets the dual needs of power plants for green operation and cost control.

In recent years, newly built circulating fluidized bed (CFB) power plants generally adopt a combined desulfurization solution of in-furnace desulfurization and external flue gas desulfurization. This solution gives full play to the convenience and low-cost advantages of in-furnace desulfurization, while further purifying flue gas through external flue gas desulfurization.

In-furnace Desulfurization: Fuel and limestone are fed into the furnace together. Under fluidized combustion at 850-900°C, limestone is thermally decomposed into calcium oxide, which reacts with sulfur dioxide in flue gas to form calcium sulfite, and is finally discharged along with ash and slag.

External Desulfurization: After entering the rear flue duct, flue gas undergoes secondary desulfurization via semi-dry or wet processes. The semi-dry process injects lime slurry to react with sulfur dioxide and generate sulfate. The wet process absorbs sulfur dioxide through slurry washing, producing recyclable gypsum as a by-product.

Based on the development demands of the power plant desulfurization industry, Liming Heavy Industry draws on nearly four decades of accumulated powder processing technology, focusing on the in-depth adaptation of limestone pulverization and CFB desulfurization processes. It provides a full-chain limestone powder production solution, delivers solid support for the upgrading of power plant desulfurization systems, and continuously drives the high-efficiency, intelligent and green development of the power plant desulfurization sector.

Xiamen Xiangyu Group has deployed a 2.5 million-ton integrated stainless steel smelting industrial cluster in Indonesia, supported by a 2*380MW CFB circulating fluidized bed captive power plant, which serves as the core carrier for the cluster’s energy supply and green development. The stable and efficient operation of the desulfurization system directly determines the project’s environmental compliance and long-term sustainable operation. After extensive selection and comparison, Xiangyu Group ultimately chose Liming Heavy Industry’s MTW European Trapezium Grinding Mill as the core equipment for limestone desulfurizer preparation.

As the key equipment of the system, MTW European Trapezium Grinding Mill features stable and efficient operation and outstanding single-unit production capacity, accurately meeting the large-scale production demands of power plant desulfurization. Equipped with a PLC automatic control system, it enables unmanned intelligent on-site production. With rationally arranged and neatly organized site layout, the project has set a new benchmark for green energy and environmental protection practices in Indonesia.

Processing Material: Limestone

Equipment: 2 sets of MTW European Trapezium Grinding Mill

Finished Powder Application: Power plant desulfurization

MTW European Trapezium Grinding Mill

Core Equipment for Power Plant Desulfurization Pulverizing

Targeting the pulverizing demands in the power plant desulfurization sector, Liming Heavy Industry has developed MTW European Trapezium Grinding Mill drawing on nearly 40 years of R&D and manufacturing experience. Boasting multiple core advantages and adopting innovative grinding technology, the equipment achieves breakthroughs in the transmission system, lubrication system, air duct design, roller and ring structure, finished particle size control and powder separation system, air inlet volute design, intelligent control system and other key aspects.

It can produce limestone powder with different particle sizes simultaneously to meet the requirements of various desulfurization processes. Widely applicable in the preparation of limestone desulfurizers for limestone-gypsum wet flue gas desulfurization (FGD) and inside & outside furnace desulfurization of CFB circulating fluidized bed boilers.

As a one-stop solution provider for powder grinding equipment, Liming Heavy Industry offers a complete integrated solution for the preparation of limestone desulfurizers in power plants. It is adaptable to various power plant desulfurization processes and has been widely applied and verified in numerous energy projects at home and abroad, creating a number of replicable benchmark cases for desulfurization powder production.

Going forward, we will continue to focus on the development needs of the energy and environmental protection sector, iterate solutions through technological innovation, empower the industry’s green upgrading with sophisticated intelligent manufacturing, and deliver solid high-efficiency grinding support for global low-carbon development.