High-Temperature Resistant Reciprocating Grate for Waste Incinerators

Jun 24,2025

High-Temperature Resistant Reciprocating Grate for Waste Incinerators by Dalian Sunshine Boiler Auxiliaries Co., Ltd.

Dalian Sunshine Boiler Auxiliaries Co., Ltd. specializes in manufacturing high-performance reciprocating grates designed for high-temperature waste incinerators. Our grates are particularly suitable for burning municipal solid waste (MSW), biomass, and other fuels with low calorific value and high moisture content.

One of the core advantages of Sunshine’s reciprocating grate lies in its strong material pushing capability, making it highly effective for low-grade fuels such as low-calorific coal, high-ash urban waste, and various types of biomass. The grate bars are made from ZG35Cr24Ni4MnN high-temperature-resistant alloy steel, which ensures excellent durability and long service life under extreme operating conditions.

The driving system of the grate can be configured with hydraulic segmented control, allowing for independent speed regulation of each section to optimize the combustion process based on fuel characteristics.

Unlike traditional single-step reciprocating grates, which may struggle with complete combustion of municipal waste, Dalian Sunshine has developed a three-level step-drop reciprocating grate structure. This innovative design promotes more thorough combustion, improving fuel efficiency and reducing unburned residues.

During operation, waste is fed through a hopper onto an inclined downward-moving grate, which is divided into several functional zones: the drying zone, combustion zone, and burnout zone. As the grate moves in a staggered reciprocating motion, it pushes the waste downward, turning and mixing the material as it moves from one zone to the next. This action ensures better contact between the fuel and air, enhancing combustion efficiency.

Combustion air is supplied from beneath the grate, mixing thoroughly with the waste. The high-temperature flue gas generated during combustion passes through the boiler’s heat exchange surfaces to produce steam, while simultaneously being cooled. After passing through the flue gas treatment system, the cleaned gas is safely discharged.

With proven technology and continuous innovation, Dalian Sunshine Boiler Auxiliaries Co., Ltd. provides reliable and efficient grate systems that meet the demanding requirements of modern waste-to-energy plants.