1. Battery type and technical parameter 

In accordance with the varieties of coal sources and the specific requirements of clients, ACRE offers custom-designed stamp-charging coke ovens with various coking chamber heights and production capacities, along with comprehensive cokemaking technology and fully integrated equipment solutions. 

The table below shows the technical characteristics of typical stamp-charging coke oven batteries. 

Typical Stamp-charging Coke Oven 

2. Structural Features and Technical Advantages 

The development and design optimization of stamp-charging coke ovens have incorporated advanced design tools and methodologies, along with multiple advanced technologies. These ovens have attained international leadership in energy efficiency, environmental performance, service life, and intelligent operation, primarily demonstrated through the following aspects: 

（1）Clean Coke-making and Ultra-Low Emissions 

ACRE has developed multiple proprietary emission reduction technologies, including Staged Supply Low-NOx Combustion Technology (LNCT®), Segmented Supply Cold End Control Technology, and Wall Leakage Control Technology (WLCT®). Through simulation-driven optimization of key structures and dimensions in the coke oven combustion system, ACRE has achieved enhanced heating uniformity along both the longitudinal and vertical directions, minimized gas leakage through oven walls, and reduced NOx generation at the source. This integrated approach ensures clean and highly efficient cokemaking. The lateral temperature coefficient of the coke oven achieves values above 0.95, with the free space temperature maintained within 800±30°C. Furthermore, vertical heating uniformity can be adjusted in real-time outside of oven. During coal charging and coke pushing operations, visible smoke emissions are effectively eliminated. When heating with mixed gas heating, NOx emissions are maintained below 150 mg/m³;  when heating with coke oven gas, NOx levels are controlled under 300 mg/m³, achieving world-leading performance standards. 

Coke Oven Flue Temperature and NOx Distribution Diagram 

（2）Energy Saving and Consumption Reduction 

ACRE has developed a series of advanced technologies including high-integrity oven construction, combined coke oven heating regulation, and high-efficiency regenerator systems. The implementation of new high-performance refractories such as high-thermal-conductivity silica bricks significantly reduces internal gas leakage and heat dissipation, improves heating uniformity and overall thermal efficiency, thereby effectively lowering cokemaking heat consumption. When COG is used for heating, the heat consumption of stamp-charging coke oven can be reduced to below 2,350 kJ/kg (for lean gas heating) and below 2,150 kJ/kg (for COG heating), while the thermal efficiency of the oven can achieve over 77%. 

Regenerator Gas Flow Distribution 

（3）Stable Operation and Long Service Life 

Through theoretical analysis and advanced simulation techniques, the critical dimensions and internal configuration of the coke oven have been optimized. The implementation of large-staggered and embedded structure has significantly reduced gas cross leakage while enhancing structural integrity and SUGA value of oven wall. Simulation-driven optimization is applied to the protective force and vertical distribution of the oven bracing system, while enhancing wall stability and mitigating gas leakage. This approach effectively prolongs the service life of stamp-charging coke ovens, enabling a campaign life exceeding 25 years. 

Coke Oven Structural Strength Simulation 

（4）Intelligence & Efficiency 

The coke oven integrates a series of intelligent technologies to optimize production processes, enabling manning reduction and efficiency Improvement while providing upgrade interfaces for future unmanned operations. The integrated Coke Oven Operation Management System, Oven Machine Coordination System, and the Chamber Pressure Stabilization technology enables fully automatic charging and pushing operations. Battery Control & Management System (BCMS) enables intelligent thermal management of coke oven battery. The application of the Coke Oven Machine Coordination System enables unmanned operation of coke oven machines. 

The coke oven is equipped with comprehensive safety measures and emergency interlock system. It provides systematic protection through monitoring, intelligent regulation, and automatic emergency handling of hazardous energy sources. Critical equipment operates in either continuous or triggered safety interlock mode, ensuring the fundamental protection of safety and property in case of malfunction and delivering life-cycle safety protection for coke oven operations. 

HMI of Intelligent Unmanned Control System for Coke Ovens of Baosteel Zhanjiang Project 

（5）Customized Design 

ACRE boasts a strong technical team in cokemaking, capable of providing customized coke oven solutions tailored to client requirements. 

Custom-designed oven dimensions based on key client criteria—minimizing CAPEX and OPEX. 

Based on the client's coal characteristics – including VMs of coal blends and coal cake contraction rate – and in combination with the combustion chamber structure, the optimal heating level height (hairpin) is custom-designed. This tailored approach reduces graphite deposition in the oven chamber, minimizes by-products cracking, and improves the by-products yield. 

Customized refractory solutions are developed based on the client's investment budget and operational preferences. It may incorporate advanced materials such as high-thermal-conductivity silica bricks, lightweight silica bricks, and pre-fabricated castables to achieve energy savings and emissions reduction. 

The battery heating system is custom-designed based on the client's specific gas conditions, including composition, stability, and calorific value, to minimize operation costs. 

（6）Rebuilding and Revamping of Existing Coke Ovens 

For clients seeking to rebuild or revamp existing coke ovens, ACRE can provide a newly-designed oven proper built to the exact dimensions of the existing battery. This approach allows for the maximum utilization of existing equipment and oven machine. Furthermore, more energy-efficient and environmentally-friendly cokemaking technologies are adopted to reduce both the cokemaking heat consumption and the emission of pollutants such as NOx in new coke ovens.