Hydrogen Energy Comprehensive DC Electric Arc Furnace Complete Equipment

Product Overview

Core Features

1. Hydrogen Integration for Low-Carbon Smelting

• Hydrogen Injection System: Equipped with a high-pressure hydrogen injection system (10-30 MPa) that delivers hydrogen into the furnace through specialized nozzles. Hydrogen acts as a reducing agent (replacing up to 30-50% of coke) and auxiliary fuel, reducing CO₂ emissions by 20-40% compared to traditional electric arc furnaces.
• Safe Hydrogen Handling: Incorporates hydrogen leak detection, pressure relief valves, and flame arresters to ensure safe operation. The system meets international hydrogen safety standards (e.g., ISO 14687, SAE J2579).

2. DC Electric Arc Furnace Advantages

• Efficient Energy Conversion: DC technology provides stable arc discharge with high energy density, resulting in faster melting (10-15% higher productivity) and lower power consumption (250-350 kWh/ton of steel, depending on raw materials).
• Uniform Temperature Distribution: The DC arc creates a rotating molten pool, ensuring uniform temperature and composition, which improves product quality and reduces refractory wear.

3. Intelligent Control & Automation

• PLC + AI Control System: Real-time monitors hydrogen flow, furnace temperature, voltage, current, and molten pool parameters. AI algorithms optimize hydrogen injection and electric power input to maintain optimal smelting conditions.
• Remote Operation & Monitoring: Supports remote access via a secure cloud platform, allowing operators to monitor and control the furnace from anywhere. Includes predictive maintenance alerts to minimize downtime.

4. Durable & Reliable Design

• High-Quality Refractories: Furnace lining uses magnesia-carbon or alumina-carbon bricks, resistant to high temperatures (up to 1800℃) and corrosion from molten metals and slags.
• Water-Cooled Components: Water-cooled furnace shell, electrodes, and tuyeres extend equipment lifespan and reduce maintenance costs.

5. Flexible & Scalable Configuration

• Customizable Capacity: Available in capacities ranging from 5 to 100 tons per batch, suitable for small-scale foundries to large integrated steel plants.
• Multi-Fuel Compatibility: Can operate with hydrogen, natural gas, or a combination, providing flexibility based on fuel availability and cost.

Technical Parameters

Application Fields

• Steel Production: Smelting scrap steel, direct reduced iron (DRI), and pig iron.
• Non-Ferrous Metals: Aluminum, copper, and nickel smelting.
• Alloy Manufacturing: Production of stainless steel, tool steel, and specialty alloys.
• Mineral Processing: Reduction of iron ore and other metal oxides.

Why Choose Us?

• Green Technology Leader: Pioneering hydrogen integration in electric arc furnaces, helping clients achieve carbon neutrality goals.
• Customized Solutions: Tailor-made equipment based on specific production needs, raw materials, and energy sources.
• Comprehensive Support: From design and installation to training and maintenance, our team provides end-to-end service.
• Proven Performance: Globally recognized with successful installations in Europe, Asia, and North America.

Equipment use:
The LENR1-350/75 synthetic gas production equipment is mainly used for heating and cracking the solid-liquid mixture (water) to obtain a new combustible gas mixture.

Overview of working principle:
Under a certain pressure and temperature, the solid-liquid mixture is heated by the arc generated between the electrodes. Under the action of high temperature of the arc, the solid-liquid mixture is cracked to produce a combustible mixture of hydrogen (H2) and carbon monoxide (CO) as the main components.
Electrode (arc) + solid-liquid mixture → combustible gas mixture

Equipment features:
1) The low voltage constant current power supply system is adopted, and the fusion cracking of the mixture of material and liquid (water) is carried out by high power arc to produce a new combustible mixture of hydrogen (H2) and carbon monoxide (OC);
2) Automatic monitoring and automatic adjustment of the temperature, liquid level and pressure of the feed liquid mixture in the cracking tank to achieve continuous and stable operation of the cracking device for a long time;
3) Automatically monitor and record the flow and pressure of the mixed combustible gas generated by cracking and automatically adjust it to achieve continuous long-term compression and storage of combustible gas;
4) To achieve continuous automatic electrode feeding, automatic screwing, automatic centering, precision feed control stable arc and longitudinal double-station collet automatic switching, etc., to ensure stable arc reaction of anode and cathode electrodes;
5) To achieve safe system startup, start and stop charging and scavenging nitrogen, multi-point real-time monitoring and automatic elimination of combustible gas around the equipment, and emergency shutdown;
6) The electrode transmission mechanism can realize manual and automatic conversion, independently realize startup and shutdown, and can also realize linkage, which is convenient for troubleshooting equipment repair and debugging maintenance;
7) To realize the water pressure and water temperature monitoring alarm signal of circulating cooling water, the cooling water device respectively provides the tank electrode seal, conductive chuck, water-cooled cable, DC power supply and other cooling.
8) The industrial control computer mainly monitors the process, and can set and modify the field parameters. The site signal is collected and transmitted by the programmable controller PLC of the lower computer, and communicates with the executing instruments. Field control parameters such as arc voltage, current, power; Electrode feed control accuracy, position accuracy; Gas pressure, temperature, etc.; Centralized control and monitoring display of temperature, liquid level and flow rate of the mixture.
9) Large screen monitoring screen, to achieve more than nine screen centralized display, to achieve the electrode position in the cracking tank liquid, arc state monitoring, to achieve the loading, feed mechanical transmission state display, to achieve the gas flow, pressure, temperature and other field display.