HOFGAS - Model CFM4c - Coal Mine Methane Flare
From Coal Mine Gas
The HOFGAS-CFM4c high temperature flare provides safe and environmentally-friendly combustion of coal mine gas. The exhaust gas emissions meet the stringent requirements with destruction efficiency > 99.95% in relation to methane gas. This is achieved with combustion temperatures between 1’000 - 1’200°C and a defined residence time of > 0.3s.
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Depend on technology in underground coal mining me...
Depend on technology in underground coal mining methane gas with specific concentration range has to be extracted and flared. HOFGASÒ- CFM4c flare is able to burn methane concentration from 20 vol.% up to 95 vol.%, the limiting factor for low methane contents is the oxygen level, the gas mixture has to be processed outside the explosion triangle of methane gas.
For each specific project the HOFGAS- CFM4c flare is designed for the defined gas mixture. In case the mining technology is changed after some time and gas is extracted outside the specified range, the burner part of the flare can be redesigned and modified in short time and low costs.
All control functions are integrated in a weather proof control cabinet, wired up ready for connection.
- Efficient combustion of methane gas within the defined operation range
- Automatic temperature control
- Controlled and concealed combustion
- Combustion temperature 1'000 - 1’200°C
- Residence time more than 0.3 s
- Insulated combustion chamber with coated ceramic fibre insulation
- High safety standard, fulfilling the latest ATEX standards
General Specifications
- Gas flow rate: 300 - 10’000 Nm3/h
- Burner capacity up to: 60'000 KW
- Methane concentration: 20 - 94* vol. %
- Combustion temperature: 1’000 - 1’200 °C
- Residence time: > 0.3 s
- Turn down ratio: 1 : 5/ 1:10
- Initial gas pressure: 80 - 150 mbar
- Expected sound pressure level (15m distance): < 69 dB(A)
Safety Features
- Flame arrester
- Slam shut valve
- Ignition burner with controlled ignition sequence
- Burner control unit with UV detection
Site Preparation
- Foundation and Electricity supply
- Pre-dewatering
- Pipeline connection
Options
- Frost protection
- Extended turn down ratio up to 1:20
- Low noise design with < 65 dB(A) at 10 m
- Piping and combustion chamber in stainless steel AISI304 or higher quality
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