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Waste Gas Collection Systems
Non-Condensable Gas (NCG)
Collection Systems
A. H. Lundberg Systems Limited® is the leading supplier of Non-Condensable Gas (NCG) collection systems to the pulp and paper industry, with over 200 systems installed worldwide.
We have over 70 years of experience designing and supplying waste gas collection systems, thermal oxidizers, boiler gas injection systems, and incinerators to handle all types of NCG sources. Our Thermal Oxidizer Systems are designed to handle gases of varying concentration and composition, and to meet or exceed all specified regulatory requirements. Our experienced team can solve problems related to waste gas management, in all process industries.
Pulp & Paper – Non-Condensable Gas Collection System
Kraft pulp mills are normally characterized by a distinct foul odor caused by sulphur compounds, referred to as Total Reduced Sulphur (TRS), that are generated in the Kraft pulping process when wood is cooked with Kraft liquor. Typically, TRS gases found in the highest concentrations are hydrogen sulfide, methyl mercaptan), dimethyl sulfide, and dimethyl disulfide.
TRS gases emitted from digesters, evaporators, turpentine systems, strippers, brown stock washers, and liquor storage tanks are referred to as Non-Condensable Gases (NCG).
AHLS specializes in the design and installation of collection & handling systems to address:
- Concentrated Non-Condensable Gas (CNCG)
- Dilute Non-Condensable Gas (DNCG)
- Stripper Off-Gas (SOG)
- Tank Vent Systems
- Chip Bin Vents & Low Pressure Feeder Vents and
- Digester De-pressurization (DDP) System
The AHLS waste gas collection and conditioning system may include the removal and recovery of condensates, gas reheating, and pressurization to safely convey the gases to the point of thermal oxidation. The thermal value and sulphur content of the waste gases typically determines which thermal oxidizer technology will be applied. The presence or absence of oxygen and toxins in the waste gas will dictate how it can be handled safely.
Waste gas pollutants addressed include air-borne particulate matter, acid mist, volatile organic hydrocarbons,
inorganic gases, and combinations of these hazardous air pollutants.
Our experience for the destruction of waste gases includes the implementation of a variety of technologies,
which include flares, power boilers, lime kilns, recovery boilers, direct-fired oxidizers (incinerators), regenerative catalytic oxidizers (RCOs) and regenerative thermal oxidizers (RTOs).
Installations range from complete system integration of the air pollution equipment, system add-ons and
retrofits. The engineering and design of upgrades to meet progressively more stringent emissions requirements.
Waste Gas Collection Systems
Biogas and Landfill Collection and Utilization
Safe and environmentally friendly energy recovery
Anaerobic digestion has proved successful in many applications for its ability to recycle biogenic wastes to produce bio-gas. While landfill gas (LFG) recovery has become a standard technology in most industrialized countries for safe and environmental energy recovery, these gases which contain up to 80% methane, have increasingly been used in combined heat and power (CHP) engines and turbines, or as a supplement to natural gas in industrial equipment such as boilers, dryers, and heat pumps.
AHLS can assist in determining the best usage for your bio-gas or landfill gas, and can provide complete gas collection, treatment, transport, and custom burner systems.