Eco-Tec and Apollo Environmental Systems join forces to market biogas purification technology
Eco-Tec announces it has created a new sales and marketing division, Eco-Tec Gas Processing, in conjunction with its exclusive licensing rights of Apollo Environmental Systems Limited's proprietary gas cleaning technology.
Eco-Tec has acquired rights for a biogas scrubbing technology developed by Apollo Environmental Systems, which is focused on removing hydrogen sulfide (H2S) from biogas. The agreement includes multiple patents for and acquired knowledge of specific applications to purify methane and other gases. The recovery and purification process allows biogas produced through anaerobic digestion to be used more cost-effectively for power, steam, or heat generation. This energy recovery results in dramatic reductions in greenhouse gas emissions.
The news is interesting in the context of the rising interest in feeding purified biogas into natural gas grids, where the removal of trace gases like H2S is a precondition (see earlier).
Biogas is a mixture of methane (CH4) and carbon dioxide (CO2) and is often contaminated with toxic quantities of hydrogen sulfide (H2S). Reducing H2S levels in biogas reduces sulfur dioxide emissions, reduces equipment corrosion and fouling, offers cost savings associated with lower maintenance requirements, and results in greater energy recovery. Removal of hydrogen sulfide can improve the economic feasibility of energy recovery by reducing maintenance and operating cost for equipment handling the biogas.
The technology acquired by Eco-Tec is a biogas scrubbing process for the removal of H2S and particulate matter from biogas as it is produced: a high efficiency gas-liquid contactor that has as its basis an impeller-shroud mixing device. The scrubber removes H2S from a gas stream using a regenerating scrubbing solution in a dual-tank system. Gases containing up to or over 20,000ppmv H2S and at a flow rate of 100 to 5000 ACFM, are routed through a scrubbing vessel where more than 98% of the H2S is extracted with an aqueous scrubbing solution which uses well known iron redox chemistry. The regeneration vessel uses atmospheric oxygen to convert H2S from the scrubbing solution to elemental sulfur that is non-hazardous and can be disposed of safely with biosolids, as a fertilizer or in a landfill. The regenerated scrubbing solution is returned to the scrubbing vessel (see diagram, click to enlarge):
bioenergy :: biofuels :: energy :: sustainability :: biogas :: purification :: methane :: natural gas :: anaerobic digestion ::
Anaerobic digestion processes take place in facilities such as municipal waste treatment plants, landfills, food processing facilities, and livestock farms. More and more often, though, biogas is produced in large plants that use dedicated energy crops as feedstocks. Each facility type has various levels of H2S, and all can be easily and economically removed from the produced biogas with Eco-Tec's new system.
The innovative biogas scrubbing technology was invented by researchers from the University of Toronto's Department of Chemical Engineering & Applied Chemistry. All of Eco-Tec's products offer high purification and recovery in a simple package with proven reliability. The key characteristics of the newly acquired technology provide a synergistic addition to the product line, offering economical solutions to address industrial operating needs and sustainable development.
For over 30 years, Eco-Tec has addressed environmental preservation through its many recovery and purification products. Eco-Tec is an award- winning, globally recognized manufacturer of water purification and chemical recovery systems for industrial operations. Eco-Tec provides proven integrated technologies that offer significant cost reduction and superior process efficiency. Eco-Tec's products have been installed in more than 1500 systems worldwide.
Eco-Tec has acquired rights for a biogas scrubbing technology developed by Apollo Environmental Systems, which is focused on removing hydrogen sulfide (H2S) from biogas. The agreement includes multiple patents for and acquired knowledge of specific applications to purify methane and other gases. The recovery and purification process allows biogas produced through anaerobic digestion to be used more cost-effectively for power, steam, or heat generation. This energy recovery results in dramatic reductions in greenhouse gas emissions.
The news is interesting in the context of the rising interest in feeding purified biogas into natural gas grids, where the removal of trace gases like H2S is a precondition (see earlier).
Biogas is a mixture of methane (CH4) and carbon dioxide (CO2) and is often contaminated with toxic quantities of hydrogen sulfide (H2S). Reducing H2S levels in biogas reduces sulfur dioxide emissions, reduces equipment corrosion and fouling, offers cost savings associated with lower maintenance requirements, and results in greater energy recovery. Removal of hydrogen sulfide can improve the economic feasibility of energy recovery by reducing maintenance and operating cost for equipment handling the biogas.
The technology acquired by Eco-Tec is a biogas scrubbing process for the removal of H2S and particulate matter from biogas as it is produced: a high efficiency gas-liquid contactor that has as its basis an impeller-shroud mixing device. The scrubber removes H2S from a gas stream using a regenerating scrubbing solution in a dual-tank system. Gases containing up to or over 20,000ppmv H2S and at a flow rate of 100 to 5000 ACFM, are routed through a scrubbing vessel where more than 98% of the H2S is extracted with an aqueous scrubbing solution which uses well known iron redox chemistry. The regeneration vessel uses atmospheric oxygen to convert H2S from the scrubbing solution to elemental sulfur that is non-hazardous and can be disposed of safely with biosolids, as a fertilizer or in a landfill. The regenerated scrubbing solution is returned to the scrubbing vessel (see diagram, click to enlarge):
bioenergy :: biofuels :: energy :: sustainability :: biogas :: purification :: methane :: natural gas :: anaerobic digestion ::
Anaerobic digestion processes take place in facilities such as municipal waste treatment plants, landfills, food processing facilities, and livestock farms. More and more often, though, biogas is produced in large plants that use dedicated energy crops as feedstocks. Each facility type has various levels of H2S, and all can be easily and economically removed from the produced biogas with Eco-Tec's new system.
The innovative biogas scrubbing technology was invented by researchers from the University of Toronto's Department of Chemical Engineering & Applied Chemistry. All of Eco-Tec's products offer high purification and recovery in a simple package with proven reliability. The key characteristics of the newly acquired technology provide a synergistic addition to the product line, offering economical solutions to address industrial operating needs and sustainable development.
For over 30 years, Eco-Tec has addressed environmental preservation through its many recovery and purification products. Eco-Tec is an award- winning, globally recognized manufacturer of water purification and chemical recovery systems for industrial operations. Eco-Tec provides proven integrated technologies that offer significant cost reduction and superior process efficiency. Eco-Tec's products have been installed in more than 1500 systems worldwide.
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