Engas - Biogas Upgrading Technology
Engas UK is introducing a well proven, robust and rugged containerised biogas upgrading technology to convert raw biogas into Bio-CNG fuel. Engas uses only water to clean raw biogas. We are able to remove H2S from as high as 1200 ppm to less than 50ppm or even less than 20ppm depending on other aspects. We can enrich raw biogas up to 95% pure bio-methane in a single-scrubbing process which is suitable as vehicles fuel or in gas-gensets to make electricity. We also remove CO2, NH3, Siloxanes from raw biogas. We can also remove NOx emission and post combustion CO2 emission from the exhausts of gas-genset to make it completely zero emission solution.
Engas UK’s Novelty:
Direct Compression of Raw Biogas to upgrade it and fill biomethane into cylinders. Engas UK compressor uses a water column providing 100% gas seal which can compress any gas from ambient pressure up to 250bar. Engas UK`s technology has >98% volumetric efficiency compared to 75% in competitor`s system.
The present state of the art requires raw biogas to be compressed first at 8-10bar; then the CO2 is removed by various methods i.e. Pressure Swing Absorption, membrane filtration, scrubbing in water/amine solution and also by cryogenic method.
But Engas UK`s novel CO2 capturing compressor eliminates the conventional multiple-steps of 8-10bar compression, CO2 removal and then gas-drying, by just one single step of DIRECT COMPRESSION of Raw-dirty biogas by a water column, to produce 97% pure bio-methane at 50% better efficiency, at higher reliability due to less-parts-count and at 70-90% lower capital cost.
Engas UK`s CO2 capturing compression chamber has NO MOVING part as no wear and tear. The core innovation has been reviewed by several world leading companies and Engas UK has already sold this product and now beyond the prototyping stage.