Abstract: A system and method for recovering high-quality biomethane (RNG) from biogas sources is provided. The gas stream is compressed and liquids are separated from the gas stream at elevated pressure and reduced temperature. The compressing is performed using a plurality of compressors operating in parallel with common control set points. The system and method improve upon conventional practices and yield a biomethane product which meets strict gas pipeline quality specifications. Additionally, the system and method are an improvement to the overall methane recovery efficiency for biogas processing facilities.

Abstract: A cooking vessel for oven cooking comprises an outer vessel, an inner vessel and a lid all preferably of ceramic material. The inner vessel is supported on supports above a well of the outer vessel containing water and is so shaped and located with respect to the outer vessel as to form an annular gap therebetween communicating through passages with the well. The sidewall of the inner vessel is inclined inwardly at its upper end and forms with a downwardly depending circumferential ridge of the lid a continuation of the gap with a spatial increase beneath the ridge. In operation and when the cooking vessel is heated in an oven, water vapor from the water circulates in paths immediately beneath the lid and through the gap and further water vapor from food within the inner vessel moves in paths beneath said paths without undue mixing of the water vapor and the further water vapor.