Abstract: A method and plant for hydrolysis of a liquid substrate, having a dry solids content of between 2 and 30%, to be used in an anaerobic fermentation, digestion or another process aimed at producing or extracting methane or other valuable substances, which method and plant relies on the use of vacuum and several pulpers and one or several flashtanks in series for step-wise pre-heating and pressure reduction, respectively.

Abstract: The present invention provides a device for controlling steam explosion of biomass having a dry solids content above 1%, a VS content of above 20%, and including abrasive material, in a pressure relief vessel, which includes one or more blowdown conduits having at their outlets an adjustable open area for regulating the blowdown discharge rate. The adjustable open area of each of the one or more blowdown conduits are constructed in such a way that expansion/spray due to flashing takes place either inside the pressure relief vessel itself or in an additional inlet device through which the discharged biomass is directed from the adjustable open area and into the pressure relief vessel and which either have a large enough dimension to avoid the discharged biomass hitting essential parts of the construction or is made from a highly resistant/durable material.

Abstract: A method and plant for hydrolysis of a liquid substrate, having a dry solids content of between 2 and 30%, to be used in an anaerobic fermentation, digestion or another process aimed at producing or extracting methane or other valuable substances, which method and plant relies on the use of vacuum and several pulpers and one or several flashtanks in series for step-wise pre-heating and pressure reduction, respectively.

Abstract: A method and plant for recovering phosphate from a biomass material, the biomass material suitably being a waste activated sludge from an upstream wastewater treatment process including a biological P removal process. The method includes an anaerobic digestion stage and steps for recovering independent streams rich in PO4 and Mg, or rich in PO4 and NH4, thereby increasing the amount of P recovered and avoiding struvite formation in the anaerobic digester and accessory equipment thereof, such as pipes.

Abstract: The present invention provides a method for recovery of phosphate, in the form of magnesium ammonium phosphate (MAP), from a process for treating a biomass material which process comprises a digestion step performed in a digestion tank and includes a pre-treatment step employing a thermal hydrolysis, characterized in that a magnesium source is added to the material in the process flow before said flow enters the digestion tank, and phosphate is recovered as MAP as an integral part of a solid or semi-solid digestate product from the digestion tank.

Abstract: The present invention provides a method for recovery of phosphate, in the form of magnesium ammonium phosphate (MAP), from a process for treating a biomass material which process comprises a digestion step performed in a digestion tank and includes a pre-treatment step employing a thermal hydrolysis, characterised in that a magnesium source is added to the material in the process flow before said flow enters the digestion tank, and phosphate is recovered as MAP as an integral part of a solid or semi-solid digestate product from the digestion tank.

Abstract: The present invention provides a method for treatment of biomass material by fermentation, said method comprises a pre-treatment of the biomass material by thermal hydrolysis and wet explosion, resulting in an intermediate product having a dry matter concentration above 25% and temperature above 90° C. which is to be introduced to the fermentation, wherein a part of the content of the digestion tank used for the fermentation is recirculated and mixed with a part of the intermediate product from the pre-treatment.

Abstract: The present invention provides a method for treatment of biomass material by fermentation, said method comprises a pre-treatment of the biomass material by thermal hydrolysis and wet explosion, resulting in an intermediate product having a dry matter concentration above 25% and temperature above 90° C. which is to be introduced to the fermentation, wherein a part of the content of the digestion tank used for the fermentation is recirculated and mixed with a part of the intermediate product from the pre-treatment.

Abstract: A method for production of fuel pellets from a biological material, preferably saw dust, wood or similar, where the method comprises the following steps: supplying the material to a drying step (1) and dry the material to a relative humidity from 40-65 weight-percent to 30-45 weight-percent; supplying the material from the dryer step (1), optionally via an intermediate storage step (2), to a reactor step (3, 3?) and heat the material to 200-300° C. by supply of steam; keeping the material in the reactor at the achieved temperature in sufficient time to soften the material; reducing the pressure of the reactor step (3, 3?) in at least two steps, in order to defibrate the material and release of lignin, and supply the material from the reactor step (3, 3?) to an additional drying step (5), optionally via an intermediate storage step (4), and optionally pelletizing of the material.

Abstract: A method for thermal enzymatic hydrolysis of ligno cellulose is provided by feeding a raw material based on ligno cellulose, pH-adjusting and other additives and possibly thinner liquid into one or more reactors, supplying steam to heat and increase the pressure in the reactor, relieving the pressure in the reactor in two steps and provide a hydrolysing of the treated material based on ligno cellulose, mixing the treated material with an enzyme solution and thinner fluid in a mixing step, and feeding the mixture to a liquefaction step and enzymatic saccharificate the treated ligno cellulose material.

Abstract: A method for production of fuel pellets from a biological material, preferably saw dust, wood or similar, where the method comprises the following steps: supplying the material to a drying step (1) and dry the material to a relative humidity from 40-65 weight-percent to 30-45 weight-percent; supplying the material from the dryer step (1), optionally via an intermediate storage step (2), to a reactor step (3, 3?) and heat the material to 200-300° C. by supply of steam; keeping the material in the reactor at the achieved temperature in sufficient time to soften the material; reducing the pressure of the reactor step (3,3?) in at least two steps, in order to defibrate the material and release of lignin, and supply the material from the reactor step (3,3?) to an additional drying step (5), optionally via an intermediate storage step (4), and optionally pelletizing of the material.