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 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 describes a method and device for pretreatment of organic material, more specific bio mass, for energy conversion, where said method comprises a first preheating step with a preheating vessel (4), a hydrolysis step with a hydrolysis reactor (5) and a pressure reducing step with a pressure reduction vessel (6), where the transfer of said organic material from the preheating vessel (4) to the hydrolysis rector (5) is effected by gravity and by creating a vacuum in the reactor (5). This method results in a very fast transfer of material from the preheating vessel (4) to the reactor (5). In addition, the filling volume of the reactor (5) is being controlled by a high frequency pressure sensor and supply of steam (3A) to the top of the reactor in order to provide the necessary head space. The invention also describes a device for performing said method.

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 describes a method and device for pretreatment of organic material, more specific bio mass, for energy conversion, where said method comprises a first preheating step with a preheating vessel (4), a hydrolysis step with a hydrolysis reactor (5) and a pressure reducing step with a pressure reduction vessel (6), where the transfer of said organic material from the preheating vessel (4) to the hydrolysis rector (5) is effected by gravity and by creating a vacuum in the reactor (5). This method results in a very fast transfer of material from the preheating vessel (4) to the reactor (5). In addition, the filling volume of the reactor (5) is being controlled by a high frequency pressure sensor and supply of steam (3A) to the top of the reactor in order to provide the necessary head space. The invention also describes a device for performing said method.

Abstract: A method is described for thermal biological breakdown and dewatering of biomass, which is characterised in that it comprises the following steps: lead the biological residue material (8) from a digesting tank (6) to a dewatering device (9) and dewater the material to typically 15-25% dry matter, lead the dewatered material (10) to a device (12) and carry out a thermal hydrolysis at typically 145-170° C. for typically 10-40 minutes, subject the hydrolysed biomass (14) to a quick pressure reduction that results in a steam explosion in the biomass, dewater the thermally hydrolysed and steam exploded hot biomass (14), at typically 85-105° C.

Abstract: It is described a process for thermal hydrolysis and team explosion of biomass, said method comprising the steps of: (i) leading the biomass approximately continuous to a first preheating step and preheat the biomass, (ii) leading the preheated biomass into at least two reactors sequentially, (iii) heating and pressurising the reactor by addition of steam, (iv) keeping the reactor(s) at a certain temperature and pressure for a certain time, (v) leading the heated and pressurized biomass from the reactor(s) to a first pressure relief tank without any substantial pressure reduction and quickly relief the pressure of the biomass by means of a nozzle, in order to disintegrate the biomass, (vi) leading the biomass from the first pressure relief tank to a second pressure relief tank having a lower pressure than the pressure of the first pressure relief tank, (vii) leading the so treated biomass to a downstream facility for subsequent treatment. The invention also comprises a device for thermal treatment of biomass.

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: The present invention provides a method for treatment of lignocellulosic organic waste or biomass, by which the carbohydrates are rendered more available for subsequent hydrolysis, e.g. by means of addition of enzymes or direct fermentation to one or more desired products. The invention more specifically relates to a method comprising a combination of the following process steps: thermal hydrolysis, wet oxidation and wet explosion. The method according to the present invention can operate with undivided or only poorly divided substrate having a high dry matter concentration.

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 of and an arrangement for continuous hydrolysis of organic material in the form of sludge with a dry solids content of 1-20%. A sludge containing the organic material with a low content of abrasive components and a dry solids content of 1-20% is heated to a temperature of approximately 100° C. The sludge is mixed with steam at a pressure of 1-4 bars. The sludge/steam mixture is lead to a preheating tank. The pressure of the sludge/steam mixture is increased from 3 to 10 bars. The sludge-steam mixture is lead to a reactor. A depressurizing tank depressurizes the sludge/steam mixture to 1-4 bars. The sludge and steam are separated and may be cooled.

Abstract: Hydrolyzing organic waste material in a multi-stage reactor comprising a heated first stage, a further heated second stage, a still further heated third stage, and a fourth stage, with a valved exit way connected to the fourth stage and a valve entryway connected to the first stage.