| WO2000018680A1 | 2000-04-06 |
| JP2004244275A | 2004-09-02 | |||
| US6632846B2 | 2003-10-14 |
SALEM MOHAMED ET AL: "Applications of Thermal Energy Storage in Solar Organic Rankine Cycles: A Comprehensive Review", FRONTIERS IN ENERGY RESEARCH, vol. 9, 13 October 2021 (2021-10-13), XP093069814, Retrieved from the Internet
| Claims Integrated process for the conversion of organic waste, the process comprising i) feeding organic waste to a steam reforming stage a), the steam reforming stage a) producing at least one steam reforming product gas stream a1); ii) feeding at least part of the steam reforming product gas stream a1) to a water gas shift reaction (WGS) stage b), the WGS stage b) producing at least one WGS stage product stream b1), iii) feeding at least part of the WGS stage product stream b1) to a gas separation stage c), the gas separation stage c) providing c1) a hydrogen-containing stream comprising at least 98 percent by weight of hydrogen, and c2) a carbon-dioxide- containing stream; iv) feeding at least part of the c1) hydrogen-containing stream to a stage providing electrical energy d). The process of claim 1 , further comprising iv) feeding at least part of the c1) hydrogen-containing stream to - a Liquid Organic Hydrogen Carrier (LOHC) hydrogenation stage e), the LOHC hydrogenation stage providing a hydrogen-loaded LOHC (LOHC+) stream; and/or - a Fischer Tropsch stage f). The process of claim 1 or claim 2, wherein the steam reforming stage a) further comprises a slag product stream a2); preferably wherein the slag product stream a2) comprises noble metal and/ or rare earth elements. The process of any of the preceding claims, wherein the WGS stage b) further comprises a slag product stream b2); preferably wherein the slag product stream b2) comprises noble metal and/ or rare earth elements. The process of any of the preceding claims, wherein the stage providing electrical energy d) is a fuel cell. The process of any of the preceding claims, wherein the stage providing electrical energy d) provides electrical energy to the steam reforming stage a). The process of any of claims 2 to 6, wherein the LOHC hydrogenation stage e) comprises an off heat recovery stage; preferably wherein the off heat recovery stage is an Organic Rankine Cycle (ORC) stage. Integrated unit for the conversion of organic waste, the unit comprising i) a steam reforming unit A), the steam reforming unit A) having means for producing at least one steam reforming product gas stream from an organic waste feed; ii) a water gas shift reaction (WGS) unit B), the WGS unit B) having means for producing at least one WGS unit product stream from at least part of the steam reforming product gas stream; iii) a gas separation unit C), the gas separation unit C) having means for providing, from a feed of at least part of the WGS stage product stream, of c1) a hydrogen-containing stream comprising at least 98 percent by weight of hydrogen, and c2) a carbon-dioxide- containing stream; iv) a unit providing electrical energy D). the unit providing electrical energy D) having means for generating electrical energy from a feed of at least part of the c1) hydrogen-containing stream. |
The present invention relates to an integrated process for the conversion of organic waste into hydrogen stored in Liquid Organic Hydrogen Carriers (LOHC) and captured CO2 in a corresponding integrated unit and alternatively producing synfuels (eDIESEL and SAF) with the non-stored hydrogen and the captured CO2. Moreover, the invention relates to a corresponding integrated unit.
[1 ] In a first aspect, the invention relates to an integrated process for the conversion of organic waste, the process comprising i) feeding organic waste to a steam reforming stage a), the steam reforming stage a) producing at least one steam reforming product gas stream a1); ii) feeding at least part of the steam reforming product gas stream a1) to a water gas shift reaction (WGS) stage b), the WGS stage b) producing at least one WGS stage product stream b1), iii) feeding at least part of the WGS stage product stream b1) to a gas separation stage c), the gas separation stage c) providing c1) a hydrogen-containing stream comprising at least 98 percent by weight of hydrogen, and c2) a carbon-dioxide- containing stream; iv) feeding at least part of the c1) hydrogen-containing stream to a stage providing electrical energy d). According to the invention, all types of organic waste (including plastic) waste may be used, but it should preferably be separated to not receive emissions other than CO2 and solid slag which can be refurbished, and the rest can be used for road building.
[2] Preferably, the process of claim 1 , further comprises iv) feeding at least part of the c1) hydrogen-containing stream to
- a Liquid Organic Hydrogen Carrier (LOHC) hydrogenation stage e), the LOHC hydrogenation stage providing a hydrogen-loaded LOHC (LOHC+) stream; and/or
- a Fischer Tropsch stage f).
[3] In the process of the invention, the steam reforming stage a) further comprises a slag product stream a2); more preferably the slag product stream a2) comprises noble metal and/or rare earth elements.
[4] In the process of the invention, the WGS stage b) preferably further comprises a slag product stream b2); more preferably the slag product stream b2) comprises noble metal and/ or rare earth elements.
[5] In the process of the invention, the stage providing electrical energy d) is preferably a fuel cell.
[6] In the process of the invention, the stage providing electrical energy d) preferably provides electrical energy to the steam reforming stage a).
[7] The LOHC hydrogenation stage e) preferably comprises an off heat recovery stage; more preferably the off heat recovery stage is an Organic Rankine Cycle (ORC) stage.
[8] According to a second aspect, an integrated unit for the conversion of organic waste comprises i) a steam reforming unit A), the steam reforming unit A) having means for producing at least one steam reforming product gas stream from an organic waste feed; ii) a water gas shift reaction (WGS) unit B), the WGS unit B) having means for producing at least one WGS unit product stream from at least part of the steam reforming product gas stream; iii) a gas separation unit C), the gas separation unit C) having means for providing, from a feed of at least part of the WGS stage product stream, of c1) a hydrogen-containing stream comprising at least 98 percent by weight of hydrogen, and c2) a carbon-dioxide- containing stream; iv) a unit providing electrical energy D). the unit providing electrical energy D) having means for generating electrical energy from a feed of at least part of the c1) hydrogencontaining stream.