Hydrothermal carbonization of kraft lignin : process parameters effect
Salcedo Puerto, Orlando (2021)
Diplomityö
2021
School of Energy Systems, Energiatekniikka
Kaikki oikeudet pidätetään.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2021060132642
https://urn.fi/URN:NBN:fi-fe2021060132642
Tiivistelmä
Hydrothermal carbonization (HTC) is a thermochemical process that by subjecting wet biomass to moderate temperatures (180 to 260 °C) under certain conditions, converts it into a solid carbon-like compound called biochar. HTC is a clean technology that allows waste to be disposed of in a sustainable way, without drawing on to landfills and contributing to green management within the energy industry, without the need for intensive use of energy for drying biomass, before or during the process.
This process can be used to create a wide variety of structured carbonaceous materials e.g. production of lignite substitutes, synthesis gas, liquid petroleum precursors and humus from the initial biomass, with a net generation of energy. This work focuses on the hydrothermal carbonization of lignin, in addition on the effects of its operational parameters such as temperature, residence time and concentration of recirculated process water on the final solid product.
This process can be used to create a wide variety of structured carbonaceous materials e.g. production of lignite substitutes, synthesis gas, liquid petroleum precursors and humus from the initial biomass, with a net generation of energy. This work focuses on the hydrothermal carbonization of lignin, in addition on the effects of its operational parameters such as temperature, residence time and concentration of recirculated process water on the final solid product.