A method for predicting biomass fuel quality and its application

Abstract

The invention discloses a biomass fuel quality prediction method and applications thereof. The method comprises: (1) mixing biomass and water, and respectively reacting at a temperature t and 250 DEGC to obtain hydrothermal carbon Ct and hydrothermal carbon C250; (2) granulating the hydrothermal carbon Ct, the hydrothermal carbon C250 and the biomass under the same conditions to obtain hydrothermal carbon particles Ct, hydrothermal carbon particles C250 and biomass particles; (3) determining the content FC250 of the fixed carbon of the hydrothermal carbon particles C250, determining the content FCt of the fixed carbon of the hydrothermal carbon particles Ct, determining the content FCm of the fixed carbon of the biomass particles, and establishing a prediction model of a hydrothermal carbonization degree factor FCI; and (4) predicting the fuel quality of the biomass according to the calculated FCI value. According to the invention, by using the method, the biomass energy quality can be rapidly and precisely measured so as to improve the fuel quality and reduce the product cost.

Description

technical field [0001] The invention belongs to the field of biomass resource utilization, in particular to a method for predicting biomass fuel quality and its application. Background technique [0002] Hydrothermal carbonization (HTC) is a pretreatment technology for treating biological waste by autogenous pressure at relatively low temperature (180-250°C). The effectiveness of the HTC is high due to the unimpeded transfer of heat and mass. In particular, high-moisture biological waste such as sewage sludge, kitchen waste, microalgae, and animal manure can be treated by HTC without pre-drying. HTC causes the hydrolysis of cellulose, hemicellulose, and lignin to obtain biochar with lower H / C and O / C ratios, which is beneficial to improve the quality of hydrothermal charcoal as a solid fuel. At the same time, the grindability and hydrophobicity of biomass after HTC are improved, which is beneficial to the storage and transportation of biomass solid fuels. HTC is considere...

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Problems solved by technology

However, after HTC pretreatment, the energy consumption during granulation increased significantly, while the density and strength of hydrothermal charcoal granules decreased compared with untreated biowaste

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