Comparative study of fuel gas production for SOFC from steam and supercritical-water reforming of bioethanol

Abstract Supercritical water gasification of weak sulfur-free black liquor (BL) was performed in a batch autoclave at temperatures between 430°C and 470°C, pressure between 24 and 27 MPa and residence time between 2 and 63 min. Results show that the gas produced was a mixture of mainly hydrogen, methane, and carbon dioxide. Maximum conversion was achieved at 470°C and 60 min. Energy recovery (ER, ratio between the energy in the gas and in the initial BL) was 46%. Thirty-four percent of the carbon and 53% of the hydrogen initially present in BL were converted into gases. Nearly 15% of initial organic carbon remains in the liquid phase and consists mainly of phenolic compounds, which are stable under those conditions. A higher temperature is needed to convert all the organic carbon. Thermodynamic equilibrium should be reached at 700°C leading to a complete conversion and a better efficiency. Sodium recovery is close to typical kraft recovery value and compatible with causticizing.

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Fuel Gas Production from Organic Wastes by Low Capital Cost Batch Digestion

Biogas Technology, Transfer and Diffusion ◽

10.1007/978-94-009-4313-1_51 ◽

1986 ◽

pp. 429-436

Author(s):

Donald L. Wise ◽

Alfred P. Leuschner ◽

Ralph L. Wentworth ◽

Mostafa A. Sharaf

Keyword(s):

Capital Cost ◽

Gas Production ◽

Organic Wastes ◽

Fuel Gas

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Studies on Fuel Gas Production from Organic Wastes with Bioconversion in Japan

Science for Better Environment ◽

10.1016/b978-0-08-021948-6.50100-x ◽

1977 ◽

pp. 686-694

Author(s):

Y. Osada ◽

T. Takatani ◽

M. Takemura ◽

T. Tejima

Keyword(s):

Gas Production ◽

Organic Wastes ◽

Fuel Gas

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Numerical Comparison of a Combined Hydrothermal Carbonization and Anaerobic Digestion System with Direct Combustion of Biomass for Power Production

Processes ◽

10.3390/pr8010043 ◽

2020 ◽

Vol 8 (1) ◽

pp. 43 ◽

Cited By ~ 10

Author(s):

Mohammad Heidari ◽

Shakirudeen Salaudeen ◽

Omid Norouzi ◽

Bishnu Acharya ◽

Animesh Dutta

Keyword(s):

Anaerobic Digestion ◽

Rankine Cycle ◽

Hydrothermal Carbonization ◽

Gas Production ◽

Numerical Comparison ◽

Fuel Gas ◽

Operational Conditions ◽

Unit Process ◽

Direct Combustion ◽

Balance Analysis

Two of the methods for converting biomass to fuel are hydrothermal carbonization (HTC) and anaerobic digestion (AD). This study is aimed at designing and analyzing two scenarios for bioenergy production from undervalued biomass (sawdust). In one of the scenarios (direct combustion or DC), raw biomass is burned in a combustor to provide the heat that is required by the Rankine cycle to generate electricity. In the other scenario (HTC-AD), the raw biomass first undergoes HTC treatment. While the solid product (hydrochar) is used to produce power by a Rankine cycle, the liquid by-product undergoes an AD process. This results in fuel gas production and it can be used in a Brayton cycle to generate more power. Energy and mass balance analysis of both scenarios were developed for each unit process by using Engineering Equation Solver (EES). The required data were obtained experimentally or from the literature. The performances of the proposed systems were evaluated, and a sensitivity analysis was presented to help in finding the best operational conditions.

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ANN modeling of fuel gas production from low-grade residual oil

Petroleum Science and Technology ◽

10.1080/10916466.2018.1542442 ◽

2019 ◽

Vol 37 (3) ◽

pp. 305-309 ◽

Cited By ~ 1

Author(s):

Yaya Wang ◽

Wei Gao

Keyword(s):

Gas Production ◽

Low Grade ◽

Residual Oil ◽

Fuel Gas ◽

Ann Modeling

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