Utilisation of reactor heat in methanol synthesis to reduce compressor duty––application of power cycle principles and simulation tools

This article presents the concept of renewable methanol production in the gas turbine cycle. As part of the work, an analysis was performed, including the impact of changing the parameters in the methanol reactor on the obtained values of power, yield and efficiency of the reactor, and chemical conversion. The aim of this research was to investigate the possibility of integrating the system for the production of renewable methanol and additional production of electricity in the system. The efficiency of the chemical conversion process and the efficiency of the methanol reactor increases with increasing pressure and decreasing temperature. The highest efficiency values, respectively η = 0.4388 and ηR = 0.3649, are obtained for parameters in the reactor equal to 160 °C and 14 MPa. The amount of heat exchanged in all exchangers reached the highest value for 14 MPa and 160 °C and amounted to Q˙ = 2.28 kW. Additionally, it has been calculated that if an additional exchanger is used before the expander (heating the medium to 560 °C), the expander’s power will cover the compressor’s electricity demand.

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“…The calculation methodology was taken from the authors' previous research on methanol production presented in [26,27].…”

Section: Methodology Of Calculationsmentioning

confidence: 99%

“…Methanol is produced by catalytic hydrogenation of carbon monoxide and/or carbon dioxide in a methanol synthesis reactor. In the system behind the reactor there is a gas turbine in which high operating pressure generated electricity [17,26].…”

Section: Introductionmentioning

confidence: 99%

Methanol Production in the Brayton Cycle

et al. 2022

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“…Table 5 describes some attributes of this problem. The CBR tool has identified two potential solutions to this problem: a unit from a methanol (Greef et al, 2002) and another one for producing steam. Table 6 summarises main features of problem description for both cases.…”

Section: Problem 1: Cooling Of the Process Streammentioning

confidence: 99%

A systematic approach: combining process optimisation exergy analysis and energy recovery for a better efficiency of industrial processes

Gourmelon

Hétreux

Floquet

2017

IJEX

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“…Then, separation at lower pressure and temperature follows and this pressure change can be used to drive a turbine, coupled to an electricity generator. The turbine uses process gas as a working fluid [6]. The power cycle is described as the ''Brayton cycle''.…”

Section: Gas Turbine Systemmentioning

confidence: 99%