Processes of Multi-production Products and Utilities

Anita Kovač Kralj

Abstract


Abstract: Process production of the different products should be more economical. The fact is we target that more products are being produced from raw materials. The basic primary goal is multi-production product processes, and the secondary goal is to save raw materials. During an oil crisis, the price of natural gas is too high, therefore the amount of natural gas could be reduced by 30 % by using cheaper raw materials or waste material. This paper aims at replacing natural gas by 30 % during the methanol process using CO2, which is separated from flue gas by using a pressure swing adsorption (PSA) column. The existing methanol production process can be enlarged by simultaneous structuring, such as selecting the optimal mass flow of both products (methanol and hydrogen), and the heat flow rate of steam production, using an NLP (nonlinear programming) model. Optimal methanol and hydrogen conversion can take place during this operation, by applying optimal parametric data within a reformer unit (temperature = 840oC and pressure = 8 bar), using 71% natural gas and 29% pure CO2 separated from flue gas.
Key words: Methanol production; Hydrogen production; Flue gas, CO2 separation; Mathematical model; Nonlinear programming

Keywords


Methanol production; Hydrogen production; Flue gas, CO2 separation; Mathematical model; Nonlinear programming

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References


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DOI: http://dx.doi.org/10.3968/j.est.1923847920110102.004

DOI (PDF): http://dx.doi.org/10.3968/g1607

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