| Abstract [eng] |
The final master's project aims to use green hydrogen to optimize the methane conversion process, increase efficiency, reduce carbon dioxide emissions and transition to more sustainable production. Green hydrogen is produced by electrolysis using renewable energy. Source analysis shows that alkaline electrolysis is the most effective method for industrial application. Calculations were performed using the chemical process modeling program Aspen PLUS. The methane conversion production volumes were reduced and the electrolyzer production volume increased in parallel, to maintain hydrogen production at 6198,50 kmol/h. The modeling results revealed that to reduce natural gas consumption by 400 kmol/h, a 121,5 MW electrolyzer block system would be required. A technological scheme has been drawn and described in detail. A drawing and description of the technological upgrade have been provided. The reconstruction is being carried out in the village of Jonalaukis, on the territory of AB Achema. The land plot occupied by the structure is 2,04 ha. A cross–section of the building, a plan of the plot and the building from above were drawn. In addition, economic calculations were performed to substantiate the payback of the reconstruction. The discounted payback period of the investment is 4,76 years. The environmental impact, occupational risks, safety and health of workers were assessed. The fire safety requirements for the electrolyzer premises were described and an evacuation plan was prepared. |
