GAS CHEMICAL PLANT FOR HYDROGEN PRODUCTION WITH OXYFUEL COMBUSTION AND CARBON DIOXIDE CAPTURE Russian patent published in 2022 - IPC C01B3/36 B01D53/62 

FIELD: petrochemicals.

SUBSTANCE: invention relates to the field of petrochemicals and can be used in the production of hydrogen on organic fuel with low emissions of toxic substances and greenhouse gases. The gas chemical plant for the production of hydrogen with oxygen combustion of fuel and capture of carbon dioxide contains a natural gas purification unit 1, the output of which is connected in parallel with the compressor 2 and with the first inlet of the combustion chamber 7, the first 3, the second 10 and the third 13 surface heat exchangers with hot and cold coolant circuits. The output of the compressor 2 is connected to the inlet of the cold gas circuit of the coolant 5 of the first surface heat exchanger 3, and its outlet and the outlet of the cold water circuit of the coolant 12 of the second surface heat exchanger 10 are connected in parallel with the inlet of the steam reformer 6, the first outlet of which is connected in series with the hot gas circuit of the coolant 4 of the first surface heat exchanger 3, hot gas circuit of the coolant 11 of the second surface heat exchanger 10, cooler 19, high-temperature reactor 20, condenser 21, variable pressure adsorber 22 connected to the second inlet of the combustion chamber 7. The gas chemical plant also includes an air compressor 9, a pump 16, a cooler-separator 17 connected to a multi-stage compressor with intermediate cooling 18. The gas chemical plant is equipped with an oxygen-producing air separation plant 8, the inlet of which is connected to the air compressor 9, and the outlet is connected to a third inlet combustion chamber 7. The outlet of the cooler-separator 17 is connected in parallel with the fourth inlet of the combustion chamber 7.

EFFECT: invention makes it possible to improve the environmental friendliness of the hydrogen production process by reducing carbon dioxide emissions and increasing its capture.

1 cl, 1 dwg