Mohammad Bidar, director of engineering of the refinery, said construction of the unit began in July 2015 with 1,200 cubic meters/hour of capacity which has just come online.

He said the unit prevents waste of 8,000 tons/year of natural gas at the facility which buy itself heavily contributes to reduction of emissions in the big city o Tehran.

Tehran Refinery, with 50 years of history, used natural gas as cover gas in its operations before the unit was launched. This by itself caused so much pollution.