A portable system for burning undesired gases, for example in the form of hydrocarbons or ammonia, - having at least one intake connectable to a pipe or hose and through which the gas to be burned can be fed into the system, - having a burner unit for burning the undesired gases, having an exhaust pipe connected to the burner unit for alternatively bringing into an operating position or a transport position, having a flow channel by means of which the inlet is fluidically connected to the burner unit, having a fan associated with the flow channel, by means of which the gas to be burned can be transported from the inlet to the burner unit via the flow channel, having an electrical generator for generating the electrical energy required for operating the system, - having a fuel tank for storing the fuel required for operating the electrical generator, - having a controller and/or regulator for controlling and/or regulating the system, and - having a carrier platform on which said components of the system are mounted, so that the system is portable in the form of a single unit, - the system further comprising a support gas tank connected to the support platform for a support gas supporting the combustion of the undesired gases in the burner unit, - the support gas tank being fluidically connected to the burner unit, - the support gas tank comprising a safety valve, and - a gas barrier extending between the support gas tank at one side and the power generator and the combustion unit at the other side, preventing support gas unintentionally escaping from the support gas tank or the safety valve from making contact along the direct path with the combustion unit or the power generator, characterized in that the gas barrier is a wall protruding upward diagonally or vertically from the support platform and standing in the way of a potential support gas flow from the support gas tank to the combustion unit or to the power generator and thereby prevents said flow. - having at least one intake connectable to a pipe or hose and through which the gas to be burned can be fed into the system, - having a burner unit for burning the undesired gases, having an exhaust pipe connected to the burner unit for alternatively bringing into an operating position or a transport position, having a flow channel by means of which the inlet is fluidically connected to the burner unit, having a fan associated with the flow channel, by means of which the gas to be burned can be transported from the inlet to the burner unit via the flow channel, having an electrical generator for generating the electrical energy required for operating the system, - having a fuel tank for storing the fuel required for operating the electrical generator, - having a controller and/or regulator for controlling and/or regulating the system, and - having a carrier platform on which said components of the system are mounted, so that the system is portable in the form of a single unit, - the system further comprising a support gas tank connected to the support platform for a support gas supporting the combustion of the undesired gases in the burner unit, - the support gas tank being fluidically connected to the burner unit, - the support gas tank comprising a safety valve, and - a gas barrier extending between the support gas tank at one side and the power generator and the combustion unit at the other side, preventing support gas unintentionally escaping from the support gas tank or the safety valve from making contact along the direct path with the combustion unit or the power generator,