Gas inlet (13) and gas outlet (16) provide for gas purging.

The test gas shall be exhaust gas of constant opacity or a light-absorptive gas of a gravimetric density similar to that of exhaust gas.

Gases that can be used include noble gases such as helium or combinations of noble gases.

A gas-barrier member is provided which has gas-barrier properties even when having a low gas-barrier substance content.

Gases (petroleum), gas concn. reabsorber distn.

Of which: derived gas (these are manufactured gases

Of which: Derived gas (these are manufactured gases

Gases (petroleum), oil refinery gas distillation off; Refinery gas

Gases (petroleum), oil refinery gas distillation off; Refinery gas

Further the temperature of the influx gases (Tein) and the discharge gases (Taus) and specifically the oxygen content of the blown-in oxidation gas (5) as well as the oxygen content of the discharge gases is monitored.

A fluidized bed introduces process gases (118) which may include carburizing or nitriding gases.

The gas exhaust opening (56) is connected to a gas outlet (58).

Gases other than air can be used during the toxic gas elimination process, such as inert gases with fire-retardant properties or other gases with other properties.

The waste gas can be any waste gas containing mercury gases or mercury vapors, such as combustion flue gas and waste gases generated in various chemical and industrial processes.

Suitable reductants include carbonaceous materials or hydrogen bearing gases such as natural gas or synthesis gas.