Fugitive gas

An element that is also found in natural gas represents the world s best source for the element and that is helium which, in some U.S. and polishgas supplies, can reach 7% by weight. This valuable gas is collected by liquefaction of the natural gas, which leaves the remaining gas significantly enriched in helium. Helium originates from radioactive decay and, because it is a fugitive gas and can escape the earth s atmosphere, it is not practical to recover helium from the air. 

Manufacturer Gas source FujiKasui Eng Acid plant IHI IHI Acid plant tail gas and smelting plant fugitive gas... 

Oil- or gas-fired boilers >45 metric tons/day Kiln and clinker cooler Fugitive emission points Process equipment Process equipment Dryers, etc/... 

Carbon black (most emissions from exit gas stream from baghouse, some fugitive particulate)... 

Chlorine is a highly toxic gas, and strict precautions are necessary to minimize risk to workers and possible releases during its handling. Major sources of fugitive air emissions of chlorine and hydrogen are vents, seals, and transfer operations. 

Baghouses are preferred over venturi scrubbers for controlling particulate matter emissions from loading and pushing operations because of the higher removal efficiencies. ESPs are effective for final tar removal from coke oven gas. Stack air emissions should be monitored continuously for particulate matter. Alternatively, opacity measurements of stack gases can suffice. Fugitive emissions should be monitored annually for VOCs. 

Air emissions from coking operations include the process heater flue gas emissions, fugitive emissions, and emissions that may arise from the removal of the coke from the coke drum. The injected steam is condensed and the remaining vapors are typically flared. Wastewater is generated from the coke removal and cooling operations and from the steam injection. In addition, the removal of coke from the drum can release particulate emissions and any remaining hydrocarbons to the atmosphere. 

Air emissions from hydrotreating may arise from process heater flue gas, vents, and fugitive emissions. Figure 6 provides a simplified flow diagram. 

Crude Oil Desalting Heater stack gas (CO, SO, NO, hydrocarbons and particulates), fugitive emissions (hydrocarbons). 

Atmospheric Distillation and Vacuum Distillation Heater stack gas (CO, SO, NO, hydrocarbons and PM), vents and fugitive emissions (hydrocarbons) Steam ejector emissions (hydrocarbons), heater stack gas (CO, SO, NO, hydrocarbons and PM), vents and fugitive emissions (hydrocarbons). 

The major source of fugitive emissions from a gas compressor cylinder is the piston rod packing. Other sources of fugitive emissions are around the cylinder valve covers, unloader covers, unloader actuator packing, and clearance pocket gasket and actuator packing. 

The fugitive species SO was first identified by its ultraviolet spectrum in 1929 but it is thermodynamically unstable and decomposes completely in the gas phase in less than I s. It is formed by reduction of SOn with sulfur vapour in a glow discharge and its spectroscopic properties... 

---