Primary Gas

Primary Gas

 

(or semicoking gas), a combustible gas formed upon low-temperature dry distillation of solid fuels. The composition and yield of primary gas depend on the nature of the fuel used and on the semicoking method.

The main combustible components of primary gas are methane (20–50 percent), hydrogen (15–20 percent), carbon monoxide (7–10 percent), and unsaturated hydrocarbons (7–15 percent). The noncombustible inert component is carbon dioxide, the content of which may reach 50 percent in the distillation of brown coals and peat. The yield of primary gas varies from 80 to 100 cu m per ton and the heat of combustion ranges from 8 × 103 to 34 × 103 megajoules per cu m, or 2,000–8,000 kcal per cu m. Primary gas is usually used at its site of production as a gaseous fuel.

References in periodicals archive ?
When considering gas flow calibrators, be sure to look for an instrument that provided accurate, reliable, primary gas flow readings.
We are working hard on the primary gas supply grid, and the call for bids to construct the secondary and tertiary grid, that is, the grid to supply gas to households and businesses is currently open.
Earlier this year, the global atmosphere concentration of carbon dioxide, a primary gas responsible for global climate change, had surpassed 400 parts per million (https://www.
This forecast which is estimated by GECF Global Gas Model, the development of which was recently completed suggest that primary gas demand could increases by 58% over the next 25 years.
It has also become an upstream gas supplier, presently operating 7 CNG primary gas filling stations, with 3 LNG processing plants under construction.
Through that grid, Louisiana has been a primary gas supplier to markets across the continent as traders tapped countless gas production fields and pipeline interconnections, and managed their business with a vast complex of natural gas storage facilities that dot the state.
Carbon dioxide from fossil fuels is the primary gas causing global warming but methane has an effect more than 20 times greater.
Three primary gas zones totalling 175' have been penetrated while drilling.
The original Cheal facility, which was constructed at a cost of approximately $25 million by the previous operator, now has expanded oil processing capability, gas-liquids' extraction capabilities, and a new 11km pipeline to New Zealand's primary gas transmission pipeline, all at an additional cost of ~$30 million.
Work also included VSM drilling and setting, cased road crossings, launcher and receiver, and modifications to the fields Primary Gas Handling Facility.
This step is known as the primary gas penetration that occurs under imposed gas pressure.
According to MS infrastructure, Southern Star is the primary gas transmission and natural gas storage facility provider for several major U.