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 ?
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.
Natural gas production also increased slightly during this period despite that fact that the Company's primary gas producing field has been largely shut in since November.
Prime Minister Gruevski announced at least 25 new foreign investments, continuation of the road infrastructure investments, a start of the construction of the gas supply network from Kumanovo to Stip, and providing conditions for the remaining primary gas grid across the country.
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.
For the past 15 years, the company has been attempting to develop bio-technological platforms that would use the enzyme along with a variety of solvents to remove carbon dioxide--the primary gas responsible for global climate change--from industrial smokestacks.
He said also that DEFA, which is also responsible for developing the natural gas network inland, has already mapped out the primary gas route.