2496. ---------------. [ODELL, W. W.] Re-Forming Natural Gas in Water-Gas Generators, With Substantially Complete Elimination of Entrained Carbon. Bureau of Mines Rept. of Investigations 2973, 1929, 10 pp.; Chem. Abs., vol. 24, 1930, p. 710.
When steam and a hydrocarbon gas are admitted to the incandescent fuel bed of a standard water-gas generator, a re-formed gas is produced, which is comprised chiefly of H2, CO, and CH4. When the amount of steam is too low, C resulting from the cracking of the hydrocarbons is entrained in the gas. A higher temperature is required to crack CH4 than the higher hydrocarbons. The composition of the re-formed gas can be controlled, and the specific gravity and heating value can be adjusted as necessary. Increased air blasting (increased temperatures) decreases CH4 content and increases H2. The low limit is about 10% CH4 and 60% H2, giving a gas of 350 B.t.u. heating value. Relative amounts of steam and hydrocarbon influence the H2:CO ratio. The low limit is substantially the same as that for water gas, 1.2:1; the upper limit without entrained C is about 3:1. Less heat is required for the generation of a unit vol. of reformed gas than straight water gas; hence less generator fuel is used. Gas making capacity is increased materially by a blow run. Gives operating data.