Production of Steam for Reacting in Chemical Processes Producing Carbon Dioxide Containing Gases.

摘要

1,168,726. Steam-reforming hydrocarbons. POWER-GAS CORP. Ltd. 30 July, 1968 [1 Aug., 1967], No. 35316/67. Heading C5E. Steam for use in hydrocarbon reformingprocess (at 14) is produced by condensing, at 21, 23, unreacted steam in the gases from the process and passing hot water with CO 2 in solution from the condensers 21, 23 to a stripping column 2 for counter-current flow to steam raised in a unit 1, the stripped water being passed as feedwater to the unit 1, and steam and CO 2 being passed from the column 2 to the reactor 14 via a superheater 8. Condensing at 21 is by direct contact with demineralized water supplied at 36 and water from a separator 27 which follows an indirect heat exchanger 23. Hot combustion gases from 14 traverse the superheater 8 and a heat exchanger 38 which, like a heat exchanger 19, is connected by water tubes 42, 43 with the unit 1. A dosing chemical, e.g. NaOH, NaSO 3 , hydrazine, may be supplied in aqueous solution at 44, and steam for heating may be withdrawn at 45 from the column 2.