Title:
【発明の名称】高カロリー都市ガスの製造方法
Document Type and Number:
Japanese Patent JP2550217
Kind Code:
B2
Abstract:
PURPOSE:To easily obtain a city gas of high calorific value in a short time with simple equipment by hydrogenating sulfur compounds in feedstock hydrocarbon, removing them by adsorption, reforming the desulfurized gas into a methane-rich gas, and mixing it with liquefied petroleum gas. CONSTITUTION:Feedstock hydrocarbon 11 (e.g. liquefied petroleum gas) is pumped by a pump 12, mixed with hydrogen 26, vaporized by a preheater 13 and a superheater 14, and introduced into a hydrodesulfurization tower 15, where it is hydrogenated in the presence of a hydrogenation catalyst and then sulfur compounds in the gas are removed by adsorption. The obtained desulfurized gas is mixed with process steam 16, and after raising the temperature thereof by a heating furnace 17, the mixture is introduced into a reforming tower 18, where it is reformed into a methane-rich gas in the presence of a steam-reforming catalyst. After heat recovery therefrom by a steam superheater 19, a preheater 20, a vaporizer 21, etc., the obtained methane-rich gas is cooled by a cooler 22. After removing moisture therefrom by a moisture separator 23, etc., it is mixed with liquefied petroleum gas 28 by a mixer 27 to give a city gas 29 having a calorific value as high as 11,000-14,000kcal/m<3>N and a combustibility rating of 12A or 13A.
Inventors:
MARUYAMA KAZUTAKA
SAITO TOSHISHIGE
SAITO TOSHISHIGE
Application Number:
JP28355590A
Publication Date:
November 06, 1996
Filing Date:
October 23, 1990
Export Citation:
Assignee:
HITACHI SEISAKUSHO KK
HITACHI TEKUNO ENJINIARINGU KK
HITACHI TEKUNO ENJINIARINGU KK
International Classes:
B01J23/40; B01J23/06; B01J23/72; B01J23/74; B01J23/755; B01J23/85; B01J23/88; C07B61/00; C10J1/20; C10L3/00; C10L3/06; C10L3/10; C10L3/12; (IPC1-7): C10L3/10; C10L3/06; C10L3/12
Other References:
CATALYST HANDBOOK=1989
Attorney, Agent or Firm:
Masami Akimoto