Patent FR-2982175-A1 (FR)
Title: Installation, useful for treating biogas, comprises enclosure sealing vent containing treating load, input valve, output valve, supporting unit placed in movement with load in enclosure, and unit for circulating biogas flow through load
Inventor: SPILLEMAECKER MICHEL
IPC: B01D53/52
Filed: 2011-11-07
Abstract: The installation comprises an enclosure (1) sealing a vent containing a treating load, a biogas input valve, a biogas output valve, a supporting unit (7) placed in movement with the load in the enclosure, and an unit (10) for circulating a biogas flow through the treating load. The load comprises 75-99 wt. % of blast-furnace slags and 1-20 wt.% of products of load and additives. The installation further comprises: a unit for measuring and/or controlling input and/or output gas pressure; and a unit for measuring and/or controlling physical or chemical parameters of the flow of gas. The installation comprises an enclosure (1) sealing a vent containing a treating load, a biogas input valve, a biogas output valve, a supporting unit (7) placed in movement with the load in the enclosure, and an unit (10) for circulating a biogas flow through the treating load. The load comprises 75-99 wt. % of blast-furnace slags and 1-20 wt.% of products of load and additives. The installation further comprises: a unit for measuring and/or controlling input and/or output gas pressure; a unit for measuring and/or controlling physical or chemical parameters of the flow of gas; an evacuation valve for evacuating liquids by gravity or an active system of evacuation of the liquids; a supply (5) located below the support and/or a gas distribution unit (12) placed within the treating load, where outlet of biogas is placed in top part of the distribution unit; a first introducing hopper that introduces the treating load and is located in an upper portion of the enclosure; and a first evacuating hopper that evacuates the treating load in a water-tight manner and is located in a lower portion of the enclosure. The treating load is static, and the supporting unit comprises grid or plate support and is placed in a lower part of the enclosure. The treating load occupies a volume of about 15 m 3>. The treating load is capable of moving in the enclosure. The treating load and the gas are evolved counter-currently or co-currently. The enclosure is approximately cylindrical, and an axis of the enclosure is approximately vertical. The circulation unit comprises a plate or a series of n-perforated or superimposed grills supporting the load, optionally one or a series of N agitators or scrapers, wings or rakes actuated by a motor around the vertical central axis, optionally a distributor of load as a rake agitator located in the upper portion of the enclosure and/or an anchor located in the lower portion of the enclosure. The enclosure comprises a mixing tunnel approximately cylindrical comprising a second introducing hopper for introducing the treating load into a upper part of the tunnel and a second evacuating hopper that evacuates the load in a water-tight manner and is located at a lower part of the tunnel. The enclosure is primarily cylindrical and mobile around a horizontal axis and comprises the load introducing hopper at one end and the evacuation hopper at another end. An independent claim is included for a method for purifying gas.