| Patent application number | Description | Published |
|---|
| 20090140195 | Gate valve - An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily. A gate valve installed in a transport line for transporting fluid containing particulate material at a coal gasification plant includes a valve box having an inlet portion and an outlet portion in which a channel constituting a part of the transport line is formed; a valve unit, provided between the inlet portion and the outlet portion, which extends in an opening-and-closing direction orthogonal to an axial direction of the channel, and which is movable in the opening-and-closing direction; a wedge plate provided between the valve unit and the inlet portion so as to extend in the opening-and-closing direction; and a guide plate provided between the valve unit and the outlet portion so as to extend in the opening-and-closing direction. Areas between the valve unit and the wedge plate and between and the valve unit and guide plate are sealed by means of surface contact. | 06-04-2009 |
| 20100126067 | BURNER FOR HIGHLY CAKING COAL, AND GASIFIER - In a burner for highly caking coal in which a solid fuel channel and a gasifying agent channel are provided in a double pipe structure, the temperature increase of the particles of a highly caking solid fuel and the resulting fusion and expansion of the particles are prevented or suppressed, thereby enabling a stable operation of the gasifier. In a burner for highly caking coal in which a solid fuel channel that is attached for gasifying a highly caking solid fuel that has been pulverized into particles and that supplies the solid fuel into the gasifier, and a gasifying agent channel that supplies a gasifying agent into the gasifier are provided in a double pipe structure, the burner has a triple pipe structure including a cooling water channel that circulates cooling water between the solid fuel channel and the gasifying agent channel, and the cooling water is recovered after use. | 05-27-2010 |
| 20100175364 | INTEGRATED COAL GASIFICATION COMBINED CYCLE FACILITY - An integrated coal gasification combined cycle facility is provided that can prevent a reduction in power generation efficiency even when low-grade coal having a relatively-high moisture content is used. Included are: a gasification section that gasifies supplied coal; a gas power generation section that generates power by using gas supplied from the gasification section; a steam power generation section that generates power by using the heat of exhaust gas discharged from the gas power generation section; and a coal drying unit that dries the coal by using exhaust heat discharged from the steam power generation section and that supplies the dried coal to the gasification section. | 07-15-2010 |
| 20100180502 | BURNER FOR HIGHLY CAKING COAL, AND GASIFIER - In a burner for highly caking coal in which a solid fuel channel that is attached penetrating through a surrounding wall of a gasifier for gasifying a highly caking solid fuel that has been pulverized into particles and that supplies the solid fuel into the gasifier by gas flow transportation, and a gasifying agent channel that supplies a gasifying agent into the gasifier are provided, a blockage detection unit that detects a blockage situation of the solid fuel channel is provided, and a process for reducing the temperature of the solid fuel is performed when the blockage detection unit detects a predetermined blockage situation. | 07-22-2010 |
| 20110116979 | COAL GASIFIER - Provided is a coal gasifier enabling a reduction in size of a shift reactor by generating hydrogen-rich gasified coal gas. In a coal gasifier generating gasified coal gas by a gasification reaction proceeding in a furnace fed with a gasifiable raw material, such as coal, and a gasifying agent, at least one of water and steam is fed to the furnace as a material accelerating a hydrogen-generating reaction that proceeds simultaneously with the gasification reaction. | 05-19-2011 |
| 20110154788 | APPARATUS FOR BACKWASHING FILTER - The reliability of backwashing valves constituted of first backwashing valves and second backwashing valves is ensured. A first backwashing valve (backwashing-gas rear valve) ( | 06-30-2011 |
| 20110265696 | SLAG-MELTING BURNER APPARATUS - It is possible to prevent a phenomenon by which the wall temperature of an outer cylinder rises abruptly as a layer of steam covers the inner circumferential surface of the outer cylinder and therefore decreases the heat transfer coefficient thereof, thus preventing a heat damage to the outer cylinder. Also prevented is burnout of the burner resulting from insufficient cooling due to variations in cooling efficiency at a leading end of the burner. A leading end located in a two-stage entrained-flow bed coal gasifier has a double-walled structure including an outer cylinder and an inner cylinder, and cooling water for cooling the leading end is supplied through an interior of the inner cylinder to cool the leading end and is then returned to a base end through a space formed between the outer cylinder and the inner cylinder. The space formed between the outer cylinder and the inner cylinder has a smaller channel area than the interior of the inner cylinder, and a swirling flow along a guide formed on an outer circumferential surface of the inner cylinder and a substantially linear flow in a longitudinal direction of the outer cylinder and the inner cylinder are applied to the cooling water returned to the base end through the space formed between the outer cylinder and the inner cylinder. | 11-03-2011 |
| 20110314814 | HYDROGEN PRODUCTION SYSTEM AND POWER GENERATION SYSTEM - The amount of high-temperature steam supplied from external equipment is reduced. Provided is a hydrogen production system ( | 12-29-2011 |
