Ebara Corporation

Ube Industries, Inc.

Other

Mitsubishi Denki Kabushiki Kaisha

Masaaki Irie

Tetsuhisa Hirose

Kazuo Takano

Takahiro Oshita

Shosaku Fujinami

Hiroyuki Fujimura

Norihisa Miyoshi

Shuichi Nagato

Yoshio Hirayama

Toshio Fukuda

Kazuaki Watanabe

Chikao Goke

Nobuya Azuma

An ash melting system of the present invention includes a slagging combustion furnace () for melting ash into molten slag; and a slag separating apparatus () for bringing the molten slag () discharged from the slagging combustion furnace into contact with slag cooling water () to produce water-quenched slag (), and separating the water-quenched slag from the slag cooling water. The ash melting system further includes a gas blowing means for blowing air or inert gas () between a slag discharge port () of the slagging combustion furnace and the surface of the slag cooling water.

Ash fusing system, method of operating the system, and gasification fusing system for waste

An apparatus for treating wastes includes a fluidized bed reactor for partially combusting the wastes at a relatively low temperature, and a separate relatively high temperature reactor for separate gasification of gaseous material and char from the first gasification. This synthesis gas thus formed is cooled, subjected to a conversion operation in a converter to produce hydrogen.

Apparatus for treating wastes by gasification

A method and apparatus for treating wastes by gasification recovers useful resources including energy, valuables such as metals, and gases for use as synthesis gas for chemical industries or fuel. The wastes are gasified in a fluidized-bed reactor at a relatively low temperature. Gaseous material and char produced in the fluidized-bed reactor are introduced into a high-temperature combustor, and low calorific gas or medium calorific gas is produced in the high-temperature combustor at a relatively high temperature. The fluidized-bed reactor preferably is a revolving flow-type fluidized-bed reactor. The high-temperature combustor preferably is a swirling-type high-temperature combustor.

Method and apparatus for treating wastes by gasification

A semiconductor apparatus includes a wiring substrate and a semiconductor device to be mounted at a proper mounting position on the wiring substrate. The wiring substrate has two contact terminals in electrical contact with each other. The semiconductor device has two contact terminals in electrical contact with each other and two detection-utility terminals respectively in electrical contact with the contact terminals of the semiconductor device. The contact terminals of the wiring substrate are located at positions so that they come in electrical contact with the corresponding contacts of the semiconductor device.

Semiconductor apparatus with misalignment mounting detection

A method of manufacturing semiconductor chips includes adhering a sheet that is to be tensioned to a reverse side of a semiconductor wafer on a front side of which an integrated circuit has been formed; separating individual semiconductor chips from the semiconductor wafer by dicing the semiconductor wafer from the front side along dicing lines; applying a sealing resin layer of an uncured sealing resin on upper surfaces of the semiconductor chips and in gaps between adjacent semiconductor chips, with the individual semiconductor chips joined by the sheet, thereby sealing the semiconductor chips; and tensioning the sheet, thereby dividing the uncured sealing resin layer into separate pieces along the dicing lines.

Method of manufacturing semiconductor chips

A method and apparatus for treating wastes by two-stage gasification recovers metals or ash content in the wastes in such a state that they can be recycled, and gases containing carbon monoxide (CO) and hydrogen gas (H ) for use as synthesis gas for ammonia (NH ) or production of hydrogen gas. The wastes are gasified in a fluidized-bed reactor at a low temperature. Then, gaseous material and char produced in the fluidized-bed reactor are introduced into a high-temperature combustor, and gasified at a high temperature and ash content is converted into molten slag. After water scrubbing and a CO conversion reaction, the gas is separated into H and residual gas. The residual gas is then supplied to the fluidized-bed reactor as a fluidizing gas.

In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650&deg; C. at a filtration velocity of 1-5 cm/sec under a pressure of from &minus;5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.

Heat recovery system and power generation system

The present invention relates to a method for treating solid wastes such as refuse-derived fuel or biomass wastes by pyrolysis gasification in a fluidized-bed gasification furnace,and then high-temperature combustion in a melting furnace,A primary combustion in a fluidized-bed,of the gasification furnace is carried out at a temperature of 600&plusmn;50&deg; C., a secondary combustion in a freeboard,of the gasification furnace is carried out at a temperature of 725&plusmn;75&deg; C., and a tertiary combustion in the melting furnace,is carried out at a temperature higher than a fusion temperature of ashes by 50 to 100&deg; C. An oxygen ratio (a ratio of an amount of oxygen supplied for combustion to a theoretical amount of oxygen for combustion) in the primary combustion is in the range of 0.1 to 0.3, an oxygen ratio in the secondary combustion is in the range of 0.05 to 0.1, an oxygen ratio in the tertiary combustion is in the range of 0.9 to 1.1, and a total oxygen ratio is about 1.3.

Method for fusion treating a solid waste for gasification

In an improved system for recovering heat from a combustion gas produced by burning wastes, the combustion gas or combustible gas produced by partial burning of the wastes subjected to dust filtration in a temperature range of 450-650.degree. C. at a filtration velocity of 1-5 cm/sec under a pressure of from -5 kPa (gage) to 5 MPa before heat recovery is effected. The dust filtration is preferably performed using a filter medium which may or may not support a denitration catalyst. Heat recovery is preferably effected using a steam superheater. The dust-free gas may partly or wholly be reburnt with or without an auxiliary fuel to a sufficiently high temperature to permit heat recovery. The combustion furnace may be a gasifying furnace which, in turn, may be combined with a melting furnace. If desired, the reburning to a higher temperature may be performed under pressure and the obtained hot combustion gas is supplied to a gas turbine to generate electricity, followed by introduction of the exhaust gas from the gas turbine into a steam superheater for further heat recovery. The system can raise the temperature of superheated steam to a sufficient level to enhance the efficiency of power generation without possibility of corrosion of heat transfer pipes by the combustion gas or combustible gas.

Heat recovery system and power generation system for wastes

A method of treating wastes includes partially combusting the wastes in a fluidized bed reactor at a relatively low temperature followed by separate gasification of gaseous material and char from the first gasification in a separate relatively high temperature reactor. This forms synthesis gas that is cooled, subjected to a conversion operation to produce hydrogen.

Growing community of inventors

Tokyo, Japan

Masaaki Irie