Ihi Corporation

Electric Power Development Co., Ltd.

Raqualia Pharma Inc.

Shuzo Watanabe

Terutoshi Uchida

Toshihiko Yamada

Shuuhei Terushita

Tatsuya Yamagishi

Mikio Morita

Kaoru Shimada

Tadashi Inoue

Yoshimasa Arano

Shinji Watanabe

Toru Ishii

Yoshiyuki Iso

Mikiko Morita

Shinya Mouri

Nobuhiro Misawa

A pulverized coal burner for an oxyfuel combustion boiler which attains uniform combustion from a pulverized coal burner and which constrains a temperature rise of an oxygen injection nozzle is provided. The burner includes burner inner and outer cylinders arranged to penetrate a wind box and come close to a throat portion. A pulverized coal feed passage is provided between the burner inner and outer cylinders. A plurality of oxygen injection devices are arranged outwardly of the burner outer cylinder so as to directly feed oxygen ahead of the burner outer cylinder.

Pulverized coal burner for oxyfuel combustion boiler

The present invention relates to aryl substituted carboxamide derivatives of formula (I) or a pharmaceutically acceptable salt thereof, which have blocking activities of T-type calcium channels or voltage gated sodium channels as the tetrodotoxin-sensitive (TTX-S) blocker such as Naand Na, and which are useful in the treatment or prevention of disorders and diseases in which T-type calcium channels or voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which T-type calcium channels or voltage gated sodium channels are involved. 

Aryl substituted carboxamide derivatives as calcium or sodium channel blockers

Provided are a method and an apparatus of controlling an oxygen supply in an oxyfuel combustion boiler capable of attaining stable oxyfuel combustion even when properties of coal are changed. A boiler-brought-in oxygen density is obtained when coal with a fuel ratio measured by fuel measuring meansis burned stably with oxygen in a boilerso that a relationship between the fuel ratio and/or carbon content of the coal and the boiler-brought-in oxygen density is obtained and inputted in advance into the controller. When the coal is changed to the new kind of coal, a total amount of gases recirculated is regulated such that a boiler-brought-in oxygen density becomes accordance with a fuel ratio and/or a carbon content which is measured in advance for the new kind of coal.

Method and apparatus of controlling oxygen supply in oxyfuel combustion boiler

The present invention relates to aryl substituted carboxamide derivatives of formula (I) or a pharmaceutically acceptable salt thereof, which have blocking activities of T-type calcium channels or voltage gated sodium channels as the tetrodotoxin-sensitive (TTX-S) blockers such as Naand Na, and which are useful in the treatment or prevention of disorders and diseases in which T-type calcium channels or voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which T-type calcium channels or voltage gated sodium channels are involved. 

The present invention relates to acyl piperazine derivatives which have blocking activities of voltage gated sodium channels as the TTX-S channels, and which are useful in the treatment or prevention of disorders and diseases in which voltage gated sodium channels are involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which voltage gated sodium channels are involved.

Acyl piperazine derivatives as TTX-S blockers

In an oxygen mixer for an oxygen combustion boiler, circulating exhaust gas heated in a rotary preheater is mixed with oxygen. Resultant mixed gas is guided to a boiler furnace through a combustion gas duct having bends. At the bend closest to the rotary preheater in the combustion gas duct, an oxygen injection nozzle is arranged to have a plurality of injection ports for injection of oxygen into circulating exhaust gas.

Oxygen mixer for oxygen combustion boiler

In an apparatus of controlling an exhaust gas in an oxyfuel combustion boiler having the boilerprovided with burnersand a two-stage combustion port, a primary recirculation linethrough which pulverized coal obtained by a millis fed to the burnersof the boilerby the primary recirculating exhaust gas, a secondary recirculation linethrough which another portion of the exhaust gas in recirculation is fed to a wind boxof the boiler, an oxygen producer, a direct supply linethrough which a portion of oxygen produced by the oxygen produceris directly fed to the burnerand a secondary oxygen mixing linethrough which another portion of oxygen produced by the oxygen produceris fed to the secondary recirculation line, the apparatus comprises an oxygen supply linethrough which oxygen is fed to the two-stage combustion port of the boilerand a flow rate regulatorin the oxygen supply line for adjusting oxygen density.

Method and apparatus of controlling exhaust gas in oxyfuel combustion boiler

Provided are a method and an apparatus of controlling exhaust gas in an oxyfuel combustion boiler which can attain stable combustion of the boiler while an amount of unburned combustibles and a NOdensity in exhaust gas are maintained in their allowable ranges. A rate of supply of directly supplied oxygen to burnersto a total amount of oxygen produced by an air separation unitis regulated in an operating range where the NOdensity in the exhaust gas is below a NOx limit value and the amount of unburned combustibles in the exhaust gas is blow an unburned combustible limit value to thereby attain stable combustion of the oxyfuel combustion boiler.

Provided are a method and an apparatus of controlling a flow rate of a primary recirculating exhaust gas in an oxyfuel combustion boiler, capable of realizing a stable combustion by a burner in oxyfuel combustion. Weight ratio of flow rate of primary recirculating exhaust gas [ton/h] to amount of pulverized coal from a mill [ton/h] is defined as G/C, and the flow rate of primary recirculating exhaust gas is controlled so that the G/C falls within a given range.

Method and apparatus of controlling flow rate of primary recirculating exhaust gas in oxyfuel combustion boiler

Provided are fuel feed means, an air separation unitair feed means, a combustion furnacewith a burnerfor combustion, an exhaust gas linefor leading an exhaust gas from the combustion furnaceto outside of the combustion furnace, exhaust gas treatment meansandincluded in the exhaust gas line, and a recirculation linefor circulating a portion of the exhaust gas at least exhaust gas treatment meansandfor recirculation of a portion of the exhaust gas at least dust-removed by the exhaust gas treatment meansandto the burner. Further provided are exhaust gas capture meansfor taking out carbon dioxide gas from a remaining non-recirculating exhaust gas, and carbon dioxide gas feed meansandfor introducing carbon dioxide gas to equipmentsandof the oxyfuel combustion boiler facility.

Growing community of inventors

Tokyo, Japan

Shuzo Watanabe