Kabushiki Kaisha Toshiba

The Tokyo Electric Power Company, Incorporated

Terunobu Hayata

Tomiaki Furuya

Fuminobu Tezuka

Junji Koezuka

Susumu Yamanaka

Kazuo Suzuki

Masao Koyama

Yukishige Maezawa

Hideki Shimada

Masahiro Tadauchi

Jiro Kano

Isao Ito

Akio Ohkoshi

Takeshi Gotanda

Kouichi Teshima

Naohiko Oyasato

Susumu Handa

Norio Takeyama

Yukiyoshi Hara

Tomohiro Todoroki

Katsuhei Tanemura

Teruhisa Ogihara

Michio Ikeda

Yoshiaki Yokoyama

Satoshi Kanazawa

Hitoshi Tominaga

Miho Suzuki

Masamichi Ito

Kenjiro Shizukawa

Kaichiro Ogihara

A processing apparatus capable of separating and recovering resins and metals, respectively, from an object being processed, which has resins and metals as its constituent, comprises a first gastight area (,), in which temperature and pressure are regulated so as to permit selective thermal decomposition of resins from the object (,) being processed, a second gastight area (,), which is partitioned from the first gastight area by an openable and closeable partition (,C) and in which temperature and pressure are regulated so as to permit selective vaporization of metals from the object, first recovering chamber (,) connected to the first gastight area for recovering gases produced by thermal decomposition of resins, and second recovering chamber (,) connected to the second gastight area for recovering vaporized metals.

Processing apparatus, processing system and processing method

Disclosed is a method and apparatus for pyrolytically decomposing waste plastic which may contain halogen-containing polymer such as PVC. The plastic is heated at 270&deg; to 350&deg; C., whereby a plasticizer contained in the plastic material is decomposed and vaporized, and a chlorine-containing polymer is dechlorinated to produce hydrogen chloride. The vaporized decomposition matter and the hydrogen chloride are removed from the plastic, and the vaporized decomposition matter is separated from the hydrogen chloride. Then isolated plastic is further heated to 450&deg; C. or higher to produce a pyrolysis product. Alternatively, the former heating step is divided into two steps of: heating at a temperature lower than 270&deg; C., whereby a plasticizer is decomposed; and heating to 270&deg; to 350&deg; C., whereby a chlorine-containing polymer contained in the plastic material is dechlorinated. Accordingly, the decomposition matter of plasticizer and hydrogen chloride are separately removed from the plastic.

Method and apparatus for pyrolytically decomposing waste plastic

Disclosed is a method and an apparatus for pyrolytically decomposing waste plastic, e.g. PVC, to recover light fuel oil. The invention enables to prevent the product from contamination by halogen compounds. The plastic is first thermally decomposed in an atmosphere of a normal or reduced pressure to produce a primary decomposition product in the form of gas and a decomposition residue. The primary decomposition product is cooled at a first cooling temperature to separate the primary decomposition product into a relatively light fraction containing a desired light constituent and a relatively heavy fraction by condensation of the relatively heavy fraction, and the relatively heavy fraction is then thermally decomposed in an atmosphere pressurized at a predetermined pressure to produce a secondary decomposition product containing the desired light constituent in the form of gas. The relatively light fraction and the secondary decomposition product are cooled at a second cooling temperature to condense a fraction containing the desired light constituent. This method may be changed so that the first and second thermal decomposition steps are performed at the same high pressure in one vessel and the heavy fraction is circulated. Additionally, alkali treatment of time plastic to be decomposed or the decomposition gas, thermal pretreatment of the plastic and addition of water or catalyst to the plastic can be used. The decomposition apparatus which is so systematized that the decomposition can be continuously performed is shown.

Disclosed is a method and an apparatus for decomposing organic halogen-containing compounds by using ultraviolet radiation. In the decomposition method, the organic halogen-containing compound is dissolved in a solvent to form a liquid, and the liquid is exposed to ultraviolet radiation in the substantial absence of alkaline material. Then, the liquid is treated with an alkaline material. The decomposition apparatus for the organic halogen-containing compound comprises: preparation means for preparing a liquid containing the organic halogen-containing compound and a solvent in which the organic halogen-containing compound can be dissolved; exposure means for exposing the liquid to light radiation of an effective wavelength for initiating decomposition of the organic halogen-containing compound in the substantial absence of an alkaline material; and treatment means for treating the liquid with an alkaline material.

Method and apparatus for decomposing organic halogen-containing compound

A gas trubine combustor includes a main body with a combustion portion into which mixture of fuel and air is supplied. The gas mixture is burned through a catalytic reaction at a catalyst body arranged in the main body. The gas mixture passed through the catalyst body is introduced into a gas phase combustion portion provided in the main body. Between the catalyst body and the gas phase combustion portion is arranged a dividing unit which has a plurality of branch passages. The gas mixture passed through the catalyst body is divided by the dividing unit into a plurality of gas streams flowing through the branch passages. Each of the gas streams is mixed with fuel supplied from a fuel supply tube.

Gas turbine combustor

A high temperature combustion catalyst for use in a catalytic combustion type gas turbine combustor and the like, having a superior low temperature ignitionability and a superior thermal durability at a high temperature, which comprises a porous carrier layer, a catalyst component such as palladium and platinum, and first, second and third promoter components, the latter four components being carried on the porous carrier layer, in which the first promoter component includes one of rare earth elements such as lanthanum, cerium, praseodymium and neodymium, alkaline earth metals such as barium, strontium and calcium, and oxides thereof, in which the second promoter component includes magnesium, silicon and oxides thereof, and in which the third promotor component includes one of heavy metals such as nickel, zirconium, cobalt, iron and manganese, and oxides thereof. A method for producing this high temperature combustion catalyst is also disclosed.

High temperature combustion catalyst and method for producing the same

A nitrogen oxides decreasing combustion method which comprises; a first step of mixing a fuel and air with each other; a second step of bringing the mixture obtained in the first step, into contact with a packed catalyst so as to cause a portion of the mixture to burn only through a catalytic reaction; and a third step of adding a fresh supply of the fuel to a stream obtained from the second step to form a mixed gas and causing the mixed gas to undergo non-catalytic thermal combustion; the temperature of said packed catalyst being lower than the ignition temperature of the mixture and the adiabatic flame temperature of said mixed gas being lower than a temperature at which the nitrogen oxides occur.

Nitrogen oxides decreasing combustion method

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Kawasaki, Japan

Terunobu Hayata