Abstract: A tobacco odor deodorizing perfume composition contains a mandarin orange essential oil or a mandarin orange essential oil fraction having its terpene hydrocarbons substantially removed therefrom.

Abstract: A tobacco odor deodorant contains the components of at least two component groups selected from five component of (I) octanal, nonanal and/or decanal, (II) linalool, (III) carvone, (IV) methyl anthranilate and/or N-methyl anthranilate, and (V) sinensal and/or orange peel essential oil sinensal fraction.

Abstract: A cylindrical steam reforming unit contains a plurality of cylindrical bodies consisting of a first cylindrical body, a second cylindrical body and a third cylindrical body of successively increasing diameters disposed in concentric spaced relationship, a radiation cylinder disposed within and concentrically with the first cylindrical body, a burner disposed in the radial central portion of the radiation cylinder, and a reforming catalyst layer with a reforming catalyst filled in a gap between the first and second cylindrical bodies, wherein a CO shift catalyst layer and a CO removal catalyst layer are disposed in a gap between the second and third cylindrical bodies, the CO shift catalyst layer being formed in a gap with the direction of flow reversing at one axial end of the reforming catalyst layer and through a heat recovery layer of predetermined length.

Abstract: A single-pipe cylinder-type reformer includes a plurality of circular cylinders standing upright coaxially and forming therebetween a zigzag gas flow path allowing a raw material gas to flow therein, a radiation cylinder coaxially arranged inside the plurality of circular cylinders, a burner arranged at one end of a center of the radiation cylinder for generating a combustion gas, a reforming catalyst layer obtained by packing with a reforming catalyst at least a first gas flow path section of the gas flow path closest to the burner. A metal pre-heat layer formed on an upstream side of the reforming catalyst layer is packed with a metal packing. Helical dividing means are provided in each gas flow path section of the gas flow path to extend in the axial direction of the circular cylinders. The helical dividing means helically divide a gas and make it flow through the first gas flow section.

Abstract: A tobacco odor deodorant contains the components of at least two component groups selected from five component of (I) octanal, nonanal and/or decanal, (II) linalool, (III) carvone, (IV) methyl anthranilate and/or N-methyl anthranilate, and (V) sinensal and/or orange peel essential oil sinensal fraction.

Abstract: A cylindrical steam reforming unit comprising a plurality of cylindrical bodies consisting of a first cylindrical body, a second cylindrical body and a third cylindrical body of successively increasing diameters disposed in a concentric spaced relation, a radiation cylinder disposed within and concentrically with the first cylindrical body, a burner disposed in the radial central portion of the radiation cylinder, and a reforming catalyst layer with a reforming catalyst filled in a gap between the first and second cylindrical bodies, wherein a CO shift catalyst layer and a CO removal catalyst layer are disposed in a gap between the second and third cylindrical bodies, the CO shift catalyst layer being formed in a gap with the direction of flow reversed at one axial end of the reforming catalyst layer and through a heat recovery layer of predetermined length.

Abstract: A tobacco odor deodorizing perfume composition contains a mandarin orange essential oil or a mandarin orange essential oil fraction having its terpene hydrocarbons substantially removed therefrom.

Abstract: A single-pipe cylinder type reformer of the invention includes a plurality of circular cylinders standing upright coaxially, a radiation cylinder coaxially arranged inside the plurality of circular cylinders, and a burner arranged at one end of the center of the radiation cylinder, and has a reforming catalyst layer obtained by packing with a reforming catalyst at least a first gas flow path closest to the burner among a plurality of gas flow paths divided by the plurality of circular cylinders and having annular cross-sections. A pre-heat layer formed on one end side (upstream) of the reforming catalyst layer packed with the reforming catalyst is packed with a metal packing. Helical dividing means are provided in the respective gas flow paths to extend in the axial direction of the circular cylinders. The helical dividing means helically divide a gas and makes it flow through the first gas flow path.