Abstract: CaS oxidation has CaS particles oxidized into CaSO4 completely as far as to the interior of the particle. The interior of an oxidation apparatus 1 is partially partitioned by a partition 22 to thereby form a first fluidized bed 20 on the inner side, a second fluidized bed 21 on the outer side and a space portion 23 thereabove. A heat exchanger 27 having a baffle plate is disposed on the inner side of the partition 22 and an in-bed heat exchanger 33 is disposed on the outer side of same. A desulfurizing product-containing fine powder 204 and coarse powder 205 and a mixture gas 206 of nitrogen, oxygen and steam are supplied into the second fluidized bed 21. Also, coal 200 and coal char 201 are supplied into the first fluidized bed 20 from below.

Abstract: A fluidized bed incinerator having a combustion furnace includes first to fourth combustion sections. Fuel is supplied to the first combustion section and an combustion exhaust gas is exhausted after the fourth combustion section. First to fourth airs are supplied to the first to fourth combustion sections in first to fourth air surplus rates, respectively. The second air surplus rate is equal to or more than the first air surplus rate, the third air surplus rate is equal to or more than the second air surplus rate, and the fourth air surplus rate is equal to or more than the third air surplus rate.

Abstract: CaS oxidation has CaS particles oxidized into CaSO4 completely as far as to the interior of the particle. The interior of an oxidation apparatus 1 is partially partitioned by a partition 22 to thereby form a first fluidized bed 20 on the inner side, a second fluidized bed 21 on the outer side and a space portion 23 thereabove. A heat exchanger 27 having a baffle plate is disposed on the inner side of the partition 22 and an in-bed heat exchanger 33 is disposed on the outer side of same. A desulfurizing product-containing fine powder 204 and coarse powder 205 and a mixture gas 206 of nitrogen, oxygen and steam are supplied into the second fluidized bed 21. Also, coal 200 and coal char 201 are supplied into the first fluidized bed 20 from below.

Abstract: A pneumatic tire for passenger cars which is improved in harshness noise without deteriorating the steering stability is disclosed, wherein a harshness factor HF is set in the range of from 3.2 to 3.5, the harshness factor HF is: HF=−0.133×(R1/100)+0.245×(R1/R2)−0.183×(Kv/10)+3.898 R1 is a radius of curvature (in mm) of a crown part of the tread profile, R2 is a radius of curvature (in mm) of shoulder parts of the tread profile, and Kv is the vertical spring constant in kN/mm of the tire.

Abstract: A run-flat tire comprises a tread portion, a pair of bead portions, a pair of sidewall portions, a carcass comprising at least one carcass ply extending between the bead portions, a belt disposed radially outside the carcass in the tread portion, and a tread reinforcing layer disposed between carcass plies or alternatively between the carcass and belt, the tread reinforcing layer made of a high elastic modulus rubber compound having a complex elastic modulus E* of from 10 to 30 MPa, a thickness t of from 0.8 to 2.5 mm, and an axial width WA of 0.7 to 1.0 times the tread width TW of the tire.

Abstract: A particle movement controller, being disposed between a first fluidized bed, to where particles are supplied, and a second fluidized bed, from where particles are discharged, which controls the moving amount of the particles from the first fluidized bed to the second fluidized bed, is improved to have a substantially proportional characteristic without a hysteresis. Flow rate control nozzle pipes 30a, 30b, . . . , 30j made of horizontal pipes are disposed vertically at intervals and nozzle holes 31 are formed in a lower surface of each of the nozzles. An amount of air emitted from each nozzle hole 31 is controlled using opening and closing valves 33a, 33b, . . . , 33j or flow rate adjustment valves 35a, 35b, . . . , 35j (FIG. 2).

Abstract: A pneumatic tire which is improved in uneven tread wear resistance without sacrificing the on-the-snow/ice running performance. The tread portion comprises a plurality of blocks, each provided with at least two sipes. Each sipe extends axially of the tire at an angle of from 90 to 88 degrees to the circumferential direction of the tire. In a cross section of the block parallel to the tire equatorial plane, each sipe extends radially inwardly from the radially outer surface of the block at an angle (.beta.) of from 2 to 10 degrees with respect to the tire radial direction so that the radially inner ends of the sipes inclining the same direction towards the rear surface of the block. The rear surface of the block inclines to the same direction as the sipes at an angle (.gamma.2) of not more than 30 degrees with respect to the tire radial direction but not less than the angles (.beta.) of the sipes. The front surface of the block inclines to the reverse direction to the rear surface.

Abstract: A tire and rim combination including a flanged rim and a pneumatic tire. The tire includes a pair of bead parts each provided with a plurality of, preferably at least 8, pieces of exhaust ribs projecting from a bead outside surface and extending outwardly in a radial direction so as to form air passages for escape of air between a rim flange and the bead outside surface during rim assembly. A distance F1 from an inner end of the exhaust rib to a bead base line is in a range of 0.7 to 1.5 times a flange height FH measured from the bead base line, and a distance F2 from an outer end of the exhaust rib to the bead base line is not less than 1.1 times the flange height FH. The exhaust rib has a triangular sectional shape having a width of 0.5 to 1.0 mm and a height of 0.5 to 2.0 mm.

Abstract: A pneumatic tire to be mounted on a normal rim, has a pair of bead parts each having a bead bottom surface seating on a rim seat of the normal rim and bead outside surface connecting with the bead bottom surface and abutting against a rim flange of the normal rim. The bead outside surface is provided with an exhaust extending outward in the radial direction from an inner end of the exhaust so as to form the air passage for escape of air between the rim flange and bead outside surface at the time of rim assembly. The inner end of the exhaust is positioned within a region remote from a bead base line by a distance of 0.5 to 1.5 times a separating point height Fh defined as a height in the radial direction from the bead base line to a separating point at which the bead outside surface separates from the rim flange.

Abstract: The invention is directed to a pneumatic tire that can be mounted on a rim (wheel) to assure good engagement with the rim while preventing the occurrence of rim offsets. The bead portion 4a (as indicated by a solid line in FIG. 1) on the front side of a tire 1 which is later mounted on the rim has a bead base diameter .phi..sub.1, a toe portion angle .phi..sub.1, a contact angle .alpha..sub.1 , and a heel portion radius R.sub.1, whereas the bead portion 4b (as indicated by a dashed line in FIG. 1) on the back side of the tire which is first mounted on the rim has a bead base diameter .phi..sub.2, a toe portion angle .theta..sub.2, a contact angle .alpha..sub.2 and a heel portion radius R.sub.2. The bead portion 4a on the front side has a different shape than the bead portion 4b on the back side and the following two relationships hold between the two bead portions; the angle of .theta..sub.2 of the toe portion on the back side should be greater than the angle .theta..sub.

Abstract: A pneumatic tire to be mounted on a normal rim, has a pair of bead parts each having a bead bottom surface seating on a rim seat of the normal rim and bead outside surface connecting with the bead bottom surface and abutting against a rim flange of the normal rim. The bead outside surface is provided with exhaust extending outward in the radial direction from an inner end of the exhaust so as to form the air passage for escape of air between the rim flange and bead outside surface at the time of rim assembly. The inner end of the exhaust is positioned within a region remote from a bead base line by a distance of 0.5 to 1.5 times a separating point height Fh defined as a height in the radial direction from the bead base line to a separating point at which the bead outside surface separates from the rim flange.

Abstract: A tubeless radial tire for heavy duty use which comprises a pair of symmetrically shaped bead cores disposed one in each of the bead portions, a radial carcass having cords extending between the bead portions and turned up around the bead cores, and a belt layer disposed radially outside the carcass and inside a tread, wherein in each bead portion, the carcass is provided with a profile such that the inclination thereof at a point (P) located at the same axial position as the geometric center of the bead core is 45 to 53 degrees with respect to the axial direction of the tire when the tire is mounted on a regular rim and inflated to a pressure of 0.5 kgf/sq.cm.