1. A bicycle pedal comprising
a pedal body comprising a foot support surface,
a pedal axle holding the pedal body for rotation thereon,
a bearing element arranged between the pedal axle and the pedal body,
a fixing element preferably fully surrounding the pedal axle, said fixing element being provided for fixing the bearing element in the pedal body, and
a guide element arranged on an inner side of the pedal for lateral guidance of a foot supported on the foot support surface, the guide element at least partially covering the fixing element when seen in plan view.
2. The bicycle pedal according to claim 1, wherein, in the region of a front side of the pedal, the guide element comprises a retaining element for defining the position of the foot in the longitudinal direction.
3. A bicycle pedal comprising
a pedal body comprising a foot support surface,
a pedal axle holding the pedal body for rotation thereon,
a bearing element arranged between the pedal axle and the pedal body,
a retaining element, arranged in a front region of a foot support surface of the pedal, said retaining element being provided for defining the position of the foot in the longitudinal direction.
4. The bicycle pedal according to claim 3, wherein, on an inner side of the pedal, a guide element is provided for lateral guidance of a foot supported on the foot support surface, said guide element preferably merging into the retaining element.
5. The bicycle pedal according to claim 4, wherein a fixing element is provided, preferably fully surrounding the pedal axle, said fixing element being provided for fixing the bearing element in the pedal body, and a guide element, arranged on the inner side, is provided for lateral guidance of a foot supported on the foot support surface, said guide element at least partially covering the fixing element when seen in plan view.
6. The bicycle pedal according to claim 1, wherein the guide element andor the retaining element comprise an abutment face facing in the direction of the foot support surface, said abutment face being at least partially concave.
7. The bicycle pedal according to claim 6, wherein the retaining element comprises a retaining surface merging into said abutment face particularly in a stepless manner.
8. The bicycle pedal according to claim 6, wherein the retaining element, particularly said retaining surface, is arranged at an angle different from 0\xb0 relative to the longitudinal direction of the pedal, and the retaining surface preferably is arranged to face in the direction of the pedal body.
9. The bicycle pedal according to claim 1, wherein the guide element, particularly together with the retaining element, extends from the front side of the pedal via the fixing element into a region between the pedal axle and a rear side of the pedal.
10. The bicycle pedal according to claim 1, wherein the guide element has a curved shape in lateral view.
11. The bicycle pedal according to claim 1, wherein the guide element comprises a lateral opening in the region of the fixing element.
12. The bicycle pedal according to claim 1, wherein the foot support surface is concave.
13. The bicycle pedal according to claim 1, wherein the pedal body and the guide element and particularly the retaining element are formed in one piece, preferably from plastic.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for producing synthesis gas from biomass, comprising:
a) decomposing the biomass in at least one pyrolysis reactor into pyrolysis coke and pyrolysis gas;
b) introducing the pyrolysis coke into a fluidised bed of a synthesis gas reactor;
c) using the pyrolysis gas as fluidisation gas for the synthesis gas reactor; and
d) superheating the pyrolysis gas before entry into the fluidised bed of the synthesis gas reactor;
wherein the pyrolysis gas is introduced into the fluidised bed through a nozzle floor.
2. The method according to claim 1, wherein high-temperature pyrolysis is carried out in at least one pyrolysis reactor.
3. The method according to claim 1, wherein the pyrolysis is carried out until so little pyrolysis coke remains for the synthesis gas reactor that it is just sufficient for chemical quenching.
4. The method according to claim 1, wherein at least one pyrolysis reactor contains a fluidised bed.
5. The method according to claim 1, wherein the fluidisation gas flows through a catalyst bed before entry into the fluidised bed of the synthesis gas reactor.
6. The method according to claim 1, wherein gas from further processing of the synthesis gas is mixed with the heated pyrolysis gas before entry into the fluidised bed of the synthesis gas reactor.
7. The method according to claim 1, wherein at least one of the pyrolysis reactors has a multiplicity of externally heated screw conveyors, which are arranged in the manner of a tube bundle heat exchanger.
8. The method according to claim 1, wherein the fluidisation gas is mixed at least partially with a gas at the output of the synthesis gas reactor while circumventing the respective fluidised bed.
9. A device for carrying out the method according to claim 1, wherein the device comprises at least one pyrolysis reactor, at least one synthesis gas reactor, and means for superheating the pyrolysis gas before entry into the fluidised bed of a synthesis gas reactor, wherein the synthesis gas reactor has a nozzle floor for supplying pyrolysis gas and a fluidised bed.
10. The device according to claim 9, wherein at least one pyrolysis reactor contains a fluidised bed.
11. The device according to claim 9, wherein at least one of the pyrolysis reactors has a multiplicity of externally heated screw conveyors, which are arranged in the manner of a tube bundle heat exchanger.