초록 ▼

The invention relates to a process and an apparatus for gasifying liquid and/or fine-grain solid gasification substances and/or for reforming a gas, using a gasification agent, in a reaction (1). In the process the process heat is supplied by heat carrier particles which are heated within a substant

The invention relates to a process and an apparatus for gasifying liquid and/or fine-grain solid gasification substances and/or for reforming a gas, using a gasification agent, in a reaction (1). In the process the process heat is supplied by heat carrier particles which are heated within a substantially closed circuit in a heater (5) by combustion gases which are produced in a combustion chamber (3), and passed through the reactor (1) in counter-flow relationship with the gasification substance or the gas to be reformed and the gasification agent, and then returned to the heater (5) for renewed heating. In accordance with the invention the particles and the combustion gas form a fluidized bed above at least one grid (34, 34a, 34b, 34c, 34d, 34e) arranged in the heater (5). The particles flow out of the heater (5) into the adjoining combustion chamber (3) in which they form a fluidized bed with the combustion gas and pass by way of a flow transfer pipe (7, 7') out of the combustion chamber (3) into an upper region of the reactor (1). The throughput of particles through the flow transfer pipe (7, 7') forms a seal which prevents a throughflow of product gas which is generated in the reactor (1). The particles form one or more fluidized beds in the reactor (1) with the gasification substance and/or the gas to be reformed.

대표청구항 ▼

[ We claim:] [1.] A high temperature heat exchanger for a heat exchange between solid particles and a fluidizing agent in a fluidized bed, said heat exchanger comprising a vessel having at least one grid, said grid having through holes for supplying fluidizing gas, said grid being formed from substa

[ We claim:] [1.] A high temperature heat exchanger for a heat exchange between solid particles and a fluidizing agent in a fluidized bed, said heat exchanger comprising a vessel having at least one grid, said grid having through holes for supplying fluidizing gas, said grid being formed from substantially hexagonal ceramic elements, each of which comprises a support element and a plate-like cover element which lies thereon, wherein said support elements are alternately provided at adjacent sides with substantially horizontally extending holding projections and holding recesses for cooperating with holding recesses and holding projections respectively on adjacent support elements.