Method and apparatus for particle separation including mechanical separation of particles
AssigneeTPS Termiska Processer AB
InventorsLennart Ahlgren, Erik Rensfelt
Life of this patent
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Abstract
The present invention relates to a method for separating entrained particles from a gas in a fluidised bed reactor system and fluidised bed reactor system including a particle separator for separating entrained particles from a gas. The particles are separated from the gas flowing in a direction other than the main gas flow direction, whereby the separation is multidimensional. The gas is allowed to pass from the outside of the configuration to the inside thereof and/or vice versa, wherein the particles are separated from the gas during such a travel. The gas flow can be multileveled.
Claims20
Method for separating entrained particles from a gas in a fluidised bed reactor system which comprises a separation region defined by a cylindrical r-, φ-, z-coordinate system, the method comprising the consecutive steps of:
- leading the gas in the z-direction (axial direction),
- diverting the gas to flow substantially in the r-direction (radial direction), while keeping the gas circumferentially distributed in r φ-planes, wherein the gas flows to and/or from substantially the whole circumference of the separation region in the rφ- planes, and
- mechanically separating the particles from the gas while the gas is flowing substantially in the r-direction, the gas continuing to flow substantially in the r-direction after mechanical separation.
Method for separating entrained particles from a gas in a fluidised bed reactor system, comprising the steps of:
- causing the gas to flow in a stacked multileveled flow with consecutive particle separation levels XN (X1, X2, X3, . . . , XN . . . ), N being an integer,
- directing the gas to flow in a first direction on the first level X1,
- bringing the gas to the next level X2 from the first level X1,
- directing the gas to flow in a direction reversed to the first direction on the next level X2, so as to create a doubled-back flow path,
- bringing the gas to additional particle separation levels, so as to cause the gas to flow in the first direction on levels with odd-numbered N and in the reversed direction on levels with even-numbered N, and
- mechanically separating the particles from the gas on each level.
Fluidised bed reactor system including a particle separator for separating entrained particles from a gas having a flow path, comprising a set of non-centrifugal mechanical separator elements disposed in the flow path of the gas, so that the gas is able to pass between the separator elements while the inertia of the particles directs them to the separator elements upon which they impinge and are separated and removed from the gas flow, wherein the set of separator elements is arranged in a configuration having a center zone with a center axis, and a circumference, wherein directional means are provided for directing the gas so that gas passing through the set of separator elements flows from the circumference to the center zone of the configuration or vice versa.
Fluidised bed reactor system including a particle separator for separating entrained particles from a gas having a flow path, comprising a set of non-centrifugal mechanical separator elements disposed in the flow path of the gas, so that the gas is able to pass between the separator elements while the inertia of the particles directs them to the separator elements upon which they impinge and are separated and removed from the gas flow, wherein the set of separator elements is arranged as a structure having consecutive particle separation levels XN (X1, X2, X3, . . . , Xn . . . ), N being an integer, wherein directional means are arranged to cause the gas to flow through the various levels of the structure in one direction on levels with odd-numbered N and in the reversed direction on levels with even-numbered N.
Dependencies are inferred from the claim text.