A process for the conversion of hydrocarbons, comprising: feeding a mixture of first particles and second particles from a regenerator to a transport vessel or riser reactor, wherein the first particles have a smaller average particle size and/or are less dense than the second particles, and wherein the first particles and second particles may independently be catalytic or non-catalytic particles; feeding a hydrocarbon fraction and a reactive and/or non-reactive carrier fluid to the transport vessel or riser reactor; contacting the hydrocarbon fraction with the mixture of first particles and second particles to convert at least a portion of the hydrocarbon fraction; recovering an overhead product from the transport vessel or riser reactor comprising the converted hydrocarbon fraction, the carrier fluid and/or a reaction product of the carrier fluid, the second particles, and the first particles; feeding the overhead product to an integrated disengagement vessel, the integrated disengagement vessel comprising: a housing; a solids separation device disposed within the housing for separating the second particles from the overhead product to provide a first stream, comprising the converted hydrocarbon fraction, the first particles and the carrier fluid and/or a reaction product of the carrier fluid, and a second stream, comprising the separated second particles; one or more cyclones disposed within the housing for separating the first stream to recover a solids fraction, comprising the first particles, and a vapor fraction, comprising the converted hydrocarbon fraction and the carrier fluid and/or a reaction product of the carrier fluid; an internal vessel disposed within the housing for receiving the second stream comprising the separated second particles; an annular region between the housing and the internal vessel for receiving the solids fraction comprising the first particles; a vapor outlet for recovering the vapor fraction; a first solids outlet fluidly connected to the annular region; and a second solids outlet fluidly connected to the internal vessel; recovering the solids fraction from the annular region via the first solids outlet; and recovering the separated second particles via the second solids outlet. feeding a mixture of first particles and second particles from a regenerator to a transport vessel or riser reactor, wherein the first particles have a smaller average particle size and/or are less dense than the second particles, and wherein the first particles and second particles may independently be catalytic or non-catalytic particles; feeding a hydrocarbon fraction and a reactive and/or non-reactive carrier fluid to the transport vessel or riser reactor; contacting the hydrocarbon fraction with the mixture of first particles and second particles to convert at least a portion of the hydrocarbon fraction; recovering an overhead product from the transport vessel or riser reactor comprising the converted hydrocarbon fraction, the carrier fluid and/or a reaction product of the carrier fluid, the second particles, and the first particles; feeding the overhead product to an integrated disengagement vessel, the integrated disengagement vessel comprising: a housing; a solids separation device disposed within the housing for separating the second particles from the overhead product to provide a first stream, comprising the converted hydrocarbon fraction, the first particles and the carrier fluid and/or a reaction product of the carrier fluid, and a second stream, comprising the separated second particles; one or more cyclones disposed within the housing for separating the first stream to recover a solids fraction, comprising the first particles, and a vapor fraction, comprising the converted hydrocarbon fraction and the carrier fluid and/or a reaction product of the carrier fluid; an internal vessel disposed within the housing for receiving the second stream comprising the separated second particles; an annular region between the housing and the internal vessel for receiving the solids fraction comprising the first particles; a vapor outlet for recovering the vapor fraction; a first solids outlet fluidly connected to the annular region; and a second solids outlet fluidly connected to the internal vessel; a housing; a solids separation device disposed within the housing for separating the second particles from the overhead product to provide a first stream, comprising the converted hydrocarbon fraction, the first particles and the carrier fluid and/or a reaction product of the carrier fluid, and a second stream, comprising the separated second particles; one or more cyclones disposed within the housing for separating the first stream to recover a solids fraction, comprising the first particles, and a vapor fraction, comprising the converted hydrocarbon fraction and the carrier fluid and/or a reaction product of the carrier fluid; an internal vessel disposed within the housing for receiving the second stream comprising the separated second particles; an annular region between the housing and the internal vessel for receiving the solids fraction comprising the first particles; a vapor outlet for recovering the vapor fraction; a first solids outlet fluidly connected to the annular region; and a second solids outlet fluidly connected to the internal vessel; recovering the solids fraction from the annular region via the first solids outlet; and recovering the separated second particles via the second solids outlet.