Abstract: The present application provides a black water processing system for cleaning a flow of black water. The black water processing system may include a flash vessel for producing a flow of overhead vapors from the flow of black water. The flash vessel also may include an integrated heat exchanger in communication with a flow of grey water. The flow of overhead vapors and the flow of grey water may exchange heat in the integrated heat exchanger.

Abstract: A system including a gasifier that may remove black water and includes a reactor and a quench chamber disposed downstream of the reactor. The quench chamber may cool a syngas generated in the reactor. The system also includes a syngas treatment system that may supply the gasifier with a first portion of a quench liquid via a first inlet and a second portion of the quench liquid via a second inlet; a lock hopper that may receive gasification by-products generated in the reactor and supply a third portion of the quench liquid to the gasifier via a third inlet, and a deaerator coupled to the syngas treatment system and the lock hopper. The deaerator may depressurize the lock hopper.

Abstract: A system includes a gasifier configured to gasify a fuel contained within a fuel slurry in order to generate syngas and a black water. The fuel slurry includes at least the fuel and water. The system also includes a black water treatment system fluidly coupled to the gasifier. The black water treatment system is configured to treat the black water to generate a grey water. The black water treatment system includes a first flash tank configured to process the black water by reducing a pressure of the black water to generate a first discharged black water. The black water treatment system also includes a first flow path fluidly coupling a first discharged black water outlet of the first flash tank with a feedstock preparation system configured to generate the fuel slurry in order to provide at least a first portion of the first discharged black water of the first flash tank to the feedstock preparation system.

Abstract: A method for treating a carbonaceous material including heating a carbonaceous material to move at least a portion of tar through the carbonaceous material toward a surface of the carbonaceous material to form a tar coating on the surface. The method also includes cooling the carbonaceous material and the tar coating on the surface to form a tar-coated carbonaceous material, wherein at least the portion of tar that forms the tar coating on the surface remains in contact with the carbonaceous material while the carbonaceous material is heated to form the tar coating and while the carbonaceous material and the tar coating are cooled to form the tar-coated carbonaceous material.

Abstract: The present application provides a black water processing system for cleaning a flow of black water. The black water processing system may include a flash vessel for producing a flow of overhead vapors from the flow of black water. The flash vessel also may include an integrated heat exchanger in communication with a flow of grey water. The flow of overhead vapors and the flow of grey water may exchange heat in the integrated heat exchanger.

Abstract: The present application provides a slurry concentration system for concentrating a flow of slurry. The slurry concentration system may include a boiler for producing a flow of steam, a first evaporator for concentrating the flow of slurry with the flow of steam and creating a first flow of water vapor, and a second evaporator positioned downstream of the first evaporator for further concentrating the flow of slurry with the first flow of water vapor and creating a second flow of water vapor.

Abstract: A system including a gasifier that may remove black water and includes a reactor and a quench chamber disposed downstream of the reactor. The quench chamber may cool a syngas generated in the reactor. The system also includes a syngas treatment system that may supply the gasifier with a first portion of a quench liquid via a first inlet and a second portion of the quench liquid via a second inlet; a lock hopper that may receive gasification by-products generated in the reactor and supply a third portion of the quench liquid to the gasifier via a third inlet, and a deaerator coupled to the syngas treatment system and the lock hopper. The deaerator may depressurize the lock hopper.

Abstract: A system includes a gasifier configured to gasify a fuel contained within a fuel slurry in order to generate syngas and a black water. The fuel slurry includes at least the fuel and water. The system also includes a black water treatment system fluidly coupled to the gasifier. The black water treatment system is configured to treat the black water to generate a grey water. The black water treatment system includes a first flash tank configured to process the black water by reducing a pressure of the black water to generate a first discharged black water. The black water treatment system also includes a first flow path fluidly coupling a first discharged black water outlet of the first flash tank with a feedstock preparation system configured to generate the fuel slurry in order to provide at least a first portion of the first discharged black water of the first flash tank to the feedstock preparation system.

Abstract: The present application provides a slurry concentration system for concentrating a flow of slurry. The slurry concentration system may include a boiler for producing a flow of steam, a first evaporator for concentrating the flow of slurry with the flow of steam and creating a first flow of water vapor, and a second evaporator positioned downstream of the first evaporator for further concentrating the flow of slurry with the first flow of water vapor and creating a second flow of water vapor.

Abstract: A coal separation unit for a gasification system includes a vessel having a top portion and a bottom portion, a first inlet configured to receive a feed stream including at least coal and ash from a grinding unit, a second inlet configured to receive a wash fluid stream, a first outlet configured to convey a low-ash feed stream, and a second outlet configured to convey an ash-rich stream. In operation, the feed stream is washed with the wash fluid stream in the separation unit to separate at least a portion of the ash from the coal. The separated ash settles to the bottom portion of the vessel and is conveyed via the second outlet as the ash-rich stream. The separated coal floats to the top portion of the vessel and is conveyed via the first outlet to a gasification unit as the low-ash feed stream.

Abstract: A system includes a feed preparation system, with a fluid injection system configured to inject a fluid into a feed stream to generate a feed-fluid mixture. The feed stream includes a first solid, a second solid, and a gas. The feed preparation system also includes a cyclone configured to separate the feed-fluid mixture into a first stream that includes the first solid and the gas, and a second stream that includes the second solid and the fluid.

Abstract: A method for treating a carbonaceous material comprising heating a carbonaceous material to form a mixture of the carbonaceous material and a tar; cooling the mixture of the carbonaceous material and the tar; and coating a surface of the carbonaceous material with the tar to form a tar-coated carbonaceous material, and a system related thereto.