C10J2200/39

Char preparation system and gasifier for all-steam gasification with carbon capture

An ASG system for polygeneration with CC includes a devolatilizer that pyrolyzes solid fuel to produce char and gases. A burner adds exothermic heat by high-pressure sub-stoichiometric combustion, a mixing pot causes turbulent flow of the gases to heat received solid fuel, and a riser micronizes resulting friable char. A devolatilizer cyclone separates the micronized char by weight providing micronized char, steam and gases to a gasifier feed and oversized char to the mixing pot. An indirect fluid bed gasifier combustion loop includes a gasifier coupled to the gasifier feed, a steam input to provide oxygen for gasification and to facilitate sand-char separation, and an output for providing syngas. A burner provides POC to a mixing pot which provides hot sand with POC to a POC cyclone via a riser, where the POC cyclone separates sand and POC by weight and provides POC and sand for steam-carbon reaction.

Char Preparation System and Gasifier for All-Steam Gasification with Carbon Capture

An ASG system for polygeneration with CC includes a devolatilizer that pyrolyzes solid fuel to produce char and gases. A burner adds exothermic heat by high-pressure sub-stoichiometric combustion, a mixing pot causes turbulent flow of the gases to heat received solid fuel, and a riser micronizes resulting friable char. A devolatilizer cyclone separates the micronized char by weight providing micronized char, steam and gases to a gasifier feed and oversized char to the mixing pot. An indirect fluid bed gasifier combustion loop includes a gasifier coupled to the gasifier feed, a steam input to provide oxygen for gasification and to facilitate sand-char separation, and an output for providing syngas. A burner provides POC to a mixing pot which provides hot sand with POC to a POC cyclone via a riser, where the POC cyclone separates sand and POC by weight and provides POC and sand for steam-carbon reaction.

Char Preparation System and Gasifier for All-Steam Gasification with Carbon Capture

An ASG system for polygeneration with CC includes a devolatilizer that pyrolyzes solid fuel to produce char and gases. A burner adds exothermic heat by high-pressure sub-stoichiometric combustion, a mixing pot causes turbulent flow of the gases to heat received solid fuel, and a riser micronizes resulting friable char. A devolatilizer cyclone separates the micronized char by weight providing micronized char, steam and gases to a gasifier feed and oversized char to the mixing pot. An indirect fluid bed gasifier combustion loop includes a gasifier coupled to the gasifier feed, a steam input to provide oxygen for gasification and to facilitate sand-char separation, and an output for providing syngas. A burner provides POC to a mixing pot which provides hot sand with POC to a POC cyclone via a riser, where the POC cyclone separates sand and POC by weight and provides POC and sand for steam-carbon reaction.

Method and installation for gasification of heterogenic mixtures of organic substances and compounds
20240010941 · 2024-01-11 ·

The present invention relates to a process and an installation for the continuous flow of gasification of heterogeneous mixtures of organic substances and compounds such as biomass waste, forestry, municipal solid and liquid waste, sludge from sewage treatment plants and other similar waste. Presentation Of The Invention: The process according to the invention has the following steps: a) the organic raw material in heterogeneous mixture is introduced into the pyrolysis reactor (2) where it is gradually heated, by forced convection and thermal radiation, to a temperature of 900 . . . 1000 C., being kept in contact with metal surfaces that transport thermal energy through conduction from the exothermic area of the gasification reactor. The metal surfaces are placed in fixed positions, different so that the contact surface changes after 5 . . . 20 cm traversed by the flow of organic raw material, each group of metal slats forming 2 . . . 8 separation planes, b) the results the pyrolysis process, respectively the solid, liquid and gaseous phases, are gravitationally transferred to the gasification reactor (1) where they are mixed with the gasification agent, respectively air/oxygen and steam in two successive enclosures, the first enclosure with vortex flow and the second with laminar flow, each stage having independent control of the process parameters. The installation according to the invention consists of one or more pyrolysis reactors (2) of cylindrical or prismatic shape, fixed in the enclosures (15) of the gasification reactor (1), a nozzle system (18) for the controlled introduction of air/oxygen and a lock system consisting of the valve (3) and the container (4) for slag removal.

Process to prepare a char product and a syngas mixture

The invention is directed to a process to prepare a char product and a syngas mixture comprising hydrogen and carbon monoxide from a solid biomass feed comprising the following steps: (i) performing a continuously operated partial oxidation of the solid biomass feed at a gas temperature of between 700 and 1100 C. and at a solids residence time of less than 5 seconds, (ii) continuously separating the formed char particles as the char product from the formed gaseous fraction and (iii) subjecting the gaseous fraction obtained in step (ii) to a continuously operated partial oxidation and/or to a steam reforming to obtain the syngas mixture. The solid biomass feed has been obtained by torrefaction of a starting material comprising lignocellulose and is a sieve fraction wherein 99 wt % of the solid biomass particles is smaller than 2 mm.

FLUIDIZED BED COKING WITH FUEL GAS PRODUCTION

A Flexicoking unit which retains the capability of converting heavy oil feeds to lower boiling liquid hydrocarbon products while making a fuel gas from rejected coke to provide only a minimal coke yield. The heater section of the conventional three section unit (reactor, heater, gasifier) is eliminated and all or a portion of the cold coke from the reactor is passed directly to the gasifier which is modified by the installation of separators to remove coke particles from the product gas which is taken out of the gasifier for ultization. In one embodiment, a portion of cold coke is transferred directly from the reactor to the gasifier, and another portion of cold coke is combined with hot, partly gasified coke particles transferred directly from the gasifier to the reactor. The hot coke from the gasifier is passed directly to the coking zone of the reactor to supply heat to support the endothermic cracking reactions and supply seed nuclei for the formation of coke in the reactor. Coke is withdrawn from the gasifier to remove excess coke and to purge the system of metals and ash.

PROCESS TO PREPARE A CHAR PRODUCT AND A SYNGAS MIXTURE

The invention is directed to a process to prepare a char product and a syngas mixture comprising hydrogen and carbon monoxide from a solid biomass feed comprising the following steps: (i) performing a continuously operated partial oxidation of the solid biomass feed at a gas temperature of between 700 and 1100 C. and at a solids residence time of less than 5 seconds, (ii) continuously separating the formed char particles as the char product from the formed gaseous fraction and (iii) subjecting the gaseous fraction obtained in step (ii) to a continuously operated partial oxidation and/or to a steam reforming to obtain the syngas mixture. The solid biomass feed has been obtained by torrefaction of a starting material comprising lignocellulose and is a sieve fraction wherein 99 wt % of the solid biomass particles is smaller than 2 mm.

Reaction intensification structure
12060534 · 2024-08-13 · ·

Provided is a reaction intensification structure. The structure includes a pyrolysis gasification apparatus, a flow strengthening mechanism and a turbulence mechanism. The pyrolysis gasification apparatus is cylindrical, and is provided with a feed inlet and a discharge outlet at front and rear ends thereof respectively. The flow strengthening mechanism is provided on an outer wall of the pyrolysis gasification apparatus at a position near the front end, and it is communicated with such apparatus and at an angle of 20? to 50? relative to a radial direction of such apparatus. The turbulence mechanism includes multiple turbulence bodies distributed in an array on an inner wall of the pyrolysis gasification apparatus and protrude towards a center of such apparatus. The turbulence bodies are divided into multiple groups distributed along an axial direction of such apparatus. Each group of turbulence bodies are distributed along a circumferential direction of such apparatus.

AN APPARATUS AND A METHOD FOR GASIFICATION OF A SOLID FUEL IN A FLUIDIZED BED GASIFIER

An apparatus and a method for gasification of a solid fuel in a fluidized bed gasifier involving the steps of: introducing first solid material particles and second solid material particles into a turbulent fluidized bed, wherein the particle weight of each of the first solid material particles is greater than the particle weight of each of the second solid material particles; maintaining at least most of the first solid material particles in the turbulent fluidized bed; receiving at least most of the second solid material particles included in the gas-solid mixture in a cyclone; in a return leg conduit, collecting at least most of the solid fuel particles separated from the gas-solid mixture in the cyclone and collecting at least most of the second solid material particles separated from the gas-solid mixture in the cyclone; and feeding at least most of the second solid material particles from the return leg conduit and at least most of the solid fuel particles from the return leg conduit into the turbulent fluidized bed.

Rotating centrifugal particle separator and gasifier having the same

A method of separating solid particles from gaseous matter comprises rotating a spinner about a spinner axis in a rotational direction. The spinner has fluid passageways that operatively connect a gaseous inlet environment to a gaseous outlet environment. The fluid passageways circumferentially extending in a direction opposite the rotational direction as the fluid passageways extend radially inward. The method further comprises forcing gaseous matter radially inward through the rotating spinner by creating pressure differential that is such that the pressure of the gaseous inlet environment exceeds the pressure of the gaseous fluid outlet. An assembly comprises a spinner configured to rotate in a rotational direction. The spinner has fluid passageways that operatively connect a gaseous inlet environment to a gaseous outlet environment. A heating element is positioned adjacent to the spinner in a manner such that particles flung from the spinner can strike the heating element.