A method of producing synthesis gas is provided. The method includes feeding a waste plastic feedstock into a partial oxidation gasifier. The waste plastic feedstock includes one or more vitrification materials. The method also includes partially oxidizing the waste plastic within the partial oxidation gasifier to produce the synthesis gas.

Chemical recycling facilities for processing mixed waste plastic are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy recovery facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

Provided herein are methods of producing synthesis gas (syngas) from aplastic material. The methods generally comprise feeding a wet waste plastic and/or liquified plastic stream and molecular oxygen (O2) into a partial oxidation (POX) gasifier. The wet waste plastic generally comprises the plastic material mixed with a liquid medium and has a liquid content of at least 2 weight percent. The wet waste plastic may be in the form of a plastic-containing slurry and/or may be derived from other processes that produce plastic-containing streams. The wet waste plastic may also be combined with a quantity of coal (or pet coke) before being fed to the gasifier. A partial oxidation reaction is performed within the gasifier by reacting at least a portion of the plastic material and the molecular oxygen to form the syngas.

A process and a plant are proposed for producing a synthesis gas including hydrogen and carbon oxides by partial oxidation of carbon-containing fuel in the presence of an oxygen-containing oxidant and a moderator, wherein the obtained raw synthesis gas is laden with soot particles. According to the invention the cooling of the raw synthesis gas is carried out using a crossflow heat exchanger, a shell and tube heat exchanger or a spiral heat exchanger, wherein the carbon-containing input stream or the oxidant stream or the moderator stream or a plurality of these streams serve as the first coolant and are thus preheated before introduction into the partial oxidation plant.

A fly ash recycling gasification furnace includes a fly ash burner, an ash remover, a fly ash storage tank, a variable pressure lock hopper, a fly ash blending system, an exhaust filter, and a backflushing nitrogen buffer tank. The fly ash burner is located on an inner wall of a hearth of the gasification furnace. The ash remover has an inlet connected to an outlet of a waste boiler of the gasification furnace. The fly ash storage tank is connected to a pressurized nitrogen inlet pipe, and a bottom outlet of the ash remover. The variable pressure lock hopper is connected to the fly ash storage tank. The fly ash blending system is connected to the variable pressure lock hopper and the fly ash burner. The exhaust filter is connected to the storage tank, the lock hopper and the blending system. The buffer tank is connected to the exhaust filter.

A two-stage syngas production method to produce a final product gas from a carbonaceous material includes producing a first product gas in a first reactor, separating char from the first product gas to produce separated char and char-depleted product gas, and separately reacting the separated char and the char-depleted product gas with an oxygen-containing gas in a second reactor to produce a final product gas. The separated char is introduced into the second reactor above the char-depleted product gas. The solids separation device may include serially connected cyclones, and the separated char may be entrained in a motive fluid in an eductor to produce a char and motive fluid mixture prior to being transferred to the second reactor. A biorefinery method produces a purified product from the final product gas.

The invention relates to a partial oxidation reactor (POX reactor) having a warm-up burner for producing synthesis gas by partial oxidation of fluid carbon-containing fuels in the presence of an oxygen-containing oxidant and to a process for startup of the partial oxidation reactor According to the invention the preheating of the partial oxidation reactor is carried out via a dedicated warm-up burner which is introduced via one of the media channels of the POX burner without any need to deinstall the entire POX burner.

A gasification process may include (a) introducing a liquid hydrocarbon feedstock and at least one of a dry feedstock or a first slurried feedstock into a reactor lower section, wherein the at least one dry feedstock or first slurried feedstock is introduced through two primary feed nozzles while the liquid hydrocarbon feedstock is introduced through at least two secondary feed nozzles; (b) partially combusting the feedstocks in the reactor lower section with a gas stream comprising an oxygen-containing gas or steam to evolve heat and form products comprising hot synthesis gas; (c) passing said hot synthesis gas from step (b) upward into a reactor upper section; (d) and introducing a second slurried feedstock into said reactor upper section, whereby heat from said hot synthesis gas supports reaction of the second slurried feedstock by pyrolysis and gasification reactions.

A process and system for liquefying and plasticizing a waste plastic in a pyrolysis film reactor are provided. More particularly, a liquefied waste plastic, which may include halogen-depleted molten waste plastics, may be pyrolyzed in a pyrolysis film reactor to form a pyrolysis oil and a pyrolysis gas. The pyrolysis film reactors may include a falling film reactor and/or an upflow film reactor.

The invention relates to the field of gasification of a carbonaceous feedstock and can be used in the chemical, petrochemical, coke-gas and energy industries. A method for gasification of a carbonaceous feedstock comprises partial oxidation of the carbonaceous feedstock in an oxidation chamber in a mixture of oxygen-containing gas and water vapour in a partial oxidation channel, which is mounted coaxially in the vertical oxidation chamber. The water vapour for the partial oxidation of the carbonaceous feedstock is supplied at the input and output of the vertical oxidation chamber of a combustion chamber. A gas producer comprises a housing, a burner device, a vertical oxidation chamber, manifolds for supplying carbonaceous feedstock, water vapour and oxygen-containing gas, a pipe for discharging gasification products, a slag removal chamber, and also a partial oxidation channel, which is arranged coaxially in the vertical oxidation chamber and is attached to an upper internal part of the housing, in which the burner device is installed. What is achieved is the production of producer gas with an elevated concentration of hydrogen.