B01D2273/20

METHOD AND SYSTEM FOR PRODUCING REFINED HYDROCARBONS AND SOLID COKE FROM WASTE PLASTICS

A method and associated system for producing refined hydrocarbons from waste plastics. The method and associated system provide for pretreating waste plastics; a producing a pyrolysis gas by introducing the waste plastics pretreated in the pretreatment process into a pyrolysis reactor; producing in a lightening process a pyrolysis oil by introducing the pyrolysis gas into a hot filter; dehydrating a first mixed solution, obtained by mixing the produced pyrolysis oil with washing water and a demulsifier, by applying a voltage to the first mixed solution; hydrotreating a second mixed solution obtained by mixing the dehydrated first mixed solution with a sulfur source to produce a refined pyrolysis oil from which impurities are removed; and coking the refined pyrolysis oil, wherein a liquid condensed in the hot filter is re-introduced into the pyrolysis reactor.

Synthesis gas production by reverse water gas shift reaction using carbon dioxide and pyrolysis-derived hydrogen
20240383749 · 2024-11-21 ·

Chemical systems and methods for synthesis gas (syngas) production relying on pyrolysis gases containing a pyrolysis carbon product and pyrolysis-derived hydrogen from a pyrolysis reactor that pyrolyzes a hydrocarbon feedstock. A high-temperature carbon separation mechanism separates the pyrolysis carbon product from the pyrolysis gases while maintaining their temperature above 800? C. A carbon dioxide source provides a gas stream primarily made up of a carbon dioxide gas. The hot pyrolysis gases containing pyrolysis-derived hydrogen and the carbon dioxide gas are sent to a reverse water gas shift reactor to react the pyrolysis gases with carbon dioxide to form the syngas. The syngas thus formed in the reverse water gas shift reactor can be used in many types of downstream systems and applications, including in reducing a metal oxide such as iron ore or other metal oxide to obtain a metal oxide reduction product. Recycling and heat exchange are provided for achieving further system efficiencies.

Flame trap filter

A flame trap filter including a grid structure, wherein the grid structure determines grid openings which are bordered by intersecting strip sections, and/or wherein the grid structure is formed by a laid scrim. A method for producing a grid structure of a flame trap filter includes the step of allowing a substance to solidify on a substrate, in order to form at least one strip section of the grid structure. Alternatively or in addition, the method includes the step of compressing a material for the flame trap filter or a semi-finished product of the flame trap filter at points, e.g. by mechanically deforming the material or the semi-finished product, in order to form at least one strip section of the grid structure.

METHOD FOR CLEANING PROCESS OFF- OR ENGINE EXHAUST GAS

Method for removal of soot, ash and metals or metal compounds, together with removal of NOx and SOx being present in process off-gasses or engine exhaust gasses.

METHOD AND SYSTEM FOR THE REMOVAL OF PARTICULATE MATTER AND HEAVY METALS FROM ENGINE EXHAUST GAS

Method and system for removal of soot, ash and heavy metals, and optionally additionally NOx and SOx being present in exhaust gas from an engine operated on heavy fuel oil.

APPARATUS WITH HEATED FILTER AND OPERATION METHOD OF THE SAME

An apparatus includes a process chamber, a vacuum pump disposed downstream of the process chamber for discharging a fluid flow from the process chamber, a filter mounted between the process chamber and the vacuum pump for filtering the fluid flow, and a heating device disposed to heat the filter.

Hot gas filtration system and process for regenerating said system
09669344 · 2017-06-06 · ·

The present invention relates to a hot gas filtration system and a process for regenerating such a hot gas filtration system, said filtration system comprising a filter vessel, a tubesheet separating the interior of said filter vessel into a raw gas section and a clean gas section, and a plurality of filter elements. Said filter elements, arranged in two or more groups, are connected to the tubesheet with a clean end and extend with a raw gas portion into the raw gas section. Two or more plenum chambers are accommodated in the clean gas section and groupwise accommodate the clean gas ends of the filter elements, each of said plenum chambers comprising a gas exchange opening providing a direct fluid communication with the clean gas section. The hot gas filtration system furthermore comprises a blowback arrangement comprising a blowback gas reservoir and a blowback gas pipe for each group of filter elements, said blowback gas pipes having an outlet positioned in said clean gas section of the vessel, said outlet of the blowback gas pipes being directed at the gas exchange opening of the plenum chambers, said outlet of said blowback pipe having a free cross-sectional area of from about 10% to about 90% of the free cross-sectional area of said gas exchange opening.

DOWNDRAFT PLASMA GASIFIER
20250084326 · 2025-03-13 · ·

A gasifier system configured to generate synthesis gas via thermal decomposition of materials at elevated temperatures in an oxygen deprived atmosphere via pyrolysis is disclosed. The gasifier may include numerous subsystems configured to increase the operational efficiency of the gasifier. For example, and not by means of limitation, the gasifier may include a syngas recirculation system, a screenless ash removal system, a tar reduction system, a negative slope gasifier system and a syngas catalyzer system. The syngas recirculation system may increase efficiency of the gasifier system.

Integrated filter material and preparation method and application thereof

An integrated filter material, a preparation method and an application. The filter material is composed of a commercial dust removal filter material and a catalyst that is grown on the filter material and that has a function of simultaneously decomposing nitrogen oxides and dioxins. In the preparation method, a precursor solution of manganese and cerium oxides is impregnated on the filter material, and manganese and cerium oxides are grown on the filter material by means of a chemical reaction; and vanadium oxychloride is used as a precursor of vanadium oxide and is impregnated on the filter material, reacts in water, and prepared by drying, hydrothermal and other processes. The composite filter material may remove three kinds of pollutants in flue gas at the same time, and the catalyst is firmly loaded and does not easily fall off.