Abstract

The present invention concerns a gas pipe having a downwardly directed gas pipe exit, which is adapted for exiting a gasiform fluid below a liquid surface in a vessel, such as an oil reactor vessel in a pyrolysis plant, said gas pipe exit is provided with a device for the disruption of bubbles from a gasiform fluid in the gas pipe with the downwardly directed gas pipe exit below a liquid surface, wherein the device comprises at least one external annular ring assembly externally mounted around the downwardly directed pipe exit, wherein said annular ring assembly has at least one annular gap. The invention further concerns a method of disrupting bubbles from a gasiform fluid in a gas pipe with a downwardly directed gas pipe exit below a liquid surface in a vessel, such as an oil reactor vessel in a pyrolysis plant.

IPC Classes  ?

• C10K 1/04 - Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
• B01D 5/00 - Condensation of vapoursRecovering volatile solvents by condensation
• B01D 19/00 - Degasification of liquids
• B01D 47/02 - Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
• C10B 7/10 - Coke ovens with mechanical conveying means for the raw material inside the oven with conveyor-screws
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 57/06 - Other carbonising or coking processesFeatures of destructive distillation processes in general using charges of special composition containing additives
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste

Abstract

The present invention concerns a screw conveyor arrangement for a process equipment, such as a reactor (103) in a pyrolysis plant, wherein said screw conveyor arrangement comprises at least one main screw conveyor (112) moving material along a first transport direction towards an outlet at the downstream end of said main screw conveyor, and where a second screw conveyor (150) is provided receiving material from the main screw conveyor and forwarding the material in a second transport direction different than said first transport direction, wherein the arrangement comprises an impeller wheel (10), which is provided at the downstream end of the main screw conveyor, said impeller wheel having a plurality of blades (12) that are adapted to swiping the upper side of the second screw conveyor, and wherein the blades are formed with a concave curvature at the peripheral edges (13) of the blades, where said curvature matches the diameter of the second screw conveyor.

IPC Classes  ?

• B65G 33/24 - Screw or rotary spiral conveyors Details
• B65G 45/00 - Lubricating, cleaning, or clearing devices
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C10B 7/10 - Coke ovens with mechanical conveying means for the raw material inside the oven with conveyor-screws
• C10B 47/44 - Other processes in ovens with mechanical conveying means with conveyor-screws

Abstract

The present invention relates to a two-way screw conveyor (112) for a processing chamber of a pyrolysis plant. The two-way screw conveyor (112) comprises an axle (A) with a peripheral surface extending in a longitudinal direction and having an inlet end (IE) and an outlet end (OE), a first helical blade (HB), the helical blade positioned around a portion of the peripheral surface of the axle and adapted to flight a portion of the mixed waste stream in a first direction between the inlet end and the outlet end of the axle (A); and a second helical blade (HB'), the second helical blade (HB') positioned around a portion of the peripheral surface of the axle (A) and adapted to flight a portion of the mixed waste stream in a second, substantially opposite direction between the inlet end (IE) and the outlet end (OE) of the axle (A), wherein, by rotating the axle, the two-way screw conveyor is configured to convey portions of the mixed waste stream in opposite directions, so as to ensure sufficient mixing and heating of the mixed waste stream, increased degassing of volatile gasses and increased output of upcycled material from said mixed waste stream.

IPC Classes  ?

• C10B 47/44 - Other processes in ovens with mechanical conveying means with conveyor-screws
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 57/02 - Multi-step carbonising or coking processes
• B01F 27/724 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with a single helix closely surrounded by a casing
• B01F 27/726 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two helices with opposite pitch on the same shaftMixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two helices on the same axis, driven in opposite directions or at different speeds

Abstract

The present invention relates to a separating screw conveyor (113) for a processing chamber of a pyrolysis plant. The screw conveyor (113) comprises an axle (A) with a peripheral surface (PS) extending along a longitudinal axis and having an inlet end (IE) and an outlet end (OE). The screw conveyor (113) further comprises a helical blade (HB), the helical blade extending helically around the peripheral surface (PS), along the longitudinal axis of the axle (A), the helical blade (HB) configured with a pitch to flight the mixed waste stream upon rotation of the axle (A), wherein the helical blade (HB) is arranged radially at a distance (d) from the peripheral surface (PS) of the axle (A) to enable for a portion of the mixed waste stream to move from between helical windings (W, W', W", Wn) of the helical blade (HB), near the peripheral surface (PS) of the axle (A), upon rotation of said axle (A). The distance (d) between the axle (A) and the helical blade (HB) enables for liquid portions of the mixed waste stream to flow in a direction opposite the flight direction, thus enabling the screw conveyor (113) to separate at least solid waste from liquid waste during the upcycling process.

IPC Classes  ?

• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 47/44 - Other processes in ovens with mechanical conveying means with conveyor-screws
• C10B 57/02 - Multi-step carbonising or coking processes
• B01F 27/1145 - Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis
• B01F 27/724 - Mixers with rotary stirring devices in fixed receptaclesKneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with a single helix closely surrounded by a casing

Abstract

The invention relates to a pyrolysis system, such as a pyrolysis plant (100), for generating hydrocarbon compounds from a residual polymer product, such as a synthetic polymer, the system comprises5 - a densifier (101) configured to receive and heat the residual polymer product, - a degas feeder configured to transfer the residual polymer product from the densifier, and wherein a pH regulating additive, such as Calcium Oxide (CaO), is added to the residual polymer product, - a degasser (102) configured to receive the residual polymer product from the 10 degas feeder, wherein the degasser comprises a degasser conveyor (112), such as a degasser screw conveyor, for moving the residual polymer product to a degasser exit (122a) and a heater for heating the residual polymer product to a temperature within a range from 240 to 280°C, and - a pyrolysis reactor (103) comprising an inlet (123a) configured to receive the 15 residual polymer product from the degasser, wherein the pyrolysis reactor (103) comprises at least one reactor conveyor (113) for moving solid parts of the residual polymer product towards a black carbon outlet (123b) and a heater for heating the residual polymer product to generate pyrolysis vapour, and wherein the pyrolysis reactor comprises a reactor vapour outlet (123c) for release of the 20 pyrolysis vapour comprising the hydrocarbon compounds.

IPC Classes  ?

• C10B 53/07 - Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of synthetic polymeric materials, e.g. tyres
• C10B 57/02 - Multi-step carbonising or coking processes
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
• C10L 9/08 - Treating solid fuels to improve their combustion by heat treatment, e.g. calcining