公开(公告)号：US20200239980A1

公开(公告)日：2020-07-30

申请号：US16755106

申请日：2018-10-15

Applicant: PYROGENESIS CANADA INC.

Inventor： Pierre CARABIN ,  William KREKLEWETZ ,  Ali SHAHVERDI ,  Hugo FORTIN-BLANCHETTE

IPC: C22B9/22 ,  H05B7/18 ,  F27D7/06 ,  F27D11/10 ,  F27D17/00 ,  C10J3/72 ,  C10J3/74

Abstract: An apparatus for the gasification and vitrification of waste comprises a plasma arc furnace provided with two movable graphite electrodes. The furnace includes an air-cooled bottom electrode adapted for transferring the current through a slag melt. The furnace is entirely sealed and is also provided with gas tight electrode seals adapted to control reducing conditions inside the furnace. An electrical circuit is further provided, which is adapted for switching from transferred io non-transferred modes of heating, thereby allowing the furnace to be restarted in case of slag freezing.

公开(公告)号：US20230250952A1

公开(公告)日：2023-08-10

申请号：US17942772

申请日：2022-09-12

Applicant: PYROGENESIS CANADA INC.

Inventor： Lakshminarayana RAO ,  Pierre CARABIN ,  Jean-Rene GAGNON ,  William KREKLEWETZ

IPC: F22B1/30 ,  F22B37/48 ,  F22B37/54

CPC classification number: F22B1/30 ,  F22B37/48 ,  F22B37/54

Abstract: A system for generating high pressure steam from dirty water uses a combination of submerged plasma arcs and electrical resistive heating. Dirty water from steam assisted gravity drainage, or other dirty water producing process. Which needs to be converted into high pressure steam, is fed directly without any pre-treatment, into a plasma fired steam generator, powered by submerged electrodes. The combination of electric arc plasma and resistive heating is created between the submerged electrodes. The heat so generated will boil the water portion of the dirty water feed to generate steam that is collected in a steam space and then removed therefrom. The solids and other residues (residual sludge) present in the feed water settle down at the bottom of the steam generator and are removed via a blow-down stream. The plasma arcs are used to intermittently remove any scaling or solid deposits that can accumulate on the electrodes.

公开(公告)号：US20190293280A1

公开(公告)日：2019-09-26

申请号：US16259508

申请日：2019-01-28

Applicant: PYROGENESIS CANADA INC.

Inventor： Lakshminarayana RAO ,  Pierre CARABIN ,  Jean-Rene GAGNON ,  William KREKLEWETZ

IPC: F22B1/30 ,  F22B37/48 ,  F22B37/54

Abstract: A system for generating high pressure steam from dirty water uses a combination of submerged plasma arcs and electrical resistive heating. Dirty water from steam assisted gravity drainage, or other dirty water producing process, which needs to be converted into high pressure steam, is fed directly without any pre-treatment, into a plasma fired steam generator, powered by submerged electrodes. The combination of electric arc plasma and resistive heating is created between the submerged electrodes. The heat so generated will boil the water portion of the dirty water feed to generate steam that is collected in a steam space and then removed therefrom. The solids and other residues (residual sludge) present in the feed water settle down at the bottom of the steam generator and are removed via a blow-down stream. The plasma arcs are used to intermittently remove any scaling or solid deposits that can accumulate on the electrodes.