Global Patent Index - EP 3798431 A1

EP 3798431 A1 20210331 - METHOD AND SYSTEM FOR TREATING EMISSIONS USING A TRANSIENT PULSED PLASMA

Title (en)

METHOD AND SYSTEM FOR TREATING EMISSIONS USING A TRANSIENT PULSED PLASMA

Title (de)

VERFAHREN UND SYSTEM ZUR BEHANDLUNG VON EMISSIONEN MITHILFE EINES TRANSIENTEN GEPULSTEN PLASMAS

Title (fr)

PROCÉDÉ ET SYSTÈME DE TRAITEMENT D'ÉMISSIONS À L'AIDE D'UN PLASMA PULSÉ TRANSITOIRE

Publication

EP 3798431 A1 20210331 (EN)

Application

EP 20197970 A 20200924

Priority

US 201916586514 A 20190927

Abstract (en)

A method and system to treat emissions (e.g., smoke, particulate, odor, grease) employs a nanosecond high voltage pulse generator, a transient pulsed plasma reactor, and a DC voltage source that supplies a DC bias voltage, preferably a negative DC bias voltage to a conductor of the transient pulsed plasma reactor. The system is used in a scheme that substantially reduces at least particulate matter in emissions streams, for example emissions streams produced during cooking, for instance in commercial charbroiling processes (e.g., cooking of hamburger meat), or from operation of internal combustion engines. Both a reduction in the size distribution and total particulate mass is achieved using the method and system described herein.

IPC 8 full level

F01N 3/08 (2006.01)

CPC (source: EP)

F01N 3/0892 (2013.01); F01N 2240/04 (2013.01); F01N 2240/28 (2013.01)

Citation (applicant)

Citation (search report)

  • [Y] US 2001042372 A1 20011122 - KHAIR MAGDI K [US]
  • [Y] US 2004182832 A1 20040923 - ROSOCHA LOUIS A [US]
  • [XI] YAMASHITA H ET AL: "Characteristics of negative-polarity DC superimposed nanosecond pulsed discharge and its applications", 2019 IEEE PULSED POWER & PLASMA SCIENCE (PPPS), IEEE, 23 June 2019 (2019-06-23), pages 1 - 4, XP033726763, DOI: 10.1109/PPPS34859.2019.9009784
  • [Y] TAKAO MATSUMOTO ET AL: "Process Performances of 2 ns Pulsed Discharge Plasma", JAPANESE JOURNAL OF APPLIED PHYSICS, vol. 50, no. 8, 1 August 2011 (2011-08-01), JP, pages 08JF14, XP055756386, ISSN: 0021-4922, DOI: 10.1143/JJAP.50.08JF14
  • [Y] MOHAPATRO SANKARSAN ET AL: "Nanosecond pulse discharge based nitrogen oxides treatment using different electrode configurations", HIGH VOLTAGE, THE INSTITUTION OF ENGINEERING AND TECHNOLOGY, MICHAEL FARADAY HOUSE, SIX HILLS WAY, STEVENAGE, HERTS. SG1 2AY, UK, vol. 2, no. 2, 1 June 2017 (2017-06-01), pages 60 - 68, XP006076268, ISSN: 2397-7264, DOI: 10.1049/HVE.2017.0011
  • [Y] T. HUISKAMP ET AL: "Matching a Nanosecond Pulse Source to a Streamer Corona Plasma Reactor With a DC Bias", IEEE TRANSACTIONS ON PLASMA SCIENCE., vol. 43, no. 2, 1 February 2015 (2015-02-01), US, pages 617 - 624, XP055756470, ISSN: 0093-3813, DOI: 10.1109/TPS.2015.2388631

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3798431 A1 20210331

DOCDB simple family (application)

EP 20197970 A 20200924