METHOD FOR DETERMINING THE DEGREE OF SATURATION OF SOLID AMMONIA STORAGE MATERIALS IN CONTAINERS

Title:

METHOD FOR DETERMINING THE DEGREE OF SATURATION OF SOLID AMMONIA STORAGE MATERIALS IN CONTAINERS

Document Type and Number:

WIPO Patent Application WO/2011/103968

Kind Code:

A3

Abstract:

A method is provided for estimating the degree of saturation (S) of a reversible solid ammonia storage material (3) in a storage unit (1). The storage unit (1) is equipped with a heater (2) to release ammonia and a connected tube (4) for ammonia flow. The initial temperature (TINIT) is measured with a sensor (9) in or around the storage unit (1) before any heating is initiated. Heating is initiated while recording the active time of heating (t) or the amount of energy (Q) released by the heater. The desorption pressure created by solid storage material in the storage unit (1) is measured via a pressure sensor (8) in fluid communication with the storage unit (1). The time (t TARGET), or the heat (Q TARGET) where the pressure reaches a certain target pressure (PTARGET) is recorded. The values of the target-pressure time (t TARGET), or the target-pressure heat (Q TARGET), and the initial temperature (TINIT) are used to compute an approximate degree of saturation (S).

Inventors:

JOHANNESSEN TUE (DK)
JOHANSEN JOHNNY (DK)
ZEUTHEN JACOB HJERRILD (DK)
SCHMIDT HENNING (DK)
QUAADE ULRICH JOACHIM (DK)

Application Number:

PCT/EP2011/000674

Publication Date:

November 24, 2011

Filing Date:

February 14, 2011

Export Citation:

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Assignee:

AMMINEX AS (DK)
JOHANNESSEN TUE (DK)
JOHANSEN JOHNNY (DK)
ZEUTHEN JACOB HJERRILD (DK)
SCHMIDT HENNING (DK)
QUAADE ULRICH JOACHIM (DK)

International Classes:

F01N3/20; C01C1/00

Domestic Patent References:

WO2006012903A2

2006-02-09

Foreign References:

DE102006061370A1	2008-06-26
DE102008002612A1	2009-12-31
EP1992397A1	2008-11-19

Other References:

JOHANNESSEN T ET AL: "Ammonia Storage and Delivery Systems for Automotive NOx Aftertreatment", SAE TECHNICAL PAPER SERIES, SOCIETY OF AUTOMOTIVE ENGINEERS, WARRENDALE, PA, US, vol. SP-2154, no. 2008-01-1027, 14 April 2008 (2008-04-14), pages 1 - 8, XP002515826, ISSN: 0148-7191

Attorney, Agent or Firm:

LIPPICH, Wolfgang (Widenmayerstr. 5, München, DE)

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