Amminex Emissions Technology A/s

Henning Schmidt

Tue Johannessen

Ulrich Joachim Quaade

Johnny Johansen

Jakob Svagin

Jacob Hjerrild Zeuthen

Claus Hviid Christensen

Jens Kehlet Nørskov

Rasmus Zink Sørensen

Ryan Bradley

Jan Oechsle

A system for storing ammonia in and releasing ammonia from a storage material capable of binding and releasing ammonia reversibly by adsorption or absorption for a process with a gradual ammonia demand that can vary over the time. The system has a container capable of housing the ammonia-containing storage material; a heating source arranged to supply heat for the desorption of ammonia from the solid storage medium; and a controller arranged to control the heating source to release ammonia. The heating source may be arranged inside the container and surrounded by ammonia storage material. A controllable dosing valve is arranged to dose released ammonia according to the ammonia demand. The controller comprises a feed-forward control arranged to control the heat supplied by the heating source, based on the ammonia demand.

System for storing ammonia in and releasing ammonia from a storage material and method for storing and releasing ammonia

A method for controlling the effective heat transfer from a storage unit (). During gas release from storage material () in the storage unit the storage material is heated by a heater (). During re-saturation of the storage material () with gas the heater is off. Controlling of the effective heat transfer from the storage unit () is performed, during gas release, by ceasing convection of a convection gas and, during re-saturation, by performing or enabling convection of a convection gas to cool the storage unit ().

Method and device for controlling effective heat transfer in a solid gas storage system

A method is provided for estimating the degree of saturation (S) of a reversible solid ammonia storage material () in a storage unit (). The storage unit () is equipped with a heater () to release ammonia and a connected tube () for ammonia flow. The initial temperature (T) is measured with a sensor () in or around the storage unit () 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 () is measured via a pressure sensor () in fluid communication with the storage unit (). The time (t), or the heat (Q) where the pressure reaches a certain target pressure (P) is recorded. The values of the target-pressure time (t), or the target-pressure heat (Q), and the initial temperature (T) are used to compute an approximate degree of saturation (S).

Method for determining the degree of saturation of solid ammonia storage materials in containers

A method of saturating reversible ammonia storage materials inside a container for the purpose of achieving high volumetric ammonia storage capacity and containers filled with the materials are disclosed.

Saturation of ammonia storage materials in containers

A method of storing and delivering ammonia and the use of electromagnetic radiation for desorption of ammonia from a chemical complex. Solid metal ammine complexes are applied for safe and high-density storage of ammonia to be released for use as reducing agent in selective catalytic reduction of NOin exhaust gases. The compositional formula of the metal ammine complexes is M(NH)X, where Mrepresents one or more metal ions capable of binding ammonia, X represents one or more anions, n is the coordination number (from 2 to 12), and z the valency of the metal ion (and thus the total number of compensating anion charges). Ammonia is released non-thermally by photon-activation using electromagnetic irradiation of the complex bond between ammonia coordinated to the metal ion.

Method of storing and delivering ammonia and the use of electromagnetic radiation for desorption of ammonia from a chemical complex

A system for storage and dosing of ammonia, including a solid ammonia storage material capable of binding and releasing ammonia reversibly by adsorption/absorption. The system is able to release ammonia gradually according to a demand that can vary over time with intermediate periods of no ammonia demand. A main storage unit and a start-up storage unit are provided. The storage units hold ammonia storage material. At least one one-way valve is provided via which the one main storage unit is in communication with the start-up storage unit. The one-way valve prevents any back-flow of ammonia from the start-up storage unit to the main storage unit. Heating devices are arranged to heat the main storage unit and the start-up storage unit separately to generate gaseous ammonia by thermal desorption from the solid storage material. A controller controls the heating power of the main storage unit and the start-up storage unit, thereby enabling ammonia release from at least one of the start-up and/or the main storage unit. A dosing valve controls ammonia flow from the storage units according to a demand.

Growing community of inventors

Dyssegard, Denmark

Henning Schmidt