Use of an ammonia storage device in production of energy

A kind of ammonia storage and combustion device technology, which is applied in the direction of ammonia preparation/separation, ammonia treatment/storage, electrochemical generator, etc., and can solve the problems of blocking and difficult transportation of ammonia

Inactive Publication Date: 2007-03-21
AMMINEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a particular disadvantage prevents the possibility of developing this technology, and that is the difficulty of easily and safely transporting ammonia [Schlgl, Angew, Chem, Int. Ed. 2003, 42, 2004]
Use of ammonia stored in liquid form in pressurized containers at room temperature may result in the uncontrolled release of large quantities of toxic ammonia if the container is physically damaged

Method used

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  • Use of an ammonia storage device in production of energy
  • Use of an ammonia storage device in production of energy
  • Use of an ammonia storage device in production of energy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1: Ammonia desorption from metal halide ammines

[0096] With Ni(NH 3 ) 6 Cl 2 and Mg(NH 3 ) 6 Cl 2 To illustrate the desorption of ammonia.

[0097] From Ni(NH 3 ) 6 Cl 2 The release of ammonia in the medium is carried out as follows: 1.1g of Ni(NH 3 ) 6 Cl 2 Place in a 10 ml internal volume container equipped with a single outlet tube connected to a flow measuring device. The container was sealed and heated using electrical resistance heating at a ramp rate of 0.2°C / min. The resulting ammonia fluxes are shown in panel A, and the cumulative released amounts constitute the 2 6 moles of NH 3 The total theoretical quantity (within measurement error).

[0098] Using Mg(NH 3 ) 6 Cl 2 A similar experiment was performed to illustrate desorption from alkaline earth metal halide ammines. The resulting ammonia flux is shown in panel B, and the cumulative released amount still constitutes 2 6 moles of NH 3 The total theoretical quantity (within measur...

Embodiment 2

[0099] Embodiment 2: in general formula M a x z Acquisition of gaseous ammonia from metal salts of

[0100] The general formula is M a x z The salt was exposed to gaseous ammonia and the absorption was studied using X-ray diffraction. Study of ZnCl after exposure to gaseous ammonia at 1 bar pressure and ambient temperature 2 、CuSO 4 、CoCl 3 , MgCl 2 and NiCl 2 . The results are shown in panels C-G. An additional experiment showed that in less than 20 minutes at 8 bar ammonia pressure, MgCl 2 The ammonia absorption is complete.

Embodiment 3

[0101] Example 3: Reversibility of absorption-desorption cycle

[0102] After absorption and subsequent desorption (panel H) and after a second absorption (panel I), by MgCl 2 X-ray diffraction study of the reversibility of the absorption cycle. When compared with Figure F, it can be found that the change of the crystal structure is reversible during the absorption / desorption of ammonia.

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Abstract

An electric power generating unit comprising (i) an ammonia storage device in the form of a container comprising an ammonia absorbing and releasing salt of the general formula: Ma(NH3)nXz, wherein M is one or more cations selected from alkali metals, alkaline earth metals, and transition metals such as Li, K, Mg, Ca, V, Cr, Mn, Fe, Co, Ni, Cu or Zn, X is one or more anions selected from fluoride, chloride, bromide, iodide, nitrate, thiocyanate, sulphate, molybdate, phosphate, and chlorate ions, a is the number of cations per salt molecule, Z is the number of anions per salt molecule, and n is the coordination number of 2 to 12. (ii) means for heating said container and ammonia absorbing and releasing salt for releasing ammonia gas and (iiia) a fuel cell for converting ammonia directly into electric power; or (iiib1) a reactor for dissociating ammonia into hydrogen and nitrogen and (iiib2) a fuel cell for converting hydrogen into electric power.

Description

technical field [0001] The invention relates to the use of an ammonia storage device comprising a metal ammine compound for the reversible storage of ammonia in solid form. Once released, the ammonia is either used directly as a fuel for the fuel cell or decomposed into H 2 (dihydrogen) and N 2 (dinitrogen), after optional purification steps, H 2 and N 2 Can be used as fuel for fuel cells. Background technique [0002] The potential advantages of using fuel cells have received much attention. App H 2 Or ammonia is attractive as a fuel (eg in fuel cells) because it produces no polluting emissions [Hoogers, Thompsett, CatTech 2000, 3, 106]. In large manufacturing enterprises, H 2 Or ammonia production is carried out from coal, naphtha or natural gas [Dybkjaer in Ammonia: Catalysis and Manufacture (Ed. Nielsen), Springer, 1995] as well as steam and air. This obviously produces CO 2 , but by applying an appropriate chelation protocol [Lackner, Annu. Rev. Energy Environ....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/06H01M8/22C01C1/02C01F5/00C01F5/26H01M8/04
CPCH01M8/04216H01M8/0606C01P2002/72C01F5/00C01C1/006Y02E60/50C01F5/26H01M8/22
Inventor C·H·克里斯坦森T·乔安内森J·K·诺斯科夫U·奎德
Owner AMMINEX
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