초록 ▼

This method permits the production of at least two gaseous fluxes enriched in a permeable component from a gaseous mixture wherein the fluxes are considerably different, compared to the gaseous mixture. A first permeation unit ( 20 ) is supplied by the gaseous mixture feed. A second permeation unit

This method permits the production of at least two gaseous fluxes enriched in a permeable component from a gaseous mixture wherein the fluxes are considerably different, compared to the gaseous mixture. A first permeation unit ( 20 ) is supplied by the gaseous mixture feed. A second permeation unit ( 22 ) is supplied by the non-permeate produced by the first unit ( 20 ). The permeate produced by the second unit ( 22 ) which forms a first enriched flux is then sent to the third permeation unit ( 24 ) to form a second enriched flux.

대표청구항 ▼

1. A method of separating hydrogen from a gaseous mixture comprising at least hydrogen (H 2 ), wherein the method comprising the steps of:i) supplying a first permeation unit ( 20 ) with the gaseous mixture;ii) supplying a second permeation unit ( 22 ) with a non-permeate produced by the first perm

1. A method of separating hydrogen from a gaseous mixture comprising at least hydrogen (H 2 ), wherein the method comprising the steps of:i) supplying a first permeation unit ( 20 ) with the gaseous mixture;ii) supplying a second permeation unit ( 22 ) with a non-permeate produced by the first permeation unit ( 20 ), the permeate produced by the second unit 22 forming a first enriched hydrogen flux (flux III′);iii) supplying a third permeation unit ( 24 ) with a permeate produced by the first permeation unit ( 20 ), the permeate produced by the third unit ( 24 ) forming a second enriched hydrogen flux (flux IV); andwherein said method produces at least two substantially different fluxes enriched with hydrogen. 2. Method according to claim 1, wherein the flow of second enriched hydrogen flux (flux IV) can be adjusted. 3. Method according to claim 1, wherein the content of second enriched hydrogen flux (flux IV) is adjustable in relation to the pressure on the non-permeate side of the third permeation unit ( 24 ). 4. Method according to claim 1, wherein the non-permeate of the third permeation unit ( 24 ) forms a third flux (flux III″) with a lower content of hydrogen than the second enriched flux (flux IV). 5. A method according to claim 4, wherein supplying an ammonia synthesis processing unit ( 2 ) with at least one gaseous flux rich in at least hydrogen, whereby at least two enriched fluxes are produced, and wherein the processing unit ( 2 ) is being supplied with at least one of said first (III′) and third (III′″) enriched fluxes. 6. Method according to claim 5, wherein the first (III′) and third (I′″) enriched hydrogen fluxes are mixed upstream of the processing unit ( 2 ) to form a single enriched hydrogen flux (flux III) to supply said unit, and whereby the pressure of the first and third fluxes are adjusted considerably before they are mixed together. 7. Method according to claim 5, wherein the first (III′) and third (III′″) enriched hydrogen fluxes are sent into the processing unit ( 2 ) through separate inlets. 8. Method according to claim 5, wherein the gaseous mixture to be separated is a mixture produced by the processing unit ( 2 ). 9. Method according to claim 5, wherein the processing unit ( 2 ) creates the gaseous mixture comprising of purge products from said unit ( 2 ) and hydrogen is to be recovered. 10. Method according to claim 9, wherein the hydrogen content of the second flux (IV) is at least about 99 molar % for a flow of over about 10% more than that of the gaseous mixture. 11. Method according to claim 9, wherein the flow of the second flux (IV) is at least about 5% of that of the gaseous mixture for a hydrogen content of over about 99.8 molar %. 12. Method according to claim 8, wherein the gaseous mixture is a refinery gas, and wherein hydrogen is to be recovered. 13. Method according to claim 1, wherein said gaseous mixture further comprises of at least one component selected from the group consisting of: nitrogen, methane and argon. 14. Method according to claim 1, wherein said method utilizes at least one compressor. 15. Method according to claim 1, wherein said method utilizes no more than one compressor. 16. A method of separating hydrogen from a gaseous mixture comprising at least hydrogen (H2); wherein the method comprising the steps of:i) supplying a first permeation unit ( 20 ) with the gaseous mixture;ii) supplying a second permeation unit ( 22 ) with a non-permeate produced by the first permeation unit ( 20 ), the permeate produced by the second unit 22 forming a first enriched hydrogen flux (flux III′);iii) supplying a third permeation unit ( 24 ) with a permeate produced by the first permeation unit ( 20 ), the permeate produced by the third unit ( 24 ) forming a second enriched hydrogen flux (flux IV) and a non-permeate produced by the third unit forming a third flux (flux III″), andwherein sa id method produces at least two substantially different fluxes enriched with hydrogen and whereby said method utilizes one compressor.