.Iyunithi yokususa i-nitrogen isusa i-nitrogen kwigesi yendalo ukulungiselela ukuhanjiswa kwemibhobho. Ngokwedatha ye-Natural Gas Research Institute, i-17% yeendawo zokugcina igesi yendalo eMelika ziqulathe umxholo ophezulu we-nitrogen. Uninzi lwemigangatho yemibhobho ifuna ukuba umxholo we-nitrogen kwigesi yendalo ube ngaphantsi kwe-4%. Igesi yendalo ene-nitrogen eninzi ivalekile kuba ayinakuthuthwa iye kwimarike ngemibhobho. Ukuba kukho i-nitrogen eninzi kwipayipi, kukho umngcipheko wokuqhekeka kwegesi okanye ukutsha okungahambi kakuhle. I-Nitrogen ikwanciphisa ixabiso le-calorific legesi, nto leyo ebangela ukwehla kwe-BTU kunye nexabiso layo.
Ngenxa yokuba i-nitrogen (N2) kunye ne-methane (CH4) zinobukhulu obufanayo beemolekyuli kunye nee-dielectric constants eziphantsi, kunye nokungabikho kwe-reactivity ekhethiweyo, njenge-carbon dioxide okanye i-hydrogen sulfide kwiiyunithi ze-amine, i-denitrification yingxaki yokwahlulahlula ngobuchwephesha.
Ukutsalwa kwe-Pressure swing (PSA), ukuhlukaniswa kobushushu obuphantsi kunye nokufunxwa kwe-oyile engaxutywanga konke kusetyenzisiwe ukususa i-nitrogen kwigesi yendalo.
I-Pressure swing adsorption (PSA) isebenzisa i-adsorbent ukukhetha yahlula i-nitrogen kwi-methaneEmva koko igesi iphinda ivuselelwe kwi-adsorbent ngokudibanisa uxinzelelo kunye notshintsho lobushushu. I-PSA isetyenziselwa ukuphelelwa ngamanzi kwigesi, ukususwa kwekhabhoni diokside, ukuchithwa kwe-nitrification kunye nolawulo lwe-hydrocarbon dew point.
Ukwahlulwa kwe-cryogenic kusebenzisa ulwahlulo lwe-cryogenic Thermodynamic Ngokusekelwe kumanqaku okubila athelekiswayo e-methane (-259° F) kunye ne-nitrogen (-320° F). Njengoko umxube uphola, i-methane iya kuxinana ngaphambi kwe-nitrogen, ngaloo ndlela yahlula ezimbini.
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