Cov hauv qab no yog kev sib piv los ntawm ib puag ncig, kev lag luam thiab thev naus laus zis:
Qhov zoo ntawm natural gas
1. Environmental friendliness
• Tsawg carbon emissions
• Cov pa roj carbon dioxide uas tsim los ntawm cov pa roj carbon monoxide yog kwv yees li 50% ntawm cov thee thiab 70% ntawm cov roj, nrog rau cov pa roj carbon me me.
• Kev txo qis ntawm lwm yam kuab paug: Cov pa roj carbon monoxide combustion tsim yuav luag tsis muaj sulfur dioxide (SO₂) thiab cov teeb meem me me (PM2.5), thaum cov thee thiab roj combustion tso tawm ntau ntawm cov teeb meem no.
• Tsawg nitrogen oxide emissions
• Cov pa roj carbon monoxide kuj tsim cov nitrogen oxides tsawg dua (NOx) dua li cov thee thiab roj, thiab muaj kev cuam tshuam tsawg dua rau cov kua qaub nag thiab photochemical pollution.
2. Kev ua haujlwm siab zog
• Cov pa roj carbon monoxide muaj cov nqi calorific ntau dua thiab ua kom zoo dua combustion efficiency.
• Hauv kev tsim hluav taws xob, qhov ua tau zoo ntawm cov roj hluav taws xob sib xyaw ua ke lub voj voog hluav taws xob yog siab li 50%-60%, siab tshaj qhov hluav taws xob thee (kwv yees li 33%-40%).
3. Yooj yim thiab kev ntseeg tau
• Lub zog hluav taws xob hluav taws xob tuaj yeem pib thiab kaw sai, tsim nyog rau kev tswj cov kab hluav taws xob, thiab muaj zog ntxiv nrog cov khoom siv hluav taws xob txuas ntxiv xws li cua thiab hnub ci zog.
• Muaj feem xyuam rau ntau yam xwm txheej: los ntawm kev tsim hluav taws xob mus rau kev lag luam roj, mus rau cov cua kub hauv pej xeem thiab cov roj tsheb thauj mus los.
4. Kev faib tawm
• Muab piv nrog cov roj, cov khoom siv hluav taws xob muaj ntau dua thiab muaj kev pheej hmoo ntawm cov khoom siv tsawg.
5. Kev siv cov roj liquefied natural gas (LNG) technology
• LNG yog ib qho yooj yim rau khaws cia thiab thauj, ua rau cov khoom siv roj av hloov tau yooj yim thiab rhuav tshem cov kev txwv ntawm kev thauj mus los hauv cov kav dej.
Disadvantages ntawm natural gas
1. Methane leakage teeb meem
• Lub ntsiab tseem ceeb ntawm cov pa roj carbon monoxide yog methane (CH₄), uas yog cov roj uas muaj lub tsev cog khoom zoo dua li cov pa roj carbon dioxide (84 npaug ntawm CO₂ hauv 20 xyoo).
• Cov dej xau tuaj yeem tshwm sim thaum lub sijhawm ua haujlwm mining, kev thauj mus los thiab kev siv, ua rau muaj cov pa hluav taws xob ntau ntxiv.
2. Cov teeb meem ntawm kev khaws cia thiab kev thauj mus los
• Cov pa roj ntsha yog qhov loj hauv ntim thiab tsis yooj yim rau kev thauj thiab khaws cia ua ntej compression lossis liquefaction.
• Liquefied natural gas yuav tsum tau cia kub tsawg ntawm -162 degree, uas yog technically complex thiab kim.
3. Muaj zog saw hlau dependence
• Kev thauj mus los ntawm Natural gas cia siab rau cov kav xa mus ntev lossis LNG infrastructure, uas muaj lub sijhawm tsim kho ntev thiab cov nqi siab, thiab muaj kev cuam tshuam rau thaj tsam ntawm thaj chaw, tshwj xeeb tshaj yog thaum muab hla ciam teb.
• Cov roj av ua lag luam tus nqi hloov pauv tau zoo heev thiab yooj yim cuam tshuam los ntawm kev hloov pauv hauv kev lag luam thoob ntiaj teb.
4. Cov peev txheej tsis txuas ntxiv dua tshiab
• Txawm hais tias huv dua li cov thee thiab roj, cov pa roj carbon monoxide tseem yog cov roj fossil thiab tseem tsim cov pa roj carbon dioxide thiab lwm cov pa hauv tsev cog khoom, thiab tsis tuaj yeem ua tiav cov pa roj carbon nruab nrab.
5. Txwv tsis pub
• Txawm hais tias lub ntiaj teb cov khoom siv roj av muaj ntau dua, tag nrho cov khoom siv roj ntsha muaj tsawg dua li cov thee.
6. Siab pib peev
• Tus nqi tsim kho ntawm cov chaw tsim hluav taws xob roj hluav taws xob ntau dua li cov chaw tsim hluav taws xob hluav taws xob.
• Natural gas-related infrastructure (xws li LNG receiver stations and compressor stations) yuav tsum muaj peev txheej loj.
Cov ntsiab lus
Cov pa roj carbon monoxide yog lub zog huv thiab muaj txiaj ntsig ntau dua li cov thee thiab roj, thiab tshwj xeeb tshaj yog tsim los ua lub zog hloov pauv, ua lub luag haujlwm tseem ceeb hauv kev hloov mus rau lub zog tauj dua tshiab. Txawm li cas los xij, nws qhov teeb meem methane leakage thiab cov saw hlau dependence yuav tsum tau tsom mus rau thiab daws.