Gas is the fuel that emits the least CO2

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Former Oceano
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by Former Oceano » 18/12/09, 23:54

In all cases, the H / C ratio is the most favorable in the case of methane, it is 4.
For alkanes it is 2 + 2 / nn being the number of carbons.
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by Remundo » 19/12/09, 00:19

Absolutely, Ex Oceano.

You have a future in GDF marketing staff. :P
Last edited by Remundo the 19 / 12 / 09, 09: 56, 1 edited once.
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by Korben Dallas » 19/12/09, 03:17

Remundo wrote:Scientistically, they are right ... methane is even the champion since it releases only a CO2 for 2H2O.

Will the hydrogen not be even "cleaner"?

In addition, "natural" gas is not renewable, I find that announcing this is tendentious (who said "green washing"?).
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by Former Oceano » 19/12/09, 08:04

Indeed, H2 is cleaner. By cons it is more restrictive than CH4 because it filters metals. It must be transported in the form of metal hydrides.
For methane, Fiat, Opel, Volvo (among others) make dual-fuel CNG vehicles. The technology is therefore perfected.
To compare, the CH4 ratio with other alkanes:
H / C for CH4 = 4
H / C for ethane = 3
H / C for propane = 2,7
H / C for butane = 2,5

For octane (for gasoline we talk about octane number)
H / C for octane = 2,1

In addition in this demo, I only take the alkanes CnH2n + 2 and do not consider the alkenes (CnH2n) nor alkynes (CnH2n-2), which further decreases the H / C ratio ...

Methane therefore releases 2 times less CO2. Drawn from fossil energy it is also a rejection of CO2. However, it is less impactful than petrol. Finally, methane can be obtained by biodegradation. It's biogas. Here we use renewable energy.

In short, after LPG (which valorizes a gas normally burned in the flares of refineries) CNG is more ecological, the panacea being biogas.
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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 24/01/19, 23:43

Gas consumption fell in France last year

AFP the 24 Jan 2019

Gas consumption fell 5% in France last year due to milder temperatures and less use of it to generate electricity, the transport network manager said Thursday.

Natural gas consumption reached 442 terawatt hours (TWh) last year, after 465 TWh in 2017, according to raw data from GRTgaz revealed in its annual balance sheet.

"The main reason for this is warmer temperatures," explained Thierry Found, Managing Director of GRTgaz, during a press conference.

"Most of the drop is in the production of electricity," he said.

The use of gas for electricity production thus fell by 35% compared to 2017, to 35 TWh.

EDF's nuclear fleet was indeed much more available last year compared to the previous year, which made it less necessary to use gas-fired power plants.

In addition, the rain and the wind were there, making it possible to supply the hydraulic and wind power production means.

Public distributions, especially for individuals, have eroded by 2% to 270 TWh due to the relative mild temperatures. The evolution is stable in climate-corrected data.

Finally, industrial usage increased by 2% to 137 TWh. In this area, gas continues to benefit from industrial conversions that abandon fuel oil and coal, mainly for environmental reasons.

"Gas in industry remains fairly dynamic, with a little further conversion taking place, significantly, and for the moment not seeing the end of it", observes Thierry Found.

Referring to the case of biomethane (resulting from the fermentation of agricultural, household or industrial waste), he praised a "dynamic" sector, even if production is still marginal in France.

But he also fears "uncertainties" and "worrying things" which could be included in the multiannual energy program (PPE) which must set the course for the next 10 years.

The sector - which still has high costs - fears that ambitions in terms of volume will be lowered, that repurchase prices will be lowered, or even that these will be replaced by a system of calls for tenders.


https://www.connaissancedesenergies.org ... ier-190124
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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 26/01/19, 20:11

Gas consumption fell in France last year

AFP the 24 Jan 2019

Gas consumption fell 5% in France last year due to milder temperatures and less use of it to generate electricity, the transport network manager said Thursday.

Natural gas consumption reached 442 terawatt hours (TWh) last year, after 465 TWh in 2017, according to raw data from GRTgaz revealed in its annual balance sheet.

"The main reason for this is warmer temperatures," explained Thierry Found, Managing Director of GRTgaz, during a press conference.

"Most of the drop is in the production of electricity," he said.

The use of gas for electricity production thus fell by 35% compared to 2017, to 35 TWh.

EDF's nuclear fleet was indeed much more available last year compared to the previous year, which made it less necessary to use gas-fired power plants.

In addition, the rain and the wind were there, making it possible to supply the hydraulic and wind power production means.

Public distributions, especially for individuals, have eroded by 2% to 270 TWh due to the relative mild temperatures. The evolution is stable in climate-corrected data.

Finally, industrial usage increased by 2% to 137 TWh. In this area, gas continues to benefit from industrial conversions that abandon fuel oil and coal, mainly for environmental reasons.

"Gas in industry remains fairly dynamic, with a little further conversion taking place, significantly, and for the moment not seeing the end of it", observes Thierry Found.

Referring to the case of biomethane (resulting from the fermentation of agricultural, household or industrial waste), he praised a "dynamic" sector, even if production is still marginal in France.

But he also fears "uncertainties" and "worrying things" which could be included in the multiannual energy program (PPE) which must set the course for the next 10 years.

The sector - which still has high costs - fears that ambitions in terms of volume will be lowered, that repurchase prices will be lowered, or even that these will be replaced by a system of calls for tenders.


https://www.connaissancedesenergies.org ... ier-190124
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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 10/03/19, 14:37

American shale gas arrives discreetly in France

MARCH 8, 2019 BY OLIVIER PETITJEAN

In recent months, French energy companies have started to discreetly import liquefied natural gas from the United States - in other words, shale gas. A paradox, while France has prohibited the exploitation of this resource on its territory. The massive import of American shale gas into Europe is good news neither for those who suffer the consequences of this industry on the other side of the Atlantic, nor for the climate.

........
The LNG tanker Provalys, sold last year by Engie to Total, is to dock overnight Monday to Tuesday at the port of Montoir, near Saint-Nazaire. From the Sabine Pass gas export terminal, on the border between Louisiana and Texas, belonging to the American firm Cheniere.
........


https://multinationales.org/Le-gaz-de-s ... -en-France
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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 23/03/19, 21:05

Poutine inaugurates the launch of the Kharasaveyskoye gas and condensate field development project on the Yamal peninsula.
Gigantic reserve of 3000 billion m3!

Putin launches Kharasaveyskoye gas and condensate field

20 March 2019

President Vladimir Putin has launched via videoconference the full-scale development of the Kharasaveyskoye gas and condensate field, reads a statement on kremlin.ru.

The Kharasaveyskoye field is located on the Yamal Peninsula north of the Bovanenkovskoye field, mostly onshore and partly in the Kara Sea.

"The field is classified as unique thanks to its enormous gas reserves, which amount to 2 trillion cubic meters. Production is scheduled to begin at the field in 2023 at a design capacity of 32 billion cubic meters of gas per year. Since 20 percent of the field is located offshore, horizontal wells will be drilled from onshore to produce gas from the offshore part of the deposit, "the statement notes.

The project provides for the construction of a comprehensive gas treatment unit, a booster compressor station, clusters of producing gas wells, as well as transport and energy infrastructure.



https://arctic.ru/news/20190320/829921.html

Kharasaveyskoye is to the west on this Yamal map.
The existing pipeline network is not far away.

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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 30/03/19, 09:59

In 2018, global demand for natural gas increased by approximately 4,6% (IEA)

Ecofin agency. March 27, 2019

The progressive switch from the world energy industry to natural gas is becoming clearer.

According to new data released by the International Energy Agency (IEA), overall demand for natural gas increased by about 4,6%, or 170 billion m3 in 2018.

This is the largest increase in annual demand since 2010. 2018 also represents the second consecutive year of strong growth for fuel. In 2017, demand increased by 3% compared to 2016.

According to study details, the switch from coal to gas, notably by China, was responsible for nearly 40 billion m3 of the increase in demand and 18 billion m³ went to the electricity production sector. .

Unfortunately, the document did not address the other sources of the rest of the request. NGW reports, however, that the share of gas in electricity production has reached a record level of 34%.

It must be said that the United States experienced the highest year-to-year growth rate since the early 1950s, with 10,5% when its liquefaction and export projects were launched. China, meanwhile, added 17,7% to its request.

Together, they accounted for 70% of global growth last year. Gas now accounts for 23% of total global demand for primary energy.


https://www.agenceecofin.com/gaz-nature ... on-4-6-aie
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Re: Gas is the fuel that emits the least CO2




by moinsdewatt » 16/05/19, 11:08

Europe increasingly dependent on more expensive natural gas, says Cedigaz

MYRTILLE DELAMARCHE Usine Nouvelle on 15/05/2019

Gas consumption is on the rise everywhere except in Europe (stable) and South America (-3%), says Cedigaz, which qualifies 2018 as an "exceptional" year for the gas market.


In 2018, worldwide consumption of natural gas (3 billion cubic meters - bcm) increased by 850% in 4,7, in continuation of the acceleration observed the previous year. In 2017, demand increased by 3,5%. These are the conclusions of the Cedigaz information center, in an annual report hitherto reserved for its members, but which for the first time made a summary of it public.

Behind this increase, a combination of regulatory, economic and weather factors. 45% of the additional volumes consumed were consumed in the United States, under the double impact of periods of intense cold and access to cheap shale gas. The country increased its gas production by 11,5%, and its consumption by 10,5%. Chinese demand, driven by the replacement of coal-fired power stations by gas power stations, is also up sharply (+ 32%). China has become the world's largest importer of natural gas, ahead of Japan. India, Russia and the Middle East are on the same trend.

In Europe, the United Kingdom is now the leading producer of gas ahead of the Netherlands, which has become a net importer since the acceleration of the decline in the Groningen field. The Union imports 77% of its gas from third countries, led by Russia. Since the start of operations in Yamal, Russia has supplied 36% of the gas imported by Europe, ahead of Norway (23%), the other LNG suppliers (10%) and Algeria (7%). European gas exports are down 11,6%. Apparent gas consumption is stable (+ 0,1%).

France also has a relatively stable apparent consumption, of 46,4 billion cubic meters, against 45,3 bcm in 2017. With 46,3 bcm imported, it is the 8th world importer behind China, Japan, the Germany, Italy, South Korea, Mexico and Turkey.

GROWTH IN WORLD PRODUCTION

Production increased even further, to 4,9% in 2017. Almost half of the additional volumes produced (89 bcm out of 180) are shale gas extracted in the United States. Production increases have also been observed in Russia, Iran, Australia, China and Egypt. Dutch and Venezuelan productions are in decline.

The rise in liquefied natural gas (LNG, + 8,7%) supported world trade. It now represents a third of the volumes of gas exported.

MORE EXPENSIVE GAS

In Europe, the price of natural gas also jumped in 2018, in a global context of rising energy costs (oil, coal) and carbon. The average annual price (NBP) stood at 8,1 dollars / Mbtu, up 39% over that of 2017. In the United States, the spot price rose from 3 dollars / Mbtu in 2017 to 3,2 dollars in 2018, recalls Armelle Lecarpentier, chief economist at Cedigaz.


https://www.usinenouvelle.com/editorial ... az.N843120
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