What Is Liquefied Natural Gas?

Liquefied Natural Gas (LNG), whose main component is methane, is recognized as the cleanest fossil energy on the planet. Colorless, odorless, non-toxic and non-corrosive, its volume is about 1/625 of the volume of the same amount of gaseous natural gas, and the quality of liquefied natural gas is only about 45% of the same volume of water.

Natural gas is a flammable gas contained in the formation, mainly low molecular

The world's advanced environmental protection countries are promoting the use of LNG.

1 Natural gas source

The biggest challenge in the development of LNG in China is the gas source. Easing

1 Finding a natural gas source

With the continuous improvement of the living standards of our nationals, the demand for natural gas in our country has become more and more urgent, but the gas source for the extraction of natural gas in China has not yet been clarified. At present, the main countries in the international development of gas fields are: Australia, Iran, Canada, and so on. The fastest-growing natural gas source in recent years is Australia, and it is estimated that the number of exported LNG will rank first in the world in 2008. According to the survey, the current emerging energy source is Africa. Canada is not weak in mining, and it also has construction of natural gas liquefaction plants in LNG projects.

2 Improving natural gas liquefaction technology and equipment

Equipment and technology with China's independent intellectual property rights are the main support for the development of LNG. With the equipment and technology of China's intellectual property rights, not only can we meet the development of our country's LNG industry, but it can also break the form of international monopoly. China's current technology for LNG is too shallow to support the demand of the entire Chinese market. China is a country with a large population. Due to the plunge in the oil market, natural gas has gradually become the market's main energy source, but the current national technology cannot be realized. Therefore, we must first overcome the key technologies of the entire LNG industry chain to form a series of LNG technologies with intellectual property rights and complete equipment. In addition, China has made great progress in key equipment of low temperature technology.

3 Increasing the bargaining power of LNG

China should accelerate the development of coalbed methane, shale gas, and pipeline gas, and reduce the impact of rising international liquefied natural gas prices on the Chinese market.

It is necessary to firmly lock the international situation through research, attention, etc.

1 Foreign research status

Natural gas now accounts for one-third of the world's total energy production, and it is likely to gradually squeeze the currently popular oil and coal to a secondary position in the near future. By 2020, the proportion of natural gas in world energy demand will reach 45% -50%. At present, the world's annual demand for natural gas exceeds 2.5 × 10m, and those entering international trade are (6250-6500) × 10m, and about 33% of them are sold by LNG. According to the 20th World Natural Gas Conference and related data, the potential demand for natural gas in the world will increase to 4 × 10m by 2030, and LNG has always been a market segment product. Its consumption is growing at a rate of 10% per year, and global LNG demand will increase from 218 million tons in 2010 to 310 million tons in 2015 and reach 410 million tons by 2020. In the first half of 2011, demand for LNG increased by 8.5% year-on-year and 12% throughout the year, mainly driven by new demand from Japan, the United Kingdom, and India, and increased demand from traditional Korean buyers. It is estimated that by 2015, China's natural gas supply structure will be 170 billion cubic meters of domestic gas, with a net import of 90 billion cubic meters. Natural gas consumption will reach 260 billion cubic meters, and its proportion in primary energy consumption will rise from the current 4% to 7% to 8%. China s natural gas consumption in 2011 was 131.3 billion cubic meters, and the proportion of natural gas consumption in disposable energy may increase to 10% to 15% ^[6]

Putian gas plant in Fujian Province puts into operation

On the morning of December 23, 2008, the first phase of the Fujian LNG (Liquefied Natural Gas) station and line project added 3 and 4 # storage tanks and the first unit of the gas power plant commissioning ceremony, grandly held in Xiuyu Port District, Meizhou Bay, Putian City, Fujian Province Held.

After the construction of the newly added 3 and 4 # storage tank projects is completed, the storage tank capacity of the Fujian LNG station line project will reach 640,000 cubic meters, which can meet the severe working conditions of 10 generating units that are full and stopped many times a year. . The addition of storage tanks will greatly increase the flexibility of gas storage peak shaving, providing security for existing users and the flexibility of new users.

According to the plan, between 2015 and 2020, a natural gas pipe grid bureau with a "two vertical and two horizontal, north-south extension" will be formed in Fujian Province. The layout of the ring network is from Zhangzhou along the Zhanglong Expressway to Longyan, from Fuzhou along the Jingfu Expressway to Nanping, and then from Nanping to Zhangping, Yong'an, Sanming, Shaxian to Longyan, forming a "two verticals" with the current Fuzhou-Zhangzhou pipeline. The two-horizontal ring-shaped gas supply network structure uses this ring network as the gas supply platform to connect the corresponding gas transmission branch lines and set up sub-transmission stations to cover the main gas market in the province. The "North-South Extension" dispatching route refers to Fuzhou via Ningde, Fu'an, and Fuding to the north; Xiamen Xiang'an to Zhangzhou and Zhangpu to the south to Lu'an. At that time, ordinary people in Fujian province can simultaneously use clean and environmentally friendly natural gas.

At the same time, the Putian Gas Power Plant # 1 unit, which uses a heavy-duty 9F gas-steam combined cycle generator set, successfully passed a 168-hour trial run before and has now officially started production. It is reported that the first phase of Putian Gas Power Plant will build 4 sets of generating units with a total investment of 5.08 billion yuan. After the first phase of the project is put into operation, the annual power generation will be 6 billion kWh. The use of clean energy LNG in power plants can effectively promote energy conservation and emission reduction, increase the conversion rate of primary energy to secondary energy, and reduce carbon dioxide emissions by about 2 million tons per year. The # 2 unit under construction has completed some engineering commissioning and is expected to be put into trial operation in April 2009. ^[9]