Description:

According to the Ministry of Trade, Industry and Energy, three South Korean companies and five research institutions have recently signed a “Carbon-Neutral Green Ammonia Organization” work agreement, planning to fully develop the full-cycle technology of “green ammonia production-transportation-extraction-utilization” , For the high-profile development of “green ammonia” technology.

Title: South Korean company established Green Ammonia Organization

Keyword: Green Ammonia Organization，carbon dioxide emissions

According to the Ministry of Trade, Industry and Energy, three South Korean companies and five research institutions have recently signed a “Carbon-Neutral Green Ammonia Organization” work agreement, planning to fully develop the full-cycle technology of “green ammonia production-transportation-extraction-utilization” , For the high-profile development of “green ammonia” technology.

Green ammonia refers to ammonia produced from green hydrogen produced from renewable energy sources without carbon dioxide emissions.

The Green Ammonia Organization is one of the plans to achieve the goal of “2050 carbon neutrality”. It pays attention to green ammonia technology and formally develops related technologies. 13 companies including Samsung Engineering, Pohang Steel, Hyundai Steel, Korea Shipbuilding & Marine, Hyundai Motor, and Hyundai Heavy Industries participated in the formation.

Unlike liquefied hydrogen, green ammonia is easy to liquefy at room temperature and has a smaller volume. Thanks to this advantage, it is known as the most valuable hydrogen carrier at present, and the global green ammonia transportation and circulation infrastructure have tended to be perfected and commercialized. According to the predictions of the International Energy Agency (IEA) and the International Renewable Energy Agency (IRENA), green ammonia as a hydrogen carrier and carbon-free fuel will play a key role in the “carbon neutral” era. At present, countries around the world are also promoting the production and effective use of green ammonia. Take Japan as an example. In order to build a low-carbon society, Japan established the Green Ammonia Association in 2019 and established the Ammonia Energy Council in the Ministry of Economy, Trade and Industry. The use of fuel makes major policy recommendations.

The Korean Green Ammonia Organization plans to use original technologies to build a value chain of “green ammonia production-transportation-extraction-utilization industry” to lay a solid foundation for business development. First, it will cooperate in the development of technologies for low-cost production and transportation of green ammonia, fuel utilization of ships, hydrogen production through green ammonia, gas turbines, and carbon-free fuel utilization of fuel cells. In order to achieve safe production, transportation and utilization, a full-cycle plan has also been developed. safety standard.

The Ministry of Trade, Industry and Energy of Korea stated that it expects the Korean Green Ammonia Organization to become the starting point of “carbon neutrality”. The Korean government will also give full support to the technology of green ammonia transportation and storage media.

According to Doosan Heavy Industries & Construction, Doosan Heavy Industries & Construction and Pohang Iron and Steel and RIST signed the “Research and Development Agreement in the Field of Clean Liquid Ammonia Gas Turbine”. Work Agreement”.

According to this agreement, POSCO will use overseas green hydrogen to produce and supply liquid ammonia. POSCO and RIST will jointly develop a liquid ammonia upgrading machine. Doosan Heavy Industries & Construction is responsible for the development of burners and hydrogen turbines. After upgrading liquid ammonia The generated gas is combusted. On the basis of this agreement, the three parties will use the liquid ammonia combustion experimental equipment of the RIST Hydrogen Research Center to formally start technical research and development.

Liquid ammonia is a compound that combines hydrogen and nitrogen. It can store 1.7 times hydrogen in the same unit volume. It is known as an economical and efficient “hydrogen carrier”. The use of liquid ammonia as a fuel for power generation is very limited. This is because it is different from traditional gas turbines. Fuel-Compared with liquefied natural gas (LNG), the burning speed of liquid ammonia is very low, and the calorific value is only about 50%.

In order to make up for these shortcomings and improve the efficiency of power generation, the three companies do not intend to directly burn liquid ammonia, but re-decompose it into hydrogen and nitrogen through a reformer and burn it, and finally drive a gas turbine. Although there have been precedents for the development of retrofit machines and gas turbines, the integrated power generation technology is the first time in the world.

Compared with the direct gasification and combustion of liquid ammonia, the combustion speed and calorific value of hydrogen and nitrogen during combustion will increase significantly. In addition, the three parties will also design and apply technology to recover part of the heat from the exhaust gas generated in the combustion stage, and then put it into the reformer, thereby increasing the heat of the gas and improving the efficiency of power generation.

Liquid ammonia fuel power generation is one of the ideal environmentally friendly power generation modes because it does not emit carbon dioxide at all. In addition, it is also expected to apply this technology in LNG power generation to contribute to the reduction of carbon dioxide emissions in infrastructure power plants. Combustion of liquid ammonia and LNG at a standard 20% calorific ratio can reduce carbon dioxide emissions by about 20% compared with LNG alone for power generation.

Doosan Heavy Industries & Construction stated that this agreement provides an opportunity to develop hydrogen turbine technology that uses liquid ammonia as fuel. In the future, we will continue to develop hydrogen turbines and gas turbines, and use a variety of environmentally friendly energy sources such as LNG, hydrogen and liquid ammonia as sources of power generation.

In addition, Doosan Heavy Industries & Construction has recently decided to participate in the “Carbon Neutral Green Ammonia Organization”. Through this agreement, it will use Korean domestic technology to build a green liquid ammonia value chain and will also cooperate in the development of liquid ammonia hydrogen turbines.

In 2019, Doosan Heavy Industries & Construction successfully developed the world’s fifth-largest independent model of large gas turbines for power generation, ensuring its leading edge in gas turbine technology. Since May 2020, the company has participated in the national strategic project “Development of a 50% hydrogen-mixed environmentally friendly combustor for 300MW high-efficiency hydrogen gas turbines” with the Korea Research Institute of Machinery. Decomposed hydrogen and nitrogen are combusted efficiently

Content source: world metals