Gray hydrogen is the main source of hydrogen in China at present, and hydrogen production from renewable energy will become the core hydrogen production mode in the future. China’s energy endowment of “rich coal, lack of oil and less gas” makes the hydrogen production from coal hydrogen production line account for the highest proportion in China, reaching 63.54% in 2019. Under the policy guidance of “3060 double carbon”, China hydrogen energy alliance predicts that by 2030, about 15% of hydrogen will be produced from renewable energy, 23% from industrial by-product hydrogen and 60% from fossil energy, 2% is supplied by other technologies such as biological hydrogen production. Hydrogen production from fossil energy has high output, low cost, mature technology but limited reserves, and carbon emissions; The cost of hydrogen production by industrial by-product purification is low, but it can not be used as a large-scale centralized hydrogen energy supply source; Hydrogen production from renewable energy can achieve low-carbon emission or zero carbon emission, increase the consumption proportion of renewable energy, and realize peak shaving and energy storage of power grid. Although the current cost is high, the cost of green hydrogen will also decline with the decline of the cost of photoelectric and wind power generation and the progress of electrolytic equipment technology. The international Hydrogen Energy Commission, the energy transformation Commission and other institutions predict that green hydrogen will be competitive compared with gray hydrogen in 2030.
The large-scale application technology of hydrogen production from alkaline electrolyzed water is mature, and the hydrogen production from proton exchange membrane electrolyzed water has development potential. The technology of hydrogen production from alkaline electrolyzed water has the advantages of large scale, low cost, low installed investment and flexible scale. The driving force of cost reduction mainly lies in large-scale production and the reduction of renewable power cost. The hydrogen production capacity of a single alkaline electrolyzer in China ranges from dozens to 1500nm3 / h, The price of a single alkaline electrolytic cell with hydrogen production capacity of 1000nm3 / h is between 7 million and 10 million yuan; The electrolytic cell used in proton exchange membrane electrolysis has compact structure, small volume and is conducive to rapid load change. The electrolytic cell has high efficiency and high gas purity. At present, only PEM electrolytic water technology can meet the requirement that the response time of electrolytic cell hydrogen production is less than 5S stipulated by the European Union, but the cost is high, which is 1.2 to 3 times that of alkaline electrolytic cell of the same scale. Chinese manufacturers actively arrange PEM electrolytic water equipment business, but the model of domestic complete PEM electrolytic cell is small. At present, the upper limit of production rate is 200Nm3 / h, and 400nm3 / h is mainly experimental, so there is still much room for improvement. As the cost of core components such as electrocatalyst, proton exchange membrane, membrane electrode and bipolar sector decreases, the cost of PEM electrolytic water equipment will also decrease.
The energy and chemical industry leaders that actively distribute green hydrogen are expected to benefit from the dual support of policies and markets. The medium and long-term plan for the development of hydrogen energy industry makes it clear to carry out hydrogen production demonstration from renewable energy in areas rich in wind, solar and hydropower resources Sungrow Power Supply Co.Ltd(300274) successively promoted the construction of renewable energy hydrogen production projects in Yushe County, Shanxi Province, Yushu City, Jilin Province and Baicheng City, Jilin Province, and simultaneously promoted the research and development of hydrogen production equipment technology. Among them, sht1000aalk hydrogen production unit has a rated hydrogen production capacity of 1000nm3 / h and DC power consumption ≤ 4.3kwh/m3 Longi Green Energy Technology Co.Ltd(601012) set up Xi’an Longji Hydrogen Energy Technology Co., Ltd. to carry out the research and development of hydrogen production equipment. The maximum gas production of single Longi Green Energy Technology Co.Ltd(601012) lhy-a series alkaline hydro hydrolysis tank can reach 1500nm3 / h Ningxia Baofeng Energy Group Co.Ltd(600989) has formed the world’s largest production capacity of 300 million standard cubic meters of green hydrogen / year and 150 million standard cubic meters of green oxygen / year Shanxi Meijin Energy Co.Ltd(000723) implement the hydrogen energy transformation strategy and layout the whole hydrogen energy industry chain. It is planned to build 300 hydrogen refueling stations during the 14th Five Year Plan period, and participate in Guohong hydrogen energy, Hongji Chuang energy, Feichi technology and other companies; Hongji chuangneng (unlisted) catalyst coated proton membrane (CCM) has a daily output of 15000 pieces and an annual production capacity of more than 300000 square meters. It will carry out industrial development for PEM hydrogen production membrane electrode by electrolytic water.
Risk warning: the construction of hydrogenation infrastructure is less than expected, the demand is lower than expected, and the competition in the new energy market is intensified
