1. Renewable energy hydrogen cost
The principle of renewable energy hydrogen is based on electrolytic water hydrogen, depending on the electrolyte, can be divided into three kinds of basic hydropower, proton exchange membrane hydroponic solution and solid oxide hydrolysis. At present, alkaline hydrolysis technology is most mature, can stand up 1000 nm? H? / H, the service life is 20 years.
Table 1 Comparison of electrolytic water hydrogen
Take 1000 nm? H? / H alkaline hydrolysis project as an example, the total life cycle of the project is 20 years, according to the investigation of the Orange Club Research Institute, the fixed cost of such projects is from 2100 to 23 million yuan, covering alkaline hydropower solution , Hydrogen purification devices, material fees, installation service fees, civil engineering fees, compressors, fixed hydrogenation devices, filling systems, etc. If you work 8000 hours a year, 1 nm? H? The fixed cost is 0.13 to 0.14 yuan, and the 1.47 to 1.62 yuan / kg is equipped.
Table 2 Renewable energy hydrogen fixation cost
In terms of changes in change, there are main equipment maintenance, water fees and electricity bills. (1) If the equipment maintenance fee is measured by 3% of the equipment investment per year, is 1 nm? H? The equipment maintenance cost is 0.07 ~ 0.08 yuan, equivalent to 0.76 ~ 0.84 yuan / kg; (2) water fee according to the investigation data of the Orange Club Research Institute, 1 nm? H? The water fee is 0.05 yuan, it is equivalent to 0.56 yuan / kg; (3) If the electricity fee is pressed 0.3 yuan / kWh, 5KWH / NM? H? 1 nm? H? The electricity fee is 1.5 is a yuan, and it is equipped with 16.85 yuan / kg.
Therefore, in summary, 1 nm? H? The overall system was taken from 1.75 to 77 yuan, and 19.65 ~ 19.87 yuan / kg, which occupied 84.81% to 85.78%.
Table 3 Renewable energy hydrogen cost composition
Figure 1 Renewable energy hydrogen cost composition (based on the median level)
2. Small knot
(1) Compared with diesel, the current "hydrogen" fuel cost is still relatively high, which is a key factor in restricting the development of fuel cells.
Table 4 "Hydrogen" retail price
The current renewable energy hydrogen is about 19.65 to 19.87 yuan / kg (electricity price is 0.3 yuan / kWh). Considering the cost of transportation of 100 kilometers 10 yuan / kg, depreciation of hydrogen production equipment, operation costs, etc. cost 12 yuan / kg, in 7 yuan / kg national subsidies, "green hydrogen" The retail price barely reached 35 yuan / kg. In other words, the "green hydrogen" fuel cost of the current 31 tons of fuel cell heavy truck is 7 yuan / km (20 kg of hydrogen percentage of 100 kilometers), which is much higher than the fuel cost of 2.2 to 2.4 yuan / km with the same tonnage diesel card. Fuel cost. . Therefore, if "hydrogen" is the original footage of the fuel cell commercial vehicle, the cost is a major key factor.
The hydrogen hydrogen hydrogenation station in the station is significantly reduced due to the province of the intermediate transportation link. Even if it is not possible to rely entirely, it can be diluted in a manner in combination with the outside station in the station. Therefore, in the area where the renewable energy is enriched, local relevant departments should consider the renewable energy and application scenarios when planning a hydrogen station, and consider the renewable energy and application scenarios, and add hydrogen production facilities in the hydrogenation station, and the hydrogen production facility Appropriate award measures.
(2) Looking forward to the renewable energy hydrogen production price is a national policy.
my country needs to explore a "green hydrogen" cost drop path, of which the electricity price is a decisive factor in the cost of "hydrogen". When the electricity price is 0.3 yuan / kWh, the proportion is 84.81% to 85.78%; if it is calculated according to the current national general industrial and commercial average electricity price 0.53 ~ 0.67 yuan / kWh, the electricity bill is proportional. It will exceed 90%, and "hydrogen hydrogen" will exceed 30 yuan / kg. Therefore, the relevant ministries such as the National Development and Reform Commission are expected to use the fuel cell car demonstration application as an opportunity, based on the national energy security and domestic circulation development strategy, and it will be introduced to the renewable energy-saving price policy. At present, there are only Guangdong, Sichuan and other places to provide preferential electricity price policy support for renewable energy hydrogen production projects.
Table 5 Private price concessions in Guangdong and Sichuan renewable energy
Table 6 Current power price list
3) When the electricity price is 0.26 yuan / kWh, renewable energy hydrogen has a certain advantage.
The current main hydrogen method has chlor-alkali chemical by-product hydrogen, coke oven gas by-product hydrogen, coal hydrogen and natural gas rectification hydrogen. Among them, coke oven gas sub-production hydrogen, coal hydrogen and natural gas rectification hydrogen contains a large number of carbon impurities, and hydrogen purification is actually very high, and CO2 / CO is trapped, used and sealed (CCS / CCUS) ). Therefore, the cost of these three hydrogen modes is higher than the expected high, and the actual production cost is actually produced, and the renewable energy hydrogen has its advantage compared to it. The chlorine-alkali chemical by-product is high, low-cost, according to the research situation of the Orange Club Research Institute, the use of chlorine-alkali chemicals in 10 to 15 yuan / kg. Therefore, when the electricity price is 0.26 yuan / kWh, the renewable energy hydrogen production has been comparable compared to chlor-alkali chemical byproduction.
Table 7 Main hydrogen mode cost comparison
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