China Power Construction Group Co., Ltd. Northwest Survey Design and Research Institute Co., Ltd., established in 2011, is a wholly state-owned company approved by the State Council. It is also the only comprehensive construction group in China that provides water conservancy and power engineering and infrastructure planning, survey and design, consulting and supervision, construction management, and investment operations. As of the end of 2019, assets were 353.735 billion yuan, annual operating income was 271.834 billion yuan, and profits were 8.513 billion yuan. The business covers more than 80 countries and regions around the world. In July 2019, the 2019 Fortune Global 500 was released: ranked 161th. The "Belt and Road" list of the top 100 Chinese companies ranked second.
Through multiple comprehensive inspections and technical communication with DEAR, the customer signed a set of projects with DEAR to produce natural gas from natural gas using 40,000 cubic meters per day; this project is the first national large-scale pilot project of biological natural gas in Shanxi Province. .
Biomass energy, as a national strategic emerging industry, is an important renewable energy source, which is conducive to the implementation of rural revitalization strategies, optimization of energy structure, improvement of the ecological environment, and development of a circular economy. Under the foresight and attention of the DEAR air separation Leadership, Kaifeng DEAR air separation Industry Co., Ltd., as a professional director unit of China's gas separation industry, is a national high-tech enterprise. It has unique advantages, and has achieved great results in the purification of biogas, the recovery and purification of carbon dioxide, the liquefaction of coal seam gas, the purification of coke oven gas, and the purification of purge gas. (Note: there are 20,000, 30,000, 4 10,000, 60, 80, 80, 100,000 different levels of performance and technology), and obtained a number of national patents for practical technology inventions; Institute of Physics and Chemistry of the Chinese Academy of Sciences, Zhongyuan Oilfield Design Institute, some well-known domestic research institutions have signed good contracts with DEAR cooperation agreement; has a one-stop service system for design, manufacture and installation, and also has the highest domestic level pressure vessel manufacturing and installation qualification certificate.
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Power China 40000m³/D-SM Biomass Natural Gas Purification Project |
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1) Small equipment investment, simple process and convenient operation; 2) Water as absorbent is cheap, readily available, non-toxic and easy to regenerate; 3) Water has no chemical reaction to each component in the biogas, and has little corrosion to the equipment; 4) Circulating water can be reused without pollution to environment 5) Product gas recovery rate is high; 6) Simple operation and easy promotion. |
1. Production scale
The raw material biogas processing capacity is 15000Nm³ / d.
2. Product Solution
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Project |
Technical index |
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CNG product |
Standard gas state Nm³/ d |
According to the actual working conditions |
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CH4content: |
97%±1% |
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CO₂, CO₂,% |
≤3.0 |
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High calorific value of purified gas: |
＞35MJ/ m3 |
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H2S content: |
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CH4 yield: |
97%±1% |
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Water dew point: |
-50℃ |
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Storage pressure |
MPa.G |
0.9 |
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Storage temperature |
℃ |
≤35℃ |
| Supporting unit | Unit |
| 1. Desulfurization tower | 2 Set |
| 2. Water separator | 1 Set |
| 3. Flash steam | 1 Set |
| 4. Compressor unit | 3 Set |
| 5. Absorption tower | 1 Set |
| 6. Oxygen compression system | 1 Set |
| 7. Cold water system | 1 Set |
| 8. Dehydration device | 1 Set |
| 9. Instrument control system | 1 Set |
| 10. Electronic control system | 1 Set |
