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- Title
天然气压差发电技术在地下储气库的应用.
- Authors
朱力洋; 熊 波; 王志军; 邹 银; 钟明朗
- Abstract
During the gas production of underground gas storage (hereinafter referred to as "gas storage"), flow rate and pressure difference are larger. The currently designed pressure regulating process causes larger pressure loss and noise. In order to make full use of the pressure difference of gas storages and improve the energy utilization efficiency of natural gas, this paper applies the natural gas pressure differential power generation technology which is widely used in China to Xiangguosi gas storage project of PetroChina Southwest Oil & Gasfield Company. Then, the feasibility of applying turbo expander to power generation in Xiangguosi gas storage is demonstrated. Finally, the way out of surplus electricity is discussed and the gas-electricity dual storage mechanism is established. And the following research results were obtained. First, thermodynamic calculation results show that the net power generation capacity per hour will be 1 747 kWh, the annual power generation will be 611×104 kWh and the electricity cost will be saved by 301×104 yuan if one 1800 kW turbo generator is installed at Xiangguosi gas storage. Second, the electricity consumption of gas storage during gas production is less, so there is a large amount of surplus electricity, whose sales problem can be solved by cooperating with the State Grid. Third, in the process of practical application, the pressure differential power generation technology still has some problems to solve, such as the sealing problem of the expander. The noise is larger when the turbo expander runs at high speed. In conclusion, the pressure differential power generation project of Xiangguosi gas storage has the advantages of less investment and better economic benefits, which is an important technical means to achieve energy saving, consumption reduction, green development, quality and efficiency improvement in the natural gas industry. What’s more, this project has a better demonstration effect and is of better popularization value.
- Subjects
CHINA; GAS industry; GAS storage; NATURAL gas; PROBLEM solving; ELECTRIC power consumption; GREEN technology
- Publication
Natural Gas Industry, 2021, Vol 41, Issue 3, p142
- ISSN
1000-0976
- Publication type
Article
- DOI
10.3787/j.issn.1000-0976.2021.03.017