Abstract:

A study is conducted on the technology and process of constructing pipeline hydrogen supply station of refinery enterprises relying on by-product hydrogen resources. Optimization design measures have been proposed to simplify process, save investment and reduce energy consumption. Research has found that after cancelling the hydrogen storage bottle group, the control cabinet system, and pre-cooling process of the hydrogenation dispenser in the hydrogen station, it can still meet the safety requirements that the temperature inside the on-board hydrogen cylinder should not exceed 85 ℃ during filling hydrogen-powered vehicles, and at the same time meet the requirements of hydrogen filling efficiency and better user experience. Compared to the 2,000 kg per 12 hours pipeline hydrogen supply station with the same pressure grade and function in the conventional typical process, the optimized 3,000 kg per 12 hours pipeline hydrogen supply station with 35 MPa pressure grade reduces the investment in major equipment per unit of hydrogen filling scale by more than 50%, decreases the installed power from 1,025 kW to 630 kW, a reduction of 38.5%; the major energy consumption reduces from 6.15 kW·h/kg to 2.52 kW·h/kg, which is more than 50%.

Key words: refinery enterprise, pipeline hydrogen supply, hydrogen station, filling process, on-board hydrogen cylinder, investment, energy consumption

摘要：

对炼化企业依托副产氢资源，建设管道供氢加氢站的技术和流程进行研究，提出了简化流程、节省投资、降低能耗等方面的设计优化措施。取消加氢站内储氢瓶组、顺控柜系统、加氢机预冷流程后，仍可满足加氢站进行氢能车辆加氢时车载瓶内温度不超85℃的安全要求，同时可满足加注效率和较好的用户体验要求。优化设计的35 MPa压力等级的3 000 kg/12 h管道供氢加氢站，较常规典型流程的同样压力等级和功能的2 000 kg/12 h管道供氢加氢站：单位加氢规模的站内主要设备投资降低50%以上；单位加氢规模的主要设备装机功率由1 025 kW降至630 kW,降幅38.5%;单位加氢规模的主要能耗由6.15 kW·h/kg降至2.52 kW·h/kg,降幅50%以上。

关键词: 炼化企业, 管道供氢, 加氢站, 加注流程, 车载瓶温升, 投资, 能耗