CN-120444536-B - Hydrogen production and hydrogenation integrated station control method

CN120444536BCN 120444536 BCN120444536 BCN 120444536BCN-120444536-B

Abstract

The invention discloses a hydrogen production and hydrogenation integrated station control method which comprises hydrogen production equipment, a hydrogen buffer tank, a first-stage compressor, a first-stage hydrogen storage tank, a second-stage compressor, a second-stage hydrogen storage tank and hydrogenation equipment which are sequentially connected, wherein in the hydrogenation process, the hydrogen production equipment, the first-stage compressor, the second-stage compressor and the hydrogenation equipment are controlled to work according to the relation between the pressure of the hydrogen buffer tank, the first-stage hydrogen storage tank, the second-stage hydrogen storage tank and the pressure of the injected equipment when the injected equipment is operated and the allowable filling maximum pressure of the injected equipment, the first preset pressure, the second preset pressure, the maximum allowable working pressure of the second-stage hydrogen storage tank, the fourth preset pressure, the minimum air inlet pressure of the first-stage compressor, the maximum allowable working pressure of the first-stage hydrogen storage tank, the third preset pressure, the maximum allowable working pressure of the second-stage hydrogen storage tank and the minimum air inlet pressure of the second-stage compressor. The invention realizes the on-demand start and stop of hydrogen production, reduces loss, prolongs the service life of equipment, and reduces cost and hidden danger of production.

Inventors

WU LIUFENG
YU YONG
Xiu Longqing
SUN YONGKANG
ZHOU LI
LI HAILUN
WANG TIANXIANG
HAN DONG
ZHANG YANCHUN
WU QIAN

Assignees

上海能源建设工程设计研究有限公司

Dates

Publication Date: 20260508
Application Date: 20250509

Claims (2)

1. The hydrogen production and hydrogenation integrated station control method is characterized in that the hydrogen production and hydrogenation integrated station comprises hydrogen production equipment, a hydrogen buffer tank, a primary compressor, a primary hydrogen storage tank, a secondary compressor, a secondary hydrogen storage tank and hydrogenation equipment which are connected in sequence, and hydrogen is filled into a device needing hydrogen filling through the hydrogenation equipment; When hydrogenation starts, checking whether the pressure PT2 of the secondary hydrogen storage tank is more than or equal to a third preset pressure P7; If PT2 is more than or equal to P7, executing the steps A1 and A2, otherwise, executing the step C; A1, filling the filling equipment by the hydrogenation equipment; Step A2, monitoring the pressure PT2 of the secondary hydrogen storage tank and the pressure PT3 of the injection equipment, and comparing whether PT2 is larger than or equal to a first preset pressure P1; if PT2 is less than or equal to P1, executing the step C, otherwise, executing the steps B1 and B2; Step B1, adjusting the pressure PT3 of the filling device to be consistent with the maximum pressure P0 of the filling device which is allowed to be filled, and filling hydrogen into the filling device; Step B2, completing filling hydrogen, and closing the hydrogenation equipment; step C, checking whether the pressure PT1 of the primary hydrogen storage tank is larger than or equal to a second preset pressure P2; if PT1 is more than or equal to P2, executing the steps D1 and D2, otherwise, executing the step E; Step D1, starting the secondary compressor, and monitoring the pressure PT2 of the secondary hydrogen storage tank and the pressure PT1 of the primary hydrogen storage tank in real time; step D2, when the pressure PT2 of the secondary hydrogen storage tank is equal to the maximum allowable working pressure P3 of the secondary hydrogen storage tank or the pressure PT1 of the primary hydrogen storage tank is equal to the minimum inlet pressure P9 of the secondary compressor, closing the secondary compressor; Step E, checking whether the maximum pressure P0 allowed to be filled of the filling equipment is larger than or equal to a fourth preset pressure P4; If PT0 is more than or equal to P4, executing the steps F1 and F2, otherwise, executing the step G; step F1, starting the primary compressor, and monitoring the pressure PT1 of the primary hydrogen storage tank and the pressure PT0 of the hydrogen buffer tank in real time; f2, when the pressure PT1 of the primary hydrogen storage tank is equal to the maximum allowable working pressure P6 of the primary hydrogen storage tank or the pressure PT0 of the hydrogen buffer tank is equal to the minimum inlet pressure P5 of the primary compressor, closing the primary compressor; and G, starting the hydrogen production equipment, monitoring the pressure PT0 of the hydrogen buffer tank in real time, and closing the hydrogen production equipment when the PT0 reaches the maximum allowable working pressure P8 of the hydrogen buffer tank.
2. The hydrogen production and hydrogenation integrated station control method according to claim 1, wherein the third preset pressure P7 is 3MPa or more larger than a maximum pressure P0 allowed to be filled by the filling device, the first preset pressure P1 is 1MPa or more larger than the maximum pressure P0 allowed to be filled by the filling device, the second preset pressure P2 is 5MPa or more larger than a minimum intake pressure of the secondary compressor, and the fourth preset pressure P4 is 1MPa or more larger than a minimum intake pressure of the primary compressor.

Description

Hydrogen production and hydrogenation integrated station control method Technical Field The invention relates to the technical field of hydrogen energy storage and charging, in particular to a hydrogen production and hydrogenation integrated station control method. Background The existing hydrogen production station and the hydrogen adding station are separately controlled, the hydrogen adding speed depends on the reserve volume and the pressure of a hydrogen storage tank, the hydrogen production equipment and a compressor are started and stopped in disorder, the equipment loss is large, the pressure is monitored manually to start and stop the equipment, the response is delayed, and the following defects exist in the practical application: 1. the hydrogen production and the hydrogen supply and demand coordination are not coordinated enough, the traditional hydrogen station relies on a hydrogen storage tank to supply hydrogen, and the hydrogen supply deficiency or pressure fluctuation easily occurs in the hydrogen supply peak period, so that the hydrogen supply speed is reduced; 2. The hydrogen production equipment and the compressor are frequently started and stopped, or run for a long time under low load, so that the energy consumption is increased; 3. the system without coordination control can lead to the reduction of service life and the increase of cost and hidden troubles of production due to frequent start-up and stop or low-load operation of equipment such as compressors, electrolytic tanks and the like. 4. The operator manually judges the state of the equipment, and the equipment is started and stopped manually, so that the risk of misoperation is high. Therefore, how to realize the full-automatic operation of hydrogenation and hydrogen production linkage total stations, the disordered start and stop of equipment are reduced, the loss is reduced, the hydrogenation speed is improved, the service life of the equipment is prolonged, the manual operation is reduced, and the cost and the production hidden trouble are technical problems to be solved by the technicians in the field. Disclosure of Invention In view of the above-mentioned shortcomings of the prior art, the invention provides a hydrogen production and hydrogenation integrated station control method, which realizes hydrogenation and hydrogen production linkage total station full-automatic operation, reduces disordered start and stop of equipment, reduces loss, improves hydrogenation speed, prolongs the service life of the equipment, reduces manual operation, and reduces cost and hidden danger in production. In order to achieve the above purpose, the invention discloses a control method of a hydrogen production and hydrogenation integrated station, which comprises hydrogen production equipment, a hydrogen buffer tank, a primary compressor, a primary hydrogen storage tank, a secondary compressor, a secondary hydrogen storage tank and hydrogenation equipment which are connected in sequence, wherein hydrogen is filled into an injection device needing to be filled with hydrogen through the hydrogenation equipment; When hydrogenation starts, checking whether the pressure PT2 of the secondary hydrogen storage tank is more than or equal to a third preset pressure P7; If PT2 is more than or equal to P7, executing the steps A1 and A2, otherwise, executing the step C; A1, filling the filling equipment by the hydrogenation equipment; Step A2, monitoring the pressure PT2 of the secondary hydrogen storage tank and the pressure PT3 of the injection equipment, and comparing whether PT2 is larger than or equal to a first preset pressure P1; if PT2 is less than or equal to P1, executing step C, otherwise, executing steps B1 and B2 Step B1, adjusting the pressure PT3 of the filling device to be consistent with the maximum pressure P0 of the filling device which is allowed to be filled, and filling hydrogen into the filling device; Step B2, completing filling hydrogen, and closing the hydrogenation equipment; step C, checking whether the pressure PT1 of the primary hydrogen storage tank is larger than or equal to a second preset pressure P2; if PT1 is more than or equal to P2, executing the steps D1 and D2, otherwise, executing the step E; Step D1, starting the secondary compressor, and monitoring the pressure PT2 of the secondary hydrogen storage tank and the pressure PT1 of the primary hydrogen storage tank in real time; step D2, when the pressure PT2 of the secondary hydrogen storage tank is equal to the maximum allowable working pressure P3 of the secondary hydrogen storage tank or the pressure PT1 of the primary hydrogen storage tank is equal to the minimum inlet pressure P9 of the secondary compressor, closing the secondary compressor; Step E, checking whether the maximum pressure P0 allowed to be filled of the filling equipment is larger than or equal to a fourth preset pressure P4; If PT0 is more than or equal to P4, executing the steps F1 and F2, otherw