| 摘要 |
PROBLEM TO BE SOLVED: To improve responsiveness of a hydrogen producing system. SOLUTION: This system is constituted so as to vaporize the liquid raw materials in an evaporating part, modify the quality of vapor in a modifying part and produce hydrogen. A pressure adjusting valve to adjust the pressure in the evaporating part is provided somewhere between the evaporating part and the downstream of the modifying part. When the demand for hydrogen increases, the pressure in the evaporating part is decreased by controlling the valve. The vaporization in the evaporating part accelerates and a generation rate of vapor can improve by means of the decrease of pressure. Moreover, when the system starts, a control mode is changed so that the valve is opened in order to relieve an increase rate of pressure immediately after the improved gas begins to create. |
