CONTROL OF PRODUCTION AMOUNT OF HYDROGEN IN HYDROGEN PRODUCTION DEVICE

• Main Authors: USU TOYOFUMI, ZENINO NORIO
• Format: Patent
• Language: English
• Published: 09.03.1988
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

PURPOSE:To produce hydrogen in an amount corresponding to load while minimizing waste consumption, by adding time lag element to a pressure regulator depending upon pressure variability at the outlet of a hydrogen production device, controlling a flow rate of raw material and regulating the amount of hydrogen discharged out of the system. CONSTITUTION:A raw material consisting of off-gases 1 and 2 and hydrocarbons such as naphtha, etc., is heated by a furnace 1 and desulfurized by a desulfurizing column 2. Then the raw material is reformed with steam by a reforming furnace 3 and further formed CO2 is removed by a decarboxylation device 4 to give hydrogen. In the hydrogen production device having the constitution, load variability is detected by a pressure detector P3 set at the outlet side of the device. The detected output is inputted in parallel to pressure regulators C4 and C5 having different et values. Time lag element X is added to one pressure regulator C5 having a lower pressure set value and a flow rate of the raw material at the inlet side of the desulfurizing device is controlled by regulators C1 and C2. And simultaneously the amount of hydrogen discharged out of the system, such as flare, etc., is controlled by the other pressure regulator C4 having a higher pressure set value.