METHOD FOR PRODUCING INDUSTRIAL GAS BY USING PRESSURE- VARIED ADSORPTIVE SEPARATION APPARATUS

• Main Authors: HAYANO HIROSHI, KAMAKURA YUKIHIRO, TSURUTA TETSUYA, KUSAKA RYOHEI, SUGAYA TOMOKI
• Format: Patent
• Language: English
• Published: 10.10.2001
• Edition: 7
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; FUELS; INORGANIC CHEMISTRY; LUBRICANTS; METALLURGY; NON-METALLIC ELEMENTS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLEGASES CONTAINING CARBON MONOXIDE; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a method for producing an industrial gas by using PSA apparatus, capable of more correctly controlling load of PSA apparatus, following used amount of gas of a gas user. SOLUTION: In this method for producing an industrial gas by using PSA apparatus, pressure fluctuation in a product gas holclet is measured and pressure (Pn) after correction of average value of variation of the product gas holder is obtained based on the measured value and apparatus load on PSA apparatus is obtained based on pressure after correction of average value of variation and preceding variation of apparatus load on PSA apparatus is obtained based on measured value of pressure fluctuation of the product gas holder and weight coefficient in operation of apparatus load and preceding variation of the apparatus load is added to the apparatus load obtained based on the pressure (Pn) after correction of average value of variation to provide preceding apparatus load, and introduction amount of raw material gas to the PSA apparatus and required time of each step are controlled based on the preceding apparatus load.