GAS PURIFICATION METHOD

• Main Authors: YASUDA MASAHIRO, ASANO HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 16.03.2017
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To provide a gas purification method capable of enhancing the removal ratio of a processed gas component, by easily and inexpensively promoting oxidation of the processed gas component included in processed gas.SOLUTION: A gas purification method includes: a first processing process S21 of breaking through by adsorbing NOto zeolite by ventilating processing gas including nitrogen oxide NOin the zeolite; a second processing process S22 of removing NOadsorbed in the first processing process by heating the zeolite processed in the first processing process; an oxidation processing process S2 of oxidizing NOof at least a part included in processed gas by ventilating the processed gas G1 to the zeolite processed in the second processing process; and an adsorption process S3 of removing NOoxidized by the oxidization processing process.SELECTED DRAWING: Figure 1 【課題】簡易かつ安価に被処理ガスに含まれる被処理ガス成分の酸化を促進し、被処理ガス成分の除去率を高めることができるガス浄化方法を提供する。【解決手段】ガス浄化方法は、ゼオライトに窒素酸化物ＮＯＸを含む処理用ガスを通気することにより、ゼオライトにＮＯＸを吸着させて破過させる第１処理工程Ｓ２１と、第１処理工程において処理されたゼオライトを加熱することにより、第１処理工程において吸着されたＮＯＸを除去する第２処理工程Ｓ２２と、第２処理工程において処理されたゼオライトに被処理ガスＧ１を通気することにより、被処理ガスに含まれる少なくとも一部のＮＯＸを酸化させる酸化処理工程Ｓ２と、酸化処理工程によって酸化されたＮＯＸを除去する吸着工程Ｓ３と、を含んでいる。【選択図】図１