A method for recovering an inert substance and a method for producing acrylic acid using the inert substance recovered by the method.

Japanese Patent JP6349399

B2

The present invention provides a method for allowing a used inert material that has been subjected to a reaction once, which is disposed of in the background art, to be used again as well as a brand-new one. A method of recovering an inert material of the present invention is characterized by in the fixed-bed reactor, the inert material is loaded in an inert material layer provided between a first-stage catalyst layer and a second-stage catalyst layer, the first-stage catalyst layer is loaded with a first-stage catalyst for producing acrolein from propylene, and the second-stage catalyst layer is loaded with a second-stage catalyst for producing acrylic acid from acrolein, the method comprising the steps of: extracting the inert material from the fixed-bed reactor; washing the extracted inert material; and screening the washed inert material.

JP2592877	INDUSTRIAL APPLICABILITY [Title of Invention] Production of Improved Catalytic Particles Using Length Grade Evaluation
WO/2023/129924	PROCESSES AND APPARATUSES FOR REGENERATING A CATALYST
WO/2016/193478	METHOD FOR SORTING CONTAMINATED CATALYSTS OR ADSORBENTS

Yasuhiro Mimura
Munechika Shiro
Hisao Kakuda
Motoki Hisaga
Seiichi Hara

JP2016538413A

June 27, 2018

July 30, 2015

Click for automatic bibliography generation  

Nippon Shokubai Co., Ltd.

B01J38/72; B01J38/00; B01J38/64; C07C51/25; C07C57/05

JP2011504795A
JP2008024644A
JP11130722A
JP2007289810A
JP2005095874A
JP56073041A

WO2010032665A1

Kyuichi Ueki
Hisahiko Ueki
Tadashi Sugakawa
Hiroaki Ito

Previous Patent: A lighting installation and a display

Next Patent: ELECTRONICALLY CONTROLLED PRESS WORKING MACHINE