Title:
MANUFACTURING EQUIPMENT OF CATALYST FOR PRODUCING (METH)ACRYLIC ACID AND MANUFACTURING METHOD OF CATALYST FOR PRODUCING (METH)ACRYLIC ACID
Document Type and Number:
Japanese Patent JP2023147925
Kind Code:
A
Abstract:
To provide a catalyst for producing (meth)acrylic acid having stable catalyst activity throughout the seasons.SOLUTION: A firing device 10 comprises: a compressor 12 that takes in and compresses outside air; a dehumidifier 13 that is connected to the compressor by first piping 11a and dehumidifies the outside air compressed by the compressor; a heater 14 that is connected to the dehumidifier by second piping 11b and heats the outside air dehumidified by the dehumidifier; and firing furnace 15 that is connected to the heater by third piping 11c, is supplied with the outside air heated by the heater and fires a precursor of a catalyst for producing (meth)acrylic acid including a heteropolyacid compound including phosphorus and molybdenum; and a steam generator 16 that is connected to either one or both the second piping and the third piping connected by a fourth piping 11da and 11db, and supplies steam to either one or both of the second piping and the third piping to adjust a water content of the mixed gas to be supplied to the firing furnace.SELECTED DRAWING: Figure 2
Inventors:
YOSHIMURA KAZUAKI
EBINA NORIHIRO
SUYASU NORIAKI
EBINA NORIHIRO
SUYASU NORIAKI
Application Number:
JP2022055709A
Publication Date:
October 13, 2023
Filing Date:
March 30, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
B01J27/199; B01J37/00; B01J37/04; B01J37/10
Attorney, Agent or Firm:
Sakai International Patent Office