Patent ID: 11964262
Assignee: RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 17:
18. The process according to claim 17, wherein the phosphorus-aluminum inorganic binder comprises a first clay-containing phosphorus-aluminum inorganic binder that contains a first clay and a phosphorus-aluminium inorganic binder, and the process further comprises: preparing the first clay-containing phosphorus-aluminum inorganic binder by:
mixing an alumina source, the first clay, and water into a slurry with a solid content of 5-48 wt %, wherein the alumina source is aluminum hydroxide and/or alumina capable of being peptized by an acid, and the first clay is used in an amount of more than 0 part by weight and not more than 40 parts by weight on a dry basis, relative to 15-40 parts by weight of the alumina source calculated as Al2O3; and
adding concentrated phosphoric acid into the slurry at a weight ratio of P/Al=1-6 under stirring, and reacting the slurry at 50-99° C. for 15-90 minutes, wherein P represents the weight of phosphorus in the phosphoric acid calculated as an element phosphorus, and Al represents a weight of aluminum in the alumina source calculated as an elemental aluminum.