Method of preparing granulated activated alumina
Patents
| Language: |
Английский |
| Type: |
Invention |
| Number |
US 4166100 A |
| Request number: |
909,977 |
| Request date: |
May 26, 1978 |
| patent.field.start_date: |
|
| Registration date: |
Aug 28, 1979 |
| patent.field.request_publication_date: |
|
| Authors |
Vorobiev Yu.K.
,
Badaev B.N.
,
Ljubushko G.I.
,
Levitsky E.A.
,
Boreskov G.K.
,
Andrushkevich M.M.
,
Baum B.A.
,
Pakhomov N.A.
,
Khomyakova L.G.
,
Khramov A.E.
,
Rodionova N.A.
,
Isaev B.N.
,
Knyazev V.M.
,
Moroz E.M.
,
Erofeev V.N.
,
Druzhinin I.P.
,
Shkrabina R.A.
|
| Affiliations |
|
The method of preparing granulated activated alumina consists in that alumina trihydrate is decomposed by bringing it in contact with a bed of a solid heat carrier having the temperature of 350° to 600° C., the contact time being from 0.05 to 0.5 second, to obtain a product of decomposition in the form of amorphous aluminium hydroxide. Said decomposition product is mixed with water into a suspension having the concentration of 100-500 g/liter, calculating with reference to alumin ium oxide, and hydrated at a temperature of 20°-100° C. vand the pH of 5 to 12 for 0.5 to 10 hours. The hydrated decomposition product is then treated with an acid, that can form water-soluble basic salts of aluminium, at a temperature of 20° to 150° C., granulated, dried at a temperature of 20° to 150° C., and calcined at a tempera ture of 400° to 600° C. The granulated activated alumina can be used as an adsorbing material, as a catalyst, or a support for active components in chemical and petrochemical industry.