FIELD: chemistry.
SUBSTANCE: invention relates to improved method of obtaining (meth)acrylic acid or (meth)acrolein, which includes process of catalytic gas-phase oxidation for obtaining (met)acrylic acid or (meth)acrolein by supplying propylene, propane or isobutylene and gas, containing molecular oxygen, into reactor, filled with catalyst, which contains composition of metal oxides, including Mo, where gas, containing molecular oxygen, is continuously supplied from outside on catalyst both during installation operation, and during stoppage of catalytic gas-phase oxidation process.
EFFECT: obtaining gaseous reaction product, which includes (meth)acrylic acid or (meth)acrolein, in which reduction of catalyst activity and selectivity of target product formation do not occur when installation operation is restarted after stoppage of catalytic gas-phase oxidation process.
2 cl, 2 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING (METH)ACRYLIC ACID OR (METH)ACROLEIN | 2004 |
|
RU2370483C2 |
| METHOD OF (METH)ACROLEINE OR (METH)ACRYLIC ACID PRODUCTION | 2004 |
|
RU2346929C2 |
| METHOD OF PRODUCING (MET)ACRYLIC ACID OR (MET)ACROLEIN | 2004 |
|
RU2349573C2 |
| METHOD FOR PRODUCTION OF (METH)ACROLEIN AND (METH)ACRLIC ACID COMPOUNDS | 2003 |
|
RU2279424C2 |
| AGGREGATE FOR (MET)ACRYLIC ACID OBTAINMENT AND METHOD OF (MET)ACRYLIC ACID OBTAINMENT | 2004 |
|
RU2355673C2 |
| METHOD OF OBTAINING (METH)ACROLEIN OR (METH)ACRYLIC ACID | 2004 |
|
RU2346735C2 |
| METHOD OF RECOVERING (METH)ACROLEIN OR (METH)ACRYLIC ACID AND INSTALLATION INTENDED FOR THIS PURPOSE | 2004 |
|
RU2353610C2 |
| METHOD FOR CATALYTIC OXIDATION IN VAPOR PHASE AND METHOD FOR PREPARING (METH)ACROLEIN OR (METH)ACRYLIC ACID | 2002 |
|
RU2309936C2 |
| METHOD OF PRODUCING (MET) ACRYLIC ACID AND COMPLEX (MET) ACRYLIC ESTERS | 2004 |
|
RU2349577C2 |
| METHOD OF CATALYTIC OXIDATION IN VAPOUR PHASE IMPLEMENTED IN MULTIPLE-TUBULAR REACTOR | 2003 |
|
RU2331628C2 |
