FIELD: chemistry.
SUBSTANCE: invention concerns improved method of obtaining at least one product of partial propylene oxidation and/or ammoxidation, propylene selected out of group including propyleneoxide, acrolein, acrylic acid and acrylnitryl, where source substance is propane. Method involves a) at the first stage, homogeneous and/or heterogeneous catalysed dehydration and/or oxydehydration of raw propane in the presence and/or in the absence of oxygen, to obtain gas mix containing propane and propylene; and b) if required, separation of part gas mix 1 obtained at the first stage and its components other than propane and propylene, such as hydrogen, carbon monoxide, or transformation of this part in the other compounds, such as water, carbon dioxide, so that gas mix 1' containing propane and propylene and compounds other than oxygen, propane and propylene is obtained from gas mix 1; and at least one more stage c) heterogeneous catalysed ammoxidation and/or partial gas phase ammoxidation of propylene containing in gas mix 1 and/or gas mix 1' in gas mix 1 or gas mix 1' containing molecular oxygen of gas mix 2, where total C4-hydrocarbon content in gas mix 2 is < 3 volume %.
EFFECT: reduced process performance due to reduced output of target product and enhanced selectivity of carbon oxide generation at the second process stage.
50 cl, 10 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CONTINUOUS, HETEROGENEOUSLY CATALYSED PARTIAL DEHYDROGENATION OF AT LEAST ONE DEHYDROGENATED HYDROCARBON | 2006 |
|
RU2436757C9 |
| METHOD OF PRODUCING AT LEAST ONE END PRODUCT VIA PARTIAL OXIDATION AND/OR OXIDATION OF PROPYLENE IN AMMONIA MEDIUM | 2006 |
|
RU2448946C2 |
| METHOD OF PRODUCING AT LEAST ONE PRODUCT OF PARTIAL OXIDATION AND/OR AMMOXIDATION OF HYDROCARBON, CHOSEN FROM GROUP, CONTAINING ACROLEIN, METHACROLEIN, ACRYLIC ACID, METHACRYLIC ACID, ACRYLONITRILE AND METHACRYLONITRILE | 2004 |
|
RU2356881C2 |
| METHOD OF REGNERATING CATALYST LAYER DEACTIVATED DURING HETEROGENEOUSLY CATALYSED PARTIAL DEHYDROGENATION OF HYDROCARBON | 2008 |
|
RU2456075C2 |
| METHOD OF LOWERING FLASH POINT TEMPERATURE OF FIXED CATALYST BED DURING SYNTHESIS OF ACROLEIN OR ACRYLIC ACID OR MIXTURE THEREOF VIA HETEROGENEOUSLY CATALYSED GAS-PHASE PARTIAL OXIDATION | 2005 |
|
RU2416595C2 |
| METHOD FOR PREPARING ACROLEIN OR ACRYLIC ACID OR THEIR MIXTURE FROM PROPANE | 2001 |
|
RU2312851C2 |
| METHOD OF PRODUCING ACROLEIN, ACRYLIC ACID OR MIXTURE THEREOF FROM PROPANE | 2006 |
|
RU2429218C2 |
| METHOD OF OBTAINING, AT LEAST, ONE PRODUCT OF PARTIAL OXIDATION AND/OR AMMOXIDISING OF PROPYLENE | 2003 |
|
RU2347772C2 |
| METHOD OF CONTINUOUS HETEROGENEOUSLY CATALYZED PARTIAL DEHYDROGENATION | 2003 |
|
RU2301219C2 |
| METHOD TO PRODUCE ACROLEIN OR ACRYLIC ACID OR THEIR MIXTURE FROM PROPANE | 2007 |
|
RU2452724C2 |
