Nova Chemicals (international) S.a.

Nova Chemicals Inc.

Aleksey Victorovich Kucherov

Leonid Modestovich Kustov

Elena Dmitrievna Finashina

Vasily Simanzhenkov

Xiaoliang Gao

David Jeffrey Sullivan

Edward Christopher Foy

Hanna Drag

Claire Jeannine Ennis

Andrzej Z Krzywicki

Andrzej Krzywicki

Shahin Goodarznia

Kamal Elias Serhal

Haiyong Cai

Tatyana Nikolaevna Kucherova

Vera Ilynichna Isaeva

The oxidative dehydrogenation of ethane comprises contacting a mixture of ethane and oxygen in an ODH reactor with an ODH catalyst under conditions that promote oxidation of ethane into ethylene. Conditions within the reactor are controlled by the operator and include, but are not limited to, parameters such as 5 temperature, pressure, and flow rate. Conditions will vary and can be optimized for a specific catalyst, or whether an inert diluent is used in the mixing of the reactants. Disclosed herein is a catalyst consisting of: MoWVTeFeNbOwhere X is determined by the valance of the metals.

ODH catalyst formulations

A catalyst for oxidative dehydrogenation (ODH) of ethane with an empirical formula Mo&#x2014;V&#x2014;Te&#x2014;Nb&#x2014;Pd&#x2014;O produced using a process comprising impregnation of the Pd component on the surface of the catalyst following a calcination step using a Pd compound free of halogens. The resulting catalyst can be used in both diluted and undiluted ODH processes and shows higher than expected activity without any loss of selectivity.

Catalyst for ethane ODH

Oxidative dehydrogenation catalysts comprising MoVNbTeO having improved consistency of composition and a 25% conversion of ethylene at less than 420&#xb0; C. and a selectivity to ethylene above 95% are prepared by treating the catalyst precursor with HOin an amount equivalent to 0.30-2.8 mL HOof a 30% solution per gram of catalyst precursor prior to calcining.

Oxidative dehydrogenation catalyst

Ethane may be catalytically oxidatively dehydrogenated to ethylene at high conversions and high selectivity in a circulating fluidized bed (CFB) reactor in the presence of oxygen in the feed in an amount above the flammability limit. The reactor has an attached regeneration reactor to regenerate the catalyst and cycle back to the CFB.

High conversion and selectivity ODH process

Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.

Complex comprising oxidative dehydrogenation unit

In the operation of an oxidative dehydrogenation (ODH) process, it is desirable to remove oxygen in the product stream for a number of reasons, including to reduce oxidation of the product. This may be achieved by having several pre-reactors upstream of the main reactor having a catalyst system containing labile oxygen. The feed passes through one or more reactors saturated with labile oxygen. When the labile oxygen is consumed through a valve system, the pre-reactor accepts product from the main reactor and complexes reactive oxygen in the product stream until the catalyst system is saturated with labile oxygen. Then the reactor becomes a pre-reactor and another pre-reactor becomes a scavenger.

Inherently safe ODH operation

The present invention provides a process for the manufacture of an efficient and robust catalyst for the oxidative dehydrogenation of paraffins to olefins, preferably lower Cparaffins. The present invention provides a process for the preparation of an oxidative dehydrogenation catalyst of Cparaffins to olefins comprising comminuting: from 10 to 99 weight % of a mixed oxide catalyst of the formula VMoNbTeMeO, wherein Me is a metal selected from the group consisting of Ta, Ti, W, Hf, Zr, Sb and mixtures thereof; with from 90 to 1 weight % of an inert matrix selected from oxides of titanium, zirconia, aluminum, magnesium, yttria, lantana, silica and their mixed compositions or a carbon matrix to produce particles having a size from 1 to 100 microns and forming the resulting particles into pellets having a size from 0.1 to 2 mm.

Supported oxidative dehydrogenation catalyst

The present invention provides a continuous process for the oxidative dehydrogenation of ethane to ethylene using a mixed oxide catalyst supported onto a ceramic membrane by supplying an oxygen containing gas (air or pure oxygen) and pure ethane to the opposite sides of the membrane, so that the paraffin and the oxygen do not directly mix in the reactor.

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Moscow, Russia

Aleksey Victorovich Kucherov