Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Agro Industrie Recherches Et Developpements

L'institut National De La Recherche Agronomique

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement

Sylvain Louret

Vincent Coupard

Philibert Leflaive

Gerard Paul Hotier

Sylvie Lacombe

Laurent Simon

Patrice Font

Frederic Augier

Eric Sanchez

Fadhel Ben Chaabane

Caroline Aymard

Eszter Toth

Stephanie Fleurier

Larissa Perotta

Alain Forestiere

Florent Picard

Matthieu Rolland

Pierre-Antoine Bouillon

Romain Rousset

Reynald Bonneau

Gérard Hotier

Frédéric Augier

Pierre Antoine Bouillon

Eric Sancheż

Frederic Aügier

Stéphanie Fleurier

The invention concerns a process for deactivating a cellulolytic microorganism enabling the production of an enzymatic cocktail, said cocktail being used without separating the cellulolytic microorganism during the biochemical conversion of lignocellulosic materials, comprising at least one step for bringing a gaseous stream into contact with a medium containing said microorganism, said gaseous stream comprising more than 25% by weight of COand comprising less than 0.5 molar % of O.

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A process for the production of an enzymatic cocktail with a cellulolytic microorganism comprises two phases:

Process for the production of an enzymatic cocktail using liquid residues from a process for the biochemical conversion of lignocellulosic materials

The present invention concerns a process for the production of an enzymatic cocktail by submerged culture with a cellulolytic microorganism, comprising two phases:

Process for the production of an enzymatic cocktail using solid residues from a process for the biochemical coversion of lignocellulosic materials

The process for the production of alcohol and/or solvent from a biomass feedstock comprises the stages for pretreatment (P) of the biomass feedstock, for enzymatic hydrolysis (Hand HF), and for fermenting the hydrolyzate (HF). To prevent solids from being sent and to facilitate operating the section for purifying the fermentation products, at least a portion of the solid material in the fermentation wine is extracted (Ex) to obtain a stream of solid residue () comprising lignin and a fermentation wine () that is low in solid material. Then, the stream of solid residue is washed (L) with a liquid stream to recover a liquid stream that is enriched with fermentation products (). The liquid stream that is enriched with fermentation products () is recycled in the enzymatic hydrolysis stage (H) to recover any fermentation product and to increase the overall yield of the process.

Method for producing alcohols and/or solvents from lignocellulosic biomass with washing of the solid residue obtained after fermentation

The present invention concerns a production of liquefied lignocellulosic substrate by enzymatic reaction. 10% to 40% by weight dry matter of pre-treated lignocellulosic substrate is contacted, with water and enzymes at 0.1 to 60 mg of enzymes per gram of cellulose for a period of 1 to 24 hours. Over time, at least the value of one of the rheological characteristics of the reaction medium is measured. If a reduction of the value is detected over time, the following step a) is carried out:

Process for the production of optimised liquefied lignocellulosic substrate

The invention relates to a process for production of propylene from a C4/C5 olefin cut (for example from steam cracking and/or catalytic cracking), this process comprising an optional selective hydrogenation, a selective oligomerization of the isobutenes and an oligocracking of the n-butenes. The invention makes it possible to obtain a high conversion rate with a good propylene yield and to maximize the production of good-quality gasoline.

Process of direct conversion of a charge comprising olefins with four and/or five carbon atoms, for the production of propylene with co-production of gasoline

The process for the production of alcohol and/or solvent from a biomass feedstock comprises the stages for pretreatment (P) of the biomass feedstock, for enzymatic hydrolysis (H) of the pretreated substrate, and for fermenting the hydrolyzate (F). To reduce the size of the fermenters, at least a portion of the solid residue contained in the hydrolyzate is extracted (Ex) in such a way as to obtain a stream of solid residue () comprising lignin and a hydrolyzate () that is low in solid residue. Then, the stream of solid residue is washed (L) with a liquid stream in such a way as to recover a sugar-enriched liquid stream (). The sugar-enriched liquid stream () is recycled in the enzymatic hydrolysis stage (H) to be able to upgrade the sugars without providing dilution of the streams in the process.

Process for the production of alcohols and/or solvents from lignocellulosic biomass with washing of the solid residue obtained after hydrolysis

A process and a unit for fluidized bed torrefaction and grinding of particles of a biomass with a largest dimension of 2 cm to 5 cm, and which unit contains an envelope having a general shape of a sector having a) two substantially vertical walls delimiting that sector; and b) at least one inclined wall defining three zones, from bottom to top: a lower zone provided with a fluidization means, and provided with a grinder placed at the bottom of that zone; an intermediate zone (2) provided with a fluidization means; and an upper zone (3) provided with a fluidization means; and a pipe () for introducing the particles reaching into the unit to the level of the intermediate zone.

Process and device for fluidized bed torrefaction and grinding of a biomass feed for subsequent gasification or combustion

An axial flow staged zone oligomerization reaction process includes the steps of passing a hydrocarbon feedstock into the lower portion of the axial flow staged zone reactor which includes axial circulation of the hydrocarbon reaction fluid serially in each of the reaction zones, passing catalyst through a constriction zone located between successive upper and lower catalytic reaction zones which includes heat exchanging of the fluids being the constriction zone within the reactor and further includes withdrawing the oligomerized product from the top of the reactor.

Multi-zone fixed-bed or moving-bed reactor with an integrated heat exchanger

The invention concerns a process and apparatus for treating a feed comprising ethylenic and acetylenic compounds. In the process of the invention, the feed is sent to a distillation step, a C4 cut and a C5+ cut are recovered, a drawn fraction comprising acetylenic compounds is treated in at least one hydrogenation step, and an effluent which is depleted in acetylenic compounds is recycled. The distillation step comprises:

Process and apparatus for treating a feed comprising butadiene

A process and the use of a process for desulphurizing a hydrocarbon feed is described which comprises at least one of the following steps:

Desulphurization process comprising a transformation step and a step for extracting sulphur-containing compounds

This invention relates to a staged-zone reactor of the axial-flow type that makes it possible to implement strongly endothermic or exothermic reactions. The reactor comprises a constriction of the catalytic bed between an upper zone () and a lower zone (), making it possible to house in the reactor a heat exchanger for the intermediate heating or cooling of the effluents. Process of chemical conversion using this reactor for exothermic or endothermic reactions in the gas and/or liquid phase, and in particular for the oligomerization reaction of C2 to C12 fractions for the purpose of producing a diesel fraction.

A reaction device includes staged zones making it possible to implement strongly endothermic or exothermic reactions. The device reduces the differences in catalytic activity between these zones using an addition of fresh or regenerated catalyst at the inlet of each reaction zone and provides an integrated heat exchanger. A process of chemical conversion employs the device for gas-phase and/or liquid-phase exothermic or endothermic reactions, and in particular for the oligomerization reaction of C2 to C12 fractions for the purpose of producing a diesel fraction.

Multi-zone moving-bed reaction device with an addition of regenerated or fresh catalyst in each zone

The invention concerns a simulated moving bed (SMB) separation device and process comprising a column, beds Aof adsorbent separated by plates Pwith a single distribution and extraction network for fluids, in particular feed F, desorbant D, raffinate R and extract E, and a plurality of two-way valves for distribution of said fluids, said valves being limited in number and in particular with dimensions that are smaller than in the prior art. According to the invention, the column is divided into a plurality of sectors Swith 2 superimposed plates, each sector Scomprising an external principal bypass line Lconnected to each plate Pof Svia a large diameter plate valve Vand an external secondary bypass line Mcomprising a small diameter valve Vconnected to the adjacent sector S. Each line Lcomprises a flow limitation means, and is connected to each of the fluid networks F, D, R, E via a single large diameter valve for sequential supply or withdrawal of the corresponding fluid F, D, R or E to or from the sector Sk under consideration.

Process and device for simulated moving bed separation with a reduced number of large diameter valves

A simulated moving bed (SMB) separation device comprising a column, beds Ai of adsorbent separated by plates Pi with a single distribution and extraction network for fluids, in particular feed F, desorbant D, raffinate R and extract B, and a plurality of two-way valves for distribution of said fluids, said valves being limited in number compared with the prior art. The column is divided into a plurality of sectors Sk with 2 or 3 superimposed plates, each sector Sk comprising an external bypass line Lk connected to each plate Pi of Sk via a connector comprising a plate valve Vi. Each line Lk comprises a controlled means for limiting its internal flow, and is connected to each of the fluid networks F, D, R, E via a single line comprising a single controlled two-way isolation valve to supply for sequential supply or withdrawal of the corresponding fluid F, D, R or E towards or from the sector Sk under consideration. The SMB device may be used for the separation of para-xylene or meta-xylene from an aromatic C8 cut.

Growing community of inventors

Lyons, France

Sylvain Louret