Petroleo Brasileiro S.a. - Petrobras

Int—instituto Nacional De Tecnologia

Raphael Bezerra De Menezes

Bernardo Galvão Siqueira

Carlos Rene Klotz Rabello

Marlito Gomes Junior

Wilson Kenzo Huziwara

William Victor Carlos Candido

Carlos René Klotz Rabello

Alexandre Barros Gaspar

Bernardo Galvao Siqueira

William Victor Carlos Cândido

Giselle De Carvalho Oliveira

Lígia Maria Marçareli De Oliveira

Tomas Shinobu Yamada

Andrea Maria Duarte De Farias

Simone Maria De Rezende

Tatiana Vieira Galvão

Marco André Fraga

Marlito Gomes, Jr

Tatiana Vieira Galvao

Marlito Junior Gomes

Ligia Maria Marcareli De Oliveira

A two-step 2.5 FDCA integrated production process is described, comprising a first step for generating 5-HMF from streams comprising an aqueous carbohydrate solution wherein sub-critical water works as a catalyst by dehydrating the carbohydrates and generating 5-HMF, and a second step wherein 5-HMF is oxidized into 2.5 FDCA.

2.5-furandicarboxylic acid integrated production process

This invention concerns a process for obtaining lactic acid in a single stage by direct oxidation in an aqueous medium of 1,2-propanediol in the presence of a mixture of heterogeneous catalysts, in conditions of low temperature and low pressure. The reaction takes place in the presence of oxygen and a mixture of heterogeneous catalysts, consisting of a first catalyst of noble metal supported in metallic oxide, and a second basic solid catalyst. The mixture of catalysts is easily recovered by filtration at the end of the process, to be reused. The lactic acid is obtained directly, with selectivity between 50% and 97%.

Lactic acid direct synthesis process

The present invention describes a process for the production of propylene glycol from glycerol, the transformation of purified glycerol to propylene glycol being carried out by means of a reaction of hydrogenolysis, in the liquid phase, where the two stages of the reaction take place simultaneously and in one and the same reactor () under specified conditions of temperature and pressure, and the effluent from the fixed-bed reactor () is led to subsequent process stages that comprise separation and purification.

Production of propylene glycol from glycerine

A method to exploit the glycerin obtained as a by-product of the industrial process to produce biodiesel inside or out of the industrial production unit, providing a reduction in the environmental liability that may be caused by an excess in the production of glycerin that cannot be exploited for industrial use. The referenced method uses recycling of the glycerin obtained through industrial process to produce biodiesel, using a process basically consisting of four stages: a) extracting glycerin produced as a by-product of the industrial process for producing biodiesel; b) hydrogenation of said n-propanol glycerin, c) recycling of the n-propanol thus obtained to be added to a mixture of alcohols; and d) transesterfication of the n-propanol mixture added to the alcohol mixture, together with raw material triglycerides from renewable sources in order to obtain biodiesel. The referenced recycling of the n-propanol stream provides a reduction in the amount of the alcohol mixture necessary for the industrial process to produce biodiesel, consequently reducing operational costs.

Method for recycling and exploitation of the glycerin obtained in the production of biodiesel

Growing community of inventors

Rio de Janeiro, Brazil

Raphael Bezerra De Menezes