The present invention relates to the process for production of a polyol from palm oil and of rigid polyurethane foams prepared from said polyol derived from palm oil. On the one hand, this invention provides a method for obtaining monomeric polyols from palm oil that have hydroxyl number between 50 450 mgKOH/g sample. The polyols of the present application may be obtained by means of a procedure based on the following four mother routes: Route 1: maleinisation of the fatty acids of palm oil; Route 2: glycerolysis of palm oil; Route 3: trancesterification of palm oil; and Route 4: epoxidation of unsaturated carbon-carbon links of palm oil. Additionally, other modalities of the invention permit obtaining polyols from the combination of these mother routes. In other realizations of the invention polyurethanes are prepared from polyols obtained through any of the four routes or by combinations of the same.

The present invention relates to a process for producing high-grade fatty acid polyol esters, particularly fatty acid glycerol esters, and to the products thus prepared as well as to their respective uses and applications.

The present invention relates to a process for producing high-grade fatty acid polyol esters, particularly fatty acid glycerol esters, and to the products thus prepared as well as to their respective uses and applications.

A method of producing fatty acid alkyl ester from an organic oil source containing at least one free fatty acid, wherein the vegetable and/or animal waste oil has an acid number of at least 30 mg KOH/g and wherein the method comprises the steps of a) reacting the oil source with glycerol at a temperature, which is at least 110? C. and does not exceed 180? C. during the reaction, in the presence of a catalyst comprising at least methane sulfonic acid or the homo anhydride thereof; and b) acidic transesterification at a temperature, which is at least 110? C. and does not exceed 160? C. during the reaction of the reaction product from step a) with an alkanol; and c) isolating the fatty acid alkyl ester from the reaction product of step b).

A method of producing fatty acid alkyl ester from an organic oil source containing at least one free fatty acid, wherein the vegetable and/or animal waste oil has an acid number of at least 30 mg KOH/g and wherein the method comprises the steps of a) reacting the oil source with glycerol at a temperature, which is at least 110? C. and does not exceed 180? C. during the reaction, in the presence of a catalyst comprising at least methane sulfonic acid or the homo anhydride thereof; and b) acidic transesterification at a temperature, which is at least 110? C. and does not exceed 160? C. during the reaction of the reaction product from step a) with an alkanol; and c) isolating the fatty acid alkyl ester from the reaction product of step b).

The present invention describes a two stage process comprising a first stage of extraction of oils and/or fats with free fatty acids (FFA) from wastes originated in waste water treatment plants (WWTP), generally known as brown grease, grease traps, from WWTP of several food and dairy industries and from processing animal products, or other waste streams containing organic oils and/or fats and a second stage of conversion of the FFA obtained in the first stage into glycerol ester by a glycerolysis reaction without the presence of a catalyst.

The present invention describes a two stage process comprising a first stage of extraction of oils and/or fats with free fatty acids (FFA) from wastes originated in waste water treatment plants (WWTP), generally known as brown grease, grease traps, from WWTP of several food and dairy industries and from processing animal products, or other waste streams containing organic oils and/or fats and a second stage of conversion of the FFA obtained in the first stage into glycerol ester by a glycerolysis reaction without the presence of a catalyst.

Provided is a device for producing ultra-low sulfur biodiesel. The device for producing ultra-low sulfur biodiesel is a two-stage processing device, comprising a two-stage purification unit, a two-stage enzyme reaction unit, a two-stage distillation unit, and a decompression rectification unit. The present invention is green and environment-friendly, effectively and completely removing sulfur-containing impurities from the raw material, eliminating the attack of a sulfur-containing group in the synthesis process on fatty acids, and providing sufficient conditions for obtaining ultra-low sulfur content methyl esters in the product section.

The present invention describes a two stage process comprising a first stage of extraction of oils and/or fats with free fatty acids (FFA) from wastes originated in waste water treatment plants (WWTP), generally known as brown grease, grease traps, from WWTP of several food and dairy industries and from processing animal products, or other waste streams containing organic oils and/or fats and a second stage of conversion of the FFA obtained in the first stage into glycerol ester by a glycerolysis reaction without the presence of a catalyst.

The present invention describes a two stage process comprising a first stage of extraction of oils and/or fats with free fatty acids (FFA) from wastes originated in waste water treatment plants (WWTP), generally known as brown grease, grease traps, from WWTP of several food and dairy industries and from processing animal products, or other waste streams containing organic oils and/or fats and a second stage of conversion of the FFA obtained in the first stage into glycerol ester by a glycerolysis reaction without the presence of a catalyst.