16 results about "Solvolysis" patented technology

A process for producing 1,4-cyclohexanedimethanol by depolymerizing one or more recycled terephthalate-based polyesters or copolyesters via solvolysis with one or more glycols or alcohols and contacting the depolymerization product with an ester hydrogenolysis catalyst and hydrogen to produce a hydrogenolysis product and contacting the hydrogenolysis product with a hydrogenation catalyst and hydrogen to produce 1,4- cyclohexanedimethanol.

Described herein are devices and methods for the efficient and economic generation of lignin monomers from biomass. The provided devices and methods utilize reductive catalytic fractionation with an organic solvent to extract high-quality lignin from biomass and cleave specific lignin bonds to generate valuable lignin monomers with a relatively narrow product slate. Advantageously, the devices and methods described herein utilize solvent recycling, multiple solvolysis chambers with multiple biomass beds and / or physical agitation (e.g., use of a screw extruder) to reduce the amount of solvent required and increase economic efficiency and monomer yield.

The present invention relates to metallic nanoparticles stabilized by a diamondoid ligand. Nanoparticles, and networks of nanoparticles, of controlled small sizes below 10 nm, are used and recycled for the efficient delivering, in high rate, of hydrogen gas H2, extracted from solid organic sources in hydrolysis and solvolysis reactions.

The invention discloses a neutralization deacidification regeneration method and system for an acidified organic solvent and cleaning equipment, and relates to the technical field of industrial cleaning solvent regeneration. The method comprises the following steps: pre-treating an acidified organic solvent, and removing impurities; mixing the pretreated solvent with a neutralizer solution, and carrying out a neutralization reaction, wherein the neutralizer comprises an alkaline component for neutralizing acidic substances; separating the mixed system after the neutralization reaction to obtain an organic phase; and dehydrating and purifying the organic phase to obtain the regenerated organic solvent. According to the invention, the obvious defects existing in the treatment mode in the current industry are overcome: direct addition of a neutralizer and direct addition of an alkaline neutralizer into cleaning equipment, but uniform mixing is difficult, local over-alkalinity is often caused to cause solvent decomposition, and generated salts are easy to block a precision filter; and when the acid value seriously exceeds the standard, only the solvent in the whole tank needs to be replaced, a large amount of hazardous waste is generated, and the treatment cost is increased.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

The present invention relates to a rubber mixture comprising a polyester having at least one saturated and unsaturated monomer, which rubber mixture can be processed into a rubbery vulcanized product, which rubbery vulcanized product is degradable by the contained ester bonds, and to a method for producing the rubber mixture. The invention also relates to a recovery process comprising a solvolysis step, a separation and purification step and a repolymerization of the resulting monomers and / or oligomers.

Method for the reprocessing of a poly(meth)acrylate-containing adhesive mass, comprising the following process steps: a) Manufacturing or providing a starting composition comprising one or more poly(meth)acrylates, each comprising a plurality of organic residues linked via an ester bond -OR 1i , where R 1i For each residue i, independently of the other residues, is selected from the group consisting of linear and branched hydrocarbon residues with 1 to 25 carbon atoms, b) Combining the starting composition with a solvolysis composition comprising one or more solvolyses, wherein the solvolyses are selected from the group consisting of water, monohydric alcohols of the formula HO-R 2i , where R 2i selected is from the group consisting of linear and branched hydrocarbon residues with 1 to 3 carbon atoms, where R 2i at least partially from R1i is different, and higher alcohols with 2 or 3 carbon atoms, to obtain a reaction composition, and c) Performing solvolysis by cleaving ester bonds to the organic residues -OR 1i in the poly(meth)acrylates contained in the reaction composition, to obtain a product composition, comprising: i) one or more recovered alcohols of the formula HO-R 1i , and ii) one or more reaction products of the poly(meth)acrylates with the solvolyzing agent(s), d) Separating the recovered alcohols from the product composition.

The present disclosure relates to solvolysis of a substantially solid renewable feedstock (10) comprising forest industry residue(s). More in detail the disclosure relates to a process for converting substantially solid renewable feedstock (10) to renewable liquid product(s), wherein the process comprises feedstock conditioning (100); which comprises one or more of washing, mechanical dewatering (101), thermal drying (102) and pretreatment (103) in the presence of solvent (20) to obtain a feed mixture (30); subjecting the feed mixture (20) to solvolysis (200); fractionation (210); extraction (300) and optional upgrading of the obtained purified biocrude. The present disclosure further relates to the use of the obtained product(s).

The present disclosure relates to solvolysis of a substantially solid renewable feedstock (10) comprising forest industry residue(s). More in detail the disclosure relates to a process for converting substantially solid renewable feedstock (10) to renewable liquid product(s), wherein the process comprises feedstock conditioning (100); which comprises one or more of washing, mechanical dewatering (101), thermal drying (102) and pretreatment in the presence of solvent (103) to obtain a feed mixture (30); subjecting the feed mixture (30) to solvolysis (200); fractionation (210); extraction (300) and optional upgrading of the obtained purified biocrude. The present disclosure further relates to the use of the obtained product(s).

Described herein are systems and methods for the conversion of biomass, including lignin, into compounds useful as sustainable aviation fuel (SAF). Advantageously, the provided systems and methods remove the need for reductive catalytic fractionization and the use bioderived solvents rather than expensive exogenous solvents to increase energy efficiency and reduce processing costs. Instead, the described processes utilize flow through solvolysis and hydrodeoxygenation (HDO) as a single, flow-through process to convert biomass into useful fuels.

A process for producing 1,4-cyclohexanedimethanol by depolymerizing one or more recycled terephthalate-based polyesters or copolyesters via solvolysis with one or more glycols or alcohols and contacting the depolymerization product with an ester hydrogenolysis catalyst and hydrogen to produce a hydrogenolysis product and contacting the hydrogenolysis product with a hydrogenation catalyst and hydrogen to produce 1,4- cyclohexanedimethanol.

The present invention relates to the field of recovering carbonaceous materials of the carbon black type, in particular carbon blacks referred to as "recovered" carbon blacks (rCB) by means of a method for the solvolysis of used elastomers. It relates to a method for preparing recovered carbon black by means of a method for the solvolysis of used elastomers, which involves recycling a hydrocarbon cut comprising aromatic compounds, followed by a step of centrifuging the solvolysis effluent and carrying out conduction drying in order to obtain the recovered carbon black.

A method of recycling plastic waste by feeding a quantity of PET and PVC-containing reclaimer flake reject separated from the plastic waste to a chemical recycling facility; and depolymerizing in said chemical recycling facility at least a portion of said PET- and PVC-containing reclaimer flake reject which further comprises feeding at least a portion of the flake reject into at least one density separation stage before depolymerizing, in which a PET-enriched stream and a polyolefins-enriched stream are produced from a waste plastic stream comprising the flake reject; wherein the flake reject comprises at least 1 weight percent of PVC on a dry basis, and wherein the flake reject comprises at least 0.1 weight percent and / or not more than 20 weight percent polyolefins on a dry basis, wherein the flake reject is fed directly into a solvolysis facility within the chemical recycling facility and the solvolysis facility is a methanolysis facility.

According to the present invention, provided is a method for recycling a waste polyester raw material comprising 40 wt% or less of a heterogeneous component, the method comprising the steps of: depolymerizing a waste polyester raw material through solvolysis; and filtering a depolymerized product of the waste polyester raw material to separate at least a portion of the heterogeneous component from the depolymerized product, wherein the heterogeneous component comprises a compound which is not decomposed in the depolymerizing step.

The present disclosure relates to solvolysis of a substantially solid renewable feedstock (10) comprising residue(s) of oil-bearing crop(s). More in detail the disclosure relates to a process for converting substantially solid renewable feedstock (10) to renewable liquid product(s), wherein the process comprises feedstock conditioning (100), which comprises pretreatment (103) of the substantially solid renewable feedstock (10) in the presence of solvent (20) to obtain a feed mixture (30); subjecting the feed mixture (30) to solvolysis (200); fractionation (210); optional extraction (300) and optional upgrading of the obtained purified biocrude. The present disclosure further relates to the use of the obtained product(s).

The present invention relates to a method for separating a plastic solvolysis mixture comprising plastic degradation product, solvent and catalyst by means of membrane filtration. The resulting fractions can be recycled and reused, for example, for the solvolysis of plastics or as raw materials for the production of plastics.