US 11,814,589 B2 · Solvent composition prepared from waste oil and method of preparing the same

Abstract

Provided is a technology to convert an oil having a high content of Cl into a solvent. Impurities such as Cl, S, N, and metals are removed from an oil having a boiling point of 340° C. or lower in a waste oil having a high content of Cl, and hydrogenation is carried out to recover an oil, and the oil may be applied as a solvent. Separation by boiling points to meet the properties of the solvent product is performed, a solid acid material and an oil having a high Cl content are mixed, impurities are removed by a heat treatment at a high temperature, and hydrogenation is carried out with a metal oxide catalyst, thereby manufacturing a solvent product.

Claims9

Dependent claims

A method of preparing a solvent composition from a waste oil, the method comprising the steps of:

(a) separating at least a part of a waste oil into a first oil and a second oil, wherein the first oil has a boiling point of lower than 340° C. and the second oil has a boiling point of 340° C. or higher;
(b) reacting at least a part of the first oil to remove chlorine;
and
(c) hydrogenating the dechlorinated first oil,
wherein in (c), the dechlorinated first oil includes less than 10 ppm of chlorine and 0.1 to 40 wt % of an olefin, with respect to the total weight.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/724,889Filed 20 Apr 2022

Priority

KR 10-2021-005187821 Apr 2021

Published

US 2022/0340824 A127 Oct 2022

Granted

14 Nov 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

C10G 1/002
Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal: in…
C10G 45/04
To eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons;…:…
C10G 45/34
Selective hydrogenation of the diolefin or acetylene compounds: characterised by the catalyst used
C10G 67/06
Plural serial stages only: including a sorption process as the refining step in the absence of hydrogen

Solvent composition prepared from waste oil and method of preparing the same

Life of this patent

Solvent composition prepared from waste oil and method of preparing the same

Life of this patent

Abstract

Claims9