(US20200283684) A method for obtaining a stable lignin: polar organic solvent composition via mild solvolytic modifications 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(US20200283684) A method for obtaining a stable lignin: polar organic solvent composition via mild solvolytic modifications
公开号/公开日
US20200283684 / 2020-09-10
申请号/申请日
US16/648,079 / 2018-09-18
发明人
KOURIS PanagiotisBOOT Michael DirkHENSEN Emiel Jan MariaOEVERING Hendrik;
申请人
TECHNISCHE UNIVERSITEIT EINDHOVEN;
主分类号
IPC分类号
C07G-001/00 C10G-001/04 C10G-001/08
摘要
(US20200283684) A process the production of a crude liquid lignin oil (CLO), the process includes the steps of providing a lignin-rich solid feedstock and subjecting the lignin-rich solid feedstock to a treatment in a polar organic solvent in the absence of an effective amount of added reaction promoter, such as a heterogeneous and/or homogeneous catalyst and/or hydrogen, and providing a lignin composition, the treatment includes a step of contacting the lignin-rich solid feedstock with a polar organic solvent under operating conditions of an operating temperature up to 210° C., an operating pressure lower than 50 bar and a residence time up to 240 minutes, wherein the ratio (w/v) of lignin (in lignin-rich feedstock) to polar organic solvent ranges between 1:1.5 and 1:15, or between 1:2 and 1:10 or between 1:2 and 1:5.
机翻摘要
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地址
代理人
代理机构
;
优先权号
2017NL-2019567 2018EP-0166120
主权利要求
(US20200283684) What is claimed is: 1. A process for the production of a crude liquid lignin oil (CLO), said process comprises the steps of:   providing a lignin-rich solid feedstock and subjecting the lignin-rich solid feedstock to a treatment in a polar organic solvent in the absence of an effective amount of added reaction promoter, such as a heterogeneous and/or homogeneous catalyst and/or hydrogen, and providing a lignin composition,   said treatment comprises a step of contacting said lignin-rich solid feedstock with a polar organic solvent under operating conditions of an operating temperature up to 200° C., an operating pressure lower than 50 bar and a residence time up to 240 minutes,   wherein the ratio (w/v) of lignin (in lignin-rich feedstock) to polar organic solvent ranges between 1:2 and 1:15 g/ml. 2. The process according to claim 1, wherein the operating temperature ranges between 100-200° C., preferably between 140-200° C., more preferably in a range of 160-199° C., and wherein the ratio (w/v) of lignin (in lignin-rich feedstock) to polar organic solvent ranges between 1:2 and 1:10 q/ml or between 1:2 and 1:5 g/ml. 3. The process according to claim 1, wherein the operating pressure ranges between 2-50 bar, preferably in a range of 5-40 bar, and wherein the residence time ranges between 10-120 minutes preferably in a range of 20-90 minutes, more preferably between 21 and 40 minutes. 4. The process according to claim 1, wherein the polar organic solvent is a polar organic solvent having at least one oxygen group chosen from the group of alcohols, ketones and esters, and combinations thereof and wherein the melting temperature of the solvent is below 50° C., preferably below 40° C. 5. The process according to claim 1, wherein the polar organic solvent is methanol, ethanol, n-propanol, i-propanol, t-butanol, i-butanol, phenol, diols, like for example ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1.3-propanediol, butanediol, hexanediol, glycerol, methyl acetate, ethyl acetate, acetone or methyl ethyl ketone, or a combination thereof. 6. The process according to claim 1, wherein the polar organic solvent is ethanol, methanol, n-propanol, i-propanol, t-butanol, i-butanol, methyl acetate, ethyl acetate, acetone or methyl ethyl ketone, or a combination thereof. 7. The process according to claim 1, wherein the amount of water present is preferably less than 15 wt. %, more preferably less than 10 wt. % of the sum of the lignin-rich solid feedstock and polar organic solvent. 8. The process according to claim 1, wherein the process contains a second stage, wherein the suspended lignin stream obtained from the previous step is subjected to a partial removal of the polar organic solvent from the mixture and optionally the solvent is replaced by another polar solvent having an oxygen atom. 9. A medium crude lignin composition (CLO-M) comprising 8-30 wt. % of lignin, preferably between 10 and 30 wt. % lignin and a polar organic solvent. 10. The composition according to claim 9, wherein the lignin has a weight average molecular weight (Mw) in a range of 1000-2000 dalton with a polydispersity index in a range of 2.1-3, and wherein the lignin composition preferably has a kinematic viscosity at a shear rate of 300 (1/s) @40° C. between 1.5 and 20, preferably between 1.8 and 10 (cST). 11. The composition according to claim 9, wherein the polar organic solvent is selected from ethanol and methanol. 12. A high crude lignin composition (CLO-H) comprising 30-80 wt. % of lignin, preferably between 50 and 75 wt. % lignin and a polar organic solvent. 13. The composition according to claim 12, wherein the lignin has a weight average molecular weight (Mw) in a range of 1000-2000 dalton with a polydispersity index in a range of 2.1-3, and wherein the lignin composition preferably has a kinematic viscosity at a shear rate of 300 (1/s) @ 40° C. between 20 and 200 cST, preferably between 50 and 150 or between 60 and 140 (cST). 14. The composition according to claim 12, wherein the polar organic solvent is selected from the group consisting of ethanol and methanol. 15. A method, comprising the steps of: using the crude liquid lignin obtained in the process according to claim 1, as a fuel or as a chemical component for downstream applications. 16. A crude lignin oil (CLO), comprising: a reaction lignin product obtained by solvolysis of a solid feedstock containing lignin in a polar organic solvent, wherein the organic solvent is an alcohol, a ketone or an ester, and combinations thereof, wherein the ratio between the reaction lignin product and said polar organic solvent is in a range 1:1-1:2 g/ml. 17. The CLO according to claim 16, wherein the average molecular weight distribution is in a range of 500-5000 daltons with a polydispersity index in a range of 1.5-10.0.
法律状态
PENDING
专利类型码
A1
国别省市代码
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