US2017073585A1PendingUtilityA1
Method for producing bio-heavy oil from sewage sludge and bio-heavy oil produced by the method
Assignee: UNIV SUNGKYUNKWAN RES & BUSPriority: Sep 10, 2015Filed: Sep 12, 2016Published: Mar 16, 2017
Est. expirySep 10, 2035(~9.1 yrs left)· nominal 20-yr term from priority
C10L 1/04C10G 2300/1003C10L 2290/544C10G 1/042C10L 2200/0469C10G 2300/202C10G 1/00Y02P30/20
44
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Claims
Abstract
The present disclosure relates to a method for producing a sewage sludge-derived bio-heavy oil and the bio-heavy oil produced by the method, the method including breaking organic materials included in the sewage sludge into small molecules and removing oxygen at the same time using a supercritical state alcohol as a solvent and reaction medium, thereby effectively providing a bio-heavy oil with low oxygen content and high energy content.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A method for producing bio-heavy oil from sewage sludge, the method comprising a step of producing the bio-heavy oil by reacting the sewage sludge with an alcohol solvent at a supercritical state.
2 . The method according to claim 1 ,
further comprising a step of drying the sewage sludge, before the step of producing the bio-heavy oil.
3 . The method according to claim 1 ,
further comprising a step of separating and collecting a reaction product generated, after the step of producing the bio-heavy oil.
4 . The method according to claim 1 ,
wherein the sewage sludge comprises at least one of raw sludge, excess sludge, enriched sludge, digested sludge and dehydrated sludge.
5 . The method according to claim 4 ,
wherein a moisture content of the sewage sludge is 5 to 90 weight %.
6 . The method according to claim 1 ,
wherein the alcohol solvent comprises at least one of methanol, ethanol, propanol, isopropylalcohol, butanol, isobutanol, 2-butanol, tert-butanol, n-pentanol, isopentyl alcohol, 2-methyl-1-butanol, neopentyl alcohol, diethyl carbinol, methyl propyl carbinol, methyl isopropyl carbinol, dimethyl ethyl carbinol, 1-hexanol, 2-hexanol, 3-hexanol, 2-methyl-1-pentanol, 3-methyl-1-pentanol, 4-methyl-1-pentanol, 2-methyl-2-pentanol, 3-methyl-2-pentanol, 4-methyl-2-pentanol, 2-methyl-3-pentanol, 3-methyl-3-pentanol, 2,2-dimethyl-1-butanol, 2,3-dimethyl-1-butanol, 2,3-dimethyl-2-butanol, 3,3-d imethyl-1-buta nol, 2-ehtyl-1-butanol, 1-heptanol, 2-heptanol, 3-heptanol and 4-heptanol.
7 . The method according to claim 1 ,
wherein the sewage sludge is 1 to 80 weight % of a total 100 weight % of the sewage sludge and the alcohol solvent.
8 . The method according to claim 1 ,
wherein the sewage sludge and the alcohol solvent are reacted at a temperature of 250 to 600° C.
9 . The method according to claim 1 ,
wherein the sewage sludge and the alcohol solvent are reacted under a pressure of 30 to 700 bar.
10 . The method according to claim 1 ,
wherein the sewage sludge is reacted at the supercritical state of the alcohol solvent for 10 seconds to 5 hours.
11 . The method according to claim 1 ,
wherein the alcohol solvent comprises a mixed solvent where the alcohol is mixed with water at a weight ratio of 7:3 to 3:7.
12 . The method according to claim 1 ,
wherein the step of producing the bio-heavy oil comprises adding an additive and reacting the additive with the sewage sludge.
13 . The method according to claim 12 ,
wherein the additive comprises at least one selected from a group consisting of LiOH, NaOH, KOH, RbOH, Li 2 CO 3 , Na 2 CO 3 , K 2 CO 3 , Mg(OH) 2 , Ca(OH) 2 , Sr(OH) 2 , MgCO 3 , CaCO 3 , SrCO 3 , hydrochloric acid (HCl), nitric acid (HNO 3 ), phosphoric acid (H 3 PO 4 ), sulfuric acid (H 2 SO 4 ), boric acid (H 3 BO 3 ), hydrofluoric acid (HF), carbonic acid (H 2 CO 3 ), formic acid (HCOOH), acetic acid (CH 3 COOH), propionic acid (CH 3 CH 2 COOH), butylic acid (CH 3 CH 2 CH 2 COOH), lactic acid (C 2 H 4 OHCOOH), and benzoic acid (C 6 H 5 COOH).
14 . A bio-heavy oil produced by the producing method of claim 1 .
15 . The bio-heavy oil according to claim 14 ,
wherein the bio-heavy oil has an oxygen content of 5 to 20 weight %, and an O/C(oxygen/carbon) mole ratio of 0.05 to 0.25.
16 . The bio-heavy oil according to claim 14 ,
wherein a higher heating value (HHV) of the bio-heavy oil may be 25 to 45 MJ/kg according to Math Equation 3:
Higher
Heating
Value
{
HHV
,
MJ
/
Kg
}
=
34
C
+
124.3
H
+
6.3
N
+
19.3
S
-
9.8
O
100
.
[
Math
Equation
3
]
in Math Equation 3 above, C, H, N, S, and O being a weight ratio of carbon, hydrogen, nitrogen, sulfur and oxygen, respectively, of total elements existing in the bio-heavy oil.
17 . A fuel for use of power generation or for transportation, the fuel comprising the bio-heavy oil according to claim 14 .Join the waitlist — get patent alerts
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