Method for converting waste plastic to lower-molecular weight hydrocarbons, particularly hydrocarbon fuel materials, and the hydrocarbon material produced thereby
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-001/02
C10G-001/10
C10L-001/04
출원번호
US-0559169
(2014-12-03)
등록번호
US-9404046
(2016-08-02)
발명자
/ 주소
Sarker, Moinuddin
출원인 / 주소
NATURAL STATE RESEARCH, INC.
대리인 / 주소
Wilson Sonsini Goodrich & Rosati
인용정보
피인용 횟수 :
0인용 특허 :
41
초록▼
The method produces a hydrocarbonaceous fluid (a liquid mixture of hydrocarbons, or in other words a mixture of hydrocarbons which is liquid at ambient room temperature and atmospheric pressure), which functionally is a liquid hydrocarbon fuel, from a feed of waste plastic. The method can comprise t
The method produces a hydrocarbonaceous fluid (a liquid mixture of hydrocarbons, or in other words a mixture of hydrocarbons which is liquid at ambient room temperature and atmospheric pressure), which functionally is a liquid hydrocarbon fuel, from a feed of waste plastic. The method can comprise the steps of: (step 1) melting a feed of substantially solid waste plastic in an aerobic atmosphere (for instance, air) whereby a waste-plastic melt is produced; (step 2) distilling at least a portion of the waste-plastic melt whereby a hydrocarbonaceous distillate is produced; and (step 3) collecting the hydrocarbonaceous distillate. That distillate is generally referred to above as a condensate. The method can include the step of comminuting the feed of substantially solid waste plastic into pieces substantially no greater than about 1.5 cm2 prior to step 1. The method can also include the step of adding an effective amount of a cracking catalyst to the waste plastic prior to step 2.
대표청구항▼
1. A method for the production of a hydrocarbonaceous fluid from a feed of waste plastic comprising: (a) melting a feed of substantially solid waste plastic in an aerobic atmosphere whereby a waste-plastic melt is produced;(b) in said aerobic atmosphere, thermally decomposing plastic in said waste-p
1. A method for the production of a hydrocarbonaceous fluid from a feed of waste plastic comprising: (a) melting a feed of substantially solid waste plastic in an aerobic atmosphere whereby a waste-plastic melt is produced;(b) in said aerobic atmosphere, thermally decomposing plastic in said waste-plastic melt;(c) distilling at least a portion of said waste-plastic melt whereby a hydrocarbonaceous distillate is produced; and(d) collecting said hydrocarbonaceous distillate,wherein a mass of said hydrocarbonaceous distillate is at least about 85% of the solid waste plastic. 2. The method according to claim 1, further including: prior to (a), comminuting said feed of substantially solid waste plastic into pieces substantially no greater than about 1.5 cm2. 3. The method according to claim 1, further comprising, prior to (c), adding an effective amount of a cracking catalyst to said waste-plastic melt. 4. The method according to claim 1, wherein (a), (b) and (c) are performed by: (i) heating said feed of substantially solid waste plastic in an aerobic atmosphere in a vessel to melt and volatilize at least a portion of said feed of substantially solid waste plastic to produce a stream of volatiles; and(ii) condensing said stream of volatiles. 5. The method according to claim 1 wherein, in (a), said feed of substantially-solid waste plastic is substantially a feed of linear, thermoplastic polymer. 6. The method according to claim 1 wherein, in (a), said feed of substantially-solid waste plastic is substantially a feed of waste plastic selected from the group consisting of high-density polyethylene, low-density polyethylene, polypropylene and mixtures thereof. 7. The method according to claim 1 further including: (e) filtering said distillate. 8. The method according to claim 1 further including: (e) filtering said distillate to produce a filtrate; and(f) distilling said filtrate to produce a refined filtrate. 9. The method according to claim 1 further including: (e) filtering said distillate to produce a filtrate;(f) distilling said filtrate to produce a refined filtrate; and(g) separately collecting a first fraction of said refined filtrate. 10. The method according to claim 1 further including: prior to (c), adding an effective amount of a cracking catalyst to said waste plastic;(e) filtering said distillate to produce a filtrate;(f) distilling said filtrate to produce a refined filtrate; and(g) separately collecting a first fraction of said refined filtrate. 11. A hydrocarbonaceous fluid produced according to the method of claim 1 and containing hydrocarbons within the liquid hydrocarbon fuel range. 12. A hydrocarbonaceous fluid produced according to the method of claim 9 and containing hydrocarbons within the liquid hydrocarbon fuel range. 13. A method for the production of a hydrocarbonaceous fluid from a feed of waste plastic comprising: (a) melting a feed of substantially solid waste plastic in an aerobic atmosphere whereby a waste-plastic melt is produced, wherein said feed of substantially solid waste plastic is melted without adding a catalyst to said feed;(b) in said aerobic atmosphere, thermally decomposing plastic in said waste-plastic melt;(c) distilling at least a portion of said waste-plastic melt whereby a hydrocarbonaceous distillate is produced; and(d) collecting said hydrocarbonaceous distillate. 14. The method according to claim 13, further including: prior to (a), comminuting said feed of substantially solid waste plastic into pieces substantially no greater than about 1.5 cm2. 15. The method according to claim 13, wherein (a), (b) and (c) are performed by: (i) heating said feed of substantially solid waste plastic in an aerobic atmosphere in a vessel to melt and volatilize at least a portion of said feed of substantially solid waste plastic to produce a stream of volatiles; and(ii) condensing said stream of volatiles. 16. The method according to claim 13 wherein, in (a), said feed of substantially-solid waste plastic is substantially a feed of linear, thermoplastic polymer. 17. The method according to claim 13 wherein, in (a), said feed of substantially-solid waste plastic is substantially a feed of waste plastic selected from the group consisting of high-density polyethylene, low-density polyethylene, polypropylene and mixtures thereof. 18. The method according to claim 13 further including: (e) filtering said distillate. 19. The method according to claim 13 further including: (e) filtering said distillate to produce a filtrate; and(f) distilling said filtrate to produce a refined filtrate. 20. The method according to claim 13 further including: (e) filtering said distillate to produce a filtrate;(f) distilling said filtrate to produce a refined filtrate; and(g) separately collecting a first fraction of said refined filtrate. 21. A hydrocarbonaceous fluid produced according to the method of claim 13 and containing hydrocarbons within the liquid hydrocarbon fuel range. 22. A hydrocarbonaceous fluid produced according to the method of claim 20 and containing hydrocarbons within the liquid hydrocarbon fuel range.
Sarker, Moinuddin, Method for converting waste plastic to lower-molecular weight hydrocarbons, particularly hydrocarbon fuel materials, and the hydrocarbon material produced thereby.
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