IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0994461
(2011-12-20)
|
등록번호 |
US-9676681
(2017-06-13)
|
우선권정보 |
EP-11161406 (2011-04-07) |
국제출원번호 |
PCT/US2011/066206
(2011-12-20)
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§371/§102 date |
20130920
(20130920)
|
국제공개번호 |
WO2012/099678
(2012-07-26)
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발명자
/ 주소 |
- Keusenkothen, Paul F.
- Hershkowitz, Frank
- Davis, Jason D.
- Mohr, Gary D.
|
출원인 / 주소 |
- ExxonMobil Chemical Patents Inc.
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
21 |
초록
▼
An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene and propylene. In particular, the present techniques combine a first hydrocarbon feed with a second hydrocarbon feed and a hydroge
An apparatus and method are provided for processing hydrocarbon feeds. The method enhances the conversion of hydrocarbon feeds into conversion products, such as ethylene and propylene. In particular, the present techniques combine a first hydrocarbon feed with a second hydrocarbon feed and a hydrogen (H2) containing stream to manage the hydrogen content of the feed provided to a pyrolysis reactor. The mixture is then exposed to high-severity operating conditions in a pyrolysis reactor and further processing into desired olefins.
대표청구항
▼
1. A hydrocarbon conversion method comprising: a) providing a weight based rate (WT1) of a first hydrocarbon feed having a carbon parameter (CHC1) and a hydrogen parameter (HHC1), where the hydrogen parameter (HHC1) is <14.0 wt % of the first hydrocarbon feed;b) providing a weight based rate (WT2) o
1. A hydrocarbon conversion method comprising: a) providing a weight based rate (WT1) of a first hydrocarbon feed having a carbon parameter (CHC1) and a hydrogen parameter (HHC1), where the hydrogen parameter (HHC1) is <14.0 wt % of the first hydrocarbon feed;b) providing a weight based rate (WT2) of a second hydrocarbon feed having a carbon parameter (CHC2) and a hydrogen parameter (HHC2), where the hydrogen parameter (HHC2) is ≧14.0 wt % of the second hydrocarbon feed;c) providing a weight based rate (WTD) of a hydrogen containing stream having a hydrogen gas content (HH2D) and a hydrocarbon content (HCD), wherein the hydrocarbon content (HCD) has a hydrocarbon hydrogen parameter (HHCD) and a hydrocarbon carbon parameter (CHCD) as a weight percent of total hydrogen containing stream;d) combining the first hydrocarbon feed and the second hydrocarbon feed and the hydrogen containing stream to form a pyrolysis feed having (i) a hydrogen parameter (HHCT) in the range of 12.0 wt % to 18.0 wt % based on the weight of the pyrolysis feed and (ii) a total atomic hydrogen to carbon ratio (HCRT) in the range of 3.0 to 15.0; ande) exposing the pyrolysis feed in a reverse-flow thermal pyrolysis reactor to high-severity pyrolysis conditions which include a peak pyrolysis gas temperature≧1540° C., a pressure≧44 psig, and a residence time in the range of 5 to 53 milliseconds, to yield an intermediate which includes hydrocarbon radicals and to produce a reactor product comprising ethylene and acetylene, wherein the reactor product has a C3+ to acetylene weight ratio in the range of from 0.261 to 0.45. 2. The method of claim 1, comprising determining the weight based rate (WT2) and the weight based rate (WTD) by algebraically solving the two equations: HHC1*WT1+HHC2*WT2+HHCD*WTD=HHCT*(WT1+WT2+WTD*HCD) i)(12*(HHC1*WT1+HHC2*WT2+(HH2D+HHCD)*WTD))/(CHC1*WT1+CHC2*WT2+CHCD*WTD)=HCRT. ii) 3. The method of claim 1, wherein the weight based rate (WT2) is in the range of 0.0% to 95.0% of the combined the weight based rate (WT1) and the weight based rate (WT2). 4. The method of claim 1, further comprising measuring the carbon parameter (CHC1) and the hydrogen parameter (HHC1). 5. The method of claim 1, wherein the first hydrocarbon feed is derived from a base hydrocarbon feed containing non-volatiles by stripping the first hydrocarbon feed from the base hydrocarbon feed containing non-volatiles during or before step d), the stripping being carried out using a stripping medium which includes at least one of the second hydrocarbon feed or the hydrogen containing stream. 6. The method of claim 1, wherein the first hydrocarbon feed is combined with the second hydrocarbon feed to form a reactor feed and wherein the hydrogen is added to the reactor feed to form the pyrolysis feed. 7. A hydrocarbon conversion method comprising: a) providing a first hydrocarbon feed having a hydrogen content≦20.0 wt % of the first hydrocarbon feed;b) mixing a second hydrocarbon feed having a hydrocarbon content≧20.0 wt % of the second hydrocarbon feed with the first hydrocarbon feed to form a reactor feed, wherein the first hydrocarbon feed comprises ≧5.0 wt % based on the weight of the reactor feed and the second hydrocarbon feed comprises ≦5.0 wt % based on the weight of the reactor feed;c) mixing a hydrogen containing stream with the reactor feed to form a pyrolysis feed having an atomic hydrogen to carbon (H/C) weight ratio, based on the weight of the hydrogen and hydrocarbon in the pyrolysis feed, the (H/C) weight ratio being in the range of 5 to 15; andd) exposing the pyrolysis feed to high-severity pyrolysis conditions which include a peak pyrolysis gas temperature≧1540° C., a pressure≧44 psig, and a residence time in the range of 5 to 53 milliseconds in a reverse-flow thermal pyrolysis reactor, to yield an intermediate which includes hydrocarbon radicals and to produce a reactor product comprising hydrogen, ethylene and acetylene, wherein the reactor product has a C3+ to acetylene weight ratio in the range of from 0.261 to 0.45. 8. The method of claim 7, further comprising: i) obtaining a weight based rate (WT1) of the first hydrocarbon feed, wherein the first hydrocarbon feed has a carbon parameter (CHC1) and a hydrogen parameter (HHC1);ii) obtaining a carbon parameter (CHC2) and a hydrogen parameter (HHC2) of the second hydrocarbon feed;iii) obtaining a hydrogen gas content (HH2D) and a hydrocarbon content (HCD) of the hydrogen containing stream, wherein the hydrocarbon content (HCD) has a hydrocarbon hydrogen parameter (HHCD) and a carbon parameter (CHCD) as a weight percent of the total hydrogen containing stream;iv) calculating a weight based rate (WT2) of the second hydrocarbon feed and a weight based rate (WTD) of the hydrogen containing stream to achieve a predetermined hydrocarbon hydrogen target level (HHCT) and a total atomic hydrogen to carbon target ratio level (HCRT) for the pyrolysis feed;v) adjusting the amount of the second hydrocarbon feed mixed with the first hydrocarbon feed in b) based on the calculated weight based rate (WT2); andvi) adjusting the amount of the hydrogen containing stream mixed with the reactor feed in c) based on the calculated weight based rate (WTD). 9. The method of claim 8, wherein the total atomic hydrogen to carbon target ratio level (HCRT) is in the range of 6 to 9. 10. The method of claim 8, comprising determining the weight based rate (WT2) and the weight based rate (WTD) by algebraically solving the two equations: HHC1*WT1+HHC2*WT2+HHCD*WTD=HHCT*(WT1+WT2+WTD*HCD) i)(12*(HHC1*WT1+HHC2*WT2+(HH2D+HHCD)*WTD))/(CHC1*WT1+CHC2*WT2+CHCD*WTD)=HCRT. ii) 11. The method of claim 10, further comprising adjusting a flow rate of at least one of the second hydrocarbon feed or the hydrogen containing stream based on one of the determined weight based rate (WT2), the weight based rate (WTD), and any combination thereof. 12. The method of claim 10, further comprising transmitting a signal from a process control unit to a flow control unit to adjust the flow rate of at least one of the second hydrocarbon feed or the hydrogen containing stream, wherein the process control unit determines the weight based rate (WT2) and the weight based rate (WTD). 13. The method of claim 8, comprising converting at least a portion of the reactor product into ethylene. 14. The method of claim 13, further comprising separating hydrogen from at least a portion of the reactor product downstream and/or upstream of the ethylene converting. 15. The method of claim 14, wherein the hydrogen separated downstream and/or upstream of the ethylene converting is separated via hydrogen membrane, pressure swing adsorption, electrochemical separation, cryogenic separation, solvent absorption, or combinations thereof. 16. The method of claim 14, wherein the hydrogen containing stream comprises at least a portion of the hydrogen separated downstream and/or upstream of the ethylene converting. 17. The method of claim 7, wherein the peak pyrolysis gas temperature is in the range of 1540.0° C. to 2200.0° C. 18. The method of claim 7, wherein the high-severity pyrolysis conditions further include a pressure in the range of from 59 psig to 162 psig. 19. The method of claim 7, wherein the reverse flow thermal pyrolysis reactor is a regenerative reverse flow reactor and further comprising: exothermically reacting a first combustion feed with a second combustion feed to heat a region at least partially within the reverse flow thermal pyrolysis reactor;removing combustion products from the reverse flow thermal pyrolysis reactor; andheating the pyrolysis feed using at least a portion of the heat generated by the exothermic reaction. 20. The method of claim 7, further comprising separating from a third hydrocarbon feed the first hydrocarbon feed and the second hydrocarbon feed.
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