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US 11,124,470 B2Granted
Systems and methods of producing methyl tertiary butyl ether and propylene
AssigneeSabic Global Technologies B.V.
InventorsGuillermo Leal, Mohammed Bismillah Ansari, Vijay Dinkar Bodas
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Abstract
A method of producing methyl tertiary butyl ether (MTBE) and propylene is disclosed. The method involves the use of a crude C4 stream and the integration of a MTBE synthesis process and a cracking process. The method may include processing a byproduct stream from an MTBE synthesis unit to produce high purity olefin streams for an olefins conversion technology unit.
Claims20
A method of producing methyl tertiary butyl ether (MTBE) and propylene, the method comprising:
- flowing a crude C4 stream comprising butadiene, isobutylene, 2-butene, 1-butene, acetylene, isobutane, and n-butane to a selective hydrogenation unit;
- hydrogenating the butadiene in the selective hydrogenation unit to form additional 1-butene and additional 2-butene, wherein the additional 1-butene and the additional 2-butene and unreacted material of the crude C4 stream is included in effluent of the selective hydrogenation unit;
- flowing the effluent of the selective hydrogenation unit to a MTBE synthesis unit;
- reacting, in the MTBE synthesis unit, the isobutylene from the crude C4 stream with methanol (MeOH) to produce the MTBE,
- flowing, from the MTBE synthesis unit, a byproduct stream comprising 1-butene, isobutane, 2-butene, and n-butane to a processing unit;
- processing, in the processing unit, the byproduct stream to produce a first stream comprising primarily 1-butene and a second stream comprising primarily 2-butene;
- flowing the second stream comprising primarily 2-butene to an olefins conversion technology unit;
- and
- reacting the 2-butene with ethylene to produce propylene.
6 more elements
A method of producing methyl tertiary butyl ether (MTBE) and propylene, the method consisting of the steps of:
- flowing a crude C4 stream comprising butadiene, isobutylene, 2-butene, 1-butene, acetylene, isobutane, and n-butane to a selective hydrogenation unit;
- hydrogenating the butadiene in the selective hydrogenation unit to form additional 1-butene and additional 2-butene, wherein the additional 1-butene and the additional 2-butene and unreacted material of the crude C4 stream is included in effluent of the selective hydrogenation unit;
- flowing the effluent of the selective hydrogenation unit to a MTBE synthesis unit;
- reacting, in the MTBE synthesis unit, the isobutylene from the crude C4 stream with methanol (MeOH) to produce the MTBE,
- flowing, from the MTBE synthesis unit, a byproduct stream comprising 1-butene, isobutane, 2-butene, and n-butane to a processing unit;
- processing, in the processing unit, the byproduct stream to produce a first stream comprising primarily 1-butene and a second stream comprising primarily 2-butene;
- flowing the second stream comprising primarily 2-butene to an olefins conversion technology unit;
- and
- reacting the 2-butene with ethylene to produce propylene.
6 more elements
Dependencies are inferred from the claim text.