US4696733A
Expired / Lapsed
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Process for selectively hydrogenating polycondensed aromatics
Assignee: Mobil Oil AS
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Filing: 1984-09-17
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Granted: 1987-09-29
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Expires: 2004-09-17
Abstract
Abstract A process is disclosed for hydrogenating or partially hydrogenating polynuclear aromatics by contacting them with manganese nodules in the presence of hydrogen at elevated temperatures. The resulting partially hydrogenated products are useful as hydrogen donors in processes such as thermal cracking.
Inventors
- 👤 Ying-Yen P. Tsao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:25
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
51 words
A process for preparing hydrogenated or partially hydrogenated polynuclear aromatic hydrogen donors from a hydrocarbon feed comprising polynuclear aromatic hydrogen acceptors, single ring aromatic hydrogen acceptors and double ring aromatic hydrogen acceptors, wherein said polynuclear aromatics are selectively hydrogenated by contacting said feed with hydrogen in the presence of maganese nodules.
Claim 2
Dependent Claim
51 words
A process for preparing hydrogenated or partially hydrogenated polynuclear aromatic hydrogen donors from a hydrocarbon feed comprising polynuclear aromatic hydrogen acceptors, single ring aromatic hydrogen acceptors and double ring aromatic hydrogen acceptors, wherein said polynuclear aromatics are selectively hydrogenated by contacting said feed with hydrogen in the presence of maganese nodules.
Claim 3
Dependent Claim
18 words
The process of claim 1 wherein said selective hydrogenation occurs in the presence of nitrogen- and sulfur-containing compounds.
Claim 4
Dependent Claim
47 words
The process of claim 1 wherein said selective hydrogenation occurs at temperatures ranging from about 250° to 500° C., pressures ranging from about 300 to 3000 psig, H 2 /feed volume ratios ranging from about 100 to 4000 and a space velocity of 0.1 to 20 LHSV.
Claim 5
Dependent Claim
47 words
The process of claim 3 wherein said selective hydrogenation occurs at temperatures ranging from about 300° to 400° C., pressures ranging from about 1000 to 1800 psig, H 2 /feed volume ratios ranging from about 400 to 2500 and a space velocity of 1 to 10 LHSV.
Claim 6
Dependent Claim
67 words
The process of claim 1 wherein said manganese nodules have surface areas ranging from about 40 to 350 m 2 /g, particle densities ranging from about 0.7 to 3.0 g/cc, pore diameters ranging from about 50 to 1000 A, pore volumes ranging from about 0.3 to 1.2 cc/g, real densities ranging from about 2.5 to 4.5 g/cc and particle sizes ranging from about 1 to 400 mesh.
Claim 7
Dependent Claim
67 words
The process of claim 5 wherein said manganese nodules have surface areas ranging from about 150 to 250 m 2 /g, particle densities ranging from about 1.1 to 1.6 g/cc, pore diameters ranging from about 60 to 200 A, pore volumes ranging from about 0.35 to 0.55 cc/g, real densities ranging from about 3.0 to 3.8 g/cc and particle sizes ranging from about 20 to 80 mesh.
Claim 8
Dependent Claim
54 words
A process for converting a hydrocarbon feed comprising polynuclear aromatic hydrogen acceptors, single ring aromatic hydrogen acceptors and double ring aromatic hydrogen acceptors, wherein hydrogen acceptors of increased reduction potential (Ep) are selectively hydrogenated relative to hydrogen acceptors of reduced reduction potential, said feed being contacted with hydrogen in the presence of manganese nodules.
Claim 9
Dependent Claim
54 words
A process for converting a hydrocarbon feed comprising polynuclear aromatic hydrogen acceptors, single ring aromatic hydrogen acceptors and double ring aromatic hydrogen acceptors, wherein hydrogen acceptors of increased reduction potential (Ep) are selectively hydrogenated relative to hydrogen acceptors of reduced reduction potential, said feed being contacted with hydrogen in the presence of manganese nodules.
Claim 10
Dependent Claim
18 words
The process of claim 7 wherein said selective hydrogenation occurs in the presence of nitrogen- and sulfur-containing compounds.
Claim 11
Dependent Claim
47 words
The process of claim 7 wherein said selective hydrogenation occurs at temperatures ranging from about 250° to 500° C., pressures ranging from about 300 to 3000 psig, H 2 /feed volume ratios ranging from about 100 to 4000 and a space velocity of 0.1 to 20 LHSV.
Claim 12
Dependent Claim
47 words
The process of claim 7 wherein said selective hydrogenation occurs at temperatures ranging from about 300° to 400° C., pressures ranging from about 1000 to 1800 psig, H 2 /feed volume ratios ranging from about 400 to 2500, and a space velocity of 1 to 10 LHSV.
Claim 13
Dependent Claim
67 words
The process of claim 7 wherein said manganese nodules have surface areas ranging from about 40 to 350 m 2 /g, particle densities ranging from about 0.7 to 3.0 g/cc, pore diameters ranging from about 50 to 1000 A, pore volumes ranging from about 0.3 to 1.2 cc/g, real densities ranging from about 2.5 to 4.5 g/cc and particle sizes ranging from about 1 to 400 mesh.
Claim 14
Dependent Claim
67 words
The process of claim 11 wherein said manganese nodules have surface areas ranging from about 150 to 250 m 2 /g, particle densities ranging from about 1.1 to 1.6 g/cc, pore diameters ranging from about 60 to 200 A, pore volumes ranging from about 0.35 to 0.55 cc/g, real densities ranging from about 3.0 to 3.8 g/cc and particle sizes ranging from about 20 to 80 mesh.
References Cited (Backward Citations)
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