US3035989A - Preparation of high purity coke and graphite - Google Patents
Preparation of high purity coke and graphite Download PDFInfo
- Publication number
- US3035989A US3035989A US47928A US4792860A US3035989A US 3035989 A US3035989 A US 3035989A US 47928 A US47928 A US 47928A US 4792860 A US4792860 A US 4792860A US 3035989 A US3035989 A US 3035989A
- Authority
- US
- United States
- Prior art keywords
- coke
- temperature
- graphite
- acenaphthylene
- high purity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000000571 coke Substances 0.000 title claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title description 14
- 239000010439 graphite Substances 0.000 title description 14
- 229910002804 graphite Inorganic materials 0.000 title description 14
- 238000002360 preparation method Methods 0.000 title description 2
- HXGDTGSAIMULJN-UHFFFAOYSA-N acenaphthylene Chemical compound C1=CC(C=C2)=C3C2=CC=CC3=C1 HXGDTGSAIMULJN-UHFFFAOYSA-N 0.000 claims description 18
- 238000004939 coking Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- CUIWZLHUNCCYBL-UHFFFAOYSA-N decacyclene Chemical compound C12=C([C]34)C=CC=C4C=CC=C3C2=C2C(=C34)C=C[CH]C4=CC=CC3=C2C2=C1C1=CC=CC3=CC=CC2=C31 CUIWZLHUNCCYBL-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- IFLREYGFSNHWGE-UHFFFAOYSA-N tetracene Chemical compound C1=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C21 IFLREYGFSNHWGE-UHFFFAOYSA-N 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 4
- 125000004054 acenaphthylenyl group Chemical group C1(=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 15
- 229920005547 polycyclic aromatic hydrocarbon Polymers 0.000 description 6
- 239000003208 petroleum Substances 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthene Chemical compound C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CWRYPZZKDGJXCA-UHFFFAOYSA-N acenaphthene Chemical compound C1=CC(CC2)=C3C2=CC=CC3=C1 CWRYPZZKDGJXCA-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- WDECIBYCCFPHNR-UHFFFAOYSA-N chrysene Chemical compound C1=CC=CC2=CC=C3C4=CC=CC=C4C=CC3=C21 WDECIBYCCFPHNR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- JTRPLRMCBJSBJV-UHFFFAOYSA-N benzonaphthacene Natural products C1=CC=C2C3=CC4=CC5=CC=CC=C5C=C4C=C3C=CC2=C1 JTRPLRMCBJSBJV-UHFFFAOYSA-N 0.000 description 1
- 239000011329 calcined coke Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LHEOFIBQZSRTNC-UHFFFAOYSA-N phenanthrene-3-carbaldehyde Chemical compound C1=CC=C2C3=CC(C=O)=CC=C3C=CC2=C1 LHEOFIBQZSRTNC-UHFFFAOYSA-N 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/12—Moderator or core structure; Selection of materials for use as moderator characterised by composition, e.g. the moderator containing additional substances which ensure improved heat resistance of the moderator
- G21C5/126—Carbonic moderators
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Definitions
- the main object of the present invention is to provide an eflicient process for making high purity graphite from certain polynuclear aromatic hydrocarbons, which process does not require catalysis or high pressure conditions.
- decacyclene and naphthacene yield appreciable quantities of coke at atmospheric pressure.
- deeacyclene is related to acenaphthylene, since three molecules of the latter can be joined to form one of the former.
- the compound to be coked is placed in a suitable refractory vessel, which is inserted in a metallic double sagger, and placed in a coking oven.
- the vessel is provided with a protective atmosphere of nitrogen, helium or argon.
- heating is effected as follows. The temperature is first increased at a rate of about 60 C. per hour to 390 C., held at 390 C. for about hours, increased to 450 C., and held there for 5 to 6 hours, and cooled.
- the material is placed in a metal or ceramic beaker, enclosed in the double sagger, and heated under ambient pressure at a rate of increasing temperature of about 60 C. per hour to 1000 C., and held at this temperature for about one hour or until all the volatile materials had ice 2 been driven off.
- Graphitization of the coke can be eifected by any known manner.
- heating periods and temperatures employed in preparing the coke may be made within the scope of the invention.
- the rate of heating may be varied between 10 and C. per hour with a preferred rate being about 60 C.
- the first hold temperature may be varied between 350 and 400 C., and the hold period in this temperature range may vary from one to fifteen hours.
- the final hold temperature may vary between 450 to 500 C., and the hold period between one and ten hours.
- 'Calcination of the raw coke may be done at 800 to 1000 C. employing the same 10 to 100 C. per hour heating rate up to that temperature.
- Table I compares the coking values at 450 C. of various polynuclear aromatic hydrocarbons and acenaphthylene. The superiority of acenaphthylene in this respect is clearly demonstrated. Many polynuclear aromatic compounds have been investigated, but none have been observed to give such high yields of high quality coke at atmospheric pressure as acenaphthylene. In addition to giving a good yield of coke, acenaphthylene also gives an excellent grade of graphite when graphitized by conventional methods.
- Tab-1e II compares the excellent properties of graphite rods prepared from acenaphthylene and from other sources including pressure-coked anthracene, pressure coked Phenanthrene, and commercially available petroleum fractions.
- the rods were prepared by taking 1000 C. calcined coke (prepared as previously de' scribed) from these sources, grinding, sizing, and mixing the coke with coal tar pitch and extruding this mix into rods.
- the rods were baked to 1000 C. on a 60 C. per hour schedule, and subsequently graphitized to 3000 C. in a graphite tube furnace.
- CT E Coefficients of thermal expansion
- Aprocess. to: makingv high purity graphitizable coke comprising placing ina heating vessel a'starting material 7 selected. from. the. group consisting of ac'enapht-hylene, 75 tween about 450 C., and 500, C., maintaining said tom'- p 7 TABLE II Properties of Graphite Rods From Acenaphthylene Coke 1 and Other Sources 1,000 C, GTE, Coke Source Type of Coke A.D., Resistance. 1n./tn./? C.
- a process for making high purity graphitizable coke comprising placing in a refractory vessel inserted in a metallic double sagger a starting material selected from the group consisting of acenaphthylene, naphthacene and decacyclene, coking said material by heating the same under a protective atmosphere under ambient pressure and at a rate of increase of about 60 C. per hour to a temperature of about 390 C., maintaining said material at said temperature for about 10 hours, increasing said temperature to about 450 C., maintaining said temperature for about 5 to 6 hours, cooling the thus-formed coke, and calcining said coke by heating the same to about 1000 C. at a rate of about 60 C. rise per hour.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Inorganic Chemistry (AREA)
- Coke Industry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
United States Patent Union Carbide Corporation, a corporation of New York No Drawing. Filed Aug. 8, 1960, Ser. No. 47,928
5 Claims. (Cl. 202-63) This invention has reference to the preparation of high purity coke and graphite from certain purified polynuclear aromatic hydrocarbons.
Nuclear applications require an extremely pure grade of graphite for various uses in reactors. In searching for new sources of pure graphite, it has already been proposed to employ organic starting materials because of the ease with which such materials can be purified prior to carbonization and graphitization. One prior proposal has required special coking catalysts to increase the coking value of materials such as naphthalene, anthracence and henanthrene. In another, superatmospheric pressure coking techniques have been necessary. As a result of such specialized operational requirements, however, the concept of using purified polynuclear aromatics as a source of high purity graphite has not gained industrial acceptance.
The main object of the present invention is to provide an eflicient process for making high purity graphite from certain polynuclear aromatic hydrocarbons, which process does not require catalysis or high pressure conditions.
It now has been found in the practice of the invention decacyclene and naphthacene yield appreciable quantities of coke at atmospheric pressure. As is known, deeacyclene is related to acenaphthylene, since three molecules of the latter can be joined to form one of the former.
In the practice of the invention the compound to be coked is placed in a suitable refractory vessel, which is inserted in a metallic double sagger, and placed in a coking oven. The vessel is provided with a protective atmosphere of nitrogen, helium or argon. In the preferred practice of the invention, heating is effected as follows. The temperature is first increased at a rate of about 60 C. per hour to 390 C., held at 390 C. for about hours, increased to 450 C., and held there for 5 to 6 hours, and cooled. To calcine the raw coke thus obtained, the material is placed in a metal or ceramic beaker, enclosed in the double sagger, and heated under ambient pressure at a rate of increasing temperature of about 60 C. per hour to 1000 C., and held at this temperature for about one hour or until all the volatile materials had ice 2 been driven off. Graphitization of the coke can be eifected by any known manner.
Variations in heating periods and temperatures employed in preparing the coke may be made within the scope of the invention. For example, the rate of heating may be varied between 10 and C. per hour with a preferred rate being about 60 C. The first hold temperature may be varied between 350 and 400 C., and the hold period in this temperature range may vary from one to fifteen hours. The final hold temperature may vary between 450 to 500 C., and the hold period between one and ten hours. 'Calcination of the raw coke may be done at 800 to 1000 C. employing the same 10 to 100 C. per hour heating rate up to that temperature.
The appended tables show experimental data highlighting features of the instant invention.
Table I compares the coking values at 450 C. of various polynuclear aromatic hydrocarbons and acenaphthylene. The superiority of acenaphthylene in this respect is clearly demonstrated. Many polynuclear aromatic compounds have been investigated, but none have been observed to give such high yields of high quality coke at atmospheric pressure as acenaphthylene. In addition to giving a good yield of coke, acenaphthylene also gives an excellent grade of graphite when graphitized by conventional methods. Tab-1e II compares the excellent properties of graphite rods prepared from acenaphthylene and from other sources including pressure-coked anthracene, pressure coked Phenanthrene, and commercially available petroleum fractions. The rods were prepared by taking 1000 C. calcined coke (prepared as previously de' scribed) from these sources, grinding, sizing, and mixing the coke with coal tar pitch and extruding this mix into rods. The rods were baked to 1000 C. on a 60 C. per hour schedule, and subsequently graphitized to 3000 C. in a graphite tube furnace. The superior quality of the acenaphthylene-based graphite, particularly the low electrical resistance and coefiicient of thermal expansion, are apparent from the data in Table II. Coefficients of thermal expansion (CT E) of the order of 6X 10- inch/inch/ C., are preferred, and resistances of the order to 300 micro ohm inches or less are considered. good in this art.
Of the many polynuclear aromatic hydrocarbons which have been investigated, three others besides acenaphthylene show appreciable yields of coke at atmospheric pressure. These are naphthacene (2,3-benzanthracene), a-truxene and decacyclene. However, the data in Table III show that these materials, with the exception of decacyclene, yield poor quality graphite in comparison with acenaphthylene, and, therefore, do not detract from the unique behavior of acenaphthylene. It is not too surprising from a comparison of the related structures of acenaphthylene and decacyclene, that decacyclene yields a good graphite, although it is not quite as good in respect to resistance and CT E as that from acenaphthylene.
TABLE I Comparison 0! 450 C. Coking Values of Polynuclear Aromatic Hydrocarbons Hydrocarbon: 450 C. coking value, percent Acenaphthylene 40.1 Decacyclene 92.0 Naphthalene 0.0 Acenaphthene 0.2 Fluoranthene 0.1 Anthracene 0.3 Phenanthrene 0.3 1,2-benzanthracene 1.0 Chrysene 0.2 Pyrene 0.1
' 1. Aprocess. to: makingv high purity graphitizable coke comprising placing ina heating vessel a'starting material 7 selected. from. the. group consisting of ac'enapht-hylene, 75 tween about 450 C., and 500, C., maintaining said tom'- p 7 TABLE II Properties of Graphite Rods From Acenaphthylene Coke 1 and Other Sources 1,000 C, GTE, Coke Source Type of Coke A.D., Resistance. 1n./tn./? C.
Coking Yield, gum/cc ,uOhm In. X
Percent Atmospheric" 38.0 1. 283 3. 6 Pressure 59. 9-77. 3 1. 43-1. 51 290-340 4. 2 do. 1. 51-1. 53 380-400 10 7-12. 6 1.40-1.52 320-424 4. 0-6. 6 Petroleum Thermally Cra 1.61-1. 52 320-395 4. 0-7. 1 Petroleum Virgin Residuals 1. 44 314-470 16.9-30. 6 Petroleum Vacuum Tower Bottoms. 1. 54-1. 62 328-436 15. 3-21 3 Petroleum Duo Sol Extract 1. 327-899 17. 0-17. 7
TABLE III 7 Properties of Graphite Rods l,000 C. Hydrocarbon Type of Structure Coke Yield,
Percent A.D. Resistance, GTE,
gmJcc. 011m In. i11./in./
Aeenaphthylene- 381) 1. 50 283 3. 6
Naphthacene 48. 5 1. 54 352 15. 1
a n't-women"..- 41-. :s 1. so 1, s01 31. a
Melons"... s 1.58 1 324 s 0 application isin. parta continuation of my pre naphthacene and decacyclene. coking said material by vious. application, Serial No. 825,895, filed July 9, 1959,; 70 heating the same at a rate of between about 10 C. and now abandoned. H r j I about C. rise per hour in an inert atmosphere under What is. claimed. is: ambient pressure to-a temperature between about 350 and 400 C., maintaining saidmaterial, at said temperature "for about" tenhours; increasing said temperature to beperature for about 1 to about 10 hours, and then cooling the thus-formed coke.
2. The process of claim 1 wherein said temperature is initially raised to about 390 C. at a rate of about 60 C. per hour.
3. The process of claim 1 wherein the thus-formed coke is calcined by heating to about 800 to about 1000 C. at a rate of between 10 to about 100 C. rise per hour.
4. A process for making high purity graphitizable coke comprising placing in a refractory vessel inserted in a metallic double sagger a starting material selected from the group consisting of acenaphthylene, naphthacene and decacyclene, coking said material by heating the same under a protective atmosphere under ambient pressure and at a rate of increase of about 60 C. per hour to a temperature of about 390 C., maintaining said material at said temperature for about 10 hours, increasing said temperature to about 450 C., maintaining said temperature for about 5 to 6 hours, cooling the thus-formed coke, and calcining said coke by heating the same to about 1000 C. at a rate of about 60 C. rise per hour.
5. In a process for making coke by the pyrolysis of polynuclear aromatic hydrocarbons, the improvement consisting in selecting said hydrocarbons from the group consisting of naphthacene, decacyclene and acenaphthyl- 10 ene.
References Cited in the file of this patent UNITED STATES PATENTS Krebs et al Feb. 23, 1954 Horvitz Sept. 25, 1956
Claims (1)
1. A PROCESS FOR MAKING HIGH PURITY GRAPHITIZABLE COKE COMPRISING PLACING IN A HEATING VESSEL A STARTING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACENAPHTHYLENE, NAPHTHACENE AND DECACYCLENE, COKING SAID MATERIAL BY HEATING THE SAME AT A RATE OF BETWEEN ABOUT 10*C. AND ABOUT 100*C. RISE PER HOUR IN AN INERT ATMOSPHERE UNDER AMBIENT PRESSURE TO A TEMPERATURE BETWEEN ABOUT 350* AND 400*C. MAINTAINING SAID MATERIAL AT SAID TEMPERATURE FOR ABOUT TEN HOURS, INCREASING SAID TEMPERATURE TO BETWEEN ABOUT 450*C., AND 500*C., MAINTAINING SAID TEMPERATURE FOR ABOUT 1 TO ABOUT 10 HOURS, AND THEN COOLING THE THUS-FORMED COKE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47928A US3035989A (en) | 1960-08-08 | 1960-08-08 | Preparation of high purity coke and graphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47928A US3035989A (en) | 1960-08-08 | 1960-08-08 | Preparation of high purity coke and graphite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3035989A true US3035989A (en) | 1962-05-22 |
Family
ID=21951792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US47928A Expired - Lifetime US3035989A (en) | 1960-08-08 | 1960-08-08 | Preparation of high purity coke and graphite |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3035989A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3338817A (en) * | 1965-03-02 | 1967-08-29 | Mobil Oil Corp | Delayed coking process |
| US3347776A (en) * | 1963-06-17 | 1967-10-17 | Union Carbide Corp | Coking a mixture of a hydrocarbon and quinone |
| US3617515A (en) * | 1969-05-26 | 1971-11-02 | Lummus Co | Production of needle coke from coal for pitch |
| US9284190B2 (en) | 2012-07-13 | 2016-03-15 | Corning Incorporated | Electrochemical high rate storage materials, process and electrodes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670322A (en) * | 1951-05-01 | 1954-02-23 | Standard Oil Dev Co | Naphtha reforming process |
| US2764539A (en) * | 1952-08-21 | 1956-09-25 | Frank H Morse | Carbon electrodes |
-
1960
- 1960-08-08 US US47928A patent/US3035989A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2670322A (en) * | 1951-05-01 | 1954-02-23 | Standard Oil Dev Co | Naphtha reforming process |
| US2764539A (en) * | 1952-08-21 | 1956-09-25 | Frank H Morse | Carbon electrodes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3347776A (en) * | 1963-06-17 | 1967-10-17 | Union Carbide Corp | Coking a mixture of a hydrocarbon and quinone |
| US3338817A (en) * | 1965-03-02 | 1967-08-29 | Mobil Oil Corp | Delayed coking process |
| US3617515A (en) * | 1969-05-26 | 1971-11-02 | Lummus Co | Production of needle coke from coal for pitch |
| US9284190B2 (en) | 2012-07-13 | 2016-03-15 | Corning Incorporated | Electrochemical high rate storage materials, process and electrodes |
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