EP2578666B1 - Method for producing a coking additive by delayed coking - Google Patents
Method for producing a coking additive by delayed coking Download PDFInfo
- Publication number
- EP2578666B1 EP2578666B1 EP10852594.0A EP10852594A EP2578666B1 EP 2578666 B1 EP2578666 B1 EP 2578666B1 EP 10852594 A EP10852594 A EP 10852594A EP 2578666 B1 EP2578666 B1 EP 2578666B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coking
- coke
- chamber
- additive
- charge
- 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.)
- Not-in-force
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Classifications
-
- 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
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- 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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/005—Coking (in order to produce liquid products mainly)
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Coke Industry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Description
- This invention relates to oil refining, in particular to delayed coking that produces coke containing 15-25% of volatiles substances, which can be used as a coking additive in a coal coking charge for metallurgical coke production.
- Oil coke with more than 14% but less than 25% volatiles is capable not only of replacing the K-brand (coking) coal, which is in short supply, in coal coking charges, but also of improving the quality of metallurgical coke (Russian Federation Patent
2355729 - There exists technology for forming oil coke by delayed coking of oil residues. This method includes slowly heating raw materials to 490-515°C in a tubular furnace, mixing the raw materials with a recirculant, presenting the coking distillate products formed inside the coking chamber, in a rectification column, which produces bottoms, supplying the bottoms as the secondary raw materials to the coking chamber at 485-495°C and carrying out coking, which results in the formation of coke (Z. I. Syunyaev, "Forming, Refining and Using Petroleum Coke", Moscow: Khimiya: 1973, p. 95).
- The drawback of this method is that the coke formed by its application has a high strength and low concentration of volatiles (up to 9% by mass).
- It is possible to increase the concentration of volatiles in coke by reducing the temperature of the raw materials at the inlet into the coking chamber. However, reducing that temperature and coking at low temperatures results in excessive foaming and, consequently, it increases the probability of the foam getting into the rectification column, then into the furnace, which might result in the plant becoming coked up, shortening the spans between overhauls.
- A delayed coking method, capable of guaranteeing that no direct contact would occur between the primary charge and the vapours reaching the rectification column from the coking chamber during the formation of the secondary charge, can prevent coke foam finding its way inside the reaction spiral tubes of the furnace, the coking up of the plant and thus lengthen the spans between overhauls.
- The technology nearest to the proposed invention is the delayed coking of oil residues, which includes heating the original raw materials to 340-380°C, mixing them with a recirculant- heavy coking gasoil (pyrolisis resin, heavy catalytic cracking gasoil)- in a mixing tank where the secondary charge forms, heating the secondary charge, i.e. the heavy residues formed in the mixing tank, transferring this into the coking chamber at 485-505°C, and coking to form coke (Russian Federation Patent No.
2206595 - The drawback of this invention is the low concentration of volatiles in the final product due to the high coking temperature (485-505°C) and the low efficiency due to extensive foaming, and consequently to not being able to use the coking chamber to its full capacity.
- This invention aims at increasing the concentration of volatiles in the coke and improving the efficiency of the plant.
- This aim is achieved because this method of delayed coking of a coking additive includes preheating of the primary raw materials at 270-350°C, and in particular at 270-330°C, mixing the primary raw materials with the recirculant in the tank for the production of secondary charge, heating the secondary charge, transporting it to the coking chamber, and coking to form the target product. In this invention the secondary charge is heated at 455-470°C before it reaches the coking chamber.
- Moreover, to prevent foaming, an anti-foaming dope is introduced into the coking chamber 3-5 hours before the end of coking.
- Moreover, taking into consideration that the foam developed in low-temperature coking forms a thick layer, the anti-foaming dope is introduced in two to four areas around the perimeter of the coking chamber, so that it covers the entire surface of the foam.
- Coking carried out at low temperatures, because the raw material is charged into the coking chamber at a low temperature, produces coke with a concentration of volatiles of 15-25% to be used as a coking additive.
- Introducing the anti-foaming dope during the last 3-5 hours of the coking process not only reduces the amount of foam forming in the coking chamber but also makes the process more efficient with respect to the primary raw materials.
- The diagram shows the main parts of the plant for carrying out the proposed method for production of a coking additive by the means of delayed coking.
- The proposed method of production of a coking additive in delayed coking works as follows.
- The original raw materials, such as tar, de-asphalting asphalt, oil production extracts, heavy gasoil of catalytic cracking or any mixtures of the above, are heated in a
tubular furnace 1 to 270-350°C, and in particular to 270-330°C, then discharged into themixing tank 2 connected in pairs to the rectification column 3. Heavy coking gasoil, used as the recirculant, is also charged from the rectification column 3 as a side fraction. - The mixture of the primary raw materials and recirculant, which becomes the secondary charge, is heated to 455-470°C in the tubular furnace 4, then fed into the alternately working coking chambers 5 where a coking additive with 15-25% volatiles is gradually accumulated. The distillate coking products, formed in the coking chamber 5, are discharged into the rectification column 3, where they are resolved into a gas, benzene, light and heavy coking gasoil and the bottoms.
- Vapour-like products leave the plant through the top of the column 3, light and heavy gasoils are discharged from the middle part of the column, while the bottoms are removed from the bottom part. To reduce foam formation, 3-5 hours before the end of coking, the anti-foaming dope is introduced in four areas around the perimeter of the coking chamber 5.
- The suggested technology is illustrated with the following four examples: 1-4.
- A mixture of raw materials, comprised of a vacuum visbreaking residue, tar oil and heavy gasoil of catalytic cracking in the ratio of 15:75:10 was coked, using an industrial delayed coking plant. The mixture had the following characteristics: density 1.055 g/cm3, cokeability 25.8% and sulphur content 3.8%. The primary charge was heated in a convection furnace to 320°C, then it was mixed with a recirculate: heavy coking gasoil, discharged from the rectification column as a side fraction. The produced secondary charge was heated in a tubular furnace, then it was fed into the coking chamber to produce a coking additive. When coking was over, the coke was steamed out, water-cooled and discharged by hydraulic means. In Examples 2 and 4, an anti-foaming dope was introduced into the coking chamber 4 hours before the end of the process - to prevent foam formation.
- Coking conditions and results in Examples 1-4 are shown in the Table.
- For comparison, the same charge as in 1-4 was coked, using the technology of the prototype of this invention. The temperature of the secondary charge at the inlet of the coking chamber was 485°C. No anti-foaming dope was used. The result was ordinary electrode coke with a concentration of volatiles of 10.8%. The conditions and results are also presented in the Table.
Table Comparative Data on Coking of Raw Materials Characteristics Example Invention technology Prototype 1 2 3 4 5 Plant efficiency with respect to primary charge, m3/h 96 100 96 98 95 Plant efficiency respective the secondary charge, m3/h 106 110 110 112 105 Secondary charge temperature at the coking chamber inlet, °C 468 468 456 456 485 Coking duration, h 16 16 16 16 16 Coke level in the chamber, m 19.0 20,5 19.5 21.0 19.0 Concentration of volatiles in coke, % 15.1 15.5 21.8 22.4 10.8 Anti-foam ing dope, yes/no No Yes No Yes No - As can be seen from the Table, the coking method suggested by this inventor produces coke that can be used as a coking additive, with a concentration of volatiles higher than 15%. Introducing it into the coking chamber below 456°C is not practicable because bitumen is likely to form, and it would make the steaming out and cooling down of coke difficult. On the other hand, a charge introduced at a temperature above 470°C, will produce coke that contains less than 15% of volatiles.
- Introduction of the anti-foam dope into the top part of the coking chamber reduces the amount of foam that forms during coking, which improves the working efficiency of this technology with respect to the original raw material.
Claims (3)
- A method of producing a coking additive in delayed coking, which includes heating the primary charge to 270-350°C, mixing the primary charge with a recirculate in a tank, which makes a secondary charge, heating the secondary charge and introducing it into the coking chamber, coking to form the target product, different in that the secondary charge is introduced into the coking chamber at 455-470°C.
- A method as in 1, different in that an anti-foaming dope is introduced into the coke chamber 3-5 hours before the end of coking.
- A method as in 1, different in that the anti-foaming dope is introduced into 2-4 areas around the perimeter of the coking chamber.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010122135/05A RU2437915C1 (en) | 2010-06-01 | 2010-06-01 | Procedure for production of coke additive by delayed coking |
PCT/RU2010/000795 WO2011152752A1 (en) | 2010-06-01 | 2010-12-28 | Method for producing a coking additive by delayed coking |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2578666A1 EP2578666A1 (en) | 2013-04-10 |
EP2578666A4 EP2578666A4 (en) | 2016-11-23 |
EP2578666B1 true EP2578666B1 (en) | 2017-11-15 |
Family
ID=45066957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10852594.0A Not-in-force EP2578666B1 (en) | 2010-06-01 | 2010-12-28 | Method for producing a coking additive by delayed coking |
Country Status (10)
Country | Link |
---|---|
US (1) | US20130276587A1 (en) |
EP (1) | EP2578666B1 (en) |
JP (1) | JP2013523942A (en) |
KR (1) | KR20130025875A (en) |
CN (1) | CN102892863B (en) |
BR (1) | BR112012030726A2 (en) |
CA (1) | CA2792300C (en) |
RU (1) | RU2437915C1 (en) |
UA (1) | UA104526C2 (en) |
WO (1) | WO2011152752A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2496852C1 (en) * | 2012-05-11 | 2013-10-27 | Общество С Ограниченной Ответственностью "Проминтех" | Method for obtaining coking additive by delayed coking |
KR20140095965A (en) * | 2012-08-29 | 2014-08-04 | 오브셰스트보 에스 오그라니체노이 오트벳스트베노스트'유 ˝프로민테크˝ | Delayed coking of petroleum residue |
RU2560442C2 (en) * | 2013-11-18 | 2015-08-20 | Государственное унитарное предприятие "Институт нефтехимпереработки Республики Башкортостан" (ГУП "ИНХП РБ") | Method for obtaining of coking additive by slow coking |
RU2576429C2 (en) * | 2014-02-19 | 2016-03-10 | Общество С Ограниченной Ответственностью "Проминтех" | Method of coking additive production by delayed coking (versions) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036736A (en) * | 1972-12-22 | 1977-07-19 | Nippon Mining Co., Ltd. | Process for producing synthetic coking coal and treating cracked oil |
JPS5341681B2 (en) * | 1972-12-22 | 1978-11-06 | ||
JPS5519277B2 (en) * | 1973-07-02 | 1980-05-24 | ||
JPS5736959B2 (en) * | 1973-11-01 | 1982-08-06 | ||
JPH0639587B2 (en) * | 1988-11-14 | 1994-05-25 | 新日鐵化学株式会社 | Pitch coke manufacturing method |
US4983272A (en) * | 1988-11-21 | 1991-01-08 | Lummus Crest, Inc. | Process for delayed coking of coking feedstocks |
US4961840A (en) * | 1989-04-13 | 1990-10-09 | Amoco Corporation | Antifoam process for delayed coking |
US5028311A (en) * | 1990-04-12 | 1991-07-02 | Conoco Inc. | Delayed coking process |
RU2067605C1 (en) * | 1994-06-10 | 1996-10-10 | Институт проблем нефтехимпереработки АН Республики Башкортостан | Method for production of petroleum coke |
RU2206595C1 (en) * | 2001-10-30 | 2003-06-20 | Институт проблем нефтехимпереработки АН Республики Башкортостан | Method for delayed coking of petroleum residues |
JP4865461B2 (en) * | 2006-09-11 | 2012-02-01 | Jx日鉱日石エネルギー株式会社 | Delayed coker heating furnace operation method |
CN103710042B (en) * | 2006-11-17 | 2017-03-01 | 罗杰·G·埃特 | Selective cracking and the coking of component is not needed in coking cycle material and diesel oil |
RU2355729C1 (en) | 2008-02-26 | 2009-05-20 | Закрытое акционерное общество научно-производственное объединение "Восточный научно-исследовательский углехимический институт" (ЗАО "НПО "ВУХИН") | Coke addition |
-
2010
- 2010-06-01 RU RU2010122135/05A patent/RU2437915C1/en active IP Right Revival
- 2010-12-28 CA CA2792300A patent/CA2792300C/en not_active Expired - Fee Related
- 2010-12-28 WO PCT/RU2010/000795 patent/WO2011152752A1/en active Application Filing
- 2010-12-28 CN CN201080065694.7A patent/CN102892863B/en not_active Expired - Fee Related
- 2010-12-28 BR BR112012030726A patent/BR112012030726A2/en not_active Application Discontinuation
- 2010-12-28 EP EP10852594.0A patent/EP2578666B1/en not_active Not-in-force
- 2010-12-28 US US13/701,229 patent/US20130276587A1/en not_active Abandoned
- 2010-12-28 KR KR1020127026056A patent/KR20130025875A/en active Search and Examination
- 2010-12-28 UA UAA201213295A patent/UA104526C2/en unknown
- 2010-12-28 JP JP2013502520A patent/JP2013523942A/en active Pending
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN102892863B (en) | 2014-07-09 |
US20130276587A1 (en) | 2013-10-24 |
JP2013523942A (en) | 2013-06-17 |
CA2792300C (en) | 2016-02-23 |
EP2578666A4 (en) | 2016-11-23 |
RU2437915C1 (en) | 2011-12-27 |
BR112012030726A2 (en) | 2019-05-07 |
CA2792300A1 (en) | 2011-12-08 |
KR20130025875A (en) | 2013-03-12 |
EP2578666A1 (en) | 2013-04-10 |
UA104526C2 (en) | 2014-02-10 |
CN102892863A (en) | 2013-01-23 |
WO2011152752A1 (en) | 2011-12-08 |
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