EP0014804A1 - Verfahren zur Flüssigextraktion von Kohle - Google Patents

Verfahren zur Flüssigextraktion von Kohle Download PDF

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Publication number
EP0014804A1
EP0014804A1 EP79302933A EP79302933A EP0014804A1 EP 0014804 A1 EP0014804 A1 EP 0014804A1 EP 79302933 A EP79302933 A EP 79302933A EP 79302933 A EP79302933 A EP 79302933A EP 0014804 A1 EP0014804 A1 EP 0014804A1
Authority
EP
European Patent Office
Prior art keywords
coal
extraction
residence time
solvent
process according
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.)
Granted
Application number
EP79302933A
Other languages
English (en)
French (fr)
Other versions
EP0014804B1 (de
Inventor
James William Clarke
Geoffrey Michael Kimber
Terry Dean Rantell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Publication of EP0014804A1 publication Critical patent/EP0014804A1/de
Application granted granted Critical
Publication of EP0014804B1 publication Critical patent/EP0014804B1/de
Expired legal-status Critical Current

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    • 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
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction

Definitions

  • This invention is concerned with the liquid extraction of coal, more especially with the control of certain aspects of the extraction conditions in order to facilitate the separation of undissolved particles from the extract and to increase extraction yield.
  • the undissolved matter is mainly composed of mineral matter (ash) and certain insoluble carbonaceous substances especially that known as fusain.
  • ash mineral matter
  • fusain insoluble carbonaceous substances especially that known as fusain.
  • Fig. II shows the influence of digestion time on yield and filter cake resistivity, using a hydrogenated anthracene oil, which is a hydrogen donor solvent, and Annesley coal (see below) at a 1:3 coal to solvent ratio and at a temperature of 430°C.
  • the yield as indicated on Fig. 2 is determined by the standard method of quinoline solubility, and shows an almost instantaneous achievement of maximum yield.
  • This invention provides a process for the continuous production of coal extracts which comprises digesting a coal using an aromatic solvent oil under conditions at which the solvent oil is liquid and thereafter filtering from the resulting digest substantially all the undissolved material to yield a filtrate of extracted coal substance in solvent, the digestion being carried out on a continuous basis in at least two stirred reactors in series, whereby the resistivity of the filter cake id minimised.
  • stirred reactors in series Preferably, from 3 to 10 stirred reactors in series are used, more preferably 4 to 7, especially 5, stirred reactors in series are used.
  • all the reactors are of equal size and the same conditions obtain in each but this need not be so, and individual designs may use different sizes and/or conditions for some, or all, of the reactors.
  • reactors and the method of stirring is a matter for normal chemical engineering design. It may be convenient, for example, to construct theoretical reactors within a single reactor shell, thereby minimising costs allied to the maintenance of elevated pressure and temperature.
  • a turbulent flow reactor should provide plug flow and sufficient mixing, but this is not achieved in practice, so that stirring is required. It is important that adequate mixing occurs in the digestion, if this is insufficient, a much slower filtration will result. This is illustrated in Table II below, in which identical reaction conditions were used, in the same digester, with and without stirring.
  • the solvent oil is preferably a coal tar fraction or a highly aromatic petroleum fraction or a hydrogen donor solvent, and these classes of solvent are well known in the art.
  • the coal is suitably a high to low rank bituminous coal, but the invention may be applied to other coals such as brown coal. Reaction conditions may be selected within those known in the art after consideration of filter cake resistivity and extraction yield.
  • the prime coking Beynon coal is extracted in anthracene oil at 430 0 C for a 20 minute residence time, then filtered at 200°C and 138 KNm -2 .
EP19790302933 1979-01-19 1979-12-18 Verfahren zur Flüssigextraktion von Kohle Expired EP0014804B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7902097 1979-01-19
GB7902097A GB2039940B (en) 1979-01-19 1979-01-19 Coal digestion control

Publications (2)

Publication Number Publication Date
EP0014804A1 true EP0014804A1 (de) 1980-09-03
EP0014804B1 EP0014804B1 (de) 1981-10-07

Family

ID=10502629

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790302933 Expired EP0014804B1 (de) 1979-01-19 1979-12-18 Verfahren zur Flüssigextraktion von Kohle

Country Status (6)

Country Link
EP (1) EP0014804B1 (de)
JP (1) JPS5599994A (de)
AU (1) AU530278B2 (de)
CA (1) CA1124668A (de)
DE (1) DE2960946D1 (de)
GB (1) GB2039940B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5118388B2 (ja) * 2007-05-23 2013-01-16 株式会社神戸製鋼所 カーボンブラックの製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE705178C (de) * 1937-10-24 1941-04-19 I G Farbenindustrie Akt Ges Verfahren zur Druckhydrierung oder Druckextraktion von festen kohlenstoffhaltigen Stoffen
US3594304A (en) * 1970-04-13 1971-07-20 Sun Oil Co Thermal liquefaction of coal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117902A (en) * 1976-03-31 1977-10-03 Mitsubishi Heavy Ind Ltd Heat treatment of coal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE705178C (de) * 1937-10-24 1941-04-19 I G Farbenindustrie Akt Ges Verfahren zur Druckhydrierung oder Druckextraktion von festen kohlenstoffhaltigen Stoffen
US3594304A (en) * 1970-04-13 1971-07-20 Sun Oil Co Thermal liquefaction of coal

Also Published As

Publication number Publication date
JPH0114274B2 (de) 1989-03-10
GB2039940B (en) 1982-11-24
GB2039940A (en) 1980-08-20
AU530278B2 (en) 1983-07-07
EP0014804B1 (de) 1981-10-07
CA1124668A (en) 1982-06-01
AU5443280A (en) 1980-07-24
DE2960946D1 (en) 1981-12-17
JPS5599994A (en) 1980-07-30

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