CN104388119A - Method for producing color ink solvent oil from coal tar and completely circulated tail oil - Google Patents
Method for producing color ink solvent oil from coal tar and completely circulated tail oil Download PDFInfo
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- CN104388119A CN104388119A CN201410675659.7A CN201410675659A CN104388119A CN 104388119 A CN104388119 A CN 104388119A CN 201410675659 A CN201410675659 A CN 201410675659A CN 104388119 A CN104388119 A CN 104388119A
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- coal tar
- ink solvent
- hydrogenation
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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
- C10G67/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only
- C10G67/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one process for refining in the absence of hydrogen only plural serial stages only
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
-
- 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
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
- C10G45/06—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
- C10G45/08—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof in combination with chromium, molybdenum, or tungsten metals, or compounds thereof
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a method for producing color ink solvent oil from coal tar and completely circulated tail oil. The method comprises the following specific steps: mixing coal tar, hydrogenation tail oil greater than 360 DEG C and hydrogen to obtain a mixture, enabling the mixture to enter a hydrogenation reactor and hydrotreating, wherein the hydrogenation reaction conditions are as follows: the reaction temperature is 300-400 DEG C, the reaction pressure is 10-15MPa and the volume ratio of hydrogen to oil is (800:1) to (1500:1); fractionating hydrogenated products; and enabling liquid products obtained by hydrogenation of coal tar to enter a fractionating tower for fractionating to obtain gasoline fractions less than 200 DEG C, 200-270 DEG C ink solvent oil fractions, 270-300 DEG C ink solvent oil fractions, 300-360 DEG C ink solvent oil fraction and tail oil components greater than 360 DEG C. Based on the characteristic that hydrogenated products of coal tar have a large number of cycloalkanes and low-content aromatic hydrocarbon, high value-added products such as gasoline and a series of ink solvent oil are obtained by carrying out mixing and hydrogenation on coal tar and tail oil, so that the industrial chain of coal tar hydrogenation is extended and the utilization value of coal tar is improved.
Description
Technical field
The present invention relates to color printing ink solvent oil field, the coal tar particularly relating to a kind of tail oil recycle to extinction produces the method for color printing ink solvent oil.
Background technology
Existing printing oil solvent, it is produced source and mostly comes from oil, mainly obtains appropriate fractions by the crude oil of paraffinic base and cycloalkyl through distillation, then through product that different complete processing obtains.Its working method is mainly four kinds: first method is raw material with paraffinic crude, obtains gasoline fraction through air distillation, and this cut obtains product by physics after refining and rectifying; The second working method be the Straight run naphthas that obtains with paraffinic crude air distillation for raw material, after cold press dewaxing, hydrofining, obtain product; The third method is the product obtained after distillation, mediation for raw material with the appropriate fractions of naphthenic base crude; 4th kind of method is the product obtained after distillation, mediation for raw material with the extract oil of lubricating oil of naphthenic base crude.The product aniline point that first three methods obtains is high, poorly soluble with ink resin, thus must use the true solvent that price is more expensive more; Strengthen the dissolving power of solvent system to resin, the cost of ink certainly will be increased like this.The 4th kind of product that method obtains, pour point high and low temperature poor fluidity, is applied to its fast solvent release performance in offset lithography colored ink undesirable.
Patent CN101457039A discloses a kind of method preparing printing oil solvent with cycloalkyl diesel oil and paraffinic base diesel oil blending, the reduced pressure distillate of naphthenic base crude is the diesel oil distillate that raw material obtains through deep processing process, obtains 250 ~ 310 DEG C of cuts through rectifying cutting; Paraffinic base diesel oil distillate is carried out caustic prescrub, settlement separate go out refined diesel oil, then cut out 250 ~ 310 DEG C of cuts by rectifying, gained two kinds of distillates be in harmonious proportion evenly prepare printing oil solvent by the weight ratio of 4: 6 ~ 6: 4 at normal temperatures and pressures.Patent CN101643602A discloses a kind of preparation method of color printing ink solvent oil, the method utilizes naphthenic crudes cut, adopt special solvent Porous deproteinized bone technique, carclazyte decolor refined technology produces base oil, then add exclusive composite additive and be in harmonious proportion and form.Above-mentioned printing oil solvent preparation method all adopts petroleum raw material, and its product aniline point is high, poorly soluble with ink resin.Chinese patent CN102242002B discloses a kind of preparation method of series ink solvent oil, be less than 370 DEG C of cuts, coal tar or shale oil with coal direct liquefaction generation oil to be less than 370 DEG C of cuts for stock oil, through Deep Hydrotreating, one or more snippets narrow fraction that rectifying cuts 230 ~ 370 DEG C of wide fractions or cuts in wide fraction, namely obtains series ink solvent oil and special ink solvent oil.But the method exists following problem, in raw material, only light constituent (being namely less than 370 DEG C of cuts) is fully used, and remainder tail oil (being greater than 370 DEG C of cuts) does not utilize.Chinese patent CN102703116A discloses a kind of preparation method of printing oil solvent: shale oil or coal tar distillation are obtained mink cell focus and lightweight oil, on the one hand hydrofining is carried out to lightweight oil and obtain hydrofined oil, carrying out hydrocracking to mink cell focus obtains hydrocrackates on the other hand, above-mentioned two kinds of hydrogenation oil products are distilled, cut within the scope of 230 DEG C ~ 360 DEG C, obtain printing oil solvent, although the method raw material availability is high, but technical process is comparatively complicated, be unfavorable for realizing industrialization, and quality product is not high.
In view of above-mentioned defect, creator of the present invention obtains this creation finally through long research and practice.
Summary of the invention
A kind of coal tar of tail oil recycle to extinction is the object of the present invention is to provide to produce the method for color printing ink solvent oil, in order to overcome above-mentioned technological deficiency.
For achieving the above object, the coal tar that the invention provides a kind of tail oil recycle to extinction produces the method for color printing ink solvent oil, and this detailed process is:
Step a, coal tar, be greater than the hydrogenation tail oil of 360 DEG C and hydrogen mixing after enter hydrogenator and carry out hydrotreatment; Wherein,
Described hydrogenation conditions is: temperature of reaction is 300 ~ 400 DEG C, and reaction pressure is 10 ~ 15MPa, and hydrogen to oil volume ratio is 800: 1 ~ 1500: 1, is 0.3 ~ 0.6h relative to the liquid volume air speed of Hydrobon catalyst A
-1, be 0.6 ~ 1.0h relative to the liquid volume air speed of Hydrobon catalyst B
-1;
Described coal tar is 500 ~ 700 DEG C of coalite tars or 700 ~ 900 DEG C of coal-tar middle oils that produce in coal pyrolysis process;
The mass ratio of described coal tar and tail oil is 5: 5 ~ 7: 3;
Step b, the fractionation of hydrogenation products;
The liquid product that coal tar hydrogenating obtains enters separation column and carries out fractionation, obtains being less than the gasoline fraction of 200 DEG C, 200-270 DEG C printing ink solvent oil distillate, 270-300 DEG C printing ink solvent oil distillate, 300-360 DEG C printing ink solvent oil distillate and is greater than the tail oil component of 360 DEG C.
2, the coal tar of tail oil recycle to extinction according to claim 1 produces the method for color printing ink solvent oil, it is characterized in that, in above-mentioned steps a, in above-mentioned hydroprocessing processes, described catalyzer is the Hydrobon catalyst of two kinds of gratings, is followed successively by Hydrobon catalyst A and Hydrobon catalyst B.
3, the coal tar of tail oil recycle to extinction according to claim 2 produces the method for color printing ink solvent oil, it is characterized in that, described Hydrobon catalyst A is: the molybdenum-nickel type catalyzer taking aluminium sesquioxide as carrier, molybdic oxide content 2 ~ 8wt% in catalyst activity metal, nickel oxide content 0.5 ~ 3wt%, total pore volume is greater than 0.5mL/g, and specific surface area is greater than 120m
2/ g.
The coal tar of the tail oil recycle to extinction 4, according to Claims 2 or 3 produces the method for color printing ink solvent oil, it is characterized in that, described Hydrobon catalyst B is: the tungsten-ni-type catalyzer taking aluminium sesquioxide as carrier, such catalyzer has good arene saturating activity.In catalyst activity metal, tungstic oxide content is greater than 15wt%, and nickel oxide content is greater than 2wt%, and total pore volume is greater than 0.25mL/g, and specific surface area is greater than 140m
2/ g.
Beneficial effect of the present invention is compared with prior art: (1) the present invention is directed to the feature that coal tar hydrogenating product has a large amount of naphthenic hydrocarbon and low content arene, coal tar and tail oil mixed hydrogenation are obtained the high value added product such as gasoline, series ink solvent oil by the present invention, extend coal tar hydrogenating industrial chain, improve the utility value of coal tar.
(2) be that raw material is simple for the production technique of a series of trade mark printing oil solvent through Hydrogenation with coal tar, facility investment is few, instant effect, and added value of product is high, and wide prospect has been opened up in the further utilization for coal tar.
(3) hydrogenation technique feature of the present invention adopts full fraction of coal tar hydrogenation technique.In addition, due to the cycloalkyl characteristic of coal tar, in hydrogenation process, do not use the catalyst for hydrogenation de-waxing of conventional petroleum cut, use commercially available business Hydrobon catalyst under certain processing condition, just can ensure to obtain high-quality series ink solvent oil.
(4) method of the present invention has widened printing oil solvent raw material sources, and the oil quality obtained is good, can make ink easily release and volatilization in printing process, can not be stained with the back of the body again, not set-off.There is lighter color, the characteristic of anti-oxidant, good security.
Accompanying drawing explanation
Fig. 1 is coal tar hydrogenating printing oil solvent process flow diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
The detailed process of the method for the coal tar production color printing ink solvent oil of tail oil recycle to extinction of the present invention is:
Step a, coal tar and the hydrogenation tail oil mixed hydrogenation process being greater than 360 DEG C;
Coal tar, be greater than the hydrogenation tail oil of 360 DEG C and hydrogen mixing after enter hydrogenator and carry out hydrotreatment, wherein,
Described coal tar is 500 ~ 700 DEG C of coalite tars or 700 ~ 900 DEG C of coal-tar middle oils that produce in coal pyrolysis process;
The mass ratio of described feed coal tar and tail oil is 5: 5 ~ 7: 3;
Described catalyzer is the Hydrobon catalyst of two kinds of gratings, is followed successively by Hydrobon catalyst A and Hydrobon catalyst B.
Described Hydrobon catalyst A is: the molybdenum-nickel type catalyzer taking aluminium sesquioxide as carrier, and molybdic oxide content 2 ~ 8wt%, nickel oxide content 0.5 ~ 3wt% in catalyst activity metal, total pore volume is greater than 0.5mL/g, and specific surface area is greater than 120m
2/ g.
Described Hydrobon catalyst B is: the tungsten-ni-type catalyzer taking aluminium sesquioxide as carrier, such catalyzer has good arene saturating activity.In catalyst activity metal, tungstic oxide content is greater than 15wt%, and nickel oxide content is greater than 2wt%, and total pore volume is greater than 0.25mL/g, and specific surface area is greater than 140m
2/ g.
Described hydrogenation conditions is: temperature of reaction is 300 ~ 400 DEG C, and reaction pressure is 10 ~ 15MPa, and hydrogen to oil volume ratio is 800: 1 ~ 1500: 1, is 0.3 ~ 0.6h relative to the liquid volume air speed of Hydrobon catalyst A
-1, be 0.6 ~ 1.0h relative to the liquid volume air speed of Hydrobon catalyst B
-1;
Step b, the fractionation of hydrogenation products;
The liquid product that coal tar hydrogenating obtains enters separation column and carries out fractionation, obtains being less than the gasoline fraction of 200 DEG C, 200-270 DEG C printing ink solvent oil distillate, 270-300 DEG C printing ink solvent oil distillate, 300-360 DEG C printing ink solvent oil distillate and is greater than the tail oil component of 360 DEG C.
Refer to shown in Fig. 1, it is coal tar hydrogenating printing oil solvent process flow diagram of the present invention, and the coal tar oil properties adopted in the present embodiment sees the following form,
Coalite tar character in table 1
Embodiment one:
Hydrobon catalyst A adopts the RG-10A type catalyzer of China Petroleum & Chemical Corporation Research Institute of Petroleum; Hydrobon catalyst B adopts the RN-10 type catalyzer of catalyzer branch office of Sinopec Group.The reaction conditions of hydrotreatment is as follows: the mass ratio of feed coal tar and tail oil is 7: 3, and temperature of reaction is 380 DEG C, and reaction pressure is 14MPa, and hydrogen to oil volume ratio is 1000: 1, is 0.4h relative to the liquid volume air speed of Hydrobon catalyst A
-1, be 0.8h relative to the liquid volume air speed of Hydrobon catalyst B
-1.
Under these processing condition, the liquid product that coal tar hydrogenating obtains is entered separation column and carry out fractionation, obtain being less than the series ink solvent oil of the gasoline fraction of 200 DEG C, 200-270 DEG C, 270-300 DEG C, 300-360 DEG C three cuts, and be greater than the tail oil component of 360 DEG C.After fractionation, the yield of each component is in table 2, and the character of gasoline fraction is in table 3.As shown in Table 3, the sulphur of this gasoline fraction, nitrogen, olefin(e) centent are very low, and aromaticity content is less than 40%.Research octane number (RON) 82 is less than 90, and other indexs all reach motor spirit GB17930-2006 standard, can as premium blend component or solvent oil.Series ink solvent oil product main performance index is in table 4.
The yield of the various products that table 2 embodiment one hydrotreatment obtains
Note: calculate with feed coal tar 100%.
The gasoline fraction character that table 3 embodiment one hydrotreatment obtains
The series ink solvent oil character that table 4 embodiment one hydrotreatment obtains
Embodiment two:
Hydrobon catalyst A is identical with embodiment one with Hydrobon catalyst B.The reaction conditions of hydrotreatment is as follows: the mass ratio of feed coal tar and tail oil is 7: 3, and temperature of reaction is 350 DEG C, and reaction pressure is 13MPa, and hydrogen to oil volume ratio is 900: 1, is 0.5h relative to the liquid volume air speed of Hydrobon catalyst A
-1, be 0.9h relative to the liquid volume air speed of catalyst B
-1.
Under these processing condition, the liquid product that coal tar hydrogenating obtains is entered separation column and carry out fractionation, obtain being less than the series ink solvent oil of the gasoline fraction of 200 DEG C, 200-270 DEG C, 270-300 DEG C, 300-360 DEG C three cuts, and be greater than the tail oil component of 360 DEG C.After fractionation, the yield of each component is in table 5, and the character of gasoline fraction is in table 6, and series ink solvent oil product main performance index is in table 7.
As shown in Table 5, along with the mitigation of hydroconversion condition, the yield of light ends oil slightly reduces, but printing oil solvent yield reduces less; As shown in Table 6, this gasoline fraction character is close with embodiment 1, and research octane number (RON) 79 is less than 90, and other indexs all reach motor spirit GB17930-2006 standard, can as premium blend component or solvent oil; As shown in Table 7, the printing oil solvent obtained all meets respective quality standard.
The yield of the various products that table 5 embodiment two hydrotreatment obtains
Note: calculate with feed coal tar 100%.
The gasoline fraction character that table 6 embodiment two hydrotreatment obtains
The series ink solvent oil character that table 7 embodiment two hydrotreatment obtains
Embodiment three:
Hydrobon catalyst A adopts the RG-10B type catalyzer of China Petroleum & Chemical Corporation Research Institute of Petroleum, Hydrobon catalyst B adopts the FV-1 type catalyzer of Sinopec Group, hydrogenation conditions is identical with embodiment one, under these processing condition, the liquid product that coal tar hydrogenating obtains is entered separation column and carry out fractionation, obtain the gasoline fraction being less than 200 DEG C, 200-270 DEG C, 270-300 DEG C, the series ink solvent oil of 300-360 DEG C of three cuts, with the tail oil component being greater than 360 DEG C, table 8, 9 and 10 yields being respectively the various products that hydrotreatment in embodiment three obtains, the series ink solvent oil character that gasoline fraction character and hydrotreatment obtain.
As shown in Table 10, the printing oil solvent obtained all meets respective quality standard.
The yield of the various products that table 8 embodiment three hydrotreatment obtains
Note: calculate with feed coal tar 100%.
The gasoline fraction character that table 9 embodiment three hydrotreatment obtains
The series ink solvent oil character that table 10 embodiment three hydrotreatment obtains
The foregoing is only preferred embodiment of the present invention, is only illustrative for invention, and nonrestrictive.Those skilled in the art is understood, and can carry out many changes in the spirit and scope that invention claim limits to it, amendment, even equivalence, but all will fall within the scope of protection of the present invention.
Claims (4)
1. the coal tar of tail oil recycle to extinction produces a method for color printing ink solvent oil, and it is characterized in that, this detailed process is:
Step a, coal tar, be greater than the hydrogenation tail oil of 360 DEG C and hydrogen mixing after enter hydrogenator and carry out hydrotreatment; Wherein,
Described hydrogenation conditions is: temperature of reaction is 300 ~ 400 DEG C, and reaction pressure is 10 ~ 15MPa, and hydrogen to oil volume ratio is 800: 1 ~ 1500: 1, is 0.3 ~ 0.6h relative to the liquid volume air speed of Hydrobon catalyst A
-1, be 0.6 ~ 1.0h relative to the liquid volume air speed of Hydrobon catalyst B
-1;
Described coal tar is 500 ~ 700 DEG C of coalite tars or 700 ~ 900 DEG C of coal-tar middle oils that produce in coal pyrolysis process;
The mass ratio of described coal tar and tail oil is 5: 5 ~ 7: 3;
Step b, the fractionation of hydrogenation products;
The liquid product that coal tar hydrogenating obtains enters separation column and carries out fractionation, obtains being less than the gasoline fraction of 200 DEG C, 200-270 DEG C printing ink solvent oil distillate, 270-300 DEG C printing ink solvent oil distillate, 300-360 DEG C printing ink solvent oil distillate and is greater than the tail oil component of 360 DEG C.
2. the coal tar of tail oil recycle to extinction according to claim 1 produces the method for color printing ink solvent oil, it is characterized in that, in above-mentioned steps a, in above-mentioned hydroprocessing processes, described catalyzer is the Hydrobon catalyst of two kinds of gratings, is followed successively by Hydrobon catalyst A and Hydrobon catalyst B.
3. the coal tar of tail oil recycle to extinction according to claim 2 produces the method for color printing ink solvent oil, it is characterized in that, described Hydrobon catalyst A is: the molybdenum-nickel type catalyzer taking aluminium sesquioxide as carrier, molybdic oxide content 2 ~ 8wt% in catalyst activity metal, nickel oxide content 0.5 ~ 3wt%, total pore volume is greater than 0.5mL/g, and specific surface area is greater than 120m
2/ g.
4. the coal tar of the tail oil recycle to extinction according to Claims 2 or 3 produces the method for color printing ink solvent oil, it is characterized in that, described Hydrobon catalyst B is: the tungsten-ni-type catalyzer taking aluminium sesquioxide as carrier, such catalyzer has good arene saturating activity.In catalyst activity metal, tungstic oxide content is greater than 15wt%, and nickel oxide content is greater than 2wt%, and total pore volume is greater than 0.25mL/g, and specific surface area is greater than 140m
2/ g.
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| CN201410675659.7A CN104388119B (en) | 2014-04-14 | 2014-11-24 | The coal tar of a kind of tail oil complete alternation produces the method for color printing ink solvent oil |
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| CN201410154008 | 2014-04-14 | ||
| CN2014101540083 | 2014-04-14 | ||
| CN201410675659.7A CN104388119B (en) | 2014-04-14 | 2014-11-24 | The coal tar of a kind of tail oil complete alternation produces the method for color printing ink solvent oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114423830A (en) * | 2019-09-17 | 2022-04-29 | 克斯莫石油株式会社 | Naphthenic solvent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2255956C1 (en) * | 2004-02-18 | 2005-07-10 | Озеренко Алексей Анатольевич | Coal-tar pitch processing method |
| CN102242002A (en) * | 2010-05-14 | 2011-11-16 | 煤炭科学研究总院 | Preparation method of series ink solvent oil |
| CN103468285A (en) * | 2013-09-13 | 2013-12-25 | 神木富油能源科技有限公司 | Method for preparing fuel oil with medium and low temperature coal tar generated through pulverized coal pyrolysis |
-
2014
- 2014-11-24 CN CN201410675659.7A patent/CN104388119B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2255956C1 (en) * | 2004-02-18 | 2005-07-10 | Озеренко Алексей Анатольевич | Coal-tar pitch processing method |
| CN102242002A (en) * | 2010-05-14 | 2011-11-16 | 煤炭科学研究总院 | Preparation method of series ink solvent oil |
| CN103468285A (en) * | 2013-09-13 | 2013-12-25 | 神木富油能源科技有限公司 | Method for preparing fuel oil with medium and low temperature coal tar generated through pulverized coal pyrolysis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114423830A (en) * | 2019-09-17 | 2022-04-29 | 克斯莫石油株式会社 | Naphthenic solvent |
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