GB2067590A - Bituminous binder for making roads or other traffic-bearing surfaces - Google Patents
Bituminous binder for making roads or other traffic-bearing surfaces Download PDFInfo
- Publication number
- GB2067590A GB2067590A GB8100009A GB8100009A GB2067590A GB 2067590 A GB2067590 A GB 2067590A GB 8100009 A GB8100009 A GB 8100009A GB 8100009 A GB8100009 A GB 8100009A GB 2067590 A GB2067590 A GB 2067590A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boiling point
- coal
- binder
- pitch
- mixture
- 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
Links
- 239000011230 binding agent Substances 0.000 title claims abstract description 42
- 238000009835 boiling Methods 0.000 claims abstract description 29
- 239000003245 coal Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000006227 byproduct Substances 0.000 claims abstract description 12
- 239000003208 petroleum Substances 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000003849 aromatic solvent Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 3
- 238000002352 steam pyrolysis Methods 0.000 claims description 2
- 239000010426 asphalt Substances 0.000 description 21
- 230000035515 penetration Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 7
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 6
- 239000011295 pitch Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 239000011280 coal tar Substances 0.000 description 3
- 239000011294 coal tar pitch Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003039 volatile agent Substances 0.000 description 3
- 239000011384 asphalt concrete Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 1
- 101100063435 Caenorhabditis elegans din-1 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/005—Working-up pitch, asphalt, bitumen by mixing several fractions (also coaltar fractions with petroleum fractions)
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A binder suited for use in laying traffic-bearing surfaces is produced by disintegrating comminuted coal and/or like carbonaceous raw material with a mixture of petroleum-based and coal-based aromatic solvents having a middle boiling point above 350 DEG C, giving a pitch-like by-product from which optionally up to 15% of a highly volatile fraction up to an end boiling point of about 300 DEG C is topped and to which a high boiling point aromatic hydrocarbon fraction in the boiling point range 320 to 480 DEG C is added in an amount of 0 to 30% while homogenising by heating.
Description
SPECIFICATION
Bituminous binder for making roads or other traffic-bearing surface
The invention relates to the use of a novel bituminous binder for making traffic-bearing surfaces, whether for vehicles, pedestrians or other traffic.
An important product of petroleum refining is bitumen, which is used directly or in a thermally modified form as a binder, especially in road making.
Bitumen replaced coal-tar-based products as a road-making binder since it was cheaply available in a time of plentiful oil reserves; moreover, it has the temperature insensitivity necessary for today's increased volume of traffic, combined with a greater plasticity range.
On account of the worsening scarcity of petroleum and the increasing conversion from heavy refined products to petrol (naphtha) and fuel oil fractions, bottlenecks will also occur in the supply of bitumen. There is an urgent need for bituminous binders that are independent of increasingly scarce petroleum for the raw material.
The bitumen-based binders used hitherto are subdivided according to DIN Norm 1 995 into different classes depending on the varying degrees of hardness (penetration, determined with 100 g every 5 seconds at 25"C, in 1/10 mm); depending on penetration, 7 types of bitumen are differentiated. Distillation bitumen is denoted by the letter B and a number giving the average penetration. The types of bitumen most commonly used in road building have a penetration of 80 to 45.
In addition to bitumen, bitumen/pitch mixtures are also employed nowadays; the necessary pitch is produced in the distillation of coal-tar.
With the increasing demand for bituminous binders in modern road building, a disadvantage arises in the use of the hitherto proposed coal-based binders due to the fact that coal-tar is only limitedly available for this purpose since it is used as a high grade raw material for producing carbon products. If it is intended to use pitch as the sole binder component, the necessary plasticity range (difference between softening point (ring and ball)) and Fraass breaking point can only be achieved by expensive thermal modification of the pitch (see e.g. Velske,
Baustofflehre-Bituminose Stoff, Werner Verlag, Dusseldorf, 1976).
As a further method for obtaining the necessary plasticity range, it has been recommended to suspend finely ground coal in coal-tar pitch. According to the methods described in the literature, the amount of coal may be up to 10% (see e.g. P.A. Bradlet, Austr. Coal Ind. Res.
Lab., Rep PR 68-5, or S. Bagchee, Res. Ind. (India), 1971, 16, 102). In this connection, the coal is dissolved only in very small amounts and therefore does not serve as an actual binder component.
The property characteristics of the types of bitumen used at the present time are given in DIN
Norm 1 995 and shown in Table 1.
Table 1 Road-making bitumen DIN 1995
Type of bitumen B 300 B 200 B 80 B 65 B 45 B 25 B 15
Penetration (1/10 mm) 250-320 160-210 70-100 50-75 35-50 20-30 10-20
Softening point ( C) 27-37 37-44 44-49 49-54 54-49 59-67 67-72 (ring and ball)
Fraass breaking point max. ( C) -20 -15 -10 -8 -6 -2 +3 Replacement products for bitumen must comply as far as possible with these requirements in order to ensure a satisfactory processing and stress behaviour after incorporation in the road.
The object of the present invention was to provide a new bituminous binder for making roads or other traffic-bearing surfaces which binder can meet the requirements of modern road making and is largely based on coal as the raw material, coal enjoying a long term availability.
According to the invention, this objective can be achieved by using as binder a pitch-like byproduct produced by disintegrating communited coal and/or similar carbonaceous raw material using a mixture of petroleum-based and coal-based aromatic solvents having a middle boiling point above 350"C, topping (i.e. distilling off) optionally up to 15% of highly volatile fractions up to an end boiling point of about 300"C, and adding high boiling aromatic hydrocarbon fractions in the boiling point range 320 to 480 C in amounts of O to 30% while homogenising by heating. The binder is suitably used by preparing a mixture of aggregate and molten binder and employing this mixture to lay a traffic-bearing surface.
The production of high aromatic content by-products now used as starting material for binders is the subject of our earlier Patent Application entitled "Process for Preparing Highly Aromatic
Pitch-like Hydrocarbons" which claimed priority from German Patent Application P 29 35 039.8.
Production is preferably carried out by disintegrating coal having a high or low volatiles content using aromatised residues from the steam pyrolysis of petroleum fractions in admixture with coal-based aromatic mixtures having a middle boiling point above 350 C as complementary solvent, optionally with the addition of further solvent, e.g. anthracene oil. In practice the petroleum-derived aromatised residues also have a middle boiling point above 350"C.
It has now surprisingly been found that the predominantly coal-based pitch-like coal byproduct produced according to the present invention meet the important criteria for bituminous road-making binders such as penetration, softening behaviour and breaking point, as are described in DIN Norm 1 995. This is especially surprising as regards the plasticity range, since the binders hitherto produced directly on the basis of coal-based pitch do not meet the requirements of a large plasticity range of at least approximately 50"C, but simply exhibit a difference of 30"C between the softening point (ring and ball) and the Fraass breaking point.
The invention is illustrated by the following non-limiting examples.
EXAMPLE 1
25 parts by weight of Westerholt coal (volatiles content 37 to 38%) was disintegrated with 33.3 parts by weight of pyrolysis oil (average boiling point 366"C) obtained from the cracking of gas oil, 25 parts by weight of pitch distillate obtained from the heat/pressure treatment of coal-tar pitch, and 1 6.7 parts by weight of filtered anthracene oil (see H.G. Franck, G. Collin;
Steinkohlenteer, Springer, Berlin, 1986, page 56), the disintegrating being effected by reacting the solvent mixture with the coal at 370 C for a reaction time of 3 hours at a maximum pressure of 20 bars. 10% of volatile constituents were separated from this coal by-product by distillation up to about 300"C.
The binder thus obtained was investigated as regards its properties in comparison to the standardised types of bitumen; it was found that the binder according to the invention satisfied the most important criteria for a B 25 bitumen, see Table 2.
EXAMPLE 2
82 parts of the binder produced according to Example 1 was mixed with 1 8 parts of a high boiling point, aromatic tar fraction (boiling point range 350-450"C) while heating.
The resultant binder corresponds as regards the most important property criteria to a B 65 bitumen, see Table 2.
EXAMPLE 3
25 parts by weight of a free-burning coal (Ensdorf, Saar, volatiles content 39-40% was disintegrated at 370"C for a reaction time of 3 hours with 33.3 parts by weight of pyrolysis oil (average boiling point 358to) obtained from the cracking of crude petrol, 25 parts by weight of pitch distillate obtained from the heat/pressure treatment of coal-tar pitch, and 16.7 parts by weight of filtered anthracene oil. The maximum pressure was 45 bars.
1 2 parts by weight was distilled off up to about 300 C from the coal by-product thus obtained.
The residue obtained was homogenised with 1 5 parts by weight of a high boiling point aromatic fraction (see Example 2) giving a binder corresponding to B 45 bitumen see Table 2.
EXAMPLE 4 1 2 parts by weight of low boiling point constituents were separated as described above from the pitch-like coal by-product produced according to Example 3. The residue was homogenised with 20 parts by weight of a high boiling point aromatic mixture as in Example 2. The binder thus produced corresponds to a B 80 bitumen, see Table 2.
Table 2: Road-making binders obtained by disintegrating coal
Binder according Binder according Binder according Binder according to Example 1 to Example 1 to Example 3 to Example 4
Penetration (1/10 mm) 24 65 45 98
Softening point ( C) 65 52 56 48 (ring and ball)
Fraass breaking point max ( C) -4 -10 -8 -12
Plasticity range ( C) 69 62 64 60
Corresponding type of bitumen B 25 B 65 B 45 B 80 The binders produced according to Example 1 to 4 can also be produced by separating the low boiling point fractions only after the addition of the high boiling point aromatic fraction. This procedure is especially advantageous if extremely large plasticity ranges are to be achieved.
The applicability of a binder according to the invention having a penetration value of 65 was tested in comparison with a B 65 bitumen on a mineral mixture for producing an asphaltconcrete mix. An asphalt-concrete mix was produced from 7.2 parts by weight (referred to 100 parts by weight of mix) of the binder produced according to Example 2 and: 15% Edelsplitt basalt 8/11 mm 18% Edelsplitt basalt 5/ 8 mm 18% Edelsplitt basalt 2/ 5 mm 25% Brechsand basalt 0/ 2 mm 17% Natural sand 0/ 2 mm
7% Limestone flour 100%
A Marshall stability according to DIN 1 996 of 20.0 kN was obtained.
A corresponding Marshall body produced from the same mineral mixture and a B 65 bitumen exhibited on the other hand a Marshall stability of only 11.1 kN.
The advantageous deformation stability of the binders according to the invention is apparent.
Claims (9)
1. A method of laying a traffic-bearing surface in which a mixture of aggregate and molten binder is prepared and then laid, wherein the binder is produced by disintegrating comminuted coal and/or like carbonaceous raw material with a mixture of petroleum-based and coal-based aromatic solvents having a middle boiling point above 350"C, giving a pitch-like by-product from which optionally up to 15% of a highly volatile fraction up to an end boiling point of about 300"C is topped and to which a high boiling point aromatic hydrocarbon fraction boiling in the boiling point range 320 to 480"C is added in an amount of O to 30% while homogenising by heating.
2. A method according to claim 1 in which the binder is a highly aromatic, pitch-like coal by-product obtained by disintegrating coal with an aromatic residue obtained from the steam pyrolysis of a petroleum fraction, in admixture with a coal-based aromatic mixture, optionally with the addition of further solvent, using a pressure of up to 50 bars and a temperature of between 250 and 420"C.
3. A method of laying a traffic-bearing surface in which a mixture of aggregate and molten binder is prepared and then laid, wherein the binder is produced by a process substantially as described herein in the Examples.
4. A process for producing a binder, which comprises disintegrating comminuted coal and/or like carbonaceous raw material with a mixture of petroleum-based and coal-based aromatic solvents having a middle boiling point above 350 C, giving a pitch-like by-product from which optionally up to 15% of a highly volatile fraction up to an end boiling point of about 300"C is topped and to which a high boiling aromatic hydrocarbon fraction in the boiling point range 320 to 480"C is added in an amount of O to 30% while homogenising by heating.
5. A process according to claim 4, wherein the pitch-like by-product is subjected to topping.
6. A process according to claim 4 or 5, wherein a high-boiling point aromatic hydrocarbon fraction is added to the optionally topped by-product.
7. A process substantially as described herein in the Examples.
8. A method according to claim 1, 2 or 3 which employs a binder made by a process according to claim 4, 5, 6 or 7.
9. A traffic-bearing surface when laid by a method according to claim 1, 2, 3 or 8.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3001078A DE3001078C2 (en) | 1980-01-14 | 1980-01-14 | Binder for road construction |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2067590A true GB2067590A (en) | 1981-07-30 |
GB2067590B GB2067590B (en) | 1983-10-12 |
Family
ID=6091985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8100009A Expired GB2067590B (en) | 1980-01-14 | 1981-01-02 | Bituminous binder for making roads or other traffic-bearing surfaces |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU539049B2 (en) |
DE (1) | DE3001078C2 (en) |
FR (1) | FR2473577A1 (en) |
GB (1) | GB2067590B (en) |
ZA (1) | ZA808090B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109593368B (en) * | 2017-09-30 | 2022-04-19 | 国家能源投资集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1925005A (en) * | 1926-03-25 | 1933-08-29 | Koppers Co Inc | Coal treatment process |
ZA755048B (en) * | 1974-08-26 | 1976-07-28 | Lummus Co | Coal-liquefaction |
DE2935039C2 (en) * | 1979-08-30 | 1982-11-25 | Rütgerswerke AG, 6000 Frankfurt | Process for the production of a highly aromatic, pitch-like carbon material |
DE2944689C2 (en) * | 1979-11-06 | 1982-07-08 | Rütgerswerke AG, 6000 Frankfurt | Method for bringing carbon into solution |
DE3030723C2 (en) * | 1980-08-14 | 1984-09-20 | Rütgerswerke AG, 6000 Frankfurt | Process for dissolving coal in hydrocarbon mixtures |
-
1980
- 1980-01-14 DE DE3001078A patent/DE3001078C2/en not_active Expired
- 1980-12-29 ZA ZA00808090A patent/ZA808090B/en unknown
-
1981
- 1981-01-02 GB GB8100009A patent/GB2067590B/en not_active Expired
- 1981-01-13 AU AU66177/81A patent/AU539049B2/en not_active Ceased
- 1981-01-14 FR FR8100568A patent/FR2473577A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3001078A1 (en) | 1981-07-23 |
GB2067590B (en) | 1983-10-12 |
FR2473577B1 (en) | 1984-12-14 |
FR2473577A1 (en) | 1981-07-17 |
DE3001078C2 (en) | 1982-03-25 |
ZA808090B (en) | 1982-01-27 |
AU539049B2 (en) | 1984-09-06 |
AU6617781A (en) | 1981-07-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR20110121694A (en) | Process for producing binder for coke production and process for producing coke | |
US2992181A (en) | Process for producing a petroleum base pitch | |
US3173851A (en) | Electrode pitch binders | |
CA3082911A1 (en) | Method for modifying asphalt using oil having reduced polycyclic aromatic hydrocarbon (pah) content obtained from the pyrolysis of waste tires | |
US4415429A (en) | Process for the preparation of highly aromatic pitchlike hydrocarbons | |
US4358554A (en) | Process for repairing asphalt pavement | |
US4278469A (en) | Process for repairing asphalt pavement | |
US4052290A (en) | Asphalt compositions | |
US4188235A (en) | Electrode binder composition | |
GB2067590A (en) | Bituminous binder for making roads or other traffic-bearing surfaces | |
EP0245888B1 (en) | Process for the preparation of a hydrocarbonaceous distillate and a residue | |
US3355377A (en) | Activated carbon in the preparation of binder pitch | |
KR20120042117A (en) | Method for preparing coal tar pitch having improved compatibility with asphalt and asphalt containing the same | |
CA1279598C (en) | Process for the preparation of bitumen | |
CA1225502A (en) | Tar fraction for driveway sealers using oxidized coal tar distillate | |
JP3695872B2 (en) | Modified asphalt composition | |
US5534134A (en) | Low PAH pitch and process for same | |
CS209493B2 (en) | Mixture for construction of the roads from the black coal tar | |
US8968551B2 (en) | Synergistic asphalt crude compositions | |
SU1055338A3 (en) | Method for dissolving coal | |
US4224079A (en) | Asphaltic paving compositions and method of preparation from solvent refined coal | |
US4430194A (en) | Method for the production of a highly aromatic pitch-like coal by-product | |
EP0337579B1 (en) | Briquette binder | |
GB2065696A (en) | Process for the coking quality of coals having unsatisfactory properties | |
SU1450750A3 (en) | Method of producing binder containing hydrocarbon for fuel briquettes |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |