WO1987002694A1 - Method and apparatus for foaming of bitumen - Google Patents
Method and apparatus for foaming of bitumen Download PDFInfo
- Publication number
- WO1987002694A1 WO1987002694A1 PCT/NO1986/000074 NO8600074W WO8702694A1 WO 1987002694 A1 WO1987002694 A1 WO 1987002694A1 NO 8600074 W NO8600074 W NO 8600074W WO 8702694 A1 WO8702694 A1 WO 8702694A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bitumen
- water
- pressure
- foaming
- valve
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/16—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
- E01C19/17—Application by spraying or throwing
- E01C19/174—Apparatus with pump-discharge
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/45—Portable apparatus for preparing, or for preparing and applying to the road, compound liquid binders, e.g. emulsified bitumen, fluxed asphalt
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
Definitions
- the invention relates to a method and an apparatus for foaming of bitumen to be used e.g. as a coating or film on road materials such as gravel, crushed rock and the like.
- bitumen is heated to a temperature at which it t exists in a liquid state.
- the purpose of the foaming is to increase the volume of the bitumen and thus provide a thinner coating and a better utilization of the bitumen material than would be possible by spraying the liquid bitumen without any kind of foaming.
- bitumen Conventionally foaming of bitumen is carried out by flowing the hot liquid bitumen, which normally has a tempera ⁇ ture of 120 - 160 C, through a pipe, and permitting it to meet a water flow immediately before the pipe outlet, the instantane ⁇ ous evaporation of the water which then occurs causing foaming of the bitumen as it discharges from the pipe to be mixed with the road material to be coated.
- bitumen normally has a tempera ⁇ ture of 120 - 160 C
- amine is added to the bitumen to enhance its adhesion. Amines are unstable at the temperatures to which the bitumen is heated, and the amines therefore can not be added to the bitumen until immediately before discharging the bitumen, in order to avoid substantial deterioration of the adhesion effect. Also, from the same reason, only relatively limited amounts of bitumen at a time can be mixed with amines.
- the object of the invention is to provide a more effective method for foaming of bitumen than the conventional method, and an apparatus to carry out the new method.
- This object is achieved according to the invention by mixing water with hot liquid bitumen at a pressure which is higher than the saturation pressure of water vapor (steam) at the temperature of the bitumen, and then allowing the mixture to expand at a pressure which is lower than said saturation pressure.
- amines are added to ⁇ the water before the latter is mixed with the bitumen.
- the apparatus comprises a container for hot liquid bitumen and a container for water to be mixed with the liquid bitumen and a mixing device adapted to mix the bitumen and water at a pressure which is higher than the saturation pressure of water vapor at the temperature of the bitumen, ' metering pumps adapted to rise the pressure of the bitumen and water to the desired value, and a valve through which the bitumen/water mixture will expand under reduced pressure while developing water vapor.
- the drawing 1, 2 and 3 refer to containers or reser ⁇ voirs for bitumen, water and aminerespectively.
- the bitumen in reservoir 1 is heated to a temperature between 120 - 160 C and therefore is present in a relatively easy-flowing liquid state.
- Bitumen and water are pumped via metering pumps 4 and 5 respectively and non-return valves 6 and 7 respectively into a closed chamber of a mixing device 8 provided with stirring means, at a pressure which always is higher than the saturation pressure for water vapor at the above mentioned temperature of the bitumen.
- the amount of water added to the bitumen will normally be from 1 to 3 % by weight as is conventional, depen ⁇ ding on the desired degree of foaming.
- the water content may, if desired, of course be higher, favourable re ⁇ sults having been reached with a water content as high as 30 %.
- amine is added to the water before the water pump 5 via a metering pump 9.
- the mixture of bitumen, water and amine is lead to an adjustable valve 10, preferably a throttle valve, through which the mixture is allowed to expand at a pressure lower than the above defined saturation pressure, into an expansion chamber in the form of a hollow spraying beam 11 provided with a plurality of outlet nozzles 12.
- an adjustable valve 10 preferably a throttle valve, through which the mixture is allowed to expand at a pressure lower than the above defined saturation pressure, into an expansion chamber in the form of a hollow spraying beam 11 provided with a plurality of outlet nozzles 12.
- the water in the hot bitumen mixture will instantly start boiling and thus cause foaming of the bitumen when flowing into the expansion chamber and discharging through the nozzles 12.
- mixing device 8 any convenient conventional apparatus may be used.
- An apparatus which has been found particularly useful for this purpose is an ultrasonic ho ogenization or emulsification unit, e.g. of the type "Reson-Heat” as disclosed in US patent 4 302 112 and delievered in various standard capacities from Reson Systems ApS, Hiller ⁇ d, Denmark.
- the pressure in the mixing device 8 is adjusted by means of the valve 10 depending on the temperature of the bitumen, such that the pressure at any time is sufficiently high to prevent boiling of the water on the high pressure side of the
- valve 10 Normally a pressure of about 10 kp/cm will be used, corresponding to a water boiling point of about 180 C.
- the pressure on the low pressure side of the valve 10 2 will be 1 - 3 kp/cm above atmospheric pressure, sufficient to force the bitumen foam out through the nozzles 12 at a desired rate.
- the nozzles 12 may be ordinary spraying nozzles when the apparatus according to the invention has a modest capacity, for example up to 10 litre bitumen pr. minute, while for larger capacities they may advantageously be slit nozzles with adjustable nozzle apertures.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MC86NO8600074D MC1820A1 (en) | 1985-11-04 | 1986-11-03 | METHOD AND APPARATUS FOR FOAMING BITUMEN |
AT86906474T ATE46186T1 (en) | 1985-11-04 | 1986-11-03 | METHOD AND DEVICE FOR FOAMING BITUMEN. |
JP61505821A JPH0645786B2 (en) | 1985-11-04 | 1986-11-03 | How to generate bitumen |
DE8686906474T DE3665479D1 (en) | 1985-11-04 | 1986-11-03 | Method and apparatus for foaming of bitumen |
KR1019870700583A KR940004538B1 (en) | 1985-11-04 | 1986-11-03 | Method and apparatus for foaming of bitumen |
BR8606957A BR8606957A (en) | 1985-11-04 | 1986-11-03 | PROCESS AND APPARATUS FOR FORMING FOAM IN BETUME |
DK335687A DK172038B1 (en) | 1985-11-04 | 1987-06-30 | Process for foaming bitumen |
FI872911A FI92842C (en) | 1985-11-04 | 1987-07-01 | Method for foaming hot liquid bitumen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO854387 | 1985-11-04 | ||
NO854387A NO854387L (en) | 1985-11-04 | 1985-11-04 | PROCEDURE AND PLANT FOR FOAMING THE BITUM. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1987002694A1 true WO1987002694A1 (en) | 1987-05-07 |
Family
ID=19888564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1986/000074 WO1987002694A1 (en) | 1985-11-04 | 1986-11-03 | Method and apparatus for foaming of bitumen |
Country Status (26)
Country | Link |
---|---|
EP (1) | EP0247082B1 (en) |
JP (1) | JPH0645786B2 (en) |
KR (1) | KR940004538B1 (en) |
AR (1) | AR242819A1 (en) |
AT (1) | ATE46186T1 (en) |
AU (1) | AU581550B2 (en) |
BR (1) | BR8606957A (en) |
CA (1) | CA1279446C (en) |
CS (1) | CS257800B2 (en) |
DD (1) | DD250328A5 (en) |
DE (1) | DE3665479D1 (en) |
DK (1) | DK172038B1 (en) |
ES (1) | ES2003161A6 (en) |
FI (1) | FI92842C (en) |
GR (1) | GR862662B (en) |
HU (1) | HU206226B (en) |
IN (1) | IN171872B (en) |
IS (1) | IS1495B (en) |
MC (1) | MC1820A1 (en) |
MX (1) | MX168139B (en) |
NO (1) | NO854387L (en) |
NZ (1) | NZ218153A (en) |
OA (1) | OA08624A (en) |
PL (1) | PL149224B1 (en) |
WO (1) | WO1987002694A1 (en) |
YU (2) | YU44930B (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995022661A1 (en) * | 1994-02-18 | 1995-08-24 | Cmi Corporation | Method and equipment for producing foam bitumen |
US5827360A (en) * | 1996-10-09 | 1998-10-27 | Cmi Corporation | Method and equipment for producing foam bitumen |
WO2001062852A1 (en) * | 2000-02-25 | 2001-08-30 | Kolo Veidekke A.S | Process and system for production of a warm foam mix asphalt composition |
GB2389583A (en) * | 2002-03-20 | 2003-12-17 | Bruce Cook Road Planing Ltd | Resilient paving blocks |
EP1398351A1 (en) * | 2002-09-16 | 2004-03-17 | Shell Internationale Researchmaatschappij B.V. | Process for preparing foamed-asphalt aggregates |
WO2005052045A1 (en) * | 2003-11-25 | 2005-06-09 | Laboratoire Central Des Ponts Et Chaussees | Bitumen foam preparation method and installation |
NL1030039C2 (en) * | 2005-09-26 | 2007-03-27 | Konink Bam Groep Nv | Improved preparation of an asphalt mix and application thereof. |
CN102444073A (en) * | 2011-10-27 | 2012-05-09 | 武汉理工大学 | Asphalt foaming machine used for preparing foamed asphalt |
CN102587257A (en) * | 2012-03-11 | 2012-07-18 | 彭淑琴 | Foamed asphalt preparer and full automatic foamed asphalt preparation device |
US8454739B2 (en) | 2005-09-12 | 2013-06-04 | Alm Holding Co. | Bituminous paving composition and process for bituminous paving |
US8454740B2 (en) | 2005-09-12 | 2013-06-04 | Alm Holding Co. | Bituminous paving composition and process for bituminous paving |
US20130291761A1 (en) * | 2011-11-14 | 2013-11-07 | Andrew Tilman Cox | Portable bitumen foamer apparatus |
WO2014089712A1 (en) * | 2012-12-12 | 2014-06-19 | Ammann Schweiz Ag | Method and system for producing a binder foam for producing asphalt |
CN104233926A (en) * | 2014-09-05 | 2014-12-24 | 无锡雪桃集团有限公司 | Foam asphalt preparation system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102505609A (en) * | 2011-10-27 | 2012-06-20 | 武汉理工大学 | Asphalt foaming cavity for preparing foamed asphalt |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2101639A1 (en) * | 1970-01-20 | 1971-07-29 | Mobil Oil Corp | Process for the production of a foamed material |
AU433003B2 (en) * | 1971-01-15 | 1973-02-26 | Mobil Oil Corp. | Method and apparatus for producing foamed materials |
NO131920B (en) * | 1965-04-14 | 1975-05-20 | Saint Gobain | |
EP0122460A1 (en) * | 1983-03-23 | 1984-10-24 | Chuo Kagaku Co., Ltd. | Production of resin foam by aqueous medium |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59213738A (en) * | 1983-05-20 | 1984-12-03 | Chuo Kagaku Kk | Resin compound for expanding with water and production thereof |
-
1985
- 1985-11-04 NO NO854387A patent/NO854387L/en unknown
-
1986
- 1986-10-29 YU YU1836/86A patent/YU44930B/en unknown
- 1986-11-03 HU HU865250A patent/HU206226B/en not_active IP Right Cessation
- 1986-11-03 DD DD86295857A patent/DD250328A5/en not_active IP Right Cessation
- 1986-11-03 AU AU65919/86A patent/AU581550B2/en not_active Ceased
- 1986-11-03 CA CA000521988A patent/CA1279446C/en not_active Expired - Lifetime
- 1986-11-03 BR BR8606957A patent/BR8606957A/en not_active IP Right Cessation
- 1986-11-03 DE DE8686906474T patent/DE3665479D1/en not_active Expired
- 1986-11-03 WO PCT/NO1986/000074 patent/WO1987002694A1/en active IP Right Grant
- 1986-11-03 JP JP61505821A patent/JPH0645786B2/en not_active Expired - Lifetime
- 1986-11-03 AT AT86906474T patent/ATE46186T1/en active
- 1986-11-03 ES ES8602879A patent/ES2003161A6/en not_active Expired
- 1986-11-03 MC MC86NO8600074D patent/MC1820A1/en unknown
- 1986-11-03 KR KR1019870700583A patent/KR940004538B1/en not_active IP Right Cessation
- 1986-11-03 EP EP86906474A patent/EP0247082B1/en not_active Expired
- 1986-11-03 NZ NZ218153A patent/NZ218153A/en unknown
- 1986-11-04 PL PL1986262212A patent/PL149224B1/en unknown
- 1986-11-04 AR AR86305789A patent/AR242819A1/en active
- 1986-11-04 IS IS3158A patent/IS1495B/en unknown
- 1986-11-04 IN IN970/DEL/86A patent/IN171872B/en unknown
- 1986-11-04 CS CS867989A patent/CS257800B2/en not_active IP Right Cessation
- 1986-11-04 GR GR862662A patent/GR862662B/en unknown
- 1986-11-04 MX MX004254A patent/MX168139B/en unknown
-
1987
- 1987-06-30 DK DK335687A patent/DK172038B1/en not_active IP Right Cessation
- 1987-07-01 FI FI872911A patent/FI92842C/en not_active IP Right Cessation
- 1987-07-03 OA OA59152A patent/OA08624A/en unknown
- 1987-08-08 YU YU01457/87A patent/YU145787A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO131920B (en) * | 1965-04-14 | 1975-05-20 | Saint Gobain | |
DE2101639A1 (en) * | 1970-01-20 | 1971-07-29 | Mobil Oil Corp | Process for the production of a foamed material |
AU433003B2 (en) * | 1971-01-15 | 1973-02-26 | Mobil Oil Corp. | Method and apparatus for producing foamed materials |
EP0122460A1 (en) * | 1983-03-23 | 1984-10-24 | Chuo Kagaku Co., Ltd. | Production of resin foam by aqueous medium |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995022661A1 (en) * | 1994-02-18 | 1995-08-24 | Cmi Corporation | Method and equipment for producing foam bitumen |
US5788755A (en) * | 1994-02-18 | 1998-08-04 | Cmi Corporation | Method and equipment for producing foam bitumen |
US5827360A (en) * | 1996-10-09 | 1998-10-27 | Cmi Corporation | Method and equipment for producing foam bitumen |
WO2001062852A1 (en) * | 2000-02-25 | 2001-08-30 | Kolo Veidekke A.S | Process and system for production of a warm foam mix asphalt composition |
GB2389583A (en) * | 2002-03-20 | 2003-12-17 | Bruce Cook Road Planing Ltd | Resilient paving blocks |
GB2389583B (en) * | 2002-03-20 | 2006-07-12 | Bruce Cook Road Planing Ltd | A block and a method for making blocks |
EP1398351A1 (en) * | 2002-09-16 | 2004-03-17 | Shell Internationale Researchmaatschappij B.V. | Process for preparing foamed-asphalt aggregates |
WO2005052045A1 (en) * | 2003-11-25 | 2005-06-09 | Laboratoire Central Des Ponts Et Chaussees | Bitumen foam preparation method and installation |
US8454740B2 (en) | 2005-09-12 | 2013-06-04 | Alm Holding Co. | Bituminous paving composition and process for bituminous paving |
US8454739B2 (en) | 2005-09-12 | 2013-06-04 | Alm Holding Co. | Bituminous paving composition and process for bituminous paving |
US8454741B2 (en) | 2005-09-12 | 2013-06-04 | Alm Holding Co. | Bituminous paving composition and process for bituminous paving |
NL1030039C2 (en) * | 2005-09-26 | 2007-03-27 | Konink Bam Groep Nv | Improved preparation of an asphalt mix and application thereof. |
CN102444073A (en) * | 2011-10-27 | 2012-05-09 | 武汉理工大学 | Asphalt foaming machine used for preparing foamed asphalt |
US20130291761A1 (en) * | 2011-11-14 | 2013-11-07 | Andrew Tilman Cox | Portable bitumen foamer apparatus |
CN102587257A (en) * | 2012-03-11 | 2012-07-18 | 彭淑琴 | Foamed asphalt preparer and full automatic foamed asphalt preparation device |
CN102587257B (en) * | 2012-03-11 | 2016-08-03 | 彭淑琴 | A kind of foamed asphalt preparing device and full-automatic foam asphalt plant |
WO2014089712A1 (en) * | 2012-12-12 | 2014-06-19 | Ammann Schweiz Ag | Method and system for producing a binder foam for producing asphalt |
US10100167B2 (en) | 2012-12-12 | 2018-10-16 | Ammann Schweiz Ag | Method and system for producing a binder foam for producing asphalt |
CN104233926A (en) * | 2014-09-05 | 2014-12-24 | 无锡雪桃集团有限公司 | Foam asphalt preparation system |
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