Method and equipment for producing foam bitumen

Details Method and equipment for producing foam bitumen Method and equipment for producing foam bitumen

1997-10-22

1998-10-27

Brunsman, David

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106277, 239142, 239403, 2394175, 239426, C09D19500, B05B 724

Patent

active

058273603

ABSTRACT:
The invention relates to a method and equipment for producing foam bitumen. Water is mixed to hot bitumen under a pressure which is lower than the prevailing absolute pressure, and after this the pressure is allowed to rise and the flow rate to drop. The mixing of water and bitumen occurs in a foaming reactor (17), which is connected via a pipeline (6, 8, 9, 10) to a spray bar (1), which also acts as a heat exchanger, and the changes in the flow caused by an inclination in the spray bar are compensated by means of pipes (6) and valves (7). The entire equipment is thermally insulated, and a part of it may be provided with electric heating to prevent the bitumen from solidifying. It is possible to circulate hot bitumen in the equipment by opening a valve (12), whereby the entire equipment is brought to an operating temperature.

REFERENCES:
patent: 2917395 (1959-12-01), Csanyi
patent: 4592507 (1986-06-01), Benedict
patent: 4692350 (1987-09-01), Clarke et al.
patent: 4832747 (1989-05-01), Marchal

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