Modified asphalt production process for high QI and high TI tar raw materials, and apparatus thereof
A technology for modified asphalt and production process, which is applied in the direction of processing tar asphalt/petroleum asphalt/natural asphalt by distillation, which can solve the problems of low production qualification rate and high energy consumption of modified asphalt, save processing costs and reduce system energy. consumption, strong adaptability
Inactive Publication Date: 2019-02-01
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology
[0004] What the present invention aims to solve is the technical problem that when the QI and TI of tar raw materials are relatively high, the qualified rate of modified asphalt production is relatively low and the energy consumption is high
Method used
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Embodiment 1
[0027] Send raw material tar with a QI of 7-8% and a TI of 10-15% into a tar tube furnace, heat it to 385-395°C, and then enter a tar distillation tower for flash separation. Soft asphalt at 100°C, QI of 8-12%, and TI of 20-28%, the soft asphalt enters the stripper 1, and steam at 460-500°C is introduced into the stripper 1 through the superheated steam pipe 11 to carry out Distillation and separation, the water vapor input rate is 0.6t steam / t modified bitumen, the produced distilled oil is cooled by the cooler 2 at the top of the stripper 1, and then enters the anthracene oil system, and the temperature at the top of the stripper is 330 ~340°C, the produced asphalt passes through the asphalt production pipe 12 at the bottom of the stripping tower 1 to obtain a modified asphalt product with a QI of 11-14% and a TI of 28-34%, meeting YB / T5194-2015 Level 2 index.
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Abstract
The invention discloses a modified asphalt production process for high QI and high TI tar raw materials, and an apparatus thereof, and belongs to the technical field of coal tar processing. The invention provides a modified asphalt production process for high QI and high TI tar raw materials, wherein the modified asphalt production process comprises that tar is fed into a tar tubular furnace, andis subjected to heating polymerization, the polymerized material enters a tar distillation tower and is subjected to flash evaporation separation, the soft asphalt extracted from the tar distillationtower enters a steam stripping tower, and is subjected to distillation separation by introducing superheated steam, and the asphalt is extracted from the bottom of the steam stripping tower so as to obtain the modified asphalt. According to the present invention, the TI and the QI of the asphalt in the tar are directly adjusted by using the tubular heating furnace polymerization of the tar distillation system through the steam stripping tower process, and the asphalt is subjected to superheated steam blowing steaming through the steam stripping tower, such that the modified asphalt product meeting GB is directly produced so as to substantially reduce the energy consumption of the system and save the cost, and achieve the strong adaptability to high QI and high TI tar raw materials.
Description
technical field [0001] The invention belongs to the technical field of coal tar processing, and in particular relates to a process and a device for producing modified pitch with high QI and high TI tar raw materials. Background technique [0002] Modified asphalt is a high value-added product produced in the process of coal tar processing. It is widely used in electrolytic aluminum, carbon materials and other industries. The production process of modified asphalt in the domestic tar processing industry mainly adopts tube furnace or reactor technology. The processing flow is as follows: tar is heated in a tar tube furnace under normal pressure or reduced pressure, and separated in a tar distillation tower to produce medium-temperature asphalt (soft asphalt), anthracene oil, light oil, and phenol-naphthalene washing three-mixture and other media, the separated medium-temperature asphalt is heated and polymerized in a modified asphalt reactor or asphalt tube furnace to produce ...
Claims
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IPC IPC(8): C10C3/06
CPCC10C3/06
Inventor 龙云谭英军杨文迪
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM