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Multi-purpose reactor and process for the preparation of modified bitumen

A technology of modified asphalt and reactors, which is applied in the direction of chemical instruments and methods, mixing methods, chemical/physical/physicochemical fixed reactors, etc., can solve problems such as hazards, increase flexibility, reduce costs, and reduce costs. The effect of chemical accumulation

Inactive Publication Date: 2012-09-19
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, under the air discharge pipe of the hot bitumen storage container, air gaps can be created where volatile hydrocarbons can accumulate leading to a potentially hazardous situation

Method used

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  • Multi-purpose reactor and process for the preparation of modified bitumen
  • Multi-purpose reactor and process for the preparation of modified bitumen
  • Multi-purpose reactor and process for the preparation of modified bitumen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] figure 1 A reactor 1 with a horizontal outer shell comprising a cylindrical wall 2 and side walls 3 and 4 is shown. The side wall 3 has a bitumen inlet 5 through which the bitumen enters the housing. The cylindrical wall 2 has an inlet 6 for the introduction of an oxygen-containing gas such as air. Four inlets 6 are shown in the figure, but those skilled in the art will understand that the number of inlets can vary. The cylindrical wall 2 also has a bitumen product outlet 7 . The bitumen product outlet 7 may be located close to the side wall 4 to avoid the possibility of voids in the reactor 1 . In the axial direction, the reactor 1 has a high shear mixer comprising a rotating shaft 8 ; a series of rotors, preferably impellers 9 , and a stator 14 . In this embodiment each rotor series consists of two rotors, preferably in this embodiment each impeller series consists of two impellers. The shaft may be operated by means of a motor, such as an electric motor, prefera...

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PUM

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Abstract

A reactor is provided for the preparation of modified bitumen, which reactor comprises a horizontal housing comprising a cylindrical wall and two side walls, wherein a bitumen inlet has been provided at or near one of the side walls of the housing and a bitumen product outlet has been provided at or near the opposite side wall of the housing, wherein a plurality of inlets for the provision of oxygen-containing gas has been provided in the cylindrical wall of the housing between the bitumen inlet and the bitumen product outlet, which multi-purpose reactor is further provided with a mixer arranged inside the housing comprising at least one rotor rotating within at least one stator having a plurality of openings. Also there is provided a process for the preparation of modified bitumen, which comprises contacting bitumen at elevated temperature and pressure with a modifier in a reactor as herein described.

Description

technical field [0001] The present invention relates to a multipurpose reactor and method for preparing modified bitumen, such as blown bitumen (including catalytically blown bitumen) or polymer modified bitumen or high quality additive bitumen. Background technique [0002] Bitumen is a viscous, non-volatile product from crude oil. It usually consists of aromatic and / or long carbon chain hydrocarbons and derivatives. It is generally produced through a refining process after atmospheric or vacuum fractionation. To increase the softening point of bitumen or when producing bitumen with specific properties, blown bitumen can be produced by oxidizing bitumen with an oxygen-containing gas. Changing the properties of bitumen by blowing can be quite slow. Furthermore, the blowing process can be hazardous as volatile hydrocarbons can be released during the process and these hydrocarbons can accumulate in any air gaps in the asphalt blowing plant. [0003] One such device is desc...

Claims

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Application Information

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IPC IPC(8): C10C3/04B01F3/04B01F7/00B01F13/10B01J19/18
CPCB01F3/04588C10C3/04B01J8/222B01J19/0066B01J2208/00212B01J8/10B01J2219/00094B01J2219/182B01F7/00758B01J10/002B01J19/18B01F7/00633B01F15/00883B01F7/04B01F23/2332B01F27/271B01F27/191B01F27/70B01F35/531
Inventor R·布兰C·库马尔S·拉吉D·斯科特
Owner SHELL INT RES MAATSCHAPPIJ BV