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Production process of dipping agent bitumen

The technology of impregnating agent and asphalt is applied in the field of production technology of impregnating agent asphalt, which can solve the problems of high production cost, easy production of heavy-phase asphalt, complicated equipment structure, etc. Effect

Active Publication Date: 2008-10-22
山西宏特煤化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantages of the above method are that due to the failure to find the best process route and control method, the equipment structure is complicated, and the heavy phase pitch is easy to burn, so the production cost is high, the effect of removing quinoline insolubles is poor, and the index of impregnating agent pitch cannot be reached. , also failed to achieve continuous industrial production

Method used

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  • Production process of dipping agent bitumen
  • Production process of dipping agent bitumen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Main equipment in the present embodiment technique comprises:

[0075] Raw material tank φ2800mm×11514mm;

[0076] The extraction tower is designed as a vertical two-stage cylindrical empty tower with a large diameter at the top and a small diameter at the bottom. The upper tower is φ4500mm×h(20000)mm, the lower tower is φ1200mm×h(6500)mm, the height of the transition section is 1800mm, and the material is 16MnR;

[0077] There are 30 trays in the stripping tower, and the material of the tower internals is 316C.

[0078] Using medium temperature coal tar pitch as raw material, its specifications are:

[0079] Softening point, ℃: 80~90

[0080] Toluene soluble matter, %: 15~25

[0081] Ash content, %: ≯0.3

[0082] Volatile matter, %: 58~68

[0083] Quinoline solubles, %: ≯10

[0084] The aliphatic hydrocarbon solvent used is kerosene, and its specification is:

[0085] Density(20℃)g / cm 3 : ≮0.775

[0086] Distillation range:

[0087] 1BP, ℃ Measured

[0088] ...

Embodiment 2

[0111] Coal tar soft asphalt is used as raw material, and its specifications are:

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Abstract

The invention relates to a method for manufacturing impregnant bitumen. The method comprises the following steps: aliphatic hydrocarbon solvent and aromatic hydrocarbon solvent are selected to make mixed solvent; mid-temperature coal pitch or coal tar maltha and the mixed solvent are fed in at least three stages of mixers in a certain proportion, and then are fed in an extracting tower for separation after fully mixing; light phase bitumen and heavy phase bitumen with less quinoline insoluble content are extracted for separation inside the extracting tower; and the impregnant bitumen is obtained through the steam stripping of the light phase bitumen inside a stripping tower. The method makes use of equipment with simple structure, and bitumen blockage is not easy to occur; moreover, the method can realize continuous industrial production of high-quality impregnant bitumen, and reduces cost.

Description

technical field [0001] The invention relates to a production process of an impregnating agent asphalt, in particular to a process method for continuous industrial production of an impregnating agent through liquid-liquid extraction using medium-temperature coal tar pitch or coal tar soft asphalt raw materials. Background technique [0002] Impregnating agent pitch is one of the necessary raw materials for the carbon industry. Under a certain temperature and pressure, the liquid impregnating agent is forced to immerse into the pores of the porous material, so as to increase the bulk density of the porous material and reduce its permeability, and improve and improve the physical and chemical properties of the carbon product. Especially for carbon products that require high strength, high density, and low permeability, in order to reduce porosity, increase bulk density, mechanical strength, and reduce permeability, one or more impregnation operations with impregnating asphalt a...

Claims

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Application Information

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IPC IPC(8): C10C3/08C09K13/00
Inventor 吴连生李玉财辛文亮叶裕章
Owner 山西宏特煤化工有限公司
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