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System for producing modified coal tar pitch and preparation method thereof

A technology for modified asphalt and production system, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt and the petroleum industry, etc. It can solve the problems of affecting the service life of equipment and heat transfer effect, increasing energy and power consumption, and long heating time of materials and other issues to achieve the effect of saving power consumption, reducing power and energy consumption, and stabilizing quality indicators

Active Publication Date: 2014-04-30
ANSHAN XINGDE ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of this process is that the quality of the produced oil is not ideal, and because of the batch process, the production capacity is limited; the whole process is completed in a reactor, and the heating time of the material is long. It is easy to cause coking in the reactor, which affects the service life of the equipment and the heat transfer effect, and greatly increases the energy and power consumption

Method used

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  • System for producing modified coal tar pitch and preparation method thereof
  • System for producing modified coal tar pitch and preparation method thereof
  • System for producing modified coal tar pitch and preparation method thereof

Examples

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preparation example Construction

[0062] The preparation method of a modified asphalt of the present invention is characterized in that: the medium temperature asphalt from the secondary evaporator of the tar processing device is sent to the modified intermediate asphalt processing equipment with a flash oil gas processing device through a pipeline, and the processed The flash oil and gas after flash evaporation in the vacuum flash evaporator is sent to the heavy oil treatment equipment for heavy oil fractionation, separation and condensation recycling, and the modified intermediate asphalt after flash evaporation is sent to the asphalt modification reaction equipment to produce modified asphalt. The specific steps as follows:

[0063] 1) Start the vacuum pump first, and vacuum the vacuum flasher 1 to keep the vacuum degree of the vacuum flasher 1 at -20Kpa~-5Kpa;

[0064] 2) The medium-temperature asphalt from the secondary evaporator with a temperature of 360°C to 370°C flows into the vacuum flash evaporator...

example 1

[0075] The preparation method of a modified asphalt of the present invention is characterized in that: the medium temperature asphalt from the secondary evaporator of the tar processing device is sent to the modified intermediate asphalt processing equipment with a flash oil gas processing device through a pipeline, and the processed The flash oil and gas after flash evaporation in the vacuum flash evaporator is sent to the heavy oil treatment equipment for heavy oil fractionation, separation and condensation recycling, and the modified intermediate asphalt after flash evaporation is sent to the asphalt modification reaction equipment to produce modified asphalt. The specific steps as follows:

[0076] Firstly, start the vacuum pump to evacuate the vacuum flash evaporator 1, so that the vacuum degree of the vacuum flash evaporator 1 is between -10 Kpa and -5 Kpa; the medium-temperature asphalt from the secondary evaporator with a temperature of 360°C and 370°C flows into the va...

example 2

[0079] A kind of preparation method of modified asphalt of the present invention is to send the medium temperature asphalt from the secondary evaporator of the tar processing device into the modified intermediate asphalt processing equipment with the flash oil gas processing device through the pipeline, and the After flashing, the flash oil and gas are sent to the heavy oil treatment equipment for heavy oil fractionation, separation and condensation recycling, and the modified intermediate bitumen after flashing is used as the modified intermediate bitumen on the one hand, and passed through the modified intermediate bitumen conveying pipe Send it to the asphalt modification reaction equipment to produce modified asphalt. On the other hand, as the final product of hard asphalt, it is directly sent to the hard asphalt forming device through the hard asphalt delivery pipeline. The specific steps are as follows:

[0080] First, start the vacuum pump to evacuate the vacuum flash ev...

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Abstract

The invention relates to a system for producing modified coal tar pitch and a preparation method of the modified coal tar pitch. The method comprises the following steps: feeding mid-temperature pitch from a revaporizer of a tar processing device into modified intermediate pitch processing equipment with a flash oil-gas treatment device through a pipeline, allowing the flash oil and gas generated by flashing through a vacuum flasher to enter heavy oil treatment equipment for performing separation and condensation recycling on heavy wash oil fraction, and feeding the modified intermediate pitch generated by flashing into pitch modification reaction equipment for producing modified coal tar pitch. According to the system and the method, various indexes of the modified coal tar pitch are obviously improved, the energy and power consumption is greatly reduced, and pollutant escape in the whole reaction process is avoided.

Description

technical field [0001] The invention relates to the technical field of modified asphalt production, in particular to a co-production system and preparation method of modified asphalt. Background technique [0002] Hard asphalt and modified asphalt are made from medium temperature asphalt after corresponding treatment. The production methods of modified asphalt using asphalt as raw material mainly include oxidative thermal polymerization, atmospheric pressure thermal polymerization, pressurized thermal polymerization, vacuum flash evaporation, etc. [0003] Oxidative thermal polymerization method is to put asphalt into a reactor with a heating device, and feed compressed air into the reactor to react. The main problem of this method is that it is difficult to balance the softening point of modified asphalt and the content of quinoline insolubles. relationship, it is difficult to produce qualified products. [0004] Atmospheric pressure thermal polymerization is a method com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00
Inventor 朱兴建沈鹏吴凤娥王永志王莹廉久会张蒿
Owner ANSHAN XINGDE ENG TECH
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