Method for oxidizing asphaltum

An asphalt and oxidation tower technology, applied in the field of asphalt production or improvement of asphalt properties, can solve the problems of complex structure of asphalt oxidation tower, short operation period of oxidation tower, long time of asphalt oxidation, etc., to increase reaction surface area, uniform product properties, easy to use control effect

Inactive Publication Date: 2003-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problems to be solved by the method of the present invention are the problems of low air utilization rate, slow asphalt oxidation process, long time for asphalt oxidation, complex structure of asphalt oxidation tower, and short operation period of the oxidation tower in the prior art.

Method used

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Examples

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Embodiment 1

[0015] Use vacuum residue as raw material to produce high-viscosity road asphalt. The properties of the raw material are: the penetration at 25°C is 1701 / 10mm. The product quality and process conditions of the general bubbling oxidation tower and the process results of the present invention are listed in Table 1. The processing capacity of the device is 10m 3 / h, the gas-liquid mixer is SH-24 / 100 static mixer. The residual oil is heated to 240°C, enters the static mixer together with the air, and enters the oxidation tower after being fully mixed.

[0016] Table I

[0017] Process Type Bubbling Oxidation Tower Process of the present invention

[0018] Process conditions

[0019] Oxidation temperature, ℃ 240 240

[0020] Oxidation time, h 12 6

[0021] Oxidation air volume, M 3 M -3 h -1 40 50

[0022] product quality

[0023] Softening point, ℃ 51 50

[0024] Penetration at 25°C, 1 / 10mm 51 52

Embodiment 2

[0026] Use residue oil as raw material to produce building asphalt. The properties of the raw material are: softening point 45°C. The product quality and process conditions of the general bubbling oxidation tower and the process results of the present invention are listed in Table 2. Other conditions are identical with embodiment 1.

[0027] Table II

[0028] Process Type Bubbling Oxidation Tower Process of the present invention

[0029] Process conditions

[0030] Oxidation temperature, ℃ 287 280

[0031] Oxidation time, h 4 3

[0032] Oxidation air volume, M 3 M -3 h -1 80 60

[0033] Cycle volume ratio - 0.2

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PUM

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Abstract

A process for oxidizing asphalt includes such steps as dispersing air in the microbubbles mode in asphalt, loading in asphalt oxidizing tower, and oxidizing. Its advantages are high utilization rate of air, high speed, and simple structure of said oxidizing tower.

Description

1. Technical field [0001] The invention relates to a method for asphalt oxidation, which belongs to the technical field of asphalt oxidation treatment, in particular to a method for producing asphalt or improving the properties of asphalt by using air as an oxidizing agent. 2. Background technology [0002] The production of asphalt by oxidation method is to use residual oil, solvent deoiled asphalt or its blend with other soft components as raw materials, and continuously feed air at a certain temperature in a bubbling oxidation tower. The asphalt raw material stays in the oxidation tower for a certain period of time, and undergoes an oxidation reaction with the air to increase the content of asphaltene, improve its softening point, and reduce the penetration, so as to obtain qualified asphalt products. [0003] In the asphalt oxidation tower, air is blown in from the bottom of the tower and passes through the liquid asphalt raw material layer in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/04
Inventor 戴承远王仁辉冯敏哿刘树华
Owner CHINA PETROLEUM & CHEM CORP
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