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Method for preparing asphalt water slurry by granulation of petroleum series and coal series asphalt residue

A technology for asphalt residue and oil sand asphalt, which is applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, petroleum industry, tar processing, etc. Raw materials and other issues, to achieve the effect of convenient recovery, simplified recovery methods, and efficient recovery

Active Publication Date: 2008-04-23
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen from the description and flow chart of this patent that rapid phase change realizes asphalt dispersion and granulation in a gas atmosphere. The granulation conditions are mainly controlled by the properties of the raffinate asphalt phase and the operating conditions of the extraction tower. There is no independent adjustment means. The particle size is not easy to control, and even affects the process operation. According to this method, asphalt water slurry cannot be directly prepared
[0006] In addition, the above-mentioned method has certain restrictions on the range of granulated raw materials, solvents and optional operating conditions. For example, it is mainly aimed at heavy oil or bitumen with a higher softening point, and is not suitable for simple application to lower softening points (such as It is not involved in the treatment of the residual oil obtained from the deep thermal reaction, the tailings obtained from the suspension bed hydrogenation process, and the liquefaction residue of coal high-pressure hydrogenation

Method used

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  • Method for preparing asphalt water slurry by granulation of petroleum series and coal series asphalt residue
  • Method for preparing asphalt water slurry by granulation of petroleum series and coal series asphalt residue
  • Method for preparing asphalt water slurry by granulation of petroleum series and coal series asphalt residue

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Experimental program
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Effect test

Embodiment 1

[0049] The tailings of coal high-pressure hydrogenation liquefaction with a softening point of 150°C are used as raw materials, and benzene is used as a solvent to directly mix and granulate the raw materials at 300°C and 5.0 MPa. The flow rate of the liquefied residue is 1.0kg / h, and the quality of the solvent and raw materials is adjusted. The mixing ratio is 1:1, and the obtained coal liquefaction tailings (bituminous phase) are mixed with the enhanced dispersion solvent (benzene), and then enter the prilling tower. The ratio of the enhanced dispersion solvent to the liquefaction residue is 0.1:1. First pass into water, the water contains a dispersed emulsifier, and the emulsifier is composed of alkylphenol polyoxyethylene ether (R(C 6 h 5 )O(CH 2 CH 2 O) n H, R=C 9 h 19 , n=10): sodium lignosulfonate: NaHCO 3 =4:4:2 (mass ratio), its content in water is 0.3m%, the addition of water is 0.3kg / h, and the water temperature is 25°C. The temperature of the prilling tower ...

Embodiment 2

[0051] The tailings of coal high-pressure hydrogenation liquefaction with a softening point of 120°C are used as raw materials, the flow rate of the liquefied residue is 10kg / h, and toluene is used as a solvent, and the flow rate is 20kg / h. At 320°C, 6.0MPa is mixed with the raw material and enters the extraction and separation tower. The mass mixing ratio of the main solvent and the raw material is 2:1, 48.2m% of the oil is extracted and separated in the separation tower, and the raffinate residue is then mixed with the enhanced dispersion solvent (toluene) and then enters the water of the prilling tower for dispersing and granulating. The ratio of dispersion solvent and raffinate residue is 0.2: 1, and dispersion emulsifier is added in water, and emulsifier is composed of polyoxyethylene (20) sorbitan monolaurate (Tween-20, C 58 h 114 o 26): sodium petroleum sulfonate (molecular weight is 500): NaOH=5: 4: 1, its add-on in water is 0.5m%, the add-on of water is 1.7kg / h, wate...

Embodiment 3

[0054] The suspension bed hydrogenation tail oil of Liaohe heavy oil with residue reduction is used as raw material, n-hexane is used as solvent, and its critical temperature is 222.0°C. The oil is first separated through the extraction tower. The solvent ratio is 0.5:1, the temperature of the extraction tower is 190° C., and the pressure is 4.0 MPa, and 75% of the oil is extracted. The raffinate residue is then mixed with an intensified dispersion solvent (n-hexane), and enters the prilling tower. The ratio of the intensified dispersion solvent to the raffinate residue is 0.15:1. Add a dispersing emulsifier in the water, and the emulsifier is composed of polyoxyethylene (20) sorbitan monostearate (Tween-60, C 64 h 126 o 26 ): sodium petroleum sulfonate (molecular weight is 500): NaOH=5: 4: 1, and its addition is 0.75m% of raw material (above-mentioned raffinate residue). The amount of water added is 7.0kg / h, and the water temperature is 30°C. The temperature of the prilli...

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Abstract

The process of pelletizing, recovering and separating heavy oil, asphalt, asphalt dreg and coal dreg includes dispersing material in solvent, introducing into water for fast dispersing and palletizing to prepare granular asphalt slurry, gasifying and condensing solvent for separating from asphalt slurry, and settling to separate out solvent and water for reuse. The process has wide material selecting range, and the prepared asphalt slurry has adjustable particle size, low viscosity and easy pipeline conveyance, and may be applied for preparing synthetic gas and hydrogen and as fuel of power generating system. The present invention has wide application in deep processing of heavy oil, modifying petroleum and recovering tail oil from coal liquefying slag.

Description

technical field [0001] The invention relates to a deep processing of petroleum heavy oil and a coal liquefaction process and equipment thereof, in particular to a method for granulating heavy oil, asphalt and residue, and coal liquefaction tailings and separating them from solvents. Background technique [0002] In the process of oil exploitation and processing, discharge and transportation of heavy oil, asphalt and petroleum residues will be encountered, especially petroleum asphalt with high softening point (including asphalt obtained from various solvent deasphalting, residual oil obtained from deep thermal reaction and suspended oil) tailings obtained from hydrogenation process) and a large amount of liquefied residues produced in the coal liquefaction process. These materials have a high softening point and high viscosity, and it is difficult to separate and transport them from the solvent. High-temperature heating and transport require energy to provide heat, which may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00C10C3/00C01B3/24C10L1/00
Inventor 赵锁奇孙学文许志明张民徐春明王仁安
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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