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High-quality impregnant asphalt production process

A production process and impregnating agent technology, which is applied in the processing of tar pitch/petroleum pitch/natural pitch, tar pitch/petroleum pitch/natural pitch by distillation, petroleum industry, etc., which can solve the problem of low yield and ineffective It is difficult to remove asphalt impurities, difficult to control asphalt ash, etc.

Inactive Publication Date: 2013-08-14
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the production process currently used to produce high-quality impregnating agent pitch mostly adopts the solvent extraction method, but the high-quality coal tar pitch produced by it is of poor quality and the yield is not high.
This is mainly because it cannot effectively remove impurities in asphalt, making it difficult to control asphalt ash

Method used

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  • High-quality impregnant asphalt production process

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Effect test

Embodiment 1

[0020] Such as figure 1 Shown: the production process of high-quality impregnating agent asphalt, which is to mix the first solvent kerosene and the second solvent wash oil stored in the solvent tank 1 with the pipeline mixer 3 according to the mass ratio of 1:1.6 into the stirring tank 2, and the raw material coal tar pitch is sent into the stirring tank for stirring, and the mass ratio of the raw material coal tar pitch and the extraction solvent is 1:1.5, and is pumped into the first settling tank 4 through the first oil pump 13, and the first The heavy phase part in the settling tank is pumped into the quinoline insoluble matter centrifugal removal device through the second oil pump 14, and the quinoline insoluble matter centrifugal removal device includes a super centrifuge 7 and a slag hopper connected with the super centrifuge 8. The quinoline insoluble slag is removed by centrifugation with a super centrifuge, the removed quinoline insoluble slag is collected in the sl...

Embodiment 2

[0024] The production process of high-quality impregnating agent asphalt, which is to mix the first solvent kerosene and the second solvent washing oil stored in the solvent tank 1 with the mass ratio of 1:2 with the pipeline mixer 3 and then send them into the mixing tank 2. At the same time, send the raw coal tar pitch into the stirring tank for stirring. The mass ratio of the raw coal tar pitch and the extraction solvent is 1:2, and then pump it into the first settling tank 4 through the first oil pump 13, and put it into the first settling tank The heavy phase part is pumped into the quinoline insoluble matter centrifugal removal device through two oil pumps 14, and described quinoline insoluble matter centrifugal removal device comprises super centrifuge 7 and the slag hopper 8 that links to each other with super centrifuge, by super centrifuge The centrifuge centrifuges to remove the quinoline-insoluble slag, the removed quinoline-insoluble slag is collected in the slag h...

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Abstract

The invention discloses a high-quality impregnant asphalt production process. The high-quality impregnant asphalt production process is characterized by comprising the following steps of: mixing first solvent coal oil and second solvent washing oil for extraction by using a pipeline mixer, and then feeding the mixture into a stirring tank; feeding raw material coal asphalt into the stirring tank for stirring; pumping the stirred raw material coal asphalt into a first settling tank through an oil pump; pumping a heavy phase part in the first settling tank into a quinoline insoluble centrifugal removal device through the oil pump, and centrifugally removing quinoline insoluble residue; returning a material from which the quinoline insoluble residue is removed into the first settling tank; when the storage amount of mixed liquid in the first settling tank reaches the limit, enabling the mixed liquid to enter into a second settling tank, and standing; after lamination occurs in the second settling tank, heating a light phase component in the second settling tank through a first heating furnace, and pumping the light phase component into a first depressurizing distillation tower for depressurizing distillation; and removing a solvent, and thus obtaining a target product, namely high-quality impregnant asphalt. The high-quality impregnant asphalt production process is used for producing the high-quality impregnant asphalt. The product yield is high and can exceed 60 percent. The temperature of a softening point of a product is 70 to 90 DEG C. The ash content can be controlled to be 0.01 to 0.1 percent.

Description

technical field [0001] This patent relates to the field of deep processing of coal tar pitch products in the coal chemical industry, and specifically relates to a high-quality impregnating agent pitch production process. Background technique [0002] In the coal chemical industry, coal tar pitch products are mostly low-end products with low added value. The production of high-quality coal tar pitch products can increase the added value of coal tar pitch products several times. At present, the production process of high-quality impregnating asphalt mainly includes the following types: 1. Filtration separation method; 2. Centrifugal separation method; 3. Solvent extraction method. However, it is understood that the current filtration separation method and centrifugal separation method are immature for the production of high-quality coal tar pitch products, and the existing technical problems have not been resolved. Therefore the production technology that is used to produce h...

Claims

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Application Information

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IPC IPC(8): C10C3/08C10C3/06C10C3/00
Inventor 徐兵徐明万常红兵刘向勇钱红辉王建平曹素梅查海鑫刘翠霞吴术彬
Owner 武汉钢铁有限公司
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