Electric field purifying process of coal-tar oil

A coal tar, electric field technology, used in tar processing, petroleum industry, through electro/magnetic refining, etc., to achieve the effect of preventing catalyst poisoning, high purification rate, and prolonging operation period

Active Publication Date: 2007-07-18
SHENMUFUYOU ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned coal tar purification treatment method, and provide an electric field purification method for coal tar with simple process, low production and operation costs and high purification rate

Method used

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  • Electric field purifying process of coal-tar oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The coal tar 1 of the present embodiment is low-temperature coal tar, and taking purification of low-temperature coal tar 10kg as an example, its process steps are as follows:

[0030] 1. Preparation of mixed oil

[0031] Inject 7.5ppm of GQ-P5401 demulsifier 4 and 30ppm of QC01·061 demetallizer 5 into 10kg of low-temperature coal tar in the pipeline to make a mixed oil, enter the heater 6 through the pipeline, and heat it to 130°C.

[0032] 2. First-level electrolysis

[0033] The heated mixed oil enters the first-stage mixer 7, the pressure drop before and after the first-stage mixer 7, that is, the mixing intensity is 60KPa, and enters the first-stage electric detachment tank 8 through the first-stage mixer 7, and the first-stage electric detachment tank 8 exchanges The strong electric field intensity of the electric field is 800V / cm, the action time of the strong electric field is 4min, and the electric stripping temperature is 120°C. The primary electric stripping...

Embodiment 2

[0043] The coal tar 1 of the present embodiment is medium-temperature coal tar, and taking the purification of 10kg of medium-temperature coal tar as an example, its process steps are as follows:

[0044] 1. Preparation of mixed oil

[0045] Mix medium-temperature coal tar and hydrogenated oil at a weight ratio of 1:0.12 with a mixing pump 3. Hydrogenated oil is an example of diluent oil 2. Inject 8ppm into 10 medium-temperature coal tar in the pipeline. The model is GQ-P5401 Demulsifier 4 and 35ppm demetallizer 5 of model QC01·061 are made into mixed oil, which enters heater 6 through pipeline and is heated to 140°C.

[0046] 2. First-level electrolysis

[0047] The heated mixed oil enters the first-stage mixer 7, the pressure drop before and after the first-stage mixer 7, that is, the mixing intensity is 65KPa, and enters the first-stage electric detachment tank 8 through the first-stage mixer 7, and the first-stage electric detachment tank 8 exchanges The strong electric ...

Embodiment 3

[0056] The coal tar 1 of the present embodiment is high-temperature coal tar, and taking purification high-temperature coal tar 10kg as example, its process steps are as follows:

[0057] 1. Preparation of mixed oil

[0058] Mix high-temperature tar and hydrogenated oil in a weight ratio of 1:0.15 with a mixing pump 3 in the pipeline, and inject 6ppm of demulsifier 4 of model GQ-P5401 and 26ppm of demulsifier 4 of model QC01·061 into 10kg of high-temperature coal tar in the pipeline The demetallizing agent 5 is made into mixed oil, which enters the heater 6 through the pipeline and is heated to 150°C.

[0059] 2. First-level electrolysis

[0060] The heated mixed oil enters the first-stage mixer 7, the pressure drop before and after the first-stage mixer 7, that is, the mixing intensity is 70KPa, and enters the first-stage electric detachment tank 8 through the first-stage mixer 7, and the first-stage electric detachment tank 8 exchanges The strong electric field strength of...

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Abstract

The electric field coal tar purifying process includes the technological steps of preparing mixed oil, the first stage of electric purifying, the second stage of electric purifying, the third stage of electric purifying, draining waste water, etc. The experiments show that the coal tar purifying process of the present invention is superior to available coal tar purifying process, and has the advantages of simple technological process, low running cost, high purifying rate, etc. The present invention can reach coal tar purifying rate over 95 %, and the purified coal tar may be used in producing gasoline and diesel oil through hydromodification with no corrosion to the production apparatus, no catalyst poisoning, no blocking of the reactor bed layer and long production apparatus running period.

Description

technical field [0001] The invention belongs to the technical field of coal tar hydrogenation and upgrading to produce fuel oil, and specifically relates to the use of an electric field purification method to remove moisture, solid impurities and metals contained in coal tar. Background technique [0002] In recent years, with the rapid development of my country's national economy, the shortage of oil resources has become one of the key factors restricting my country's economic development. Coal tar is an organic mixture composed of alkanes, aromatic hydrocarbons, colloids and asphaltenes. Coal tar is used to replace petroleum. Under high temperature and high pressure conditions, the technology of producing gasoline and diesel through hydrogenation modification has developed rapidly. Coal tar is an important by-product of coking industry, coal chemical industry and coal gasification and other industries. With the increasing growth of my country's iron and steel, chemical an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C1/00C10G32/02
Inventor 杨占彪王树宽
Owner SHENMUFUYOU ENERGY TECH
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