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Method and device for controlling the quality of coking mixed oil

A technology for mixed oil and coking heavy oil, which is applied in tar processing, coking carbonaceous materials, and chemical processing of tar asphalt/petroleum asphalt/natural asphalt, etc. It can solve the problems of impurities and affecting the quality of coking mixed oil, and achieve The effect of using less

Active Publication Date: 2020-07-14
UNIV OF SCI & TECH LIAONING +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem in the prior art that impurities in high-temperature coking oil and gas affect the quality of coking mixed oil, and provide a method and device for controlling the quality of coking mixed oil in the production of coal-based needle coke

Method used

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  • Method and device for controlling the quality of coking mixed oil
  • Method and device for controlling the quality of coking mixed oil
  • Method and device for controlling the quality of coking mixed oil

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The control device for the quality of coking mixed oil in the production of coal series needle coke, such as figure 1 As shown, it consists of a coking tower 1, a swirl-type two-phase flow separation tower 2, a fractionation tower 3 and a heating furnace 4, and the gas outlet of the coking tower 1 is connected to the swirl-flow two-phase flow separation tower 2 through a pipeline , the gas outlet of the swirling two-phase flow separation tower 2 is connected with the fractionation tower 3 through a pipeline, and the bottom of the fractionation tower 3 is connected with the heating furnace 4 through a pipeline, and the heating furnace 4 is connected with the heating furnace 4 through a pipeline. The feed ports of the coking tower 1 are connected by pipelines.

Embodiment 2

[0030] The method for controlling the quality of coking mixed oil in the production of coal-based needle coke described in this example is as follows: figure 2 shown, including the following steps:

[0031] (1) When the production feed of the coking tower is delayed for 6 hours, the high-temperature coking oil gas at 435°C from the top of the coking tower enters the high-temperature swirling two-phase flow separation tower in a tangential direction, and the tangential introduction of the airflow causes rotational movement.

[0032] (2) Spray 223kg / h of coking heavy oil on the upper part of the high-temperature swirl-type two-phase flow separation tower to control the gas outlet temperature at the top of the swirl-type two-phase flow separation tower, and separate high polymers and micron-sized solid particles from oil and gas, The purified high-temperature coking oil gas is discharged from the top of the high-temperature swirling two-phase flow separation tower, and the heavy...

Embodiment 3

[0040] The method for controlling the quality of coking mixed oil in the production of coal-based needle coke described in this embodiment includes:

[0041] (1) When the production feed of the coking tower is delayed for 10 hours, the high-temperature coking oil gas at 439 °C from the top of the coking tower enters the high-temperature swirling two-phase flow separation tower along the tangential direction.

[0042](2) Spray 236kg / h of coking heavy oil on the upper part of the high-temperature swirl-type two-phase flow separation tower to control the gas outlet temperature at the top of the swirl-type two-phase flow separation tower, and to separate high polymers and micron-sized solid particles from oil and gas, The purified high-temperature coking oil gas is discharged from the top of the high-temperature swirling two-phase flow separation tower, and the heavy oil containing polymers and micron-sized solid particles is discharged from the tower and used as fuel oil. The puri...

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Abstract

The purpose of the present invention is to solve the problem in the prior art that impurities in high-temperature coking oil and gas affect the quality of coking mixed oil, and provide a method and device for controlling the quality of coking mixed oil, belonging to the technical field of coal-based needle coke preparation. The method is to pass the high-temperature coked oil gas from the top of the delayed coking tower into the cyclone two-phase flow separation tower in a tangential direction; spray heavy coking oil as a refrigerant into the separation tower to make the high polymer and micron-sized solid particles Separation from oil and gas; the purified high-temperature coking oil gas enters the fractionation tower, undergoes partial condensation and cooling to form coking heavy oil, and mixes with refined soft asphalt at the bottom of the fractionation tower to obtain coking mixed oil with stable performance. The invention adopts a swirl-type two-phase flow separation tower to improve the quality of coking mixed oil by regulating the composition of high-temperature coking oil and gas, so as to achieve the purpose of improving the performance of needle coke and stabilizing the quality of needle coke.

Description

technical field [0001] The invention belongs to the technical field of coal-based needle coke preparation, and in particular relates to a method and device for controlling the quality of coking mixed oil in the production of coal-based needle coke. Background technique [0002] In recent years, with the development of electric furnace steelmaking technology, the demand for high-power and ultra-high-power graphite electrodes has increased significantly. Needle coke has the advantages of low resistivity, small thermal expansion coefficient, strong impact resistance, high mechanical strength, good oxidation resistance, etc. It has become an ideal raw material for high-power and ultra-high-power graphite electrodes. According to different types of raw materials for producing needle coke, needle coke can be divided into oil-based needle coke and coal-based needle coke; coal-based needle coke is superior to oil-based needle coke in terms of thermal expansion coefficient and specif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B55/00C10C1/00C10C3/02C10C3/06
CPCC10B55/00C10C1/005C10C3/02C10C3/06
Inventor 赵雪飞程俊霞赖仕全高丽娟朱亚明王莹
Owner UNIV OF SCI & TECH LIAONING
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