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Improvement method of needle coke used refined aromatic hydrocarbon oil

A technology for needle coke and aromatic oil, which is applied in the treatment of hydrocarbon oil, hydrocarbon oil treatment products, coke ovens, etc. It can solve the problems of low impurity content, high aromatic content, low asphaltene content, etc., and achieve the effect of simple process

Inactive Publication Date: 2015-04-29
SHANDONG YIDA NEW MATERIAL
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AI Technical Summary

Problems solved by technology

[0002] As the raw material suitable for the production of needle coke - catalytic oil slurry, the required indicators are: low S, low N, medium density, high content of aromatics, low content of colloids, asphaltenes, and low content of impurities, while domestic refinery catalytic cracking units Most of the produced low-S, low-N oil slurry has low density and low aromatics content, which is not suitable for the production requirements of needle coke. It needs to be modified, that is, to increase its aromatics content and density, and it is oily needle-like The expansion of coke production scale provides the source of raw materials

Method used

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Embodiment 1

[0009] The low-sulfur and low-nitrogen catalytic oil slurry purchased from major refineries (the sulfur content is not more than 0.5%, the nitrogen content is not more than 0.5%) enters the oil slurry extraction device for extraction, and removes asphaltenes and catalyst particles to obtain rich Aromatic oil, the density is generally 0.98------1.03g / cm3, and the aromatic hydrocarbon content is 40---48%.

[0010] Enter the aromatic-rich oil buffer tank, pump out the aromatic-rich oil, heat it to 400-490°C through the oil furnace, and enter the polymerization tower. After the material is polymerized in the polymerization tower for 3-10 hours, the density of the aromatic-rich oil increases to 1---- --1.05 g / cm3, the aromatics content increased to 50----55%.

[0011] The material at the bottom of the polymerization tower enters the flash tower, and the oil gas at the bottom of the flash tower is cooled by the cooler and enters the gas-liquid separator 1. The refined aromatic oil...

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Abstract

The invention relates to an improvement method of needle coke used refined aromatic hydrocarbon oil. The improvement method of the needle coke used refined aromatic hydrocarbon oil comprises the following steps: taking oil rich in aromatic hydrocarbon, heating the oil to 400-490 DEG C by a heating furnace, introducing the oil into a polymerization tower, taking the material at the bottom of the polymerization tower and introducing the material into a flash tower, taking the flashed material at the bottom of the flash tower, cooling the material to the room temperature, introducing the material into a gas-liquid separator, controlling the vacuum degree in the gas-liquid separator to be 5-10kpa, taking the material at the bottom of the gas-liquid separator, and enabling the material to flow into a refined aromatic hydrocarbon oil buffering tank to prepare the raw material which is refined aromatic hydrocarbon oil for producing needle coke. The improvement method of the needle coke used refined aromatic hydrocarbon oil is simple in process; the oil rich in aromatic hydrocarbon with low content of aromatic hydrocarbon in domestic oil refining plant is processed, the content of the aromatic hydrocarbon is increased; the prepared refined aromatic hydrocarbon oil is applicable to production of the needle coke.

Description

technical field [0001] The invention relates to an improved method for refined aromatic oil for needle coke, which belongs to the technical field of petrochemical industry. technical background [0002] As the raw material suitable for the production of needle coke - catalytic oil slurry, the required indicators are: low S, low N, medium density, high content of aromatics, low content of colloids, asphaltenes, and low content of impurities, while domestic refinery catalytic cracking units Most of the produced low-S, low-N oil slurry has low density and low aromatics content, which is not suitable for the production requirements of needle coke. It needs to be modified, that is, to increase its aromatics content and density, and it is oily needle-like The expansion of coke production scale provides a source of raw materials. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an improved method for refin...

Claims

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Application Information

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IPC IPC(8): C10B57/04
CPCC10B57/045C10G57/02C10G2300/1096C10G2400/30
Inventor 刘涛
Owner SHANDONG YIDA NEW MATERIAL
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