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Method and system for treating ethylene tar

A kind of technology of ethylene tar and treatment method, which is applied in the direction of treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., and can solve the problems of shortening the operation period and so on

Active Publication Date: 2019-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some refineries try to use the heavy component of ethylene tar as the delayed coking raw material, that is, the ethylene tar is sent to the delayed coking tower for reaction after heat exchange at the bottom of the fractionating tower and heating in the heating furnace. shorten

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  • Method and system for treating ethylene tar
  • Method and system for treating ethylene tar

Examples

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Embodiment 1

[0057] Example 1 Using the treatment system and treatment method of the present invention, ethylene tar is contacted with the delayed coking reaction effluent in a pretreatment reactor to separate light components and heavy components. The light component enters the hydrogenation reaction system for hydrogenation reaction. According to the flow direction of the material, the hydrogenation reactor is filled with FZC-102B, FZC-103, FF-26 and FF-46 catalysts produced by Fushun Petrochemical Research Institute in sequence. After the product is separated, gas, gasoline fraction, diesel fraction and heavy oil fraction are obtained; the heavy fraction and heavy oil fraction are mixed and sent to the delayed coking reaction system, and AlCl is injected into the pipeline before entering the tower 3 The aqueous, coking reaction effluent enters the pretreatment reactor. The specific operating process conditions are listed in Table 2, and the liquid product distribution is listed in Table...

Embodiment 2

[0060] Example 2 Using the treatment system and method of the present invention, ethylene tar is contacted with the delayed coking reaction effluent in a pretreatment reactor to separate light components and heavy components. The light component enters the hydrogenation reaction system, and passes through FZC-102B, FZC-103, FF-26 and FF-46 catalysts in sequence in the hydrogenation reactor, and the reaction products are separated to obtain gas, gasoline fraction, diesel fraction and heavy oil fraction; recombination The fraction and the hydrogenated heavy oil fraction are mixed and sent to the delayed coking reaction system, and AlCl is injected into the pipeline before entering the tower 3 The aqueous, coking reaction effluent enters the pretreatment reactor. The specific operating process conditions are listed in Table 2, and the liquid product distribution is listed in Table 3. After the device was running for 600 hours, the reaction was stopped, and the FF-26 catalyst in ...

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Abstract

The invention discloses a method and a system for treating ethylene tar. According to the method, preheated ethylene tar contacts a coking reaction effluent from a delayed coking reaction system in apretreatment reactor, and a light component and a heavy component are obtained after separation; the obtained heavy component enters the delayed coking reaction system, and the generated coking reaction effluent enters the pretreatment reactor; and the light component and hydrogen enter a hydrogenation reaction system, and the reaction effluent is separated to obtain gas, gasoline distillate, diesel oil distillate and heavy oil distillate. The treatment system comprises the pretreatment reactor, the coking reaction system, and the hydrogenation reaction system. With the method and the system of the present invention, the stable long-cycle operation of the whole treatment system can be ensured, and the yield of the light oil product is high.

Description

technical field [0001] The invention relates to a processing method for inferior oil products, in particular to a processing method and system for ethylene tar. Background technique [0002] Ethylene tar is a by-product produced during steam cracking of raw materials such as naphtha to produce ethylene. It is a high-temperature polymer of raw materials and their products. It is mainly composed of condensed ring aromatics and aromatic olefins without side chains or with short side chains. , and its yield is about 15% of that of ethylene. The 10% distillation temperature of ethylene tar is about 200°C, the 90% distillation temperature is higher than 600°C, and the distillation range distribution is wide. The aromatic content of ethylene tar is as high as 90wt%, the Kangxi residual carbon is generally greater than 10wt%, and the density at 20°C is greater than 1.0g / cm 3 , Sulfur, nitrogen, metal and other impurities are low, and the ash content is also very small. Ethylene t...

Claims

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Application Information

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IPC IPC(8): C10G69/02
Inventor 郭丹勾连忠初人庆矫德卫宋永一刘继华
Owner CHINA PETROLEUM & CHEM CORP
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