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Hydrogenation method and petrochemical process

A petrochemical and hydrogenation reaction technology, applied in the hydrogenation and petrochemical fields, can solve the problems of unrealistic separation and polymer blockage, and achieve the effect of prolonging the life of the catalyst

Active Publication Date: 2010-02-10
RESONAC CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case of directly supplying these substances to a high-temperature thermal cracking furnace, these substances undergo a thermal polymerization reaction, thus causing a problem that the thermal cracking furnace is easily clogged with the resulting polymer (coke)
Furthermore, since these mixtures consist of dozens of compounds, it is economically impractical to separate each component

Method used

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  • Hydrogenation method and petrochemical process
  • Hydrogenation method and petrochemical process
  • Hydrogenation method and petrochemical process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0179] Example 1 - hydrogenation reaction

[0180] Cracked kerosene sampled with an ethylene plant and containing the following components was fed to the hydrogenation reaction. The main properties of the supplied liquid are shown below.

[0181] Initial boiling point: 101.5°C, end point: 208.5°C (atmospheric pressure)

[0182] Density: 0.92g / L

[0183] Bromine value: 100g / 100g

[0184] Sulfur content: 120 ppm by weight

[0185] Composition of main components: vinyltoluene: 19.4% by weight, indene: 16.0% by weight, dicyclopentadiene: 7.0% by weight, trimethylbenzene: 5.5% by weight, styrene: 5.2% by weight, α-methylstyrene : 3.1% by weight, β-methylstyrene: 5.1% by weight, methylindene: 1.0% by weight, naphthalene: 2.7% by weight

[0186] The reaction condition that is used for (1) the first step hydrogenation reaction:

[0187] Hydrogen pressure: 5.0 MPa, reaction temperature: 90 to 110° C., raw material supply rate: 30 g / h, hydrogen flow rate: 72 NL / h, amount of cataly...

Embodiment 2

[0197] Example 2 - hydrogenation reaction

[0198] The reaction of Example 2 was carried out in the same manner as in Example 1. However, a mixture of cracked kerosene and the reaction product liquid of reaction (II) in a ratio of 1:4 (by weight) was used as the starting material for reaction (I). The reaction product liquid (condensed component) of reaction (I) is used as starting material for reaction (II). That is, reaction (I) and reaction (II) were carried out in the same manner as in Example 1, except that the feed rate of the raw material was 150 g / h (wherein the reaction product liquid of reaction (II) in Example 1 used as a diluent is 120g / h), and makes the space velocity 7.5 / h. In addition, the second-step reaction product liquid obtained in Example 1 was used as a diluent during the initial operation (operating time of 0 to 24 hours). The reaction product liquid produced in this Example 2 was used as a diluent thereafter.

[0199] The results obtained according ...

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Abstract

The present invention provides a hydrogenation method capable of converting cracked kerosene into the raw materials for petrochemical cracking having a high thermal decomposition yield by a hydrogenation reaction. The present invention is a petrochemical process for producing at least any of ethylene, propylene, butane, benzene or toluene by carrying out a thermal decomposition reaction at least using naphtha for the main raw material, wherein cracked kerosene produced from a thermal cracking furnace is hydrogenated using a Pd or Pt catalyst in a two-stage method consisting of a first stage (I), in which a hydrogenation reaction is carried out within the range of 50 to 1800C, and a second stage (II), in which a hydrogenation reaction is carried out within the range of 230 to 350 DEG C, followed by re-supplying all or a portion of these hydrogenated hydrocarbons to a thermal cracking furnace.

Description

technical field [0001] The present invention relates to a method for obtaining saturation by adding hydrogen atoms to aromatic carbon-carbon double bonds and ethylenic carbon-carbon double bonds in a mixture of hydrocarbon compounds having aromatic rings and / or vinylic carbon-carbon double bonds. Process for the hydrogenation of hydrocarbons (hydrogenation reactions) of mixtures of hydrocarbon compounds in the form of fractions having a boiling point of 90 to 230°C at 1 atmosphere (atm) (referred to as "cracked kerosene" or abbreviated "CKR") by using Naphtha or the like as the main raw material is produced by thermal cracking furnaces in petrochemical processes for the production of ethylene, propylene, butene, benzene or toluene and the like (typically referred to as ethylene production plants), And it also relates to a petrochemical process by which hydrogenated hydrocarbons for reuse to petrochemical processes are used as feedstock for thermal cracking furnaces. [0002] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/44C10G45/00C10G45/52C10G45/54C10G9/00C10G9/14C10G65/04C10G69/06
CPCC10G9/14C10G45/54C10G45/00C10G45/52C10G2400/30C10G2400/20C10G2300/202C10G2300/301C10G69/06C10G45/44C10G2300/4006C10G65/04C10G2300/1044C10G9/00C10G45/10C10G45/12
Inventor 葭村雄二鸟羽诚三木康朗畑中滋工藤哲雄中条哲夫
Owner RESONAC CORPORATION