A method for processing and utilizing cracked C9 distillate oil

A distillate oil and petroleum cracking technology, which is applied in the fields of hydrocarbon oil cracking, petroleum industry, chemical instruments and methods, etc., can solve the problems of easy deactivation of catalysts and difficult treatment, and achieves alleviation of coking, low concentration, and delayed deactivation. effect of speed

Active Publication Date: 2019-04-05
BEIJING SIXINTONG SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In view of this, the object of the present invention is to provide a method for processing and utilizing cracked C9 distillate oil, so as to solve the problems in the prior art that the cracked C9 distillate oil is difficult to handle and the catalyst is easily deactivated.

Method used

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  • A method for processing and utilizing cracked C9 distillate oil
  • A method for processing and utilizing cracked C9 distillate oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0041] The raw oil is the same as that of Comparative Example 1, and its properties are shown in Table 1.

[0042] The catalyst used in the reaction is obtained as follows: the aqueous solution of nickel nitrate, cobalt nitrate and molybdenum nitrate pentahydrate is mixed and heated at 45°C to prepare a stable co-immersion solution. The co-impregnation solution is impregnated on the alumina support in a saturated impregnation manner. Then drying at 120°C for 6 hours and calcining at 560°C for 4 hours to prepare a Ni-Mo-Co ternary supported hydrofining catalyst. The amount of metal active components on the catalyst is regulated by the amount of each metal component in the impregnation solution. The physical and chemical properties of the catalysts prepared by calcination are shown in Table 3.

Embodiment 1

[0043] The process conditions adopted in Examples 1 and 2 are shown in Table 4. As can be seen from Table 4, two groups of process condition tests were carried out for the hydrogenation reaction, which are respectively Example 1 and Example 2. The operating pressure in the two examples is the same, which is 4.0 MPa. In embodiment 1, the volumetric space velocity of raw material oil is 0.5h -1 , the liquid circulation ratio (volume ratio) is 1:5.0, the hydrogen-oil ratio at the reactor inlet is 160v / v, and when the reactor inlet temperature is 190°C, the catalyst bed temperature reaches 271°C.

Embodiment 2

[0044] Compared with Example 1, Example 2 increases the liquid circulation rate, the circulation ratio is 1:10.0, and the hydrogen flow rate is the same as that of Example 1, so the hydrogen-to-oil ratio drops to 80, and the reactor inlet temperature is correspondingly increased to 205°C, and the catalyst The bed temperature was 267°C.

[0045] The product property that embodiment obtains is shown in Table 5. As can be seen from Table 5, using the technology of the present invention, under the single-stage hydrogenation process flow, the cracked C9 distillate raw material has been well hydrotreated, the sulfur content of the liquid product2 / 100g, a qualified blended gasoline component has been obtained.

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Abstract

The invention discloses a processing and utilizing method of cracked C9 distillate oil. The method comprises the following steps: putting the cracked C9 distillate oil, cycle oil and hydrogen into a boiling-bed reactor together from the bottom part, wherein the boiling-bed reactor is filled with a hydrofining catalyst and is at a certain operating pressure; using the oil and the hydrogen entering the reactor to drive catalyst particles in the reactor to be fluidized, enabling a catalyst bed layer to be at a boiling state, and conducting a hydrogenation reaction at the same time; regulating the hydrogen flow and the operating pressure of the reactor in the reaction to ensure that at least part of the oil entering the reactor is at a liquid phase state; enabling a reaction product to flow out of an outlet in the top part of the reactor and enter a gas liquid separator to be separated, and enabling at least part of a liquid product in the separated gas and liquid products as the cycle oil to return to the reactor. The reactions like hydrodesulfurization and olefins hydrogenation saturation of the cracked C9 distillate are completed only through a single-stage process, a qualified hydrogenation product is obtained, and the service life of the hydrofining catalyst is prolonged.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, in particular to a method for processing and utilizing C9 fraction oil produced by petroleum cracking to produce ethylene Background technique [0002] The cracked C9 fraction is the remaining fraction after the C5-C8 fraction is cut off when the petroleum is cracked to prepare gasoline. At present, it is not fully utilized in our country, and the waste is quite serious. As a by-product of the ethylene industry, C9 cracking fractions will increase more and more with the rapid development of the ethylene industry. How to utilize this part of resources has attracted more and more attention. [0003] At present, the utilization of this part of resources at home and abroad mainly includes: ①separation and preparation of fine chemical products such as trimethylbenzene, mesitylene, and mesitylene; ②polymerization to produce C9 petroleum resin; ③hydrogenation into gasoline blending components or ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/12B01J23/883
CPCB01J23/883B01J2523/00C10G47/12C10G2300/202C10G2300/70C10G2400/02B01J2523/845B01J2523/847B01J2523/68
Inventor 石玉林董建伟蒋东红郭贵贵陈水银
Owner BEIJING SIXINTONG SCI & TECH
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