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Hydroprocessing method of cracking C9

A technology of hydroprocessing and cracking carbon, which is applied in hydroprocessing process, hydrocarbon oil treatment, petroleum industry, etc., to achieve the effect of prolonging life

Inactive Publication Date: 2012-09-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the single-stage hydrogenation and two-stage hydrogenation treatment methods of cracked carbon nine in the prior art when dealing with cracked carbon nine with high unsaturated hydrocarbon and colloid content The colloid that exists easily blocks the pores of the catalyst and the shortcoming that sulfur and nitrogen in the cracked carbon nine cannot be effectively removed. The purpose of this invention is to provide a method for cracking carbon nine hydrotreating, comprising the following steps:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of the adsorbent:

[0034] Will Al 2 o 3 The carrier is impregnated with a solution containing NaOH, so that NaOH is loaded on Al 2 o 3 On the carrier, the obtained adsorbent precursor was dried at 100 °C to obtain an adsorbent with a NaOH content of 20%.

[0035] Hydroprocessing method of cracking carbon nine:

[0036] (1) Adsorption: The cracked C9 raw material and hydrogen were mixed at a temperature of 80 °C and a liquid hourly space velocity of 2 h -1 , pressure 5.5 MPa, hydrogen oil volume ratio of 400 under the adsorption conditions and contact with the adsorbent to obtain stream 1;

[0037] (2) One-stage hydrogenation: stream 1 and hydrogen, at a temperature of 80 °C and a liquid hourly space velocity of 2 h -1 , pressure 5.0 MPa, hydrogen oil volume ratio 400 reaction conditions with NiO / Al 2 o 3 Catalyst contacted stream 2;

[0038] (3) Two-stage hydrogenation: stream 2 and hydrogen, at a temperature of 280 °C and a liquid hourly space vel...

Embodiment 2

[0042] Preparation of the adsorbent:

[0043] Spray the solution containing KOH on the Al 2 o 3 On the carrier, KOH is supported on Al 2 o 3 On the carrier, the obtained adsorbent precursor was dried at 100 °C to obtain an adsorbent with a KOH content of 10%.

[0044] Hydroprocessing method of cracking carbon nine:

[0045] (1) Adsorption: Cracking C9 raw material and hydrogen at a temperature of 50 °C and a liquid hourly space velocity of 1 h -1 , pressure 6.0 MPa, hydrogen oil volume ratio of 100 under the adsorption conditions and contact with the adsorbent to obtain stream 1;

[0046] (2) One-stage hydrogenation: stream 1 and hydrogen, at a temperature of 50 °C and a liquid hourly space velocity of 1 h -1 , pressure 5.5 MPa, hydrogen oil volume ratio 100 and NiO / Al 2 o 3 Catalyst contacted stream 2;

[0047] (3) Two-stage hydrogenation: stream 2 and hydrogen, at a temperature of 200 °C and a liquid hourly space velocity of 1 h -1 , pressure 5.0 MPa, hydrogen oil ...

Embodiment 3

[0051] Preparation of the adsorbent:

[0052] Will Al 2 o 3 Carrier impregnated with Na 2 CO 3 solution to make Na 2 CO 3 Loaded on Al 2 o 3 On the carrier, the obtained adsorbent precursor was dried at 100 °C to obtain Na 2 CO 3 The content is 30% of the adsorbent.

[0053] Hydroprocessing method of cracking carbon nine:

[0054] (1) Adsorption: Cracking C9 raw material and hydrogen at a temperature of 100 °C and a liquid hourly space velocity of 5 h -1 , pressure 2.0 MPa, hydrogen oil volume ratio of 500 under the adsorption conditions and contact with the adsorbent to obtain stream 1;

[0055] (2) One-stage hydrogenation: stream 1 and hydrogen, at a temperature of 100 °C and a liquid hourly space velocity of 5 h -1 , pressure 1.5 MPa, hydrogen oil volume ratio 500 and NiO / Al 2 o 3 Catalyst contacted stream 2;

[0056] (3) Two-stage hydrogenation: stream 2 and hydrogen, at a temperature of 300 °C and a liquid hourly space velocity of 5 h -1 , pressure 1.0 MPa...

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Abstract

The invention discloses a hydroprocessing method of cracking C9, which is characterized by adopting a method combining adsorption and two-section hydrogenation, and comprising the steps of: firstly, leading the cracking C9 raw material to be contacted with hydrogen and adsorbent to obtain material flow 1; then, leading the material flow 1 and hydrogen to be contacted with NiO / Al2O3 catalyst to obtain material flow 2; then, leading the material 2 and hydrogen to be contacted with CoO-MoO3 / Al2O3 catalyst to obtain material flow 3; and finally, carrying out alkaline washing on the material flow 3 to obtain the cracking C9 product. The hydroprocessing method can effectively remove mechanical impurity and macromolecular colloid in the cracking C9 raw material, so that the service life of the downstream hydrogenation catalyst is greatly prolonged. Furthermore, after the optimal combination of absorption and two-section hydrogenation is adopted, the defect that pore channels of single-section hydrogenation catalyst and two-section hydrogenation catalyst are easily blocked by the colloid can be overcome; and meanwhile, the sulfur content and the nitrogen content of the cracking C9 can be remarkably reduced.

Description

technical field [0001] The invention relates to a method for cracking carbon nine hydrogenation treatment, in particular to a cracking carbon nine hydrogenation treatment method with high unsaturated hydrocarbon and colloid content. Background technique [0002] my country's ethylene cracking raw materials mainly include naphtha, diesel oil, gas oil, etc. No matter what kind of cracking raw materials are used to produce ethylene, a certain amount of C9 fraction will be produced by-product, and its output is 10-20% of the ethylene output. Due to the lack of relevant technologies, most domestic ethylene plants sell cracked C9 as a cheap primary raw material, and only a few plants use it as gasoline, diesel components or solvent oil after preliminary processing. [0003] Due to the differences in the cracking raw materials and cracking conditions of each ethylene plant, the composition of cracked carbon nine in each plant varies greatly. Cracked carbon nine is rich in unsatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
Inventor 许建文王继元堵文斌汪洋卞伯同陈韶辉柏基业庞焱朱庆奋
Owner CHINA PETROLEUM & CHEM CORP