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Hydrofining process of straight-run naphtha

A hydrorefining and naphtha technology, which is applied in hydrotreating process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of catalyst deactivation, high sulfur content, limited desulfurization capacity, etc.

Inactive Publication Date: 2016-12-14
锡山区绿春塑料制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing straight-run naphtha hydrorefining process is aimed at low-sulfur products. When dealing with straight-run naphtha produced by high-sulfur crude oil represented by Venezuelan crude oil, the sulfur content is too high, resulting in limited desulfurization capacity, and Catalyst deactivation fast

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The catalyst was prepared by impregnation method, and the carrier was a mixture of MSU-G, SBA-15 and HMS, and the mixing ratio was 1:1.1:0.5. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0036] The catalyst is loaded into a fixed-bed reactor, the reaction tube of the reactor is made of stainless steel with an inner diameter of 50mm, the catalyst bed is set to 3 layers, the temperature of the catalyst bed is measured with a UGU808 temperature control meter, and the raw material is directly distilled The naphtha was continuously transported by a double-plunger micropump manufactured by Beijing Satellite Manufacturing Plant. The hydrogen was supplied by a high-pressure cylinder and the flow rate was controlled by a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The catalyst loading was 2kg...

Embodiment 2

[0041] The catalyst is prepared by the impregnation method, and the carrier is a mixture of MSU-G / SBA-15 complex, MSU-G / HMS and SBA-15 / HMS complex, wherein the ratio of MSU-G, SBA-15 and HMS is the same as in the example 1 is the same. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and the molar ratio is 1:0.6:0.45):1.2.

[0042] All the other conditions are the same as in Example 1.

[0043] The final product was tested and the total sulfur content was reduced to 0.1 ppm.

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Abstract

The invention discloses a hydrofining process of straight-run naphtha. The process is carried out with a fixed bed reactor filled with a hydrogenation desulfurization and denitrification catalyst that includes a carrier and an active component, wherein the carrier is a composite or a mixture of MSU-G, SBA-15 and HMS; and the active component is a mixture including Mo2N, W2N, Mo2C and WC. Reaction conditions of the fixed bed reactor are described as follows: reaction temperature is 250-300 DEG C, partial pressure of hydrogen is 1.5-2.0 MPa, hydrogen-oil volume ratio is 80-150 and volume space velocity is 9-14 / h. The process can control the total sulfur content of the straight-run naphtha to be lower than 0.5 ppm.

Description

technical field [0001] The invention relates to a straight-run naphtha hydrodesulfurization and refining process, in particular to a straight-run naphtha hydro-refining process using a specific catalyst. Background technique [0002] Naphtha (chemical light oil) is a major raw material in both refining and petrochemical industries. Naphtha is a petroleum fraction obtained from the primary or secondary processing of a refinery with a dry point of less than 200-250 ° C. It is generally derived from straight-run naphtha from atmospheric and vacuum distillation in refineries and catalytic cracking and hydrocracking in refineries 1. Secondary processing of naphtha in the coking unit, and some condensate oil is also a naphtha fraction. It should be pointed out here that because domestic crude oil is generally heavy, and its straight run naphtha fraction content is very low, so it is a very important issue to make good use of secondary processed naphtha as a petrochemical raw mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08C10G67/14B01J29/00
CPCC10G45/08B01J29/005B01J29/0358B01J29/045C10G67/14C10G2300/202C10G2300/70
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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