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Single-stage inferior gasoline fraction hydrotreatment process method

A technology for hydrotreating and low-quality gasoline, which is applied in hydrotreating process, petroleum industry, and treating hydrocarbon oil, etc. It can solve problems such as coking of heat exchangers, achieve uniform temperature, avoid deposition of coking substances or deposits in reactors , the effect of solving the coking problem

Inactive Publication Date: 2012-07-04
冯刚
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  • Claims
  • Application Information

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Problems solved by technology

The feed of the first reactor of the method needs to be warmed up to the required temperature in the heat exchanger, although the first reactor inlet temperature is lower, the heat exchange tube wall temperature of t

Method used

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  • Single-stage inferior gasoline fraction hydrotreatment process method
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  • Single-stage inferior gasoline fraction hydrotreatment process method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with preferred embodiments. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention. The embodiment uses a laboratory small-scale constant temperature fixed-bed reactor, and the circulating oil is vacuum distillate after hydrofining.

[0028] Table 1 Properties of raw oil

[0029] Raw oil name

coker gasoline fraction

Density (20℃), g cm -3

0.7210

Distillation range, ℃

40～200

Sulfur content, wt%

0.79

Nitrogen content, wt%

0.02

Dienes, g-I 2 / 100g

4.8

Bromine value, gBr.100g -1

71.0

Aromatics, v%

9.8

[0030] Table 2 Properties of circulating oil

[0031] Cycle oil name

Hydrofined Vacuum Distillate Oil

Distillation range, ℃

390～550

...

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Abstract

The invention discloses a single-stage inferior gasoline fraction hydrotreatment process method, which comprises the following steps of: (1) directly mixing an inferior gasoline fraction raw material and recycle oil-recycle hydrogen heated by a heating furnace in a step (3), making the temperature of the mixture reach temperature required by the inlet of a hydrotreatment reactor, and introducing into the hydrotreatment reactor for desulfurization reaction, denitrification reaction and olefin saturation reaction; (2) introducing reaction effluent of the hydrotreatment reactor into a separation system, separating hot recycle oil from the reaction effluent without temperature reduction, and separating the hydrogenated gasoline fraction and gas phase through temperature reduction, wherein the gas phase is taken as recycle hydrogen; and (3) mixing the recycle hydrogen and the hot recycle oil in the step (2), heating in the heating furnace, recycling to the step (1), mixing with the inferior gasoline fraction raw material, and introducing into the hydrotreatment reactor. Compared with the prior art, the method can effectively solve the problem of coking of an inferior gasoline fraction hydrotreatment device.

Description

technical field [0001] The invention relates to a process method for hydrogenation treatment of low-quality gasoline fractions, in particular to a method for increasing the operating cycle of a single-stage low-quality gasoline fraction hydrogenation treatment device. Background technique [0002] As crude oil continues to become heavier and the depth of crude oil processing continues to increase, the processing of heavy oil products is increasingly important in the refining process. Due to the simple technology and low investment, the delayed coking process is becoming more and more important for refiners to process residual oil and improve An important means of light oil yield. The main liquid phase products of coker distillates in the delayed coking process include coker naphtha and coker diesel oil. Due to the high content of unsaturated hydrocarbons, sulfur, nitrogen and other impurities in coking distillate oil, and its poor stability, it is difficult to be used as th...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 冯刚
Owner 冯刚
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