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Selective hydrodesulfurization process method of poor-quality gasoline and device

A technology for hydrodesulfurization and inferior gasoline, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve problems such as low product yield, and achieve the effect of low hydrogen consumption and increased octane number

Active Publication Date: 2013-06-05
BEIJING HAISHUNDE TITANIUM CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the sulfur content of the product can be reduced to no more than 50μg / g, and the loss of the antiknock index (RON+MON) / 2 of the octane number is no more than 1.8, the product yield of 97.5m% is relatively low

Method used

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  • Selective hydrodesulfurization process method of poor-quality gasoline and device
  • Selective hydrodesulfurization process method of poor-quality gasoline and device
  • Selective hydrodesulfurization process method of poor-quality gasoline and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Selective hydrogenation catalyst HDDO-100 and selective hydrodesulfurization catalyst HDOS-200 were installed in a 200ml small-scale hydrogenation evaluation device with two hydrogenation reactors in series, and the raw material oil A was subjected to selective hydrodesulfurization treatment.

[0057] The selective hydrogenation reaction conditions for HDDO-100 catalyst are as follows:

[0058] Temperature = 135°C

[0059] Pressure = 2.2MPa

[0060] Liquid space velocity = 3h -1

[0061] Hydrogen oil volume ratio = 10v / v

[0062] The selective hydrodesulfurization reaction conditions for HDOS-200 catalyst are as follows:

[0063] Temperature = 250°C

[0064] Pressure = 2.0MPa

[0065] Liquid space velocity = 3h -1

[0066] Hydrogen oil volume ratio = 400v / v

[0067] The properties of the intermediate product in the hydrotreating process of feedstock oil A and the ultra-low sulfur product after hydrofining are listed in Table 1.

[0068] For raw material A with...

Embodiment 2

[0073] The selective hydrogenation catalyst HDDO-100, the selective hydrodesulfurization catalyst HDOS-200 and the hydrorefining catalyst HDMS-100 are installed in a 200ml small-scale hydrogenation evaluation device with three hydrogenation reactors in series, and the raw material oil B is selected. Hydrodesulfurization treatment.

[0074] The reaction conditions of the catalysts used for HDDO-100 and HDOS-200 were the same as in Example 1 except that the reaction temperature of the HDOS-200 catalyst was adjusted to 260°C.

[0075] The hydrorefining reaction conditions for HDMS-100 catalyst are as follows:

[0076] Temperature = 320°C

[0077] Pressure = 2.0MPa

[0078] Liquid space velocity = 3h -1

[0079] Hydrogen oil volume ratio = 400v / v

[0080] The properties of the intermediate product in the hydrotreating process of raw material oil B (FRCN) and the ultra-low sulfur product after hydrofining by the method of the present invention are listed in Table 2.

[0081] ...

Embodiment 3

[0087] Selective hydrogenation catalyst HDDO-100, selective hydrodesulfurization catalyst HDOS-200 and hydrorefining catalyst HDMS-100 were installed in a 200ml small-scale hydrogenation evaluation device with three hydrogenation reactors in series, and the raw material oil C was selected. Hydrodesulfurization treatment.

[0088] Except that the reaction temperatures of HDDO-100 and HDOS-200 catalysts were adjusted to 150°C and 280°C respectively, other reaction conditions were the same as in Example 2.

[0089] The properties of the intermediate product in the hydrotreating process of raw oil C and the ultra-low sulfur product after hydrofining are listed in Table 3.

[0090] The resulting gasoline product contained 10 μg / g of sulfur, of which mercaptan sulfur was 8 μg / g, and the loss of RON compared to feedstock C was 1.9 units.

[0091] Table 3 Example 3 results

[0092]

[0093]

[0094] * ΔRON = RON value of hydrogenation reaction product - RON value of raw oil C...

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Abstract

The invention relates to a selective hydrodesulfurization process method of poor-quality gasoline and a device. Hydroprocessing is carried out on catalytically cracked gasoline containing sulfur, olefin and sulfur alcohol. The method includes a selective hydrogenation process, a selective hydrodesulfurization process, an alternative hydrorefining process and an alternative recycle process. The method is used for the selective hydrodesulfurization of the catalytically cracked full-fraction gasoline to produce ultralow-sulfur clean gasoline, cut and fractionation processing for raw oil are needless, operation procedures are simplified, ultimately the ultralow-sulfur gasoline is obtained, sulfur alcohol content is low, octane loss is little, and product yields are high.

Description

technical field [0001] The invention relates to a method and device for selectively hydrotreating low-quality gasoline with high sulfur content and excessive mercaptan sulfur, especially a new combined process for selective desulfurization and sweetening of catalytic cracking gasoline (FCC gasoline for short) and devices. Background technique [0002] Currently, over 90% of the sulfur in gasoline comes from FCC gasoline. Therefore, reducing the sulfur and mercaptan content of FCC gasoline is the key to producing low-sulfur gasoline that meets today's and future gasoline specifications. [0003] Traditional hydrodesulfurization (HDS) process can effectively reduce the sulfur and mercaptan content in FCC gasoline. However, because the olefins are substantially hydrogenated and saturated while the gasoline is hydrodesulfurized, the octane number (RON value) of gasoline is lost by this method. [0004] In order to reduce the loss of octane number of desulfurized gasoline, man...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 彭成华付玉梅张宗辉杨峰熊震霖刘忠信李青燕
Owner BEIJING HAISHUNDE TITANIUM CATALYST
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