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Hydrogenation purification method for siliceous distillate

A technology for hydrorefining and distillate oil, which can be used in hydrotreating process, petroleum industry, processing hydrocarbon oil, etc., and can solve the problems of environmental pollution and long process.

Active Publication Date: 2009-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is described that the material passes through an adsorbent bed containing alumina and silica, and absorbs and removes silicon compounds at a suitable temperature. This method has a long process flow, and caustic alkali is required for the regeneration of the desorbent, causing unnecessary environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The raw material used in the examples is Daqing coking gasoline, and Table 1 shows the main properties.

[0020] The hydrofining catalyst with silicon trapping function uses the commercial catalyst FHRS-1 produced by Fushun Petrochemical Research Institute; the conventional hydrogenation catalyst uses the commercial hydrofinishing catalyst FH-98 produced by Wenzhou Huahua Group Co., Ltd. developed by Fushun Petrochemical Research Institute. The properties are shown in Table 2.

[0021]Table 1 Properties of Daqing Coking Gasoline

[0022] Raw oil

Daqing Coking Gasoline

Density (20), g / cm 3

0.7307

Distillation range, ℃

Initial boiling point to final boiling point

52～192

Alkaline nitrogen, μg / g

96

Nitrogen, μg / g

120

Sulfur, μg / g

1050

Silicon, μg / g

3.5

Bromine value, gBr / 100g

68.0

Alkenes, v%

49.6

[0023] Table 2 catalyst properties

[00...

Embodiment 2

[0032] The hydrorefining catalyst with the function of trapping silicon adopts the carrier prepared in Example 1 of CN93107376.6, adopts the impregnation solution containing Mo and Ni to support the active metal, and then dries and roasts at 400°C for 2 hours to obtain the final catalyst RS. Active metal content is MoO 3 10%, NiO 2%, catalyst pore volume 0.6ml / g, specific surface area 320m 2 / g, the catalyst is used as a hydrorefining catalyst with silicon trapping function. The conventional hydrofinishing catalyst is the hydrofinishing catalyst SC-3 prepared in Example 5 of CN00122922.2, and its metal content (calculated by oxide weight) is 28%.

[0033] Using the raw materials described in Table 1, RS and SC-3 were loaded into two series reactors at a volume ratio of 1:1. The operating conditions are shown in Table 5, and the reaction results are shown in Table 6.

[0034] Table 5 embodiment 2 operating conditions

[0035] Process conditions

RS bed

SC-3 b...

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PUM

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Abstract

The invention relates to a silicon-containing distillate oil hydrofining method, which adopts the method that the silicon-containing distillate oil raw material and hydrogen pass through at least two hydrofining catalyst beds under the hydrofining condition, the silicon-containing distillate oil raw material first passes through a hydrogenising catalyst bed with the silicon catching function, and then passes through a conventional hydrofining catalyst bed; wherein the hydrogenising catalyst with the silicon catching function has a greater pore volume and a specific surface area and a relatively lower metal content. Compared with the prior art, the method has the advantages that the process is simple, the good hydrodesulfurization and hydrodedenitrification performance is kept on the premise of enhancing the silicon-containing ability, and the running period of the device is effectively prolonged. The method can be applied to various silicon-containing distillate oil hydrofining processes.

Description

technical field [0001] The invention relates to a method for hydrofining silicon-containing distillate oil, in particular to a method for hydrofining silicon-containing distillate oil obtained through coking and other processes. Background technique [0002] In recent years, as crude oil has become heavier and the depth of crude oil processing has been continuously improved, the processing of heavy oil products has become increasingly important in the refining process. The delayed coking process has become more and more popular in refineries for processing residual oil due to its simple technology and low investment. , An important means to increase the yield of light oil. 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 the feeds...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 李扬郭蓉刘继华周勇姚运海王震
Owner CHINA PETROLEUM & CHEM CORP
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