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Preparation method of catalytic cracking regeneration flue gas sulfur transfer agent

A technology for sulfur transfer agent and flue gas regeneration, applied in catalytic cracking, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problems of the mechanical strength and reduction and regeneration ability of sulfur transfer agent, and achieve guaranteed performance, Improve the wear index and reduce the effect of poisoning

Inactive Publication Date: 2018-05-08
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the increase of magnesium content, the mechanical strength and reduction regeneration ability of the sulfur transfer agent decreased significantly.

Method used

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  • Preparation method of catalytic cracking regeneration flue gas sulfur transfer agent
  • Preparation method of catalytic cracking regeneration flue gas sulfur transfer agent
  • Preparation method of catalytic cracking regeneration flue gas sulfur transfer agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Beat 6.11 kg of dolomite powder, and adjust the pH of the slurry to 3 with hydrochloric acid.

[0039] (2) Add 3.08 kilograms of pseudo-boehmite to the slurry in (1)

[0040] (3) Add 4.29LMgCl successively to the slurry in (2) 2 solution, 2.00LFeCl 2 solution, 0.21 kg of MnO, stirred.

[0041] (4) Spray-dry the above slurry to obtain a sulfur transfer agent, which is designated as sample LJ-1.

Embodiment 2

[0043] (1) Beat 4.44 kg of dolomitic ore powder, and adjust the pH of the slurry to 2.5 with hydrochloric acid.

[0044] (2) Add 4.62 kilograms of pseudo-boehmite to the slurry in (1)

[0045] (3) Add 5.71LMgCl successively to the slurry in (2) 2 solution, 1.50LFeCl 2 solution, 0.42 kg of MnO, stirred.

[0046] (4) Spray-dry the above slurry to obtain a sulfur transfer agent, which is designated as sample LJ-2.

Embodiment 3

[0048] (1) Beat 6.67 kg of dolomite powder, and adjust the pH of the slurry to 3 with hydrochloric acid.

[0049] (2) Add 3.85 kilograms of pseudo-boehmite to the slurry in (1)

[0050] (3) Add 2.86LMgCl successively to the slurry in (2) 2 solution, 1.00L FeCl 2 solution, 0.11 kg of MnO, stirred.

[0051] (4) Spray-dry the above slurry to obtain a sulfur transfer agent, which is designated as sample LJ-3.

[0052] The analysis result of sulfur transfer agent in the example is as follows

[0053] The analysis result of table 1 sulfur transfer agent

[0054]

[0055] Catalyst Aging: The prepared catalyst was hydrothermally treated at 800° C. and 100% steam for 17 hours before being used.

[0056] Catalyst evaluation: The evaluation of catalyst was carried out on FFB fixed fluidized bed. The raw material oil is mixed raw material oil from a refinery. The properties of the raw material are shown in Table 2. The main agent is AIC-950, produced by Qingdao Huicheng Environme...

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Abstract

The invention discloses a preparation method of a catalytic cracking regeneration flue gas sulfur transfer agent. The preparation method comprises the following steps: (1) preparing slurry from beiyinite powder and performing acidizing; (2) adding a certain proportion of pseudo-boehmite into the slurry in the step (1); (3) sequentially adding a group IIA element, a group VIII element and a group VII element into the slurry in the step (2); and (4) carrying out spray-drying formation on the slurry to prepare the catalyst. According to the preparation method disclosed by the invention, magnesiumoxide in beiyinite can form magnesia-alumina spinel as an active component, calcium oxide can exert vanadium fixing performance, and the structure of the beiyinite is stable, so that the wear index of the sulfur transfer agent is increased; and poisonous vanadium is replaced with iron and manganese, so that poisons generated in the preparation and use processes are reduced.

Description

technical field [0001] The invention relates to a catalytic cracking auxiliary agent, in particular to a preparation method of catalytic cracking regenerated flue gas sulfur transfer agent. Background technique [0002] With the rapid development of industries in various countries, environmental pollution has become increasingly prominent, among which sulfur oxides are one of the main harmful gases of environmental pollution in the world today. For refining and chemical enterprises, a large amount of sulfur oxides will be produced during the regeneration of petroleum main catalysts, which will have a huge impact on the human body and its ecology. At present, the main methods to reduce SOx emissions from FCC regeneration flue gas are hydrodesulfurization, flue gas scrubbing and desulfurization, and the use of sulfur transfer agents. As an auxiliary agent, its addition is simple and convenient, economical and effective. [0003] According to reports, 5-15% of the sulfur in t...

Claims

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Application Information

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IPC IPC(8): B01J23/889C10G11/04C10G11/18
CPCC10G11/04C10G11/18B01J23/002B01J23/8892B01J2523/00B01J35/615B01J2523/31B01J2523/22B01J2523/23B01J2523/72B01J2523/842
Inventor 李凤郭卡莉高明军张晓佳叶红
Owner QINGDAO HUICHENG PETROCHEM TECH
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