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Solid desulfurizing agent and preparation method thereof

A desulfurizer and solid technology, applied in the field of solid desulfurizer and its preparation, can solve the problems of low breakthrough sulfur capacity, low selectivity, low desulfurization rate, etc., achieve high breakthrough sulfur capacity, increase reduction temperature, and desulfurization rate high effect

Active Publication Date: 2014-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] One of the technical problems to be solved by the present invention is that the existing low-carbon olefin desulfurization technology has problems such as complex operation, low selectivity, low breakthrough sulfur capacity, and low desulfurization rate.

Method used

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  • Solid desulfurizing agent and preparation method thereof
  • Solid desulfurizing agent and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0020] Preparation of solid desulfurizer 1. 50g aluminum oxide adopts 25g mass percent concentration to be 10% Mg(NO 3 ) 2 The solution is impregnated with equal volume, after drying at 600 o C, calcined to obtain MgO-modified Al 2 o 3 The carrier is to pulverize the desulfurizer precursor I to obtain a 100-200 mesh powder. The pulverized carrier and water are mixed and beaten at room temperature in a ratio of 1:6 by weight to obtain slurry I, and 50 g of nickel nitrate, 40% zinc nitrate and 10% technetium nitrate The mixed solution and 1.0 mol / L sodium carbonate aqueous solution were dropped into slurry I at the same time, and co-precipitated to form slurry II. Precipitation temperature is 70 o C, the pH value of the control solution is 8.0, after the solution is added dropwise, it will be at 70 oC Under aging for 4 hours, then the precipitate was washed and filtered at 120 oC , dry for 12 hours at 350 oC , roasted for 4 hours, and tableted to obtain solid desulf...

Embodiment 2

[0024] Prepare desulfurizer according to each step in Example 1, just change each material composition, preparation condition, make desulfurizer 2, its composition is calculated as 30%NiO-30%ZnO-30%Al by weight percentage 2 o 3 -5%BeO-5%TcO 4 , wherein the preparation conditions and material composition of the desulfurizer are shown in Table 1; the evaluation conditions are the same as in Example 1, and the evaluation results are shown in Table 2.

Embodiment 3

[0026] Prepare desulfurizing agent according to each step in Example 1, just change each material composition, preparation condition, make desulfurizing agent 2, its composition is calculated as 28%NiO-29%ZnO-28%Al by weight percentage 2 o 3 -4%CaO-5%-CaO-6%MnO 2 , wherein the preparation conditions and material composition of the desulfurizer are shown in Table 1; the evaluation conditions are the same as in Example 1, and the evaluation results are shown in Table 2.

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Abstract

The invention relates to a one-step solid desulfurizing agent used for removal of low carbon olefins from sulfur-containing compounds and a preparation method thereof, and mainly solves the problems that desulfurization methods in the prior art are low in selectivity, low in breakthrough sulfur capacity, low in desulfurization rate and the like. The one-step solid desulfurizing agent is a high activity Ni based desulfurizing agent which comprises the following components by weight: a) 10.0-50.0% of NiO, b) 10.0-50.0% of ZnO, c) 1-25% of an oxide of at least one element selected from group IIVB in the periodic table of elements, d) 2.0-20.0% of an oxide of at least one element selected from group IIA in the periodic table of elements, and e) 10.0-50.0% of Al2O3. By adopting the technical scheme and the preparation method, the problems that desulfurization methods in the prior art are low in selectivity, low in breakthrough sulfur capacity, low in desulfurization rate and the like can be well solved, and the one-step solid desulfurizing agent can be used in the desulfurization process for propylene, butylenes and other low carbon olefin chemical raw materials.

Description

technical field [0001] The invention relates to a solid desulfurizer and a preparation method thereof. Background technique [0002] In recent years, with the improvement of environmental protection regulations in various countries, more and more attention has been paid to the desulfurization technology of gasoline, diesel and other oil products, and there are many literature reports. Although the desulfurization technology of low-carbon olefins has similarities with it, it also has not exactly. Most of the sulfides in gasoline and diesel are impurities such as thiophene and benzothiophene that are difficult to remove. Generally, the content after purification is about tens of ppm, and the purification accuracy is not required. The sulfides in low-carbon olefins mainly include hydrogen sulfide, carbonyl sulfide, methyl mercaptan, ethanethiol, dimethyl sulfide, propylene mercaptan, dimethyl disulfide, methyl ethyl disulfide, carbon disulfide and diethyl disulfide. sulfur et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/08B01J20/30B01D15/00
Inventor 肖永厚王仰东洪涛刘苏
Owner CHINA PETROLEUM & CHEM CORP
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