A novel desulfurization adsorbent and its preparation method

A new type of desulfurization and adsorbent technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc. In addition to other problems, it can achieve the effect of remarkable desulfurization effect, low sodium oxide content and simple regeneration.

Active Publication Date: 2019-11-15
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] CN104549143A discloses an activated carbon desulfurization adsorbent and its preparation method, which mainly solves the problem that a single adsorbent cannot effectively remove multiple sulfides at the same time, low sulfur removal rate and wear of desulfurizer in the existing gas raw material adsorption purification desulfurization technology. Problems such as low sulfur permeability
However, its recycling as a carrier, especially as a carrier for desulfurization adsorbents, is rarely used

Method used

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  • A novel desulfurization adsorbent and its preparation method
  • A novel desulfurization adsorbent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix the flue gas dust collected from petrochemical enterprises with 50% sulfuric acid solution at a liquid-solid ratio of 3:1. After reacting at 110°C for 1 hour, the mixed solution is separated from solid and liquid by a centrifuge. The solid obtained after solid-liquid separation is washed with water to pH = 7, and dried at 120°C to obtain a high-quality carrier material with high specific surface area, large pore volume, and wide pore size distribution range. For physical properties of the carrier material see figure 1 .

[0022] (2) The self-made support obtained above is placed in the vanadium oxalate solution that has been completely dissolved by the method of supersaturated impregnation, and the amount of impregnation is V 2 o 5 Calculated as 3%, put the uniformly stirred sample under an infrared lamp, stir intermittently until the impregnation solution is completely dry, and finally dry the solid at 120°C for 4 hours, and then roast it in a muffle furnace ...

Embodiment 2

[0026] (1) Mix the flue gas dust collected from petrochemical enterprises with 50% sulfuric acid solution according to the liquid-solid ratio of 3.2:1. After reacting at 120°C for 1 hour, the mixed solution is separated from solid and liquid by centrifuge. The solid obtained after solid-liquid separation is washed with water to pH = 7, and dried at 120°C to obtain a high-quality carrier material with high specific surface area, large pore volume, and wide pore size distribution range. For physical properties of the carrier material see figure 1 .

[0027] (2) The self-made support obtained above is placed in the vanadium naphthenate solution that has been completely dissolved by the method of supersaturated impregnation, and the amount of impregnation is V 2 o 5 Calculated as 3.2%, put the evenly stirred sample under an infrared lamp, stir intermittently until the impregnation solution is completely dry, and finally dry the solid at 120°C for 4 hours, and then roast it in a ...

Embodiment 3

[0031] (1) Mix the flue gas dust collected from petrochemical enterprises with 50% sulfuric acid solution at a liquid-solid ratio of 2.9:1. After reacting at 100°C for 1 hour, the mixed solution is separated from solid and liquid by a centrifuge. The solid obtained after solid-liquid separation is washed with water to pH = 7, and dried at 120°C to obtain a high-quality carrier material with high specific surface area, large pore volume, and wide pore size distribution range. For physical properties of the carrier material see figure 1 .

[0032] (2) The self-made carrier obtained above is placed in the fully dissolved ammonium metavanadate solution by supersaturated impregnation, and the amount of impregnation is V 2 o 5 Calculated as 4%, put the uniformly stirred sample under an infrared lamp, stir intermittently until the impregnation solution is completely dry, and finally dry the solid at 120°C for 4 hours, and then roast it in a muffle furnace at 600°C for 4 hours to ob...

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Abstract

The invention provides a desulfuration adsorbent for a petrochemical engineering process. The adsorbent is an auxiliary taking a self-prepared mesoporous material as a carrier; titanium and vanadium are taken as main active components; a silicon -phosphate-aluminum gel is taken as a binding agent; the doping amount of vanadium based on V2O5 is 2-6%; the doping amount of titanium based on TiO2 is 10-30%. In the preparation process of the adsorbent provided by the invention, the treated smoke dust generated by a petrochemical enterprise is reasonably utilized as a carrier of the desulfuration adsorbent and two metals, namely titanium and vanadium, are simultaneously introduced into the carrier, so that the petrifaction solid wastes are treated, the desulfuration capacity of the desulfuration adsorbent is enhanced and the adsorbent is economical and environmentally friendly.

Description

technical field [0001] The invention relates to the preparation and application of a novel desulfurization adsorbent, which belongs to the field of solid waste treatment and development and application of catalytic cracking additives. Background technique [0002] In recent years, air pollution has become the focus of attention. As people call for environmental safety, the state's environmental protection policies are more stringent. In 2014, my country proposed the National V standard for gasoline. Compared with the National IV standard, the sulfur content and olefin content in the National V gasoline standard have been significantly reduced, which increases the difficulty of reducing the sulfur content in gasoline. [0003] Gasoline contains a variety of sulfur compounds, such as mercaptans, disulfides, sulfides, and thiophene sulfides. Sulfur dioxide, sulfur trioxide, and other sulfides produced after combustion will directly cause acid rain and cause serious pollution t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30B01J20/28
CPCB01J20/02B01J20/06B01J20/28061B01J20/28085B01J2220/42B01J2220/4887
Inventor 吕灵灵高明军李正叶红张新功
Owner QINGDAO HUICHENG PETROCHEM TECH
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