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Desulfuration adsorbent containing phosphorus and preparation method and application thereof

An adsorbent, content technology, applied in chemical instruments and methods, refined hydrocarbon oil, other chemical processes, etc., can solve the problems of low activity and broken structure of adsorbents

Active Publication Date: 2010-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the chemical reaction of zinc oxide in the adsorption desulfurization process, the structure is broken during the reaction process, and the activity of the adsorbent is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Get 0.80 kilograms of expanded perlite (world mining company, M27, containing 0.79 kilograms on dry basis, silicon oxide content 72wt%, aluminum oxide content 19wt%, all the other are K 2 O, MgO, Fe 2 o 3 etc.), 0.71 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.59 kg on a dry basis, with an alumina content of 44wt.%, a silicon oxide content of 50wt.%, and the rest being CaO, Fe 2 o 3 、TiO 2 etc.), 1.15 kg of hydrated alumina (pseudoboehmite, produced by Shandong Aluminum Plant, containing 0.78 kg on a dry basis) and 9.0 kg of neutral water (pH value is 6-8) are mixed under stirring, and then 200 g 30% nitric acid (chemically pure, produced by Beijing Chemical Plant) was stirred and heated to 80° C. for aging for 2 hours. When the temperature drops below 40° C., add 115 grams of phosphoric acid, stir for 1 hour, then add 3.5 kilograms of zinc oxide (including 3.43 kilograms of pure zinc oxide) powder, mix and stir for 1 hour to obtain a carrier slurry. The ...

Embodiment 2

[0068] Add 3.9 kg of zinc oxide powder (produced by Beijing Chemical Plant) into 5.2 kg of deionized water and stir for 30 minutes to obtain a zinc oxide slurry.

[0069] Take 0.78 kg of expanded perlite (World Mining Company, M27, containing 0.77 kg on a dry basis), 0.57 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.48 kg on a dry basis), 1.15 kg of hydrated alumina (pseudoboehmite, Shandong Produced by aluminum plant, containing 0.78 kilograms on a dry basis) and 3.8 kilograms of neutral water (pH value is 6-8) after mixing under stirring, add 200 grams of 30% nitric acid (chemically pure, produced by Beijing Chemical Plant) and then warming up to After acidifying at 80°C for 2 hours, the temperature was lowered, and 250 g of ammonium dihydrogen phosphate was added and stirred for 1 hour. Then pour the above zinc oxide slurry and stir for 1 hour to obtain a carrier slurry. The carrier slurry uses Niro Bowen Nozzle Tower TM The model spray dryer is used for spray dr...

Embodiment 3

[0072] Get 1.07 kg of diatomite (Beijing Chemical Reagent Factory, containing 0.87 kg on a dry basis, with a silica content of 86.7wt%, an alumina content of 7.5wt.%, and the rest being CaO, Fe 2 o 3 impurities), 0.97 kg of kaolin (Suzhou Kaolin Factory, S1, containing 0.81 kg on dry basis), 1.30 kg of hydrated alumina (produced by Shandong Aluminum Plant, containing 0.88 kg on dry basis) and 9.0 kg of neutral water (pH value is 6- 8) After mixing evenly under stirring, add 135 grams of 30% hydrochloric acid (chemically pure, produced by Beijing Chemical Factory) and stir for acidification for 2 hours, then add 125 grams of diethylphosphine, and heat up to 80° C. for aging for 2 hours. When the temperature dropped below 40° C., 3.1 kg of zinc oxide powder was added for mixing and then stirred for 1 hour to obtain a carrier slurry. The carrier slurry uses Niro Bowen NozzleTower TM The model spray dryer is used for spray drying, the spray drying pressure is 8.5 to 9.5MPa, the ...

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Abstract

The invention provides a phosphorus-containing adsorbent for removing sulfur from cracked gasoline and diesel fuel, which has good wear resistant strength and desulfuration activity. On the basis of the total weight of the adsorbent, the desulfuration adsorbent comprises the following components: 1) 5-35wt% of alumina, 2) 3-30wt% of monox, 3)10-80wt% of at least one metal oxide which is selected from IIB, VB and VIB group, 4) 3-30wt% of at least one accelerator metal which is selected from VIIB and VIII group and 5) 0.3-5wt% of phosphorus oxide calculated on the basis of phosphorus.

Description

technical field [0001] The invention relates to an adsorbent composition suitable for desulfurization in cracked gasoline and diesel fuel and a preparation method thereof. Background technique [0002] The sulfur oxides produced by the combustion of sulfur in vehicle fuels will inhibit the activity of noble metal catalysts in vehicle exhaust converters and cause irreversible poisoning. As a result, the vehicle exhaust contains unburned non-methane hydrocarbons, nitrogen oxides and carbon monoxide, and these exhaust gases are easily catalyzed by sunlight to form photochemical smog and cause acid rain. At the same time, sulfur oxides in the atmosphere are also the main cause of acid rain. one. As people pay more and more attention to environmental protection, environmental regulations are becoming stricter, and reducing the sulfur content of gasoline and diesel is considered to be one of the most important measures to improve air quality. [0003] Most of the sulfur in gasol...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30C10G25/06
Inventor 林伟田辉平朱玉霞王振波张万虹李峥
Owner CHINA PETROLEUM & CHEM CORP
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