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Diatomite desulfurizer as well as preparation method and application thereof

A technology of diatomite and desulfurization agent, which is applied in the field of gasoline, can solve the problems of secondary pollution of waste adsorbents, and achieve the effects of no secondary pollution, low production cost and good regeneration performance

Inactive Publication Date: 2017-05-31
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some materials also have secondary pollution and disposal problems of waste adsorbents
In addition, the existing desulfurizers mostly use activated carbon, ZSM-5 and other materials, and diatomite is rarely used due to its own structure.

Method used

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  • Diatomite desulfurizer as well as preparation method and application thereof
  • Diatomite desulfurizer as well as preparation method and application thereof
  • Diatomite desulfurizer as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] In the embodiment of the present invention, a diatomite desulfurizer is composed of the following raw materials in parts by weight: 28 parts of diatomite, 1 part of hydroxypropyl guar gum, 3 parts of perillaldehyde, and 11 parts of acetic acid.

[0018] Acetic acid solution is prepared by mixing acetic acid with 6.8 times its mass of ethanol with a volume concentration of 65%. Mix and grind diatomaceous earth and hydroxypropyl guar gum for 1.5h, then add acetic acid solution, raise the temperature to 69°C and seal and stir at this temperature for 1.9h, then raise the temperature to 83°C and add perillaldehyde dropwise, dropwise After the addition is completed, ultrasonically treat at this temperature for 22 minutes with an ultrasonic power of 1000W, then stir at a temperature of 99°C until dry, and then calcinate in a muffle furnace at 440°C for 4.3 hours to obtain a desulfurizer.

Embodiment 2

[0020] In the embodiment of the present invention, a diatomite desulfurizer is composed of the following raw materials in parts by weight: 36 parts of diatomite, 5 parts of hydroxypropyl guar gum, 7 parts of perillaldehyde, and 19 parts of acetic acid.

[0021] Mix acetic acid with 6.8 times its mass of 65% ethanol to prepare an acetic acid solution. Mix and grind diatomaceous earth and hydroxypropyl guar gum for 1.6h, then add acetic acid solution, raise the temperature to 69°C and seal and stir at this temperature for 1.9h, then raise the temperature to 83°C and add perillaldehyde dropwise, dropwise After the addition was completed, ultrasonic treatment was carried out at this temperature for 22 minutes with an ultrasonic power of 1000 W, and then stirred at a temperature of 101°C until dry, and then calcined in a muffle furnace at 440°C for 4.3 hours to obtain a desulfurizer.

Embodiment 3

[0023] In the embodiment of the present invention, a diatomite desulfurizer is composed of the following raw materials in parts by weight: 30 parts of diatomite, 2 parts of hydroxypropyl guar gum, 4 parts of perillaldehyde, and 13 parts of acetic acid.

[0024] Mix acetic acid with 6.8 times its mass of 65% ethanol to prepare an acetic acid solution. Mix and grind diatomaceous earth and hydroxypropyl guar gum for 1.55h, then add acetic acid solution, raise the temperature to 69°C and seal and stir at this temperature for 1.9h, then raise the temperature to 83°C and add perillaldehyde dropwise, dropwise After the addition was completed, ultrasonic treatment was carried out at this temperature for 22 minutes with an ultrasonic power of 1000 W, and then stirred at a temperature of 100°C until dry, and then calcined in a muffle furnace at 440°C for 4.3 hours to obtain a desulfurizing agent.

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Abstract

The invention discloses a diatomite desulfurizer as well as a preparation method and application thereof. The diatomite desulfurizer is prepared from the following raw materials in parts by weight: 28 to 36 parts of diatomite, 1 to 5 parts of hydroxypropyl guar gum, 3 to 7 parts of perillaldehyde and 11 to 19 parts of acetic acid. The preparation method comprises the following steps: using the diatomite as a raw material; mixing the diatomite with the hydroxypropyl guar gum and grinding the mixture; then carrying out treatment on the acetic acid and the perillaldehyde to obtain the desulfurizer. By means of the desulfurizer, gasoline with ultralow sulfur content being less than 6[mu]g / g can be obtained under the condition that (Research Octane Number) loss is smaller than 2.0. The diatomite desulfurizer disclosed by the invention has the advantages of good selectivity to sulfur, high desulfurization depth, long service life, environment friendliness, no secondary pollution and good regeneration performance; octane loss caused by hydrogenation saturation of olefins is avoided while sulfur-containing compounds in the gasoline can be deeply deprived; the preparation method disclosed by the invention has the advantages of simple preparation process, easiness in operation, stable performance, low production cost and suitability for industrial production.

Description

technical field [0001] The invention relates to the technical field of gasoline, in particular to a diatomite desulfurizer and a preparation method and application thereof. Background technique [0002] The ultra-deep desulfurization of gasoline has become an important problem to be solved worldwide. The combustion of sulfur in gasoline produces sulfur oxides (SOx), which is one of the main pollutants in the atmosphere. When it is discharged into the air, it will form acid rain and damage the ecological environment. In addition, sulfur oxides can also corrode and damage engine components, poison motor vehicle exhaust gas treatment catalysts, reduce their catalytic activity, increase the emission of particulate pollutants, and aggravate urban environmental pollution. Therefore, limiting the sulfur content is an important indicator in the standard of motor gasoline, and also a key factor in evaluating the cleanliness of gasoline. Only 34% of foreign gasoline blending compone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/14C10G25/00
CPCB01J20/14B01D53/02B01D2257/302C10G25/003C10G2300/202C10G2400/02
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD