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Modified activated carbon and composite material as well as preparation methods and application thereof

A composite material and activated carbon technology, applied in the field of desulfurization, can solve problems such as difficult to balance desulfurization rate and penetration sulfur capacity, and achieve the effects of promoting development, good regeneration performance, and high penetration sulfur capacity

Active Publication Date: 2021-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a modified activated carbon and composite material and its preparation method and application

Method used

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  • Modified activated carbon and composite material as well as preparation methods and application thereof
  • Modified activated carbon and composite material as well as preparation methods and application thereof
  • Modified activated carbon and composite material as well as preparation methods and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] According to the method for preparing modified activated carbon of the present invention, the amount of the precursor of the activated carbon and the alkali metal makes the weight ratio between the activated carbon and the alkali metal element in the obtained modified activated carbon preferably 100:(0.5-2).

[0054] According to the method for preparing modified activated carbon of the present invention, the amount of the activated carbon and the silicon-containing binder is such that the weight ratio between activated carbon and silicon in the obtained modified activated carbon is preferably 100:(1-2.8).

[0055] According to the method for preparing modified activated carbon of the present invention, the activated carbon can be various common activated carbons, preferably, the specific surface area of ​​the activated carbon is ≥700m 2 / g, more preferably 700-1000m 2 / g.

[0056] According to the method for preparing modified activated carbon of the present invention...

Embodiment approach

[0078] According to another embodiment of the present invention, the present invention provides a kind of method for preparing composite material, it is characterized in that, this method comprises:

[0079] (1) In the presence of a solvent, knead, shape, dry and roast activated carbon, the precursor of an alkali metal, a silicon-containing binder and an optional pore-enlarging agent to obtain a modified activated carbon, wherein the activated carbon , the precursor of alkali metal and the consumption of silicon-containing binder make the weight ratio between activated carbon, alkali metal element and silicon element in the gained modified activated carbon be 100:(0.2-3):(0.8-5);

[0080] (2) The precursor of the active component is contacted with the modified activated carbon so that the modified activated carbon is loaded with the active component, wherein the precursor of the active component contains a precursor of iron and a rare earth element , the amount of the precurso...

Embodiment 1

[0155] This example is used to illustrate the composite material (or adsorbent) of the present invention and its preparation method.

[0156] Weigh 925g specific surface area is 906m 2 The coconut shell activated carbon of / g, 32.67g purity are the sodium bicarbonate of 99% by weight, the polyethylene glycol that 28g purity is 99% by weight, the three are mixed uniformly to form material A.

[0157] Weigh 66.67g alkaline silica sol (SiO 2 content is 30% by weight), the silica sol was dissolved into 360g of deionized water, stirred evenly, and prepared as a binder.

[0158] The binder is added to the material A, and extruded on the extruder to obtain The strip-shaped material obtained is first dried at 60°C for 3 hours, then dried at 120°C for 5h, and then calcined at 550°C for 4 hours to obtain modified activated carbon (or adsorbent carrier), and its specific surface area and The pore volume was measured, and the results are shown in Table 4.

[0159] Take by weighing 45...

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Abstract

The invention relates to the technical field of desulfurization, and discloses modified activated carbon and a composite material as well as preparation methods and application thereof. The modified activated carbon contains activated carbon, an oxide of an alkali metal and an oxide of silicon, and the weight ratio of the activated carbon to the oxide of the alkali metal to the oxide of the silicon is 100: (0.2-3): (0.8-5). The composite material contains activated carbon, an oxide of alkali metal, an oxide of silicon, an oxide of iron and an oxide of a rare earth element, and the weight ratio of the activated carbon to the oxide of alkali metal to the oxide of silicon to the oxide of iron to the oxide of the rare earth element is 100: (0.2-3): (0.8-5): (0.5-5): (1-10). The invention further discloses preparation methods of the modified activated carbon and the composite material and application of the modified activated carbon and the composite material in desulfurization. The composite material prepared from the modified activated carbon has high breakthrough sulfur capacity as an adsorbent.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to modified activated carbon and composite materials and their preparation methods and applications. Background technique [0002] SO 2 is the main cause of acid rain; SO 2 It can destroy the physiological functions of plants, slow down the growth of crops and trees; the human body inhales a high concentration of SO 2 Gas, will have a strong irritant effect on the respiratory tract. SO 2 As the main air pollutants, it has been widely paid attention to by people. According to reports, taking China as an example, SO 2 The discharge has caused 40% of the country's land area to be harmed by acid rain, and the annual loss is as high as 110 billion yuan. Therefore, control pollution, reduce SO 2 Emissions are an important task for the sustainable development of my country's economy and society. [0003] Industrial heating furnace flue gas, sulfur tail gas and catalytic cra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/02B01D53/48B01D53/50B01D53/75C01B17/04C01B17/16F23G7/06
CPCB01J20/20B01J20/041B01J20/103B01J20/06B01D53/02B01D53/75B01D53/48B01D53/50F23G7/06C01B17/04C01B17/16C01B17/164B01J2220/42B01J2220/4806B01D2257/302B01D2258/0283B01D2253/1124F23G2209/14B01D2253/102B01J21/08B01J23/83B01J21/18B01J23/78F23J2215/20F23G7/07F23J2219/30B01J37/04B01J37/088B01J37/0018B01J37/0009B01J37/082B01J37/0201B01J37/0207Y02A50/20C01B17/56C01B17/167B01D2253/106B01D2253/25B01J20/2808B01J20/28083B01J20/28092B01J20/28057B01J20/3064B01J20/3078B01J20/3007B01J20/3014B01J20/2803B01J20/3204B01J20/3236B01D53/508B01D53/82B01J35/60B01J35/63B01J35/617B01J35/64B01J35/633B01D53/0423B01D53/96B01D2253/308B01D2253/31B01D2253/311B01D2259/4009B01J20/28064B01J20/28071C01B17/508
Inventor 徐翠翠刘爱华韩峰刘剑利刘增让陶卫东常文之吕才山
Owner CHINA PETROLEUM & CHEM CORP
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