Preparation method and application of SO2 adsorbing material

An adsorption material, SO2 technology, applied in the field of preparation of SO2 adsorption materials, can solve problems such as unfavorable selective physical adsorption

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the metal-organic framework material is based on the metal as the central node, contains metal oxides, and adsorbs SO 2 At the same time, it is easy to undergo chemical reactions, so it is suitable for low concentrations of SO 2 Chemisorption of gas is not conducive to SO 2 selective physical adsorption

Method used

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  • Preparation method and application of SO2 adsorbing material
  • Preparation method and application of SO2 adsorbing material
  • Preparation method and application of SO2 adsorbing material

Examples

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specific Embodiment approach

[0015] Further illustrate the SO of the present invention by embodiment below 2 Adsorbent material and its preparation method and application. Embodiments are carried out on the premise of the technical solutions of the present invention, and detailed implementation methods and specific operation processes are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0016] The experimental methods in the following examples are conventional methods in the art unless otherwise specified. The experimental materials used in the following examples were purchased from conventional biochemical reagent stores unless otherwise specified.

[0017] The specific surface area of ​​material in the present invention, pore volume pass N 2 The adsorption-desorption curve was obtained by the adsorption instrument test. The content of metal elements was analyzed by ICP method. SO in gas 2 The content was analyzed by instrument (Emerson X-STR...

Embodiment 1

[0021] Based on MIL-100(Al), the specific surface area is 1180m 2 / g, the pore volume is 0.64cm 3 / g, the Al content is 15.2%. In the presence of nitrogen, after carbonization at 800°C for 6 hours, soak and stir in 10% hydrochloric acid solution for 12 hours for pickling, filter and dry at 100°C for 8 hours. The above materials were placed in an aqueous solution of ethylenediamine with a volume concentration of 30%, and modified at 600°C for 1 hour in the presence of nitrogen to obtain SO 2 Adsorbent material. After testing, the specific surface area of ​​the prepared material is 2150m 2 / g, the pore volume is 2.55cm 3 / g, does not contain metal elements.

Embodiment 2

[0023] Based on MIL-53(Al), the specific surface area is 1135 m 2 / g, the pore volume is 0.54 cm 3 / g, the Al content is 20.5%. In the presence of nitrogen, after carbonization at 800°C for 6 hours, soak and stir in 10% hydrochloric acid solution for 12 hours for pickling, filter and dry at 100°C for 8 hours. The above materials were placed in an aqueous solution of ethylenediamine with a volume concentration of 30%, and modified at 600°C for 1 hour in the presence of nitrogen to obtain SO 2 Adsorbent material. After testing, the specific surface area of ​​the prepared material is 1895m 2 / g, the pore volume is 2.37cm 3 / g, does not contain metal elements.

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Abstract

The invention relates to an SO2 adsorbing material and a preparation method thereof. The preparation method includes the steps that an MIL-(Al) metal organic framework material serves as a matrix; filtering and drying are conducted after carbonization and acid pickling are conducted; the material is placed in an ethylenediamine aqueous solution, modification treatment is conducted in the presenceof N2 at the temperature of 500-800 DEG C, and the SO2 adsorbing material is obtained after treatment. The adsorbing material disclosed by the invention is obtained on the basis of a modified metal organic framework material, has relatively high SO2 adsorption capacity, is good in stability under a variable-pressure condition, and is beneficial to selective physical adsorption of SO2.

Description

technical field [0001] The invention belongs to the field of air pollution control, in particular to a SO 2 Preparation methods and applications of adsorbent materials. Background technique [0002] SO 2 It is one of the main air pollutants and one of the main chemical substances that form acid rain and photochemical smog. Fossil fuels (coal, petroleum, etc.) contain a large amount of sulfur, and direct combustion will result in high levels of SO in the flue gas 2 . Currently, the widely used SO 2 The removal methods are divided into wet desulfurization technology and dry desulfurization technology. Wet desulfurization mainly uses alkali washing and SO 2 reaction, converted to sulfate removal. Dry desulfurization technology is mainly to absorb SO in the flue gas under the action of adsorption materials. 2 , desorb after the adsorption is saturated, and can be further recycled. [0003] The activated carbon (coke) material widely used in industry has a high specific ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCB01J20/226B01J20/28066B01J20/3078B01J20/3085B01D53/02B01D2253/204B01D2257/302B01D2258/0283Y02A50/20
Inventor 汪鹏赵磊刘忠生王学海王宽岭刘淑鹤
Owner CHINA PETROLEUM & CHEM CORP
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