High-sulfur-resistance metal sulfate denitration catalyst and preparation method thereof

A metal sulfate and denitrification catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of reduced catalytic efficiency of catalysts, and achieve suitable promotion and use, high SCR activity, and avoid deposition Effect

Pending Publication Date: 2021-05-28
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the introduction of the shell will inevitably cover certain active sites. For the reaction gases NO,

Method used

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  • High-sulfur-resistance metal sulfate denitration catalyst and preparation method thereof
  • High-sulfur-resistance metal sulfate denitration catalyst and preparation method thereof
  • High-sulfur-resistance metal sulfate denitration catalyst and preparation method thereof

Examples

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Example Embodiment

[0028]Example 1:

[0029]A method for preparing a highly resistant metal sulfate denitrify catalyst, using a rotary evaporation impregnation method, including the following steps:

[0030]a. Tighted 0.02 g of copper sulfate, placed in a 100 mL round bottom flask, taking 70 ml of deionized water into the round bottom flask, and the ultrasound is uniform, and the ultrasound is uniform. Metal sulfate solution;

[0031]b. Time of 2 g of silicon is placed in a metal sulfate solution of the round bottom flask, and the mixture is again sonicated to form a uniform suspension; place the round bottom flask on the rotary evaporator, in 40 During the ° C water bath, rotary evaporation is carried out, and the catalyst precursor is obtained;

[0032]c. The obtained catalyst precursor is placed in an oven at 60 ° C, performing drying 12h, and the catalyst precursor after drying is sufficiently ground and over 60 mesh screen, resulting in a catalyst precursor powder;

[0033]d. Place the catalyst precursor powder...

Example Embodiment

[0037]Example 2:

[0038]This example is basically the same as that of Example 1, in particular

[0039]A method for preparing a highly resistant metal sulfate denitrify catalyst, using a rotary evaporation impregnation method, including the following steps:

[0040]0.15 g of copper is placed in a 100 ml round bottom flask, and the amount of 70 ml of ethanol is poured into the round bottom flask, and the round bottom flask is dispersed evenly, and then 2G silicon oxide. In the metal sulfate solution placed in a round bottom flask, it is again ultrasound to form a uniform suspension. The round bottom flask was placed on a rotary evaporator to rotary evaporation during a water bath of 45 ° C to obtain a catalyst precursor.

[0041]The obtained catalyst precursor was placed in a 80 ° C oven drying for 6 h, and the catalyst precursor was sufficiently ground and passed over 60 mesh screen, and the ground catalyst precursor was placed in a tubular furnace and calcining conditions: The starting temper...

Example Embodiment

[0045]Example 3:

[0046]This embodiment is substantially the same as the foregoing embodiment, in particular

[0047]A method for preparing a highly resistant metal sulfate denitrify catalyst, using a rotary evaporation impregnation method, including the following steps:

[0048]Weigh 0.2 g of copper sulfate in a 100 ml round bottom flask, and the amount of 70 ml of isopropyl alcohol is poured into the round bottom flask, and the round bottom flask is placed in ultrasound to make it uniform, and then prove 2g Zirconium oxide is placed in a metal sulfate solution of a round bottom flask, and then ultrasonically forms a uniform suspension. The round bottom flask was placed on a rotary evaporator in a 50 ° C water bath process to rotate and evaporated, and the catalyst precursor was obtained.

[0049]The obtained catalyst precursor was placed in a 60 ° C oven drying for 2 h, and the catalyst precursor was sufficiently ground and passed through 60 mesh screen, and the ground catalyst precursor was...

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Abstract

The invention discloses a high-sulfur-resistance metal sulfate denitration catalyst and a preparation method thereof, and belongs to the field of thermocatalytic material preparation and atmosphere control. According to the method, 1-20wt% of metal sulfate is anchored on a carrier by a rotary evaporation impregnation method, so that the metal sulfate is uniformly distributed on the carrier, and then drying and high-temperature calcination are performed to obtain the catalyst. The catalyst disclosed by the invention has the advantages of excellent SCR activity, super-strong sulfur resistance, relatively good durability and cycling stability, simplicity and convenience in preparation, easiness in obtaining and the like. The catalyst can be used for catalytic treatment of nitrogen oxides in tail gas generated by various stationary pollution sources such as coal-fired power plants, biomass power plants and waste incineration boilers.

Description

technical field [0001] The invention discloses a preparation method of a metal sulfate denitrification catalyst with high sulfur resistance, and belongs to the fields of thermocatalytic material preparation and atmospheric treatment. It is used for the catalytic treatment of nitrogen oxides in the tail gas produced by various fixed pollution sources such as coal-fired power plants, biomass power plants, and waste incineration boilers. Background technique [0002] In the process of rapid development of the modern economy and the accelerated process of industrialization, the massive consumption of fossil fuels will result in the emission of a large amount of harmful gases to the environment. Among them, nitrogen oxides are one of the main air pollutants, nitrogen oxides NO x , which mainly includes NO and NO 2 , will cause acid rain, photochemical smog and human respiratory diseases. Selective catalytic reduction of ammonia (NH 3 -SCR) is currently the most effective way ...

Claims

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Application Information

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IPC IPC(8): B01J27/055B01J27/053B01D53/86B01D53/56
CPCB01J27/055B01J27/053B01D53/8628
Inventor 张登松何结兵王芃芦韩璐蓬邓江颜婷婷
Owner SHANGHAI UNIV
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