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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, O 2 and NH 3 The mass transfer has a certain impact, which reduces the catalytic efficiency of the catalyst

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

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Effect test

Embodiment 1

[0029] A method for preparing a metal sulfate denitration catalyst with high sulfur resistance, adopting a rotary evaporation impregnation method to prepare the metal sulfate denitration catalyst, comprising the following steps:

[0030] a. Take by weighing 0.02g of copper sulfate, place it in a 100ml round-bottomed flask, measure 70ml of deionized water with a measuring cylinder and pour it into the round-bottomed flask, place the round-bottomed flask in an ultrasonic machine, and ultrasonically disperse it evenly to obtain Metal sulfate solution;

[0031] b. Weigh 2g of silicon oxide and place it in the metal sulfate solution of the round-bottomed flask, and ultrasonicate the mixed solution again to form a uniform suspension; place the round-bottomed flask on a rotary evaporator, In the process of water bath at ℃, carry out rotary evaporation to obtain the catalyst precursor;

[0032] c. Place the obtained catalyst precursor in an oven at 60°C and dry it for 12 hours. The d...

Embodiment 2

[0038] This embodiment is basically the same as Embodiment 1, and the special features are:

[0039] A method for preparing a metal sulfate denitration catalyst with high sulfur resistance, adopting a rotary evaporation impregnation method to prepare the metal sulfate denitration catalyst, comprising the following steps:

[0040] Weigh 0.15g of copper sulfate and place it in a 100ml round bottom flask, measure 70ml of ethanol with a graduated cylinder and pour it into the round bottom flask, place the round bottom flask in an ultrasonic machine to disperse evenly, then weigh 2g of silicon oxide Place in the metal sulfate solution in a round bottom flask and sonicate again to form a homogeneous suspension. The round-bottomed flask was placed on a rotary evaporator and rotated in a water bath at 45 °C to obtain the catalyst precursor.

[0041] The obtained catalyst precursor was dried in an oven at 80°C for 6 hours. The dried catalyst precursor was fully ground and passed throu...

Embodiment 3

[0046] This embodiment is basically the same as the previous embodiment, and the special features are:

[0047] A method for preparing a metal sulfate denitration catalyst with high sulfur resistance, adopting a rotary evaporation impregnation method to prepare the metal sulfate denitration catalyst, comprising the following steps:

[0048] Weigh 0.2g of copper sulfate and place it in a 100ml round bottom flask, use a graduated cylinder to measure 70ml of isopropanol and pour it into the round bottom flask, place the round bottom flask in an ultrasonic machine to disperse evenly, then weigh 2g of Zirconia is placed in the metal sulfate solution in a round bottom flask and sonicated again to form a homogeneous suspension. The round-bottomed flask was placed on a rotary evaporator and rotated in a water bath at 50 °C to obtain the catalyst precursor.

[0049] The obtained catalyst precursor was dried in an oven at 60°C for 2 hours. The dried catalyst precursor was fully ground ...

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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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