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Preparation method of carbon monoxide absorbent

A carbon monoxide and adsorbent technology, applied in the field of flue gas purification, can solve the problems of poor desorption performance and poor absorption effect, and achieve the effects of good industrial application prospects, low price and high catalytic activity

Inactive Publication Date: 2016-07-13
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its desorption performance is not good, and the absorption effect is not excellent

Method used

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  • Preparation method of carbon monoxide absorbent

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Effect test

Embodiment 1

[0023] The preparation method of the carbon monoxide adsorbent described in this embodiment specifically comprises the following steps:

[0024] (1) Clean the NaY-type molecular sieve, then put it into a muffle furnace and calcinate at 300°C for 3 hours, grind it into powder and pass it through a 60-mesh sieve;

[0025] (2) Immerse the NaY-type molecular sieve powder obtained in step (1) in 1mol / L CuCl at a solid-to-liquid ratio of 1:5 2 In the solution, then add cerium nitrate to obtain mixed impregnation solution, the addition of cerium nitrate is 5% of molecular sieve quality;

[0026] (3) Put the molecular sieve solution into the reactor, and feed N at a rate of 300ml / min 2 As a shielding gas, the irradiation reaction was carried out with 450W power for 5min.

[0027] (4) Suction filter the molecular sieve obtained in step (3), then dry the filter cake in the reactor with 400W power for 10min, then put it into the tube furnace and pass it with N 2 As a protective gas, i...

Embodiment 2

[0031] The preparation method of the carbon monoxide adsorbent described in this embodiment specifically comprises the following steps:

[0032] (1) Clean the NaY molecular sieve, then put it into a muffle furnace and calcinate at 400°C for 3.5 hours, grind it into powder and pass it through an 80-mesh sieve;

[0033] (2) Immerse the NaY molecular sieve powder obtained in step (1) in 1.2mol / L CuCl at a solid-to-liquid ratio of 1:8 2 In the solution, then add cerium nitrate to obtain mixed impregnation solution, the addition of cerium nitrate is 3% of molecular sieve quality;

[0034] (3) Put the molecular sieve solution into the reactor and feed N at a rate of 500ml / min 2 As a shielding gas, the irradiation reaction was carried out with 550W power for 5.5min.

[0035] (4) Suction filter the molecular sieve obtained in step (3), then dry the filter cake in the reactor with 300W power for 15min, then put it into the tube furnace and pass it with N 2 As a protective gas, it wa...

Embodiment 3

[0039] The preparation method of the carbon monoxide adsorbent described in this embodiment specifically comprises the following steps:

[0040] (1) Clean the NaY-type molecular sieve, then put it into a muffle furnace for calcination at 350°C for 3 hours, grind it into powder and pass it through a 120-mesh sieve;

[0041] (2) Immerse the NaY-type molecular sieve powder obtained in step (1) in 1.4mol / L CuCl at a solid-to-liquid ratio of 1:10 2 In the solution, then add cerium nitrate to obtain mixed impregnation solution, the addition of cerium nitrate is 3.5% of molecular sieve quality;

[0042] (3) Put the molecular sieve solution into the reactor, and feed N at a rate of 600ml / min 2 As a shielding gas, the irradiation reaction was carried out with 650W power for 6min.

[0043] (4) Suction filter the molecular sieve obtained in step (3), then dry the filter cake in the reactor with 450W power for 10min, then put it into the tube furnace and pass it with N 2 As a protective ...

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Abstract

The invention discloses a preparation method of carbon monoxide absorbent which is mainly applicable to the resource recycling of carbon monoxide in yellow phosphorus tail gas and belongs to the field of flue gas purification.The preparation method includes: using NaY type molecular sieve as the carrier to prepare CuCl2 solution, adding the molecular sieve into the CuCl2 solution, adding an appropriate amount cerium nitrate, using a microwave radiation method to perform ion exchanging on the molecular sieve, drying, and calcining the molecular sieve after the exchanging to obtain the absorbent.The absorbent needs to be reductively activated by oxygen before being used, and the used molecular sieve can be desorbed through vacuumizing or heating.The prepared absorbent is short in modification time, high in ion exchanging degree, even in active substance dispersion, high in molecular sieve catalytic activity and promising in industrial application prospect.

Description

technical field [0001] The invention relates to a preparation method of a carbon monoxide adsorbent, which belongs to the field of flue gas purification. Background technique [0002] The background concentration of carbon monoxide in the troposphere is about 0.1-2ppm, which is harmless to the human body. Due to the continuous development of transportation, industrial and mining enterprises in various countries in the world, the consumption of fuels such as coal and oil continues to increase, and the emission of carbon monoxide also increases thereupon. According to incomplete statistics in 1970, the total emissions of carbon monoxide in the world reached 371 million tons. Among them, the emission of automobile exhaust gas accounts for 237 million tons, accounting for about 64%, which has become an increasingly serious source of urban air pollution. The use of heating and samovar stoves not only pollutes the indoor air, but also increases the urban air pollution. Some nat...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/32B01D53/02
CPCB01D53/02B01J20/16B01J20/3204B01J20/3234B01D2257/502
Inventor 王学谦程晨严书娣马懿星王郎郎张英杰
Owner KUNMING UNIV OF SCI & TECH
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