CN104209092B - A kind of factory air adsorbent and preparation method thereof - Google Patents

Abstract

The invention discloses an air adsorbent for factories, comprising: activated carbon: 40-60 parts; potassium permanganate: 10-15 parts; silica gel: 5-10 parts; slaked lime: 5-10 parts; modified diatomite : 5‑10 servings. The invention also discloses a preparation method. The adsorbent prepared by the method of the present invention has a high adsorption capacity for nitrogen oxides, sulfur oxides, ammonia and other harmful gases, and has good water resistance, and in the process of use, no dust is generated, and the operation is convenient. Very suitable for industrial applications.

Description

A kind of factory air adsorbent and preparation method thereof

technical field

The invention relates to an air adsorbent and a preparation method thereof, in particular to a preparation method of an air adsorbent for a factory.

Background technique

How to deal with harmful gases such as nitrogen oxides, sulfur oxides, and ammonia produced in the production process of factories has always been an environmental protection issue that plagues many countries. If the treatment is not timely or reasonable, it will cause serious air pollution. However, the current treatment methods , its treatment effect is not very ideal, and the final discharged gas cannot stably meet the emission standards stipulated by the state, so it has not been popularized and applied.

Contents of the invention

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a kind of factory air adsorbent with good water resistance and excellent adsorption effect and its preparation method.

The present invention is achieved through the following technical solutions:

A kind of factory air adsorbent is characterized in that, comprises following component and the parts by weight of each component are respectively:

Activated carbon: 40-60 parts;

Potassium permanganate: 10-15 parts;

Silica gel: 5-10 parts;

Slaked lime: 5-10 parts;

Modified diatomaceous earth: 5-10 parts.

Further, the air adsorbent for factory includes the following components and the parts by weight of each component are respectively:

Activated carbon: 50 parts;

Potassium permanganate: 10 parts;

Silica gel: 10 parts;

Slaked lime: 10 parts;

Modified diatomaceous earth: 10 parts.

And the modified diatomite includes the following components, and the parts by weight of each component are respectively:

Diatomite: 70-90 parts;

Coupling agent: 1-3 parts;

Sodium benzoate: 1-3 parts.

The internal coupling agent is the silane coupling agent KH550.

In addition, the preparation method of the modified diatomite is as follows: first, calcinate the diatomite in a calciner at a temperature of 500-550°C for 5-6 hours, then take it out, cool it, pickle it, filter it, and wash it. Finally, a coupling agent and sodium benzoate are added according to the weight fraction ratio, and powdery modified diatomite is obtained after being ground through a 150-mesh sieve and dried.

And the preparation method of above-mentioned factory air adsorbent is characterized in that, comprises the following steps: with active carbon: 40-60 parts; Potassium permanganate: 10-15 parts; Silica gel: 5-10 parts; Slaked lime: 5-10 parts Parts; Modified diatomaceous earth: 5-10 parts after mixing, add 50-80% of the total weight of the mixed raw materials in water, knead and shape, then dry to obtain the target product.

Wherein, the drying temperature in the drying step is 100-120°C.

The beneficial effects of the present invention are: the adsorbent prepared by the method of the present invention has a high adsorption capacity for harmful gases such as nitrogen oxides, sulfur oxides, and ammonia, and has good water resistance, and during use, No dust generation, easy operation, very suitable for industrial applications.

detailed description

The specific implementation manner of the present invention will be described in detail below in conjunction with specific embodiment:

Example 1 :

Activated carbon: 40 parts; potassium permanganate: 10 parts; silica gel: 10 parts; slaked lime: 10 parts; , dried at a temperature of 100°C to obtain an air adsorbent for factory use. In this example, the modified diatomite includes diatomite: 70 parts; silane coupling agent KH55: 1 part; sodium benzoate: 3 parts, and the preparation method of the modified diatomite is as follows: : First, diatomite is calcined in a calciner at a temperature of 500°C for 6 hours, then taken out, cooled, pickled, filtered, washed, and then added with a coupling agent and sodium benzoate according to the weight fraction ratio, and ground through a 150-mesh Sieve and dry to obtain powdery modified diatomite.

Example 2 :

Activated carbon: 60 parts; potassium permanganate: 15 parts; silica gel: 5 parts; slaked lime: 5 parts; , and dried at a temperature of 120° C. to obtain an air adsorbent for factory use. In this example, the modified diatomite includes diatomite: 90 parts; silane coupling agent KH55: 3 parts; sodium benzoate: 1 part, and the preparation method of the modified diatomite is as follows: : First, diatomite is calcined in a calciner at a temperature of 550°C for 5 hours, then taken out, cooled, pickled, filtered, washed, and then added coupling agent and sodium benzoate according to the weight fraction ratio, and ground through 150 mesh Sieve and dry to obtain powdery modified diatomite.

Example 3 :

Activated carbon: 50 parts; potassium permanganate: 12 parts; silica gel: 8 parts; slaked lime: 8 parts; , and dried at a temperature of 110° C. to obtain an air adsorbent for factory use. In this embodiment, the modified diatomite includes 80 parts of diatomite; silane coupling agent KH55: 2 parts; sodium benzoate: 2 parts, and the preparation method of the modified diatomite is as follows: : First, diatomite is calcined in a calciner at a temperature of 530°C for 5 hours, then taken out, cooled, pickled, filtered, washed, and then added coupling agent and sodium benzoate according to the weight fraction ratio, and ground through 150 mesh Sieve and dry to obtain powdery modified diatomite.

Example 4

Activated carbon: 50 parts; potassium permanganate: 10 parts; silica gel: 10 parts; slaked lime: 10 parts; , and dried at a temperature of 110° C. to obtain an air adsorbent for factory use. In this embodiment, the modified diatomite includes 80 parts of diatomite; silane coupling agent KH55: 2 parts; sodium benzoate: 2 parts, and the preparation method of the modified diatomite is as follows: : First, diatomite is calcined in a calciner at a temperature of 520°C for 6 hours, then taken out, cooled, pickled, filtered, washed, and then added coupling agent and sodium benzoate according to the weight fraction ratio, and ground through 150 mesh Sieve and dry to obtain powdery modified diatomite.

The adsorption performance of the factory air adsorbent prepared according to the method described in above-mentioned embodiment 1-4 is as shown in table 1:

Table 1: Adsorption performance of air adsorbents used in factories:

It can be seen from Table 1 that the factory air adsorbent prepared by the method of the present invention has very good adsorption performance, high adsorption efficiency, no dust generation during use, easy operation, and is very suitable for industrial application.

The above has disclosed the present invention with preferred embodiments, but it is not intended to limit the present invention, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation methods fall within the protection scope of the present invention.

Claims (2)

1. a plant air adsorbent, it is characterised in that be made up of following components, and the parts by weight of each component are respectively as follows: activated carbon: 50 parts；Potassium permanganate: 10 parts；Silica gel: 10 Part；Slaked lime: 10 parts；Modification infusorial earth: 10 parts, and described modification infusorial earth includes following components, and the parts by weight of each component are respectively as follows: kieselguhr: 70-90 Part；Coupling agent: 1-3 part；Sodium benzoate: 1-3 part, described coupling agent is Silane coupling agent KH550, the preparation method of described modification infusorial earth is: first kieselguhr calcined in calcining furnace under the temperature conditions of 500-550 DEG C 5-6h, then take out, cool down, through pickling, filter, wash after according to weight fraction than adding coupling agent and sodium benzoate, ground mistake 150 Mesh sieve, obtain the modification infusorial earth of powder after drying.

2. the preparation method of the plant air adsorbent described in a claim 1, it is characterised in that comprise the following steps: by activated carbon: 50 parts；Potassium permanganate: 10 parts；Silica gel: 10 parts；Slaked lime: 10 parts；Modification infusorial earth: after 10 parts of mixing, being dried to obtain target product after adding mixing after the water of raw material gross weight 50-80% after mixing and molding, the described baking temperature in drying steps is 100-120 DEG C.