Flame-retardant honeycomb adsorbent and preparation method and application thereof
A honeycomb and flame-retardant technology, which is applied in the field of flame-retardant honeycomb adsorbent and its preparation, can solve the problems of incomplete desorption of adsorbent, influence on safety and reliability, and high temperature resistance of adsorbent.
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[0021] The invention provides a method for preparing a flame-retardant honeycomb adsorbent, comprising the following steps:
[0022] (1) Mix attapulgite clay and inorganic acid for activation treatment to obtain an activation treatment system, including activated attapulgite clay;
[0023] (2) roasting the activation treatment system to obtain roasted attapulgite clay;
[0024] (3) After mixing the calcined attapulgite clay, inorganic binder and water, extruding, drying and roasting are carried out in sequence to obtain a flame-retardant honeycomb adsorbent.
[0025] In the present invention, unless otherwise specified, the raw materials used are conventional commercially available products in this field.
[0026] The invention mixes attapulgite clay and inorganic acid for activation treatment to obtain an activation treatment system, including activated attapulgite clay.
[0027] In the present invention, the mass ratio of the attapulgite clay to the solute in the inorganic...
Embodiment 1
[0044] Attapulgite clay (specific surface area is 300m 2 / g) and dilute sulfuric acid with a mass concentration of 10%, are mixed in a mass ratio of 1:10 for activation treatment, the temperature of the activation treatment is 20° C., and the time of the activation treatment is 1 h to obtain an activation treatment system;
[0045] The activation treatment system is sequentially filtered and washed to obtain activated attapulgite clay;
[0046] Calcining the activated attapulgite clay at a temperature of 400° C. for 2 hours to obtain the roasted attapulgite clay;
[0047] The roasted attapulgite clay was successively crushed and ground into 100 meshes, mixed with kaolin and deionized water in a mass ratio of 1:0.02:0.1, and extruded at a pressure of 10 MPa for 250 minutes to obtain wet State honeycomb carrier finished product;
[0048] Put the wet honeycomb carrier under ventilated conditions for 2 hours, then quickly dry it with hot air at 50°C for 12 hours, and bake it at ...
Embodiment 2
[0067] Attapulgite clay (specific surface area is 300m 2 / g) and dilute sulfuric acid with a mass concentration of 1%, are mixed according to a mass ratio of 1:1 for activation treatment, the temperature of the activation treatment is 80° C., and the time of the activation treatment is 10 h to obtain an activation treatment system;
[0068] The activation treatment system is sequentially filtered and washed to obtain activated attapulgite clay;
[0069] Calcining the activated attapulgite clay at a temperature of 600° C. for 12 hours to obtain the roasted attapulgite clay;
[0070] The roasted attapulgite clay was successively crushed and ground into 600 meshes, mixed with kaolin and deionized water in a mass ratio of 1:0.2:0.6, and extruded at a pressure of 500 MPa for 300 minutes to obtain wet State honeycomb carrier finished product;
[0071] Put the wet honeycomb carrier under ventilated conditions for 48 hours, then quickly dry it with hot air at 80°C for 72 hours, and ...
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Abstract
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