Impact-resistant and high-adsorption-capacity molecular sieve composite structure and preparation method thereof
A composite structure and molecular sieve technology, which is applied in separation methods, chemical instruments and methods, layered products, etc., can solve problems such as product cracking, easy breakage, complex heat transfer and mass transfer, etc., and achieve improved impact resistance. Forming precision, flexible methods and various effects
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[0041] A method for preparing an impact-resistant, high-adsorption molecular sieve composite structure, comprising the following steps:
[0042] S1, select upper surface plate, lower surface plate, molecular sieve adsorbent and honeycomb material;
[0043] S2. Activate the molecular sieve adsorbent;
[0044] S3, filling the activated molecular sieve adsorbent in the honeycomb pores of the honeycomb structure to obtain a honeycomb filled molecular sieve adsorbent;
[0045] S4. Laminate the upper surface plate, the honeycomb-filled molecular sieve adsorbent, and the lower surface plate in sequence, and then place them in a forming mold to obtain a molecular sieve composite structure after curing.
[0046] In some embodiments, the temperature for activating the molecular sieve adsorbent is 300° C. to 500° C., and the time is 1 hour to 10 hours.
[0047] In some embodiments, the curing is carried out in a vacuum heating environment at 60° C. to 200° C., and the curing time is 0....
Embodiment 1
[0049] According to the size requirements of the specific product, prepare the upper surface plate, the lower surface plate, molecular sieve adsorbent, and honeycomb material of appropriate size; the upper surface plate and the lower surface plate are made of porous nylon membrane, and the molecular sieve adsorbent is made of 4A molecular sieve powder (100 mesh) , The honeycomb material is aluminum honeycomb panel (wall thickness 0.1mm, hexagonal honeycomb, honeycomb hole side length 15mm, height 10mm). The 4A molecular sieve powder was activated at 350°C for 3 hours. Then, the activated 4A molecular sieve powder is filled in the honeycomb pores of the honeycomb material, and compacted by a molding machine to obtain a honeycomb-filled molecular sieve adsorbent. Place the upper surface plate, the honeycomb-filled molecular sieve adsorbent, and the lower surface plate stack in the molding mold in sequence, vacuumize and heat the molding in the molding machine, and the curing con...
Embodiment 2
[0051] According to the size requirements of specific products, prepare upper surface board, lower surface board, molecular sieve adsorbent, and honeycomb material of appropriate size; wherein the upper surface board and lower surface board adopt non-woven fiber paper, and the molecular sieve adsorbent adopts 3A molecular sieve particles (6 Hexagonal cylinder, side length 10mm, height 10mm), honeycomb material adopts aramid honeycomb panel (wall thickness 0.1mm, hexagonal honeycomb, honeycomb hole side length 10mm, height 10mm). The 3A molecular sieve particles were activated at 350°C for 6 hours. Then the activated 3A molecular sieve particles are filled in the honeycomb pores to obtain the honeycomb filled molecular sieve adsorbent. Place the upper surface plate, the honeycomb-filled molecular sieve adsorbent, and the lower surface plate laminate in the forming mold in sequence, heat and form in a vacuum bag, and the curing condition is 90°C for 2 hours. After curing, the mo...
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