Process method of improved 13X molecular screen

A manufacturing process and molecular sieve technology, which is applied in the chemical industry, can solve the problem of low bulk density of molecular sieves, and achieve the effects of improving product performance and efficiency, stable production, and wide application

Inactive Publication Date: 2006-02-22
LUOYANG JALON MICRO NANO NEW MATERIALS CO LTD
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Problems solved by technology

[0012] In order to solve the problem of low bulk density of molecular sieves in the prior art, the purpose of the present invention is to provide an improved 13X molecular sieve manufacturing process, so that the produced molecular sieve raw powder product can reach a bulk density of ≥ 0.68g / ml, and the crystal size can reach 4-6μm, due to the increase in bulk density, the molecular sieve can be filled with a larger amount of molecular sieve in the reaction vessel of rated volume, so as to be more widely applicable to such as gas drying, purification and numerous separation processes and petroleum refining and petrochemical processes. So as to improve product performance and efficiency, meet the needs of the domestic market, and then open up the international market

Method used

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  • Process method of improved 13X molecular screen
  • Process method of improved 13X molecular screen
  • Process method of improved 13X molecular screen

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Embodiment Construction

[0041] According to the ratio of ingredients: (molar ratio)

[0042] Take Na 2 O / Al 2 o 3 3.0~4.0

[0043] SiO 2 / Al 2 o 3 2.5~3.0

[0044] h 2 O / Al 2 o 3 30~40

[0045] Synthesis: aging and crystallization According to the given process formula and process conditions, calculate the dosage of various materials, according to the order of feeding, after feeding into gel, transfer to the crystallization tank for aging, after aging, heat up and crystallize , according to the specified crystallization time, after the crystallization is completed, the material is discharged;

[0046] Filtration: Filter the synthesized slurry through a plate-and-frame filter to achieve solid-liquid separation, and recycle the remaining NaOH mother liquor, then wash with water to PH10-11, wind pressure drainage, and discharge;

[0047] Drying: Add the air-pressed filter cake to the flash drying equipment to dry and remove the wet ...

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Abstract

The disclosed preparation method with hydrothermal and Barrer non-equilibrium synthesis techniques is for improved 13X molecular sieve. Wherein, the said sieve is metastable phase; when using sodium silicate and sodium aluminate as silicon source and aluminium source separately, the silicate radical has different polymerization states, the aluminate radical and aluminosilicate radical have different structures and states; in alkaline condition, the silicate and aluminate polymerize and form crystallized glue and obtain the said sieve; wherein, the mole ratio of indredients is: Na2O/Al2O3: 3.0-4.0, SiO2/Al2O3: 2.5-3.2, H2O/Al2O3: 30-40.

Description

Technical field: [0001] The invention relates to the technical field of chemical industry, and relates to a manufacturing process method of an improved 13X molecular sieve. Background technique: [0002] At present, in the field of adsorption and separation, such as gas drying, purification and numerous separation processes; in the field of petroleum refining and petrochemical industry; in the detergent industry, more and more molecular sieve materials are used. [0003] Typical chemical composition of X-type molecular sieve: Na 2 O·Al 2 o 3 ·(2.8±0.2)SiO2 2 ·(6-7)H 2 o [0004] Molecular ratio of silicon to aluminum: Si O 2 Al 2 O 3 = 2.6 - 3.0 [0005] Effective aperture: 9-10  [0006] The structure of X-type molecular si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/22B01J20/18
Inventor 夏汉祥魏瑜伟
Owner LUOYANG JALON MICRO NANO NEW MATERIALS CO LTD
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