High-adsorption-capacity oxygen generation molecular sieve and preparation method thereof

A molecular sieve and high-adsorption technology, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problems affecting the separation effect and low adsorption capacity of pressure swing adsorption oxygen production equipment, and achieve excellent nitrogen and oxygen separation system performance, high adsorption capacity, The effect of a wide range of raw material sources

Inactive Publication Date: 2016-10-05
MINGGUANG FEIZHOU NEW MATERIAL
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Problems solved by technology

At present, there are many kinds of molecular sieves used in pressure swing adsorption oxygen generators on the market, but most of them h

Method used

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Embodiment Construction

[0015] A molecular sieve with high adsorption capacity for oxygen production, made of the following raw materials (kg): halloysite 23, sepiolite 18, diatomite 33, wollastonite 20, potassium feldspar 18, spodumene 12, Albite 10, sodium hydroxide 54, sodium metaaluminate 39, sodium silicate nonahydrate 32, seed crystal directing agent 17;

[0016] The preparation method of described seed directing agent is as follows: a, get the raw material of following weight (kg): diatomite 24, halloysite 18, wollastonite 16, sodium metasilicate nonahydrate 30, sodium hydroxide 19, Sodium metaaluminate 11; b. Mix diatomite, halloysite and wollastonite evenly, calcinate at 590°C for 1 hour, cool naturally to room temperature, and follow the solid-to-liquid ratio of 1:14 with a molar concentration of 2mol / L mixed sulfuric acid solution, heated to 80°C in a water bath, kept warm for 30min, filtered, washed, dried, calcined at 840°C for 1.5h, naturally cooled to room temperature, pulverized, grou...

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Abstract

The invention discloses a high-adsorption-capacity oxygen generation molecular sieve and a preparation method thereof. The molecular sieve is prepared from, by weight, 18-29 parts of halloysite, 13-21 parts of sepiolite, 28-36 parts of diatomite, 15-25 parts of wollastonite, 14-22 parts of potassium feldspar, 10-15 parts of spodumene, 8-14 parts of albite, 48-62 parts of sodium hydroxide, 32-44 parts of sodium metaaluminate, 24-36 parts of sodium metasilicate nonahydrate and 15-20 parts of seed crystal guide agent. The molecular sieve prepared by the method is high in nitrogen balance adsorption capacity which can reach higher than 30 ml/g, and has excellent mechanical strength and nitrogen-oxygen separation performance; a production process is simple, raw materials are extensive in source, and the molecular sieve is low in cost, renewable, reusable, environment-friendly and economical and can be popularized and applied in pressure-variable adsorption oxygen generators on a large scale.

Description

technical field [0001] The invention relates to a molecular sieve and a preparation method thereof, in particular to a molecular sieve with high adsorption capacity for oxygen production and a preparation method thereof. Background technique [0002] In recent years, due to the development and utilization of molecular sieve adsorbents for oxygen production and the continuous improvement of process flow, pressure swing adsorption oxygen production technology has developed rapidly. The pressure swing adsorption air separation oxygen production process has the characteristics of short start-up time, short construction period, low operating cost, high degree of automation, simple maintenance, and low comprehensive energy consumption. It is widely used in iron and steel, nonferrous metallurgy, chemical industry, furnace energy saving, and environmental protection. , glass, paper, medical and other fields. [0003] As we all know, molecular sieve adsorbent is the key core of pres...

Claims

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Application Information

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IPC IPC(8): C01B39/04
CPCC01B39/04C01P2006/11
Inventor 吴佳蕾顾文宇
Owner MINGGUANG FEIZHOU NEW MATERIAL
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