Deaminizing agent and preparation method thereof

A technology for removing ammonia and adhesives, applied in chemical instruments and methods, other chemical processes, silicates, etc., can solve the problems of low ammonia capacity, unfavorable long-term repeated use, easy loss of adsorption components, etc., and achieve ammonia capacity Enhancement, high strength effect

Inactive Publication Date: 2013-03-13
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this adsorbent is that the ammonia capacity is low, and because the adsorbed components are easily lost, it is not conducive to long-term repeated use

Method used

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  • Deaminizing agent and preparation method thereof
  • Deaminizing agent and preparation method thereof
  • Deaminizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 100g of the original NaZSM-5 molecular sieve powder, and put it into 1000mL of 0.2mol / L NH 4 NO 3 Exchange the solution at 60°C for 10 hours, take it out, filter, wash with water, and dry in an oven at 120°C for 6 hours; then mix with 70g silica sol (containing SiO 2 20%) kneaded and extruded into a strip, dried in an oven at 110°C for 15 hours, and calcined in a muffle furnace at 500°C for 10 hours to obtain a deamination / amine agent A.

Embodiment 2

[0024] Weigh 100g of powdered stilbite and put in 500mL of NH with a concentration of 1.0mol / L 4 Exchange the Cl solution at 30°C for 25 hours, take it out, filter, wash with water, and dry it in an oven at 100°C for 16 hours; then mix with 150g sodium silicate aqueous solution (containing SiO 2 28%) kneaded and extruded into a strip, dried in an oven at 110°C for 20 hours, and calcined in a muffle furnace at 600°C for 5 hours to obtain a deamination / amine agent B.

Embodiment 3

[0026] Weigh 100g of NaY molecular sieve powder, and put it in 1000mL of NH with a concentration of 0.5mol / L 4 NO 3 The solution was exchanged at 70°C for 10 hours, filtered, washed with water, dried in an oven at 80°C for 16 hours; then mixed with 42g of clay and extruded into a shape, dried in an oven at 140°C for 5 hours, and then dried in a muffle furnace in a hollow atmosphere. A deamination / amine agent C can be obtained by calcining at 500°C for 10 hours.

[0027] The same raw materials as in Example 3 were used to prepare the deamination / amine agent. Examples 4-7 with different other parameters are shown in Table 1 below.

[0028] Table 1

[0029]

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PUM

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Abstract

The invention relates to a deaminizing agent and a preparation method thereof. The preparation method comprises the following steps: mixing and molding aluminosilicate and adhesive in the dry basis weight ratio of 90:10-70:30, and carrying out ion exchange with ammonium salt water solution to obtain the deaminizing agent. The deaminizing agent comprises the following raw materials in percentage by weight: 10-90% of SiO2, 5-10% of Al2O3 and 0.5-10% of MxO. The content of ammonia is greatly increased to higher than 10%, the degree of purification is lower than 0.3 ppm, the strength of adsorbent is very high, the phenomenon of efflorescence does not occur in the use process, and in addition, the adsorbent is reproducible and can be used for a long time.

Description

Technical field [0001] The invention relates to a deamination / amine agent and a preparation method thereof, and belongs to the technical field of industrial wastewater or waste gas treatment. Background technique [0002] In the chemical production process, some gases or liquids containing ammonia (or amine) are often produced. For example, the by-product hydrogen in the hydrocracking unit of a refinery contains about 1-10 ppm of NH 3 , If this part of hydrogen is discharged, it will not only waste resources, but also cause environmental pollution, but due to the NH contained in it 3 Poison to downstream catalysts, such as catalytic reforming catalysts, and cannot be used directly. NH must be 3 It can be used in the production process only when the content is reduced to less than 0.5ppm, and it is difficult to meet this requirement by conventional methods; another example is aromatics are important chemical raw materials, and industrial aromatics mainly come from coal tar by-produc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/30B01D53/02
Inventor 房德仁张慧敏
Owner YANTAI UNIV
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