Deaminizing agent and preparation method thereof

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

Inactive Publication Date: 2011-03-02
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

[0029] Weigh 100g of NaZSM-5 molecular sieve raw powder, put in 1000mL of NH with a concentration of 0.2mol / L 4 NO 3 The solution was exchanged at 60°C for 10 hours, taken out, filtered, washed with water, and dried in an oven at 120°C for 6 hours; then mixed with 70g of silica sol (containing SiO 2 20%) kneading and extruding, drying in an oven at 110°C for 15 hours, and roasting at 500°C for 10 hours in the hollow atmosphere of a muffle furnace to prepare a deamination / amine agent A.

[0030]

Embodiment 2

[0032] Weigh 100g of powdered stilbite, put into 500mL of NH with a concentration of 1.0mol / L 4 Exchange in Cl solution for 25 hours at 30°C, take out, filter, wash with water, and dry in an oven at 100°C for 16 hours; then mix with 150g of sodium silicate aqueous solution (containing SiO 2 28%) kneading and extruding, drying in an oven at 110°C for 20 hours, and roasting at 600°C for 5 hours in the hollow atmosphere of a muffle furnace to prepare a deamination / amine agent B.

[0033]

Embodiment 3

[0035] Weigh 100g of NaY molecular sieve raw powder, put in 1000mL of NH with a concentration of 0.5mol / L 4 NO 3 The solution was exchanged at 70°C for 10 hours, taken out, filtered, washed with water, and dried in an oven at 80°C for 16 hours; then mixed with 42g of clay and extruded to shape, dried in an oven at 140°C for 5 hours, and placed in a muffle furnace under the hollow atmosphere Roasting at 500°C for 10 hours produces a deamination / amine agent C.

[0036] The deamination / amine agent was prepared using the same raw materials as in Example 3, and Examples 4-7 with different parameters are shown in Table 1 below.

[0037] Table 1

[0038]

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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 adsorbentis 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 an ammonia / amine removal agent and a preparation method thereof, belonging to the technical field of industrial wastewater or waste gas treatment. Background technique [0002] In the process of chemical production, some gases or liquids containing ammonia (or amine) are often produced. For example, the by-produced hydrogen in the hydrocracking unit of the refinery contains about 1-10ppm of NH 3 , if this part of hydrogen is released, it will not only waste resources, but also cause environmental pollution, but due to the NH contained in it 3 It is harmful to downstream catalysts, such as catalytic reforming catalysts, and cannot be used directly. NH 3 It can only be used in the production process when the content is reduced to less than 0.5ppm, and it is difficult to meet this requirement with conventional methods; another example is that aromatics are important chemical raw materials, and industrial aromatics mainly come fro...

Claims

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Application Information

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