Nano-deoxidant composition and its synthesis method

A synthesis method and deoxidizer technology, applied in the direction of adsorption purification/separation, foam dispersion/prevention, carbonate/acid carbonate preparation, etc., can solve the problems of increased polymerization catalyst consumption, insufficient deoxidation depth, and reduced product quality And other issues

Active Publication Date: 2006-06-14
大连圣迈化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, nickel-based hydrogenation catalysts have to be selected as substitutes for deoxidizers, so there are the following defects: first, the deoxidation depth is not enough, and the oxygen concentration in the raw material after purification is still above 2ppm, which greatly increases the cost of expensi

Method used

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  • Nano-deoxidant composition and its synthesis method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Nano MnCO 3 preparation of

[0027] Reaction formula:

[0028]

[0029] A: 0.5mol manganese carbonate is added to 30ml water, and hydrochloric acid is added dropwise at a molar ratio of 1:2;

[0030] B: Add 1.0mol ammonium bicarbonate to 250ml water; the molar ratio of manganese carbonate to ammonium bicarbonate is 1:2;

[0031] C: Add 5g polyethylene glycol (surface treatment agent) to 100ml water.

[0032] Put C into a reaction bottle equipped with high-speed stirring (with 2 dropping ports), heat up to 40°C and dissolve completely, add A and B dropwise into C at a constant speed of 1 drop / second, and stir under high speed (100-120 rpm), react at 40°C for 1 hour, filter the resulting white precipitate, wash with deionized water until there is no chloride ion, and spray dry to obtain 30-100 nanometer MnCO 3 .

[0033] Step 2: Synthesis of Nano Deoxidizer

[0034] Weigh 80 grams of surface-treated nano-MnCO 3 , 10 grams of ZnO and 10 grams of...

Embodiment 2

[0038] Step 1: Nano MnCO 3 preparation of

[0039] Reaction formula:

[0040]

[0041] A: 0.5mol manganese carbonate is added to 30ml water, and hydrochloric acid is added dropwise at a molar ratio of 1:2;

[0042] B: Add 1.0mol ammonium bicarbonate to 250ml water; the molar ratio of manganese carbonate to ammonium bicarbonate is 1:2;

[0043] C: Add 3g of polyethylene glycol (surface treatment agent) to 100ml of water.

[0044] Put C into a reaction bottle equipped with high-speed stirring (with 2 dropping ports), heat up to 40°C and dissolve completely, add A and B dropwise into C at a constant speed of 1 drop / second, and stir under high speed (100-120 rpm), react at 40°C for 2 hours, filter the resulting white precipitate, wash with deionized water until there is no chloride ion, and spray dry to obtain 30-100 nanometer MnCO 3 .

[0045] Step 2: Synthesis of Nano Deoxidizer

[0046] Weigh 90 g of nano-MnCO 3 , 15 grams of ZnO and 10 grams of Cu 2 O, 10 gr...

Embodiment 3

[0050] Step 1: Nano MnCO 3 preparation of

[0051] Reaction formula:

[0052]

[0053] A: 0.5mol manganese carbonate is added to 30ml water, and hydrochloric acid is added dropwise at a molar ratio of 1:2;

[0054] B: Add 1.0mol ammonium bicarbonate to 250ml water; the molar ratio of manganese carbonate to ammonium bicarbonate is 1:2;

[0055] C: Add 6g of polyethylene glycol (surface treatment agent) to 100ml of water.

[0056] Put C into a reaction bottle equipped with high-speed stirring (with 2 dropping ports), heat up to 40°C and dissolve completely, add A and B dropwise into C at a constant speed of 1 drop / second, and stir under high speed (100-120 rpm), react at 40°C for 3 hours, filter the resulting white precipitate, wash with deionized water until there is no chloride ion, and spray dry to obtain 30-100 nanometer MnCO 3 .

[0057] Step 2: Synthesis of Nano Deoxidizer

[0058] Weigh 100 g of nano-MnCO 3 , 15 grams of ZnO and 15 grams of Cu 2 O, 5 ...

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Abstract

A nano-class deoxidizing agent for selectively removing O2 during the synthesis of polyolefin is prepared through preparing nano-MnCO3 and proportionally adding carrier and assistant. Its advantages are high deoxidizing effect and low regenerating temp.

Description

technical field [0001] The present invention is an important technical invention in the field of polyolefin industry, specifically a nano deoxidizer composition and its synthesis method, which is applied to the production of polyethylene and polypropylene in the petrochemical industry to deeply remove impurity oxygen in ethylene and propylene. , to ensure the normal progress of the polymerization reaction and improve product quality. It can also be used in metallurgy, electronics, light industry and other fields to provide oxygen-free protective gas, carrier gas and reaction gas. Background technique [0002] In the production process of polyethylene and polypropylene, the polymerization catalyst requires deep deoxidation of ethylene and propylene to ensure production. [0003] The difficulty of olefin deoxygenation is that the double bonds in olefins should not be destroyed while deoxygenating. While introducing polyethylene technology, my country also purchased UCC-1101 ...

Claims

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Application Information

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IPC IPC(8): B01D19/04C01B32/60C07C7/12
Inventor 张涛高绪国汪光敏邱长春李景芝梁艳萍
Owner 大连圣迈化学有限公司
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