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Process for activating and regenerating nitrogen-preparing carbon molecular sieves

A technology of carbon molecular sieve and molecular sieve, which is applied in the field of carbon molecular sieve activation and regeneration technology for nitrogen production, can solve the problems of poor nitrogen production effect of carbon molecular sieve, blockage of carbon molecular sieve pores, loss of nitrogen production function, etc., and achieves simple method, energy saving, The effect of improving quality and yield

Active Publication Date: 2012-01-18
湖州强大分子筛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon molecular sieves for nitrogen production are prone to dust, alumina, oil stains, etc. during use, resulting in blockage of carbon molecular sieve pores, which is the so-called carbon molecular sieve poisoning. Poisoned carbon molecular sieves have poor nitrogen production effects, and even completely lose the nitrogen production function.
At present, there is no nitrogen-producing carbon molecular sieve recycling project at home and abroad. If this gap can be filled, it will not only bring considerable economic benefits to the enterprise, but also respond to the country's call for sustainable development, reduce environmental pollution, and save energy.

Method used

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  • Process for activating and regenerating nitrogen-preparing carbon molecular sieves
  • Process for activating and regenerating nitrogen-preparing carbon molecular sieves
  • Process for activating and regenerating nitrogen-preparing carbon molecular sieves

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Embodiment one. The activation and regeneration process of nitrogen-producing carbon molecular sieves is produced according to the following steps:

[0028] a. Cleaning treatment of poisoned carbon molecular sieve: screen the poisoned carbon molecular sieve through a 24-mesh sieve, and then place the screened poisoned carbon molecular sieve in water for full cleaning to remove alumina and dust in the poisoned carbon molecular sieve to obtain product A; b. 2. Nitrogen-based high-temperature carbonization: place the poisoned carbon molecular sieve cleaned in step a in the furnace, and heat up to 800°C under nitrogen protection for carbonization to obtain the regenerated nitrogen-producing carbon molecular sieve B product; c. Screening and packaging, The environment for screening and packaging is 20% humidity, and the carbon molecular sieve obtained through screening is 35 mesh, and the carbon molecular sieve is packed in a plastic barrel, sealed and stored to obtain a fin...

Embodiment 2

[0029] Embodiment two. The activation and regeneration process of nitrogen-producing carbon molecular sieves is produced according to the following steps:

[0030] a. Cleaning treatment of poisoned carbon molecular sieve: screen the poisoned carbon molecular sieve through a 24-mesh sieve, and then place the screened poisoned carbon molecular sieve in water for full cleaning to remove alumina and dust in the poisoned carbon molecular sieve to obtain product A; b. . Nitrogen-based high-temperature carbonization: place the poisoned carbon molecular sieve cleaned in step a in the converter furnace, and raise the temperature to 750°C for carbonization under nitrogen protection to obtain product B; c. High-temperature nitrogen-based activation: to 730°C Water vapor is passed into the converter furnace to activate the B product to obtain the regenerated nitrogen-producing carbon molecular sieve C product; d, screening and packaging, the environment for screening and packaging is 20% ...

Embodiment 3

[0031] Embodiment three. The activation and regeneration process of nitrogen-producing carbon molecular sieves is produced according to the following steps:

[0032] a. Cleaning treatment of poisoned carbon molecular sieves: screen poisoned carbon molecular sieves to obtain 24 mesh carbon molecular sieves, and then place the screened poisoned carbon molecular sieves in clear water for full cleaning to remove alumina and dust in poisoned carbon molecular sieves; b, nitrogen base High-temperature carbonization: place the poisoned carbon molecular sieve cleaned in step a in the furnace of the converter, and raise the temperature to 700°C under nitrogen protection for carbonization; c, high-temperature nitrogen-based activation: pass water vapor into the furnace at 730°C , to activate the carbon molecular sieve; it also needs to include d. Nitrogen-based high-temperature repair and regeneration. The product after high-temperature nitrogen-based activation is placed in a converter ...

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Abstract

The invention discloses a process for activating and regenerating nitrogen-preparing carbon molecular sieves. The process comprises the following production steps: a, cleaning poisoned carbon molecular sieves; b, drying a nitrogen base at high temperature; and c, carbonizing the nitrogen base at high temperature. The process has the advantages that the process recovers the poisoned carbon molecular sieves and obtains the good-quality carbon molecular sieves through an activating-regenerating production process compared with the prior art. No projects for activating and regenerating nitrogen-preparing carbon molecular sieves exist at home and abroad, and the process activates and regenerates poisoned, ineffective or waste nitrogen-preparing carbon molecular sieves, thereby filling in blanks at home and abroad. Working procedures, temperature, the number of meshes and other parameter combination are results obtained by applicants through repeated test, comparison, induction and summarization. The process is simple in method but significant in effects. Through the treatment of the process, the poisoned carbon molecular sieves can reach or exceed Q / QMS02-2009 enterprise standards of nitrogen-preparing carbon molecular sieves.

Description

technical field [0001] The invention relates to nitrogen-producing carbon molecular sieves, in particular to an activation and regeneration process for nitrogen-producing carbon molecular sieves. Background technique [0002] Nitrogen-making carbon molecular sieve is a new type of activated carbon that almost only contains uniform micropores with a diameter of several angstroms. This pore characteristic can endow the carbon molecular sieve with selective adsorption performance according to its pore size and the molecular size and shape of the gas to be adsorbed. Taking advantage of this feature, nitrogen-producing carbon molecular sieves are widely used in various gas separation processes. Carbon molecular sieve for nitrogen production is easy to encounter dust, alumina, oil stains, etc. during use, which will cause the pores of carbon molecular sieve to be blocked, that is, the so-called carbon molecular sieve poisoning. The poisoned carbon molecular sieve has poor nitroge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01J20/20
Inventor 吴会荣
Owner 湖州强大分子筛科技有限公司