Safe production technique for manufacturing high-purity phosphine on large scale

A technology for phosphine trihydrogen and safe production, applied in the direction of sustainable manufacturing/processing, chemical industry, phosphine, etc., to achieve the effect of reducing the entry of impurities
CN104058375AInactive Publication Date: 2014-09-24李达刚 +3
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
李达刚
Publication Date
2014-09-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a safe production technique for manufacturing high-purity phosphine on large scale. Aluminum phosphide and deionized water or zinc phosphide and acetic acid used as raw materials are subjected to sealed solid feeding, negative-pressure three-stage cascade reactor reaction, low-temperature low-pressure trapping purification, tail gas oxidation trivalent phosphorus removal, and absorption of phosphorus pentoxide by alkali liquor and activated charcoal under closed reaction conditions. The technique can simultaneously satisfy the four requirements of capability of large-scale industrial manufacturing from laboratories to industrialization, control on the virulent phosphine in air in the production workshop and surrounding environment to be lower than allowable concentration, no intricate corrosion problem in equipment, and high product purity, and provides a safe and reliable production technique for industrial production.
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Description

technical field

[0001] The present invention relates to a safe and reliable process for industrially manufacturing high-purity trihydrogen phosphine, in particular to provide a large-scale manufacturing of high-purity trihydrogen phosphine that can completely eliminate the potential safety hazards of the operation site and surrounding space for large-scale continuous manufacturing of phosphonane. Safe production process of phosphine hydride. Background technique

[0002] Phosphonane, scientific name phosphorus trihydrogen, molecular formula: PH 3 Low boiling point (-132.5°C). Highly toxic, the specific gravity of the gaseous state is close to that of air, it is very easy to cause neurotoxicity in humans, and it is spontaneously combustible and explosive. This is the main ingredient of the will-o'-the-wisps that are common in cemeteries. The allowable concentration in the air is 0.2PPM.

[0003] Phospanes are used in a wide variety of applications and are often used as a...

Claims

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