A safe production process for large-scale production of high-purity phosphine trihydrogen

A phosphorous trihydride, safe production technology, applied in sustainable manufacturing/processing, chemical industry, phosphine, etc., to reduce the entry of impurities
CN104058375BInactive Publication Date: 2016-02-10李达刚 +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
李达刚
Publication Date
2016-02-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a safe production process for large-scale production of high-purity phosphine trihydrogen. Aluminum phosphide and deionized water or zinc phosphide and acetic acid are used as raw materials, and sealed solid feed is used under closed reaction conditions. , Negative pressure three-stage series reactor reaction, low-temperature and low-pressure capture and purification, tail gas oxidation to remove trivalent phosphorus, and lye and activated carbon to absorb phosphorus pentoxide, which can simultaneously meet the requirements of large-scale production from the laboratory to industrialization Industrial manufacturing, control of the highly toxic substance phosphine trihydrogen in the atmosphere of the production workshop and the surrounding environment is lower than the allowable concentration, the equipment has no corrosion problems that are difficult to overcome, and the four requirements of high product purity provide a safe and reliable production for industrial production. craft.
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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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