Hydroxylamine-oximation circulatoing system

A circulatory system and hydroxylamine technology, applied in the preparation of hydroxylamine and oxime, organic chemistry, etc., can solve problems such as unfavorable overall reaction, difficult removal of organic pollutants, corrosion of contact materials, etc.
CN101224880AActive Publication Date: 2008-07-23CHINA PETROCHEM DEVMENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROCHEM DEVMENT
Publication Date
2008-07-23

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Abstract

The invention provides a hydroxylamine-oximation circulating system, which includes: (a)a hydroxylamine reaction zone; (b) an oximation reaction zone; (c) a decontamination area; and (d) a regulation area with a nitric acid absorber; only part of the inorganic treatment fluid used by the reaction system enters the nitric acid absorber in the regulation area to supplement the nitrate ion, and is mixed with the residual inorganic treatment fluid after the composition is adjusted, so the loss proportion of the hydroxylamine by the decomposition in the inorganic treatment fluid can be reduced. Furthermore, the decontamination area of this system can effectively remove the high boiling point organic pollutant in the inorganic treatment fluid, thus avoiding the catalyst needed by the hydroxylamine reaction from being poisoned, reducing the activity of the catalyst and the selectivity of the hydroxylamine reaction, and being more beneficial to the production of high concentration hydroxylamine.
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Description

technical field

[0001] The invention relates to a hydroxylamine-oximation circulation system, in particular to a hydroxylamine-oximation circulation system for producing high-concentration hydroxylamine phosphate. Background technique

[0002] The production of hydroxylamine in the industry is usually combined with other treatment methods for recycling, such as the hydroxylamine-oximation cycle system, which uses phosphate as the inorganic treatment liquid, and uses nitric acid and hydrogen as raw materials to reduce nitrate ions to Hydroxylamine, the formed hydroxylamine is then oximated with cyclohexanone to form cyclohexanone oxime. Add nitric acid or absorb nitrous gas to the phosphate inorganic treatment solution after the oximation reaction to form nitric acid to increase the content of the required nitrate ion, and then enter the hydroxylamine reactor to prepare hydroxylamine. The reaction is shown in the following formula:

[0003] Hydroxylamine reaction to produce...

Claims

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