Cyclohexane oxidation decomposition liquid refinement apparatus

A refining device and decomposition liquid technology, applied in the separation/purification of carbonyl compounds, organic chemistry, etc., can solve the problems of increased by-product X oil, reduced catalyst activity, increased bed resistance, etc., to avoid emulsification and reduce sodium ions Content, the effect of reducing by-products

Inactive Publication Date: 2018-03-06
HUBEI SANNING CHEM
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Problems solved by technology

However, the properties of aldehyde and ketone by-products are similar to the product cyclohexanone, which are difficult to remove in the subsequent refining process, and the steam consumption is large; the ester by-products have side effects on the cyclohexanol dehydrogenation catalyst, and tar is easily formed on the surface of the catalyst Shaped substances reduce catalyst activity and increase bed resistance
In addition, the sodium ions in the decomposition liquid will promote the condensation of alcohol and ketone during the refining process, which will increase the by-product oil

Method used

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  • Cyclohexane oxidation decomposition liquid refinement apparatus

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention is not limited to the scope described in the embodiments.

[0019] Such as figure 1 As shown, a refining device for cyclohexane oxidative decomposition liquid includes a feed mixer 9, a saponification tower 1, a separator 2, a washing tower 3, a pretreatment tower 4, and a reflux tank 8 connected in sequence through pipelines; Including the lye mixer 10, the circulation pump 11 is connected to the separator 2 and the lye mixer 10 respectively through pipelines; the washing water pump 12 is connected to the washing tower 3 and the lye mixer 10 through pipelines;

[0020] Further, a reboiler 5 is provided outside the pretreatment tower 4 , and a closed loop is formed between the pretreatment tower 4 and the reboiler 5 .

[0021] Further, the device is also provided with a condenser 6, the top of the pretrea...

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Abstract

The invention discloses a refining device for cyclohexane oxidative decomposition liquid, which comprises a feed mixer, a saponification tower, a separator, a washing tower, a pretreatment tower, and a reflux tank which are sequentially connected through pipelines; the device also includes a lye mixer , the circulating pump is connected to the separator and the lye mixer respectively through pipelines; the washing water pump is connected to the washing tower and the lye mixer respectively through pipelines. The invention can be applied to the refining and pretreatment process of decomposition liquid in the production of cyclohexanone, reduces by-products, refines and concentrates crude alcohol and ketone, reduces the raw material consumption of the device, and can save energy and protect the environment.

Description

technical field [0001] The invention relates to an organic liquid refining device, in particular to a cyclohexane oxidation decomposition liquid refining device. Background technique [0002] In addition to producing cyclohexanol and cyclohexanone, the oxidative decomposition of cyclohexane in the cyclohexanone oxidation device also produces by-products such as esters, aldehydes, and ketones. The general treatment method is to send the decomposition liquid directly to the subsequent refining device, and rectify and separate the by-products. However, the properties of aldehydes and ketone by-products are similar to the product cyclohexanone, which are difficult to remove in the subsequent refining process, and the steam consumption is large; the ester by-products have side effects on the cyclohexanol dehydrogenation catalyst, and tar is easily formed on the surface of the catalyst Shaped substances reduce catalyst activity and increase bed resistance. In addition, the sodiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/78C07C49/403
CPCC07C45/78C07C49/403
Inventor 魏天荣潘发明薛世桃项翔
Owner HUBEI SANNING CHEM
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