CN101798261A - New technique for decomposing oxidized liquid in production of cyclohexanone - Google Patents
New technique for decomposing oxidized liquid in production of cyclohexanone Download PDFInfo
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- CN101798261A CN101798261A CN201010103789A CN201010103789A CN101798261A CN 101798261 A CN101798261 A CN 101798261A CN 201010103789 A CN201010103789 A CN 201010103789A CN 201010103789 A CN201010103789 A CN 201010103789A CN 101798261 A CN101798261 A CN 101798261A
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Abstract
The invention relates to a new technique for decomposing oxidized liquid in the production of cyclohexanone, which is characterized in that two-section decomposition technique is adopted, namely, a set of new decomposition process flow is added and is connected with the original process flow in series; the newly added process flow is one-section decomposition process flow, and the original decomposition process flow is not changed; the oxidized liquid enters into the first section to be decomposed and then enters into the second section to be decomposed; new alkaline liquor enters from the second section and returns back to the first section to be decomposed; and waste alkali is discharged from the first section, so that the new technique of oxidized liquid fair current and new alkaline liquor reverse flow can be formed.
Description
Technical field
The present invention relates to new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production.
Background technology
Cyclohexane oxidation process is produced pimelinketone, by initial hexanaphthene cobalt salt catalyzed oxidation, the high temperature homogeneous decomposition develops into the heterogeneous decomposition of non-catalyst oxidation, low temperature afterwards, make the pimelinketone yield improve about 5%, but the content of the cyclohexyl hydroperoxide that the latter generates in oxidation reaction process is higher, therefore improve transformation efficiency and the yield that cyclohexyl hydroperoxide resolves into pimelinketone, hexalin, benzene consumes, alkaline consumption has just become key problem in technology thereby reduce.
Summary of the invention
The problem of solution required for the present invention is: new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production is provided.
Technical scheme of the present invention is: new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production is characterized in that: adopt two sections decomposition techniques, promptly increase the new decomposition process of a cover, connect with former decomposition process, newly-increased flow process is one section decomposition process, and former decomposition process is constant, and the following current of oxidation liquid enters one section decomposition, go two sections decomposition then, new alkali lye then enters by two sections, and adverse current is returned to one section decomposition, by one section waste discharge alkali, thereby form the following current of oxidation liquid, the novel process of new alkali lye adverse current.
One section decomposition process production equipment of an existing at present cover.
Utilize existing general facilities facility, the general facilities facility is complete makes full use of for water, electricity, vapour, wind etc.Effect of the present invention is: this invention technology is broken the normal procedure, and now uses the circulation alkali of big flow, improve to decompose yield, reduces the benzene consumption, alkaline consumption belongs to domestic initiation, way commonly used both at home and abroad be oil phase greater than water, this process using be that water is greater than oil phase.
By new technique for decomposing oxidized liquid in the Cyclohexanone Production of the present invention, with 60,000 tons of/year pimelinketone devices of scale is example, the decomposition yield of pimelinketone is by bringing up to 90% by 80% of former technology, and ton ketone consumption benzene drops to 980kg by 1080kg, and ton ketone consumption alkali is reduced to 350kg by 500kg.Annual by 60,000 tons of output calculating, can bring nearly 4,000 ten thousand yuan/year economic benefit.Young product waste lye is 13200 tons behind this process implementing, reduces 400 tons of CO2 emissions, and economic benefit and social benefit are very remarkable.
Description of drawings
Fig. 1 is the simple and easy flow process of new technique for decomposing oxidized liquid in the Cyclohexanone Production of the present invention.
Embodiment
Oxidation liquid decompression about 60 ℃ is laggard goes into static mixing tank 1 through being cooled to, with circulation alkali that comes self-circulation alkali pump 2 to send here and the Cobaltous diacetate catalyzer sent here by catalyst pump 3, enter decomposition tower 4 together after in static mixer 1, mixing, the high random packing of 8m is housed in the decomposition tower 4, oxidation liquid oil phase reacts under the condition that has the catalyst acetic acid cobalt to exist with buck, enter wet cyclone 5 then, after separating, oil phase removes decomposing pot 6 from 5 tops, carry secretly in this part oil phase about buck phase 12.5%-14%, in decomposing pot 6, mix with new alkali, reduce its basicity to 1.0-1.5mol/g, in two sections decomposing systems, continue to make undecomposed intact peroxide breakdown complete.
Buck after wet cyclone 5 separates enters waste lye separator 7 by the bottom, waste lye separator 7 is the buck phase that is full of entirely (only carry secretly 3% effectively) under normal condition, its outlet has two portions: a route NaOH solution circulating pump 2 is extracted out and is entered waste lye water cooler 9 with the circulation alkali from the first waste lye separator 8 of two sections decomposition, after cooling, waste lye water cooler 9 enters static mixer 1 with oxidation liquid and catalyzer 10 from 11 (E-204), so far, buck has been finished the circulation of one-period in newly-increased flow process.And another outlet of waste lye separator 7 is the discharge course of waste lye, and its discharging is subjected to the control of 8 (V-203) position, boundary.
Claims (4)
1. new technique for decomposing oxidized liquid in the Cyclohexanone Production is characterized in that: improve transformation efficiency and yield that cyclohexyl hydroperoxide resolves into pimelinketone, hexalin, thereby reduce benzene consumption, alkaline consumption.
2. new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production according to claim 1, it is characterized in that: adopt two sections decomposition techniques, promptly increase the new decomposition process of a cover, connect with former decomposition process, newly-increased flow process is one section decomposition process, former decomposition process is constant, and the following current of oxidation liquid enters one section decomposition, goes two sections decomposition then, new alkali lye then enters by two sections, adverse current is returned to one section decomposition, thereby forms the following current of oxidation liquid by one section waste discharge alkali, the novel process of new alkali lye adverse current.
3. new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production according to claim 1 and 2 is characterized in that: one section decomposition process production equipment of an existing cover increases the use of connecting with former decomposition process of the new decomposition technique of a cover again and gets final product.
4. new technique for decomposing oxidized liquid in a kind of Cyclohexanone Production according to claim 2 is characterized in that: original device has complete general facilities facility, and general facilities facilities such as water, electricity, vapour, wind are complete, can make full use of existing general facilities and implement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010103789A CN101798261A (en) | 2010-01-26 | 2010-01-26 | New technique for decomposing oxidized liquid in production of cyclohexanone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010103789A CN101798261A (en) | 2010-01-26 | 2010-01-26 | New technique for decomposing oxidized liquid in production of cyclohexanone |
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| Publication Number | Publication Date |
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| CN101798261A true CN101798261A (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010103789A Pending CN101798261A (en) | 2010-01-26 | 2010-01-26 | New technique for decomposing oxidized liquid in production of cyclohexanone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516049A (en) * | 2011-11-09 | 2012-06-27 | 南京德力菲技术咨询有限公司 | Method for decomposing cyclohexyl hydrogen peroxide and equipment thereof |
| CN107400038A (en) * | 2016-05-20 | 2017-11-28 | 中国石油化工股份有限公司 | A kind of method that cyclohexyl hydroperoxide decomposes preparing cyclohexanone and cyclohexanol |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172931A (en) * | 2006-11-01 | 2008-05-07 | 肖藻生 | Improved process for producing cyclohexanol and pimelinketone |
| CN101348287A (en) * | 2008-01-08 | 2009-01-21 | 山东洪业化工集团有限公司 | Technological process for processing waste lye produced in oxidizing cyclohexane using hydrogenation by-product steam |
-
2010
- 2010-01-26 CN CN201010103789A patent/CN101798261A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172931A (en) * | 2006-11-01 | 2008-05-07 | 肖藻生 | Improved process for producing cyclohexanol and pimelinketone |
| CN101348287A (en) * | 2008-01-08 | 2009-01-21 | 山东洪业化工集团有限公司 | Technological process for processing waste lye produced in oxidizing cyclohexane using hydrogenation by-product steam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516049A (en) * | 2011-11-09 | 2012-06-27 | 南京德力菲技术咨询有限公司 | Method for decomposing cyclohexyl hydrogen peroxide and equipment thereof |
| CN107400038A (en) * | 2016-05-20 | 2017-11-28 | 中国石油化工股份有限公司 | A kind of method that cyclohexyl hydroperoxide decomposes preparing cyclohexanone and cyclohexanol |
| CN107400038B (en) * | 2016-05-20 | 2020-08-21 | 中国石油化工股份有限公司 | Method for preparing cyclohexanone and cyclohexanol by decomposing cyclohexyl hydroperoxide |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20100811 |