Nonyl phenol refining process

A nonylphenol and process technology, which is applied in the field of industrial nonylphenol refining process, can solve the problems of dinonylphenol not being used as a product, poor purity of dinonylphenol, and high phenol content, and achieve the goal of improving color stability and increasing product yield Effect
CN1970519AActive Publication Date: 2007-05-30BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2007-05-30

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Abstract

The invention discloses a refining technique to synthesize industrial nonyl phenol, which comprises the following steps: a) evaporating to remove most of phenol in the industrial nonyl phenol; obtaining evaporator bottom material; b) distilling to remove phenol; obtaining rough nonyl phenol; setting the temperature of feed material into distill tower at 70-120 deg.c and tower top temperature at 40-85 deg.c and tower autoclave temperature at 170-215 deg.c; setting the total fill pressure at 0.4-1.0Kpa; controlling the reflux rate R between 0.5 and 2; obtaining the theoretical tower boards at 6-30 blocks; c) rectifying the rough nonyl phenol to obtain refined nonyl phenol and rough dinonyl phenol; setting the feed temperature of rectifying tower at 90-130 deg.c and tower top temperature at 80-170 deg.c and tower autoclave temperature at 180-260 deg.c; setting the total fill pressure at 0.4-1.0Kpa; controlling the reflux rate R between 0.4 and 2.5; obtaining the theoretical tower boards at 4-28 blocks.
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Description

Technical field

[0001] The invention relates to a refining process for industrial nonylphenol, in particular to a refining process for industrial nonylphenol synthesized from nonene and phenol under the action of a catalyst. Background technique

[0002] Industrial nonylphenol is a combination of nonene and phenol under the action of a catalyst, but due to various reasons, industrial nonylphenol products are easy to oxidize and change color during storage or during the production of downstream products. Sometimes this discoloration process is very rapid, directly affecting the sales and use of nonylphenol. If the domestic nonylphenol product is placed at room temperature for 12 days, the color can change from 47Hazen to 500Hazen or more. The laboratory research of Shanghai Petrochemical Research Institute found that when the purity of nonylphenol is high, the phenol content is low, and the product purity is high, the color is low and the color stability is good. The decrease in c...

Claims

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