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A kind of naphthol modified phenolic resin and its preparation method and application

The technology of phenolic resin and naphthol is applied in the field of naphthol modified phenolic resin and its preparation, which can solve problems such as aggravation of emulsification phenomenon, and achieve the effects of improving demulsification ability, low oil content and COD, and improving aromaticity.

Active Publication Date: 2022-04-29
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The prior art discloses a polyether crude oil demulsifier with linear alkylphenolic resin as the starting agent. This demulsifier is mainly developed for the aggravation of emulsification caused by the increasing blending ratio of inferior crude oil. It is suitable for Heavy oil demulsification

Method used

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  • A kind of naphthol modified phenolic resin and its preparation method and application
  • A kind of naphthol modified phenolic resin and its preparation method and application
  • A kind of naphthol modified phenolic resin and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The present embodiment provides a kind of preparation method of polyether demulsifier, comprises the following steps:

[0026] (1) Preparation of naphthol modified phenolic resin starter: add naphthol 5.4g, phenol 108g, 37wt% formaldehyde solution 80g in the there-necked flask successively, mix evenly with the rotating speed of 80r / mn, keep this rotating speed afterwards 1 mL of 5M hydrochloric acid was added at low temperature, and the temperature was raised to 95° C. within 20 minutes. At this temperature, a polycondensation reaction occurred at a constant temperature for 3.5 hours. After the reaction is completed, vacuum dehydration is performed to obtain a naphthol-modified phenolic resin.

[0027] (2) Naphthol modified phenolic resin 1.0g, propylene oxide 102.0g, catalyzer potassium hydroxide 0.5g are added in the autoclave successively, close reactor lid (tighten bolt and do sealing), and use nitrogen (purity is 99.5%) and purged for 2 minutes (to replace the air...

Embodiment 2

[0029] The present embodiment provides a kind of preparation method of polyether demulsifier, comprises the following steps:

[0030] (1) Preparation of naphthol-modified phenolic resin starter: add naphthol 10.8g successively in the there-necked bottle, benzocresol 108g, 37wt% formaldehyde aqueous solution 72g, mix evenly with the rotating speed of 50r / mn, then keep the 1 mL of 5M hydrochloric acid was added at a rotating speed, and the temperature was raised to 95° C. within 20 minutes. At this temperature, a polycondensation reaction took place at a constant temperature for 3.5 hours. After the reaction is completed, vacuum dehydration is performed to obtain a naphthol-modified phenolic resin.

[0031] (2) Naphthol modified phenolic resin 1.0g, propylene oxide 102.0g, catalyst potassium hydroxide 0.5g are added in the autoclave, close the lid of the autoclave (tighten the bolt and do the sealing), and use nitrogen (purity is 99.5 %) purging for 2 minutes (to replace the ai...

Embodiment 3

[0033] The present embodiment provides a kind of preparation method of polyether demulsifier, comprises the following steps:

[0034] (1) Preparation of naphthol modified phenolic resin starter: add successively naphthol 16.2g, phenol 108g, 37wt% formaldehyde aqueous solution 80g in the there-necked bottle, mix evenly with the rotating speed of 100r / mn, keep this rotating speed afterwards 2g of oxalic acid was added at low temperature, and the temperature was raised to 95°C within 20 minutes. At this temperature, the polycondensation reaction took place at a constant temperature for 3.5 hours. After the reaction is completed, vacuum dehydration is performed to obtain a naphthol-modified phenolic resin.

[0035] (2) Naphthol modified phenolic resin 1.0g, propylene oxide 102.0g, catalyzer potassium hydroxide 0.5g are added in the autoclave successively, close reactor lid (tighten bolt and do sealing), and use nitrogen (purity is 99.99%) and purging for 2 minutes (to replace the...

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Abstract

The invention discloses a naphthol modified phenolic resin, a preparation method and an application thereof. The naphthol modified phenolic resin has a structure shown in formula I wherein n is an integer of 0 to 9; its preparation method comprises the following steps: mixing naphthol, phenol, and formaldehyde in a molar ratio (0.1 to 2): (5 to 10): (6~10) Mix evenly, or replace formaldehyde with paraformaldehyde of the same quality, add catalyst hydrochloric acid and gradually raise the temperature to 70~110°C, and react at a constant temperature at this temperature for 2~5 hours, and dehydration under reduced pressure after the reaction is completed ( Paraformaldehyde does not need dehydration under reduced pressure). The invention prepares the polyether demulsifier by using the naphthol-modified phenolic resin as an initiator to enhance the force between the lipophilic group of the demulsifier and coal tar, and more aromatic ring structures can accelerate the diffusion of the demulsifier to the oil-water interface.

Description

technical field [0001] The invention relates to the oil-water separation field of coal coking and petrochemical industry, in particular to a naphthol-modified phenolic resin, a preparation method thereof and an application thereof. Background technique [0002] Coking plants generally use circulating ammonia water to cool the raw coal gas produced in the coking process, and a large amount of ammonia water and coal tar mixture will be produced at this time. Because ammonia water and coal tar are fully mixed at a relatively high temperature, some fine coal powder and coke powder particles are entrained in raw coal gas, and coal tar contains a large amount of asphaltenes, which makes coal tar and ammonia water form a relatively stable emulsion. The separation of ammonia water and coal tar generally adopts the combination of gravity sedimentation and steam heating, and the water content of coal tar is required to be reduced to below 4% after passing through the mechanized clarif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C08G8/28C08G8/10C08G8/08C10G33/04
CPCC08G65/2612C08G8/28C08G8/10C08G8/08C10G33/04
Inventor 马博文吴艳李伟林李文博李军芳
Owner CCTEG CHINA COAL RES INST
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