Heavy alkylbenzene decolorization method

A heavy alkyl benzene, pre-decolorization technology, applied in the field of chemical decolorization, can solve the problems of difficult control of the reaction process, hydrodecolorization equipment and high energy consumption, etc., achieve good decolorization effect, high social value and ecological value, and easy decolorization effect of effect

Inactive Publication Date: 2020-04-17
琪优势化工(太仓)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the decolorizing agent used in this decolorization method is clay and activated carbon, and the adsorption is easy to reach saturation, while the hydrodecolorization equipment and energy consumption are large, and the reaction process is not easy to control, which leads to further improvement of this method.

Method used

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  • Heavy alkylbenzene decolorization method
  • Heavy alkylbenzene decolorization method

Examples

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Embodiment 1

[0044] This example provides a kind of heavy alkyl benzene decolorization method, it is characterized in that, comprises the steps:

[0045] Step S1, pre-decolorization: mix the heavy alkylbenzene with the adsorbent evenly, decolorize at a certain stirring speed and temperature for 20 minutes, then ultrasonic decolorize for 10 minutes; then filter through a plate and frame filter press to obtain the pre-decolorization weight Alkylbenzene;

[0046] Step S2, secondary decolorization: the heavy alkylbenzene decolorized in step S1 is mixed with the decolorant, and microwave treatment is carried out while stirring, and the treatment time is 10 minutes;

[0047] Step S3, ion exchange resin decolorization: decolorize the heavy alkylbenzene after the second decolorization in step S3 through ion exchange resin;

[0048] Step S4, semi-chemical adsorption: decolorize the heavy alkylbenzene decolorized by the ion exchange resin in step S3 with polyamide, and obtain heavy alkylbenzene aft...

Embodiment 2

[0059] Example 2 provides a method for decolorizing heavy alkylbenzenes, which is basically the same as Example 1, except that the adsorbent includes the following components in parts by weight: 23 parts of clay, 12 parts of sepiolite powder, 6 parts of zeolite parts, 23 parts of activated carbon, 15 parts of diatomite, and 7 parts of basic alumina; the decolorizer includes the following components in parts by weight: 12 parts of superabsorbent resin, 33 parts of activated carbon, 17 parts of vermiculite, 12 parts of silica gel 6 parts, pulp 6 parts.

Embodiment 3

[0061] Example 3 provides a method for decolorizing heavy alkylbenzenes, which is basically the same as in Example 1, except that the adsorbent includes the following components in parts by weight: 25 parts of clay, 15 parts of sepiolite powder, 8 parts of zeolite parts, 25 parts of activated carbon, 20 parts of diatomite, and 8 parts of basic alumina; the decolorizer includes the following components in parts by weight: 15 parts of superabsorbent resin, 35 parts of activated carbon, 18 parts of vermiculite, 15 parts of silica gel 8 parts, 8 parts of pulp.

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Abstract

The invention relates to a heavy alkylbenzene decolorization method, which comprises the following steps: S1, pre-decolorization; S2, secondary decolorization; S3, decolorizing with an ion exchange resin; and S4, semi-chemical adsorption. According to the invention, the heavy alkylbenzene decolorization method is simple and feasible, can economically, quickly and efficiently realize heavy alkylbenzene decolorization, does not need to use expensive catalysts and equipment, and is easy to control in process; and the invention further provides a decolorizing agent applied to the heavy alkylbenzene decolorizing method, wherein the decolorizing agent is good in decolorizing effect and high in decolorizing efficiency, can achieve good decolorizing effect at a small use amount, and is high in economic value, social value and ecological value.

Description

technical field [0001] The invention relates to the technical field of chemical decolorization, in particular to a method for decolorizing heavy alkylbenzenes. Background technique [0002] Heavy alkylbenzene is an important chemical and lubricating oil raw material. Because of its chemical structure, there are one or two long alkyl side chains, which makes heavy alkylbenzene and its derivatives have good performance in lubricating oil. Solubility properties. Therefore, heavy alkylbenzenes are often used to prepare surfactants with good oil solubility. The uses of heavy alkylbenzenes with different chain lengths are also different. Alkylbenzenes with 20-40 carbon atoms in the alkyl side chain are especially suitable for preparing lubricating oil products and lubricating oil additive products. The main raw materials of high-quality sulfonate products imported from my country are heavy alkylbenzenes with carbon chain C20-24. [0003] At present, there is no special product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/08
CPCC10G53/08C10G2300/1096C10G2300/201C10G2400/30
Inventor 黄锦堂
Owner 琪优势化工(太仓)有限公司
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