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Method and apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater

A technology for catalysts and pollutants, which is applied in the field of oil-containing catalyst micropowder degreasing, and can solve problems such as cumbersome process, long process, and undeveloped degreasing method

Active Publication Date: 2015-08-12
EAST CHINA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has a long process and a cumbersome process, and it is only for the deactivated catalyst in the MTO fluidization reaction. For the catalyst micropowder entrained by the quenching water, the degreasing effect is not ideal due to its particle size characteristics and other reasons.
[0008] So far, this field has not developed a method for degreasing catalyst micropowder in MTO quenching wastewater

Method used

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  • Method and apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater
  • Method and apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater

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Embodiment 1

[0088] In a 600,000 tons / year MTO device, according to the method of the present invention, the oil-containing catalyst micropowder slurry in the pre-treated MTO quenched wastewater is deoiled, and its specific implementation process and degreasing effect are described as follows:

[0089] 1. Properties of oil-containing catalyst powder slurry:

[0090] During the normal operation of the MTO unit, the total weekly production of oil-containing catalyst micropowder slurry is 10.08 tons (dry basis), including 2.42 tons of oil.

[0091] The particle size of the catalyst micropowder is 3 μm, the water content is 3% by weight, and the oil content is 24.0% by weight (all based on catalyst weight); the specific surface area is 58m 2 / g, the pore volume is 0.019ml / g.

[0092] The oil pollutants adsorbed by the catalyst powder are mainly polymer alkanes, aromatics, ketones, esters, etc.

[0093] 2. Implementation process:

[0094] see figure 1 . With reference to the specific imple...

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Abstract

The present invention relates to a method and an apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater, and provides a method for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater. The method comprises: (1) storage regulation; (2) hydrothermal micro-cyclone desorption; and (3) wet hydrogen peroxide oxidation. The invention further provides the apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater.

Description

technical field [0001] The invention belongs to the field of coal chemical industry and environmental protection, and relates to a method and a device for degreasing oil-containing catalyst powder in MTO quenching wastewater, so as to realize the goal of purifying and recovering the catalyst from the oil-containing catalyst powder. Specifically, the present invention provides a method and device for treating oil-containing catalyst micropowder in MTO quenched wastewater by an integrated coupling process of hydrothermal micro-swirl desorption and wet hydrogen peroxide oxidation. Background technique [0002] MTO is the abbreviation of methanol to olefins. Its basic principle is to produce methanol from coal through synthesis gas, and then convert methanol into low-carbon olefins such as ethylene and propylene. Currently representative MTO technologies include: UOP, UOP / Hydro, ExxonMobil and Dalian Institute of Chemical Physics (DMTO) process technology. With the increasing d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/70
Inventor 杨雪晶王金岭李剑平张艳红汪华林刘凯隆王芊邓涛
Owner EAST CHINA UNIV OF SCI & TECH
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