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Treatment method of waste aluminum oxide in anthraquinone process hydrogen peroxide production process

An anthraquinone method hydrogen peroxide, production process technology, applied in the field of waste alumina solid waste treatment, can solve the problems of large energy consumption, high cost, generation of hazardous waste and the like, and achieves the effect of wide selection range and low energy consumption

Active Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For production enterprises, the alumina pellets containing organic solvents are regarded as hazardous waste, and the process of transfer treatment and the cost of consumption are the most difficult problems.
Taking a set of 27%wt hydrogen peroxide plant with an annual output of 260,000 tons as an example, the production of waste alumina pellets is about 1,200 tons / year, and the cost of handing over to a professional hazardous waste treatment institution is about 3,000 yuan / ton, which is very expensive
For hazardous waste treatment enterprises, whether the above-mentioned treatment methods are high-temperature roasting or acid-base treatment, there are problems such as incomplete calcination, causing environmental risks of emission of polluting gases, large energy consumption, and generation of new hazardous waste.

Method used

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  • Treatment method of waste aluminum oxide in anthraquinone process hydrogen peroxide production process
  • Treatment method of waste aluminum oxide in anthraquinone process hydrogen peroxide production process
  • Treatment method of waste aluminum oxide in anthraquinone process hydrogen peroxide production process

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Embodiment 1

[0020] (1) The waste alumina pellets from the hydrogen peroxide production process unit are sent into the waste alumina silo;

[0021] (2) The adjustable feeding device (vibration feeder, belt scale, rotor scale) continuously, uniformly and quantitatively sends the alumina pellets to the center of the grinding disc of the mill, and evenly spreads them to the grinding roller and grinding disc under the action of centrifugal force In the crushing area between the grinding rollers, the materials are quickly crushed by the strong roller pressure and grinding force of the grinding rollers. The crushed materials form a material bed of a certain thickness between the grinding rollers and the grinding disc for intergranular grinding; the materials reaching a certain fineness are produced by The strong airflow generated by the air induction system is brought to the upper classification area integrated with the mill for classification and extraction. The qualified fine powder enters the ...

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Abstract

The invention discloses a treatment method of waste aluminum oxide in an anthraquinone process hydrogen peroxide production process. The waste aluminum oxide is added into raw materials of a coal gasification process, then the waste aluminum oxide is sent to a gasification furnace to generate a gasification reaction, organic components in the waste aluminum oxide react to generate carbon monoxideand hydrogen, and inorganic components are discharged along with a gasification device slag system. According to the method, the waste aluminum oxide is added into feed coal of the coal gasification process, through combined use of a hydrogen peroxide device and the coal gasification device, hazardous wastes (waste aluminum oxide pellets) are harmlessly treated, meanwhile, carbon monoxide and hydrogen generated by the reaction can be used as components of coal gas, and win-win benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment of waste alumina, and relates to a treatment method of waste alumina in the production process of hydrogen peroxide by anthraquinone method. Background technique [0002] At present, the main method of industrial production of hydrogen peroxide is the anthraquinone method, and 2-ethylanthraquinone EAQ is used as a carrier, which is degraded due to side reactions during the reaction process, resulting in a decrease in the effective anthraquinone content in the working fluid, and the peroxidation Hydrogen production and quality decrease. Activated alumina has the properties of regenerating degradation products and improving the quality of working fluid, and is widely used in the production of hydrogen peroxide by anthraquinone method. However, after a period of operation, the activated alumina industry is slowly filled or blocked by anthraquinone, trioctyl phosphate, aromatic hydrocar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C10J3/00C10J3/76
CPCB09B3/00C10J3/00C10J3/76C10J2300/0946C10J2300/093
Inventor 王贵顺宋星星何建辉叶莲祥胡元旭马芳刘志强
Owner CHINA PETROLEUM & CHEM CORP
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