Method of producing polyaluminum chloride with wasted anthraquinone regeneration agent

A polyaluminum chloride and regeneration agent technology, applied in the chemical field, can solve the problems of complex production process and high cost, and achieve the effects of simple process, improved efficiency and accelerated dissolution

Active Publication Date: 2017-10-24
GUANGXI XINJING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method has complex production process and high cost

Method used

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  • Method of producing polyaluminum chloride with wasted anthraquinone regeneration agent
  • Method of producing polyaluminum chloride with wasted anthraquinone regeneration agent
  • Method of producing polyaluminum chloride with wasted anthraquinone regeneration agent

Examples

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Embodiment 1

[0032] The method of utilizing waste anthraquinone regeneration agent of the present invention to prepare polyaluminum chloride comprises the following steps:

[0033] A, 500g discarded anthraquinone regeneration agent is mixed with 50g activated carbon and then ground into 500 mesh fine powder, and 100g diesel oil is added, and the mixture is obtained after fully stirring; the anthraquinone regeneration agent is sodium hydroxide supported on activated alumina balls;

[0034] B. Pass the mixture obtained in step A into air at 700°C for aerobic roasting for 3 hours, so that the combustion agent is burned, and then the activated carbon is burned to generate heat to decompose the remaining impurities, and the roasted material is obtained after the combustion is complete;

[0035] C. Under 3 atmospheric pressures, mix the calcined material in step B with 25% hydrochloric acid in a molar ratio of 1:5, and perform a stripping reaction for 1 h to strip the alumina to obtain a strippin...

Embodiment 2

[0038] The method of utilizing waste anthraquinone regeneration agent of the present invention to prepare polyaluminum chloride comprises the following steps:

[0039] A. Mix 600g of discarded anthraquinone regeneration agent with 100g of activated carbon and grind it into a 300-mesh fine powder, add 200g of gasoline, and stir thoroughly to obtain the mixture; the anthraquinone regeneration agent is sodium hydroxide supported on activated alumina balls;

[0040] B. Pass the mixture obtained in step A into oxygen at 750°C for aerobic roasting for 2 hours, so that the combustion agent is burned, and then the activated carbon is burned to generate heat to decompose the remaining impurities, and the roasted material is obtained after the combustion is complete;

[0041] C. Under 4 atmospheric pressures, the calcined material in step B is mixed with 30% hydrochloric acid in a molar ratio of 1: 4.5 by mass fraction, and the stripping reaction is carried out for 6 hours to strip the a...

Embodiment 3

[0044] The method of utilizing waste anthraquinone regeneration agent of the present invention to prepare polyaluminum chloride comprises the following steps:

[0045] A, 600g discarded anthraquinone regeneration agent is mixed with 150g activated carbon and ground into 200-mesh powder, sprayed with 300g kerosene, and fully stirred to obtain the mixture; the anthraquinone regeneration agent is sodium hydroxide supported on activated alumina balls;

[0046] B. Pass the mixture obtained in step A into air at 650°C for aerobic roasting for 4 hours, so that the combustion agent is burned, and then the activated carbon is driven to burn, generating heat to decompose the remaining impurities, and the roasted material is obtained after the combustion is complete;

[0047] C. Under 6 atmospheric pressures, mix the calcined material in step B with 37.5% hydrochloric acid in a molar ratio of 1:6 in mass fraction, and carry out a stripping reaction of 6 hours to strip out alumina to obtai...

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Abstract

The invention discloses a method of producing polyaluminum chloride with a wasted anthraquinone regeneration agent. The method includes the steps of: a) mixing the wasted anthraquinone regeneration agent with activated carbon, grinding the mixture into fine powder, adding a combustion agent, and fully stirring the materials to obtain a mixture; b) performing aerobic roasting to the mixture in the step a) to obtain a roasted material; c) mixing the roasted material with hydrochloric acid to dissolve-out the aluminum oxide to obtain a dissolving-out solution; d) slowly adding hydrochloric acid dropwise to the dissolving-out solution, uniformly stirring the solution, after the hydrochloric acid is all added, adding a NaOH solution to regulate the pH value, and performing hydrolytic polymerization aging to obtain a polyaluminum chloride solution; and e) diluting and filtering the polyaluminum chloride solution, evaporating and concentrating the solution, and drying the solution to obtain solid polyaluminum chloride. The method has simple process and fewer steps, is low in investment and cost, and has promoting significance.

Description

technical field [0001] The invention belongs to the field of chemistry, and specifically relates to a method for preparing polyaluminum chloride by utilizing waste anthraquinone regeneration agent. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide, is one of the main basic products in the chemical industry. Because hydrogen peroxide is decomposed as an oxidant, it only produces oxygen and water, and has no secondary pollution to the environment. It is a "green" oxidant, so it is widely used in various fields of the national economy. The anthraquinone method is currently the main method for the industrial production of hydrogen peroxide. Alkyl anthraquinones are dissolved in organic solvents to prepare working fluids. The working fluids are converted into alkylhydroanthraquinones by hydrogenation under the action of a supported hydrogenation catalyst, and then oxidized and converted into alkyls under the action of pure oxygen or air. Anthraqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56C02F1/52
CPCC01F7/56C02F1/5236
Inventor 郭子添阮恒黄尚顺韦少平黄青则王秋萍黄世勇黄媚
Owner GUANGXI XINJING TECH
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