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A kind of method for treating waste lye of cyclohexanone plant

A technology of cyclohexanone and waste lye, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., to achieve the effect of resource utilization and cost reduction

Active Publication Date: 2011-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the use of chemical wastewater to prepare additives for coal-water slurry

Method used

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  • A kind of method for treating waste lye of cyclohexanone plant
  • A kind of method for treating waste lye of cyclohexanone plant
  • A kind of method for treating waste lye of cyclohexanone plant

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Take 100mL of cyclohexanone waste lye, add 4~9g of sodium sulfite to it, dissolve and heat to 40°C, add 10mL of acetone, react for 30min, then heat up to 80°C, add 20mL of formaldehyde solution, continue to react for 1h, keep Add 950 parts of waste lye of cyclohexanone plant at high temperature, and react for 1 hour to make the composite coal-water slurry additive with an effective concentration of 0.5%; naturally cool to room temperature, and its different molecular weight distribution curves are as follows: figure 1 As shown, the molecular weight of the product decreases significantly with the increase of the amount of sulfonating agent. Wherein the occurrence of sodium sulfite being 4g causes the hydrophilicity of the product to decrease due to insufficient sulfonation, forming a light yellow insoluble matter. The non-sticky coal is ground by a ball mill to obtain coal powder with a mass percentage of particles with an average particle size of less than 75 μm greater...

Embodiment 2

[0072] Take 100mL of cyclohexanone waste lye, add 5g of sodium sulfite to it, dissolve and heat to 40°C, add 6-14mL of acetone, react for 30min and then heat up to 80°C, add 20mL of formaldehyde solution, continue to react for 1h, keep Add 950 parts of waste lye of cyclohexanone plant at high temperature, and react for 1 hour to make the composite coal-water slurry additive with an effective concentration of 0.5%; naturally cool to room temperature, and its different molecular weight distribution curves are as follows: figure 2 As shown, with the increase of the amount of acetone, the molecular weight of the product first increases and then decreases. When the amount of acetone is small, the molecular weight may be small due to excessive sulfonation, and the initial reaction rate is low; and when the amount of acetone is large, the reaction rate is too fast, and the large ketone-aldehyde ratio is likely to cause a reduction in the degree of polymerization, so that Molecular w...

Embodiment 3

[0074] Take 100mL of cyclohexanone waste lye, add 5g of sodium sulfite to it, dissolve and heat to 40°C, add 10mL of acetone, react for 30min and then heat up to 80°C, add 12-24mL of formaldehyde solution, continue the reaction for 1h, keep Add 950 parts of waste lye of cyclohexanone plant at high temperature, and react for 1 hour to make the composite coal-water slurry additive with an effective concentration of 0.5%; naturally cool to room temperature, and its different molecular weight distribution curves are as follows: image 3As shown, with the increase of the amount of formaldehyde, the molecular weight distribution of the product has a greater impact. The non-sticky coal is ground by a ball mill to obtain coal powder with a mass percentage of particles with an average particle size of less than 75 μm greater than 80%. The composite coal-water slurry additive obtained by reacting 20ml of formaldehyde and the non-sticky coal powder are in a mass ratio of 38:62 After prep...

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Abstract

The invention relates to a method for treating waste alkali liquor of a cyclohexanone device. The method comprises the following steps of: 1, adding 0.2-0.4 part of sulfonating agent into 50 parts of waste alkali liquor of the cyclohexanone device with pH of 9-13 in molar ratio; 2, adding 1-2 parts of acetone or acrylic acid compound into the waste alkali liquor of the cyclohexanone device to perform acetone sulfonation reaction; 3, adding 2-4 parts of aldehyde compound or ethylene oxide into the waste alkali liquor of the cyclohexanone device to perform condensation polymerization reaction; and 4, then adding 450-950 parts of the waste alkali liquor of the cyclohexanone device and continuously performing the condensation polymerization reaction of the step 3 to prepare a composite coal water slurry additive at effective concentration of 0.5-1 percent. By adopting the method, the coal water slurry additive and coal water slurry are obtained by using an organic synthesis method after the waste alkali liquor of the cyclohexanone device is properly and chemically treated, so that the environment is prevented from being polluted by discharge of the waste alkali liquor of the cyclohexanone device, the cost of the coal water slurry additive is effectively reduced, and recycling of the waste alkali liquor of the cyclohexanone device is realized.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a method for treating waste lye of a cyclohexanone plant. In particular, it refers to a method for obtaining composite coal-water slurry from waste lye of a cyclohexanone plant. Background technique [0002] The chemical industry is a traditional pillar industry in my country. The important chemical raw materials and products produced are widely used in national defense, printing and dyeing, plastics, pesticides and pharmaceutical industries. With the rapid development of the national economy, my country's chemical industry has also entered a period of rapid development. The level of equipment and technology has been significantly improved, and the production process and equipment have been continuously updated. At the same time, the total amount of wastewater discharged by the chemical industry has also continued to rise. The rapid development of the chemical industry has bro...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/24C02F9/04
Inventor 李正琪万国晖卢姝程学文
Owner CHINA PETROLEUM & CHEM CORP
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