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The preparation method of sulfonate flotation agent

A sulfonate and flotation agent technology, which is applied in flotation, solid separation, etc., can solve the problems of increasing costs, and achieve the effects of simple preparation process, wide and easy-to-obtain raw materials, and excellent flotation performance

Active Publication Date: 2019-10-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this method, not only the by-product polysulfosulfonic acid is not utilized, but also the emission involves environmental protection issues. At the same time, the formula is added with other organic chemical reagents in a ratio of 3:1, which increases the cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The paraffinic base often uses third-line distillate oil as the raw material.

[0032]Sulfonate the paraffin-based normal third-line distillate oil and gaseous sulfur trioxide according to conventional techniques. The sulfonated acidic oil is left to settle and stratify. After settling, the upper layer is acidic oil containing pure sulfonic acid, and the lower layer is viscous polysulfonic acid with higher density. The acidic oil containing pure sulfonic acid in the upper layer is neutralized with 20% sodium hydroxide aqueous solution, the neutralization temperature is at room temperature, and stirred slowly until the pH value reaches 7. , until the interface between the upper and lower phases is clear and the layers are clear. The upper layer is the sulfonated raffinate oil, and the lower layer is the sulfonate aqueous solution. The lower layer of the sulfonate aqueous solution is released and concentrated until the appearance is viscous and there is no obvious moist...

Embodiment 2

[0034] Paraffin-based minus first-line distillate oil is used as raw material.

[0035] Sulfonation of paraffin-minus-line distillates with gaseous sulfur trioxide. The sulfonated acidic oil is left to settle and stratify. After settling, the upper layer is acidic oil containing pure sulfonic acid, and the lower layer is viscous polysulfonic acid with higher density. The acidic oil containing pure sulfonic acid in the upper layer is neutralized with 20% aqueous sodium hydroxide solution at a neutralization temperature of 40°C, and stirred slowly until the pH value reaches 7. Pour the mixed solution into a separatory funnel, and then put The oven is kept warm and layered until the interface between the upper and lower phases is clear and the layers are clear. The upper layer is the sulfonated raffinate oil, and the lower layer is the sulfonate aqueous solution. The lower layer of the sulfonate aqueous solution is released and concentrated until the appearance is viscous and t...

Embodiment 3

[0037] Paraffin-based minus second-line distillate oil is used as raw material.

[0038] Sulfonation of paraffin-based minus second-line distillate oil with gaseous sulfur trioxide. The sulfonated acidic oil is left to settle and stratify. After settling, the upper layer is acidic oil containing pure sulfonic acid, and the lower layer is viscous polysulfonic acid with higher density. The acidic oil containing pure sulfonic acid in the upper layer is neutralized with 15% aqueous sodium hydroxide solution at a neutralization temperature of 50°C, and stirred slowly until the pH value reaches 7. Pour the mixed solution into a separatory funnel, and then put The oven is kept warm and layered until the interface between the upper and lower phases is clear and the layers are clear. The upper layer is the sulfonated raffinate oil, and the lower layer is the sulfonate aqueous solution. The lower layer of the sulfonate aqueous solution is released and concentrated until the appearance...

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PUM

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Abstract

A preparation method of a sulfonate flotation agent comprises the following steps that (1), paraffin-base or naphthenic-base distillate oil, oxidized paraffin and olein serve as raw materials to conduct sulfonation, acid oil subjected to sulfonation is subjected to standing for sedimentation, and the acid oil containing pure sulphonic acid on the upper layer and multisulfo-based sulfonic acid on the lower layer are separated; (2), the acid oil containing the pure sulphonic acid and the multisulfo-based sulfonic acid are neutralized into salt through sodium hydroxide aqueous solutions correspondingly; and (3) the neutralized sulphonate and multisulfo-based sulphonate are blended, and a product after blending is the sulfonate flotation agent.

Description

technical field [0001] The invention provides a preparation method of a sulfonate flotation agent. Background technique [0002] Petroleum distillates treated with oleum, sulfuric acid or SO 3 Sulfonation introduces sulfonic acid groups, and the mixture that is neutralized by alkali is petroleum sulfonate. In addition, petroleum sulfonate can also be synthesized by heavy alkylbenzene sulfonation, referred to as synthetic sulfonate. Petroleum sulfonate is not only a surfactant, but also an important flotation agent. [0003] Before the 1970s, foreign theoretical research on petroleum sulfonate flotation was very active. Regarding the mechanism of action between sulfonate and minerals, L Yousan, A.M. Marani, M.c. Beltrenny, etc. were studying dodecyl During the flotation of hematite by sulfonate, the hypothesis of electrostatic interaction between sulfonate and mineral surface has been proposed. At the same time, it is believed that chemical adsorption may occur, and later...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/012
Inventor 白云牛春革方新湘周华朱海霞
Owner PETROCHINA CO LTD
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