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A kind of solid corrosion inhibitor and preparation method thereof

A corrosion inhibitor and solid technology, applied in the field of solid corrosion inhibitor and its preparation, can solve problems such as maintaining long-distance pipelines, and achieve the effects of good protection effect, good control of dissolution and release, and low temperature

Active Publication Date: 2017-02-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a solid corrosion inhibitor and a preparation method thereof. This solves the technical problem that existing liquid corrosion inhibitors cannot maintain long-distance pipelines, especially the second half of long-distance pipelines, without changing the original pipeline structure

Method used

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  • A kind of solid corrosion inhibitor and preparation method thereof
  • A kind of solid corrosion inhibitor and preparation method thereof

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preparation example Construction

[0029] The preparation method of the solid corrosion inhibitor provided by the present invention includes the following steps:

[0030] A. According to the formula ratio, measure the corresponding coating wax, water-soluble corrosion inhibitor, solid binder, synergist and foaming disintegrant;

[0031] B. Dissolving the synergist: dissolve the synergist in water, and the mass ratio of the synergist to the water is between 1:1 and 1:10 to obtain the synergist solution;

[0032] C. Making adjuvant dough: After uniformly mixing the solid binder and the foaming disintegrant, knead it evenly with the synergist solution obtained in step B to obtain the adjuvant dough;

[0033] D. Making a corrosion inhibitor dough: knead the auxiliary dough obtained in step C with a water-soluble corrosion inhibitor to obtain a corrosion inhibitor dough;

[0034] E. Preparation of corrosion inhibitor pellets: the corrosion inhibitor dough obtained in step D is pressed into corrosion inhibitor pellets with a d...

Embodiment 1

[0039] A solid corrosion inhibitor, comprising paraffin wax and solid corrosion inhibitor particle balls. The paraffin wax is evenly wrapped on the surface of the solid corrosion inhibitor particle balls, and the weight ratio of the solid corrosion inhibitor particle balls to the paraffin wax is 10:1 , The solid corrosion inhibitor particle ball contains 30 parts by weight of 20% water-containing glucosamide corrosion inhibitor, 50 parts of solid binder (water-soluble starch, low-gluten flour, gum arabic powder, hydroxymethyl fiber Sodium and β-cyclodextrin), 5 parts of synergist (sodium sulfite and acetoxime), and 5 parts of foaming disintegrant.

[0040] The foaming disintegrant is a mixture of sodium bicarbonate and oxalic acid, wherein the mass ratio of sodium bicarbonate and oxalic acid is 1:1.

[0041] The solid corrosion inhibitor and its preparation method include the following steps:

[0042] A. Measure 11 grams of corresponding paraffin wax, 30 grams of glucosamide corrosi...

Embodiment 2

[0051] A solid corrosion inhibitor, comprising microcrystalline wax and solid corrosion inhibitor particle balls. The microcrystalline wax is uniformly wrapped on the surface of the solid corrosion inhibitor particle balls. The solid corrosion inhibitor particle balls are combined with the microcrystalline wax. The weight ratio is 20:1, the solid corrosion inhibitor particle ball contains 45 parts by weight of 25% water-containing glucosamide corrosion inhibitor, 40 parts of solid binder (water-soluble starch, low-gluten flour and hydroxymethyl Base cellulose sodium), 3 parts of acetoxime, and 9 parts of foaming disintegrant.

[0052] The foaming disintegrant is a mixture of sodium bicarbonate and tartaric acid, wherein the mass ratio of sodium bicarbonate and tartaric acid is 2:1.

[0053] The solid corrosion inhibitor and its preparation method include the following steps:

[0054] A. Measure 5 grams of corresponding microcrystalline wax, 45 grams of glucamide corrosion inhibitor ...

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Abstract

The invention discloses a solid corrosion inhibitor and a preparation method thereof. The solid corrosion inhibitor comprises coating wax and spherical solid corrosion inhibitor particles, wherein the spherical solid corrosion inhibitor particles are coated with the coating wax, the weight ratio of the spherical solid corrosion inhibitor particles to the coating wax is 10:1-20:1, and the spherical solid corrosion inhibitor particles contain following components in parts by weight: 30-45 parts of a water-containing water-soluble corrosion inhibitor, 40-50 parts of a solid binder, 1-5 parts of a synergist and 5-10 parts of a foaming disintegrant. The preparation method of the solid corrosion inhibitor comprises the following steps of: weighing all the components according to the proportion of a formula, dissolving the synergist in water, adding the solid binder and the foaming disintegrant, rubbing up uniformly, adding the water-containing water-soluble corrosion inhibitor, rubbing up, pressing into spherical corrosion inhibitor particles, and waxing. The solid corrosion inhibitor provided by the invention has a sustained-release effect. By adopting the solid corrosion inhibitor, the problem that the liquid corrosion inhibitor can only effectively protect pipelines against corrosion in a short distance and can not well protect the far ends of long-distance pipelines can be solved.

Description

Technical field [0001] The invention belongs to the field of metal corrosion inhibition, and more specifically, relates to a solid corrosion inhibitor and a preparation method thereof. Background technique [0002] As the oil field enters the mid-to-late production period, the environment it faces is getting worse and worse, with water cuts in most oil wells reaching more than 90%. By processing the produced water and reinjecting it into the ground, the recycling of sewage is realized, which can not only improve the oil recovery rate, but also effectively protect the environment. Oilfield sewage is more complicated. It is a complex mixture with water as the main body, including solid impurities, oil and other suspended solids, dissolved gas, salts and some organic substances, which leads to corrosion and scaling of ground pipelines, and a series of increased water injection pressures. problem. Comprehensive utilization of corrosion inhibitors for treatment is an effective measu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/14
Inventor 付朝阳余萌王江顺何金杯
Owner HUAZHONG UNIV OF SCI & TECH