Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A corrosion inhibitor, dripping technology, applied in the treatment of equipment corrosion/fouling inhibition, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as little effect, pipeline production process impact, etc., to reduce acid corrosion and overcome dew point corrosion , the effect of protective film stabilization
Inactive Publication Date: 2019-03-22
JIANGSU KECHUANG PETROCHEM
View PDF0 Cites 4 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] Some corrosion inhibitors have been used in the hydrorefining and hydrocracking units of many refineries to prevent corrosion and scaling, but the effect is minimal, and even production problems caused by excessive alkali values, such as Scaling and clogged pipes will affect the subsequent production process, etc.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0032] A hydrogenation corrosion inhibitor, comprising the following components in mass fraction: 10% of water-soluble quaternary ammonium salt, 4% of polyisobutylene succinimide, 5% of monoethanolamine, 8% of imidazoline naphthenate, propynyl alcohol 3%, benzotriazole 6%, and the balance is water.
[0033] Stir water, water-soluble quaternary ammonium salt, and polyisobutylene succinimide evenly, and cool down to about 30°C; then add benzotriazole, stir to fully dissolve, and finally add imidazoline naphthenate and propynyl alcohol , monoethanolamine, and stir evenly.
Embodiment 2
[0035] A hydrogenation corrosion inhibitor, comprising the following components in mass fraction: 8% of water-soluble quaternary ammonium salt, 4% of polyisobutylene succinimide, 5% of monoethanolamine, 8% of imidazoline naphthenate, propynyl alcohol 3%, benzotriazole 6%, and the balance is water.
[0036] The preparation method is the same as in Example 1.
Embodiment 3
[0038] A hydrogenation corrosion inhibitor, comprising the following components in mass fraction: 12% of water-soluble quaternary ammonium salt, 4% of polyisobutylene succinimide, 5% of monoethanolamine, 8% of imidazoline naphthenate, propynyl alcohol 3%, benzotriazole 6%, and the balance is water.
[0039] The preparation method is the same as in Example 1.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
molecular weight distribution
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a hydrogenation corrosion inhibitor. The hydrogenation corrosion inhibitor is prepared from the following components by mass: 8-12 percent of water-soluble quaternary ammoniumsalt, 1-5 percent of dispersant, 2-5 percent of monoethanolamine, 4-10 percent of water-soluble imidazoline compound, 1-5 percent of alkynol compound, 4-15 percent of nitrogen-containing adsorption corrosion inhibitor, and the balance of water. The synergistic effect of all the components of the hydrogenation corrosion inhibitor disclosed by the invention can significantly reduce acidic corrosioninhibition, and simultaneously reduce the amount of the hydrogenation corrosion inhibitor. Moreover, the hydrogenation corrosion inhibitor does not contain metals that are harmful to a catalyst, a pHvalue is 9-11, and a mechanical impurity is less than or equal to 0.08 percent.
Description
technical field [0001] The invention relates to a hydrogenation corrosion inhibitor, in particular to a hydrogenation corrosion inhibitor for the hydrogenation refining and hydrocracking unit fractionation tower top pipeline of an oil refinery. Background technique [0002] In recent years, with the gradual improvement of the country's refined oil standards, various refineries generally use hydrotreating to improve the quality of oil products in order to make the gasoline, kerosene and diesel produced meet the national environmental protection standards. However, the currently processed crude oil is gradually developing towards high sulfur and high acidity, causing serious corrosion and fouling in the high-pressure air cooler of the hydrogenation unit and downstream pipelines, seriously disturbing production safety and oil quality. [0003] Some corrosion inhibitors have been used in the hydrorefining and hydrocracking units of many refineries to prevent corrosion and scalin...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more