Nanometer rare earth composite polymerization inhibitor as well as preparation method and application thereof

A composite polymerization inhibitor and nano-rare earth technology, which is applied in the fields of corrosion treatment/scaling inhibition of equipment, petroleum industry, hydrocarbon oil treatment, etc. It can solve the problems of ineffective prolongation of oil refining and hydrogenation units, poor scale inhibition and descaling effects, etc. problem, achieve the effect of maintaining long-term operation, saving production cost and reducing impact

Active Publication Date: 2021-04-09
上海集能化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, in actual production and application, after using the above-mentioned polymerization inhibitors, the effect of scale inhibition and descaling is poor, which leads to the impact on oil refining and hydrogenation Insignificant improvement in plant uptime

Method used

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  • Nanometer rare earth composite polymerization inhibitor as well as preparation method and application thereof
  • Nanometer rare earth composite polymerization inhibitor as well as preparation method and application thereof
  • Nanometer rare earth composite polymerization inhibitor as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: a kind of nano-rare earth composite polymerization inhibitor, each component and its corresponding weight are as shown in table 1, and prepare and obtain by following steps:

[0059] S1, N,N-dimethylformamide, 4-hydroxy-2,2,6,6-tetramethylpiperidine nitroxide free radical, antioxidant, calcium dodecylbenzenesulfonate, nano rare earth The oxide and nano-rare earth derivatives were mixed for 20 minutes at a temperature of 30°C to obtain a mixture;

[0060] S2, adding JM-1 fuel booster to the mixture, and mixing at a temperature of 50° C. for 40 minutes to obtain a nanometer rare earth composite polymerization inhibitor.

[0061] Wherein, antioxidant adopts 2,6-di-tert-butyl p-cresol;

[0062] Nanometer rare earth oxide adopts nanometer lanthanum oxide;

[0063] Lanthanum chloride is used for nano-rare earth derivatives;

[0064] The nano rare earth oxide and the nano rare earth derivative are composed of nano lanthanum oxide and lanthanum chloride in a we...

Embodiment 2-6

[0066] Embodiment 2-6: A kind of nano-rare earth composite polymerization inhibitor, the difference from Embodiment 1 is that each component and its corresponding weight are shown in Table 1.

[0067] Each component and its weight (kg) in table 1 embodiment 1-6

[0068]

Embodiment 7

[0069] Embodiment 7: a kind of nano-rare earth composite polymerization inhibitor, the difference with embodiment 4 is, in the preparation process of nano-rare earth composite polymerization inhibitor, antioxidant consists of 2,6-di-tert-butyl p-cresol and N,N'-di-sec-butyl-p-phenylenediamine is composed by mixing at a weight ratio of 1:1. Nano-rare earth oxides use nano-lanthanum oxide and nano-cerium oxide, nano-rare-earth derivatives use lanthanum chloride and cerium chloride, nano-rare-earth oxides and nano-rare earth derivatives are made of nano-lanthanum Cerium is mixed in a weight ratio of 1:1:1:1.

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Abstract

The invention relates to the technical field of polymerization inhibitors, and particularly discloses a nanometer rare earth composite polymerization inhibitor as well as a preparation method and application thereof. The nanometer rare earth composite polymerization inhibitor comprises the following components in parts by weight: 30-450 parts of N,N-dimethylformamide, 50-150 parts of 4-hydroxy-2,2,6,6-tetramethylpiperidine nitroxide free radicals, 10-60 parts of an antioxidant, 20-50 parts of calcium dodecyl benzene sulfonate, 10-50 parts of nanometer rare earth oxide-nanometer rare earth derivative, and 400-800 parts of a JM-1 fuel oil synergist, wherein the nanometer rare earth oxide-nanometer rare earth derivative is formed by mixing a nanometer rare earth oxide and a nanometer rare earth derivative. The preparation method comprises the following steps: mixing N,N-dimethylformamide and other raw materials to obtain a mixture, adding the JM-1 fuel synergist, and conducting mixing. The nanometer rare earth composite polymerization inhibitor provided by the invention can relieve coking and scaling on the pore surface of a catalyst and prolong the long-period normal operation of a device.

Description

technical field [0001] The application relates to the technical field of polymerization inhibitors, more specifically, it relates to a nanometer rare earth composite polymerization inhibitor, its preparation method and application. Background technique [0002] Hydrocracking is a processing method that converts heavy oil with large molecules into light oil with small molecules that are widely used. It can process straight-run diesel oil, catalytic cracking cycle oil, coking distillate oil, etc., and can also be used to produce gasoline, aviation fuel and low-freezing-point diesel oil from deasphalted heavy residual oil. The hydrocracking unit is one of the most important production units in a refinery. Regular overhaul of refinery hydrogenation unit is an important guarantee for safety, and extending the operation cycle of hydrogenation unit is of great significance to safety management. When the hydrogenation unit has been used for a long time, it needs to replace the cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G75/04
CPCC10G75/04
Inventor 于旭东于旭涛
Owner 上海集能化工有限公司
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