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A chemically modified Mannich base and its preparation method and application

A Mannich base and chemical modification technology, which is applied in the field of cleaning and utilization of light fuel oil engines, can solve problems such as oxidation and corrosion of metal surfaces, and achieve the effects of good compatibility, good thermal stability, and good polymerization selectivity

Active Publication Date: 2021-03-12
东营市庄溶生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, both of the above two main agents have polar genes. Once the excess is easy to cause oxidation and corrosion of the metal surface, the exposed metal surface will become a catalyst for the cracking of hydrocarbon molecules in the combustion chamber at high temperature, and the consequences will be even worse. serious

Method used

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  • A chemically modified Mannich base and its preparation method and application

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Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: the chemical modification of Mannich base

[0057] The specific modification method is as follows:

[0058] (1) Preparation of solvent: 2.5 parts by weight of paraformaldehyde are added to 10 parts by weight of methanol, heated to 60°C, and triethylamine with 3% of the total weight of methanol and paraformaldehyde is used as a catalyst, at a temperature of 80°C Reflux reaction for 3 hours, cooling; then add methanol and paraformaldehyde total weight 50% methylal, then add methanol, paraformaldehyde, methylal total weight 3% naphthalenesulfonic acid solid catalyst, heat up to 90°C, Continue to stir and reflux for 3 hours, stop stirring and cooling, filter and remove the solid catalyst to obtain a low polymerization degree methoxyl ether solvent;

[0059] (2) Mannich base and diethylenetriamine are weighed and mixed in a mass ratio of 2.5:1, and the low polymerization degree methoxy ether solvent prepared in step (1) is added, and the addition amount of the...

Embodiment 2

[0060] Embodiment 2: the chemical modification of Mannich base

[0061] The specific modification method is as follows:

[0062] (1) Preparation of solvent: with embodiment 1.

[0063] (2) Mannich base and p-hydroxydianiline are weighed and mixed in a mass ratio of 2.5:1, and the solvent prepared in step (1) is added, and the addition of solvent is Mannich base and p-hydroxydianiline total weight 20%, stirring in the reaction kettle, adding 2% naphthalenesulfonic acid solid catalyst of the total weight of p-hydroxydiphenylamine and Mannich base, controlling the temperature at 80-120 ° C and pressurizing under the protection of nitrogen with 1-2 kg of pressure, stirring and reacting After 3 hours, nitrogen gas was released, the unreacted solvent was removed by distillation, and the solid catalyst was removed by filtration to obtain chemically modified Mannich base B.

Embodiment 3

[0064] Embodiment 3: the chemical modification of Mannich base

[0065] The specific modification method is as follows:

[0066] (1) Preparation of solvent: with embodiment 1.

[0067] (2) Mannich base and dodecylphenol sulfonate isopropanol ammonium salt are weighed and mixed in a mass ratio of 3:1, and the solvent prepared in step (1) is added, and the amount of solvent added is Mannich base and 20% of the total weight of dodecylphenolsulfonic acid isopropanol ammonium salt, stir in the reactor, add Mannich base and dodecylphenolsulfonic acid isopropanol ammonium salt total weight 2.5% tetrachloride Tin catalyst, controlled temperature 80-120 ℃, pressurized 1-2 kg of nitrogen, stirred and reacted for 3 hours, released nitrogen, distilled off the unreacted solvent, filtered to remove the solid catalyst, and obtained chemically modified Mannich base c.

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Abstract

The invention discloses a chemically modified Mannich base and its preparation method and application. The chemical modification method comprises the following steps: (1) Mannich base and modifying agent are prepared in a weight ratio of (2-3) : (1‑2) mix, add solvent, stir evenly; (2) add catalyst, control temperature 80‑130 ° C, pressurize 1‑2 kg under the protection of nitrogen, stir for 2‑4 hours; (3) release nitrogen , the unreacted solvent was distilled off, and the catalyst was removed by filtration to obtain a chemically modified Mannich base. The present invention carries out chemical modification to Mannich base, and the Mannich base after chemical modification is used as the main agent to prepare gasoline detergent, can remove the air intake system, the air intake valve, the fuel injection of the vehicle during use. The deposits and carbon deposits on the oil nozzle and the combustion chamber can restore the air-fuel ratio, and achieve and restore the original power, economy and emission indicators of the vehicle.

Description

technical field [0001] The invention relates to the technical field of clean utilization of light fuel oil engines, in particular to a chemically modified Mannich base and its preparation method and application. Background technique [0002] With the opening of the curtain of my country's automobile age, the rapid development of the automobile industry and the acceleration of people's life rhythm, the consumption of gasoline is constantly increasing, and the emission of automobile exhaust is bound to continue to rise. At present, the emission of automobile exhaust has accounted for the urban More than 50% of air pollution sources, but also to the depth of pollution and the breadth of secondary pollution. [0003] Although my country has fully promoted clean gasoline: that is, it has achieved lead-free, high-octane number, and no benzene-containing components are allowed. However, most of these high-octane gasolines are produced on catalytic cracking units, and the content of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F8/32C08F8/34C08F10/00C10L1/236C10L1/24
CPCC08F8/32C08F8/34C10L1/236C10L1/2468C08F10/00
Inventor 张敏马锐周立刚程尚方
Owner 东营市庄溶生物科技有限公司