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Corrosion-resistant alloy feeding pipe for isooctane production and machining process thereof

A corrosion-resistant alloy and processing technology technology, applied in the field of alloys, can solve problems such as unsatisfactory corrosion resistance, and achieve the effects of improving surface corrosion resistance, improving service life, and high practicability

Active Publication Date: 2022-02-25
NINGXIA JINYUHAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the production process of isooctane, the raw material feed pipe needs to be in contact with chemical substances for a long time, so the limitation of the application environment requires the alloy feed pipe to have excellent oxidation resistance and corrosion resistance. The corrosion resistance of the alloy feed pipe cannot meet our needs

Method used

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  • Corrosion-resistant alloy feeding pipe for isooctane production and machining process thereof

Examples

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Effect test

Embodiment 1

[0036] A processing technology for a corrosion-resistant alloy feed pipe for isooctane production, comprising the following steps:

[0037] (1) Take the alloy pipe body, the surface is polished by sandpaper, and after polishing, place it in a hydrochloric acid solution with a volume fraction of 5% for ultrasonic cleaning for 3 minutes, ultrasonic cleaning for 20 minutes with acetone, ultrasonic cleaning for 10 minutes with deionized water, and dry for later use; The material is 316L stainless steel;

[0038] (2) Take the alloy pipe body after cleaning, use aluminum powder as the aluminum supply agent and silicon powder as the silicon supply agent to prepare a co-infiltration agent, and each component of the co-infiltration agent includes: in terms of mass percentage, silicon powder 12%, aluminum 25% aluminum oxide powder, 57% aluminum oxide powder, 4% calcium chloride powder, and 2% rare earth chloride; the rare earth chloride is a compound of cerium trichloride and samarium t...

Embodiment 2

[0045] A processing technology for a corrosion-resistant alloy feed pipe for isooctane production, comprising the following steps:

[0046] (1) Take the alloy pipe body, the surface is polished by sandpaper, and after polishing, place it in a hydrochloric acid solution with a volume fraction of 5% for ultrasonic cleaning for 4 minutes, ultrasonic cleaning for 25 minutes with acetone, ultrasonic cleaning for 15 minutes with deionized water, and dry for later use; The material is 316L stainless steel;

[0047] (2) Take the alloy pipe body after cleaning, use aluminum powder as the aluminum supply agent and silicon powder as the silicon supply agent to prepare a co-infiltration agent, and each component of the co-infiltration agent includes: in terms of mass percentage, silicon powder 12%, aluminum 25% aluminum oxide powder, 57% aluminum oxide powder, 4% calcium chloride powder, and 2% rare earth chloride; the rare earth chloride is a compound of cerium trichloride and samarium t...

Embodiment 3

[0054] A processing technology for a corrosion-resistant alloy feed pipe for isooctane production, comprising the following steps:

[0055] (1) Take the alloy pipe body, the surface is polished by sandpaper, and after polishing, place it in a hydrochloric acid solution with a volume fraction of 5% for ultrasonic cleaning for 4 minutes, ultrasonic cleaning for 30 minutes with acetone, ultrasonic cleaning for 20 minutes with deionized water, and dry for later use; The material is 316L stainless steel;

[0056] (2) Take the alloy pipe body after cleaning, use aluminum powder as the aluminum supply agent and silicon powder as the silicon supply agent to prepare a co-infiltration agent, and each component of the co-infiltration agent includes: in terms of mass percentage, silicon powder 12%, aluminum 25% aluminum oxide powder, 57% aluminum oxide powder, 4% calcium chloride powder, and 2% rare earth chloride; the rare earth chloride is a compound of cerium trichloride and samarium t...

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Abstract

The invention discloses a corrosion-resistant alloy feeding pipe for isooctane production and a machining process thereof. Since the feeding pipe disclosed by the invention is used for isooctane production, and the feeding pipe involved in the production process is in contact with chemical substances for a long time, the limitation of the application environment requires that the alloy feeding pipe needs to have excellent oxidation resistance and corrosion resistance; therefore, a 316L stainless steel material is used for preparing an alloy pipe body, and the surface treatment is carried out on the alloy pipe body, so that the surface corrosion resistance of the alloy pipe body is improved. Aluminum powder is used as an aluminum supply agent, silicon powder is used as a silicon supply agent, calcium chloride is used as an activating agent, co-permeation slurry is prepared according to a formula, and then the surface of the alloy pipe body is co-permeated with an aluminum layer; due to the arrangement of an aluminum-silicon co-permeation layer, the corrosion resistance of the alloy feeding pipe can be effectively improved; and the process is reasonable in design and simple to operate, the prepared alloy feeding pipe is excellent in corrosion resistance, the surface is hydrophobic, a corrosive medium can be effectively prevented from entering the alloy feeding pipe, the service life of the feeding pipe is prolonged, and the alloy feeding pipe has high practicability.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a corrosion-resistant alloy feed pipe for isooctane production and a processing technology thereof. Background technique [0002] Alkylation reaction refers to the reaction of introducing alkyl (-R) into carbon, nitrogen, oxygen and other atoms in organic molecules, referred to as alkylation. Commonly used alkylating agents include olefins, halogenated alkanes, alkyl sulfates and alcohols; the alkylated substances mainly include alkanes and their derivatives, aromatic hydrocarbons and their derivatives. Alkanes and their derivatives include fatty alcohols, fatty amines, carboxylic acids and their derivatives, etc., through alkylation, methyl, ethyl, isopropyl, tert-butyl, and long carbon chains can be introduced into the alkylated molecule Alkyl and other alkyl. [0003] In the production process of isooctane, the raw material feed pipe needs to be in contact with chemical subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C10/02C23C10/26C23C10/60C23C22/60C23C22/83
CPCC23C28/34C23C28/321C23C10/26C23C10/02C23C10/60C23C22/83C23C22/60
Inventor 魏建文李占武高松林王杰杨永凯李桂锋
Owner NINGXIA JINYUHAI CHEM