Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Distillation apparatus tower top system dew point corrosion test method

A dew point corrosion and distillation device technology, which is applied in the field of dew point corrosion test of the tower top system of the distillation device, can solve the problems that the reliability of the data cannot be verified, and the corrosion weight loss experiment cannot be carried out at the same time, so as to achieve high safety, no pollution, and simple operation Effect

Active Publication Date: 2016-01-27
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN102692438A invents a dew point corrosion experimental device capable of electrochemical testing, but it cannot perform corrosion weight loss experiments at the same time, and the reliability of the data cannot be verified by corrosion weight loss

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Distillation apparatus tower top system dew point corrosion test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] Such as figure 1 Shown is a test method for dew point corrosion of the overhead system of a distillation unit. The steps are:

[0028](1) Preparation of working electrodes for electrochemical testing: the working electrodes for electrochemical testing, i.e., the first working electrode and the second working electrode, are processed into cylinders with a diameter of 10-12 mm, welded with electrodes, and then welded with rings. Oxygen resin coating, after solidification, metallographic sandpaper is polished step by step to 800~1200#, then polished, degreased with acetone, wiped with anhydrous alcohol cotton ball, blown dry with a hair dryer, and put it in a drying box for later use;

[0029] Preparation of corrosion weight loss coupons: Process the corrosion coupons for the corrosion weight loss test into cuboids of required size, grind them step by step to 800~1200# with sandpaper, then degrease with acetone, and then soak in absolute ethanol for 2~5 Minutes, take it ...

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

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The present invention discloses a distillation apparatus tower top system dew point corrosion test method. The method is as follows: 1) processing a working electrode and a corrosion coupon; 2) an etching solution is poured into a five-necked flask, a second (II) three-electrode system is fixed in three mouths of the five-necked flask, the five-necked flask is fixed in a numeric display oil bath pot; 3) other two ports of the five-necked flask are respectively connected with an inlet and an outlet of a condenser horizontal inner tube, the corrosion coupon is fixed in the condenser horizontal inner tube, a first (I)three-electrode system is fixed in the upper portion of a condenser inclined tube; and 4) the five-necked flask is heated by the numeric display oil bath pot, a first-section condenser outer tube cooling water inlet and a second-section condenser outer tube cooling water outer are opened, the cooling water flow is adjusted, then acidic aqueous electrochemical tests, corrosion weight loss experiments under dew formation environment and electrochemical test experiments under dew formation environment can be performed. The electrochemical test and corrosion weight loss dew point corrosion test are can be performed by the method, tests of electrochemical impedance spectroscopy, electrochemical noise and the like under dew point environment can be realized, and data reliability can be verified by weight loss experiments.

Description

technical field [0001] The present invention designs a method and device for testing dew point corrosion of the tower top system of a distillation device, and more specifically relates to a method and device for testing dew point corrosion of the tower top system of a distillation device that can realize electrochemical testing and corrosion weight loss. Background technique [0002] Dew point corrosion is a corrosion phenomenon in which saturated steam cools into liquid and corrodes materials. The dew point corrosion at the top of the distillation unit occurs in the initial condensation area of ​​the tower top and the condensation cooling system or the area where there is partial condensation. Most of the HCl in the oil and gas at the top of the tower enters the initial condensation water, and the concentration of the hydrochloric acid solution can be as high as 1-2wt%. , so that the pH value of the condensed water at the dew point is very low, forming a highly corrosive "h...

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
no application Login to View More
IPC IPC(8): G01N17/02
Inventor 段永锋王宁于凤昌崔新安李朝法张宏飞徐静
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com