Check patentability & draft patents in minutes with Patsnap Eureka AI!

Steel compositions with improved Anti-coking properties

A technology of composition and performance, applied in the direction of rigid pipes, manufacturing tools, furnace types, etc., can solve the problems of low mechanical strength and impact toughness

Active Publication Date: 2018-10-23
VALLOUREC TUBES FRANCE
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this steel has low mechanical strength and impact toughness

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
  • Steel compositions with improved Anti-coking properties
  • Steel compositions with improved Anti-coking properties
  • Steel compositions with improved Anti-coking properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] The drawings and the following description basically contain certain characteristic elements. They form an integral part of the description and can therefore not only be used for a better understanding of the invention, but also contribute where necessary to its definition.

[0074] The object of the invention is more particularly the manufacture of tubular components for refinery furnaces. However, the steel composition can be used to manufacture other components that may be exposed to coking phenomena.

[0075] figure 1 denotes a tubular part according to the invention. figure 2 Yes figure 1 A cross-section of a part of after substantially uniform exposure to coking, corresponding to, for example, a substantially vertically extending tubular part. image 3 Yes figure 1 A cross-section of a component after substantially non-uniform exposure to coking, corresponding to, for example, a substantially horizontally extending tubular component.

[0076] Each tubular p...

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

No PUM Login to View More

Abstract

The invention concerns the field of steels for special uses, in particular those intended to be in contact with combustion fumes. The invention also concerns tubular components made from such steels.The steel is both resistant to the coking phenomenon and has improved mechanical performances. The steel comprises at most 0.15 % carbon (C), between 0.3 and 1% manganese (Mn), between 1.4 and 3% silicon (Si), between 0.5 and 3% copper (Cu), between 8 and 10% chromium (Cr), between 0.5 and 3% nickel (Ni), between 0.01 and 0.07% nitrogen (N), between 0.8 and 1.1% molybdenum (Mo), the remainder of the composition essentially comprising iron (Fe) and impurities.

Description

technical field [0001] The invention relates to the field of steels with special uses, in particular steels intended to come into contact with combustion fumes. The invention also relates to tubular components based on this steel. Background technique [0002] Petroleum product processing and conversion plants consist of multiple units such as furnaces, cuves, reactors and stacks, which are connected by piping. The walls of these units and ducts consist mostly of steel. [0003] Steel suitable for the above equipment must have mechanical properties suitable for harsh conditions such as high temperature and high stress. Otherwise, accelerated aging can degrade the performance of the component. For this, it is accepted that the crystal structure of the steel must be controlled. The content ranges of several commonly used chemical elements are indicated for this purpose in standards such as ASTM A335 / A335M or EN10216-2. Adherence to the provisions of these standards is hig...

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): C22C38/02C21D9/08C22C38/04C22C38/40C22C38/42C22C38/44C22C38/48C22C38/50
CPCC21D9/08C22C38/02C22C38/04C22C38/40C22C38/42C22C38/44C22C38/48C22C38/50C21D1/28F16L9/02C21D8/105C21D6/004C21D6/005C21D6/008C22C38/001C22C38/34C22C38/002C22C38/06
Inventor V·罗西F·A·博尼利亚安古诺N·达尔西
Owner VALLOUREC TUBES FRANCE
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com