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

Anti-corrosion method for M.A.N gas holder used in blast furnace gas-resistant environment

A technology for blast furnace gas and gas holders, which is applied to the device and coating of the surface coating liquid, which can solve the problems of peeling, poor effect, and harsh reprocessing conditions

Inactive Publication Date: 2013-04-03
QINHUANGDAO SHOUQIN METAL MATERIAL +1
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The top plate, bottom plate and oil tank at the bottom of the cabinet are corroded by water vapor and corrosive gas in the gas, and accidents such as air leakage are prone to occur
At present, domestic Man-type gas tanks are commonly used for anti-corrosion with epoxy coal tar pitch coating, which has poor corrosion resistance. Usually, local coating peeling occurs within two years, resulting in accelerated corrosion.
When the paint layer is repaired and added to the cabinet top plate after corrosion, due to the existence of paint residue on the surface, corrosion pits, etc., the reprocessing conditions are harsh, the procedure is complicated, and the effect is poor.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The embodiment of the present invention is suitable for maintenance construction and new construction of the Man-type gas tank, and mainly includes two parts: derusting and painting. The key points of operation are outlined below:

[0018] The construction process of overhauling the gas tank adopts the high-pressure water jet rust removal process. The high-pressure water is industrial water or tap water. The pH value of the industrial water quality is neutral (PH value 7), and the suspended solids are controlled at 10mg / L to avoid nozzle blockage; high-pressure water pressure Pressurize to 180MPa to achieve a good rust removal effect; the air pressure of air spraying is controlled at 0.4MPa, the nozzle is perpendicular to the object surface, and the distance is controlled at 25cm. Surface coating thickness control: two layers of MC-1006402 primer, thickness 200μm±20μm, one layer of MC-8006401 surface coating, thickness 100μm±20μm. After the rust removal, the first anti...

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 discloses an anti-corrosion method for an M.A.N gas holder used in a blast furnace gas-resistant environment, which belongs to the technical field of M.A.N gas holder construction. A process of the method is partitioned into two flows, i.e., a flow for removing rust and sundries from the surface of a steel plate respectively with high-pressure water, and a process for coating on an MC-1006402 bottom layer and spraying onto an MC-8006401 surface coating in a gas-free way. The invention has the advantages that a reliable anti-corrosion method for overhauling or newly constructing top and bottom plates in the holder is provided for the M.A.N gas holder running in a severe environment, and anti-corrosion time can last for 8-15 years after a dry-method dedusting process is applied to the gas holder.

Description

technical field [0001] The invention belongs to the technical field of Mann-type gas holder construction, and in particular provides an anti-corrosion method for a Mann-type gas holder used in a blast furnace gas-resistant environment. Background technique [0002] Man-type gas holders are widely used in the metallurgical industry at present, and the design pressure is generally 7.0Kpa to 12.0Kpa. At present, they are widely used in blast furnace gas storage and system pressure stabilization in China. Domestic blast furnace gas dry dedusting technology has the advantages of water saving, power saving, environmental protection, etc., and is currently widely used. The blast furnace gas condensate is in an acidic state under dry dedusting, with a general pH value of 1 to 5, which accelerates the corrosion of gas equipment, including gas cabinets. The anticorrosion of the inner wall of the gas cabinet is divided into several parts, the top board of the cabinet, the bottom board...

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): B05D1/02B05D1/36B24C1/08
Inventor 陈廷军王晓东孟刚李永新
Owner QINHUANGDAO SHOUQIN METAL MATERIAL
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