Can graphite packing be used in valves applied to 98% concentrated sulfuric acid?

2022-07-02View Original

Thread Content

Can graphite packing be used in valves applied to 98% concentrated sulfuric acid?

Reply #22022-07-02

The common fillers are polytetrafluoroethylene (PTFE) and graphite. 1. When high temperatures are required under operating conditions, graphite packing (a combination of flexible graphite and packer graphite) should be used. 2. Graphite packing has a high compressibility, which imposes requirements on the structure of the valve. Plain PTFE will do.

Reply #32022-07-04

Concentrated sulfuric acid is an oxidizing acid, and graphite fillers are generally not suitable for use.

Reply #42022-07-04

If the temperature does not exceed 45 degrees, there shouldn’t be any major problems. However, as the temperature rises, sulfuric acid also acts as an oxidizing agent for carbon, leading to severe corrosion.

Reply #52022-08-12

Can it be solved with a single type of paint?

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.

Quick Links