[Discussion Thread 25] What technical requirements should be considered when designing containers using only blast furnace gas?
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bg4.png【Discussion Thread 25】What technical requirements need to be considered when designing containers using only blast furnace gas as a medium? For carbon steel? Stainless steel? When using a carbon steel lining? Design, material selection, manufacturing, welding, testing, inspection, acceptance, heat treatment, pressure testing, etc. Question: The CO content in blast furnace gas is generally 25%–30%; what other components are present in it? https://bbs.hcbbs.com/thread-2347163-1-1.html The main components are CO, CO2, N2, H2, CH4, etc. Among them, the combustible component CO accounts for about 25%; the contents of H2 and CH4 are very low. CO2 and N2 account for 15% and 55% respectively. These should be considered acidic gases. Hydrogen sulfide is generally not present in blast furnace gas, but if the sulfur content in the raw coal is high, sulfur dioxide may be present.
Should bg4.png be classified as highly hazardous, should heat treatment be applied, and should the corrosion allowance be increased? Are the new media hazard standards effective?
This post was last edited by kareale88 on 2019-3-13 at 11:23; bg4.png. Additional question: How should one choose the design pressure, operating temperature, flange type, etc., for this? With lining; what to consider when there is no lining?
What are the specific components of blast furnace gas?
According to Haiyou’s response, the main components are CO, CO2, N2, H2, CH4, etc. Among these, the combustible component CO accounts for about 25%; the amounts of H2 and CH4 are very small. CO2 and N2 account for 15% and 55% respectively. These gases should be considered acidic gases. Hydrogen sulfide is generally not present in blast furnace gas, but if the sulfur content in the raw coal is high, sulfur dioxide may be present. Other documents: see figure
Classified as moderately hazardous; no heat treatment is required, nor is it necessary to increase the corrosion margin. The standard HG20660-2017 has not yet been implemented.
Since it may not be implemented for certain reasons, then what is published on the Work Standard Network loses its meaning, right?
This post was last edited by zjq1962 on 2019-3-15 08:23. According to the responses from the former General Administration of Quality Supervision, Inspection and Quarantine, the 2000 version should still be followed until an official notification is issued.
I’m also looking for an answer from the General Administration of Quality Supervision, Inspection and Quarantine; I’ve seen it before.