The structure and carbonization behavior of the pitches from the products of gas-coking coal hydrogenation performed at 420°C and 455°C in a continuous bench scale unit were estimated. The pitches, prepared as residues from vacuum distillation of purified hydrogenation products, were characterized b
Gas chromatographic control of the coal coking process: analysis of gases and aromatic by-products
✍ Scribed by Gianrico Castello; Manlio Riccio
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 610 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0016-2361
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✦ Synopsis
A gas purification and chemical recovery process connected to the coal coking plant of an iron-and steelworks has been controlled by analytical methods based on gas chromatography.
The raw and purified coal gas, the debenzolization medium (straw oil), the products and the by-products of benzene recovery were all analysed for their content of permanent gases, light hydrocarbons, aromatic hydrocarbons, water, ammonia, hydrogen sulphide, naphthalene, traces of straw oil and other impurities.
The GC method compared with the classical analytical procedures offers several advantages. It increases the speed and precision of analysis, reduces the working time, improves the working conditions, and permits a better control of products and process.
While many instrumental
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