Industrial naphthalene yield
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Recently, I have been in charge of the tar processing section. I would like to ask fellow industry professionals about the yield of industrial naphthalene in your company. This is a matter of concern to leaders.
The yield of industrial naphthalene from anhydrous tar is generally not less than 8%; it can reach 9.5% at higher levels, with the highest value in the industry reaching 10%
The yield of anhydrous tar from 95% industrial naphthalene is around 8.8%, with the raw tar containing approximately 11% naphthalene.
The yield of 95 industrial naphthalene from anhydrous tar generally depends mainly on the content of naphthalene in the raw tar. The efficiency of the reaction setup depends on the degree of purification of naphthalene; according to my formulas, the yield of naphthalene is around 9.5%, with a purification degree of over 90%
Generally 8.5–9.5%, for anhydrous tar.
During tar distillation, it is necessary to maximize the concentration of naphthalene; taking the production of triple mixture as an example, this means reducing the amount of naphthalene in anthracene oil and light oil； During the distillation of industrial naphthalene, it is necessary to extract as much naphthalene as possible in order to reduce the amount of naphthalene contained in the pure phenol oil and the washing oil ； It is also related to the naphthalene content in the tar of the raw coal.
Under normal circumstances it’s 9%, but when it comes to poor-quality tar, it’s hard to say
Our factory’s value is generally between 8.8 and 8.9.
We have a large inventory of industrial naphthalene, and it seems that the market conditions aren’t good; the yield is around 10% I think