As a byproduct of crude refining process petroleum coke features a low ash content, moderate volatility and a high heating value.
石油焦是炼油工艺的副产品，具有低灰分、一定挥发份和高热值的特性。
A new industrialized process giving high pure naphthenic acids refining from crude naphthenic acids has been proposed in this paper.
提出了一种由粗环酸精制为高纯环烷酸的工业化新工艺。
The process for the treatment of the waste acid from crude benzol refining with calcining process is studied, the optimum operation data are discussed and the process is optimized.
研究了焙烧法处理粗苯精制废酸的工艺过程，探讨了最佳运行参数，优化了工艺流程。
The related oil product is composed of crude oil, fuel oil and semi-finished oil in the crude oil refining process.
涉及的油品包括原油、燃料油及原油精炼过程中的半成品油。
Appling for liner program method to build mathematical model to solve problem of the productive process, such as, mixing refining crude oil and product optimization.
应用线性规划建立数学模型来解决生产过程问题，即原油混炼、产品优化问题。
The property, usage and synthetic method of caprolactam were introduced in this paper, the coke oven gas pressure swing adsorption technology and crude benzol hydro-refining process were described.
通过对捣固焦炉装煤烟尘治理技术的不断探索与研究，开发出颗粒层烟气吸附净化装置、炉门烟尘控制装置两项专利技术，并成功地应用于多项工程设计中。
The property, usage and synthetic method of caprolactam were introduced in this paper, the coke oven gas pressure swing adsorption technology and crude benzol hydro-refining process were described.
通过对捣固焦炉装煤烟尘治理技术的不断探索与研究，开发出颗粒层烟气吸附净化装置、炉门烟尘控制装置两项专利技术，并成功地应用于多项工程设计中。
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