Published in Chemical and Petroleum Engineering
Xenon is a cryogenic product that is currently in short supply. Requirements for its purity are increasing. Its consumption in microelectronics, medicine, and space technology and for high-energy particle physics research is rising. The permissible impurity contents in Xe for various applications were analyzed. A universal research cryogenic unit f...
Published in Chemical and Petroleum Engineering
Calculation formulas for estimating the influence of the state parameters of temperature, pressure, and moisture content on the operation of a piston compressor are obtained. It is shown that at the start of compression in a compressor temperature depends mainly on heating of the gas produced by the walls and its moisture content. The pressure at t...
Published in Chemical and Petroleum Engineering
Results of research on the processing of spent acid etching solution (SAES) produced during manufacturing of titanium products by their etching in hydrochloric acid are presented in this paper. The processing technology consists of neutralizing SAES with alkali, filtering, drying and calcining of titanium hydroxide precipitate, and also processing ...
Published in Chemical and Petroleum Engineering
The present study is devoted to evaluating the influence of the number of technical inspection cycles on the remaining life of gas cylinders with different methods of cleaning of the inner surface of the equipment and with different compositions of the corrosive media. The thickness of the wall of the cylindrical part, floor, and neck of a gas cyli...
Published in Chemical and Petroleum Engineering
The causes of gaseous nitrogen (N2 ) losses from the atmosphere of an inhabited space station and the methods for restoring the atmospheric composition are reviewed. The desirability of delivering compressed gaseous and solid N2 to the station is shown. Expressions for calculating the amount of N2 required for delivery to the space station are give...
Published in Chemical and Petroleum Engineering
Preservation of the purity of liquid hydrogen (H2 ), which is used to fuel electrochemical generators of spacecraft power supply systems, during storage and transportation in model ZhVTs-100M railroad tank cars is studied. The quality of liquid H2 at various technological stages of transportation from the railroad tank-car filling plant to the cons...
Published in Chemical and Petroleum Engineering
A modern air separation plant control system must solve a host of problems, including variation in conditions of plant operation with full guarantee of its automatic flow. The procedure of gearing the plant from one operation mode to another is based on gradual change of control action and collection of desired products without impairment of their ...
Published in Chemical and Petroleum Engineering
A classification of removable vortex generators (turbulators) in pressurized tubular channels with round cross-section is proposed. The most characteristic designs of vortex generators offered by domestic and foreign designers and inventors are considered.
Published in Chemical and Petroleum Engineering
Formulas for calculating internal energy saving in a fractionating column without preheating and with heating to boiling point of the initial mixture are given. Formulas are derived for calculating internal energy saving in various schemes of heating of the initial mixture by vapor stream in the rectifying section of the column. The optimum scheme ...
Published in Chemical and Petroleum Engineering
Crude chloroform purification methods to remove impurities with properties similar to those of chloroform (1,1-dichloroethane and cis-1,2-dichloroethylene) were analyzed. The considered methods for removing impurities from crude chloroform included reaction-rectification and separate processing in a reactor and a distillation column. The results of...
