V. A. Kulikov

Hydrogen Permeability of Palladium Membranes Made of Alloy V-1 in Laboratory Investigations and Membrane Devices

An analysis of literature data on determination of the hydrogen permeability of palladium alloy V-1 membranes is given. It is shown that attention should be focused on the reliability of the specific hydrogen-permeability coefficients when performing design calculations using mathematical models to predict and analyze the optimal environment of various types of membrane devices for producing highly pure hydrogen.

Evaluation of efficiency of special-purity hydrogen production from products of steam conversion of methane and its close homologs in high-temperature converter–membrane equipment system using methane or carbon monoxide conversion catalyst

The feasibility and conditions of efficient and economic production of special-purity hydrogen from products of steam conversion of methane and its close homologs in a high-temperature converter–membrane equipment system containing a methane or carbon monoxide conversion catalyst are studied using numerical modeling. It is shown that the investigated system is suitable for efficient hydrogen production from methane, ethane, propane, and butane whose technical and economic indexes are similar.

Extraction of extra pure hydrogen from methane steam conversion products in membrane equipment, combined simultaneously with two CO and CH4 conversion catalysts

A numerical modeling method is used to study conditions and parameters for effective preparation of extra pure hydrogen from methane conversion products within a high-temperature converter system, i.e., membrane equipment using two catalysts (CO and CH4 conversion) simultaneously within a high-pressure vessel. Sufficiently complete use is achieved for the starting steam and methane mixture for preparation of high purity hydrogen with the minimum possible content of H2, CO, and CH4 impurities in the discharge gas.

Analysis of the Calculated Parameters of a Model Membrane-Catalytic Converter for the Production of High-Purity Hydrogen from Methane

Based on the analysis of a model tube-type membrane reformer for the production of high-purity hydrogen from natural gas, a satisfactory quantitative correlation of the values of the main technological parameters at an operating temperature of 600°С was established, especially for the mode with purging by steam.

Estimate of High-Purity Hydrogen Production Efficiency in Membrane-Catalytic Systems from Steam Reforming Products of Gasoline, Kerosene, and Diesel Oil

An analysis showed that the investigated liquid (gasoline, kerosene, and diesel fuel) and gaseous hydrocarbons may be of interest as feedstocks for high-purity hydrogen production using membrane-catalytic systems with sufficiently high technical parameters.

Modeling a Membrane Reformer with a Carbon-Monoxide Conversion Catalyst for Extracting High-Purity Hydrogen from Methane Steam-Conversion Products

A mathematical model for membrane extraction of high-purity hydrogen from methane steam-conversion products that takes into account hydrogen outflow through a palladium membrane (V-1 alloy) and chemical reactions among components of the starting gas mixture in the presence of a carbon monoxide conversion catalyst is presented. A practical example shows that the presented model describes adequately and rather accurately the main parameters of the model membrane reformer with the carbonmonoxide catalyst and allows the optimal technological regimes to be selected.

Energy and Resource Efficiency in Industrial Systems for Production and Use of High-Purity Hydrogen

The feasibility of applying energy- and resource-saving technologies in the modernization of the existing metallurgical industries associated with the production and use of high-purity hydrogen is clearly illustrated on a few practical examples. One way of reducing energy consumption is by using natural gas as a feedstock for the production of high-purity hydrogen instead of using the electrolysis method. Another way of reducing energy consumption in the production of high-purity hydrogen is by developing high-purity hydrogen reuse systems.

Analysis of Parameters and Modes for Producing High-Purity Hydrogen from Natural Gas in Membrane-Catalytic Devices

Mathematical modeling was used to analyze a number of membrane-catalytic devices with different throughputs and designs and to establish a reasonable quantitative correlation of the calculated parameters and experimental data for hydrogen production and waste-gas composition in order to increase the energy efficiency of the process for producing high-purity hydrogen from natural gas.

Analysis of Parameters of High-Purity Hydrogen Production from Methane in a Laboratory-Scale Membrane Reformer with an Ultrathin Palladium Membrane

The key characteristics of a laboratory-scale membrane reformer for high-purity hydrogen production from methane with a 4-μ