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Hydrogen processing

The processing steps involved in treating the hydrogen from the electrolytic cells are shown in Fig. 3.3. [Pg.40]

FIGURE 3.3. Process scheme for treating hydrogen from the electrolytic cells. [Pg.41]


Liquid products must undergo hydrogen processing before joining equivalent crude oil fractions and continuing the normal process property improvement steps. [Pg.380]

Recent patents and pubHcations describe process improvements. Conversions can be followed by on-line hplc (93). The enzyme amidase can be used to reduce residual monomers (94—96). A hydrogenation process for reduction of acrylamide in emulsions containing more that 5% residual monomer has been patented (95). Biodegradable oils have been developed (97). [Pg.143]

The first commercial production of fatty alcohol ia the 1930s employed the sodium reduction process usiug a methyl ester feedstock. The process was used ia plants constmcted up to about 1950, but it was expensive, hazardous, and complex. By about 1960 most of the sodium reduction plants had been replaced by those employing the catalytic hydrogenolysis process. Catalytic hydrogenation processes were investigated as early as the 1930s by a number of workers one of these is described ia reference 26. [Pg.446]

Causticfusion subtotal 7 Tatty acid hydrogenation processes ... [Pg.453]

Tatty acid hydrogenation process 51 Methyl ester hydrogenation process ... [Pg.453]

Another hydrogenation process utilizes internally generated hydrogen for hydroconversion in a single-stage, noncatalytic, fluidized-bed reactor (41). Biomass is converted in the reactor, which is operated at about 2.1 kPa, 800°C, and residence times of a few minutes with steam-oxygen injection. About 95% carbon conversion is anticipated to produce a medium heat value (MHV) gas which is subjected to the shift reaction, scmbbing, and methanation to form SNG. The cold gas thermal efficiencies are estimated to be about 60%. [Pg.25]

Table 6. Characteristics and Efficiencies for Producing Hydrogen Processes ... Table 6. Characteristics and Efficiencies for Producing Hydrogen Processes ...
Reduction. Most ketones are readily reduced to the corresponding secondary alcohol by a variety of hydrogenation processes. The most commonly used catalysts are palladium, platinum, and nickel For example, 4-methyl-2-pentanol (methyl isobutyl carbinol) is commercially produced by the catalytic reduction of 4-methyl-2-pentanone (methyl isobutyl ketone) over nickel. [Pg.487]

Du Pont uses a Hquid-phase hydrogenation process that employs a palladium —platinum-on-carbon catalyst. The process uses a plug-flow reactor that achieves essentially quantitative yields, and the product exiting the reactor is virtually free of nitroben2ene. [Pg.231]

Temperature and Pressure. Temperature and pressure both have large effects on the course of a hydrogenation process. Higher... [Pg.259]

To start a hydrogenation process, the oil and catalyst are charged first, then the vessel is evacuated for safety and hydrogen is supplied continuously from storage and kept at some fixed pressure, usually in the range of I to 10 atm (14.7 to 147 psi). Internal circulation of... [Pg.2112]

The influence of Zn-deposition on Cu(lll) surfaces on methanol synthesis by hydrogenation of CO2 shows that Zn creates sites stabilizing the formate intermediate and thus promotes the hydrogenation process [2.44]. Further publications deal with methane oxidation by various layered rock-salt-type oxides [2.45], poisoning of vana-dia in VOx/Ti02 by K2O, leading to lower reduction capability of the vanadia, because of the formation of [2.46], and interaction of SO2 with Cu, CU2O, and CuO to show the temperature-dependence of SO2 absorption or sulfide formation [2.47]. [Pg.24]

For dirnethyldesweostrychnidine the Achmatowicz formula has been slightly modified to (XIX) by Holmes and Robinson. The third substance, dimethyWesstrychnidine-D yields both a dihydro- and a tetrahydro-derivative and, unlike des-base-D, from which it is derived, does not undergo internal alkylation when subjected to the hydrogenation process in acid solution it is represented by (XX). [Pg.579]

Product stereochemistry is a function of the specific catalyst used for hydro-genation. For example, palladium generally gives more of the thermodynamically stable product than other catalysts. This effect has been attributed to an increased rate of equilibration of the steps in the hydrogenation process. Consequently, palladium should not be used to hydrogenate readily isomerizable olefins such as A - and A -steroids. ... [Pg.113]

Stability toward reduction makes hydrogen fluoride a good medium for different hydrogenation processes [1, 2] It is a useful solvent for the hydrogenation of benzene in the presence of Lewis acids [f ] Anhydrous hydrofluonc acid has pronounced catalytic effect on the hydrogenations of various aromatic compounds, aliphatic ketones, acids, esters, and anhydrides in the presence of platinum dioxide [2] (equations 1-3)... [Pg.941]

Multiple reactors achieve 95-96% conversion and recovery, and stringent air pollution legislation has now pushed this to 99%. A similar sequence of reactions is used for sulfur production from crude oil except that the organosulfur compounds must first be removed from the refinery feed and converted to H2S by a hydrogenation process before the sulfur can be recovered. [Pg.651]

When hydrogenation reactions cease to be experimental and enter the stage of industrial development, the cost of the hydrogenation process becomes important. Some of the factors that enter into the determination of this cost are considered here. [Pg.23]

Determination of the actual cost of a hydrogenation process is difficult. Among the factors entering into the determination are catalyst cost, catalyst life, cost of materials, capital investment, actual yield, space-time yield, and purification costs, Considerable data are needed to make an accurate evaluation. [Pg.24]


See other pages where Hydrogen processing is mentioned: [Pg.503]    [Pg.126]    [Pg.89]    [Pg.90]    [Pg.185]    [Pg.496]    [Pg.477]    [Pg.14]    [Pg.259]    [Pg.259]    [Pg.260]    [Pg.260]    [Pg.260]    [Pg.260]    [Pg.118]    [Pg.119]    [Pg.483]    [Pg.81]    [Pg.410]    [Pg.167]    [Pg.425]    [Pg.431]    [Pg.516]    [Pg.2365]    [Pg.215]    [Pg.221]    [Pg.11]    [Pg.145]    [Pg.241]    [Pg.162]    [Pg.14]    [Pg.20]   
See also in sourсe #XX -- [ Pg.705 , Pg.737 ]

See also in sourсe #XX -- [ Pg.19 ]




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Acetylene Hydrogenation Process Design

Addition processes, hydrogen

Adsorbents for Hydrogen PSA Processes

Ammonia-hydrogen exchange process

Ammonia-hydrogen process

Amperometric detection of hydrogen peroxide in bleaching and washing processes

Anodic process hydrogen evolution

Anodic process hydrogen evolution from

Anthraquinone hydrogenation process

Anthraquinone process hydrogenation catalyst

Anthraquinone process hydrogenator

Asymmetric Hydrogenations - The Monsanto L-Dopa Process

Batch hydrogenation processes

Biazzi hydrogenation process

Biological processes hydrogen production

Catalytic processes hydrogenation

Cathodic process hydrogen evolution

Chemical processing hydrogen peroxide

Chemical processing selective hydrogenation

Chlor-alkali process hydrogen processing

Claus plant hydrogen sulfide processing

Coal Hydrogenation Processes

Collision Processes of Hydrogen Molecules

Comparison of Multi-step Indirect Solar Thermal Hydrogen Processes

Computational Studies of Organocatalytic Processes Based on Hydrogen Bonding

Corrosion process hydrogen electrode reaction

Data Processing in Bottom-Up Hydrogen Exchange Mass Spectrometry

Deuterium separation processes hydrogen distillation

Deuterium separation processes water-hydrogen exchange

Diffusion transfer process hydrogenation

Direct Solar Thermal Hydrogen Processes

Double hydrogen atom transfer process

Dual-temperature water-hydrogen sulfide exchange process

Effect of Hydrogen Ion on Cation-Exchange Processes

Electrochemical Processes Standard Hydrogen Potential

Electron transfer processes intermolecular hydrogen bonds

Elevated temperature solar hydrogen processes

Enantioselective hydrogenation processes

Fat hydrogenation processes

Haber process hydrogen

Heavy water hydrogen exchange process

Heavy water hydrogen sulfide exchange process

Heterogeneous process hydrogen peroxide concentration

High-Temperature, Indirect-Solar Thermal Hydrogen Processes

High-pressure hydrogenation processes

Hydrocarbon processes hydrogenation

Hydrocarbon processing hydrogen purification

Hydrocarbon processing hydrogen sulfide removal

Hydrogen Atom Collision Processes

Hydrogen Bayer process

Hydrogen Buss process

Hydrogen DEGUSSA process

Hydrogen DuPont adiponitrile process

Hydrogen Exchange Processes

Hydrogen Fischer-Tropsch process

Hydrogen Membrane Technologies and Application in Fuel Processing

Hydrogen Peroxide by the Electrochemical Process

Hydrogen Process Optimization

Hydrogen abstraction-cyclization process

Hydrogen bonds and solvent effects in soil processes

Hydrogen bonds proton transfer process

Hydrogen bonds/bonding molecular recognition processes

Hydrogen burning processes

Hydrogen by the steam-iron process

Hydrogen conservation process

Hydrogen consuming processes

Hydrogen consumption process variables

Hydrogen cyanide Andrussow process

Hydrogen cyanide processes

Hydrogen cyanide wastewater treatment process

Hydrogen damage process control

Hydrogen diffusion process

Hydrogen discharges, ionic processes

Hydrogen distillation process

Hydrogen electrode process

Hydrogen embrittlement chemical processes

Hydrogen embrittlement failure process

Hydrogen embrittlement testing of plating processes and aircraft

Hydrogen evolution reaction metal interface process

Hydrogen from Biorenewables via Biological Processes

Hydrogen from Biorenewables via Thermochemical Processes

Hydrogen high temperature processes

Hydrogen ion on cation-exchange processes

Hydrogen ions in interfacial processe

Hydrogen ions in interfacial processes

Hydrogen ions in interfacial processes of montmorillonite

Hydrogen ions interfacial processe

Hydrogen ions processes

Hydrogen mineral processing

Hydrogen order-disorder process

Hydrogen oxidation processes

Hydrogen peroxide Wacker process

Hydrogen peroxide anthraquinone process

Hydrogen peroxide color removal processes

Hydrogen peroxide electrochemical process

Hydrogen peroxide hydroperoxidation process

Hydrogen peroxide in clean processes

Hydrogen peroxide industrial processes

Hydrogen peroxide integrated process

Hydrogen peroxide textile-bleaching processes

Hydrogen petrochemical processes

Hydrogen precipitation processes

Hydrogen process studies

Hydrogen process technology

Hydrogen process, liquid

Hydrogen processes

Hydrogen processes

Hydrogen processing costs, Claus plant

Hydrogen processing severity

Hydrogen processing, pressure-swing

Hydrogen production by biological processes

Hydrogen production process control

Hydrogen production processes

Hydrogen production thermochemical processes

Hydrogen recovery by membrane processes

Hydrogen recycling process

Hydrogen reforming process

Hydrogen reversible processes

Hydrogen separation advanced coal conversion processes

Hydrogen separation process

Hydrogen spillover activated process

Hydrogen sulfide exchange process

Hydrogen sulfide from process

Hydrogen sulfide industrial processes

Hydrogen sulfide physical solvent processes

Hydrogen sulfide process systems

Hydrogen sulfide-water exchange process (

Hydrogen systems processing

Hydrogen water splitting processes

Hydrogen, energy conversion 4-electron reduction process

Hydrogen-borrowing process

Hydrogen-oxygen reactions primary process

Hydrogen-selective membrane reactor process

Hydrogen-transfer processes

Hydrogen-transfer processes double bond hydrogenation

Hydrogenation Process (Quinone to Hydroquinone)

Hydrogenation competitive process

Hydrogenation continuous catalytic process

Hydrogenation mechanisms hydrogen-transfer processes

Hydrogenation process

Hydrogenation process

Hydrogenation process condition

Hydrogenation process, sustainable

Hydrogenation processability

Hydrogenation processes liquid-phase

Hydrogenation processes resistances

Hydrogenation processes, fatty alcohol production

Hydrogenation processing technologies

Hydrogenation-disproportionation process

Hydrogenative process

Hydrogenative process

Imine Hydrogenation Laboratory Process

Imine Hydrogenation Technical Process

Industrial processes hydrogen

Industrial processes hydrogen halides

Initiation and Induction Processes Involving Hydrogen Peroxide

Internal hydrogen transfer processes

Kinetic parameters hydrogen electrode process

Liquid hydrogen processing development

Liquid hydrogen production process

Mechanical hydrogen embrittlement testing of plating processes and

Metal hydrogen adsorption process

Methane hydrogen transfer process

Nickel catalyst hydrogenation processing technologies

Non-Electrolytic Processes for the Manufacture of Chlorine from Hydrogen Chloride

Nucleophilic substitution process hydrogenation reaction

Olefin metathesis hydrogen transfer processes

Other Manufacturing Processes for Hydrogen

PSA Processes for Production of Hydrogen Only

Partial Oxidation Texaco Hydrogen Generation Process

Petrochemical Processing hydrogenation

Phase Oxidation Processes for Hydrogen Sulfide Removal

Photobiological hydrogen production process

Pressure hydrogen processing

Pressure swing adsorption hydrogen purifying processes

Primary Processes, the Hydrogen Halides HC1, HBr, and HI

Process hydrogen peroxide synthesis

Process nitrobenzene hydrogenation

Process phenol hydrogenation

Processing hydrogen peroxide synthesis

Processing nitrobenzene hydrogenation

Purifying hydrogen process

Radioactive Processes Involving Hydrogen

Rate coefficients of elementary processes in the hydrogen—nitrogen oxide systems

Rate determining processes hydrogen termination

Reactivity competitive hydrogenation process

Recovery process, hydrogen-hydrocarbon

Release of Hydrogen Atoms and Molecules from Recycling Processes

Reversibility process reversable hydrogen

Separation Process Hydrogen Isotopes

Separation process hydrogen production

Some Industrial Hydrogenation Processes

Steam iron process, hydrogen from

Steam-hydrogen exchange process

Sulfur hydrogen production process

Temperature Ammonia-Hydrogen Exchange Process

Temperature Water-Hydrogen Exchange Processes

Temperature Water-Hydrogen Sulfide Exchange Process

Texaco Hydrogen Generation Process

Transfer hydrogenation process

Treating processes hydrogen

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