Hydrogen production calculation

The product is hydrogenated in 4,000 cc of ethanol at room temperature and under normal atmospheric pressure with a catalyst prepared In the usual manner from 400 g of Raney nickel alloy. The calculated amount of hydrogen is taken up in approximately 75 hours. After filtration and evaporation to a small volume, the residue Is distributed between 1,000 cc of chloroform and water each. The chloroform solution is then dried over sodium sulfate and evaporated to a small volume. Precipitation of the hydrogenation product with petroleum ether yields an amorphous white powder which Is filtered by suction, washed with petroleum ether and dried at 50°C In a high vacuum. 1. athyl-2-podophyllinic acid hydrazide is obtained in a practically quantitative yield. 

A side stream from the cathode product mixture is passed over a room temperature alumina bed to remove HF. The nitrogen/hydrogen ratio is estimated, and from this ratio and the known flow rate of the nitrogen reference stream, the current efficiency for hydrogen production is calculated. 

If the percent yield of a reaction is already known, we can calculate how much of a product to expect from a synthesis that uses a known amount of starting material. For example, the Haber synthesis of ammonia stops when 13% of the starting materials have formed products. Knowing this, how much ammonia could an industrial producer expect to make from 2.0 metric tons of molecular hydrogen First, calculate the theoretical yield ... 

For a production rate of 10,000 tonnes per year of hydrogen chloride, calculate the heat removed by the burner jacket and the heat removed in the external cooler. Take the excess hydrogen as 1 per cent over stoichiometric. The hydrogen supply contains 5 per cent inerts (take as nitrogen) and is fed to the burner at 25°C. The chlorine is essentially pure and is fed to the burner as a saturated vapour. The burner operates at 1.5 bar. 

Only references with a possibility to calculate all specific rates of hydrogen production included here and in other tables. 

Some literature data have allowed us to calculate three types of hydrogen production rates (Tab. 3) and compare them with data for suspension cultures. 

For the economic evaluation, this price is compared with the costs of cheaper hydrogen production options, like natural gas reforming. With an operating time of 6750 h and a natural gas price of 2.35 ct/kWh, hydrogen costs are at 5.3 ct/kWh. This is much lower than the surplus wind pathway, if an electricity price of 4 ct/kWh is assumed. Further calculations have been performed, to show at what natural gas price natural gas reforming would reach hydrogen costs from surplus wind electricity the hydrogen price of surplus wind electricity is only reached at a natural gas price of 5.5 ct/kWh. If a carbon tax of 20/t is introduced, the necessary natural gas price is 5 ct/kWh (compare Fig. 16.10). 

Four model compounds, n-undecane, tetralin, cis/trans decalin and mesitylene, and a natural gas condensate from the North Sea were also cracked. Analyses and the reference code key of the coal-based feedstocks and the gas condensate are given in Table 1. Paraffin, naphthene, and aromatic-type analyses were calculated from gas chromatographic analyses of the partially hydrogenated anthracene oil and gas condensate whereas, mass spectrometric analysis was performed on the two coal extract hydrogenates and their further hydrogenated products. 

Calculating hydrogen production by the electrolyzer system for both configuration... 

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