Cyanide production: the economics?
This data-file captures the cost of producing cyanide — hydrogen cyanide as a chemical intermediate and sodium cyanide as a crucial input to the gold-silver mining industry. Marginal costs are…
Froth flotation: the economics?
…their differing hydrophobicity. The ores are crushed and ground, then slurried with water, then agitated in a tank, through which air bubbles are blown. More hydrophobic particles will adhere to…
Energy history: how much wood can be cut in a day?
…exercise is that it is quite inconvenient to have to cut, transport and dry your own fuel; then kindle a fire; then clean up the ashes and air out the…
Refrigerants: leading chemicals for the rise of heat pumps?
What chemicals are used as refrigerants? This data-file is a breakdown of the c1MTpa market for refrigerants, across refrigerators, air conditioners, in vehicles, industrial chillers, and increasingly, heat pumps. The…
Methane slip: how much gas evades combustion?
…in the study actually came in “negative”. I.e., the air above the gas turbines was depleted in methane relative to the broader atmosphere, which was attributed to “partial combustion of…
NEL: green hydrogen technology review?
…A hydrogen vehicle typically stores hydrogen at 700-bar, so that densities can reach 40kg/m3. By contrast air and CO2 at 700-bar reach 500 and 1,100 kg/m3. Gasoline at 1-bar is…
CCS challenges: by any amines necessary?
…air emissions (nitrosamines are a possible show-stopper), especially where CCS plants are run intermittently, and all of the issues above can be highly sensitive to the impurities in the feed…
Diesel power generation: levelized costs?
…generator, switchgear, control systems, fuel supply systems, coolant and lubrication systems, a foundation, powerhouse civil works and wiring towards the connected load. In the fuel cycle, air is drawn into…
Energy intensity of fiber optic cables?
…a $260bn (market cap) giant, producing connectivity equipment, and has a Top 3 market share in transceivers. Sumitomo is also active, making both cables and transceiver modules. Air Products notes…
Polyester: production process?
…(ethane cracking), the coldest of which reaches -200ºC (cryogenic air separation), but the average process takes place at 200ºC. PET is produced from the condensation polymerization of PTA and ethylene…