Chemical News and Journal of Industrial Science, Tom 144,Wydanie 3756Chemical news office., 1932 |
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Strona 232
... nitrogen to ammonia that we can be very brief . The process is simple enough , a mixture of the gases nitrogen and hydro- gen suitably purified is circulated over a catalyst at a temperature of 500 ° and a pressure of 100-200 ...
... nitrogen to ammonia that we can be very brief . The process is simple enough , a mixture of the gases nitrogen and hydro- gen suitably purified is circulated over a catalyst at a temperature of 500 ° and a pressure of 100-200 ...
Strona 233
... nitrogen are separated by the combined use of pressure and low temperature . The carbon dioxide is removed by washing at low pressure as above described . The gas is then fraction- ally cooled , whereby first the methane and then the ...
... nitrogen are separated by the combined use of pressure and low temperature . The carbon dioxide is removed by washing at low pressure as above described . The gas is then fraction- ally cooled , whereby first the methane and then the ...
Strona 238
... nitrogen , 20 per cent . each for super- phosphate and basic phosphate slag and as high as 63 per cent . for fertiliser lime . The decline in the total sales of potash salts , in both the domestic and foreign markets , was 28 per cent ...
... nitrogen , 20 per cent . each for super- phosphate and basic phosphate slag and as high as 63 per cent . for fertiliser lime . The decline in the total sales of potash salts , in both the domestic and foreign markets , was 28 per cent ...
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