C F Braun Description of Ammonia Synthesis
There are several processes to produce ammonia synthesis gas. The C F Braun (now may be referenced as Kellogg) process is one of the most current and acceptable processes due to the fact that the natural gas feed is less expensive than hydrogen generated from coke and water. This process has several stages of reaction and catalytic conversion that make it more presentable to industry, which are discussed in further detail. For the present time, the steam/air reforming concepts based on natural gas and other light hydrocarbons are considered to be the dominating group for ammonia synthesis. The first stage of the process is a preliminary purification section, where impurities, primarily sulfur compounds, are removed from the gas stream. The desulfurization vessel contains a catalyst that hydrogenates organic sulfur to H2S, which is then absorbed. The purpose of removing the sulfur is to increase the life span of the instruments down stream that may be sensitive to this particular compound. The gas, along with steam, is then fed into the primary reformer. T
. . .
Some common words found in the essay are:
H20 CO2, N2 H2, H2O CO2, , H2S R-SH, N2 CO2, CO CO2, CO CH4, H20 CO, gas stream, synthesis gas, co +, co2 +, secondary reformer, reaction takes, flue gas, ch4 +, lower temperatures, + h2, gas stream sent, + h2o co2, co2 + h2, secondary reformer exothermic, –––––> ch4 +,
Approximate Word count = 746
Approximate Pages = 3 (250 words per page double spaced)
|
