Nitrogen
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This post was last edited by yezhuzi on 2010-9-6 10:06. And so on, top top top top top top top top top top top top top top top top top top top top top top top and so on
Over a decade ago, when synthetic ammonia and urea were produced using naphtha as a raw material, naphtha was required. Following the rise in oil prices, due to high production costs, all nitrogen fertilizer plants in the country that used naphtha as a raw material ceased operations and switched to using coal or natural gas instead.
The process route that used naphtha as a raw material to produce synthetic ammonia has faded from history. In some gasification processes that use residue oil as a feedstock, naphtha is used as an extractant for the recovery of carbon black; one such facility is located at Zhenhai Refining & Chemical Fertilizer Plant, and it is still in operation. The ammonia consumption is about 40 kilograms per ton.
Originally, there were 6 large-scale fertilizer plants across the country that used naphtha as a raw material (5 operated by Sinopec and 1 by Wujing Chemical Plant). Now, the fertilizer plants owned by Guangdong Petrochemical and Wujing Chemical Plant have ceased operations entirely, while the other four plants have been upgraded to use coal instead of oil. At present, the fertilizer plants in Jiujiang and Zhenhai that use residue oil as raw material have ceased operations, and those that use oil as raw material will soon all disappear from use. Given the current trend of rising natural gas prices, natural gas-based fertilizers will also inevitably disappear from the market in the near future.
The use of naphtha in the production of ammonia and urea is now a thing of the past. Within Sinopec’s facilities, those that relied on oil as a feedstock have switched to coal, while those that couldn’t do so have been shut down. This is also a sign of societal progress
The equipment in Ninghua used to have oil heads as well!