natural gas nitrogen fertilizer
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synthesizing ammonia from natural gas?
How cost effective and practical can a nitrogen product(fertilizer) be made from methane gas, produced from a small scale biogas manure digester?
Not very. Ammonia plants, due to the low cost of it and high cost in manufacture due to the cathalysts required, only become proffitable on large scales. They are 100 million dollar investments. But the process required is to split the methane into carbon and hydrogen and “burning” the hydrogen with nitrogen gas manufactured from fractionalized destillation of air. It takes huge amounts of energy to run all the compressors so ammonia production is basically energy refinement. Just having small amounts of methane won´t do.
Why not use the manure to manufacture nitrogen products from it? All you need to do is to switch the digester from an anaerob biogasdigester, which doesn´t utilize all the enrgy in the decomposition anyway, to an aerobe digester. With enough oxygen in the digester all the organic materials will become fully oxidized to give CO2, water, and all the sulfates, phosphates and nitrates you can handle. Aerobe biodegradation is also much faster than anaerobe degradation. And you´ll get huge amounts of heat to boot. But you need to keep a balance inbetween the nitrogen and carbon ratio in the manure. Too much nitrogen and the bacteria will get rid of it as ammonia or nitrogen gas.
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Natural Gas: Domestic Nitrogen Fertilizer Production Depends on Natural Gas Availability and Prices.: An article from: General Accounting Office Reports & Testimony $5.95 This digital document is an article from General Accounting Office Reports & Testimony, published by Stonehenge International on October 1, 2003. The length of the article is 3120 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web … |
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Natural gas: domestic nitrogen fertilizer production depends on natural gas availability and prices $14.13 Original publisher: [Washington, D.C.] : U.S. General Accounting Office, [2003] OCLC Number: (OCoLC)53403442 Subject: Nitrogen fertilizers — United States. Excerpt: … natural gas prices in 2003 have remained well above historic averages and are continuing to exact a financial toll on the domestic nitrogen fertilizer manufacturing industry. These officials cite the fact that, in June 2003, t… |
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