Nitrogen production processThe cooling requirements of the plant are provided, from a fractional distillation (4) at a relatively low pressure, by decompressing (3) one or more fluids including the mixture to be treated, or by decompressing a part of the cycle gas. GASTINNE SOPHIEVENET ...
The present invention relates to improved reaction process that allows to obtain excellent NF3 product yield, while minimizing the escape of process gas from the melt waste (HF / NH3) fluoride caused by the process and minimize unreacted. 基本的NF3工艺为F2与铵离子源例如氟化氢铵(ammonium acid ...
synthetic ammoniaChemical plant for production of ammonia and nitrogen fertilizers.(more) The Haber-Bosch process directly synthesizes ammonia from nitrogen and hydrogen and is the most economical nitrogen-fixation process known. About 1909 the German chemist Fritz Haber ascertained that nitrogen from the...
World grain production has more than tripled due to the combined efforts of both Green Revolutions. 3. Identify and describe the TWO main ways agriculture adds nitrogen to waterways today. a. Crops are provided with synthetic fertilizers, including forms of ammonia (“anhydrous”), nitrate, urea...
about 50% of the N fertilizer applied to cropping systems is not absorbed by plants, but lost to the environment as ammonia (NH3), nitrate (NO3−), and nitrous oxide (N2O, a greenhouse gas with 300 times the heat-trapping capacity of carbon dioxide), raising agricultural production costs...
Nitrogen-doped porous activated carbon monoliths (NDP-ACMs) have long been the most desirable materials for supercapacitors. Unique to the conventional template based Lewis acid/base activation methods, herein, we report on a simple yet practicable novel approach to production of the three-dimensional...
process for the production of water-insoluble azo dyes Water-insoluble azo dyes have the formula: where A is the residue of a diazo component; B is a (substd) p-phenylene residue; R1 is an alkyl group which may carry substituents other than benzoyloxy groups, and R2 has the formula -alk...
A process for producing biopolymers comprises passing nitrogen deficient wastewater through a treatment system comprising micro-organisms which grow aerobically in nitrogen deficien
专利名称：Nitrogen generator process for the production of low volume of high purity nitrogen from compressed air 发明人：Ward, Derek Edwin 申请号：EP84108381 申请日：19840717 公开号：EP0132756A3 公开日：19850710 专利内容由知识产权出版社提供 专利附图：摘要：@ A process is described for the ...
"Nitrogen-containing composition and process for producing the same" The present invention relates to a process comprising adding sulfuric acid to an aqueous solution containing a carboxylic acid ammonium salt obtained from a biological starting material; and recovering a carboxylic acid, and in which ...