METHOD OF PRODUCING CARBON DIOXIDE AND AMMONIA FROM UREA
	POCHITALKINA I A; TURAEV D YU
	2023-08-10
专利权人	FEDERAL STATE BUDGETARY EDUCATIONAL (BUDG-Non-standard)
申请日期	2023-08-10
专利号	RU2826573-C1
成果简介	NOVELTY - Invention relates to a method of producing carbon dioxide, ammonia and ammonium carbonate from urea. Method of producing carbon dioxide, ammonia and ammonium carbonate from urea is characterized by that urea or its mixture with water is heated with sulfuric acid and/or phosphoric acid, either with a mixture of sulfuric and/or phosphoric acid with their acid ammonium salts, or with a mixture of acid ammonium salts of phosphoric acid and sulfuric acid, taken in the ratio of sulfur-containing reagent to phosphorus-containing reagent as (1–99):(99–1). Decomposition of urea to produce carbon dioxide is carried out at temperature of 150–200 °C, decomposition of the obtained product containing ammonium salts, in order to obtain gaseous ammonia is carried out at temperature of 300–490 °C, temperature range of 200–300 °C with sequential process of decomposition of urea and temperature range of 300–490 °C when carrying out the process of decomposition of urea in a single step, it is used for simultaneous production of carbon dioxide and ammonia. To purify ammonium carbonate, it is sublimated at temperature of 60–105 °C from 1 to 5 times. Non-volatile products after decomposition of urea are reused for decomposition of a new portion of urea. USE - Chemistry. ADVANTAGE - Providing a method of producing ammonia and carbon dioxide for producing ammonium fertilizers, ammonium salts, ammonium carbonate salts. 5 cl, 5 ex
IPC 分类号	C01B-032/50 ; C01B-032/60 ; C01C-001/08
国家	俄罗斯
专业领域	农业科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/20883
专题	中国科学院新疆生态与地理研究所
作者单位	FEDERAL STATE BUDGETARY EDUCATIONAL (BUDG-Non-standard)
推荐引用方式 GB/T 7714	POCHITALKINA I A,TURAEV D YU. METHOD OF PRODUCING CARBON DIOXIDE AND AMMONIA FROM UREA. RU2826573-C1[P]. 2023.

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