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RU2003117224A - METHOD FOR AMMONIA SYNTHESIS FROM NITROGEN AND HYDROGEN MIXTURE PRODUCED FROM NATURAL GAS - Google Patents

METHOD FOR AMMONIA SYNTHESIS FROM NITROGEN AND HYDROGEN MIXTURE PRODUCED FROM NATURAL GAS

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Publication number
RU2003117224A
RU2003117224A RU2003117224/15A RU2003117224A RU2003117224A RU 2003117224 A RU2003117224 A RU 2003117224A RU 2003117224/15 A RU2003117224/15 A RU 2003117224/15A RU 2003117224 A RU2003117224 A RU 2003117224A RU 2003117224 A RU2003117224 A RU 2003117224A
Authority
RU
Russia
Prior art keywords
synthesis gas
vol
synthesis
nitrogen
following paragraphs
Prior art date
Application number
RU2003117224/15A
Other languages
Russian (ru)
Other versions
RU2284296C2 (en
Inventor
Вилльем ДЕЙВИ
Original Assignee
МГ Текнолоджиз АГ
Аммониа Касале С.А.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10055818A external-priority patent/DE10055818A1/en
Application filed by МГ Текнолоджиз АГ, Аммониа Касале С.А. filed Critical МГ Текнолоджиз АГ
Publication of RU2003117224A publication Critical patent/RU2003117224A/en
Application granted granted Critical
Publication of RU2284296C2 publication Critical patent/RU2284296C2/en

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Claims (8)

1. Способ каталитического синтеза аммиака из смеси азота и водорода, отличающийся тем, что природный газ совместно с обогащенным кислородом газом, содержащим, по меньшей мере, 70 об.% кислорода, подвергают автотермическому риформингу при температуре от 900 до 1200°С и давлении от 40 до 100 бар в присутствии катализатора крекинга, получая сырой синтез-газ, содержащий 55-75 об.% Н2, 15-30 об.% СО и 5-30 об.% СО2 в пересчете на сухое состояние, причем объемное соотношение Н2:СО составляет от 1,6: 1 до 4: 1; сырой синтез-газ удаляют из печи для автотермического риформинга, охлаждают и подвергают каталитической конверсии для превращения СО в Н2, получая конвертированный синтез-газ, содержащий в пересчете на сухое состояние, по меньшей мере, 55 об.% H2 и не более 8 об.% СО2 конвертированный синтез-газ подвергают многоступенчатой абсорбционной очистке для извлечения CO2, CO и СН4, причем осуществляют контактирование синтез-газа с жидким азотом, используя, по меньшей мере, одну ступень абсорбционной очистки; получают смесь азота и водорода, которую направляют на каталитический синтез аммиака.1. The method of catalytic synthesis of ammonia from a mixture of nitrogen and hydrogen, characterized in that natural gas together with oxygen-enriched gas containing at least 70 vol.% Oxygen, is subjected to autothermal reforming at a temperature of from 900 to 1200 ° C and a pressure of 40 to 100 bar in the presence of a cracking catalyst, obtaining crude synthesis gas containing 55-75 vol.% H 2 , 15-30 vol.% CO and 5-30 vol.% CO 2 in terms of dry state, and the volume ratio H 2 : CO is from 1.6: 1 to 4: 1; crude synthesis gas is removed from the autothermal reforming furnace, cooled and subjected to catalytic conversion to convert CO to H 2 to obtain a converted synthesis gas containing, in terms of dry state, at least 55 vol.% H 2 and not more than 8 vol.% CO 2 converted synthesis gas is subjected to multi-stage absorption purification to extract CO 2 , CO and CH 4 , and the synthesis gas is contacted with liquid nitrogen using at least one stage of absorption purification; get a mixture of nitrogen and hydrogen, which is sent to the catalytic synthesis of ammonia. 2. Способ по п.1, отличающийся тем, что, по меньшей мере, часть синтезированного аммиака превращают в карбамид путем взаимодействия с диоксидом углерода.2. The method according to claim 1, characterized in that at least a portion of the synthesized ammonia is converted into urea by reacting with carbon dioxide. 3. Способ по п.1 или 2, отличающийся тем, что из конвертированного синтез-газа извлекают СО2, используя, по меньшей мере, одну ступень абсорбционной очистки, и, по меньшей мере, часть извлеченного CO2 направляют на синтез карбамида.3. The method according to claim 1 or 2, characterized in that CO 2 is extracted from the converted synthesis gas using at least one absorption cleaning step, and at least a portion of the extracted CO 2 is sent to the synthesis of urea. 4. Способ по п.1 или одному из последующих пунктов, отличающийся тем, что CO2 из конвертированного синтез-газа извлекают путем физической промывки метанолом при температуре от -70 до -20°С.4. The method according to claim 1 or one of the following paragraphs, characterized in that the CO 2 from the converted synthesis gas is extracted by physical washing with methanol at a temperature of from -70 to -20 ° C. 5. Способ по п.1 или одному из последующих пунктов, отличающийся тем, что путем абсорбционной очистки жидким азотом из синтез-газа извлекают содержащий СО газ, который направляют на каталитическую конверсию.5. The method according to claim 1 or one of the following paragraphs, characterized in that by absorption cleaning with liquid nitrogen from the synthesis gas is extracted containing CO gas, which is sent to the catalytic conversion. 6. Способ по п.1 или одному из последующих пунктов, отличающийся тем, что смесь азота и водорода направляют на синтез аммиака в реакторы, содержащие, по меньшей мере, два катализатора, причем указанная смесь служит охлаждающей средой для косвенного охлаждения находящегося в одном из реакторов катализатора.6. The method according to claim 1 or one of the following paragraphs, characterized in that the mixture of nitrogen and hydrogen is sent to the synthesis of ammonia in reactors containing at least two catalysts, and this mixture serves as a cooling medium for indirect cooling located in one of catalyst reactors. 7. Способ по п.1 или одному из последующих пунктов, отличающийся тем, что объемное соотношение H2:CO2 в образующемся при конверсии синтез-газе составляет от 2,5: 1 до 3,0: 1 в пересчете на сухое состояние.7. The method according to claim 1 or one of the following paragraphs, characterized in that the volume ratio of H 2 : CO 2 in the synthesis gas formed during the conversion is from 2.5: 1 to 3.0: 1, calculated on the dry state. 8. Способ по п.1 или одному из последующих пунктов, отличающийся тем, что на стадию абсорбционной очистки синтез-газа жидким азотом направляют природный газ под давлением от 10 до 100 бар, осуществляя его дросселирование до 8 бар.8. The method according to claim 1 or one of the following paragraphs, characterized in that at the stage of absorption purification of the synthesis gas with liquid nitrogen direct natural gas under a pressure of from 10 to 100 bar, carrying out its throttling up to 8 bar.
RU2003117224/15A 2000-11-10 2001-10-24 Method of the synthesis of ammonia from the nitrogen and hydrogen mixture produced from the natural gas RU2284296C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10055818.6 2000-11-10
DE10055818A DE10055818A1 (en) 2000-11-10 2000-11-10 Catalytic production of ammonia, especially for direct conversion into urea, using nitrogen-hydrogen starting gas mixture obtained from natural gas by autothermal reforming and catalytic conversion

Publications (2)

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RU2003117224A true RU2003117224A (en) 2004-11-27
RU2284296C2 RU2284296C2 (en) 2006-09-27

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Country Status (16)

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US (1) US7470415B2 (en)
EP (1) EP1337466B1 (en)
CN (1) CN1246225C (en)
AR (1) AR031308A1 (en)
AT (1) ATE265986T1 (en)
AU (2) AU1905402A (en)
CA (1) CA2428263C (en)
DE (2) DE10055818A1 (en)
DK (1) DK1337466T3 (en)
EG (1) EG24129A (en)
MX (1) MXPA03004159A (en)
MY (1) MY136389A (en)
RU (1) RU2284296C2 (en)
SA (1) SA01220591B1 (en)
UA (1) UA75901C2 (en)
WO (1) WO2002038499A1 (en)

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