Tag Archives: ammonia

Power consumption reducing technology for synthetic ammonia refrigerator

Application Number: 00126630Application Date: 2000.10.10Publication Number: 1348084Publication Date: 2002.05.08Priority Information: International: F25C1/00;F25J3/06Applicant(s) Name: Baling Branch, China Petrochemical Corp., Ltd.Address: Inventor(s) Name: Li DewuPatent Agency Code: 00000Patent Agent: Abstract The present invention relates to the technological process of reducing power consumption of synthetic ammonia refrigerator and features that the pressure in the outlet liquid ammonia accepting… Read More »

Ammonia water process to desulfurize liquefied gas

Application Number: 00111256Application Date: 2000.08.03Publication Number: 1287155Publication Date: 2001.03.14Priority Information: International: C10L3/12Applicant(s) Name: China Petrochemical Co., Ltd.Address: Inventor(s) Name: Xu Xuewang Yang Hua;Yu YouchangPatent Agency Code: 37100Patent Agent: wu weiAbstract In the desulfurizing process, gas or liquid ammonia from sewage stripping unit is compound into ammonia water, which is fed to the upper part of… Read More »

Preparation of 2,4-dibromo-5-fluorobenzonitrile and 2,4-dibromo-5-fluorobenzoic acid by using ammonia oxidation process

Application Number: 00114642Application Date: 2000.06.20Publication Number: 1328996Publication Date: 2002.01.02Priority Information: International: C07C253/28;C07C255/49Applicant(s) Name: Wuhan Univ.Address: Inventor(s) Name: Huang Chi;Zheng QiongPatent Agency Code: 00000Patent Agent: Abstract The present invention discloses a novel compound-2,4-dibromo-5-fluorobenzonitrile and its preparation method, and preparation method of 2,4-dibromo-5-fluorobenzoic acid by using the said compound, i.e. it utilizes oxidation of 2,4-dibromo-5-fluoromethylphenylammonia to prepare… Read More »

New technological process of replacing lower gathering pipe in synthetic ammonia converting furnace

Application Number: 00126644Application Date: 2000.10.18Publication Number: 1348923Publication Date: 2002.05.15Priority Information: International: C01C1/04Applicant(s) Name: Baling Branch, China Petrochemical Corp., Ltd.Address: Inventor(s) Name: Li HaigenPatent Agency Code: 00000Patent Agent: Abstract The invention relates to a new technology for replacing lower collecting main of furnace tubes for the converter. It features that when the lower collecting main has… Read More »

Ammonia recovering process for liquid ammonia collator

Application Number: 00112083Application Date: 2000.02.15Publication Number: 1265437Publication Date: 2000.09.06Priority Information: International: D06C29/00Applicant(s) Name: Chen ZhaoxiangAddress: Inventor(s) Name: Chen Zhaoxiang;Tan HongxiuPatent Agency Code: 32102Patent Agent: xu dongtaoAbstract The present invention provides one simplified ammonia recovering process for liquid ammonia collator. The technological process features that ammonia vapor enters the low-pressure separation system, the reactant gas enters… Read More »

Method for producing formaldehyde by using crude methanol as coproduct of synthetic ammonia

Application Number: 00115013Application Date: 2000.03.21Publication Number: 1314334Publication Date: 2001.09.26Priority Information: International: C07C47/052Applicant(s) Name: Wujing Chemical Co., Ltd., ShanghaiAddress: Inventor(s) Name: Zhao FangbiPatent Agency Code: 31104Patent Agent: ying yunbengAbstract The production process includes the evaporation and oxidation of methanol and the absorption of formaldehyde. There are efficient adsorption filters connected to front and back of the… Read More »

Large nitrogen circulating and heating process in synthetic ammonia converting system

Application Number: 00126645Application Date: 2000.10.18Publication Number: 1348924Publication Date: 2002.05.15Priority Information: International: C01C1/04Applicant(s) Name: Baling Branch, China Petrochemical Corp, Ltd.Address: Inventor(s) Name: Li DewuPatent Agency Code: 00000Patent Agent: Abstract The invention relates to a nitrogen circulation and temp. rise technology for synthetic ammonia conversion system. It features that after the synthetic ammonia process gas (nitrogen) passes… Read More »

Process for preparing high-purity active zinc oxide by immersing in ammonia water and ammonium carbonate solution and complexing

Application Number: 00112249Application Date: 2000.04.30Publication Number: 1270144Publication Date: 2000.10.18Priority Information: International: C01G9/02Applicant(s) Name: Yang GuohuaAddress: Inventor(s) Name: Yang GuohuaPatent Agency Code: 32214Patent Agent: xia haichuAbstract A process for preparing high-purity active zinc oxide includes such steps as complex immersing of low-grade zinc oxide as raw material in mixture of ammonia water and ammonium dicarbonate, three-step… Read More »

Removing sulfur dioxide from industrial waste gas by ammonia regeneration circulation process

Application Number: 00116112Application Date: 2000.09.22Publication Number: 1345621Publication Date: 2002.04.24Priority Information: International: B01D53/50;B01D53/79;B01D53/96Applicant(s) Name: Zhang ZhideAddress: Inventor(s) Name: Zhang ZhidePatent Agency Code: 52100Patent Agent: yu dunhanAbstract In present invention the solutions of (NH4)2 CO2 or ammonia water or (NH4)2SO3, etc. is used as absorption agent to absorb SO2 in industrial water gas, the saturated absorption solution… Read More »

New technological process of replacing lower gathering pipe in synthetic ammonia converting furnace

Application Number: 00126644Application Date: 2000.10.18Publication Number: 1348923Publication Date: 2002.05.15Priority Information: International: C01C1/04Applicant(s) Name: Baling Branch, China Petrochemical Corp., Ltd.Address: Inventor(s) Name: Li HaigenPatent Agency Code: 00000Patent Agent: Abstract The invention relates to a new technology for replacing lower collecting main of furnace tubes for the converter. It features that when the lower collecting main has… Read More »

High-pressure methanation process for raw gas of synthetic ammonia

Application Number: 00113314Application Date: 2000.03.09Publication Number: 1313240Publication Date: 2001.09.19Priority Information: International: C01B3/34Applicant(s) Name: Hengyang Nitrogen Fertilizer PlantAddress: Inventor(s) Name: Huang Mingjin;Guo Chengyu;Yini MingdaPatent Agency Code: 43101Patent Agent: lu banAbstract A high-pressure methanating process for the raw gas of synthetic ammonia features that the overheat steam at 1.27 MPa is used to heat the raw gas… Read More »

High-effective ammonia synthesis ring process

Application Number: 00119611Application Date: 2000.08.14Publication Number: 1281821Publication Date: 2001.01.31Priority Information: International: C01B3/50;C01C1/04Applicant(s) Name: Ni DediAddress: Inventor(s) Name: Chen Yungen;Ni Dadi;He ZhengyanPatent Agency Code: 33203Patent Agent: lian shoujinAbstract The present invention relates to a high-effective ammonia synthesis ring new process, and is characterized by that it adopts a purified and refined charge gas which contains no… Read More »

Large nitrogen circulating and heating process in synthetic ammonia converting system

Application Number: 00126645Application Date: 2000.10.18Publication Number: 1348924Publication Date: 2002.05.15Priority Information: International: C01C1/04Applicant(s) Name: Baling Branch, China Petrochemical Corp, Ltd.Address: Inventor(s) Name: Li DewuPatent Agency Code: 00000Patent Agent: Abstract The invention relates to a nitrogen circulation and temp. rise technology for synthetic ammonia conversion system. It features that after the synthetic ammonia process gas (nitrogen) passes… Read More »

Methanation process for raw gas of synthetic ammonia

Application Number: 00113315Application Date: 2000.03.09Publication Number: 1313241Publication Date: 2001.09.19Priority Information: International: C01B3/40Applicant(s) Name: Hengyang Nitrogen Fertilizer PlantAddress: Inventor(s) Name: Huang Mingjin;Guo Chengyu;Yin MingdaPatent Agency Code: 43101Patent Agent: lu banAbstract A methanating process for raw gas of synthetic ammonia features that the ammonia catalyst whose main components is Fe3O4 replace the Ni catalyst in methanating process.… Read More »

Process for preparing ammonia cation free-radical modified single-layer membrane of carbon electrode

Application Number: 00121846Application Date: 2000.07.26Publication Number: 1306205Publication Date: 2001.08.01Priority Information: International: G01N27/30Applicant(s) Name: Changchun Inst of Applied Chemistry, Chinse Academy of SciencesAddress: Inventor(s) Name: Liu Jianyun;Cheng Long;Dong ShaojunPatent Agency Code: 22001Patent Agent: cao guizhenAbstract A process for preparing ammonia cations and free radicals modified carbon electrode includes dissolving the amino compound and long-chain diamido compound… Read More »

Condensate liquid recovery process of ammonia synthesis process

Application Number: 00113672Application Date: 2000.09.05Publication Number: 1341695Publication Date: 2002.03.27Priority Information: International: C10C1/04Applicant(s) Name: Baling Branch Office, China Petro-Chemical CorporationAddress: Inventor(s) Name: Wang Zhihua;Ling TaipingPatent Agency Code: 00000Patent Agent: Abstract The recovery process of liquor condensate in the process for synthetic ammonia is characterized by that said recovery process includes the following steps: making the liquor… Read More »

Platinum based alloy for ammonia oxidation catalyst and the catalyst net made therefrom

Application Number: 00122339Application Date: 2000.08.25Publication Number: 1339335Publication Date: 2002.03.13Priority Information: International: B01J23/62;C01B21/26Applicant(s) Name: Guiyan Platinum Industry Co., Ltd.Address: Inventor(s) Name: Sai Xingpeng;Hu Xin;Wen FeiPatent Agency Code: 53100Patent Agent: liu juanyiAbstract The platinum based alloy contains Rh 2-10 wt%, Ce 0.006-0.009 wt% Pd in an optional amount of 0-8 wt% and the rest is Pt. The… Read More »

Method for regenerating molecular sieve by using ammonia pyrolysis gas

Application Number: 00113673Application Date: 2000.09.05Publication Number: 1341485Publication Date: 2002.03.27Priority Information: International: B01J29/90;B01J38/04;C01C1/04Applicant(s) Name: Baling Branch Office, China Petro-Chemical CorporationAddress: Inventor(s) Name: Li DewuPatent Agency Code: 00000Patent Agent: Abstract The method for regenerating molecular sieve by using ammonia pyrolysis gas is characterized by using ammonia pyrolysis gas with temp. of 4 deg.C and pressure of about… Read More »

Low-temp catalytic process for removing nitroxide, ammonia, CO and hydrogen from industrial gas or waste gas

Application Number: 00122945Application Date: 2000.08.30Publication Number: 1340372Publication Date: 2002.03.20Priority Information: International: B01D53/48;B01D53/56;B01D53/86Applicant(s) Name: Dalian Inst of Chemicophysics, Chinese Academy of SciencesAddress: Inventor(s) Name: Wu Diyong;Qin Yongsheng;Wang ShudongPatent Agency Code: 21002Patent Agent: zhang chenAbstract A low-temp. catalytic process for removing Nox, NH3, CO and H2 from the industrial gas or waste gas containing O2 (3-20%), No… Read More »

Method for raising temp at entrance of stage-one converter for synthesizing ammonia and elongating service life of catalyst

Application Number: 00113677Application Date: 2000.09.08Publication Number: 1342597Publication Date: 2002.04.03Priority Information: International: C01B3/38Applicant(s) Name: Baling Branch, Chinese Petro-Chemical Co LtdAddress: Inventor(s) Name: Li DewuPatent Agency Code: 00000Patent Agent: Abstract A method for raising the temp. at inlet of a converter in the first section of synthesizing ammonia and elongating the service life of catalyst features that… Read More »

Cr-base catalyst for synthesizing low-carbon amines directly from synthetic gas and ammonia gas and its application

Application Number: 00123362Application Date: 2000.12.06Publication Number: 1356164Publication Date: 2002.07.03Priority Information: International: B01J23/26;B01J23/34;C07C209/00Applicant(s) Name: Dalian Inst of Chemicophysics, Chinese Academy of SciencesAddress: Inventor(s) Name: Wang Yi;Ding YunjiePatent Agency Code: 21002Patent Agent: zhang chenAbstract A Cr-base catalyst for synthesizing low-carbon amines (monomethylamine, dimethylamine, trimethylamine, etc) directly from synthetic gas and ammonia gas contains Al2O3 as carrier, Cr2O3… Read More »

Method for analyzing resultants in reaction process for preparing low-grade lipoamine by liquefied ammonia catalysis

Application Number: 00110577Application Date: 2000.06.28Publication Number: 1331414Publication Date: 2002.01.16Priority Information: International: G01N30/02;G01N30/50Applicant(s) Name: Dalian Inst of Chemicophysics, Chinese Academy of SciencesAddress: Inventor(s) Name: Lu Xin;Zhang Tongfeng;Zhao XinjiePatent Agency Code: 21002Patent Agent: zhang chenAbstract A method for analyzing all components of 8 amines as the resultants of preparing low-grade lipoamines from liquid ammonia by catalytic reaction… Read More »

Process for synthesizing ammonia by partial transform of CO and low-temp. conversion

Application Number: 00114383Application Date: 2000.02.23Publication Number: 1263864Publication Date: 2000.08.23Priority Information: International: C01B3/34;C01B3/38;C01B3/40Applicant(s) Name: Liu HongwenAddress: Inventor(s) Name: Liu HongwenPatent Agency Code: 42104Patent Agent: liu zhijuAbstract A process for partial conversion and low-temp transform of CO in the synthetic ammonia plant where coal is used to generate gas features that the Fe-Mo catalyst for partial conversion… Read More »

Cu-series catalyst for synthesizing low-carbon amines directly from synthetic gas and ammonia gas and its application

Application Number: 00123366Application Date: 2000.12.06Publication Number: 1356165Publication Date: 2002.07.03Priority Information: International: B01J23/72;B01J23/86;B01J23/889;C07C209/00Applicant(s) Name: Dalian Inst of Chemicophysics, Chinese Academy of SciencesAddress: Inventor(s) Name: Wang Yi;Ding YunjiePatent Agency Code: 21002Patent Agent: zhang chenAbstract A Cu-series catalyst for synthesizing low-carbon amines (monomethyl amine, dimethylamine, trimethylamine, etc) contains Al2O3 as carrier, CuO as active component (5-60 wt.%) and… Read More »

Oxygen enriching process without electric consumption by efficient membrane method and its application in preparing synthetic ammonia

Application Number: 00110662Application Date: 2000.07.13Publication Number: 1334137Publication Date: 2002.02.06Priority Information: International: B01D53/22Applicant(s) Name: Dalian Inst of Chemiophysics, Chinese Academy of SciencesAddress: Inventor(s) Name: Deng Maicun;Shi Wei;Shen GuanglinPatent Agency Code: 21002Patent Agent: zhang chenAbstract An oxygen-enriching process without electric consumption features that the air passes through air compressor, cleaning system and membrane separation system to obtain… Read More »

Method for preparing 2,4-dichlorophenylnitrile by using ammonia oxidation process and special-purpose catalyst

Application Number: 00114640Application Date: 2000.06.20Publication Number: 1328874Publication Date: 2002.01.02Priority Information: International: B01J27/14;B01J27/185;B01J27/186;B01J27/199;C07C253/24;C07C255/50Applicant(s) Name: Wuhan Univ.Address: Inventor(s) Name: Zheng Qiong;Huang Chi;Xie GuangyongPatent Agency Code: 00000Patent Agent: Abstract The present invention discloses a method for preparing 2,4-dichlorobenzonitrile by using ammonia oxidation process and its special-purpose catalyst. It is a multicomponent catalyst in which the V, Ti and… Read More »

Process for adsorbing acidic gas (CO2) from fume by ammonia water

Application Number: 00123369Application Date: 2000.12.06Publication Number: 1356156Publication Date: 2002.07.03Priority Information: International: B01D53/14;B01D53/62;B01D53/79Applicant(s) Name: National Research Center of Power-Station Combustion Engineering TechnologyAddress: Inventor(s) Name: Li Zhenzhong;Li Xin;Xiang ZheyuPatent Agency Code: 21002Patent Agent: xu zongfuAbstract A process for using ammonia water to absorb the acidic gas (CO2) from fume includes dusting and cooling fume, pressurizing, filling it… Read More »

Ammonia refrigeration system capable of cyclically uisng lubricant without loss

Application Number: 00111147Application Date: 2000.06.19Publication Number: 1329233Publication Date: 2002.01.02Priority Information: International: F25B1/00;F25B43/02Applicant(s) Name: Zhang BujianAddress: Inventor(s) Name: Zhang BujianPatent Agency Code: 00000Patent Agent: Abstract An ammonia refrigeration system capable of cyclically utilizing lubricant oil is comprised of compressor, condenser, oil-storing device, liquor-storing device, intermediate cooling device, low-pressure circulating barrel (or ammonia liquor separator), oil-cleaning device,… Read More »

Method for preparing 3,4-dichlorophenylnitrile by using ammonia oxidation process and its special-purpose catalyst

Application Number: 00114641Application Date: 2000.06.20Publication Number: 1328875Publication Date: 2002.01.02Priority Information: International: B01J27/185;B01J27/186;B01J27/187;B01J27/188;B01J27/195;C07C253/28;C07C255/50Applicant(s) Name: Wuhan Univ.Address: Inventor(s) Name: Zheng Qiong;Huang Chi;Xie GuangyongPatent Agency Code: 00000Patent Agent: Abstract The present invention discloses a method for preparing 3,4-dichlorobenzonitrile by using ammonia oxidation process and its special-purpose catalyst. It is a multicomponent catalyst: V a P b C c… Read More »

Catalyst for producing ammonia and dimethyl amine by decomposing unsym-dimethyl hydrazine

Application Number: 00110235Application Date: 2000.03.22Publication Number: 1314306Publication Date: 2001.09.26Priority Information: International: B01J23/44;C01C1/08;C06D5/04;C07C211/04Applicant(s) Name: Dalian Inst. of Chemical Physics, Chinese Academy of SciencesAddress: Inventor(s) Name: Lin Peizi;Luo Hongyuan;Ding YunjiePatent Agency Code: 21002Patent Agent: zhang chenAbstract The catalyst for decomposing unsym-dimethyl hydrazine to produce ammonia and dimethyl amine consists of main active component metal palladium in 0.1-30… Read More »