Tag Archives: Alkali

Oil recovery method using black paper-making liquor as oil displacing alkali

Application Number  00129382 Application Date  2000.12.05 Publication Number  1297100 Publication Date  2001.05.30 Priority Information     International Classification  E21B43/22   Applicant(s) Name  Petroleum Univ. (Huadong)   Address     Inventor(s) Name  Zhao Fulin;Gao Xiaoyong;Chang Guicai   Patent Agency Code  11013 Patent Agent  zhao dongye AbstractAn oil recovery method using black paper-making liquor as the alkali… Read More »

Process for synthesizing vanillin from alkali lignin by green chemical method

Application Number: 00117415Application Date: 2000.09.14Publication Number: 1285395Publication Date: 2001.02.28Priority Information: International: C11B9/00Applicant(s) Name: Huanan Agriculture Univ.Address: Inventor(s) Name: Zhou Qiang;Chen ZhonghaoPatent Agency Code: 44201Patent Agent: wu hongdaAbstract The preparation process of vanillin from alkali lignin by green chemical synthesis method includes the steps of industrial-level lignin purification, catalyst for ming, multi-phase catalytic oxidation reaction, catalyst… Read More »

Method for operating alkali metal chloride electrolytic cell

Application Number: 00120337Application Date: 2000.07.07Publication Number: 1280211Publication Date: 2001.01.17Priority Information: 1999/7/7 JP 193241/99International: C25B1/46;C25B15/02;C25B15/08Applicant(s) Name: Toa Synthetic Corp.Address: Inventor(s) Name: Sakata Akihiro;Saiki Koji;Watanabe takeshiPatent Agency Code: 31100Patent Agent: chen wenjingAbstract A method of operating an alkali chloride electrolytic cell, comprising: providing an alkali chloride electrolytic cell comprising a gas diffusion cathode and a cation-exchange membrane,… Read More »

Method and apparatus for protecting alkali metal chloride electrolytic cell

Application Number: 00120344Application Date: 2000.07.07Publication Number: 1280212Publication Date: 2001.01.17Priority Information: 1999/7/7 JP 193242/99International: C25B1/46;C25B9/08;C25B15/00Applicant(s) Name: Toa Synthetic Corp.Address: Inventor(s) Name: Sakata Akihiro;Saiki Koji;Watanabe TakeshiPatent Agency Code: 31100Patent Agent: chen wenjingAbstract A method of protecting an alkali chloride electrolytic cell having a gas diffusion cathode, which comprises, on the occasion when the operation of the electrolytic… Read More »

Process for comprehensive treatment of acid and alkali dregs

Application Number: 00110593Application Date: 2000.06.28Publication Number: 1330968Publication Date: 2002.01.16Priority Information: International: A62D3/00;B01D53/34;C10G17/10;C10G19/08Applicant(s) Name: Chinese Petro-Chemical Group CoAddress: Inventor(s) Name: Liu Zhongsheng;Zhang ZhongyingPatent Agency Code: 21102Patent Agent: li weiAbstract A process for comprehensively treating acid dregs and alkali dregs features that the acid dregs are cracked into SO2 gas, which is then used to neutralize and… Read More »

Composite alkali metal releasing agent and its releasing device

Application Number: 00121108Application Date: 2000.07.26Publication Number: 1288247Publication Date: 2001.03.21Priority Information: International: H01J1/34;H01J9/12Applicant(s) Name: Research Inst. Of Non-ferrous Metals Technological EconomyAddress: Inventor(s) Name: Chen Yutian;Xu Jinxiang;Liu YuanchaoPatent Agency Code: 11028Patent Agent: li yingchunAbstract It is characterised by that (1) using alkali metal, ie, potassium, sodium and caesium alloy as metal reteasing agent; and (2) using zirconium… Read More »

Agitator bath for pre-treating refractory As-containing gold ore by impregnating in strong alkali solution

Application Number: 00110679Application Date: 2000.07.19Publication Number: 1334348Publication Date: 2002.02.06Priority Information: International: C22B3/02Applicant(s) Name: Shenyang Inst of Metals Research, Chinese Academy of SciencesAddress: Inventor(s) Name: Meng Yuqun;Wu Minjie;Suo ShaolingPatent Agency Code: 21002Patent Agent: zhang chenAbstract An agitator bath for pretreating refractory As-contained gold ore by forced immersion in alkali solution is composed of electric motor, agitating… Read More »

Electrolytic batteries for production of alkali metals

Application Number: 00122264Application Date: 2000.06.11Publication Number: 1279304Publication Date: 2001.01.10Priority Information: 1999/6/11 DE 19926724.3International: C25C3/02Applicant(s) Name: BASF AGAddress: Inventor(s) Name: G. Huber;H. Pittel;K. Schler-AndertPatent Agency Code: 72001Patent Agent: lu xinhuaAbstract An electrolytic cell comprises an agitated, alkali metal amalgam-containing anode, an alkali metal ion-conducting solid electrolyte and a cathode, wherein the solid electrolyte and the cathode… Read More »

Method for raising nitrite/nitrate ratio of alkali absorption mother liquor and alkali absorptivity for nitric tail gas

Application Number: 00112447Application Date: 2000.08.04Publication Number: 1280029Publication Date: 2001.01.17Priority Information: International: B01D53/56;B01D53/78Applicant(s) Name: Nanhua Group Inst.Address: Inventor(s) Name: Liu LisanPatent Agency Code: 32114Patent Agent: li gongbeiAbstract The present invention relates to an alkali absorbing technology of nitric tail gas and optimized method of raising absorption efficiency, and features the optimization in enclosed path number and… Read More »

Selective alddol reaction of acetone to prepare diacetone alcohol by using alkali solid catalyst

Application Number: 00122689Application Date: 2000.08.16Publication Number: 1307932Publication Date: 2001.08.15Priority Information: 1995/1/6 FR 9500094International: B01J21/10;C07C49/17Applicant(s) Name: Elf Atochem S.A.Address: Inventor(s) Name: Rimi Tahill;Dider Dikite;Frangis PhegrasPatent Agency Code: 11105Patent Agent: wu xiaonanAbstract The aldolization is characterized by the use of a solid basic catalyst which has the following general formula[(Mg<2+>)1-x(Al<3+>)x(OH<->)2]+x[(OH<->)x(H2O)n]<->x(II)wherein 0.20<=x<=0.33 and n has a value of… Read More »

Process of evaporating cyclohexane oxidizing waste alkali liquor

Application Number: 00113584Application Date: 2000.07.29Publication Number: 1336331Publication Date: 2002.02.20Priority Information: International: C02F1/04;C07C45/27Applicant(s) Name: Baling Branch, China Petrochemical Corp., Ltd.Address: Inventor(s) Name: Song Xingxing;Huang Jing;Fu SongbaoPatent Agency Code: 00000Patent Agent: Abstract The present invention relates to method of evaporating cyclohexane oxidative waste alkali liquor, it is characterized in that waste alkali liquor evaporation catalyst composed of… Read More »

Aluminiu, boron silicate glass without alkali and application thereof

Application Number: 00124048Application Date: 2000.08.21Publication Number: 1285325Publication Date: 2001.02.28Priority Information: 1999/8/21 DE 19939789.9International: C03C3/093;C03C3/108;C03C3/11;G02F1/13;H01L31/02;H01K1/32Applicant(s) Name: Schott GlasswerkeAddress: Inventor(s) Name: U. Boichert;T. Pufiphere;P. BricsPatent Agency Code: 72001Patent Agent: pang lizhiAbstract Alkali-free aluminoborosilicate glass comprises (in wt.%): 50-70 SiO2, 0.5-15 B2O3, 10-25 Al2O3, 0-10 MgO, 0-12 CaO, 0-12 SrO, 0-15 BaO, 8-26 MgO + CaO + SrO… Read More »

Efficient compound fertilizer resisting drought, salt and alkali

Application Number: 00113891Application Date: 2000.07.17Publication Number: 1334261Publication Date: 2002.02.06Priority Information: International: C05G3/00;C05G3/04Applicant(s) Name: Yang ZongxianAddress: Inventor(s) Name: Yang ZongxianPatent Agency Code: 62002Patent Agent: wang yushuangAbstract An efficient compound fertilizer of resisting droughts, salt and alkali is prepared from N, P and K elements, humic acid resisting drought, salt and alkali, S and trace element through… Read More »

Reagent formula for field discrimination of total alkali value of oil quality of internal combustion engine oil

Application Number: 00115010Application Date: 2000.03.21Publication Number: 1263264Publication Date: 2000.08.16Priority Information: International: G01N31/22Applicant(s) Name: Shanghai Jiaotong Univ.Address: Inventor(s) Name: Chen Ming;Wang Chengtao;Tao DehuaPatent Agency Code: 31201Patent Agent: wang tilinAbstract The formula of reagent for determining alkaline agent content being in internal combustion engine oil includes: 60-90 deg.C petroleum ether, 4.9-5.1 ml; glacial acetic acid, 2.4-2.6 ml;… Read More »

Dynamic tester for alkali refining anti-emulsion of diesel oil

Application Number: 00117006Application Date: 2000.07.06Publication Number: 1333323Publication Date: 2002.01.30Priority Information: International: C10G19/02;C10G32/02Applicant(s) Name: Huadong Univ. of Science and EngineeringAddress: Inventor(s) Name: Xu Xinru;Yang Yunming;Li ShaopingPatent Agency Code: 31100Patent Agent: gu junfengAbstract The present invention provides a dynamic test equipment for diesel oil alkali refining non-emulsification, and said equipment incldues: a feeding pipe; a mixing tank… Read More »

Process for preparing catalyst used in multi-phase catalytic oxidation of alkali lignin

Application Number: 00117349Application Date: 2000.08.16Publication Number: 1280881Publication Date: 2001.01.24Priority Information: International: B01J29/06;C01B39/02Applicant(s) Name: Huanan Agricultural UnivAddress: Inventor(s) Name: Zhou Qiang;Chen ZhonghaoPatent Agency Code: 44201Patent Agent: wu hongdaAbstract A catalyst for multi-phase catalytic oxidization of alkali lignin is prepared through preparing Si-Al gel, crystallizing, washing, baking 1 steam treating, calcining, exchanging cations, washing, baking and calcining.… Read More »

Process for final cooling, alkali washing and fine desulfurizing of coke oven gas

Application Number: 00110168Application Date: 2000.02.29Publication Number: 1263932Publication Date: 2000.08.23Priority Information: International: C10K1/12Applicant(s) Name: Anshan General Design Inst. of Coking Refractory Materials, Chinese MetallurgicaAddress: Inventor(s) Name: Yu Yilin;Zhang Xingzhu;Wu ZhanxianPatent Agency Code: 21204Patent Agent: zhang qunAbstract A process for purifying the coke oven gas containing CO as combustible gas includes such steps as desulfurizing by ammonia… Read More »

Process for preparing sodium sulfite from liquid hydrocarbon or waste alkali solution of gasoline

Application Number: 00110053Application Date: 2000.01.20Publication Number: 1305954Publication Date: 2001.08.01Priority Information: International: A62D3/00;C01D5/14;C01D5/16Applicant(s) Name: Lu ChangshengAddress: Inventor(s) Name: Lu ChangshengPatent Agency Code: 21103Patent Agent: guo lihuaAbstract A process for preparing sodium sulfite from liquid hydrocarbon or waste alkaline solution of gasoline includes introducing the mixed gas of SO2 generated by combustion of sulfur to the bottom… Read More »

Ternary composite system of alkali, mixed surfactant and polymer for displacement of reservoir oil and its application

Application Number: 00105111Application Date: 2000.03.26Publication Number: 1284534Publication Date: 2001.02.21Priority Information: International: C09K7/02Applicant(s) Name: Gao ShutangAddress: Inventor(s) Name: Gao ShutangPatent Agency Code: 00000Patent Agent: Abstract Of the ternary composite system, the mixed surfactant contains: the mixture of alkyl aryl sulfonate and natural carboxylate 50-60 wt%, lower alcohol 0-10 wt%, dihydric alcohol 0-5 wt%, inorganic salt 0-5… Read More »

Process for treating black digestion liquid generated by paper alkali pulping

Application Number: 00105036Application Date: 2000.04.05Publication Number: 1316567Publication Date: 2001.10.10Priority Information: International: D21C11/04Applicant(s) Name: Li FengningAddress: Inventor(s) Name: Li FengningPatent Agency Code: 00000Patent Agent: Abstract A treating method for steaming and boiling black liquor of soda pulping process in paper making features that CaO2 and polyacrylamide are added to the high-temperature and high-concentrated black liquor and… Read More »

Method for preparing engineering earth from alkali dregs

Application Number: 00104288Application Date: 2000.05.27Publication Number: 1325767Publication Date: 2001.12.12Priority Information: International: B09B3/00Applicant(s) Name: Qiao XihaiAddress: Inventor(s) Name: Qiao XihaiPatent Agency Code: 00000Patent Agent: Abstract A process for preparing engineering earth from alkali dregs includes such steps as proportionally mixing the alkali dregs with needed auxiliary materials in situ, and stirring by stirrer. Its advantages are… Read More »

Preparation of alkali solution of beet

Application Number: 00103853Application Date: 2000.03.03Publication Number: 1270164Publication Date: 2000.10.18Priority Information: 1999/3/5 US 09/263469International: C07C227/16;C07C229/00;C07C229/12Applicant(s) Name: Air Products and Chemicals Inc.Address: Inventor(s) Name: D. Laplasade;W. E. Carol;F. J. WallerPatent Agency Code: 72001Patent Agent: guan lixinAbstract Betaine is produced by the oxidation of a choline salt in the presence of a base and a supported noble metal… Read More »

Cyclic process for treating black paper-making liquid of alkali pulping to recover useful resource

Application Number: 00103238Application Date: 2000.03.17Publication Number: 1262359Publication Date: 2000.08.09Priority Information: International: D21C11/04Applicant(s) Name: Ecological Environment Research Center, Chinese Academy of SciencesAddress: Inventor(s) Name: Mu Huanzhen;Yang Wenbo;Yao ChunliPatent Agency Code: 00000Patent Agent: Abstract A cyclic process for treating the black paper-making liquid of alkali pulping to recover useful resource include such steps as regulating concentration of… Read More »

Alkali recovery from paper making black liquor by wet method

Application Number: 00100645Application Date: 2000.01.26Publication Number: 1259600Publication Date: 2000.07.12Priority Information: International: D21C11/04Applicant(s) Name: Sun LianchaoAddress: Inventor(s) Name: Sun Lianchao;Xu WeiPatent Agency Code: 00000Patent Agent: Abstract The present invention relates to method of black liquor wet method alkali recovery, which includes: use sulfur dioxide as acidifying agent to acidify the black liquor of alkali method papermaking… Read More »