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公开(公告)号：US4186028A
公开(公告)日：1980-01-29
申请号：US911008
申请日：1978-05-30
申请人： Peter Woditsch , Gunther Teichmann , Gunter Linde , Gunter Lailach , Fritz Rodi
发明人： Peter Woditsch , Gunther Teichmann , Gunter Linde , Gunter Lailach , Fritz Rodi
CPC分类号： B01F17/0064 , C09D17/004
摘要： In an aqueous fluid dispersible filler or pigment suspension containing a dispersion aid, the improvement which comprises employing as the dispersion aid about 0.01 to 1% by weight, based on solids, of a phosphonocarboxylic acid or a salt thereof. The pigment may be TiO.sub.2 and be present in from 30 to 80% concentration. The dispersion aid may be phosphonobutane-1, 2,4-tricarboxylic acid or a salt, and an amine or alkanolamine may also be present.
摘要翻译： 在含有分散助剂的水性流体分散性填料或颜料悬浮液中，其改进包括使用基于固体的基于固体的约0.01至1重量％的膦酰基羧酸或其盐。 颜料可以是TiO 2，并且以30至80％的浓度存在。 分散助剂可以是膦酰基丁烷-1,2,4-三羧酸或其盐，也可以存在胺或链烷醇胺。
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2.发明授权
公开(公告)号：US5837635A
公开(公告)日：1998-11-17
申请号：US840790
申请日：1997-04-16
IPC分类号： B01D53/86 , B01D53/94 , B01D53/96 , B01J23/30 , B01J23/90 , B01J23/92 , B01J37/00 , B01J38/60 , B09B3/00 , C01G41/00 , C22B34/34 , C22B34/36 , B01J20/34
CPC分类号： C22B34/365 , B01J23/92 , B01J37/0036 , B01J38/60 , C22B34/345 , Y02P10/23
摘要： The invention relates to a process for re-processing deactivated DENOX catalysts on the basis of Ti/V/Mo/W mixed oxides.
摘要翻译： 本发明涉及一种基于Ti / V / Mo / W混合氧化物重新处理失活的DENOX催化剂的方法。
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公开(公告)号：US4931269A
公开(公告)日：1990-06-05
申请号：US262144
申请日：1988-10-21
申请人： Gunter Lailach , Rudolf Gerken
发明人： Gunter Lailach , Rudolf Gerken
CPC分类号： C01B17/60 , B01D53/507 , C01B17/74
摘要： A process for the removal of dust and sulphur dioxide from hot exhaust gases which have a low hydrogen halide content and the reheating of the purified exhaust gases, wherein(a) the hot exhaust gases are cooled to temperatures below 135.degree. C. by scrubbing with sulphuric acid,(b) sulphuric acid containing solids and dissolved metal sulphates is then separated from the exhaust gases from (a),(c) the exhaust gases from (b) are cooled to temperatures of 50.degree. to 70.degree. C. by scrubbing with 15 to 50% sulphuric acid,(d) and desulphurized with the formation of sulphuric acid,(e) and reheated to temperatures of 70.degree. to 90.degree. C. by scrubbing with 50 to 65% sulphuric acid while the sulphuric acid discharged from (c) is concentrated and(f) the sulphuric acid from stage (a) together with the solid particles contained therein is cooled with the pure sulphuric acid from (e) in heat exchangers.The process according to the invention is particularly suitable for the purification of hot exhaust gases which are at a temperature of 170.degree. to 500.degree. C.
摘要翻译： 一种从具有低卤化物含量和纯化废气再热的热废气中去除灰尘和二氧化硫的方法，其中（a）将热废气通过以下方式洗涤而被冷却至低于135℃的温度： 硫酸，（b）含硫固体和溶解的金属硫酸盐然后从（a），（c）的废气中分离，（b）的废气通过洗涤被冷却至50至70℃的温度 用15〜50％的硫酸，（d），硫酸形成硫酸脱硫，（e），再用50〜65％的硫酸洗涤再次加热至70〜90℃， （c）浓缩，（f）来自步骤（a）的硫酸与其中所含的固体颗粒一起用（e）在热交换器中的纯硫酸冷却。 根据本发明的方法特别适合于在170℃至500℃的温度下净化热废气。
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公开(公告)号：US4824655A
公开(公告)日：1989-04-25
申请号：US097241
申请日：1987-09-15
申请人： Gunter Lailach , Rudolf Gerken
发明人： Gunter Lailach , Rudolf Gerken
CPC分类号： C01B17/507 , C01B17/501 , Y02P20/129
摘要： A process for the preparation of sulphur dioxide by the thermal decomposition of metal sulphates in a fluidized bed reactor with sulphur-containing reducing agents and energy suppliers, characterized in that a mixture comprising the metal sulphates, the sulphur-containing reducing agents and 75 to 99% of the energy suppliers is fed into the fluidized bed reactors and the remainder of the energy suppliers is introduced separately into the fluidized layer of the fluidized bed reactor.
摘要翻译： 一种通过在含硫还原剂和能源供应商的流化床反应器中热分解金属硫酸盐来制备二氧化硫的方法，其特征在于包含金属硫酸盐，含硫还原剂和75至99 将能量供应商的百分比进料到流化床反应器中，其余能量供应商分别引入流化床反应器的流化层。
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公开(公告)号：US5229087A
公开(公告)日：1993-07-20
申请号：US523107
申请日：1990-05-14
IPC分类号： C01B17/90 , C01G23/053 , C22B34/12
CPC分类号： C01B17/901 , C01G23/0532 , C22B34/125 , C22B34/1259
摘要： A process for the preparation of titanium dioxide by the sulphate process in which titanium raw materials are decomposed with sulphuric acid, the resulting titanyl sulphate is hydrolyzed, the waste acid is separated from the hydrolyzate and evaporated to a concentration of 60 to 70%, sulphuric acid is separated from the solid metal sulphates, and the sulphuric acid which has been concentrated by evaporation is used again for the decomposition of the titanium raw material, the improvement wherein the 60 to 70% sulphuric acid is concentrated to 70 to 80% H.sub.2 SO.sub.4 in a further evaporation stage and the concentration of a part of this sulphuric acid is raised to a concentration of 98 to 99% H.sub.2 SO.sub.4 by the absorption of SO.sub.3 and then used together with the remainder of the above-mentioned 70 to 80% sulphuric acid for the decomposition of titanium raw materials.
摘要翻译： 通过硫酸盐工艺制备二氧化钛的方法，其中钛原料用硫酸分解，得到的硫酸氧钛被水解，废酸与水解产物分离并蒸发至60至70％的浓度，硫酸 酸与固体金属硫酸盐分离，通过蒸发浓缩的硫酸再次用于钛原料的分解，其中将60-70％硫酸浓缩至70-80％H 2 SO 4的改进 进一步蒸发阶段，通过吸收SO 3将该硫酸的一部分浓度提高至98至99％H 2 SO 4的浓度，然后与剩余的上述70-80％硫酸一起用于 分解钛原料。
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公开(公告)号：US4731230A
公开(公告)日：1988-03-15
申请号：US67499
申请日：1987-06-29
CPC分类号： C01G23/024 , C22B34/1222 , C22B34/1231 , Y02P10/23
摘要： An improved process for the preparation of TiCl.sub.4 comprising(a) chlorinating a raw material containing titanium and vanadium impurities to produce a crude TiCl.sub.4 reaction product,(b) separating the crude reaction product into solid by-products and TiCl.sub.4 -containing liquid,(c) reacting the TiCl.sub.4 -containing liquid with a reducing agent whereby vanadium impurities are converted into solid compounds, and(d) separating TiCl.sub.4 from the solid vanadium compounds, is improved by adding solid products of the vanadium reduction reactions to the crude TiCl.sub.4 reaction product prior to the separating step (b).
摘要翻译： 一种用于制备TiCl 4的改进方法，包括（a）将含有钛和钒杂质的原料氯化以产生粗TiCl 4反应产物，（b）将粗反应产物分离成固体副产物和含TiCl4的液体，（c ）使含TiCl4的液体与还原剂反应，由此钒杂质转化为固体化合物，并且（d）从固体钒化合物中分离出TiCl4，通过将钒还原反应的固体产物加入到粗TiCl 4反应产物中得到改进 到分离步骤（b）。
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公开(公告)号：US4902485A
公开(公告)日：1990-02-20
申请号：US275299
申请日：1988-11-23
申请人： Eckhard Bayer , Gunter Lailach
发明人： Eckhard Bayer , Gunter Lailach
IPC分类号： C01G23/053 , C01G23/08 , C22B34/12
CPC分类号： C01G23/08 , C22B34/125 , Y02P20/129
摘要： A process for the production of TiO.sub.2 pigments by the sulfate process by digestion of titanium-containing raw materials with sulfuric acid, hydrolysis of the titanyl sulfate formed, purification of the hydrolyzate and calcination of the hydrolyzate in rotary kilns, wherein the calcination conditions are regulated through adjustment of the SO.sub.2 content of the waste gases issuing from the rotary kilns used for calcination.
摘要翻译： 通过用硫酸消化含钛原料的硫酸盐工艺生产TiO 2颜料的方法，形成硫酸氧钛的水解，水解产物的纯化和回转窑中的水解产物的煅烧，其中煅烧条件被调节 通过调整用于煅烧的回转窑发出的废气中的SO2含量。
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公开(公告)号：US4663490A
公开(公告)日：1987-05-05
申请号：US710895
申请日：1985-03-12
申请人： Rudolf Gerken , Gunter Lailach , Dieter Becher , Harro Witt
发明人： Rudolf Gerken , Gunter Lailach , Dieter Becher , Harro Witt
IPC分类号： C07C67/00 , C07C201/00 , C07C201/08 , C07C205/06 , C07C79/10
CPC分类号： C07C201/08
摘要： In the production of dinitrotoluene by a two-stage reaction of toluene with nitric acid in the presence of sulphuric acid, wherein toluene is nitrated to mononitrotoluene in the first stage using spent acid from the second stage, and the mononitrotoluene is nitrated to dinitrotoluene in the second stage using concentrated spent acid from the first stage, the improvement which comprises concentrating spent acid under vacuum in an indirectly-heated evaporator and feeding mononitrotoluene into the superheated vapor of the evaporator.
摘要翻译： 在硫酸存在下，通过甲苯与硝酸的两步反应制备二硝基甲苯，其中使用第二阶段的废酸在第一阶段将甲苯硝化为一硝基甲苯，并将一硝基甲苯硝化为二硝基甲苯 第二阶段使用来自第一阶段的浓缩废酸，其改进包括在间接加热的蒸发器中真空浓缩废酸，并将单硝基甲苯加入到蒸发器的过热蒸气中。
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公开(公告)号：US6106794A
公开(公告)日：2000-08-22
申请号：US364601
申请日：1999-07-30
申请人： Gunter Lailach , Andreas Bulan , Gunter Buss
发明人： Gunter Lailach , Andreas Bulan , Gunter Buss
CPC分类号： C01D3/02
摘要： Process for the preparation of sodium fluoride from sodium hydroxide solution and hydrogen fluoride, characterized in that at least 45% strength by weight, in particular 50% strength by weight, sodium hydroxide solution and anhydrous hydrogen fluoride are introduced separately into a saturated NaF solution in which 4 to 50% by weight, preferably 5 to 30% by weight, solid NaF are suspended and the temperature of which is in the range from 20 to 80.degree. C., preferably 30 to 60.degree. C.
摘要翻译： 用于从氢氧化钠溶液和氟化氢制备氟化钠的方法，其特征在于将氢氧化钠溶液和无水氟化氢的至少45重量％，特别是50重量％的重量，分别引入饱和的NaF溶液中 其中固体NaF为4〜50重量％，优选为5〜30重量％，其温度为20〜80℃，优选为30〜60℃。
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公开(公告)号：US5271919A
公开(公告)日：1993-12-21
申请号：US730031
申请日：1991-07-12
申请人： Gunter Lailach , Rudolf Gerken
发明人： Gunter Lailach , Rudolf Gerken
CPC分类号： C01B17/501 , C01B17/507 , Y02P20/129
摘要： A process for the thermal decomposition of metal sulphate mixtures at temperatures from 800.degree. to 1100.degree. C. under oxidizing conditions, in which the metal sulphate mixtures are mixed with roasting residue and reacted together with fuels in the decomposition reactor to form roasting residue and SO.sub.2 -containing gases from roasting wherein the roasting residue admixed with the sulphate mixture is the finely divided fraction of the resulting roasting residue which is separated from the stream of gas in an electrostatic gas purification apparatus and returned to the decomposition reactor.This procedure has an advantageous influence on the formation of coarse roasting residue and also significantly reduces the proportion of undecomposed, water soluble sulphates in the roasting residue.
摘要翻译： 在金属硫酸盐混合物与焙烧残渣混合并与分解反应器中的燃料一起反应以形成焙烧残渣和SO 2的方法，在800至1100℃的温度下，在金属硫酸盐混合物的热分解过程中， 来自焙烧的含有气体，其中与硫酸盐混合物混合的焙烧残渣是在静电气体净化装置中与气流分离的所得焙烧残渣的细碎部分，并返回到分解反应器。 该方法对粗焙烧残渣的形成具有有利影响，并且显着降低了未分解的水溶性硫酸盐在焙烧残渣中的比例。
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