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公开(公告)号：US20210061709A1
公开(公告)日：2021-03-04
申请号：US17012141
申请日：2020-09-04
申请人： VHSC, LTD.
摘要： Methods of recovering coal combustion products (CCPs) from coal combination byproducts are disclosed. The methods include compiling coal combustion byproducts (e.g., lignite coal and/or bituminous coal), grinding the coal combustion byproducts to form ground coal combustion byproducts with a maximum particle size of 40 microns, and separating the ground coal combustion byproducts to yield CCPs using an electrostatic precipitator. The following CCPs can be separated from the coal combination byproducts using the presently disclosed methods: fly ash, bottom ash, scrubber materials, and raw coal.
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公开(公告)号：US5254230A
公开(公告)日：1993-10-19
申请号：US916299
申请日：1992-07-17
申请人： Vijay K. Joshi , Jawahar C. Parekh
发明人： Vijay K. Joshi , Jawahar C. Parekh
IPC分类号： C01F7/00 , C01F7/48 , C01F7/56 , C01F7/66 , C01F7/68 , C01F11/36 , C01F11/46 , C01F11/48 , C01B7/00
摘要： Processes are provided for preparing basic aluminum compounds of Formula I:Al.sub.2 (OH).sub.6-a X.sub.a (I)wherein X is Cl.sup.-, Br.sup.-, F.sup.-, I.sup.-, SO.sub.4.sup.= or NO.sub.3.sup.- and a is about 0.9 to 4, the compound being characterized by size exclusion chromatography as having a Band I percent aluminum value of about 5% or less and a Band II percent aluminum value of about 50% to 90%, which comprise (a) suspending an aluminum metal in an aqueous medium to form a slurry, (b) applying ultrasonic energy to the slurry, (c) reacting the sonicated slurry with an aluminum compound of Formula IIAl.sub.n X.sub.m (II)or an acid of Formula III:H.sub.n X (III)wherein X is Cl.sup.-, Br.sup.-, F.sup.-, I.sup.-, SO.sub.4.sup.= or NO.sub.3.sup.-, n is 1 or 2 and m is 3, at a temperature of about 45.degree. C. to 100.degree. C. to form a reaction product.
摘要翻译： 提供制备式I的碱性铝化合物的方法：其中X是Cl - ，Br-，F-，I-，SO 4 =或NO 3 - 的Al 2（OH）6-a X a（I），a是约0.9-4， 该化合物的特征在于尺寸排阻色谱法，其具有约5％或更低的I级铝值，并且具有约50％至90％的Band II％铝值，其包含（a）将铝金属悬浮在水性介质 （b）向浆料中施加超声能量，（c）将超声处理的浆料与式IIAlnXm（II）的铝化合物或式III的酸：其中X是Cl-的HnX（III）反应， Br-，F-，I-，SO4 =或NO3-，n为1或2，m为3，在约45℃至100℃的温度下反应形成反应产物。
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3.发明授权Process for the recovery of magnesium and/or nickel by liquid-liquid extraction 失效通过液 - 液萃取回收镁和/或镍的方法
公开(公告)号：US4431615A
公开(公告)日：1984-02-14
申请号：US428056
申请日：1982-09-29
申请人： Georges Gabra
发明人： Georges Gabra
CPC分类号： C01G53/003 , C01F5/42 , C22B3/0095 , Y02P10/234
摘要： The recovery of substantially pure magnesium and/or nickel sulphite which is present in a solid starting meterial. The latter is treated with gaseous SO.sub.2 in water, the solution obtained is treated by a liquid-liquid extraction, to give an aqueous phase and an organic phase and the magnesium and/or nickel sulphite is recovered from the aqueous phase. With this process, it is possible to obtain a magnesium salt of high purity.
摘要翻译： 基本上纯的镁和/或亚硫酸镍的回收，其以固体起始量存在。 后者用水中的气态SO 2处理，所得溶液通过液 - 液萃取处理，得到水相和有机相，并从水相中回收镁和/或亚硫酸镍。 通过该方法，可以得到高纯度的镁盐。
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4.发明授权Preparation of dicalcium phosphate from phosphate rock by the use of sulfur dioxide, water, and carbonyl compounds 失效通过使用二氧化硫，水和碳化合物从磷酸盐岩中制备磷酸氢钙
公开(公告)号：US4113842A
公开(公告)日：1978-09-12
申请号：US779038
申请日：1977-03-18
CPC分类号： C01F11/48 , C01B25/324
摘要： A method of preparing dicalcium phosphate from phosphate rock wherein the rock is treated with a mixture of water, carbonyl, and sulfur dioxide. Solids are separated from the liquid phase. The solid phase consists of a mixture of gangue, and calcium .alpha.-hydroxysulfonate. Carbonyl and part of the sulfur dioxide are recovered from the solid by low temperature thermal decomposition. Dicalcium phosphate is precipitated from the liquid phase by partial distilling of SO.sub.2. All carbonyl is recovered for recycle.
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5.发明授权Method for removing sulfur dioxide in the form of calcium sulfite from combustion exhaust gas 失效从燃烧废气中除去亚硫酸钙形式的二氧化硫的方法
公开(公告)号：US3989796A
公开(公告)日：1976-11-02
申请号：US398426
申请日：1973-09-18
CPC分类号： B01D53/501
摘要： There is disclosed a method wherein sulfur dioxide contained in combustion exhaust gas is absorbed in an aqueous alkali sulfite solution to produce a corresponding alkali bisulfite and the resultant aqueous alkali bisulfite solution is added with calcium carbonate to form calcium sulfite, the method comprising wet-powdering the calcium carbonate into a particle size within a range of 0.1 - 30 .mu. in a slurry form by the use of a part of a filtrate which is obtained by separating calcium sulfite from the reaction solution, and re-using the remainder of the filtrate as an aqueous alkali sulfite solution for absorbing sulfur dioxide, whereby substantially no waste water is discharged out of the reaction system and sulfur dioxide can be recovered in the form of highly pure calcium sulfite.
摘要翻译： 公开了一种方法，其中包含在燃烧废气中的二氧化硫被吸收在碱金属亚硫酸盐水溶液中以产生相应的碱式亚硫酸氢盐，并且将所得的碱式亚硫酸氢钠水溶液加入碳酸钙形成亚硫酸钙，该方法包括湿法粉碎 通过使用通过从反应溶液中分离出亚硫酸钙获得的一部分滤液，将浆料形式的碳酸钙调制成粒度在0.1-30μm范围内的粒度，并将剩余的滤液重新用作 用于吸收二氧化硫的碱性亚硫酸盐水溶液，从而基本上没有废水从反应体系中排出，二氧化硫可以以高纯度亚硫酸钙的形式回收。
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公开(公告)号：US3918521A
公开(公告)日：1975-11-11
申请号：US48281574
申请日：1974-06-24
申请人： MOBIL OIL CORP
摘要： This specification discloses a method of producing petroleum from a petroleum-bearing formation. A heated fluid is generated in a heated fluid generator that is fired with a sulfurcontaining fuel and the heated fluid is injected into the petroleum-bearing formation and petroleum is produced therefrom. The firing of the heated fluid generator with the sulfurcontaining fuel produces a flue gas which contains sulfur oxides. The flue gas is passed through an emission scrubber vessel in counterflow with an alkaline water containing calcium ions to scrub the sulfur oxides from the flue gas, to reduce the alkalinity of the alkaline water and to form calcium sulfite. An oxidation inhibitor is added to inhibit the oxidation of the calcium sulfite. The scrubbed flue gas and the water of the reduced alkalinity are discharged from the emission scrubber vessel and the calcium sulfite is separated by mechanical means from the water of reduced alkalinity.
摘要翻译： 本说明书公开了一种从含石油地层生产石油的方法。 在用含硫燃料燃烧的加热流体发生器中产生加热的流体，并且将加热的流体注入到含石油地层中，并由其生产石油。 用含硫燃料燃烧加热的流体发生器产生含有硫氧化物的烟道气。 烟道气与含有钙离子的碱性水逆流通过排放洗涤器容器以从烟道气中洗涤硫氧化物，以降低碱性水的碱度并形成亚硫酸钙。 加入氧化抑制剂以抑制亚硫酸钙的氧化。 洗涤的烟气和还原碱度的水从排放洗涤器容器中排出，亚硫酸钙通过机械方法从降低的碱度的水中分离出来。
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公开(公告)号：US3911084A
公开(公告)日：1975-10-07
申请号：US33399373
申请日：1973-02-20
申请人： FMC CORP
CPC分类号： B01D53/501
摘要： Sulfur oxides, particularly sulfur dioxide, present in waste gas streams are separated therefrom by contacting the sulfur oxides with a sodium sulfite-sodium bisulfite extraction liquor having a pH of at least 6, regenerating a portion of the sulfur oxidescontaining extraction liquor by adding calcium hydroxide thereto to raise the pH of the liquor to about 8 to 10, removing a calcium sulfite precipitate from the regenerated extraction liquor, and mixing the solids-free regenerated extraction liquor with the sulfur oxides-containing extraction liquor to maintain its pH of at least 6.
摘要翻译： 通过使硫氧化物与pH为至少6的亚硫酸钠 - 亚硫酸氢钠萃取液接触，将废气流中的硫氧化物，特别是二氧化硫与其分离，通过加入一部分含硫氧化物的萃取液再生 将氢氧化钙加入其中以将液体的pH升高至约8至10，从再生提取液中除去亚硫酸钙沉淀物，并将不含固体的再生提取液与含硫氧化物的萃取液混合以将其pH保持在 至少6。
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公开(公告)号：US3825656A
公开(公告)日：1974-07-23
申请号：US20860271
申请日：1971-12-16
申请人： LION FAT OIL CO LTD
发明人： HIRAKAWA M , SUSUKI R , MURAKAMI K , HOSHI H
CPC分类号： C01F11/48
摘要： HEXAGONAL SYSTEM PRISMATIC CALCIUM SULFITE, WHICH IS USEFUL AS A FILLER FOR THERMOPLASTIC RESINS, IN PREPARED BY CONTACTIG AN SO2-CONTAINING GAS WITH A SUSPENSION OF CALCIUM HYDROXIDE, PRECIPITATED CALCIUM CARBONATE, OR MIXTURES THEREOF WHEREIN THE SO2-CONTAINING GAS IS PASSED CONTINUOUSLY THROUGH A PLURALITY OF CONTACT ZONES IN WHICH THE FIRST OF SAID ZONES HAS A TEMPERATURE OF 50*-100*C. AND A PH OF 3-6 AND EACH SUCCEEDING CONTACT ZONE HAS A TEMPERATURE OF 50*-100*C. AND A PH OF HIGHER THAN 6, WHILE SIMULTANEOUSLY PASSING THE SUSPENSION THROUGH SAID PLURALITY OF CONTACT ZONES COUNTER-CURRENTLY TO THE DIRECTION OF THE FLOW OF THE SO2-CONTAINING GAS.
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公开(公告)号：US2453099A
公开(公告)日：1948-11-02
申请号：US50492143
申请日：1943-10-04
申请人： RAFFOLD PROCESS CORP
发明人： RAFTON HAROLD R
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公开(公告)号：US2269608A
公开(公告)日：1942-01-13
申请号：US21764238
申请日：1938-07-05
申请人： PAPER PATENTS CO
发明人： GLENN STRIEBY J
IPC分类号： C01F11/48
CPC分类号： C01F11/48
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