公开(公告)号：US5795486A

公开(公告)日：1998-08-18

申请号：US579190

申请日：1995-12-27

Applicant: Jean-Yves Chane-Ching ,  Fabrice Fourcot

Inventor： Jean-Yves Chane-Ching ,  Fabrice Fourcot

IPC: C02F1/52 ,  C02F1/62

CPC classification number: C02F1/5236 ,  Y10S210/912 ,  Y10S210/913 ,  Y10S210/914

Abstract: The invention relates to the use of barium sulphide or strontium sulphide for the removal of heavy metals in industrial acidic solutions. The invention is applicable to the purification of contaminated acids, in particular of spent battery acid, or of industrial solutions of titanyl sulphate.

Abstract translation: 本发明涉及硫酸钡或硫化锶在工业酸性溶液中去除重金属的用途。 本发明适用于污染的酸，特别是废电池酸或硫酸氧钛的工业溶液的净化。

公开(公告)号：US06180074B2

公开(公告)日：2001-01-30

申请号：US09068029

申请日：1998-08-14

Applicant: Fabrice Fourcot ,  Jean-Claude Pouxviel

Inventor： Fabrice Fourcot ,  Jean-Claude Pouxviel

IPC: B01D5334

CPC classification number: B01D53/508 ,  B01D53/68 ,  C01D5/00

Abstract: A method for removing contaminants, such as sulfur dioxide, mercury and hydrochloric acid, out of flue gases is provided, said method including the steps of: treating the flue gases with a reagent, such as sodium carbonate, sodium bicarbonate and ammonium salts or mixtures thereof; selectively dissolving the sodium phosphates produced thereby in water; separating out the solids remaining in suspension in the solution; and crystallizing the purified sodium sulphate present in the above-mentioned solution. The sodium sulfate can be upgraded in glass working furnaces. The reagent can be obtained by heating an intermediate solution containing sodium bicarbonate; sodium carbonate; ammonium bicarbonate and ammonium carbonate, which was obtained from the Solvay process for manufacturing sodium carbonate.

Abstract translation: 提供了从烟道气中除去二氧化硫，汞和盐酸等污染物的方法，所述方法包括以下步骤：用试剂如碳酸钠，碳酸氢钠和铵盐或混合物处理烟道气 的; 选择性地将由此产生的磷酸钠溶解在水中; 将悬浮液中残留的固体分离出溶液; 并使存在于上述溶液中的纯化的硫酸钠结晶。 硫酸钠可在玻璃加工炉中升级。 试剂可以通过加热含有碳酸氢钠的中间溶液获得; 碳酸钠; 碳酸氢铵和碳酸铵，其由用于制造碳酸钠的Solvay方法获得。

公开(公告)号：US06290872B1

公开(公告)日：2001-09-18

申请号：US09068034

申请日：1998-09-10

Applicant: Fabrice Fourcot ,  Jean-Claude Pouxviel ,  Christophe Zing

Inventor： Fabrice Fourcot ,  Jean-Claude Pouxviel ,  Christophe Zing

IPC: C09K300

CPC classification number: C01D7/00 ,  B01D53/502 ,  B01D53/507 ,  B01D53/508 ,  B01D53/64 ,  B01D53/685 ,  B01D2251/206 ,  B01D2251/304 ,  B01D2251/606 ,  C01D7/18

Abstract: A composition having sodium bicarbonate, sodium carbonate, and ammonia in the form of ammonium salts is formed by heat treating ammoniacal bicarbonate at a temperature between 20 and 150° C. A method of using the composition includes reacting the composition with a flue gas containing HX acids, where X represents halogens, compounds of the SOx type, or mixtures thereof, or the flue gases may contain NOx compounds.

Abstract translation: 通过在20至150℃的温度下对氨碳酸氢盐进行热处理，形成铵盐形式的碳酸氢钠，碳酸钠和氨的组合物。使用该组合物的方法包括使该组合物与含有HX的烟道气反应 酸，其中X表示卤素，SOx类型的化合物或其混合物，或烟道气体可含有NOx化合物。

公开(公告)号：US06296816B1

公开(公告)日：2001-10-02

申请号：US09101084

申请日：1999-01-05

Applicant: Frederic Cordelet ,  Fabrice Fourcot

Inventor： Frederic Cordelet ,  Fabrice Fourcot

IPC: C01G2300

CPC classification number: C01G23/0532 ,  C01G23/001

Abstract: The invention concerns a treatment process with a starting aqueous phase (SAP) containing titanium and sulfuric acid produced by the attack of sulfuric acid on titaniferous ores of the type in which the following steps are used: an extraction step in which the starting aqueous phase is placed in contact with an organic extraction phase (OEP) containing one or a plurality of organophosphorus compounds, by means of which an organic phase containing titanium and sulfuric acid (OP) is obtained; then, a regeneration step in which the organic phase containing titanium and sulfuric acid (OP) is regenerated by contact with an aqueous regeneration phase (ARP0), by means of which a regenerated aqueous phase (RAPf) containing titanium is obtained; characterized in that it includes in additional step in which all or part of the regenerated aqueous phase (RAPf) is placed in contact with an organic washing phase (OWP), by means of which a treated aqueous phase (TAP) containing titanium is obtained.

Abstract translation: 本发明涉及一种含有起始水相（SAP）的处理方法，所述起始水相（SAP）含有通过硫酸侵蚀产生的钛和硫酸，其中使用以下步骤的类型的含钛矿石：其中起始水相为 与含有一种或多种有机磷化合物的有机萃取相（OEP）接触，通过该有机磷化合物获得含有钛和硫酸（OP）的有机相;然后，再生步骤，其中将含钛的有机相 通过与含水再生相（ARP0）的接触再生硫酸（OP），通过该再生相获得含有钛的再生水相（RAPf）;其特征在于，其包括另外的步骤，其中全部或部分 再生水相（RAPf）与有机洗涤相（OWP）接触，通过该洗涤相获得含钛的处理水相（TAP）。