公开(公告)号：WO1997031859A1

公开(公告)日：1997-09-04

申请号：PCT/EP1997000830

申请日：1997-02-21

Applicant: KRUPP UHDE GMBH ,  OLINGER, Rainer ,  BAUMGARTNER, Werner ,  BRANDL, Adrian ,  ISFORT, Heinz

Inventor： KRUPP UHDE GMBH

IPC: C01B07/07

CPC classification number: B01D53/68 ,  B01D53/70 ,  B01D53/73 ,  B01D2257/2045 ,  B01D2257/2064 ,  C01B7/07 ,  C01B7/0737 ,  C07C17/38 ,  C25B1/46 ,  Y02P20/154

Abstract: The invention concerns a process for preparing the useful product chlorine (Cl2) (34) with particularly low investment costs, in particular using reduced amounts of energy, from unpurified waste hydrochloric acid (13) containing hydrogen chloride (HCl). To that end, the invention comprises three steps: 1. producing an HCl-containing flue gas (4) by the chemical-thermal breakdown (13) (combustion, partial oxidation, metal-catalytic decomposition or the like) of chloric waste; 2. producing a crude hydrochloric acid (13) by washing (10) the HCl-containing flue gases; and 3. admixing the crude hydrochloric acid (28) to salt water (30) and decomposing the acidified salt water in an alkali electrolysis process (38, 39) to form chlorine (34), hydrogen (35) and sodium hydroxide (37).

Abstract translation: 本发明涉及含有该出污染的氯化氢的方法（HCl）Abfallsalzäure（13）的所需产物的氯（C12）（34）是具有特别低的投资成本及以上的所有制备与使用少量的能量 ， 为此，本发明提供了三个步骤：1）产生一个由化学 - 热消化的烟道气（4）含有HC1-（13）（燃烧，部分氧化的含氯废料，金属催化分解或类似的）的; 2）通过将含HC1-烟道气（10）洗涤生产的粗酸（13）的; 3）将粗的盐酸（28）（用于盐水30）和酸化的盐水中分离的碱电解（38，39），以氯（34），氢气（35）和氢氧化钠（37）。

公开(公告)号：WO1994016988A1

公开(公告)日：1994-08-04

申请号：PCT/US1993000455

申请日：1993-01-28

Applicant: E.I. DU PONT DE NEMOURS AND COMPANY ,  CORBIN, David, R. ,  MAHLER, Barry, Asher

Inventor： E.I. DU PONT DE NEMOURS AND COMPANY

IPC: C01B07/07

CPC classification number: C01B7/0718 ,  C01B7/0725

Abstract: A process is disclosed for purifying an impure HCl containing at least one saturated or olefinic impurity of the formula CaHbClcFd (wherein a is an integer from 1 to 4, b and c are each integers from 0 to 9, and d is an integer from 1 to 10; provided b + c + d = 2a + 2 for acyclic compounds and b + c + d = 2a for cyclic compounds and olefinic compounds) which comprises the step of contacting the impure HCl with a sorbent for said impurities selected from activated carbons and inorganic molecular sieves (e.g., silicalites and zeolites) at a temperature and a pressure suitable for sorption for a period of time sufficient to remove a substantial amount of said impurities.

Abstract translation: 公开了一种纯化含有至少一种式CaHbClcFd的饱和或烯烃杂质的不纯的HCl的方法（其中a为1至4的整数，b和c各自为0至9的整数，d为1的整数 至10;对于环状化合物和烯烃化合物，b + c + d = 2a + 2和b + c + d = 2a），其包括使不纯的HCl与选自活性炭的所述杂质的吸附剂接触的步骤 和无机分子筛（例如，硅沸石和沸石）在适于吸附的温度和压力下足以除去大量所述杂质的时间。

公开(公告)号：WO1996015981A1

公开(公告)日：1996-05-30

申请号：PCT/US1995013780

申请日：1995-10-25

Applicant: THE DOW CHEMICAL COMPANY

Inventor： THE DOW CHEMICAL COMPANY ,  PIVIDAL, Katherine, A. ,  TSAI, Tom, C.

IPC: C01B07/07

CPC classification number: C01B7/0712 ,  C07C17/38

Abstract: A process is provided for the recovery of hydrogen chloride in anhydrous form (44) from a dry mixture of hydrogen chloride with one or more non-condensable gases and which may also contain components heavier than hydrogen chloride (26), which process comprises distilling (34) the mixture to produce an overheads stream (36) containing the non-condensable gases and 95 percent or more by weight of the hydrogen chloride in the mixture and a bottoms stream (38) containing 95 percent or greater by weight of all components heavier than hydrogen chloride, and compressing (40) and refrigerating (42) the overheads stream whereby a selected proportion of the hydrogen chloride in the overheads stream is produced in a liquid anhydrous form containing 50 parts per million or less by weight of water.

Abstract translation: 提供了一种从氯化氢与一种或多种不可冷凝气体的干燥混合物中回收无水形式（44）的氯化氢并且还可含有比氯化氢（26）重的组分的方法，该方法包括蒸馏 34）混合物以产生含有不可冷凝气体的塔顶馏出物流（36）和混合物中95重量％或更多的氯化氢，和含有95重量％或更多重量的所有组分的塔底物流（38） 并且压缩（40）并冷冻（42）塔顶馏出物流，由此塔顶馏出物流中的选定比例的氯化氢以包含50重量份或更少的水的液体无水形式产生。

公开(公告)号：WO1996000187A1

公开(公告)日：1996-01-04

申请号：PCT/EP1995002058

申请日：1995-05-30

Applicant: SOLVAY S.A. ,  VAN DIEST, Jacques ,  FILIPPONE, Mauro

Inventor： SOLVAY S.A.

IPC: C01B07/07

CPC classification number: C01B7/0743

Abstract: Nitrogen trichloride is removed from raw chlorine by contacting it with activated carbon.

Abstract translation: 通过与活性炭接触将三氯化氮从生氯中除去。

公开(公告)号：WO1995033680A1

公开(公告)日：1995-12-14

申请号：PCT/NO1995000085

申请日：1995-05-31

Applicant: NORSK HYDRO A.S ,  WOLD, Ragnar

Inventor： NORSK HYDRO A.S

IPC: C01B07/07

CPC classification number: C01B7/0706

Abstract: Method for the removal of colouring materials as iron and halogens from hydrochloric acid. Among the halogens it is especially chlorine and bromine that contribute to the colour. Iron is first removed from the hydrochloric acid preferably by filtration and ion exchange and thereafter a nitrogen containing reducing agent is added to the acid. It is preferred to use compounds containing hydroxyl amine, preferably hydroxylamine hydrochloride (hydroxyl ammoniumchloride). The reducing agent is added in a stoichiometric excess.

Abstract translation: 从盐酸中去除铁和卤素的着色材料的方法。 在卤素中，特别是有助于颜色的氯和溴。 首先通过过滤和离子交换从铁酸中除去铁，然后向该酸中加入含氮还原剂。 优选使用含有羟胺，优选盐酸羟胺（羟基氯化铵）的化合物。 以化学计量过量加入还原剂。

公开(公告)号：WO1995000438A1

公开(公告)日：1995-01-05

申请号：PCT/US1994001927

申请日：1994-02-14

Applicant: OCCIDENTAL CHEMICAL CORPORATION ,  ROWE, Edward, A.

Inventor： OCCIDENTAL CHEMICAL CORPORATION ,  ROWE, Edward, A.

IPC: C01B07/07

CPC classification number: B01D53/1493 ,  C01B7/0743

Abstract: Disclosed is a method of removing chlorine from a mixture of gases. The mixture of gases is contacted with a liquid which contains a compound having general formula (I) where n is 1 to 3, whereby chlorine in the mixture of gases is absorbed by the liquid. The liquid is then heated to volatilize the chlorine and separate it from the liquid.

Abstract translation: 公开了从气体混合物中除去氯的方法。 气体的混合物与含有通式（I）的化合物（其中n为1至3）的液体接触，由此气体混合物中的氯被液体吸收。 然后将液体加热以使氯气挥发并将其与液体分离。

公开(公告)号：WO1997011027A1

公开(公告)日：1997-03-27

申请号：PCT/CH1996000309

申请日：1996-09-10

Applicant: CT UMWELTTECHNIK AG ,  AINSCOW, Stuart ,  WEILENMANN, Max ,  SITTKUS, Rudolf

Inventor： CT UMWELTTECHNIK AG

IPC: C01B07/07

CPC classification number: A62D3/33 ,  A62D2101/49 ,  A62D2203/10 ,  C01B7/0712 ,  C01B7/0731

Abstract: The invention concerns a method of processing fluorine-contaminated hydrochloric acid arising from waste treatment, the method calling for the acid to be concentrated by the removal of water in a circuit round which it is entrained by an aqueous solution of water-binding and fluorine-binding agents. Contained in the entrainer solution is a precipitating agent which binds both fluoride and silicon as solids which are precipitated out in the form of a sludge.

Abstract translation: 与用于处理污染的氟废盐酸或原酸进行脱水整流并使用在其中循环水和氟化物结合物质的水溶液的引气剂回路中的方法。 在夹带剂，包含在分离剂，通过既含氟和硅作为在淘析固体的约束。

公开(公告)号：WO1995017344A1

公开(公告)日：1995-06-29

申请号：PCT/EP1994004244

申请日：1994-12-21

Applicant: SCHERING AKTIENGESELLSCHAFT ,  VEBA KRAFTWERKE RUHR AG ,  TILLMETZ, Klaus ,  HEINBUCH, Uwe ,  BENNEMANN, Helmut ,  KEMPERDIEK, Egbert ,  BRAUCKMANN, Olaf ,  SCHALLERT, Bernd ,  ALBRECHT, Wolfgang

Inventor： SCHERING AKTIENGESELLSCHAFT ,  VEBA KRAFTWERKE RUHR AG

IPC: C01B07/07

CPC classification number: B01D53/68 ,  B01D53/1456 ,  C01B7/0712

Abstract: A process is disclosed for extracting hydrochloric acid from bromine- and iodine-containing smoke gas. Halogenated waste is burned, the halogenated smoke gas is absorbed in water, and if required evaporated, the thus obtained acid aqueous solution is mixed with a reducing agent or with a mixture of several reducing agents and evaporated or rectified, and the thus obtained vapour phase is recondensed.

Abstract translation: 它是用于从含溴和含碘的烟道气中描述的盐酸提取，其特征在于，废物焚烧含卤素的吸收在水中的含卤素的废气的处理，可能蒸发，将酸性水溶液从而得到具有还原剂或几个还原剂的混合物处理而蒸发或整流 所得的气相中冷凝。

公开(公告)号：WO1993010038A1

公开(公告)日：1993-05-27

申请号：PCT/AU1992000625

申请日：1992-11-23

Applicant: TECHNOLOGICAL RESOURCES PTY LIMITED ,  HOLLITT, Michael, John ,  McLelland, Ross, Alexander

Inventor： TECHNOLOGICAL RESOURCES PTY LIMITED

IPC: C01B07/07

CPC classification number: C23G1/36 ,  C01B7/035 ,  C01B7/0737 ,  C01B13/34 ,  C01G23/0536 ,  C01G49/04 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/52 ,  C22B1/02 ,  C22B3/02 ,  Y02P10/216 ,  Y02P10/234

Abstract: The specification discloses a process for regenerating aqueous chloride leach liquors. The process involves roasting aqueous chloride leach liquor to produce metal oxide and a gas containing HC1. The gas containing HC1 is passed through a preconcentrator where it is contacted with spent aqueous chloride leach liquor. The enthalpy of the gas evaporates water from the spent liquor thereby concentrating it. At the same time the spent liquor absorbs HC1. HC1 not absorbed in the preconcentrator is contacted with water to form hydrochloric acid. The hydrochloric acid may be mixed with the concentrated spent liquor and re-used. Apparatus for operating the process is also disclosed.

Abstract translation: 该说明书公开了一种用于再生含氯化物浸出液的方法。 该方法包括焙烧氯化钠浸出液以产生金属氧化物和含HC1的气体。 含有HC1的气体通过预浓缩器，在其中与废氯化钠浸出液接触。 气体的焓从废液中蒸发水，从而将其浓缩。 同时废液吸收HC1。 预浓缩器中未吸收的HC1与水接触形成盐酸。 盐酸可与浓缩的废液混合并重新使用。 还公开了用于操作该过程的装置。

公开(公告)号：WO1997014647A1

公开(公告)日：1997-04-24

申请号：PCT/CH1996000343

申请日：1996-10-02

Applicant: CT UMWELTTECHNIK AG ,  SOWIEJA, Dietmar ,  LANG, Walter ,  SCHAUB, Martin

Inventor： CT UMWELTTECHNIK AG

IPC: C01B07/07

CPC classification number: C01F7/50 ,  B01D53/68 ,  C01B7/0706 ,  C01B7/0712 ,  C01F7/54

Abstract: The process is used to obtain hydrochloric acid from flue gases. Hydrogen chloride HC1, hydrogen fluoride HF and other substances soluble in an aqueous washing solution are removed thereby. The dissolved fluoride ions are converted with added aluminium and sodium ions into cryolite Na3A1F6 and aluminium fluoride A1F3. A fraction of larger crystals (52) is removed from the washing solution taken to a circuit (12, P1, 32, P3, 5) and a fraction of finer crystals left in the washing solution. HC1 is expelled from the washing solution. A vapour (34) containing the expelled HC1 is taken to further processing stages (8) for producing highly concentrated hydrochloric acid (88).

Abstract translation: 该方法使用盐酸的从烟道气中回收。 从氯化氢HCl，氟化氢HF，以及其它可溶性物质的烟道气的洗涤水溶液在洗涤溶液中被去除。 溶解的氟离子与所提供的铝和钠离子一起反应以冰晶石和氟化铝Na3A1F6 AlF 3。 更大的晶体（52）的一小部分被从在电路（12，P1，32，P3，5）被引导的洗涤溶液和残留在洗涤溶液中更精细的晶体（51）的一小部分除去。 它是从洗涤液HC1开除。 将含有排出HC1蒸汽（34）被供给到进一步的处理步骤（8），用于高度浓缩的盐酸（88）的制备。