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    PROCESS FOR PURIFICATION OF HYDROFLUORIC ACID INCLUDING OBTAINING ARSENIOUS ACID BY-PRODUCT
    2.
    发明申请
    PROCESS FOR PURIFICATION OF HYDROFLUORIC ACID INCLUDING OBTAINING ARSENIOUS ACID BY-PRODUCT 有权
    用于纯化含氟酸的方法，包括获得的酸性副产物

    公开(公告)号：US20160176711A1

    公开(公告)日：2016-06-23

    申请号：US14640387

    申请日：2015-03-06

    申请人： Mexichem Fluor, Sociedad Anonima de Capital Variable

    发明人： Iris Samantha DURÁN CASTILLO ,  Juan Alberto JUÁREZ GARCÍA ,  Nilo MARTÍNEZ ROBLES

    IPC分类号： C01B7/19 ,  B01D3/00 ,  B01D3/42 ,  C01G28/00

    CPC分类号： C01B7/196 ,  B01D3/007 ,  B01D3/143 ,  C01G28/005 ,  C01G28/007 ,  Y02P20/129

    摘要： The process for purification of hydrofluoric acid as herein disclosed is able to reduce the content of heavy metals, including arsenic, to values lower than 5 ppm without using any chemicals and with an integrated design of hot and cold streams that provide low energy consumption. Likewise, it achieves the extraction of heavy metals, especially arsenic, with minimal waste generation and maintaining its original oxidation state, which for the case of arsenic is +3, so that the residue can be converted into a product with commercial value, that in this process is obtained as arsenious acid.The process consists of four systems: HF purification system, arsenic concentration system, hot water system, and cold water system. This document discloses the synchronized operation of these 4 systems that together achieve what is mentioned in the previous paragraph.

    摘要翻译： 如本文公开的纯化氢氟酸的方法能够将重金属（包括砷）的含量降低至低于5ppm的值，而不使用任何化学品，并且具有提供低能量消耗的热和冷流的集成设计。 同样地，它实现了重金属，特别是砷的提取，废物产生最少，并保持了原来的氧化态，在砷为+3的情况下，可将残渣转化为具有商业价值的产品， 该方法作为亚砷酸获得。 该过程由四个系统组成：HF净化系统，砷浓度系统，热水系统和冷水系统。 本文件公开了这四个系统的同步操作，它们共同实现了前面提到的内容。

    PURIFICATION METHOD OF 2,3,3,3-TETRAFLUOROPROPENE
    5.
    发明申请
    PURIFICATION METHOD OF 2,3,3,3-TETRAFLUOROPROPENE 有权
    2,3,3,3-四氯丙烯的纯化方法

    公开(公告)号：US20130105296A1

    公开(公告)日：2013-05-02

    申请号：US13808358

    申请日：2011-07-21

    申请人： Takehiro Chaki ,  Kazuhiro Takahashi

    发明人： Takehiro Chaki ,  Kazuhiro Takahashi

    IPC分类号： C07C17/386

    CPC分类号： C07C17/386 ,  C01B7/196 ,  C07C17/38 ,  C07C17/383 ,  Y02P20/582 ,  C07C21/18

    摘要： This invention provides a method for purifying HFO-1234yf by removing HF from a mixture of HFO-1234yf and HF under simple and economically advantageous conditions. According to the present invention, this is a purification method for 2,3,3,3-tetrafluoropropene, (1) the purification method comprising the step of subjecting a mixture comprising 2,3,3,3-tetrafluoropropene and hydrogen fluoride to extractive distillation in a distillation column A using an extractant, thereby obtaining a fraction I that contains 2,3,3,3-tetrafluoropropene and has a lower ratio of hydrogen fluoride to 2,3,3,3-tetrafluoropropene than that of the mixture, while obtaining a fraction II that contains hydrogen fluoride and has a lower ratio of 2,3,3,3-tetrafluoropropene to hydrogen fluoride than that of the mixture; (2) the extractant comprising at least one member selected from the group consisting of: (i) alcohols represented by ROH, wherein R is a C1-5 alkyl group, (ii) ethers represented by ROR′, wherein R and R′ are the same or different, and each is a C1-4 alkyl group, (iii) fluorinated alcohols represented by RfOH, wherein Rf is a C1-3 fluoroalkyl group, (iv) ketones represented by RCOR′, wherein R and R′ are the same or different, and each is a C1-4 alkyl group, (v) esters represented by RCOOR′, wherein R and R′ are the same or different, and each is a C1-4 alkyl group, (vi) polyols represented by R(OH)n, wherein R is a C1-4 alkyl group, and n is an integer of 2 to 3, and (vii) ethylene glycols represented by R1O(CH2CH2O)nR2, wherein R1 and R2 are the same or different, and each is hydrogen or a C1-4 alkyl group, and n is an integer of 1 to 3.

    摘要翻译： 本发明提供了一种通过在简单且经济有利的条件下从HFO-1234yf和HF的混合物中除去HF来净化HFO-1234yf的方法。 根据本发明，这是2,3,3,3-四氟丙烯的纯化方法，（1）纯化方法，其包括将包含2,3,3,3-四氟丙烯和氟化氢的混合物进行萃取 在使用萃取剂的蒸馏塔A中进行蒸馏，从而获得含有2,3,3,3-四氟丙烯的馏分I，并且氟化氢与2,3,3,3-四氟丙烯的比例低于混合物， 同时获得含有氟化氢并且比2,3混合物具有较低的2,3,3,3-四氟丙烯与氟化氢的比例II; （2）萃取剂，其包含选自以下的至少一种：（i）由ROH表示的醇，其中R为C 1-5烷基，（ii）由ROR'表示的醚，其中R和R'为 相同或不同，各自为C1-4烷基，（iii）由RfOH表示的氟化醇，其中Rf为C1-3氟代烷基，（iv）由RCOR'表示的酮，其中R和R'为 相同或不同，并且各自为C 1-4烷基，（v）由RCOOR'表示的酯，其中R和R'相同或不同，并且各自为C 1-4烷基，（vi）由 R（OH）n，其中R是C 1-4烷基，n是2至3的整数，和（vii）由R 10（CH 2 CH 2 O）n R 2表示的乙二醇，其中R 1和R 2相同或不同， 各自为氢或C 1-4烷基，n为1〜3的整数。

    Noncatalytic manufacture of 1,1,3,3,3-pentafluoropropene from 1,1,1,3,3,3-hexafluoropropane
    8.
    发明申请
    Noncatalytic manufacture of 1,1,3,3,3-pentafluoropropene from 1,1,1,3,3,3-hexafluoropropane 审中-公开
    从1,1,1,3,3,3-六氟丙烷非催化制备1,1,3,3,3-五氟丙烯

    公开(公告)号：US20060094911A1

    公开(公告)日：2006-05-04

    申请号：US11259901

    申请日：2005-10-27

    申请人： Velliyur Rao ,  Allen Sievert ,  Ralph Miller

    发明人： Velliyur Rao ,  Allen Sievert ,  Ralph Miller

    IPC分类号： C07C17/25

    CPC分类号： C01B7/196 ,  C07C17/25 ,  C07C17/38 ,  C07C21/18 ,  Y02P20/582

    摘要： 1,1,3,3,3-Pentafluoropropene (CF3CH═CF2, HFC-1225zc) can be produced by pyrolyzing 1,1,1,3,3,3-hexafluoropropane (CF3CH2CF3, HFC-236fa) in the absence of dehydrofluorination catalyst at temperatures of from about 700° C. to about 1000° C. and total pressures of about atmosphere pressure in an empty, tubular reactor, the interior surfaces of which comprise materials of construction resistant to hydrogen fluoride.

    摘要翻译： 1,1,3,3,3-五氟丙烯（CF 3 CH-CF 2 H 2，HFC-1225zc）可以通过将1,1,1,3， 在不存在脱氟化氢催化剂的情况下，在约700℃的温度下，将3,3-六氟丙烷（CF 3 CH 2 CH 3 CF 3，HFC-236fa） 在空的管式反应器中的约+约1000℃和约大气压的总压力，其内表面包括耐氟化氢的结构材料。

    Process for the reduction or elimination of NH3/HF byproduct in the manufacture of nitrogen trifluoride
    10.
    发明申请
    Process for the reduction or elimination of NH3/HF byproduct in the manufacture of nitrogen trifluoride 失效
    在制造三氟化氮中还原或除去NH 3 / HF副产物的方法

    公开(公告)号：US20030180211A1

    公开(公告)日：2003-09-25

    申请号：US10102488

    申请日：2002-03-20

    发明人： Athanasios Tsirukis ,  John Theodore Lileck ,  Howard Paul Withers JR. ,  Kenneth E. Fegley

    IPC分类号： C01B021/083

    CPC分类号： C01B21/0832 ,  C01B7/196

    摘要： A process for reducing or eliminating NH3/HF/MFz liquid waste melt in the manufacture of NF3 is provided which includes the steps of providing an NF3 reactor for a reaction of F2 with a liquid NH3/HF/MFz mixture that produces NF3, HF, N2 and other nitrogen fluorides as gaseous products and a liquid NH3/HF/MFz mixture as the liquid waste melt. The process further provides for reduction or elimination of the liquid NH3/HF/MFz waste melt produced by the reactor.

    摘要翻译： 提供了一种在制造NF3中减少或消除NH 3 / HF / MFz液体废液的方法，该方法包括以下步骤：提供NF3反应器以使F2与产生NF 3，HF的液体NH 3 / HF / MFz混合物反应， N2和其它氮化氟作为气态产物，液态NH3 / HF / MFz混合物作为液体废液。 该方法进一步提供减少或消除由反应器产生的液体NH 3 / HF / MF z废液。