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公开(公告)号：US4827059A
公开(公告)日：1989-05-02
申请号：US216422
申请日：1988-07-08
IPC分类号： C07C17/00 , B01J27/122 , B01J31/30 , C07B61/00 , C07C17/358 , C07C21/09 , C07C67/00 , C07C17/24
CPC分类号： C07C17/358
摘要： Formation of solid and/or high boiling residues during the isomerization of one of 1,4-dichlorobutene-2 and 3,4-dichlorobutene-1 into each other in the presence of a cuprous chloride catalyst is inhibited by the addition to the isomerization reaction of a small amount of a hydroxylamine salt.
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2.发明授权
公开(公告)号：US4215078A
公开(公告)日：1980-07-29
申请号：US26202
申请日：1979-04-02
CPC分类号： C07C17/25
摘要： An improved process for the production of chloroprene, which is the critical monomer constituent of neoprene rubbers, and of 2,3-dichlorobutadiene-1,3, which often is copolymerized with chloroprene to provide better low temperature properties of the resulting elastomer, involves dehydrochlorination of a chlorinated hydrocarbon such as 3,4-dichlorobutene-1, 2,3,4-trichlorobutene-1, or 1,2,3,4-tetrachlorobutane, with an aqueous mixture of sodium hydroxide and sodium chloride having the composition of chlor/alkali cell liquor; separation of the organic phase from which the desired product, chloroprene or 2,3-dichlorobutadiene-1,3, is recovered by distillation; and recirculation of the aqueous (brine) phase to the electrolysis apparatus, from which the sodium hydroxide-sodium chloride liquor is returned to the dehydrochlorination step. This process saves energy in that it does not require cell liquor concentration to isolate pure sodium hydroxide, and it is environmentally desirable because it avoids problems associated with brine disposal.
摘要翻译： 生产氯丁二烯的改进方法是氯丁橡胶的关键单体成分，和经常与氯丁二烯共聚以提供更好的所得弹性体的低温性能的2,3-二氯丁二烯-1,3包括脱氯化氢 的氯代烃如3,4-二氯丁烯-1,2,3,4-三氯丁烯-1或1,2,3,4-四氯丁烷与氢氧化钠和氯化钠的混合物的组成为氯 碱性细胞液 通过蒸馏分离所需产物氯丁二烯或2,3-二氯丁二烯-1,3-的有机相; 和水（盐水）相的再循环到电解装置，氢氧化钠 - 氯化钠液体从该电解装置返回到脱氯化氢步骤。 该方法节省能量，因为它不需要细胞液浓缩来分离纯氢氧化钠，并且由于避免与盐水处理相关的问题，因此是环境上的。
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公开(公告)号：US5077443A
公开(公告)日：1991-12-31
申请号：US631266
申请日：1990-12-20
申请人： Alexander T. Harris
发明人： Alexander T. Harris
IPC分类号： C07C17/02
CPC分类号： C07C17/02
摘要： Liquid phase chlorination in an evaporatively cooled reactor of 1,3-butadiene to 3,4-dichlorobutene-1 and 1,4-dichlorobutene-2 by contacting 1,3-butadiene and elemental chlorine in a solvent at a temperature of 25.degree.-100.degree. C. said solvent being butane or pentane or a fluorinated solvent of the formula (CR.sub.3)(CR'.sub.2).sub.m (CR".sub.2).sub.n R where R is independently hydrogen, fluorine, chlorine or bromine, R' is hydrogen, R" is independently fluorine, chlorine or bromine, m and n are 0-3 with the proviso that terminal carbon atoms are independently perhalogenated or fully hydrogenated, the solvents boil at -15.degree. C. to 40.degree. C. at atmospheric pressure, and the solvent to dichlorobutene ratio is from 2.0:1 to 11:1. The heat of reaction is removed by vaporization of solvent and 1,3-butadiene and returning the ingredients to the reactor.
摘要翻译： 通过使1,3-丁二烯和元素氯在溶剂中在25℃的温度下接触，将1,3-丁二烯的蒸发冷却的反应器中的液相氯化成3,4-二氯丁烯-1和1,4-二氯丁烯-2， 所述溶剂为丁烷或戊烷或式（CR 3）（CR'2）m（CR'2）nR的氟化溶剂，其中R独立地为氢，氟，氯或溴，R'为氢， R“独立地为氟，氯或溴，m和n为0-3，条件是末端碳原子独立地为全卤代或完全氢化，溶剂在大气压下在-15℃至40℃下沸腾， 溶剂与二氯丁烯的比例为2.0:1至11:1。 通过溶剂和1,3-丁二烯的蒸发除去反应热并将成分返回到反应器中。
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公开(公告)号：US4215095A
公开(公告)日：1980-07-29
申请号：US954297
申请日：1978-10-23
CPC分类号： B01D53/72 , B01D53/70 , F23G7/008 , F23J15/00 , F23J2215/30
摘要： Molecular chlorine level in flue gases from incineration of chlorinated organic materials is reduced by injecting into the incinerator's quench zone an amount of a C.sub.1 -C.sub.4 hydrocarbon which depends on the amount of air fed into the combustion zone, the amount of air being such that there is a 1-40 % excess of oxygen. When the wall temperature of the combustion zone is about 800.degree.-1500.degree. C., the temperature at which the hydrocarbon is added to the quench zone is about 450.degree.-1000.degree. C. Hydrogen chloride, which is formed from molecular chlorine and hydrocarbon, is more readily water-scrubbed than chlorine, so that less polluting flue gases are obtained.
摘要翻译： 通过向焚烧炉的淬火区域注入一定量的依赖于进入燃烧区域的空气量的C1-C4烃而减少氯化有机材料焚化烟道气中的分子氯含量，空气的量如此 是氧气的1-40％过量。 当燃烧区的壁温约为800〜1500℃时，加入淬火区的烃的温度约为450℃-1000℃。由分子氯和烃形成的氯化氢 ，比氯更容易进行水洗，从而获得较少污染的烟道气。
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5.发明授权
公开(公告)号：US4221659A
公开(公告)日：1980-09-09
申请号：US24599
申请日：1979-03-28
CPC分类号： C02F1/26 , C02F2101/36
摘要： Chlorinated organic compounds from the aqueous waste streams from a process for manufacturing and isomerizing dichlorobutenes and dehydrochorinating 3,4-dichlorobutene-1 to chloroprene, which is the principal monomer in the manufacture of neoprene rubber, are removed by means of a process, wherein the aqueous waste from the dichlorobutene-isomerization step and brine formed in the dehydrochlorination step are combined to produce an aqueous solution containing about 1-5% sodium chloride and the solution, while maintained at a pH of less than about 6, is extracted with a small amount of a liquid hydrocarbon. The liquid hydrocarbon extract is then incinerated, while the extracted aqueous solution is discharged into a natural body of water. In this way, the level of 1,4-dichlorobutene-2, which is toxic to fish, in the natural body of water can be maintained at a safe level.
摘要翻译： 来自制造和异构化二氯丁烯的方法的废水中的氯化有机化合物和作为氯丁橡胶制造中主要单体的3,4-二氯丁烯-1脱氯化氢氯丁二烯的方法通过以下方法除去，其中 合并二氯丁烯异构化步骤的废水和在脱氯化氢步骤中形成的盐水合并产生含有约1-5％氯化钠的水溶液，同时保持pH小于约6的溶液用小 液体烃的量。 然后将液体烃提取物焚烧，同时将提取的水溶液排放到天然水体中。 以这种方式，在天然水体中对鱼有毒的1,4-二氯丁烯-2的水平可以保持在一个安全的水平。
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