Production of aliphatic esters
    1.
    发明授权
    Production of aliphatic esters 失效
    生产脂肪族酯

    公开(公告)号:US06399812B1

    公开(公告)日:2002-06-04

    申请号:US09559339

    申请日:2000-04-27

    CPC classification number: C07C67/40 C07C69/24 C07C69/14

    Abstract: Aliphatic esters, R'COOR are produced by reacting the corresponding alcohol, ROH having carbon numbers of the alkyl groups, R′ and R, between 0 and 9 and 1 and 10, respectively, with molecular oxygen in the presence of a dual functional catalyst comprising metal on acidic solid support. In particular, the process is used advantageously for production of ethyl acetate by conversion of ethanol. The reaction mixture from the reactor is separated through azeotropic distillation to recover the ethyl acetate as product and the by-product, acetaldehyde and acetic acid which could be recycled for further reaction. The process is characterized by high conversion of ethanol, high selectivity and high yield for ethyl acetate and low waste stream generation. The preferred catalyst is Pd on zeolites which is active, selective, stable and regenerable.

    Abstract translation: 脂肪族酯R'COOR是通过在双官能催化剂存在下使相应的醇R 1和R 10分别与0分别为0和9分子之间的烷基,R 1和R 2分别与分子氧反应的醇ROH 在酸性固体载体上包含金属。 特别地,该方法有利地用于通过乙醇转化生产乙酸乙酯。 通过共沸蒸馏分离来自反应器的反应混合物以回收作为产物的乙酸乙酯和可再循环用于进一步反应的副产物乙醛和乙酸。 该方法的特点是乙醇转化率高,乙酸乙酯选择性高,产率高,废液产生量低。 优选的催化剂是Pd活性,选择性,稳定和可再生的沸石。

    Method for Producing Improved Rubberized Concrete using Waste Rubber Tires
    3.
    发明申请
    Method for Producing Improved Rubberized Concrete using Waste Rubber Tires 有权
    使用废橡胶轮胎生产改进橡胶混凝土的方法

    公开(公告)号:US20120252910A1

    公开(公告)日:2012-10-04

    申请号:US13078913

    申请日:2011-04-01

    Abstract: Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber and a gas condensate which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The gas condensate co-produced in the partial oxidation reactor consists of mainly active sulfur oxides (R—SOx—R) and serves as an excellent bonding agent to further enhance the bonding strength between the partially oxidized rubber particles and the cement mixes. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.

    Abstract translation: 来自环境危险废轮胎的碎屑橡胶的部分氧化产生表面处理的碎屑橡胶和气体冷凝物,其与常规橡胶混凝土相比用作制造具有显着改善的机械强度的橡胶混凝土的共混料。 化学更活泼的橡胶表面变得亲水,所以它与周围水泥基质的亲水表面相互作用要强得多。 在部分氧化反应器中共同生成的气体冷凝物由主要的活性硫氧化物(R-SOx-R)组成,并且用作优异的粘合剂,以进一步提高部分氧化的橡胶颗粒和水泥混合物之间的粘合强度。 机械改进的橡胶混凝土比常规橡胶混凝土更通用。

    Process for ethyl acetate production
    4.
    发明授权
    Process for ethyl acetate production 失效
    乙酸乙酯生产工艺

    公开(公告)号:US5770761A

    公开(公告)日:1998-06-23

    申请号:US744880

    申请日:1996-11-08

    CPC classification number: C07C67/40

    Abstract: Oxidation of liquid ethanol in the presence of excess liquid ethanol and a supported oxidation catalyst provides a one step process for production of ethyl acetate. The acetic acid produced in the oxidation is absorbed by the excess liquid ethanol, which esterifies to ethyl acetate. Ethyl acetate and water are removed from the process for separation of the ethyl acetate. The oxidation portion of process is preferred with a metallic oxidation catalyst on a hydrophobic support. The esterification portion of the process is preferred with an acidic solid ion exchange resin to promote the esterification. The process can be performed in series in separate steps, or preferably, in parallel in a single vessel, preferably a trickle bed reactor.

    Abstract translation: 在过量的液态乙醇和负载的氧化催化剂的存在下,液态乙醇的氧化提供了生产乙酸乙酯的一步法。 在氧化中产生的乙酸被过量的液体乙醇吸收,其中酯化成乙酸乙酯。 从分离乙酸乙酯的方法中除去乙酸乙酯和水。 方法的氧化部分优选与疏水性载体上的金属氧化催化剂。 该方法的酯化部分优选与酸性固体离子交换树脂以促进酯化。 该方法可以在单独的步骤中串联进行,或者优选在单个容器,优选滴液床反应器中并行进行。

    Homogeneous catalysts for biodiesel production
    5.
    发明授权
    Homogeneous catalysts for biodiesel production 失效
    用于生物柴油生产的均相催化剂

    公开(公告)号:US08624073B1

    公开(公告)日:2014-01-07

    申请号:US13759644

    申请日:2013-02-05

    CPC classification number: C11C3/10 C07C67/03 Y02E50/13 C07C69/52

    Abstract: Non-basic and non-acidic homogeneous catalysts organo-metallic compound of the formula: M(OCH3)x wherein M is B, Na, Mg, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Al, Sn, Sb, Mo, Ag, and Cd and x is an integer from 2, 3 or 4 can catalyze transesterification of oils and fats having high free fatty acid content and with an acid number from 0.5 to 20, into biodiesel. B(OCH3)3 and Ge(OCH3)4, having low boiling points, are easily recovered from the biodiesel and glycerol phases and recycled for reuse. Continuous biodiesel production with the novel homogenous catalysts is achieved without the complicated and troublesome steps attendant with conventional processes using base or acid homogeneous catalyst. The high purity biodiesel is produced without acid-base neutralization, water wash, filtration, and solid disposal steps for removing the spent catalyst from the product streams associated with prior techniques.

    Abstract translation: 非碱性和非酸性均相催化剂下式的有机金属化合物:M(OCH 3)x其中M为B,Na,Mg,K,Ca,Sc,Ti,V,Cr,Mn,Fe,Co,Ni ,Cu,Zn,Ga,Ge,Al,Sn,Sb,Mo,Ag和Cd,x是2,3或4的整数,可以催化具有高游离脂肪酸含量和酸值的油和脂肪的酯交换反应 从0.5到20,进入生物柴油。 具有低沸点的B(OCH 3)3和Ge(OCH 3)4)容易从生物柴油和甘油相回收并再循环再利用。 使用新型均相催化剂进行连续生物柴油生产,而不需要使用碱或酸均相催化剂的常规方法所需的复杂和麻烦的步骤。 高纯度生物柴油在没有酸碱中和,水洗,过滤和固体处理步骤的情况下生产,用于从与先前技术相关的产品流中除去废催化剂。

    Method for producing improved rubberized concrete using waste rubber tires
    6.
    发明授权
    Method for producing improved rubberized concrete using waste rubber tires 有权
    使用废橡胶轮胎生产改进的橡胶混凝土的方法

    公开(公告)号:US08338506B2

    公开(公告)日:2012-12-25

    申请号:US13078913

    申请日:2011-04-01

    Abstract: Partial oxidation of crumb rubber derived from environmental hazardous waste tires yields surface treated crumb rubber and a gas condensate which are used as blending stocks for making rubberized concrete with substantially improved mechanical strength as compared to the conventional rubberized concrete. The chemically more active rubber surface becomes hydrophilic, so it interacts with the hydrophilic surface of surrounding cement matrix much stronger. The gas condensate co-produced in the partial oxidation reactor consists of mainly active sulfur oxides (R—SOx—R) and serves as an excellent bonding agent to further enhance the bonding strength between the partially oxidized rubber particles and the cement mixes. The mechanically improved rubberized concrete is more versatile than conventional rubberized concrete.

    Abstract translation: 来自环境危险废轮胎的碎屑橡胶的部分氧化产生表面处理的碎屑橡胶和气体冷凝物,其与常规橡胶混凝土相比用作制造具有显着改善的机械强度的橡胶混凝土的共混料。 化学更活泼的橡胶表面变得亲水,所以它与周围水泥基质的亲水表面相互作用要强得多。 在部分氧化反应器中共同生成的气体冷凝物由主要的活性硫氧化物(R-SOx-R)组成,并且用作优异的粘合剂,以进一步提高部分氧化的橡胶颗粒和水泥混合物之间的粘合强度。 机械改进的橡胶混凝土比常规橡胶混凝土更通用。

    Process for removing volatile organic compounds
    7.
    发明授权
    Process for removing volatile organic compounds 失效
    去除挥发性有机化合物的方法

    公开(公告)号:US07060236B2

    公开(公告)日:2006-06-13

    申请号:US10274551

    申请日:2002-10-21

    Abstract: A continuous and regenerative process for removal and destruction of VOC from effluents is disclosed. The process employs two fixed bed reactors in series filled with adsorbent/catalyst. The VOC containing effluent is passed over the first reactor for adsorbing VOC, while the second reactor, which is loaded with VOC from the previous cycle is regenerated with part of the treated gas made up with an appropriate amount of air. Just before the VOC breakthrough occurs at the first reactor, the roles of the two reactors are switched. The process is characterized by simple design, high VOC removal efficiency, no external heat requirement and low operation cost.

    Abstract translation: 公开了用于从流出物中除去和破坏VOC的连续且再生的方法。 该方法采用两个串联填充吸附剂/催化剂的固定床反应器。 含有VOC的流出物通过第一反应器用于吸附VOC,而第二个反应器,其中装有来自前一循环的VOC的第二反应器用一定量的空气组成的处理气体再生。 在第一反应堆发生VOC突破前,两台反应堆的作用就被切换了。 该工艺的特点是设计简单,挥发性有机物除去效率高,无需外界热量需求,运行成本低。

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