Cost-effective catalyst for gasification of powder river basin coal
    1.
    发明授权
    Cost-effective catalyst for gasification of powder river basin coal 有权
    粉尘流域煤气化成本效益好的催化剂

    公开(公告)号:US08926931B2

    公开(公告)日:2015-01-06

    申请号:US13566492

    申请日:2012-08-03

    IPC分类号: C01B31/18 C09K3/00 C10J3/00

    摘要: The present invention generally relates to a catalytic gasification of coal. Catalytic gasification of a Wyodak low-sulfur sub-bituminous coal from the Powder River Basin of Wyoming was investigated using an inexpensive sodium carbonate catalyst applied via incipient wetness impregnation. Experiments in an atmospheric pressure fixed-bed laboratory gasifier were performed to evaluate the effects of reaction temperature, feed gas steam content, and Na2CO3 loading on the catalytic gasification of the Wyodak coal. The temperature range investigated (700-900° C.) was selected with consideration of the Na2CO3 melting point (850° C.) to reduce the loss by volatilization of sodium. Sodium was found to be active during both pyrolysis and gasification steps. The catalyst was most cost-effective at addition levels of approximately 3 wt %. The random pore model provided a good fit to the conversion versus time data collected under both the catalytic and the uncatalytic conditions.

    摘要翻译: 本发明一般涉及煤的催化气化。 使用廉价的碳酸钠催化剂,通过初始湿度浸渍法研究了怀俄明州粉河流域Wyodak低硫次烟煤的催化气化。 进行大气压固定床实验室气化炉的实验,以评估反应温度,进料气体蒸汽含量和Na2CO3负载对Wyodak煤的催化气化的影响。 考虑到Na 2 CO 3熔点(850℃)来选择所研究的温度范围(700-900℃)以减少钠的挥发损失。 发现在热解和气化步骤期间钠都具有活性。 催化剂在添加量约3重量%时是最具成本效益的。 随机孔模型提供了在催化和非催化条件下收集的转化对时间数据的良好拟合。

    COST-EFFECTIVE CATALYST FOR GASIFICATION OF POWDER RIVER BASIN COAL
    2.
    发明申请
    COST-EFFECTIVE CATALYST FOR GASIFICATION OF POWDER RIVER BASIN COAL 有权
    用于生产粉煤ER石煤的成本有效的催化剂

    公开(公告)号:US20130032761A1

    公开(公告)日:2013-02-07

    申请号:US13566492

    申请日:2012-08-03

    IPC分类号: C01B31/18 C09K3/00

    摘要: The present invention generally relates to a catalytic gasification of coal. Catalytic gasification of a Wyodak low-sulfur sub-bituminous coal from the Powder River Basin of Wyoming was investigated using an inexpensive sodium carbonate catalyst applied via incipient wetness impregnation. Experiments in an atmospheric pressure fixed-bed laboratory gasifier were performed to evaluate the effects of reaction temperature, feed gas steam content, and Na2CO3 loading on the catalytic gasification of the Wyodak coal. The temperature range investigated (700-900° C.) was selected with consideration of the Na2CO3 melting point (850° C.) to reduce the loss by volatilization of sodium. Sodium was found to be active during both pyrolysis and gasification steps. The catalyst was most cost-effective at addition levels of approximately 3 wt %. The random pore model provided a good fit to the conversion versus time data collected under both the catalytic and the uncatalytic conditions.

    摘要翻译: 本发明一般涉及煤的催化气化。 使用廉价的碳酸钠催化剂,通过初始湿度浸渍法研究了怀俄明州粉河流域Wyodak低硫次烟煤的催化气化。 进行大气压固定床实验室气化炉的实验,以评估反应温度,进料气体蒸汽含量和Na2CO3负载对Wyodak煤催化气化的影响。 考虑到Na 2 CO 3熔点(850℃)来选择所研究的温度范围(700-900℃)以减少钠的挥发损失。 发现在热解和气化步骤期间钠都具有活性。 催化剂在添加量约3重量%时是最具成本效益的。 随机孔模型提供了在催化和非催化条件下收集的转化对时间数据的良好拟合。

    Recovery of carboxylic acid from byproduct stream
    7.
    发明申请
    Recovery of carboxylic acid from byproduct stream 审中-公开
    从副产物流中回收羧酸

    公开(公告)号:US20050049433A1

    公开(公告)日:2005-03-03

    申请号:US10927364

    申请日:2004-08-26

    IPC分类号: C07C51/02 C07C51/41 C07C51/42

    摘要: A novel method for recovering carboxylic acid from a waste water stream is described. The method involves first neutralizing the carboxylic acid in the waste water with CaO or Ca(OH)2 to form calcium carboxylate. The resulting calcium carboxylate is then reacted with sulfite or sulfate to regenerate the carboxylic acid. The resulting waste water typically has a carboxylic acid content of at least 25-wt %.

    摘要翻译: 描述了从废水流中回收羧酸的新方法。 该方法首先用CaO或Ca(OH)2中和废水中的羧酸以形成羧酸钙。 然后将所得羧酸钙与亚硫酸盐或硫酸盐反应以再生羧酸。 所得废水通常具有至少25重量%的羧酸含量。

    REMOVAL OF ELEMENTS FROM COAL FLY ASH
    9.
    发明申请
    REMOVAL OF ELEMENTS FROM COAL FLY ASH 有权
    从煤飞灰去除元素

    公开(公告)号:US20130317274A1

    公开(公告)日:2013-11-28

    申请号:US13901533

    申请日:2013-05-23

    IPC分类号: A62D3/36

    摘要: A method for removing elements, including heavy metals, from fly ash and from fly ash resulting from removal of SOx/NOx from flue gas using Na2CO3/NaHCO3/trona, is described. An aqueous suspension of the fly ash and/or a solution of the leachate from the fly ash is treated with dissolved ferrous compounds, such as FeSO4.7H2O and/or FeCl2.4H2O, at a chosen initial acidic pH, and the precipitation of the ferrous ions as the solution basifies sequesters the trace elements.

    摘要翻译: 描述了使用Na 2 CO 3 / NaHCO 3 /天然碱从烟灰中除去来自飞灰和从烟道气中除去SO x / NO x产生的飞灰的元素(包括重金属)的方法。 在所选择的初始酸性pH下,用溶解的亚铁化合物如FeSO 4·7H 2 O和/或FeCl 2·4H 2 O处理飞灰和/或来自飞灰的渗滤液的溶液的水悬浮液, 作为溶液的亚铁离子可以螯合微量元素。

    Method for Synthesis of MultiFunctional FE6+ - FE3+ Agent
    10.
    发明申请
    Method for Synthesis of MultiFunctional FE6+ - FE3+ Agent 审中-公开
    多功能FE6 + - FE3 +剂的合成方法

    公开(公告)号:US20130200009A1

    公开(公告)日:2013-08-08

    申请号:US13537780

    申请日:2012-06-29

    申请人: Maohong Fan

    发明人: Maohong Fan

    IPC分类号: C02F1/72 C01D1/02

    摘要: The present invention is a new, easy method for preparing stable solid Fe6+—Fe3+ agents in a fixed bed reactor by using O3 and FeOOH along with KOH with conversion efficiencies of approximately 27%. In addition, the product has been used to oxidize oil from water and to destroy tetracycline in water

    摘要翻译: 本发明是一种用于在固定床反应器中制备稳定的固体Fe6 + -Fe3 +试剂的方法,其中O 3和FeOOH与KOH一起转化效率约为27%。 此外,该产品已经用于从水中氧化油并破坏水中的四环素