公开(公告)号：US20130255153A1

公开(公告)日：2013-10-03

申请号：US13771456

申请日：2013-02-20

Applicant: HITACHI, LTD.

Inventor： Takashi SASAKI ,  Tomoko AKIYAMA

IPC: B01J27/19 ,  C10J3/82

CPC classification number: B01J27/19 ,  B01J21/063 ,  B01J21/066 ,  B01J23/28 ,  B01J23/755 ,  B01J37/0027 ,  B01J37/04 ,  B01J37/20 ,  B01J37/28 ,  C10J3/82 ,  C10J2300/093 ,  C10J2300/1653 ,  C10J2300/1807 ,  C10J2300/1884 ,  C10K1/005 ,  C10K1/06 ,  C10K3/04 ,  Y02E20/16 ,  Y02E20/18 ,  Y02P20/52

Abstract: Disclosed is a method of gas purification, a coal gasification plant, and a shift catalyst, each of which enables an inexpensive treatment of condensed water derived from steam used in a CO shift reaction. A CO shift reaction is performed using a shift catalyst less causing side reactions (e.g., a P—Mo—Ni-supported shift catalyst), and condensed water derived from steam used in the CO shift reaction is reused or treated. The method includes a cleaning step of removing water-soluble substances from a gasified gas containing CO and H2S; a CO shift step of allowing CO in a gas after the cleaning step to react with steam by the catalysis of the shift catalyst to convert CO into CO2 and H2; and a recovery step of removing CO2 and H2S from a gas after the CO shift step, in which post-shift condensed water formed after the CO shift step is recycled.

Abstract translation: 本发明公开了一种气体净化方法，煤气化装置和变换催化剂，其能够廉价地处理来自CO转化反应中使用的蒸汽的冷凝水。 使用较少引起副反应的转移催化剂（例如，P-Mo-Ni负载型变换催化剂）进行CO转化反应，并且再利用或处理由CO转化反应中使用的蒸汽得到的冷凝水。 该方法包括从含有CO和H 2 S的气化气体中除去水溶性物质的清洗步骤; CO漂移步骤，其通过催化转化催化剂将CO转化为CO 2和H 2后，使清洗步骤中的气体中的CO与蒸汽反应; 以及在CO转移步骤之后的气体中除去CO 2和H 2 S的回收步骤，其中在CO转移步骤之后形成的变换后冷凝水被再循环。

公开(公告)号：US20140147362A1

公开(公告)日：2014-05-29

申请号：US14081421

申请日：2013-11-15

Applicant: Hitachi, Ltd.

Inventor： Takashi SASAKI ,  Tomoko AKIYAMA

IPC: B01J23/883 ,  C01B3/58

CPC classification number: B01J23/883 ,  B01J21/063 ,  B01J23/8877 ,  C01B3/16 ,  C01B2203/0288 ,  C01B2203/0415 ,  C01B2203/0465 ,  C10J2300/093 ,  C10J2300/165 ,  C10J2300/1675 ,  C10K1/003 ,  C10K1/08 ,  C10K1/101 ,  C10K3/04 ,  Y02P20/52

Abstract: A gas purification method is disclosed for a coal gasifier plant, with which energy loss accompanying recovery of CO2 can be suppressed and soundness of a CO shift catalyst can be maintained in the plant. The method includes a scrubbing step for a product gas produced by gasification of a carbon-containing solid fuel and containing at least CO and H2S to remove water-soluble substances contained in the product gas; a CO shift step to react CO in the product gas after scrubbing with steam using a shift catalyst and converting the gas into CO2 and H2; and a CO2/H2S recovery to remove CO2 and H2S from the product gas after the CO shift step, wherein the CO shift step is constituted by a multistage shift reactor which includes multiple stages of shift reactors, and shift reactors upstream and downstream have high- and low-temperature shift catalysts, respectively.

Abstract translation: 公开了一种用于煤气化炉设备的气体净化方法，能够抑制伴随CO 2回收的能量损失，并且可以在设备中保持CO变换催化剂的良好性。 该方法包括用于通过气化含碳固体燃料并至少含有CO和H 2 S产生的产物气体以除去产物气体中所含的水溶性物质的洗涤步骤; CO转移步骤，使用变换催化剂用蒸汽洗涤后将产物气体中的CO反应并将气体转化为CO 2和H 2; 和CO 2 / H 2 S回收，以在CO转移步骤之后从产物气体中除去CO 2和H 2 S，其中CO转移步骤由包括多级变换反应器的多级变换反应器构成， 和低温变换催化剂。