公开(公告)号：US6010669A

公开(公告)日：2000-01-04

申请号：US793928

申请日：1997-03-21

Applicant: Cesare Miola ,  Franco Granelli

Inventor： Cesare Miola ,  Franco Granelli

IPC: B01J3/00 ,  B01J3/04 ,  B01J19/00 ,  B01J19/02 ,  B23K31/02 ,  B23P6/00 ,  C07C273/04

CPC classification number: C07C273/04 ,  B01J19/0073 ,  B01J19/02 ,  B01J3/04 ,  B01J3/048 ,  B23P6/00 ,  B01J2219/00256 ,  B01J2219/0236 ,  B01J2219/185 ,  B01J2219/1943 ,  B23K2201/12 ,  Y02P20/142 ,  Y02P20/149 ,  Y02P20/582

Abstract: A method for repairing and restoring the functionality of equipment subjected to internal corrosion during its operation at high or medium pressure in a plant for the synthesis of urea. The method includes the cleaning of the corroded area, the formation of suitable supporting and/or holding surfaces for the placement of a new metallic lining, the formation of a new anticorrosive sealed off lining, obtained by positioning and welding flat elements and metallic plates which are suitably shaped and placed next to each other to become adapted to the internal profile of the equipment. The spaces and interstices below this new lining all communicate with at least one weep-hole present in the pressure resistant body. The entire repair is carried out through the manhole of the equipment and enables the restoring of its functionality for times similar to the normal duration of corresponding newly constructed equipment.

Abstract translation: PCT No.PCT / EP95 / 03539 Sec。 371日期1997年3月21日 102（e）1997年3月21日PCT PCT 1995年9月8日PCT公布。 出版物WO96 / 09136 日期1996年3月28日在用于合成尿素的设备中在高压或中压操作期间内部腐蚀的设备的功能性的修复和恢复方法。 该方法包括清洁被腐蚀区域，形成用于放置新的金属衬里的合适的支撑和/或保持表面，形成通过定位和焊接扁平元件和金属板获得的新的防腐密封衬 适当地成形并且彼此相邻放置以适应于设备的内部轮廓。 这个新衬里下面的空间和间隙都与耐压体中存在的至少一个排水孔相通。 整个修理通过设备的人孔进行，并使其功能恢复类似于相应的新建设备的正常持续时间。

公开(公告)号：US06412684B1

公开(公告)日：2002-07-02

申请号：US09169984

申请日：1998-10-13

Applicant: Cesare Miola

Inventor： Cesare Miola

IPC: B23K3100

CPC classification number: B32B15/011 ,  B01J19/02 ,  B01J2219/00256 ,  B01J2219/0236 ,  B23K9/18 ,  Y02P20/142

Abstract: The present invention relates to a new type of lining with two layers, one of which, obtained by welding deposit, can be used for the protection of internal surfaces of chemical equipment capable of abide pressures lower than 100 MPa, in processes for the direct synthesis of urea. The present invention also relates to an original method for the preparation and installation of this lining, by the assembly of laminar elements with two layers, obtained by welding deposit on relatively thin stainless steel plates, so as to avoid significant distorsion effects on the plate itself.

Abstract translation: 本发明涉及一种具有两层的新型衬里，其中一层通过焊接沉积获得，可用于保护能够承受低于100MPa压力的化学设备的内表面，在直接合成过程中 的尿素。 本发明还涉及一种用于制备和安装该衬里的原始方法，通过将相对薄的不锈钢板上的焊接沉积获得的通过组装具有两层的层状元件组合，以避免对板本身造成显着的变形影响 。

公开(公告)号：US06267289B1

公开(公告)日：2001-07-31

申请号：US09142163

申请日：1998-09-21

Applicant: Cesare Miola

Inventor： Cesare Miola

IPC: B23K3100

CPC classification number: B01J3/048 ,  B01J19/0073 ,  B01J19/02 ,  B01J2219/00256 ,  B01J2219/0204 ,  B01J2219/0286 ,  C07C273/04 ,  Y02P20/142 ,  Y02P20/149

Abstract: Method for the safety and extension of the operating life of pressure equipment having an internal chamber suitable for containing a process fluid, surrounded by a pressure-resistant body (1) equipped with weep-holes (2), made of a material subject to corrosion by contact with said process fluid operation, coated inside with an anticorrosive lining (4) made up of several elements welded to each other, wherein said lining weldings (3) are completely isolated from contact with the process fluid of the normal operating run, by a coating with adjoining strips (or plates) (10, 10′, 10″, 10′″), of the same material as said lining (4) or other corrosion-resistant material weldable thereto, which are subsequently seal-welded on the edges to said lining (4) and to each other, characterized in that the arrangement and welding of the edges of these strips (10, 10′, 10″, 10′″) are such to create a network of underlying interstices (or meati) (9,11), communicating with each other and at least one weep-hole.

Abstract translation: 具有适于容纳工艺流体的内部室的压力设备的使用寿命的安全和延长的方法，包括由耐腐蚀材料制成的带有漏孔（2）的耐压体（1）包围的耐压体（1） 通过与所述工艺流体操作接触，在内部涂覆有由彼此焊接的多个元件组成的防腐衬里（4），其中所述衬里焊接（3）与正常工作流程的工艺流体的接触完全隔离， 具有与所述衬里（4）相同的材料或与其可焊接的其它耐腐蚀材料相邻的带（或板）（10,10'，10“，10”）的涂层，随后被密封焊接 在所述衬里（4）和彼此之间的边缘上，其特征在于，这些条（10,10'，10“，10”'）的边缘的布置和焊接是这样构成的， 间隔（或肉）（9,11），彼此沟通，至少o ne weep-hole。

公开(公告)号：US4899813A

公开(公告)日：1990-02-13

申请号：US173032

申请日：1988-03-22

Applicant: Sergio Menicatti ,  Cesare Miola ,  Franco Granelli

Inventor： Sergio Menicatti ,  Cesare Miola ,  Franco Granelli

IPC: B01J19/02 ,  B01J19/24 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  F28F19/06

CPC classification number: B01J19/02 ,  B01J19/2425 ,  C07C273/04 ,  F28F19/06 ,  B01J2219/0236 ,  B01J2219/0286 ,  Y02P20/142

Abstract: Process and apparatus for the production of urea, wherein the carbamate decomposers and/or condensers are equipped with stainless steel tubes internally lined with zirconium.

Abstract translation: 用于生产尿素的方法和设备，其中氨基甲酸酯分解器和/或冷凝器装有内衬衬有锆的不锈钢管。