Abstract:
Applicants have created a method and system of deep sea mining comprising mining SMS deposits from the sea floor with a subsea miner, pumping the solids from the subsea miner through a jumper and pumping the solids from the jumper up a riser to a surface vessel. Further, applicants have created a method of deploying a deep sea mining system, comprising stacking a riser hangoff structure on top of a subsea pump module forming an assembly; picking up the assembly by a hanging mechanism, hanging the assembly on a moon pool, attaching a first riser joint; disconnecting the riser hangoff structure from the assembly; and attaching at least one second riser joint to form the riser.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for fixing metallic sodium in glass form and more particularly to seal the metallic sodium containing radioactive elements. SOLUTION: This method includes an introduction process of introducing vitrified matrix precursor, sodium in metallic state, and iron oxide Fe 2 O 3 , in amount sufficient to ensure oxidation of the metallic sodium introduced into a reactor in a dispersed form; a mixing process of producing homogeneous mixture; a heating process heating the mixture obtained to a temperature of between 1,000 and 1,600°C, whereby the homogeneous mixture in molten state is formed, in which the sodium initially introduced is in the sodium oxide state; and a cooling process of recovering the molten mixture obtained by the heating process and cooling it, whereby the vitrified matrix of homogenous composition is obtained that incorporates the initially introduced sodium as constituent oxide of the said vitrified matrix. COPYRIGHT: (C)2004,JPO
Abstract:
The invention relates to a process for thermally cracking a hydrocarbon feed in an installation comprising a radiant section (6) and a convection section (7), wherein a hydrocarbon feed stock is fed to a feed preheater 1 present in the convection section 7, the heat pick-up of the feed preheater 1 is controlled by regulating the heat exchange capacity of an economiser 9, said economiser 9 being located in the convection section 7 between the feed preheater 1 and the radiant section 6, and wherein the feed heated in the preheater 1 is thereafter cracked in the radiant section. The invention further relates to an installation for cracking a hydrocarbon feed.
Abstract:
The invention relates to a process for thermally cracking a hydrocarbon feed in an installation comprising a radiant section (6) and a convection section (7), wherein a hydrocarbon feed stock is fed to a feed preheater 1 present in the convection section 7, the heat pick-up of the feed preheater 1 is controlled by regulating the heat exchange capacity of an economiser 9, said economiser 9 being located in the convection section 7 between the feed preheater 1 and the radiant section 6, and wherein the feed heated in the preheater 1 is thereafter cracked in the radiant section. The invention further relates to an installation for cracking a hydrocarbon feed.
Abstract in simplified Chinese:本发明关于一种在含辐射区(6)与对流区(7)的设备之中热裂解烃进料的方法,其中将烃进料送入存在于对流区7的进料预热器1中,进料预热器1的热截取经由调节节省器9的热交换容量而控制,让节省器9位在对流区7之中介于进料预热器1与辐射区6之间,且其中在预热器1中加热后的进料在辐射区之中裂解。本发明进一步关于一种用于裂解烃进料的设备。