摘要:
Vapor and liquid flow concurrently through a vertical vessel. A horizontal flow obstructing mixing device is located within the vessel and forces the vapor and liquid to pass in a vertical direction through one or more inlet openings to the mixing device. The mixing device consists of circular top and bottom walls and a cylindrical side wall. Inside the mixing device curved flow baffles are provided. These flow baffles form one or more tangential inlet orifices, which are located as far from the vessel centerline as possible. The entire process stream flows through the one or more tangential inlet orifices at high flow velocity and in a tangential direction into a swirl box. The high momentum of the process stream in the tangential inlet orifices, the pure tangential direction of the stream, and the large distance between the tangential inlet orifice(s) and the vessel centerline result in a violet swirling flow and in a large number of fluid rotations in the swirl box. The large number of fluid rotations in the swirl box is essential to properly mix the stream(s) entering through the tangential inlet orifice(s) with each other. The fluids exit the mixing device in a vertical direction through an outlet opening in the bottom wall of the mixing device. An impingement plate is located below this outlet opening to spread the liquid and to break down the velocity of the jet. The temperature and chemical composition of the outlet stream is equilibrated.
摘要:
Disclosed is a hydrogen generator that prevents the reformate water from bypassing the evaporator in a hydrogen generator, and the occurrence of sudden temperature changes within an evaporation flow path. The hydrogen generator comprises: an evaporator that produces a mixed gas by mixing a raw material gas containing methane with water vapor; a reformer that changes the mixed gas into a hydrogen-containing gas through a steam reforming reaction; and a combustor that supplies heat to the evaporator and the reformer. The evaporator comprises: an inner cylinder; an outer cylinder enclosing the inner cylinder; and a middle cylinder that is inserted between the inner cylinder and the outer cylinder, and that defines a helical flow path between the inner cylinder and the outer cylinder, through which water supplied from the outside flows. On the inner peripheral surface and the outer peripheral surface of the middle cylinder, helical projections and recesses are integrally formed at the front and back, the top surface of the projections on the inner peripheral surface of the middle cylinder come into contact with the outer peripheral surface of the inner cylinder, and the top surface of the projections on the outer peripheral surface of the middle cylinder come into contact with the inner peripheral surface of the outer cylinder.
摘要:
This invention relates to the internals of radial flow reactors used in the contact of fluids and solid particles. The apparatus comprises a duct (10) with apertures (14) for directing a fluid into a reactor. The apertures (14) are covered with louvers (16) which prevent the solid particles to flow through the apertures (14).
摘要:
The present invention discloses a method and an apparatus for mixing and atomizing a hydrocarbon stream using a diluent/dispersion stream. In one embodiment, the apparatus comprises: an inner conduit and an outer conduit concentric to each other to define an annular space, said outer conduit having an inlet for receiving the hydrocarbon stream and an outlet for dispensing a mixture comprising the hydrocarbon and the dispersion/diluent streams; a diluent/dispersion steam distributor being in connection with the inner conduit and defining a central orifice and a first set of orifices, said first set of orifices adapted to direct a first portion of the dispersion/diluent stream into the annular space and said central orifice adapted to direct a second portion of the diluent/dispersion stream into the inner conduit; atleast one contraction member and expansion member, said contraction member located downstream of the first set of orifices and said expansion member located downstream said expansion member; the inner conduit located downstream of said expansion member comprises a second set of orifices, said second set of orifices disposed on a periphery of the inner conduit and adapted to dispense a second portion of the dispersion/diluent stream into the annular space.
摘要:
The present invention relates to a mixing device mounted between two catalyst beds in a multi-bed catalytic reactor with a cylindrical shape, said mixing device has a circular outer rim which corresponds to the inner wall of the reactor, the mixing device comprises; collecting means disposed in a collecting section for collecting fluid from an up- stream catalytic bed, mixing means disposed in a mixing section for mixing the collected fluid, and discharging means disposed in a discharging section for discharging the mixed fluid to a down-stream catalytic bed; wherein the collecting section, the mixing section and the discharging section are disposed outside the center of the circular cross-section of the reactor, as well as associated methods for mixing and the use of such a mixing device in catalytic reactors.
摘要:
L'invention concerne une dispositif de distribution (1) d'un fluide comprenant: • au moins un tube d'admission (2) comportant des ouvertures (7) et ayant une première et seconde extrémité (3,4) ; • un couvercle (5) ayant un corps principal (6) de forme lenticulaire et de section circulaire et prolongé par une jupe (8) s'étendant dans le sens de la seconde extrémité (4) vers la première extrémité (3) du tube d'admission (2), ledit couvercle (5) ayant une surface externe et une surface interne, le couvercle étant solidaire de la seconde extrémité (4) du tube par la surface interne et le corps principal (6) étant pourvu d'une pluralité de trous (10),
et dans lequel le couvercle (5) comprend au moins un moyen de déflection (14) disposé sur sa surface externe et configuré pour diriger ou maintenir le gaz vers ou à la périphérie dudit couvercle (5).
摘要:
One exemplary embodiment can be a process for contacting one or more fluids in a vessel. The process may include passing one or more fluids into a chamber from an overhead tray and providing a conduit outside the chamber coupling a respective spillway to a respective hole for increasing contact time inside the conduit. Typically, the chamber forms one or more sidewalls forming at least one hole and the overhead tray forms at least one spillway.
摘要:
To provide a gas mixing device capable of safely mixing flammable gas containing, for example, methane or the like and combustion supporting gas such as oxygen-containing gas, and a synthesis gas producing device using this gas mixing device. Flammable gas containing methane or the like and combustion supporting gas such as oxygen-containing gas are supplied into a mixing vessel 20 via a first gas supplying section 22a and a second gas supplying section 22b respectively, and these gases are mixed within a combustion range in the vessel 20 to be discharged via a discharge section 24. In the mixing vessel 20, packings 31 to 33 for forming a large number of narrow gas flow passages in the vessel 20 are packed so that velocity of the mixed gas flowing in the vessel 20 becomes higher than burning velocity of the flammable gas and the combustion supporting gas.