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Phase flow

To prepare gas for evacuation it is necessary to separate the gas and liquid phases and extract or inhibit any components in the gas which are likely to cause pipeline corrosion or blockage. Components which can cause difficulties are water vapour (corrosion, hydrates), heavy hydrocarbons (2-phase flow or wax deposition in pipelines), and contaminants such as carbon dioxide (corrosion) and hydrogen sulphide (corrosion, toxicity). In the case of associated gas, if there is no gas market, gas may have to be flared or re-injected. If significant volumes of associated gas are available it may be worthwhile to extract natural gas liquids (NGLs) before flaring or reinjection. Gas may also have to be treated for gas lifting or for use as a fuel. [Pg.249]

Figure 2. Principle of 3 phase flow measurements by the continuous dilution tracer method. Figure 2. Principle of 3 phase flow measurements by the continuous dilution tracer method.
Figure C3.6.2 (a) The (fi2,cf) Poincare surface of a section of the phase flow, taken at ej = 8.5 with cq < 0, for the WR chaotic attractor at k = 0.072. (b) The next-amplitude map constmcted from pairs of intersection coordinates. ..,(c2(n-l-l),C2(n-l-2),C2(n-l-l)),...j. The sequence of horizontal and vertical line segments, each touching the diagonal B and the map, comprise a discrete trajectory. The direction on the first four segments is indicated. Figure C3.6.2 (a) The (fi2,cf) Poincare surface of a section of the phase flow, taken at ej = 8.5 with cq < 0, for the WR chaotic attractor at k = 0.072. (b) The next-amplitude map constmcted from pairs of intersection coordinates. ..,(c2(n-l-l),C2(n-l-2),C2(n-l-l)),...j. The sequence of horizontal and vertical line segments, each touching the diagonal B and the map, comprise a discrete trajectory. The direction on the first four segments is indicated.
The quasiperiodic route to chaos is historically important. It arises from a succession of Hopf birfurcations. As already noted, a single Hopf bifurcation results in a limit cycle. The next Hopf bifurcation produces a phase flow tliat can be represented on tire surface of a toms (douglmut). This flow is associated witli two frequencies if tire ratio of tliese frequencies is irrational tlien tire toms surface is densely covered by tire phase trajectory, whereas if... [Pg.3063]

A convenient and constructive approach to attain symplectic maps is given by the composition of symplectic maps, which yields again a symplectic map. For appropriate Hk, the splittings (6) and (7) are exactly of this form If the Hk are Hamiltonians with respect to the whole system, then the exp rLnk) define the phase flow generated by these Hk- Thus, the exp TL-Hk) are symplectic maps on the whole phase space and the compositions in (6) and (7) are symplectic maps, too. Moreover, in order to allow for a direct numerical realization, we have to find some Hk for which either exp(rL-Kfc) has an analytic solution or a given symplectic integrator. [Pg.400]

In general, the longer a chromatographic column, the better will be the separation of mixture components. In modem gas chromatography, columns are usually made from quartz and tend to be very long (coiled), often 10-50 m, and narrow (0.1-1.0 mm, internal diameter) — hence their common name of capillary columns. The stationary phase is coated very thinly on the whole length of the inside wall of the capillary column. Typically, the mobile gas phase flows over the stationary phase in the column at a rate of about 1-2 ml/min. [Pg.249]

Aluminum-containing propellants deflver less than the calculated impulse because of two-phase flow losses in the nozzle caused by aluminum oxide particles. Combustion of the aluminum must occur in the residence time in the chamber to meet impulse expectations. As the residence time increases, the unbumed metal decreases, and the specific impulse increases. The soHd reaction products also show a velocity lag during nozzle expansion, and may fail to attain thermal equiUbrium with the gas exhaust. An overall efficiency loss of 5 to 8% from theoretical may result from these phenomena. However, these losses are more than offset by the increase in energy produced by metal oxidation (85—87). [Pg.39]

Motionless inline mixers obtain energy for mixing and dispersion from the pressure drops developed as the phases flow at high velocity through an array of baffles or packing in a tube. Performance data on the Kenics (132) and Sul2er (133) types of motionless mixer have been reported. [Pg.75]

In addition to the reduction in performance, flow maldistribution may result in increased corrosion, erosion, wear, fouling, fatigue, and material failure, particularly for Hquid flows. This problem is even more pronounced for multiphase or phase change flows as compared to single-phase flows. Flow distribution problems exist for almost all types of exchangers and can have a significant impact on energy, environment, material, and cost in most industries. [Pg.496]

The pressure drop for gas—Hquid flow is deterrnined by the Lockhart-MartineUi method. It is assumed that the AP for two-phase flow is proportional to that of the single phase times a function of the single-phase pressure drop ratio P. [Pg.437]

In the macroscopic heat-transfer term of equation 9, the first group in brackets represents the usual Dittus-Boelter equation for heat-transfer coefficients. The second bracket is the ratio of frictional pressure drop per unit length for two-phase flow to that for Hquid phase alone. The Prandd-number function is an empirical correction term. The final bracket is the ratio of the binary macroscopic heat-transfer coefficient to the heat-transfer coefficient that would be calculated for a pure fluid with properties identical to those of the fluid mixture. This term is built on the postulate that mass transfer does not affect the boiling mechanism itself but does affect the driving force. [Pg.96]

Internal Flow. Depending on the atomizer type and operating conditions, the internal fluid flow can involve compHcated phenomena such as flow separation, boundary layer growth, cavitation, turbulence, vortex formation, and two-phase flow. The internal flow regime is often considered one of the most important stages of Hquid a tomiza tion because it determines the initial Hquid disturbances and conditions that affect the subsequent Hquid breakup and droplet dispersion. [Pg.328]

A. M. Nazar and T. W. Clyne in T. N. Vezkoglu, ed.. Proceedings Multi-Phase Flow and Heat Transfer Symposium Hemisphere, Washington, D.C., 1980. [Pg.452]

Liquids and Gases For cocurreut flow of liquids and gases in vertical (upflow), horizontal, and inclined pipes, a veiy large literature of experimental and theoretical work has been published, with less work on countercurrent and cocurreut vertical downflow. Much of the effort has been devoted to predicting flow patterns, pressure drop, and volume fractious of the phases, with emphasis on hilly developed flow. In practice, many two-phase flows in process plants are not fully developed. [Pg.652]

Rapid approximate predictions of pressure drop for fully developed, incompressible horizontal gas/fiquid flow may be made using the method of Lockhart and MartineUi (Chem. Eng. Prog., 45, 39 8 [1949]). First, the pressure drops that would be expected for each of the two phases as if flowing alone in single-phase flow are calculated. The LocKhart-Martinelli parameter X is defined in terms of the ratio of these pressure drops ... [Pg.653]


See other pages where Phase flow is mentioned: [Pg.3060]    [Pg.3062]    [Pg.349]    [Pg.246]    [Pg.248]    [Pg.250]    [Pg.18]    [Pg.74]    [Pg.74]    [Pg.97]    [Pg.493]    [Pg.496]    [Pg.499]    [Pg.501]    [Pg.55]    [Pg.99]    [Pg.506]    [Pg.508]    [Pg.510]    [Pg.512]    [Pg.519]    [Pg.526]    [Pg.107]    [Pg.107]    [Pg.216]    [Pg.162]    [Pg.535]    [Pg.172]    [Pg.439]    [Pg.474]    [Pg.591]    [Pg.622]    [Pg.652]    [Pg.652]    [Pg.652]    [Pg.653]   
See also in sourсe #XX -- [ Pg.3 , Pg.4 , Pg.5 ]




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Adsorption with Cross Flow of Gas and Adsorbent Phases

Amorphous phase, viscous flow

Basic Laws of Single-Phase Flow

Boiling and Two-phase Flow in Microchannels

Capillary electrochromatography mobile phase electroosmotic flow

Case Study 1 Flow-induced Phase Separation in Polymer Solutions

Cell single-phase flow

Channels single-phase flow

Continuous flow phase-transfer catalysis

Convective heat and mass transfer. Flows with phase change

Convective heat and mass transfer. Single phase flow

Countercurrent bulk flow of two phases

Countercurrent bulk flow of two phases system type

Determining the Pressure Drop in Single-Phase Flow - Final Equation

Dilute-phase flow

Dimensional Analysis of Forced Convection in a Single-Phase Flow

Dispersed multiphase flows coupling between phase

Drops in two-phase flow

Dual phase flow

Effect of adsorbed polymer on two-phase flow and relative permeabilities

Effects of Mobile Phase Choice and Flow Parameters

Electrokinetic Two-Phase Flows

Emulsion phase flow

Estimating Inlet Drop Size for Two-Phase Mist-Annular Flow

Evaporative two-phase flow

Flow Past Drops With a Membrane Phase

Flow Patterns and Pressure Drop of Ionic Liquid-Water Two-Phase Flows

Flow Patterns of the Various Phases

Flow Programming with a Compressible Mobile Phase

Flow and Diffusion in the Mobile Phase

Flow behavior phase

Flow columnar phases

Flow cytometry phase analysis

Flow diagram extractor phases

Flow diagram of the polypropylene horizontal reactor gas phase process

Flow diagram of the polypropylene vertical reactor gas phase process

Flow methods in the gas phase

Flow of Continuous Phase

Flow phase transitions

Flow rate of mobile phase

Flow reactors liquid-phase

Flow regime liquid phase

Flow sheets organic phase composition

Flow-induced phase transitions

Flow-rate of the mobile-phase

Fluid-particle system flow, phase diagrams

For two-phase flow

Forced-flow mobile phase velocity

Form for two-phase flow

Fundamentals of Single-Phase and Multiphase Flow

Gas and Liquid Phase in Plug Flow

Gas-Liquid Two-Phase Flows in Cylindrical Bath

Gas-Liquid Two-Phase Flows in Pipes

Gas-liquid two-phase flow

Gaseous-Phase Flow Calorimeters

General Remarks on Subcooled Liquids and 2-Phase Flow

General aspects Flow regimes, liquid holdup, two-phase pressure drop, and wetting efficiency

Governing Equations for Single Phase Flow

Granular flow dense phase approach

Granular flow dilute phase approach

Hard phase plastic flow stress

Heat Transfer in Single-Phase Flows

Heat Transfer in Two-Phase Flow Boiling

Heat flow phase

Heat flow phase angle signal

Heat flow phase changes

Homogeneous liquid-phase flow

Homogeneous liquid-phase flow reactors

Hydraulics — two-phase flow

Laminar flows, single phase

Law of resistance for single-phase flow

Lean phase flow

Lean phase flow transport

Liquid Transfer Techniques Avoiding 2-Phase Flow

Liquid Transfer with Transient 2-Phase Flow

Liquid Transfers Avoiding 2-Phase Flow

Lockhart-Martinelli two-phase flow

Lockhart-Martinelli two-phase flow parameter

Mass transfer in two-phase flow

Metal three phase flow conditions

Micro-two-phase sheath flow method

Microchannels three-phase flow

Mixed phase flow

Mixed-phase vapor/liquid flow

Mobile phase flow

Mobile phase flow rate

Mobile phases, flow calibration

Modeling of Single-Phase Flows

Modeling two-phase flow

Molecular flow, single-phase

Momentum equation for two-phase flow

Mono-phase flow

Mukheqee two-phase flow

Multi-phase flow

Multiphase flows, definition phase

Multiphase flows, with phase

Multiphase flows, with phase change

Noise mobile phase/flow temperature

Occurrence of 2-Phase Flow

One-Dimensional Two-Phase Flow

One-phase Flow in Pipelines

Overview of possible two-phase flow models

Permeability single-phase fluid flow

Phase Flow Absorption

Phase Separation and Flow

Phase behavior under flow

Phase change induced flow

Phase deviation from plug flow

Phase deviation from plug flow liquid

Phase diagrams, fluid-particle flow

Phase flow rate

Phase flow ratio

Phase under continuous flow (review

Phase-space flow

Phases and Flow Calibration

Phenomenon flow induced phase

Piston flow reactor liquid-phase

Porous media single-phase flow

Porous solids single-phase fluid flow

Possible model assumptions for two-phase flow in relief systems

Pressure Drop and Heat Transfer in a Single-Phase Flow

Pressure Drop in Two-Phase Flow Boiling

Pressure correction equation single phase flows

Pressure drop in two-phase flow

Pressure drop single phase flow

Pressure drop, piplines two-phase flow

Pressure-Driven Single-Phase Gas Flows

Pressure-Driven Single-Phase Liquid Flows

Pressure-Driven Two-Phase Flows

Principles of LDA for Two-Phase Flows

Process units mixed phase flow

RTD Studies on Liquid-phase Flows

Reversed-phase columns flow rate

Reversed-phase flow chart

Saturation two-phase flow

Simulation of Gas (Vapor)-Liquid Two-Phase Flow

Single-Phase Convective Flows

Single-Phase Convective Flows Microchannels

Single-Phase Flow in Channels

Single-Phase Flow in Fixed-Bed Reactors

Single-Phase Flow in a Curved Pipe

Single-Phase Fluid Flow Energy Balance

Single-Phase Gaseous Flows

Single-Phase Gaseous Flows Microchannels

Single-phase flow

Single-phase flow continuity

Single-phase flow equations

Single-phase flow turbulence

Single-phase flow viscous fluid

Single-phase flow, in porous

Single-phase flow, in porous media

Single-phase flows model

Single-phase flows nonreacting

Single-phase flows reacting

Single-phase flows, modeling

Single-phase fluid flow

Single-phase fluid flow shear factor

Solid-phase synthesis continuous-flow

Solution-Phase Flow Calorimeters

Some empirical equations for heat transfer in two-phase flow

Special LDA-Systems for Two-Phase Flow Studies

Stratified two-phase flow

Supported Ionic Liquid Phase Catalysts with Supercritical Fluid Flow

TWO-PHASE FLOW COMBUSTION

The Flow of Nonaqueous Phase Liquids

The different heat transfer regions in two-phase flow

The homogeneous model for two-phase flow

Thermal Convection in Pseudocontinuum One-Phase Flow

Three phase flow

Three-Phase Reactors with a Plug Flow

Time-phased cash flow

Transfer in Two-Phase Flow

Transient two-phase flow

Transition flows (single phase

Trauma flow phase

Turbulent single-phase flow

Turbulent two-phase flows

Two Phase Flow of Emulsions

Two phase flow line pressure drop calculation

Two phase flow regions estimation

Two-Phase Flow Characteristics

Two-Phase Flow Models and Computational Fluid Dynamics

Two-Phase Flow Relief Sizing for Runaway Reaction

Two-Phase Flow Through Porous Media

Two-Phase Flow Valve and Fitting Losses

Two-Phase Flow and Flash Vaporization

Two-Phase Flow and Reaction in Fixed Beds

Two-Phase Flow in Ceramic Monoliths

Two-Phase Flow in Continuous Casting

Two-Phase Flow in Fixed-Bed Reactors

Two-Phase Flow with Boiling

Two-Phase Fluid Flow Energy Balance

Two-Phase and Flashing Flow

Two-phase Flow in Trickle-Bed Reactors

Two-phase capillary flow

Two-phase flow

Two-phase flow Calculations

Two-phase flow conditions

Two-phase flow friction factor

Two-phase flow pattern

Two-phase flow pressure drop

Two-phase flow regimes

Two-phase flow relief sizing

Two-phase flow structures

Two-phase flow, in porous media

Two-phase flows filtration with tubular membranes

Two-phase fluid flow Lockhart-Martinelli method

Two-phase fluid flow correlations

Two-phase fluid flow granular beds

Two-phase fluid flow homogeneous model

Two-phase fluid flow patterns

Two-phase fluid flow pressure drop, calculation example

Two-phase fluid flow void fraction

Two-phase gas (vapour)-liquid flow

Two-phase slug flow

Two-phase steady cocurrent flow

Two-phase stopped-flow method

Velocity Field and Pressure Drop in Single-Phase Flows

Viscosity single phase flow

Viscous flow of amorphous phase

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