Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Quick

The bubble and dew-point temperature calculations have been implemented by the FORTRAN IV subroutine BUDET and the pressure calculations by subroutine BUDEP, which are described and listed in Appendix F. These subroutines calculate the unknown temperature or pressure, given feed composition and the fixed pressure or temperature. They provide for input of initial estimates of the temperature or pressure sought, but converge quickly from any estimates within the range of validity of the thermodynamic framework. Standard initial estimates are provided by the subroutines. [Pg.119]

Examples of main programs calling subroutines FLASH and ELIPS for vapor-liquid and liquid-liquid separation calculations, respectively, are described in this Appendix. These are intended only to illustrate the use of the subroutines and to provide a means of quickly evaluating their performance on systems of interest. It is expected that most users will write their own main prograns utilizing FLASH and ELIPS, and the other subroutines presented in this monograph,to suit the requirements of their separation calculations. [Pg.347]

On the other hand, this approach has a number of advantages. Many different design options can be considered at the same time. Also, the entire design procedure can be accommodated in a computer program capable of producing designs quickly and efficiently. [Pg.13]

Even if the reactor temperature is controlled within acceptable limits, the reactor effluent may need to be cooled rapidly, or quenched, to stop the reaction quickly to prevent excessive byproduct formation. This quench can be accomplished by indirect heat transfer using conventional heat transfer equipment or by direct heat transfer by mixing with another fluid. A commonly encountered situation is... [Pg.42]

The reaction is very rapid and must be stopped quickly to prevent excessive byproduct formation. [Pg.43]

The reactor effluent might require cooling by direct heat transfer because the reaction needs to be stopped quickly, or a conventional exchanger would foul, or the reactor products are too hot or corrosive to pass to a conventional heat exchanger. The reactor product is mixed with a liquid that can be recycled, cooled product, or an inert material such as water. The liquid vaporizes partially or totally and cools the reactor effluent. Here, the reactor Teed is a cold stream, and the vapor and any liquid from the quench are hot streams. [Pg.329]

It is less dense than normal rock sail, does not cake so easily, dissolves more quickly. [Pg.128]

The international debt crisis was brought about by Western bankers in search of quick profit and is now one of our most pressing problems. This book looks at the background and shows what we must do to avoid disaster. [Pg.445]

The determination of the elemental composition of a petroleum cut is of prime importance because it provides a quick means of finding out the quality of a given cut or determining the efficiency of a refining process. In fact, the quality of a cut generally increases with the H/C ratio and in all cases, with a decrease in hetero-element (nitrogen, sulfur, and metals) content. [Pg.27]

In this manner, the KuQp of a petroieum cut can be calcuiated quickly from readily avkilable data, i. e., the specific gravity and the distillation curve. The A //np value is between 10 and 13 and defines the chemical nature of the cut as it will for the pure components. The characterization factor is extremely Va luable and widely used in refining although the discriminatory character of the Kuqp is less than that obtained by more modern physical methods described in 3.2 and 3.3. [Pg.42]

The chemistry of cement slurries is complex. Additives will be used to ensure the slurry remains pumpable long enough at the prevailing downhole pressures and temperatures but sets (hardens) quickly enough to avoid unnecessary delays in the drilling of the next hole section. The cement also has to attain sufficient compressive strength to withstand the forces exerted by the formation over time. A spacer fluid is often pumped ahead of the slurry to clean the borehole of mudcake and thereby achieve a better cement bond between formation and cement. [Pg.56]

If a situation arises whereby formation fluid or gas enters the bore bole the driller will notice an increase in the total volume of mud. Other indications such as a sudden increase in penetration rate and a decrease in pump pressure may also indicate an influx. Much depends on a quick response of the driller to close in the well before substantial volumes of formation fluid have entered the borehole. Onoe the BOP is closed, the new mud gradient required to restore balance to the system can be calculated. The heavier mud is then circulated in through the kill line and the lighter mud and influx is circulated out through the choke line. Once overbalance is restored, the BOP can be opened again and drilling operations continue. [Pg.60]

This type of contract requires the operator to pay a fixed amount to the contractor upon completion of the well, while the contractor furnishes all the material and labour and handles the drilling operations independently. The difficulty with this approach Is to ensure that a quality well Is delivered to the company since the drilling contractor will want to drill as quickly and cheaply as possible. The contractor therefore should guarantee an agreed measurable quality standard for each well. The guarantee should specify remedial actions which will be implemented should a substandard well be delivered. [Pg.62]

The contractor is paid per foot drilled. Whilst this will provide an incentive to make hole quickly, the same risks are involved as in the turnkey contract. Footage contracts are often used for the section above the prospective reservoir where hole conditions are less crucial from an evaluation or production point of view. [Pg.62]

In preparation for a field wide quick look correlation, all well logs need to be corrected for borehole inclination. This is done routinely with software which uses the measured depth below the derrick floor ( alonghole depth below derrick floor AHBDFor measured depth , MD) and the acquired directional surveys to calculate the true vertical depth subsea (TVSS). This is the vertical distance of a point below a common reference level, for instance chart datum (CD) or mean sea level (MSL). Figure 5.41 shows the relationship between the different depth measurements. [Pg.137]

An example of a quick lock interpretation employing the logs discussed so far is shown in Fig. 5.54. [Pg.149]

Volumetric estimates are required at all stages of the field life cycle. In many instances a first estimate of how big an accumulation could be is requested. If only a back of the envelope estimate is needed or if the data available is very sparse a quick look estimation can be made using field wide averages. [Pg.153]

The other parameters used in the calculation of STOMP and GIIP have been discussed in Section 5.4 (Data Interpretation). The formation volume factors (B and Bg) were introduced in Section 5.2 (Reservoir Fluids). We can therefore proceed to the quick and easy deterministic method most frequently used to obtain a volumetric estimate. It can be done on paper or by using available software. The latter is only reliable if the software is constrained by the geological reservoir model. [Pg.155]

From the probability distributions for each of the variables on the right hand side, the values of K, p, o can be calculated. Assuming that the variables are independent, they can now be combined using the above rules to calculate K, p, o for ultimate recovery. Assuming the distribution for UR is Log-Normal, the value of UR for any confidence level can be calculated. This whole process can be performed on paper, or quickly written on a spreadsheet. The results are often within 10% of those generated by Monte Carlo simulation. [Pg.169]

In the solution gas drive case, once production starts the reservoir pressure drops very quickly, especially above the bubble point, since the compressibility of the system is low. Consequently, the producing wells rapidly lose the potential to flow to surface, and not only is the plateau period short, but the decline is rapid. [Pg.188]

As small droplets of liquid are usually still present in the gas phase, demisting secWons are required to recover the liquid mist before it is carried over" in the gas stream out of the separator. The largest liquid droplets fall out of the gas quickly under the action of gravity but smaller droplets (less than 200 microns) require more sophisticated extraction systems. [Pg.245]

The failure mode of an equipment item describes the reason for the failure, and is often determined by analysing what causes historic failures in the particular item. This is another good reason for keeping records of the performance of equipment. For example, if it is recognised that a pump typically fails due to worn bearings after 8,000 hours in operation, a maintenance strategy may be adopted which replaces the bearings after 7,000 hours if that pump is a critical item. If a spare pump is available as a back-up, then the policy may be to allow the pump to run to failure, but keep a stock of spare parts to allow a quick repair. [Pg.288]

Different plant operating conditions (steady load, load variations, startups / shutdowns) have been encountered during the monitoring period. Electrical load, steam pressure and steam temperature values vs time have been acquired and stored during the entire period. At the same time, the RMS values of the acoustical background noise were have been continuously checked and stored, thus providing a quick check of proper instrumentation condition and a correlation between variations of plant parameters and the acoustical behaviour of the components. [Pg.78]

In non-destructive testing, there are almost as many procedures, needs or uses as users it is therefore important to be able to quickly modify the instrument in order to answer a new request. This new architecture is meant for such operations. [Pg.282]

For the examination of the applied metallic or ceramic layer, the test object is heated up from the outside The heat applying takes place impulse-like (4ms) by xenon-flash lamps, which are mounted on a rack The surface temperature arises to approx 150 °C Due to the high temperature gradient the warmth diffuses quickly into the material An incorrect layer, e g. due to a delamiation (layer removal) obstructs the heat transfer, so that a higher temperature can be detected with an infrared camera. A complete test of a blade lasts approximatly 5 minutes. This is also done automatically by the system. In illustration 9, a typical delamination is to be recognized. [Pg.405]

The modular design concept allows quick adoption of the tubes to changing radiation specifications. [Pg.537]

Often industry requires fast techniques to measure movements, deformations, etc. The optics methods, between them those based in speckle K gives quick solutions to this problems. [Pg.656]


See other pages where Quick is mentioned: [Pg.159]    [Pg.211]    [Pg.401]    [Pg.12]    [Pg.30]    [Pg.87]    [Pg.87]    [Pg.188]    [Pg.367]    [Pg.23]    [Pg.190]    [Pg.34]    [Pg.59]    [Pg.131]    [Pg.134]    [Pg.150]    [Pg.150]    [Pg.201]    [Pg.84]    [Pg.280]    [Pg.357]    [Pg.450]    [Pg.464]    [Pg.713]   
See also in sourсe #XX -- [ Pg.337 ]

See also in sourсe #XX -- [ Pg.159 ]

See also in sourсe #XX -- [ Pg.124 ]

See also in sourсe #XX -- [ Pg.142 ]




SEARCH



A Quick Dip into DEPT

A Quick Entry to the Aklavinone Ring System

A Quick Look Ahead to Simple Uses of Mass Spectra

A Quick Look inside the Atom

A Quick Tour of Gaussian Output

A Quick Trip through Some Partition Functions

A Very Quick Look at Organometallic and Inorganic Bonding

Bacteria quick detection methods

Case Study Quick Turnaround Analysis of PAHs by HPLC in Multimedia Samples

Cements quick-setting

Charging quick charge method

Clamps quick release

Consultants quick study

ER Signal Originated from Non-Faradaic Processes - a Quick Overview

Enantioselectivity Quick

Estimate relative volatility quickly

Estimating quick

Facilities quick-drench

Fading quick fade edges

Fastenings, quick-release

Finite-volume scheme QUICK

Get-well-quick plan

Glossary Quick Guide to Agents, Drugs, Equipment, Gear, Programs, and Terminology

HPLC Troubleshooting Quick Reference

How does one obtain a quick estimate of the distance moved by diffusing atoms

INDEX quick response

Individually quick frozen

Inventory quick response

Liabilities quick ratio

Maalox Quick Dissolve

Mold change, quick

NMR, and IR combined make quick identification possible

Operating Procedures quick assessment

Other Uses of Quick and Slaked Lime

Pao Jiang (quick-fried Zingiberis

Phenylephrine Sudafed PE Quick Dissolve [OTC

Polymeric Systems in Quick Dissolving Novel Films

Polymers and Blends for Utilization in Different Quick Dissolving Films

Production strategies for quick response

Profitability quick response

Profits at Quick and Costs to Smart with No Coordination

Provide Quick Energy

QUICK BASIC programming

QUICK BASIC programming language

QUICK scheme

QUICK scheme strong form

QUICK, SUPERBEE

QuEChERS (quick, easy, cheap, effective

Quick (or Rapid) Check Tests

Quick Changeover

Quick Check on Current through Aluminum Capacitors

Quick EXAFS

Quick Freeze Deep Etch

Quick Frozen Foods

Quick Gene Search

Quick Glance

Quick Guide Advanced Lean Tools for Safety

Quick Guide Lean Focused Approach to Safety Management

Quick Guide Roadmap to World-Class Safety

Quick Guide to Chemical Toxicity and Safety

Quick Pep

Quick Quiz

Quick Reference Guides

Quick Reference for Practical Implementation of the Methodology

Quick Response Retailer Impact

Quick Response Service Commitment

Quick Screen Solvents

Quick Test of PMTs

Quick Tour

Quick True Cost

Quick Watch...

Quick assets

Quick breads

Quick change mold system

Quick change system

Quick check test

Quick clay

Quick connector

Quick contact

Quick contact reaction system

Quick contact reactor

Quick estimating checks

Quick fade edges

Quick fix

Quick flow

Quick freezing

Quick guide to cardiac arrhythmias

Quick guides

Quick guides tools

Quick identity test

Quick kinetics

Quick lime

Quick match

Quick material change

Quick opening

Quick opening valve

Quick print

Quick quality control

Quick ratio

Quick reference

Quick reference cards

Quick reference charts

Quick release

Quick release devices

Quick response

Quick response (QR)

Quick response manufacturing

Quick response program

Quick return mechanism

Quick sand

Quick scan

Quick search

Quick set

Quick setting

Quick setting admixtures

Quick shooting

Quick stabilization process

Quick stick

Quick stick test

Quick thermodynamics primer

Quick turnaround analysis

Quick*Risk

Quick, John

Quick-E-Test

Quick-E-Test in the Lipase- or Esterase-Catalyzed Kinetic Resolution of Chiral p-Nitrophenyl Esters

Quick-EXAFS spectroscopy

Quick-Opening (Frame) Fragmentation Bomb

Quick-connect connectors

Quick-connect fitting

Quick-helix drills

Quick-opening closures

Quick-quenching

Quick-release fertilizers

Quick-response logistics

Quick-scanning extended X-ray

Quick-start plan

Quicking

Quickly Screen Solvents for Organic Solids

Quickness

Quickness

Quickness Coefficient of Propellants

Quickness Coefficient of Propellants poudres

Quickness, relative

Quick’s value

Role of Plasticizers in Novel Quick Dissolving Film

Safil Quick

Silver quick

Sprinklers quick response

Storage quick-freezing

Sudafed PE Quick Dissolve

Sudafed PE Quick Dissolve phenylephrine, oral)

The Misuse of Hoses Can Quickly Create Problems

Tukey s quick test

Value, quick opening

Water quick test

Why do dust particles move more quickly by Brownian motion in warm water

X quick

© 2024 chempedia.info