+86-21-5838625

Biology Dictionary - Explanations and Examples of ...

Biology Dictionary. Biology is the study of living things. It is broken down into many fields, reflecting the complexity of life from the atoms and molecules of biochemistry to the interactions of millions of organisms in ecology.

Chat With Sales

Crude Oil Distillation - Inside Mines

Feed Preheat Train & Desalter Feed Preheat Train Initial heat exchange with streams from within the tower •Heat recovery important to distillation economics! o First absorb part of the overhead condensation load o Exchange with one or more of the liquid sides streams, beginning with the top (coldest) side

Chat With Sales

Overview of Crude Units - The University of Oklahoma

desalter. The desalted crude enters another heat exchanger network. Both heat exchanger networks make use of the vapors of the main column condenser, the pump-around circuit streams (PA1, PA2 and PA3), and the products that need to be cooled. Then, the preheated crude enters the furnace, where it is heated to about 340-372 oC (644-700 oF).

Chat With Sales

Minerals - Weir Group

AH® pump, and is designed to enhance efficiency and improve wear performance. Heavy duty pumping applications The heavy duty AH® pump range is designed to perform continuous pumping of highly abrasive/ dense slurries in processes from hydrocyclone feed to regrind, flotation and tailings in minerals processing plants as well as other industrial

Chat With Sales

Lecture 3: Petroleum Refining Overview - nptel.ac.in

Lecture 3: Petroleum Refining Overview In this lecture, we present a brief overview of the petroleum refining, a prominent process technology in process engineering. 3.1 Crude oil Crude oil is a multicomponent mixture consisting of more than 108 compounds. Petroleum refining refers to the separation as well as reactive

Chat With Sales

Home | Oil & Gas Journal

Drilling by Turkey off Cyprus elicits rebuke from Russia. Bob Tippee. Jul 18th, 2019. Editor's Perspective. US-Iranian tension revives worry about Strait of Hormuz. Bob Tippee. Jul 8th, 2019.

Chat With Sales

Optimizing desalter operations can help refiners cope with ...

Home; Optimizing desalter operations can help refiners cope with heavy crudes. Refiners exchanged ideas on how to alter desalter operations to handle heavier crude oils at the 1996 National ...

Chat With Sales

Crude overhead system design considerations - revamps.com

and desalter operation. Desalter operation is an integral part of overhead system corrosion and the two cannot be separated. Calcium and magnesium chloride salts hydrolyse in the atmospheric heater, creating HCl. When processing difficult-to-desalt crudes such as Venezuelan extra-heavy, diluted bitumen blends and conventional

Chat With Sales

Oil and gas production handbook ed2x1 - saudienergy.net

well equipped with a sucker rod pump (donkey pump) often associated with onshore oil production. However, as we shall see later, there are many other ways of extracting oil from a non-free flowing well For the smallest reservoirs, oil is simply collected in a holding tank and

Chat With Sales

Low shear pumps - PetroWiki

Operate the pump with a low specific speed (Ns<700). Morales et. al. in their experimental study of centrifugal pumps, measured the effect of different parameters on droplet-size distribution. Results showed that pump speed has the strongest effect: the higher the speed, the smaller the droplet size.

Chat With Sales

Hydroprocessing: Hydrotreating& Hydrocracking

Hydrocracking Crystalline silica alumina base with rare earth metals deposited in the lattice •Platinum, palladium, tungsten, and/or nickel •Rare earth metals typically mixture of lanthanum, cerium, and other minor quantities •Acid function promotes the cracking Feed stock must first be hydrotreated

Chat With Sales

Håvard Devold Oil and gas production handbook An ...

b PREFACE This handbook has been compiled for readers with an interest in the oil and gas industry. It is an overview of the main processes and equipment.

Chat With Sales

Lecture 3 Crude Oil Distillation - NPTEL

Lecture 3 Crude Oil Distillation . 201 ... Operating Variables in Desalter: Some of the variables in the desalter operation are crude charge rate, temperature, pressure, mixing valve pressure drop and wash water rate, temperature, ... corrosion inhibitor, use of demulsifier, addition of trisodium phosphate in boiler feed …

Chat With Sales

What is a header? - Pipelines, Piping and Fluid Mechanics ...

Jun 10, 2004· A pump station with three pumps might have a common intake "header", with 3 smaller lines feeding fluid to each of the three pumps. ... The term 'header' can mean a number of things depending in what context you use it. ... then you could install a 1" pipe to feed the first basin, reducing down to 3/4" to the next basin and so on. This is messy ...

Chat With Sales

Sour water strippers: design and operation

To heat the feed from 90°F (32°C) to 250°F (120°C) requires about 16 wt% steam flow, or about 1.3-1.4lb of steam per gallon of stripper bottoms, which is close to a typical design stripping steam ratio for sour water strippers. The E-1 feed preheater, reflux pump (P-2) and the reflux cooler (E-2) shown in Figure 2 are all eliminated.

Chat With Sales

Crude Distillation Unit (CDU) | Inspectioneering

In petroleum refining, the Crude Distillation Unit (CDU) (often referred to as the Atmospheric Distillation Unit) is usually the first processing equipment through which crude oil is fed. Once in the CDU, crude oil is distilled into various products, like naphtha, kerosene, and diesel, that then serve as feedstocks for all other processing units at the refinery.

Chat With Sales

Desalting of crude oil in refinery - EnggCyclopedia

Purpose of crude oil desalting. Crude oil introduced to refinery processing contains many undesirable impurities, such as sand, inorganic salts, drilling mud, polymer, corrosion byproduct, etc. The purpose of crude oil desalting is to remove these undesirable impurities, especially salts and water, from the crude oil prior to distillation.. The salt content in the crude oil varies depending on ...

Chat With Sales

Crude oil desalter - encyclopedia article - Citizendium

Home; Optimizing desalter operations can help refiners cope with heavy crudes. Refiners exchanged ideas on how to alter desalter operations to handle heavier crude oils at the 1996 National ...

Chat With Sales

New tab - msn.com

Hide my news feed. Hide top sites. Select language & content Save Cancel Reset to default settings. Show top ...

Chat With Sales

Bobbing its head? | Tortoise Forum

Apr 20, 2012· My Russian tortoise seems to always be bobbing it head. It almost looks like it has hiccups? ... Turtles also pump their arms or legs for the same reason: to move air, since their rib cage has evolved into a fixed shell. Some turtles, like box turtles and hingeback tortoises, do have a movable shell, and you can watch it move when they breathe ...

Chat With Sales

Yahoo

Jul 23, 2019· News, email and search are just the beginning. Discover more every day. Find your yodel.

Chat With Sales

FILTER | meaning in the Cambridge English Dictionary

filter definition: 1. any of several types of equipment or devices for removing solids from liquids or gases, or for removing particular types of light: 2. a thin piece of plastic or glass placed in front of a camera lens in order to change the colour or amount of light entering it: 3. a tool…. Learn more.

Chat With Sales

Reverso Context | Translation in context from English to ...

Get relevant English-Russian translations in context with real-life examples for millions of words and expressions, using our natural language search engine applied on bilingual big data. English-Russian translation search engine, English words and expressions translated into Russian with examples of use in both languages.

Chat With Sales

Types of Water Pumps for Construction - thebalancesmb.com

Jun 25, 2019· A centrifugal water pump uses a rotating impeller to move water into the pump and pressurize the discharge flow. Centrifugal water pumps come in several different types, including standard, trash, and submersible models. All liquids can be pumped using centrifugal water pumps, even those with low viscosity.

Chat With Sales

How does a Centrifugal pump work ? - YouTube

Dec 07, 2013· Centrifugal pumps are the most preferred home water pumps. Depending upon the fluid viscosity different impeller types such as open, semi-open …

Chat With Sales

We have field small refinery to produce diesel ~10000 BFD ...

Operate the desalter at optimum range i.e. outlet salt content should remain in range of 1-1.5 ptb. If desalter is working fine then this is a problem of excessive organic chloride coming with the feed stock & dosage of caustic at downstream of the desalter can be carried out.

Chat With Sales

What is meant by a 'dead head' in regards to pumps? - Quora

Jan 27, 2017· Dead head: a situation that occurs when the pump's discharge is closed either due to a blockage in the line or an inadvertently closed valve. At this point, the pump will go to it's maximum shut-off head, the fluid will be recirculated within the ...

Chat With Sales

What is Pump Cavitation? - Crane Engineering

Jul 10, 2014· Pump cavitation can cause a number of issues for your pumping system, including excess noise, and energy usage, not to mention serious damage to the pump itself. What is pump cavitation? Simply defined, cavitation is the formation of bubbles or cavities in liquid, developed in areas of relatively low pressure around an impeller. The imploding ...

Chat With Sales

Progressive cavity pump - Wikipedia

A progressive cavity pump is a type of positive displacement pump and is also known as a progressing cavity pump, progg cavity pump, eccentric screw pump or cavity pump. It transfers fluid by means of the progress, through the pump, of a sequence of small, fixed shape, discrete cavities, as its rotor is turned.

Chat With Sales

Desalter - Wikipedia

A desalter is a process unit in an oil refinery that removes salt from the crude oil. The salt is dissolved in the water in the crude oil, not in the crude oil itself. The desalting is usually the first process in crude oil refining. The salt content after the desalter is usually measured in PTB - pounds of salt per thousand barrels of crude oil.

Chat With Sales