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Process Tech 3 > Ch 14-17 Test > Flashcards

Ch 14-17 Test Flashcards

1
Q

And furnace is made up of two pieces of equipment what are they called

A

Shell and tube heat exchanger and a chemical reactor

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2
Q

What is the purpose of the furnace

A

To heat up a process

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3
Q

What is combustion

A

The burning of carbon-based fuels under controlled conditions to generate key in order to do useful work

Furnaces and boilers

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4
Q

What is incarceration

A

The burning of material with the intent to destroy the material

Incarcerators and flayers

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5
Q

Heat released by combustion is called what and what is it measured in

A

Heat value and BTU

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6
Q

Complete combustion

A

Only CO2 and H2O remain

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7
Q

Incomplete combustion

A

Unburned fuel, CO2, and CEO and H2O remain. There is not enough oxygen

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8
Q

Combustion mode:

A

minimum excess 02 heated, wasting some energy

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9
Q

Lead////lag

A

Lead with oxygen lag with fuel

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10
Q

Typically bottom fired round flame burners in a single or double row is called what

A

Box heater

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11
Q

Similar to box heater

A

Cabin heater

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12
Q

Almost always bottom fired

A

Vertical cylinder heater

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13
Q

Special breaks called firebreak or special material is called what

A

Refractory

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14
Q

Ernest tubes that are supported on the walls

A

Radiant section

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15
Q

Furnace tubes that are supported on the roof

A

Convection section

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16
Q

What is it called when the burner flame touches the tubes or walls of the furnace

A

Flame impingement

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17
Q

When he causes metal to start failing and stretch this is the main cause of failure

A

Creep or sagging

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18
Q

Difference in density between outside air in firebox air create what

A

A natural draft movement

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19
Q

If he and pushes air into burners this is called what

A

Forced draft

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20
Q

Fan below stack pools air into firebox and out of stack

A

Induced draft

21
Q

One fan induces flow out of the stack and one forces air into burners

A

Balanced draft

22
Q

Before starting up a furnace you have to do what

A

Purge it

23
Q

Extraction is what

A

The separation of two materials by contacting them with a third substance that will dissolve one of the substances but not the other

24
Q

Solution

A

The feed a uniform mixture of molecular sized compounds. Particles in a solution are not chemically bonded and can be separated purely by physical changes.

25
Q

Solute

A

Material that is dissolved into another material. The material to be dissolved in the solution and removed by extraction

26
Q

Solvent

A

Chemical that will dissolve into another material

27
Q

Extract

A

The new solution formed when he saw that dissolves the solute in now contains it

28
Q

Raffinate

A

The feed solution minus the extracted solute. This is the product that had the other substance dissolved out and removed

29
Q

What is the most common extraction system used

A

Liquid-liquid extraction

30
Q

What are two types of extraction process it’s

A

Watch extraction and continuous extraction

31
Q

The simplest extraction in a single stage batch unit. Does not provide perfect separation.

A

Batch extraction

32
Q

Concurrent flow

Mixed flow

A

Flows in the same direction

Mixed flows allow the substance to layer out and be removed

33
Q

Feed insolvent are continuously at it while the raffinate and extract are continuously withdrawn

A

Continuous extraction

34
Q

What are the two types of columns

A

Packed columns

Trayed columns.

35
Q

Simplest and most commonly used

A

Pack columns. Hallow shell filled with packing

36
Q

Bubble cap, sieve tray, baffle tray are examples of what

A

Trayed columns

37
Q

An emulsion is what

A

Two chemicals that are different, that will not dissolve in each other, and will not to layer out

38
Q

Saturation

A

Extract mixture contains the Maximum amount of solute

39
Q

Interfaces

A

Must be established in the column to separate the extract and raffinate phases

40
Q

Solvent to feed ratio

A

The amount of solvent in relation to the feed rate

41
Q

The process or action by which one thing absorbs or is absorbed by another

A

Absorption

42
Q

The process by which molecules of a substance collect on the surface of another substance. The molecules are attracted to the surface but do not enter the solids my new spaces as an absorption

A

Adsorption

43
Q

What are for commonly used adsorbents

A

Desiccants, silica gel, activated alumina, activated carbon

44
Q

Cation

A

If the molecule has lost an electron and it is positively charged

45
Q

Anion

A

If the molecule has gained an electron and it is negatively charged

46
Q

Adsorbents have to be what

A

Regenerated

47
Q

Absorption, stripping and extraction are all what

A

Mass transfer operations

48
Q

The chemical process in which one substance penetrate and is drawn into the bow of another substance

A

Absorption

49
Q

Stripping is called what

A

Getting it out

Process Tech 3 (3 decks)

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