Ch 14-17 Test

Question 1

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

Answer 1

Shell and tube heat exchanger and a chemical reactor

Question 2

What is the purpose of the furnace

Answer 2

To heat up a process

Question 3

What is combustion

Answer 3

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

Furnaces and boilers

Question 4

What is incarceration

Answer 4

The burning of material with the intent to destroy the material

Incarcerators and flayers

Question 5

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

Answer 5

Heat value and BTU

Question 6

Complete combustion

Answer 6

Only CO2 and H2O remain

Question 7

Incomplete combustion

Answer 7

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

Question 8

Combustion mode:

Answer 8

minimum excess 02 heated, wasting some energy

Question 9

Lead////lag

Answer 9

Lead with oxygen lag with fuel

Question 10

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

Answer 10

Box heater

Question 11

Similar to box heater

Answer 11

Cabin heater

Question 12

Almost always bottom fired

Answer 12

Vertical cylinder heater

Question 13

Special breaks called firebreak or special material is called what

Answer 13

Refractory

Question 14

Ernest tubes that are supported on the walls

Answer 14

Radiant section

Question 15

Furnace tubes that are supported on the roof

Answer 15

Convection section

Question 16

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

Answer 16

Flame impingement

Question 17

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

Answer 17

Creep or sagging

Question 18

Difference in density between outside air in firebox air create what

Answer 18

A natural draft movement

Question 19

If he and pushes air into burners this is called what

Answer 19

Forced draft

Question 20

Fan below stack pools air into firebox and out of stack

Answer 20

Induced draft

Question 21

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

Answer 21

Balanced draft

Question 22

Before starting up a furnace you have to do what

Answer 22

Purge it

Question 23

Extraction is what

Answer 23

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

Question 24

Solution

Answer 24

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.

Question 25

Solute

Answer 25

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

Question 26

Solvent

Answer 26

Chemical that will dissolve into another material

Question 27

Extract

Answer 27

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

Question 28

Raffinate

Answer 28

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

Question 29

What is the most common extraction system used

Answer 29

Liquid-liquid extraction

Question 30

What are two types of extraction process it's

Answer 30

Watch extraction and continuous extraction

Question 31

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

Answer 31

Batch extraction

Question 32

Concurrent flow Mixed flow

Answer 32

Flows in the same direction Mixed flows allow the substance to layer out and be removed

Question 33

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

Answer 33

Continuous extraction

Question 34

What are the two types of columns

Answer 34

Packed columns Trayed columns.

Question 35

Simplest and most commonly used

Answer 35

Pack columns. Hallow shell filled with packing

Question 36

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

Answer 36

Trayed columns

Question 37

An emulsion is what

Answer 37

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

Question 38

Saturation

Answer 38

Extract mixture contains the Maximum amount of solute

Question 39

Interfaces

Answer 39

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

Question 40

Solvent to feed ratio

Answer 40

The amount of solvent in relation to the feed rate

Question 41

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

Answer 41

Absorption

Question 42

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

Answer 42

Adsorption

Question 43

What are for commonly used adsorbents

Answer 43

Desiccants, silica gel, activated alumina, activated carbon

Question 44

Cation

Answer 44

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

Question 45

Anion

Answer 45

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

Question 46

Adsorbents have to be what

Answer 46

Regenerated

Question 47

Absorption, stripping and extraction are all what

Answer 47

Mass transfer operations

Question 48

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

Answer 48

Absorption

Question 49

Stripping is called what

Answer 49

Getting it out