Combustion and Emission LVL 1

Question 1

What is combustion

Answer 1

Chemical process of rapid oxidation of fuel products

Question 2

What three things are needed for combusion

Answer 2

Fuel. oxygen, Heat (Ignition)

Question 3

What are fuels

Answer 3

Hydrocarbons
(Made up of carbon and hydrogen)

Question 4

How do atmospheric burners work

Answer 4

Use kinetic energy from the flow of gas which creates pressure drop making air go into burner via atmospheric pressure

Question 5

How much air is primary air

Answer 5

1/3

Question 6

How much air is secondary air

Answer 6

2/3

Question 7

How much air for perfect combusion

Answer 7

10 ft

Question 8

How much air for excess air

Answer 8

5 ft

Question 9

How much air for dilution air

Answer 9

15 ft

Question 10

Where is a forced draft burner

Answer 10

Fan before the burner

Question 11

Where is an induced draft burner

Answer 11

Fan after the burner

Question 12

Does forced draft need dilution air

Answer 12

No

Question 13

What is tertiary air used for

Answer 13

Controls Nox

Question 14

What is perfect combustion called

Answer 14

Stoichiometric

Question 15

What is the incomplete combustion formula

Answer 15

fuel+02+N2=C02+H20+N2+C0+Aldehydes

Question 16

What percent in combustion is NO

Answer 16

95%

Question 17

When does N02 form

Answer 17

Once is atmosphere

Question 18

What does Nox create when mixed with other pollutants

Answer 18

Ozone and acid rain

Question 19

What is Nox made up with

Answer 19

N01 and N02

Question 20

How is thermal Nox made

Answer 20

Through high temps oxidation of nitrogen in combustion

Question 21

What temperature is Nox created

Answer 21

2200 F

Question 22

Who is SOX created

Answer 22

Combustion of fuels containing sulfer

Question 23

What makes up SOX

Answer 23

SO2 and SO3

Question 24

Is Sox dependant on the size of the burner design of the boiler

Answer 24

NO

Question 25

What percent of sulfer in the fuel will be SOX

Answer 25

95%

Question 26

What ppm must heating oil stay under to avoid creating SOX

Answer 26

500PPM

Question 27

What particulate emissions does wood create

Answer 27

Carbon particulates Soot unburned wood dust PAH semi-volatile organic compounds Ash (metals, dust, minerals)

Question 28

How much less CO2 is created from using natural gas verses Oil and Coal

Answer 28

30% -oil 45%-coal

Question 29

How is CO created

Answer 29

Incomplete combustion Disruptions of air/fuel mixture Failing inducer Gas pressure too high Not enough combustion air

Question 30

What is the explosion limit of CO

Answer 30

12.5% or 125000 PPM

Question 31

Is CO lighter or heavier than air

Answer 31

Slightly Lighter

Question 32

How much CO can be produced when properly set up

Answer 32

Less then 3

Question 33

Max level of CO in air free

Answer 33

400

Question 34

What problems can look like too much excess air but is a CO problem

Answer 34

Leaking site glass Refractory issue Cracked heat exchanger