LQ3 Industrial Gases

Question 1

aregaseousmaterials specificallyproducedfor
use in various industries. These gases, which can be elements, molecular
compounds, or mixtures, are typically low in molecular weight and
possess distinct chemical properties, making them useful across a wide
rangeof applications.

Answer 1

Industrial Gases

Question 2

Common industrial gases include ______. These gases are utilized in
sectors such manufacturing,healthcare,foodandbeverage and others

Answer 2

nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium and acetylene

Question 3

1754

Answer 3

Carbon dioxide

Question 5

1766

Answer 5

Hydrogen

Question 6

1886

Answer 6

Fluorine

Question 7

1772

Answer 7

Nitrogen

Question 8

1808

Answer 8

Boron

Question 9

1777

Answer 9

Phosphorus

Question 10

1774

Answer 10

Chlorine

Question 11

1777

Answer 11

Sulfur

Question 12

Scottish chemist who discovered Nitrogen gas
in 1772

Answer 12

Daniel Rutherford (1748-1819)

Question 13

Removed oxygen and Carbon dioxide from air,
leaving behind a gas that could not support
life or combustion, calling it

Answer 13

Noxious Air

Question 14

Daniel Rutherford discovery led to major advancements, Fritz
Haber (1918) won for the ____
which synthesizes ammonia from nitrogen

Answer 14

Haber process

Question 15

for industrializing it,
revolutionizing agriculture.

Answer 15

Carl Bosch

Question 16

was an English theologian,
chemist and natural philosopher.

Answer 16

Joseph Priestly

Question 17

In 1774, he isolated a gas by heating
mercuric oxide (HgO) by collecting the gas
in an inverted glass container and later correctly identified it as
oxygen.

Answer 17

Antoine Lavoisier

Question 18

a Swedish German pharmaceutical chemist known for discovering
multiple elements

Answer 18

Carl Wilhelm Scheele

Question 19

Around 1772, before Priestley, _______ also discovered oxygen by heating potassium nitrate,
manganese dioxide, and mercuric oxide. However, his work was published after Priestley’s so
it was often credited first.

Answer 19

Scheele

Question 20

The rapid pace of ______ the demand for these gases in key industries. Among them, oxygen stands out due to its diverse applications, especially in healthcare,
where patient care and respiratory treatments are prioritized.

Answer 20

urbanization and industrialization has increased

Question 21

Oxygen and nitrogen are primarily obtained through ______.

Answer 21

cryogenic distillation of airand Pressure Swing Adsorption (PSA)

Question 22

Hydrogen is commonly produced through steam methane reforming, while carbon dioxide is often captured as a

Answer 22

byproduct of industrial processes.

Question 23

The gas industry in the Philippines can be characterized as _____ with major development and market contributors.

Answer 23

Emerging

Question 24

What are the raw materials of Industrial gases

Answer 24

Natural gas, petroleum, coal, air, water

Question 25

Used for the bulk separation of gas mixtures like hydrogen and
oxygen

Answer 25

Pressure swing Adsorption (PSA)

Question 26

Relies on the adsorption of gas molecules to the surface of the adsorbent. Molecular sieves are often used for the production of nitrogen, while zeolite is used for the production of oxygen.

Answer 26

Pressure swing Adsorption (PSA)

Question 27

Produces oxygen gas at around 95% purity and 20-100 tons/day

Answer 27

Pressure swing adsorption

Question 28

What are the four operations?

Answer 28

Adsorption, depressurization, regeneration, repressurization

Question 29

The separation of different molecules is based on the different physical binding forces. The sieve/adsorbent collect impurities within the gas, while highly volatile and low polarity moleculesare able to diffuse and pass through.

Answer 29

Adsorption

Question 30

facilitated at high pressure until the adsorption bed is at full capacity.

Answer 30

Adsorption

Question 31

Pressure is lowered to slightly above atmospheric pressure, causing impurities to be desorbed and exit the system.

Answer 31

Depressurization

Question 32

The adsorbent material regenerates.

Answer 32

Regeneration

Question 33

Pressure increases again so that the adsorption- depressurization cycle may start again.

Answer 33

Repressurization

Question 34

A separate, and opposite adsorption-depressurization cycle may take place in parallel unit/s (i.e., while while one PSA unit is regenerating, adsorption is taking place in another).

Answer 34

Repressurization

Question 35

Molecular sieves selectively adsorb, concentrating oxygen as the product. Adsorbed nitrogen is vented during regeneration. Oxygen concentration increases with longer adsorption cycles, but short cycles limit nitrogen adsorption

Answer 35

Adsorption cycle

Question 36

Pressure equalization reuses high-pressure air for secondary adsorption in another tower, improving oxygen yield and concentration. Oxygen concentration is sensitive to equalization timing, particularly with non-optimal adsorption cycles

Answer 36

Pressure equalization

Question 37

Low outlet flow reduces oxygen concentration because concentrated oxygen isn't removed quickly enough. This lowers the molecular sieve's adsorption capacity, and nitrogen buildup decreases oxygen purity.

Answer 37

Outlet flowrate on oxygen concentration

Question 38

With a sudden drop of pressure with a range of 100 - 10 kPa, it _____ active sites of the adsorbent since it can easily break the weak bond formed between the adsorbent and adsorbed molecules.

Answer 38

Releases

Question 39

At a high pressure of around 200 kPa - 4000 kPa, more molecules or atoms are _____ and held onto the surface of the adsorbent material, showing preference in the adsorption process

Answer 39

Captured

Question 40

PSA operates at near-ambient temperatures of _______. Higher temperatures, with a range of 200°C - 450°C, allow the adsorbent to reach its maximum adsorption capacity faster, but at the cost of negatively impacting the final equilibrium

Answer 40

50-60 degree celsius

Question 41

WHICH ONEOF THESE INDUSTRIALGASES WAS FIRSTDISCOVERED?A. Argon B. Oxygen C. Chlorine D. Carbon Dioxide

Answer 41

Carbon dioxide

Question 42

WHICH ISAFACTORDRIVINGDEMAND?A. Aerospace Expansion B. Energy Sector Development C. Cryogenic Sports Application D. Automated Farming Techniques

Answer 42

Energy Sector Development

Question 43

WHICH ONE ISAUNITOPERATION? A. Air compressor B. Pre-filters, oil filters, and after filters C. PSA Systems D. Wet and dry air receivers

Answer 43

All of them

Question 44

WHAT IS THE MOST COMMON METHODFOR PRODUCINGINDUSTRIALGAS?A. Pleasure Swing Absorption (PSA) B. Pressure Sonic Adsorption (PSA) C. Pressure Swing Adsorption (PSA) D. Pressure Shift Absorption (PSA)

Answer 44

Pressure swing adsorption

Question 45

Who discovered nitrogen gas?

Answer 45

Daniel Rutherford

Question 46

1773

Answer 46

Oxygen