Non Thermal Plasma Plants: Experiences from the Industrial ... · Experiences from the Industrial Praxis of Air Purification. 2 Figure 1: Schematic depiction of the discharging vessel

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Rolf Rafflenbeul

Non Thermal Plasma Plants: Experiences from the Industrial Praxis of

Air Purification

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Figure 1: Schematic depiction of the discharging vessel for cold sparks discharges

Schematic depiction of the discharging vessel

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Design of a discharging vessel

Figure 2: Design of a discharging vessel with comb disk modules made off cordierite (three-ply)

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NTP module

Figure 3: NTP module with glass barriers in operation

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Homogenous discharge at barriers

Figure 4: Homogenous discharge at barriers made off mullit ceramic (surface view)

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Focused discharge in partial barrier sections

Figure 5: Focused discharge in partial barrier sections (surface view)

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Discharge in a plasma module

Figure 6: Discharge in a plasma module with plate barriers (top view)

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Spot discharges

Figure 7: Focused spot discharges on a ceramic barrier material (surface view)

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Degradation of different substances

Figure 8: Degradation of different substances and specific energy demand

Is ooc taneButane

Dodec ane

Ethy lene

NorborneneNitrogen

s y nthetic air

0

20

40

60

80

100

120

140

Energy index

C o m p ar is o n o f V OC -d e g r ad atio n in n itr o g e n an d s yn th e tic air

Is ooc tane

Butane

Dodec ane

Ethy lene

NorborneneNitrogen

s y nthetic air

0

10

20

30

40

50

60

70

80

90

100

relativ degradation [% ]

C o m p ar is o n o f V OC -d e g r ad atio n in n itr o g e n an d s yn th e tic air

none mes s uring

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Hair-pin discharging vessel

Figure 9: Hair-pin discharging vessel with titanium dioxide combs for using catalytic after-reactions

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Efficiency of plasma sources

Figure 10: Efficiency of plasma sources for treating fumes (diesel exhaust air)

D e g rad a tio n in % o f the in le t c o nc e n tra tio n

0

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

1 0 0

0 ,0 2 ,5 5 ,0 7 ,5 1 0 ,0

P o w e r in W /m ³ f um e

Red

uctio

n in

%

N O xS o o tS o o t w ith p ac ke d b e d c a ta lys t c o nne c te d d o w ns tre amN O x w ith p ac ke d b e d c a ta lys t c o nne c te d d o w ns tre am

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Catalytic supported NTP plant for 10,000 m³/h of waste air

Figure 11: Catalytic supported NTP plant for 10,000 m³/h of waste air behind flavouring processes for food

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Results of the degradation of odour behind oil mills

Figure 12: Results of the degradation of odour behind oil mills (without catalyst)

Odor reduc tion behind o il mills(humid ity approx 95% )

540

1070019000

38000

1

10

100

1000

10000

100000

0 10 20 30 40 50

app lication o f ene rgy [W h/g V O C ]

Odo

r con

cent

ratio

n [O

U/m

³]

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Results of the degradation of odour behind fattening food production

Figure 13: Results of the degradation of odour behind fattening food production processes (without catalyst)

Odor reduc tion behind fa ttening food(exhaust a ir temperature 40°C )

0

10

20

30

40

50

60

70

80

0 0,015 0,03

app lication o f ene rgy [W h/1000 O U]

Red

uctio

n [%

]

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Diagram of a NTP plant

Figure 14: Diagram of a NTP plant for odour reduction in factories for producing fatting food and fish meal (very humid emissions)

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Investment- and running costs

Figure 15: Investment- and running cost comparison of waste air purification processes (50,000 m³N/h) for <100 mg VOC/m³ in the flavour processing industry

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Thank you for your attention

Rafflenbeul IngenieureVoltastraße 5 63225 Langen

Tel.: 06103 / 30 09 78Fax: 06103 / 28 06 65

E-Mail: [email protected]