04/06/2010

Production of Dimethyl Sulfoxide from Lignin

Team Bravo is:

Stan Das, Jeff Umbach, Russ Boyer, Krista Sutton, Mike Czepizak

Project Lead: Jake Biberstein

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Project Outline

Design Basis Block Flow Diagram Constraints Review Material and Energy

Balances Applicable Standards Annotated Equipment List Distribution and End Use Utilities

Conceptual Control Scheme

General Arrangement Economic Evaluation Process Flow Diagram Calculations Project Communications

File Information Sources and

References

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Presentation Outline

PFD Initial Control Scheme General Plant Layout Hand Calculations and Material Balances Economic Evaluation

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Block Flow Diagram

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PFD: Lignin Reaction

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Block Flow Diagram

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PFD: NO2 Creation/Regeneration

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Block Flow Diagram

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PFD: DMS Oxidation

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General Plant Layout

Plant is to be adjacent to paper mill to obtain a cheaper source of black liquor

Plant Dimensions

250 x 185(285) x 40

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Calculations: Lignin Reactor

Mass In (lbs/hr)

Mass Waste Stream (lbs/hr)

Mass Reactor Product (lbs/hr)

Black Liquor

80200 79100 0

NaOH 17 17 0

Sulfur 1230 0 0

Water 45280 43200 2080

Tall Oil 12 12 0

DimethylSulfide

0 0 2330

Total 126739 122329 4410Reactor Size

Diameter = 7 ft

Height = 20 ft

Volume = 5700 gallons

Heat Duty = 830,000 BTU/hr

Total Cost of Unit

= $1,340,000

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Calculations: Distillation Column Mass Feed

(lbs/hr)Mass

Impurities (lbs/hr)

Mass Bottom Product (lbs/hr)

Dimethyl Sulfide

66.2 66.2 TRACE

Water 1.55 1.47 .08

Other Impurities

15.1 15.1 TRACE

DMSO 2240 36.0 2204

Total 2322.85 118.77 2204.08Column Size

Number of Trays = 9

Diameter = 1.5 ft

Height = 30 ft

Volume = 400 gallons

Reboiler Heat Duty = 420,000 BTU/hr

Condenser Heat Duty = -47,000 BTU/hr

Total Cost of Unit

= $410,000

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General Economic Evaluation

Capital Costs $22,500,000

Utilities $642,000/year

Raw Materials $14,900,000/year

Labor and Maintenance $1,900,000/year

Other Costs $3,440,000/year

Total Operating Costs $20,800,000/year

Total Product Sales $30,400,000/year

Profit per Year $9,550,000/year

Payback Period (x) 2 > x > 3 Years

Total Profit by Year

-4.00E+07

-2.00E+07

0.00E+00

2.00E+07

4.00E+07

6.00E+07

8.00E+07

1.00E+08

1.20E+08

0 1 2 3 4 5 6 7 8 9 10

Year

To

tal P

rofi

t A

ccu

mu

late

d

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Summary

Block flow and process flow diagrams are nearly finalized.

Basic control schemes have been added to the process flow diagrams.

Our payback period is between 2 to 3 years. We have drafted the general arrangement of

our DMSO plant. Further details and higher-detail drawings are

available on our Wiki. http://che397-teambravo.wikispaces.com/

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Future Goals

Pinch analysis and heat integration. Utility optimization. Waste processing. Pumps and compressor adjustments. More detailed control scheme. P&ID Applicable standards, environmental

regulations, OSHA requirements.

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Questions?

For more information, please visit our Wiki! http://che397-teambravo.wikispaces.com/