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WASTE MANAGEMENT IN CHINA Metric Tons of Municipal Solid Waste (MSW) Generated Each Day (2012)

High % of Waste to Landfill vs Low Recycling Rate

0% - 9% 10% - 19% 20% - 29%

0% - 20%

30% - 39%

21% - 40%

40% - 49%

41% - 60% 61% - 80% 81% - 100%

50% - 59% over 60%

Percentage of Waste to Landfill

Recycling Rate

Current vs Projected Municipal Solid Waste Generation (lbs / year) CHINA : 520,538 METRIC TONS PER DAY in 2012

World’s Largest MSW Generators Today

175 MILLION TONS PER YEAR 2015

2025

WHY Waste-to-Energy?

Distribution of Waste to Energy Plants Across China

Environmentally conscious option for coping with waste Elimination of needs to transport waste in long distance - Reduction of travel related emissions Alternative of Landfills

62.4 % landfill

Potential development for hybrid programs with positive impacts towards society

site area (sq. m)

945

building footprint (sq. m)

1,100

waste imput (tonnes / year)

34.3 % Incineration

25,000

electric ourput (households)

4,700 3.3 % other 1000

5000

10000

20000

30000

Estimated Energy Production

190 WTE plants operating, 40 under construction, over 50 planning

34.3% of the MSW is treated by incineration

INCINERATION

FILTERING

TYPICAL CONFIGURATION

WATER & STEAM

HEAT & POWER GENERATION

NEW CONFIGURATION GAS RELEASE

1.

GAS RELEASE

11.5

11.0

4.0 2.0

6.25

4.0

3.0

2.5

2.5

2.5

10

8.0

8.0

INCINERATOR

SUPERHEATER

ECONOMIZER

EMERGENCY DIESEL

Dimensions : 8 m x 8 m x 11.5 m

Dimensions : 4 m x 6.25 m x 4 m

Dimensions : 3 m x 2.5 m x 11 m

Dimensions : 2.5 m x 2.5 m x 2 m

The incinerator is the combustion area where waste is fed and burned. The produced flue gas passes to the boilers while the residue is discharged from the bottom part of the component.

The superheater is a horizontal or vertical component through which tubes of steam are exposed to the high temperatures of the flue gases and heat is transferred to the steam through convection.

The last part of the boiler is the economizer. Here the water is heated before passing to the boiler drum and the evaporator, reaching just below boiling point for those pressure properties.

Emergency diesel generates electricity through burning diesel as the backup power source.

Maintenance : Once a year.

Maintenance : Tubes changed every 5 years

Maintenance : Every 10-15 years

Maintenance : N/A

1.

bunker hall control room

2.

evaporator

incinerator

3.

incinerator

4.

superheater

4.

superheater

5.

economizer

5.

economizer

6.

air cooled condenser

6.

air cooled condenser

7.

steam turbine & generator

7.

steam turbine & generator

8.

baghouse filter

8.

baghouse filter

9.

condensing unit

9.

condensing unit

10.

fan & chimney

10.

fan & chimney

11.

feed water tanks

11.

power transformer

12.

automation

12.

water chiller

13.

emergency diesel

10

8

9

2 5

3.5

1.6

3.6

4.2

9

5.0 1.6 6.0

10.0

3.0

4.6

3.5

6.0

6 AIR-COOLED CONDENSERS

WATER CHILLER

bunker hall

2. 3.

Dimensions : 6 m x 10 m x 3.5 m

Dimensions : 3 m x 6 m x 3.6 m

Dimensions : 3.5 m x 4.6 m x 4.2 m

Dimensions : 1.6 m x 5 m x 1.6 m

The air-cooled condensers are large dry-cooling components that bring the tubes of heated steam through fan-induced cooling air drafts in order to condense it back to water.

The water chiller is the use of water cooling instead of air cooling. In this case the condenser does not cool the hot refrigerant with ambient air, but uses water that is cooled by a cooling tower.

The evaporator vaporizes feed water into steam for further heating through the economizer.

The power transformers are located one step before the power generated in the facility goes to feed the building. It is used to transform electricity in both directions.

Maintenance : Low maintenance needs.

Maintenance : N/A

Maintenance : N/A

Maintenance : N/A

4

5

POWER TRANSFORMER

EVAPORATOR

6

8 4

12

11 3 3

7

11

12 1

7 ELECTRICITY OUTPUT

22.0 9.0 9.0 4.0

10.0

1

4.0 3.0

3.0

ELECTRICITY OUTPUT

8.0

7.0

5.0

Design Concept

BAGHOUSE FILTER

104

5.0

CONDENSING UNIT FAN & CHIMNEY

STEAM TURBINE GENERATOR

Dimensions : 7 m x 8 m x 9 m

Dimensions : 3 m x 3 m x 9 m

Dimensions : 5 m x 5 m x 22 m

Dimensions : 4 m x 10 m x 4 m

The baghouse filter is comprised of metal cages covered by fabric filters that capture fly ash particles. The flue gas passes from the outside of the fabric bags to the inside, leaving behind all ash particles, which are periodically cleaned by compressed air flowing in the opposite direction.

The condensing unit is another scrubber unit that is used to further cool the flue gases when the plant connects to district heating. Condensing steam to water improves the eďŹƒciency of the heat production.

The final step before releasing the clean flue gases to the atmosphere is the induced draft fan, that creates a boosting draft, and the chimney.

The steam turbine generator receives steam from superheaters and sends it to condensers.

Maintenance : Every 5 years.

Maintenance : N/A

Maintenance : Low maintenance needs.

Maintenance : Low maintenance needs

BOTTOM ASH

BOTTOM ASH

2

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Xiong’an 1.0  

Xiong’an 1.0 is year-long research and design studio catalog that features the work of MS in Architecture students from Fall 2017 and Underg...

Xiong’an 1.0  

Xiong’an 1.0 is year-long research and design studio catalog that features the work of MS in Architecture students from Fall 2017 and Underg...

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