PYROLYSIS REACTORS

Types of pyrolysis reactors and the methods of heating employed are shown in Table 4.2. Configurations are basically similar to those employed in gasification although a wider range of unusual combinations and configurations have been devised. Key features of pyrolysis processes are the method of heating which was described and discussed in Chapter 3.

Table 4.1 Status of Pyrolysis Liquids Production Processes, 1995

Oraanisation

Country

Technoloav

Products

ka/h

Status

BBC/Castle Capital

Canada

Ablative

Fuel, Chemicals

2000

Operational

Interchem

USA

Ablative

Fuel, Chemicals

1360

Dormant

Ensyn Engineering

Canada

T ransport

Fuel, Chemicals

1050

Operational

U. Fenosa/Waterioo

Spain

Fluid bed

Fuel

160

Operational

Egemin

Belgium

Entrained flow

Fuel

200

Shut down

Ensyn Engineering

Canada

Transport

Fuel, Chemicals

150

Operational

Ensyn Engineering

Canada

Transport

Fuel

80

Construction

GTRI

USA

Entrained flow

Fuel

50

Dormant

Bio-Alternative SA

Switzerland

Fixed bed

Fuel

50

Unknown

Laval University

Canada

Vacuum

Fuel, Chemicals

50

Operational

Schelde

Netherlands

Rotating cone

Fuel

50

Construction

WTC

Canada

Augur kiln

Fuel, Chemicals

42

Operational

NREL

USA

Ablative vortex

Fuel, Chemicals

36

Operational

CRES

Greece

Circulating bed

Fuel

10

Operational

Ensyn Engineering

Canada

Transport

Fuel

10

Construction

Tubingen University

Germany

Augur kiln

Fuel, Chemicals

10

Operational

Twente University

Netherlands

Ablative

Fuel

10

Operational

INET!

Portugal

Fluid bed

Fuel

5

Shut down

Waterloo University

Canada

Fluid bed

Fuel, Chemicals

3

Operational

Aston University

UK

Ablative

Fuel, Chemicals

3

Operational

University of Sassari

Italy

Fluid bed

Fuel

2

Operational

Leeds University

UK

Fluid bed

Fuel, Chemicals

2

Operational

Aston University

UK

Fluid bed

Fuel, Chemicals

1

Operational

CPERi

Greece

Fluid bed

Fuel, Chemicals

< 1

Operational

Colorado School M.

USA

Ablative mill

Fuel

<1

Dismantled

Inst, of Wood Chemistry Germany

Fluid bed

Fuel, Chemicals

< 1

Operational

Table 4.2 Pyrolysis Reactors, Heating Methods and Heating Rates

Reactor tvpe

Method of Heatina

Organisation

Ablative cone

Wall heating

U. Twente

Ablative mill

Wall (disc) heating

CSM

Ablative plate

Wall heating

U. Aston, U. Nancy

Ablative vortex

Wall heating

NREL, Interchem

Auger kiln

Wall heating

U. Tubingen, WTC

Circulating fluid bed

Partial gasification

CRES

Cyclone or vortex

Wall heating

See Ablative vortex

Entrained flow

Combustion products

Egemin, GTRI

Fixed bed

Combustion products

Bio-Alternative

Partial gasification

Alten §

Fluid bed

Heated recycle gas

CPERI, INET1, NREL, Union Fenosa

U. Aston, U. Leeds, U. Sassari, U. Waterloo,

Partial gasification

Alten §

Fire tubes

МТСІЦ

Horizontal bed

Fire tubes

Pyrosol АЕГ, Wastech*

Multiple hearth

Hearth heating

U. Laval

Rotary kiln

Wall heating

Babcock*, KWU*, PKA*, Stenau*

Rotating cone

Wall and recycled sand

Schelde + U. Twente

Stirred bed

Partial gasification

Alten §

Transport

Hot sand

Ensyn

NOTES: * Solid waste processing, not liquids production;

Ц Gas production

The organisations currently involved in fast pyrolysis for production of primary liquids are listed alphabetically in Table 4.3 with an indication of the maximum capacity achieved to date. Each is summarised in the sections below. Figure 4.1 shows how the maximum size of installed plant has grown steadily since pyrolysis was discovered around 1979, and forecasts major plant installations by 2000.

Oraanisation

Process

Country

Hiahestcaoacitv drv ka/h feed achieved

BBC

BBC

Canada

2000

Castle Capital

BBC

Canada

2000

CPERI

CPERI

Greece

1

CRES

AUA/CRES

Greece

8

Ensyn

Ensyn

Canada

1050

NREL

NREL

USA

35

Red Arrow

Ensyn

USA

1050

Schelde

U. Twente

Netherlands

10

Stenau

U. Tubingen

Germany

1000

Union Fenosa

U. Waterloo

Spain

160

University of Aston

U. Aston

UK

3

University of Athens, Agricultural

CRES/AUA

Greece

8

University of Laval

U. Laval

Canada

50

University of Leeds

U. Leeds

UK

2

University of Tubingen

U. Tubingen

Germany

10

University of Twente

U. Twente

Netherlands

10

University of Waterloo

U. Waterloo

Canada

3

Wastewater Technology Centre

U. Tubingen

Canada

42

Worthing Industries

Worthing

Canada

200

Table 4.3 Organisations Currently Involved with Fast Pyrolysis for Liquids (as at January 1995)

Подпись: Figure 4.1 Growth in Size of Fast Pyrolysis Plants

1980 1985 1990 1995 2000

Date