Transportation fuel production from gasified biomass integrated with a pulp and paper mill – Part A : Heat integration and system performance

• Production of transportation fuels from biorefineries via biomass gasification has been suggested as a way of introducing renewable alternatives in the transportation system with an aim to reduce greenhouse gas emissions to the atmosphere. By co-locating gasification-based processes within heat demanding industries, excess heat from the gasification process can replace fossil or renewable fuels. The objective of this study was to compare the heat integration potential of four different gasification-based biorefinery concepts with a chemical pulp and paper mill. The results showed that the choice of end-product which was either methanol, Fischer-Tropsch crude, synthetic natural gas or electricity, can have significant impact on the heat integration potential with a pulp and paper mill and that the heat saving measures implemented in the mill in connection to integration of a gasification process can increase the biomass resource efficiency by up to 3%-points. Heat saving measures can reduce the necessary biomass input to the biorefinery by 50% if the sizing constraint is to replace the bark boiler with excess heat from the biorefinery. A large integrated gasification process with excess steam utilisation in a condensing turbine was beneficial only if grid electricity is produced at below 30% electrical efficiency. 

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Naturresursteknik -- Energisystem (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Environmental Engineering -- Energy Systems (hsv//eng)

Nyckelord

Biomass

Biomass gasification

Energy efficiency

Heat integration

Pinch analysis

Pulp and paper mill

Bioconversion

Chemical pulp

Fuels

Gas emissions

Gasification

Greenhouse gases

Integration

Natural gas deposits

Paper

Paper and pulp mills

Papermaking machinery

Pulp manufacture

Refining

Electrical efficiency

Gasification process

Synthetic natural gas

Transportation system

chemical alteration

efficiency measurement

fuel

greenhouse gas

heat transfer

pulp and paper industry

refining industry

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)