H2A Case Study: Future Central Coal without Sequestration

Project Summary

Full Title:	H2A Case Study: Longer-Term (2020-2030) Hydrogen from Coal without CO2 Capture and Sequestration
Project ID:	238
Principal Investigator:	Mike Rutkowski
Keywords:	Hydrogen production; coal; gasification

Purpose

The objective of this task was to prepare capital and operating cost data to be used to arrive at a plant gate cost for hydrogen produced from coal gasification. Hydrogen cost was determined by first preparing a plant design for hydrogen production, based on longer-term process technology. This plant does not capture CO2.

Performer

Principal Investigator:	Mike Rutkowski
Organization:	National Renewable Energy Laboratory (NREL)
Address:	1617 Cole Blvd. Golden, CO 80401-3393

Contact (If Other Than PI)

Name:	Darlene Steward
Address:	1617 Cole Blvd. Golden, CO
Telephone:	303-275-3837
Email:	Darlene_Steward@nrel.gov

Sponsor(s)

Name:	Fred Joseck
Organization:	DOE/EERE/HFCIT
Telephone:	202-586-7932
Email:	Fred.Joseck@ee.doe.gov

Period of Performance

Start:	October 2004
End:	May 2008

Project Description

Type of Project:	Analysis
Category:	Hydrogen Fuel Pathways

Methodology/Approach:	Material and energy balances in ASPEN Plus®; Installed equipment costing based on grass roots estimate of commercial offering

Models Used:	H2A Production Model

Timeframe Studied:	2020 - 2030

Products/Deliverables

	Description: Spreadsheet Analysis Publication Title: Longer-Term (2020-2030) Hydrogen from Coal without CO2 Capture and Sequestration Publisher: National Renewable Energy Laboratory Author Name(s): Rutkowski, Mike http://www.hydrogen.energy.gov/h2a_prod_studies.html Publication Date: May 2008

Notes/Comments:	Hot raw gas from the transport gasifier is sent to the hot gas desulfurization process for desulfurization. Elemental sulfur is produced as a byproduct. The clean filtered hot gas then goes through a hydrogen separation membrane where the shift reaction occurs and hydrogen is separated from CO2. A portion of the hydrogen is fired to heat compressed air entering the ITM oxygen separation unit. Heat for the air is also extracted from the hot CO2 stream with a hight temperature heat exchanger. Additional hydrogen is used to produce power from a combined cycle SOFC. Pure oxygen produced from the ITM is cooled and compressed for use in the gasifier. The remaining hydrogen is compressed for product delivery. The CO2-rich stream is fired with oxygen and expanded to recover energy as power.

Notes/Comments:

Hot raw gas from the transport gasifier is sent to the hot gas desulfurization process for desulfurization. Elemental sulfur is produced as a byproduct. The clean filtered hot gas then goes through a hydrogen separation membrane where the shift reaction occurs and hydrogen is separated from CO2. A portion of the hydrogen is fired to heat compressed air entering the ITM oxygen separation unit. Heat for the air is also extracted from the hot CO2 stream with a hight temperature heat exchanger. Additional hydrogen is used to produce power from a combined cycle SOFC. Pure oxygen produced from the ITM is cooled and compressed for use in the gasifier. The remaining hydrogen is compressed for product delivery. The CO2-rich stream is fired with oxygen and expanded to recover energy as power.

Date Last Updated: 10/01/2008