Erving Industries, Inc. - 6.2-MW CHP System - Case Study
Quick Facts
LOCATION: Erving, Massachusetts
MARKET SECTOR: Pulp and Paper
FACILITY PEAK LOAD: 6.36 megawatts (MW)
EQUIPMENT: Solar Taurus 60 gas turbine with duct-fired heat recovery steam generator
FUEL: Compressed natural gas
USE OF THERMAL ENERGY: Steam for paper machines and other process users
CHP TOTAL EFFICIENCY: 75%
ENVIRONMENTAL BENEFIT: Reduced 21.6 million lb of CO2/yr
ENERGY SAVINGS: 39 million kWh/yr
PAYBACK: Less than 3 years (with utility incentives)
CHP IN OPERATION SINCE: December 2015
SPECIAL NOTE: The turbine can alsrun on ultra-low-sulfur fuel oil if needed
Site Description
Erving Industries, Inc. is a family run company that owns and operates a paper mill between Route 2 and the Millers River in Erving, Massachusetts. The paper mill produces approximately 120 tons per day of tissue- and towel-grade paper for a wide variety of products, including napkins, toweling, and table covers. Consistent with Erving’s environmental stewardship objectives, Erving paper is manufactured using 100% recycled paper feedstock.
Since opening in 1908, the Erving paper mill has undergone extensive additions and modifications and has been successful via personalized customer service and Yankee ingenuity. For example, the rerouting of Route 2 provided the mill with the space texpand operations and increase flexibility. As another example, Erving implemented energy efficiency improvements and installed a CHP system in 2015. The CHP system supplanted a 250-million lb/yr boiler and reduced Erving’s 45 million kWh/yr electric consumption by approximately 39 million kWh/yr. Erving’s ongoing efforts treduce operating costs and improve resiliency will benefit the mill for years tcome.
Reasons for CHP
The site was an excellent candidate for CHP because of a large, consistent steam load, and because of utility, state, and
federal incentives that improved the project’s economics. Additionally, CHP provided Erving Industries a proven means to
achieve three of their goals:
- Reduce energy-related operating costs,
- Increase reliability, and
- Further corporate sustainability objectives.
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