Under the new rule, by 2015, existing boilers must switch from No. 6 oil to a low-sulfur version of the No. 4 heating oil or to an equivalent cleaner fuel.
We will carry out a full range of key energy-saving projects, including upgrading of low-efficiency coal-fired industrial boilers and furnaces and combined heat and power facilities.
全面实施低效燃煤工业锅炉（窑炉）改造、区域热电联产等重点节能工程。
3
The application of horizontal dense-dilute technology in some boilers has resolved many problems, such as the fire, self-supporting burning and burn-up problem of low volatile coal.