Heaters with feed and air preheated by hot flue gas and hot residue oil respectively have attracted extensive attention.
管式加热炉采用“冷进料、热油预热空气”以提高热效率，受到了广泛的注意。
2
Fuel oil and lubricating oil sy stems including pumps, purifiers, filters, heaters.
滑油管系，包括泵、分油机、滤器、加热器和管系状况满意，无泄漏。
3
High thermal utilization factor, resource as steam, electricity and heating, coal, oil, fuel heaters, etc, could be used according to the user's situation.