Furnace costs

Process furnace cost. Process furnaces are used for the larger-sized process heating unit operations, more specifically for heating duties of 30 mmBtu/h and larger, up to 500 mmBtu/hr. (The abbreviation mmBtu/h simply means millions of British thermal units per hour.)... 

To obtain the cost at design conditions, correct the base cost for temperature, pressure, material of construction, and equipment design. In Table 2.4.1, the operating ten jerature is specified as 2,000 °F. From Table 2.10, the temperature is between 600 and 5000 C. Taking the high value, the temperature correction factor is 1.2, The pressure is at base conditions, and therefore the pressure correction factor is 1.0. Because the fiimace is constructed of carbon steel the material correction factor is also 1.0. In this case, the design factor is assume to be 1.0. Thus, from Equation 2.15.3, the furnace cost at design conditions is... 

Chambers, I- E, Potter. W. S Design eihvkne furnace Part 1 Minimum ethvlene. Part 2 Maximum olefin production, Patt3 Furnace cost. Hydrocarbon Processing, 53 (1) 121-126 (1974), 53 (3) 95-100 (1974). 53 (8) 90-103 (1974). 

Toluen cost - Makeup gas cost-Compresor cost - Furnace cost- Reactor cost... 

Due to its batch character, the rotary furnace provides an equal flexibility as the coreless induction furnace in the cast iron foundry. The investment costs however are lower. A 5 tonne furnace costs EUR 500000 - 600000, of which 30 % are for the exhaust system and dedusting. The rotary furnace is also a good alternative for the small-scale cold blast cupola, due to its higher flexibility and lower environmental costs. Rotary furnaces are used for melting volumes of 2 to 20 tonnes, with production capacities of 1 to 6 tonnes per hour. 

The eost caleulation was performed for melting eosts for a melting production of 1 tonne/h, working 8 hours/day. For the induetion furnace a distinction is made between peak-time electricity costs and off-peak-time. Since electricity is die major component of the costs, this distinction makes a big difference to the final cost. Operation of the induction fiimace during off-peak time (night-time) results in costs comparable to rotary furnace costs. The data show that the investment has a 5 - 9 years payback period. 

Lead smelter capital costs - sinter plant-blast furnace (cost basis - June 2005). 

Direct operating costs for a 100 000 t/a iead smeiter. Sinter piant-biast furnace (costs in US as at June 2000). 

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