The paper emphasizes the essentiality of boiler blowdown heat recovery,and provides an completed method of the heat recovery,illuminates by related calculations the economic benefits that can be obtained. .
With the adoption of the method of computer simulation of the shift converter and process to obtain the consumption of steam per ton of ammonia in the shift system, the specific steam consumption is calculated respectively for the heat recovery system under various process parameters (including mainly the temperature parameters of the saturation/hot water tower and water heater, resistance in the system, and steam temperature), and the relationship is given of change in specific steam consumption with the various parameters.
By comparing various single well and doublet production schemes, it is shown that reinjection of heat depleted water greatly enhances heat recovery and reservoir lifetime, and can be optimized for maximum heat production.
Simple models are discussed to evaluate reservoir lifetime and heat recovery factor in geothermal aquifers used for urban heating.
Reservoir lifetime and heat recovery factor in geothermal aquifers used for urban heating
The RCU actual ΔTmin is around 55 °C indicating a low level of current heat recovery.
The production sequence and the processing schedules of multiproduct batch processes can be changed for maximum heat recovery and minimum equipment costs between batch streams.