New industrial heat pump applications to phosphate fertilizer production
In this study Process Integration techniques based on Pinch Technology have been applied to Chevron's fertilizer complex in Rock Springs, Wyoming. The objectives of the study were to: identify heat pump opportunities and to determine the cost effectiveness of heat pumping compared to other process improvements. Significance of this Work Chevron's fertilizer complex is an example of an exothermic process. The sulfuric acid plant produces more heat than is needed for the rest of the site. The complex has, therefore, no need for a heating utility. The heat created in the sulfuric acid plant is used to produce high pressure steam, which is let down through a turbo generator satisfying most of the site's electrical needs. This type of process would normally not be considered for heat pumping because there is no heating utility load to reduce. However, reducing the requirements for extraction steam will liberate more steam for power generation. Heat recovery and heat pumping, therefore, have the unusual effect of an increase in electricity production, resulting in a reduction in electricity import, rather than a reduction in fuel consumption. Heat recovery opportunities show promise at both the sulfuric acid and phosphoric acid plants. No economically attractive opportunities were found for heat pumps in the process units when they were considered individually; however, the study identified that significant energy savings can be achieved by heat integration between the sulfuric acid plant and the phosphoric acid plant. 16 figs.
- Research Organization:
- Linnhoff-March, Inc., San Mateo, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC07-88ID12790
- OSTI ID:
- 5697764
- Report Number(s):
- DOE/ID/12790-5; ON: DE91013562
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FERTILIZER INDUSTRY
ENERGY EFFICIENCY
HEAT PUMPS
COST BENEFIT ANALYSIS
ENERGY CONSERVATION
FERTILIZERS
HEAT RECOVERY
HEAT TRANSFER
PHOSPHATES
PHOSPHORIC ACID
PRODUCTION
PROGRESS REPORT
STEAM GENERATION
SULFURIC ACID
WORKING FLUIDS
DOCUMENT TYPES
EFFICIENCY
ENERGY RECOVERY
ENERGY TRANSFER
FLUIDS
HYDROGEN COMPOUNDS
INDUSTRY
INORGANIC ACIDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
RECOVERY
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes