Baotou Rare Aluminium Thermal Power Station
Low Pressure Steam LiBr Absorption Heat Pump
Project location: Baotou, Inner Mongolia
Equipment selection:
2 unit 31.63MW steam LiBr absorption heat pump
1 unit 68MW steam LiBr absorption heat pump
Main function: District heating
General introduction
In 2018, Baotou Rare Aluminum Company, a subsidiary of East Hope Group, undertook a reconstruction of low-pressure steam systems in its power station to recover waste heat, advancing the comprehensive utilization of energy resources.
The implementation of advanced heat pump technology enables the recovery of steam pump heat to elevate the temperature of circulating water in the heating station, supporting urban central heating and residential needs. Baotou Aluminum’s thermal power station operates four units, each equipped with a steam pump driven by a three-stage extraction from a steam turbine. This low-pressure steam, traditionally condensed and cooled by circulating water, results in energy loss and impacts turbine vacuum efficiency, increasing coal usage and water evaporation. To address this, the power plant sought optimal solutions for steam pump waste heat recovery. After thorough system analysis, site inspections, feasibility discussions, and precise thermal calculations, DEEPBLUE's innovative heat pump technology was selected to effectively harness and recover this waste heat.
The heat pump technology solutions at Baotou Aluminum began with Unit 1, with project initiation in June 2017, commissioning in October, and full operation starting November 2. This project not only minimized heat loss from the steam pump but also captured and repurposed that heat for urban heating. Each hour, the system heats 1,000 tonnes of water from 60°C to 90°C, supplying warmth to the city’s heating network.
Implemented in three phases, the project boasts a total heating capacity of 131 MW. The heat pump system operates stably, achieving high efficiency in heat recovery, vacuum optimization, and reduced water usage. Based on verified calculations, the seasonal heat recovery benefits exceed 17 million CNY (about 2.58 million USD), while vacuum improvement yields an additional 450,000 CNY (68,180 USD), and water savings add nearly 900,000 CNY (136,360 USD). These results align closely with the projected benefits, underscoring the system’s efficacy.
Technical Data
Heating capacity: 31.63MW/unit
Qty: 2 unit
DHW inlet: 60°C
DHW outlet: 90°C
Low pressure temp./steam: 11.8kPa(a)
Driven steam pressure: 0.883MPa(G)
Dimension: 9753*4717*5750mm
Operation weight: 100t/unit
COP: ≥1.8
Web: https://www.deepbluechiller.com/
E-Mail: yut@dlhope.com / young@dlhope.com
Mob: +86 15882434819/+86 15680009866
Post time: Mar-31-2023
