Iron and coke

Heating process (waste heat recovery from the ammonia still)This process uses a lithium bromide absorption type II heat pump. The characteristic of a lithium bromide absorption type II heat pump is that the output hot temperature is higher than the driving heat source temperature. It can widely recover low-temperature waste heat above 60℃, generally producing high-temperature hot water or steam above 100℃ (through a flash tank), which can meet the needs of process heating. Taking a certain coking plant's ammonia stripping process as an example, the heat of the top ammonia vapor is used as the driving heat source to produce hot water above 100℃ as a supplementary heat source for bottom heating, saving 26,400 tons of steam annually.Refrigeration processBy recovering the heat from the circulating ammonia water in the coking plant, the low-pressure steam generated by dry quenching coke waste heat power generation, coke oven gas power generation, and waste heat boilers, and the heat from the upper part of the primary cooler, etc., are used as the driving heat source for the lithium bromide unit to produce 16℃ cold water to meet the cooling needs of the lower part of the primary cooler and other processes. Taking a certain coking plant as an example, through an ammonia water type lithium bromide absorption unit recovering the heat of the ammonia water, the total refrigeration capacity is 9,300 kW. Compared with electric refrigeration, it operates 3,600 hours per year.

Petroleum and Chemical Engineering

Utilize excess hot water and steam generated from recycling processes (such as oil refining, EO/EG, styrene, EVA, polypropylene, caprolactam, etc.) as the heat source for a lithium bromide unit to produce chilled water at 5℃ and above, meeting the process cooling requirements. Taking a certain petrochemical plant as an example, the total cooling capacity is 41,856 kW through the recovery of waste heat using a hot water-type lithium bromide absorption unit. Compared to electric refrigeration, with an annual operating time of 8,000 hours.

District energy

By recovering the heat from the exhaust gas and cylinder jacket water of a gas internal combustion engine, and using it as a heat source for a lithium bromide unit, chilled water of 5℃ or higher can be produced to meet the cooling needs of air conditioning or data centers. Taking a distributed energy project as an example, by recovering the heat from the exhaust gas and cylinder jacket water of a gas internal combustion engine, the total refrigeration capacity is 20,825 kW. Compared with electric refrigeration, it operates for 8,000 hours annually.

Energy and Power

Heating Station Large Temperature Difference Heat PumpBy using large temperature difference heat pump units to lower the return water temperature of the primary network, the heat transfer capacity of the heating network is improved. Compared with traditional boiler room heating, for every 1 million square meters increase, large temperature difference heat pumps can save 27,600 tons of standard coal annually and reduce carbon dioxide emissions by 69,000 tons annually.Power Plant Waste Heat RecoveryRecover the heat from the cooling tower in winter. Using steam extracted from the turbine as the driving heat source, the return water temperature of the primary network is increased through a steam-type lithium bromide absorption heat pump to save boiler energy consumption. For example, in a certain power plant, the total amount of waste heat recovered by using a steam-type lithium bromide absorption heat pump unit to recover the heat from the cooling tower is approximately 62MW, with an annual operating time of 3600 hours.

Fermentation

Using process waste heat steam and hot water as the driving heat source for the lithium bromide unit to produce cooling water at 5℃ and above to meet the needs of process or air conditioning refrigeration. Taking a certain monosodium glutamate factory project as an example, using steam as the driving heat source, the total refrigeration capacity is 18,000 kW. Compared with electric refrigeration, the annual operating time is 3600 hours.

Manufacture

Utilizing waste heat steam, hot water, natural gas, and other energy sources as the driving heat source for a lithium bromide unit to produce chilled water at 5℃ or above, meeting process or air conditioning refrigeration needs. Taking a certain automobile manufacturing plant project as an example, using steam as the driving heat source, the total refrigeration capacity is 7,000kW. Compared with electric refrigeration, the annual operating hours are 3,600h.

Marine type

By recovering heat from the internal combustion engine exhaust gas and cylinder jacket water as the heat source for the lithium bromide unit, and through structural and material optimization to overcome the effects of ship sway and seawater corrosion, chilled water of 5℃ or higher is produced to meet air conditioning and refrigeration needs. Taking a 30,000-ton passenger-roll-on/roll-off ship as an example, the refrigeration capacity is 900 kW by recovering heat from the internal combustion engine exhaust gas and cylinder jacket water. With an annual operation of 3,240 hours, the annual diesel fuel consumption is reduced by 116 tons.

Sludge drying

Recover the water vapor heat from the low-temperature dryer, use steam as the driving heat source, and use a steam-type lithium bromide absorption heat pump to produce 90℃ hot water to save energy consumption.   Taking a certain sludge drying plant as an example, the heat from the low-temperature dryer is recovered through a steam-type lithium bromide absorption heat pump unit, with a total recovered heat of about 5,300 kW, running 8,000 hours per year.

Flue gas waste heat recovery

Recover heat from boiler flue gas. Using natural gas as the driving heat source, a direct-fired lithium bromide absorption heat pump is used to increase the boiler return water temperature, saving boiler energy consumption and achieving the purpose of flue gas decolorization.   Taking a heating company as an example, the total amount of recovered waste heat from boiler flue gas by using a direct-fired lithium bromide absorption heat pump unit is about 3,023 kW, with an annual operation time of 3,600 hours.

Textiles and Chemical Fibers

Using waste heat steam, hot water, and esterification steam from the process as the heat source for the lithium bromide unit to produce cooling water at 5℃ and above, meeting the needs of air conditioning or process refrigeration. Taking a certain chemical fiber project as an example, the total refrigeration capacity is 11,630 kW through the recovery of esterification steam heat. Compared with electric refrigeration, the annual operating hours are 8,000h.
< 1 >