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The waste gas generated during the high-temperature smelting process is converted into heat energy for office and daily use through a set of waste heat recovery devices, which can be used for heating and using hot water for hundreds of people. On January 19th, the reporter learned in Fuyang Meilixin Technology Co., Ltd. (referred to as the company) that the waste heat recovery unit can save the company 1 million yuan per year.

As an auto parts manufacturer, Meritor's products include engine blocks, automatic transmission housings, etc. The main raw materials for these products are aluminum ingots. Wang Minghu, the company's equipment minister, said that only when the temperature of the furnace is raised to more than 800 degrees Celsius, the solid aluminum material can be melted. It is understood that in many enterprises, the residual heat of the furnace is discharged into the air along with dust and smoke. “We developed and designed a waste heat recovery device at the end of the furnace to convert the high-temperature evaporated waste into thermal energy for office and living,” said Wang Minghu.

On the morning of January 19, the reporter saw in the company's die-casting workshop that the workers placed a car of aluminum into the elevator next to the furnace, waiting for the system to automatically transport the aluminum material to the furnace. The company has four furnaces, each with a waste heat recovery unit. In the small attic next to the die-casting workshop, the reporter saw that one of the waste heat recovery devices was connected to the furnace on one side and the water circulation system on the other, and the isolated dust and ash were collected centrally. Wang Minghu said that the hot air left by the waste heat recovery device will enter the water circulation system. "The company's winter heating and the use of hot water for more than 500 employees all year round have been solved."

The reporter then went to the company's staff quarters, free to unscrew a faucet, touch the water temperature, and found it to be hot. Liu Hongxia, an employee of the company's logistics department, said: "The company supplies hot water 24 hours a day, whether it is working water or going back to the bedroom after work, and turning on the faucet with hot water." "Not only the full use of energy, but also achieved Zero emissions.” Wang Minghu said that if the company's production capacity increases in the future, it can also increase the income of the company by erecting pipes to transfer excess heat energy to surrounding residential communities.

Wang Minghu told reporters that the burn rate of the company is about 2% lower than that of other companies in the same industry. “When the waste heat recovery unit is put into use, the company’s carbon dioxide emissions are reduced, and the amount of natural gas required for furnace combustion is The month has also decreased by 2%."