A waste heat recovery device for yellow phosphorus slag water quenching

A waste heat recovery device, yellow phosphorus slag technology, applied in furnaces, furnace components, waste heat treatment, etc., can solve the problems of harsh factory environment, corrosion, and affecting the health of workers, so as to ensure safe operation, improve waste heat recovery efficiency, The effect of improving the sanitation of the factory environment

CN110926217BActive Publication Date: 2021-10-08HUBEI YAOZHIHE CHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-10-08

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Abstract

The invention relates to the technical field of thermal engineering, and discloses a yellow phosphorus furnace slag water quenching waste heat recovery device, comprising an electric furnace, a slag discharge port, a chute located below the slag discharge port, a water quenching pool connected to the bottom of the chute, and a slag discharge port A yellow phosphorus combustion device is installed at the junction with the chute, and a spray heat exchanger connected to the water quenching pool through a return pipe and a return pump. The spray heat exchanger is provided with a device for introducing the gas in the combustion device into the spray Induced fan in the heat exchanger. The invention has the following advantages and effects: first, the slag is sprayed and cooled by cold water, and after a large amount of steam is collected by the gas collecting hood, the waste heat is recovered in the steam heat exchanger, and the waste heat recovery efficiency is high; the spray heat exchanger can quench water The heat of hot water in the pool is recovered, and the spray heat exchanger can also exchange heat for P 2 o 5 Absorbed to achieve the effect of saving energy and reducing consumption while controlling pollution.
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Description

technical field

[0001] The invention relates to the technical field of thermal engineering, in particular to a waste heat recovery device for yellow phosphorus slag water quenching. Background technique

[0002] In the production process of yellow phosphorus, apatite, quartz and coke are smelted at a high temperature of about 1600°C in an electric arc furnace. When yellow phosphorus is produced, a large amount of high-temperature slag is produced. At present, the slag is usually discharged directly into a water pool for water quenching. The water quenching tank is usually open. After the high-temperature slag enters the water quenching tank, the water generates a large amount of water vapor under the action of heat. The slag also contains yellow phosphorus. When the yellow phosphorus encounters air, it burns to form white phosphorus pentoxide. Smoke, phosphorus pentoxide and water vapor are mixed to form phosphoric acid. If unorganized discharge will cause corrosion to the e...

Examples

Embodiment

[0025] Example: A yellow phosphorus slag water quenching waste heat recovery device such as figure 1 As shown, the yellow phosphorus electric furnace 1 is included, and the side wall of the yellow phosphorus electric furnace 1 is provided with a slag outlet 2, and a chute 3 is arranged below the slag outlet 2, and the bottom of the chute 3 is connected with the water quenching pool 4; The spray heat exchanger 5 includes a shell 51, a spray water inlet 52 and a spray head 53 located inside the shell 51, and a heat exchange tube 55 is arranged in the shell 51, and the shell 51 There is a spray water outlet 54 below, and the spray water inlet 52 is connected with the water quenching pool 4 through the return pump 6 and the return pipe 7. After the slag enters the water quenching pool 4 to heat the water, the return pump 6 pumps hot water into the spray tank. Heat energy is recovered in the shower heat exchanger 5 , and the return pipe 7 is located in the water quenching tank 4 an...