Method and equipment for using condensed water of new steam stripped under high pressure

Abstract

This invention discloses a device for utilizing high-pressure stripped steam condensate. The device comprises a condensate channel, a water inlet, an air outlet, an exit, a pump and pipelines. When the steam enters the condensate channel, a large amount of gas is produced, part of which can be provided to thermal water stations and thermal water channels, and the rest can be provided to steam stations. The condensate is discharged through the condensate channel by the pump. The device has such advantages as balanced pressure, high resource utility and high safety, and can be used in aluminumoxide production.

Description

Technical field: [0001] The invention relates to a stripping process of alumina production, in particular to a method and device for utilizing high-pressure stripping fresh steam condensed water. technical background: [0002] High-pressure dissolution in the production of alumina from gibbsite. Most factories use high-temperature, high-pressure fresh steam to indirectly heat the stripping pulp. High-pressure condensed water is generated after the heat exchange between the new steam and the pulp, and a large amount of secondary steam is generated during the throttling and decompression process of the new steam condensed water. In the original technology, this secondary steam is connected to the low-pressure (about 0.6-0.7MPa) steam pipes that supply steam to the plant area from the thermal power plant. This has the following disadvantages: [0003] The pressure imbalance between the secondary steam of the new steam condensate and the low-pressure steam supplied by the ther...

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Problems solved by technology

[0003] The pressure imbalance between the secondary steam of the new steam condensate and the low-pressure steam supplied by the thermal power plant occurs from time to time, which causes strong vibration of the steam pipe network and even the equipment, and even causes the secondary steam of the new steam condensate tank to be unbalanced. If it cannot be discharged, the pressure in the tank will increase, making it difficult to run continuously and stably in production, and even cause safety accidents

[0004] The low-pressure steam in the factory area is used for the production of the whole factory and the life of the factory area (such as baths, etc.). During the indirect heating process, the phenomenon of perforation or cracks in the heating tube bundle may occur. Once it occurs, there will be a small amount of alkali-containing material Slurry escapes into the heating chamber, causing the new steam condensed water to carry alkali twice, and pollute the low-pressure steam of the whole plant

This method has hidden dangers of personal safety and production

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