Anti-scaling triple-effect evaporation device

A three-effect evaporation and anti-scaling technology, which is applied in the directions of multi-effect evaporation, descaling and water softening, and special treatment targets, can solve problems such as increased operating costs and difficult to handle solid waste

Inactive Publication Date: 2020-10-20
SHANGHAI JIANGZHE ENVIRONMENT ENG TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Industrial saline wastewater generally has high hardness. If the traditional multi-effect evaporation process is used to treat this kind of wastewater, in order to avoid the deposition of calcium and magnesium ions in the wastewater to form dirt on the surface of the evaporat

Method used

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  • Anti-scaling triple-effect evaporation device

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Embodiment Construction

[0017] The scheme of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Such as figure 1 As shown, an anti-fouling three-effect evaporation device includes a feed pump 2, a first-effect separator 4, a first-effect forced circulation pump 3, a first-effect heat exchanger 5, a second-effect separator 7, and a second-effect forced circulation Pump 6, two-effect heat exchanger 8, three-effect separator 10, three-effect forced circulation pump 9, three-effect heat exchanger 11, discharge pump 12, condenser 16 and condensed water tank 13;

[0019] The bottom outlet of the first-effect separator 4 is connected to the inlet of the first-effect forced circulation pump 3 through the discharge pipeline, and the outlet of the first-effect forced circulation pump 3 is connected to the bottom inlet of the first-effect heat exchanger 5 through the pipeline. The top outlet of the heat exchanger 5 is connected...

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Abstract

The invention relates to an anti-scaling triple-effect evaporation device. The device comprises a feeding pump, a first-effect separator, a first-effect forced circulation pump, a first-effect heat exchanger, a second-effect separator, a second-effect forced circulation pump, a second-effect heat exchanger, a third-effect separator, a third-effect forced circulation pump, a third-effect heat exchanger, a discharging pump, a condenser and a condensed water tank. In the device, a first-effect evaporation unit is composed of the first-effect separator, the first-effect forced circulation pump, the first-effect heat exchanger and a pipeline, a second-effect evaporation unit is composed of the second-effect separator, the second-effect forced circulation pump, the second-effect heat exchanger and a pipeline, and a third-effect evaporation unit is composed of the third-effect separator, the third-effect forced circulation pump, the third-effect heat exchanger and a pipeline. Enough circulation flow velocity and material circulation amount in the three evaporation units are guaranteed through the set of forced circulation pumps, so that the anti-scaling purpose is achieved; and meanwhile,secondary steam of the first-effect evaporation unit and secondary steam of the second-effect evaporation unit are adopted as heat sources of the second-effect evaporation unit and the third-effect evaporation unit respectively, so heat energy is fully utilized.

Description

technical field [0001] The invention belongs to the technical field of evaporation and concentration, and in particular relates to an anti-scaling three-effect evaporation device. Background technique [0002] Saline wastewater, especially high-salt wastewater, is a type of wastewater that is produced in large quantities and is extremely difficult to treat in the production processes of chemical, petrochemical, pharmaceutical, and electric power. This type of wastewater is often not a single component, but a mixed wastewater of various salts. It is a common method to treat this type of wastewater by evaporation. Among them, multi-effect evaporation, as a traditional evaporation process, is based on the cascade utilization of steam. Multiple evaporators are operated in series to improve thermal energy utilization efficiency. The application of multi-effect evaporation is flexible and can be operated alone or in combination with other methods. The system operation is safe and...

Claims

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Application Information

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IPC IPC(8): C02F1/04C02F5/00B01D1/26
CPCC02F1/048C02F5/00B01D1/26C02F2303/22C02F2201/007
Inventor 王开江
Owner SHANGHAI JIANGZHE ENVIRONMENT ENG TECH CO LTD
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