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Seawater desalination system with improved seawater preheating process

A process improvement and seawater technology, which is applied in seawater treatment, general water supply saving, heating water/sewage treatment, etc., can solve the problems of low equipment efficiency, high resistance of seawater preheater, energy waste, etc., and achieve the effect of reducing equipment cost

Inactive Publication Date: 2010-06-16
CHINA SHENHUA ENERGY CO LTD +4
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Problems solved by technology

[0002] The seawater preheater in the existing process is installed on the process pipeline in front of the condenser. After the preheated seawater enters the condenser in summer working conditions, a large amount of preheated seawater needs to be discharged, resulting in energy waste. Low heat utilization rate of brine, high resistance of seawater preheater and low equipment efficiency

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  • Seawater desalination system with improved seawater preheating process
  • Seawater desalination system with improved seawater preheating process

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Embodiment Construction

[0008] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0009] The seawater enters the condenser 5, and after preheating and degassing in the condenser 5, it is divided into two parts, one part is discharged back to the sea as cooling seawater, and the other part is used as material water for the evaporation process. The seawater preheater 4 is arranged after the condenser 5, the cooling medium is raw seawater, and the heating medium is concentrated brine from the discharge device. The temperature of the heated material water rises, and it is pumped into the m-effect evaporator group through the material water pump 3 (only the m-1 effect evaporator 1 and m-effect evaporator 2 are shown in the figure), and the underheating is reduced. The heating steam enters the heat transfer tube of the first effect evaporator and condenses in the tube. The seawater material water is evenly distributed to the top row of tubes of the evap...

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Abstract

The invention relates to a seawater desalination system with an improved seawater preheating process. The system comprises a condenser, a seawater preheater, a material pump, an m-effect evaporator group and a finished product pump, wherein the m-effect evaporator group comprises at least two evaporators connected in parallel. The seawater desalination system is characterized in that the seawater preheater is arranged on the rear of the condenser.

Description

technical field [0001] The invention relates to a seawater desalination system with an improved seawater preheating process. Background technique [0002] The seawater preheater in the existing process is installed on the process pipeline in front of the condenser. After the preheated seawater enters the condenser in summer working conditions, a large amount of preheated seawater needs to be discharged, resulting in energy waste. The heat utilization rate of brine is low, the resistance of seawater preheater is large and the efficiency of equipment is low. Contents of the invention [0003] In order to solve the above problems, the present invention moves the position of the seawater preheater to the condenser, and the seawater preheater only heats the temperature of the part of the material water entering the evaporator, effectively utilizing the heat of brine. [0004] Therefore, the object of the present invention is to provide a seawater desalination system with impro...

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Application Information

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IPC IPC(8): C02F1/04C02F103/08
CPCY02A20/124
Inventor 张忠梅张建丽高峰周洪光丁涛杨庆卫吴志奇牛聚秦徐芙蓉
Owner CHINA SHENHUA ENERGY CO LTD