System for preparing water by seawater distillation

A seawater and evaporator technology, which is applied in the system field of producing high-purity water by low-temperature multi-effect seawater distillation method, can solve the problems of large investment, many equipment, complicated maintenance, etc., and achieves the effect of less investment, good benefit and simple process.

Active Publication Date: 2018-10-16
SINOPEC GUANGZHOU ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires large investment, more equipment and complicated maintenance

Method used

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  • System for preparing water by seawater distillation

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Effect test

Embodiment 1

[0033] A system for producing water by seawater distillation, the system includes two evaporation groups, the evaporation groups need to be connected in series, adopt a single operation mode, close valves 7, 11, 13, 16, 20 and 22, open valves 8, 10, 14, 29, 17, 19, 23 and 24 valves. After the raw seawater is preheated in the condenser, it enters the first, middle and non-evaporator shells of each evaporation group respectively, and sprays on the heat exchange tubes. A part of the raw seawater is heated and evaporated and enters the adjacent next-effect evaporator tube side. , the remaining concentrated seawater enters the tube side of the next effect evaporator for further evaporation and concentration, and finally is discharged into the concentrated seawater pipeline by the final effect evaporator of each evaporation group. In the same evaporation group, the condensed water in the tube side of the neutralized evaporator and the seawater condenser enters the primary product wa...

Embodiment 2

[0035] A system for producing water by seawater distillation, the system includes 4 evaporation groups, the evaporation groups need to be connected in series, adopt the one-time operation mode, close the valves 7, 11, 13, 16, 20 and 22, open the valves 8, 10, 14, 29, 17, 19, 23 and 24 valves. After the raw seawater is preheated in the condenser, it enters the first, middle and non-evaporator shells of each evaporation group respectively, and sprays on the heat exchange tubes. A part of the raw seawater is heated and evaporated and enters the adjacent next-effect evaporator tube side. , the remaining concentrated seawater enters the tube side of the next effect evaporator for further evaporation and concentration, and finally is discharged into the concentrated seawater pipeline by the final effect evaporator of each evaporation group. In the same evaporation group, the condensed water in the tube side of the neutralized evaporator and the seawater condenser enters the primary ...

Embodiment 3

[0037] A system for producing water by seawater distillation, the system includes 6 evaporation groups, the evaporation groups need to be connected in series, adopt the one-time operation mode, close the valves 7, 11, 13, 16, 20 and 22, open the valves 8, 10, 14, 29, 17, 19, 23 and 24 valves. After the raw seawater is preheated in the condenser, it enters the first, middle and non-evaporator shells of each evaporation group respectively, and sprays on the heat exchange tubes. A part of the raw seawater is heated and evaporated and enters the adjacent next-effect evaporator tube side. , the remaining concentrated seawater enters the tube side of the next effect evaporator for further evaporation and concentration, and finally is discharged into the concentrated seawater pipeline by the final effect evaporator of each evaporation group. In the same evaporation group, the condensed water in the tube side of the neutralized evaporator and the seawater condenser enters the primary ...

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Abstract

The invention discloses a system for preparing water by seawater distillation. The system comprises a condenser and at least one evaporation group; the evaporation group is composed of a first-effectevaporator, a middle-effect evaporator and a final-effect evaporator; when the system comprises two or more evaporation groups, the evaporation groups are in a series relationship; and one end of thecondenser communicates with the evaporation group, and the other end of the condenser communicates with seawater. The system disclosed by the invention has less investment and a simple technological process, and two modes can be switched.

Description

technical field [0001] The invention relates to the technical field of seawater desalination, in particular to a system for preparing high-purity water by a low-temperature multi-effect seawater distillation method. Background technique [0002] Low-temperature multi-effect seawater distillation and desalination technology is a kind of seawater desalination, which refers to the multi-effect distillation desalination technology whose maximum evaporation temperature of seawater is lower than 70°C. Multi-effect distillation continuously evaporates seawater to obtain fresh water while steam is condensing. It is characterized in that a series of horizontal tube falling film evaporators are connected in series and divided into several groups, with a certain amount of steam input through multiple evaporation and condensation, so as to obtain distilled water that is multiple times the amount of heating steam. It is characterized by low pretreatment requirements for raw seawater, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04
CPCC02F1/04C02F1/043C02F2103/04C02F2103/08
Inventor 宋肖的汪红张文正
Owner SINOPEC GUANGZHOU ENG
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