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Low-temperature multi-effect seawater desalination device novel spray system

A spray system and low-temperature technology, applied in the field of spray systems, can solve the problems of reduced contact area, reduced heat transfer efficiency, reduced water production ratio, etc., and achieve the effects of smooth over-regulation, increased production efficiency, and delayed corrosion rate

Pending Publication Date: 2019-08-30
TIANJIN SDIC JINNENG ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: the present invention mainly solves the problem that the heat source and cold source contact area is reduced due to the uneven water dist

Method used

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  • Low-temperature multi-effect seawater desalination device novel spray system
  • Low-temperature multi-effect seawater desalination device novel spray system
  • Low-temperature multi-effect seawater desalination device novel spray system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as Figure 6 As shown, the connection electric door 11 between the first filter 14 and the second filter 15 is closed, and the first filter 14 and the second filter 15 operate simultaneously. The cold sources enter the inlets of the first filter 14 and the second filter 15 respectively, and flow out from the outlets of the first filter 14 and the second filter 15 . In this way the first filter 14 and the second filter 15 operate simultaneously.

Embodiment 2

[0063] Such as Figure 7 As shown, open the connection electric door 11 between the first filter 14 and the second filter 15, close the second inlet electric door 16 and the second outlet electric door 17 of the second filter 15, and open the second sewage electric door 18. At this time, the first filter 14 operates normally, and at the same time, the first filter 14 provides a clean water source for the second filter 15 for cleaning. The cleaning water source passes through the contact electric door 11, enters from the outlet of the second filter 15, enters the inside of the filter cartridge 7 from the outside of the filter cartridge 7 for backwashing, washes away the impurities deposited on the inside of the filter cartridge 7, and backwashes the sewage from the bottom of the filter cartridge 7. The second sewage pipe discharges. This method is used when the load of the seawater desalination equipment is relatively low. At this time, the first filter 14 is in the working s...

Embodiment 3

[0065] If the load of seawater desalination equipment is high, but at the same time the filter needs to be cleaned, this cleaning method should be used: Figure 8 As shown, now the first filter 14 is in working condition, and the second filter 15 is in the internal cleaning state, close the connection electric door 11 between the first filter 14 and the second filter 15; close the second filter 15 The pneumatic shut-off valve 6, so that the shut-off valve valve plate 13 is in a closed state; open the second sewage discharge electric door 18; at this time, in the second filter 15, the cold source flows out from the side wall on the upper side of the filter cartridge 7 and enters The gap between the outside of the filter cartridge 7 and the filter housing flows in from the outside of the filter cartridge 7 to backwash the lower filter cartridge 7 of the second pneumatic shut-off valve 6, and the backwash sewage flows from the second sewage pipe at the bottom of the filter cartrid...

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Abstract

A low-temperature multi-effect seawater desalination device novel spray system is characterized in that that spray system comprises an evaporator, wherein the evaporator has a circular cavity structure in cross section, the top of the evaporator is connected with a water inlet pipe, and a cold source flows through the inlet pipe; a seawater collecting pipe is arranged at the bottom of the evaporator, and a manhole is also arranged at the side surface of the evaporator; a filter device comprises a filter and a plurality of pipes and valves adapted to the filter, wherein pressure transmitters are arranged at the water inlet end and the water outlet end of the filter, the pressure transmitter can monitor the pressure difference between the two ends of the filter, and the filter device turns on a self-cleaning function when the pressure difference is greater than a preset value; a spraying device is arranged at the top in the evaporator, the spraying device is connected with the water inlet pipe of the evaporator. The invention solves the problems that the heat source and cold source contact area is reduced and the heat exchange efficiency is reduced due to the uneven water distribution of the nozzle of the spray system of the low-temperature multi-effect seawater desalination evaporator, thereby leading to the reduction of the water production ratio.

Description

technical field [0001] The invention relates to a spray system, in particular to a novel spray system of a low-temperature multi-effect seawater desalination device. Background technique [0002] Low-temperature multi-effect seawater desalination refers to the desalination technology in which the maximum evaporation temperature of raw seawater is below 70°C. It is characterized in that a series of evaporators containing spray tube bundles are connected in series, and a certain amount of steam is input through multiple evaporation and condensation. The evaporation temperature of the latter effect is lower than that of the former effect, so as to obtain desalinated water that is multiple times the amount of steam. During the heat exchange process of low-temperature multi-effect seawater desalination, the spray system evenly distributes the raw seawater or concentrated seawater on the outer surface of the heat exchange tube bundle of each evaporator through nozzles, forming a t...

Claims

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Application Information

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IPC IPC(8): C02F1/08C02F103/08
CPCC02F1/08C02F2103/08C02F2303/14Y02A20/124
Inventor 邢兆强依庆文朱逢民杨德久周永利
Owner TIANJIN SDIC JINNENG ELECTRIC POWER
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