Pre-filtering device of aluminum heat exchange tube type sea water desalination system and cleaning method
A pre-filtering and heat pipe-type technology, applied in chemical instruments and methods, filtration treatment, seawater treatment, etc., can solve the problems of reduced production efficiency of desalinated water in effect evaporators, failure of normal production and operation, etc., to solve the problem of localized corrosion , Improve the quality of influent water and avoid the effect of structural space restrictions
A pre-filtering and heat pipe-type technology, applied in chemical instruments and methods, filtration treatment, seawater treatment, etc., can solve the problems of reduced production efficiency of desalinated water in effect evaporators, failure of normal production and operation, etc., to solve the problem of localized corrosion , Improve the quality of influent water and avoid the effect of structural space restrictions
CN111439874APending Publication Date: 2020-07-24TIANJIN SDIC JINNENG ELECTRIC POWER
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Embodiment 1
[0043] Such as Figure 1-4 As shown, a pre-filter device of an aluminum heat exchange tube type seawater desalination system is provided with a pre-filter device at the inlet end of the cold source side of the low-temperature multi-effect seawater desalination system, and the pre-filter device includes several pre-filter units, Several of the pre-filter units adopt the form of split arrangement of the main pipe, which can automatically adjust the running or standby state according to the actual operating state of the seawater desalination device; the raw seawater enters the clear water pool (also called the buffer pool) , its internal structure is "S" shape, using the limited space to maximize the length of the seawater flow channel, effectively settling the suspended solids and slime in the seawater, and reducing the cement and sand content), through the corresponding pump unit group of the pre-filter unit and The corresponding filter unit group is sent to the spray system in...
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Abstract
The invention discloses a pre-filtering device of an aluminum heat exchange tube type seawater desalination system. The pre-filtering device is arranged at the inlet end of the cold source side of a low-temperature multi-effect seawater desalination system; the pre-filtering device comprises a plurality of pre-filtering units; a plurality of pre-filtering units are arranged in a main pipe split manner, each pre-filtering unit comprises a seawater booster pump, a front-end pressure transmitter, an ion trap, a rear-end pressure transmitter, a filter, a VSD logic control system and a backwashingdevice, and the backwashing device comprises a backwashing buffer tank, a backwashing pump and a backwashing filter. The invention aims to provide the pre-filtering device of the aluminum heat exchange tube type sea water desalination system. The concentration of corrosive metal ions in seawater can be reduced to a negligible degree, the aluminum alloy heat exchange tube is effectively protected from being attacked by the ions to generate dynamic current corrosion, safe and stable operation of the sea water desalination device is guaranteed, and the disassembling and blocking frequency of theheat exchange tube bundle of the effect evaporator is reduced.
Description
technical field [0001] The invention relates to the technical field of seawater desalination, in particular to an aluminum heat exchange tube type seawater desalination system pre-filter device and cleaning method. Background technique [0002] The heat exchange process of the low-temperature multi-effect seawater desalination device is mainly evaporation and condensation. The raw seawater or concentrated seawater is evenly distributed in the effect body evaporator through the spray system. The outer surface of the heat exchange tube is distributed in a thin film to realize heat exchange. The seawater absorbs the latent heat of the steam and vaporizes, and the steam on the inner wall of the tube condenses into fresh water, repeating the above process to realize the desalinated water production process. At present, in low-temperature multi-effect seawater desalination devices that mainly use aluminum alloy heat exchange tubes as the main heat exchange medium, except for the t...
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Patent Timeline
24 Jul 2020
Publication
CN111439874A
- IPC
- C02F9/08; C02F103/08
- CPC
- C02F1/001; C02F1/48; C02F2103/08; C02F2303/14
- Inventors
- 邢兆强; 依庆文