Washing optimizing method and device of low-temperature multi-effect evaporation seawater desalting device

Abstract

The invention provides a washing optimizing method and device of a low-temperature multi-effect evaporation seawater desalting device. The device comprises an evaporator, a condenser, a heat exchanger, a water pump, an acid washing system, a pipeline and a valve, wherein the pipeline and the valve are used for connecting the evaporator, the condenser, the heat exchanger, the water pump and the acid washing system; and a valve is further arranged on a pipeline between a condenser inlet adjusting valve and a condenser inlet. The washing optimizing method and device of the low-temperature multi-effect evaporation seawater desalting device have the beneficial effects that the acid washing of the heat exchanger and a three-grade pump in the seawater desalting device can be realized; any water pump does not need to be started and materials are directly fed into each evaporator, so that the washing time is shortened and the washing cost of the device is reduced; and the economical efficiency is good, the washing procedure is simplified and the operation is convenient and fast.

Description

technical field [0001] The invention belongs to the cleaning field of seawater desalination devices, and in particular relates to an optimization method for cleaning a low-temperature multi-effect evaporation seawater desalination device and a cleaning device. Background technique [0002] The water heat exchanger and the condenser heat exchanger of the conventional low-temperature multi-effect evaporation desalination (MED) device have fouling during the working process, but the existing equipment cannot clean it. MED equipment needs to be cleaned quickly after pickling. However, after pickling of conventional MED equipment, in order to prevent acid corrosion, the 1-3 effect evaporator of the system must be flushed first, and then the 4-7 effect evaporator should be flushed, so that at least A cooling water pump and an intermediate water pump need to be started. The above flushing process takes more than 2 hours, which cannot meet the requirement that the evaporator must b...

AI Technical Summary

Problems solved by technology

The above flushing process takes more than 2 hours, which cannot meet the requirement that the evaporator must be flushed within 2 hours after pickling, and poses a corrosion threat to the equipment

In addition, the three-stage pump in the device will foul during operation, and the three-stage pump has no design requirements for pickling during the design process

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