Evaporation apparatus with self-cleaning function and capable of simultaneously processing two different types of waste liquid

Abstract

The invention discloses an evaporation apparatus with a self-cleaning function and capable of simultaneously processing two different types of waste liquid. The evaporation apparatus is provided withtwo groups of evaporators which are connected in parallel, wherein the first group of evaporators is composed of two evaporators A and B which are arranged in series, and the second group of evaporators is arranged in a way that a partition plate is arranged in a cavity of one evaporator in a longitudinal direction of the cavity, one end of the partition plate contacts an evaporator lower end enclosure, the other end of the partition plate is arranged on a distributor and leveled to the upper edge of the distributor, so that the distributor and the entire evaporation cavity are divided by thepartition plate into two portions d and e. The evaporation apparatus has the advantages of high efficiency, sufficiency in waste heat utilization, and self-cleaning action.

Description

technical field [0001] The invention relates to an evaporation device with self-cleaning function and capable of treating two different kinds of waste liquids at the same time. The device of the present invention includes an MVR evaporation device composed of an evaporator and a steam compressor, and a pipeline connecting the secondary steam and the steam compressor, a pipeline of a fresh steam source, a distilled condensed water output pipe, and waste liquid to be treated The input pipeline, the treated concentrated waste liquid discharge pipeline, the pumps for conveying various liquids and the control valves installed on the pipelines. Background technique [0002] In our country, the serious shortage and shortage of water resources is an objective reality. At the same time, the reuse of water resources and pollution control are facing severe tests. Although some gratifying results have been achieved with the strengthening of national environmental governance policies an...

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Problems solved by technology

Membrane concentration is a high-efficiency purification and concentration technology. It uses the difference in the molecular weight of the active ingredient and the liquid to achieve directional separation and concentration. However, once the concentration of inorganic salts in the sewage reaches a certain level, it will not be able to form an effective osmotic pressure. , so the range of use is very narrow, and the investment cost is too high, which cannot meet the needs of the industry at present; evaporation crystallization is to evaporate sewage to form distilled water and concentrated brine, and then separate the concentrated brine from solid and liquid, whether it is using a traditional multi-effect system or using MVR evaporation system, the water quality after treatment is very good, the solid waste can be bagged centrally, and the treatment result is relatively thorough. However, the content of calcium, magnesium and silicon ions in the wastewater is very high, and it also contains a large amount of solid suspended matter such as calcium carbonate and Excessive ash will quickly scale in the evaporator, so after the equipment has been running for a period of time, it needs to be shut down for descaling, otherwise the equipment will not operate normally

[0004] The traditional MVR evaporation system has been widely used due to its simple operation, small footprint, and good energy-saving effect. However, it is an independent unit with poor process performance. A set of MVR evaporation system can only process one kind of medium

However, some enterprises produce many kinds of sewage, and the volume of each kind of sewage is not very large. If each kind of sewage needs to be equipped with different evaporation systems and treated by classification, the investment and management costs generated by such operation methods will make enterprises overwhelmed

[0005] There is also a relatively common problem in production enterprises: the amount of one kind of waste liquid produced in the production is relatively large, while the discharge of the other kind of waste liquid is smaller than that of the former waste liquid

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