A device for concentrating and crystallizing brine and recovering it by vibration

Abstract

The invention discloses a device for oscillating recovery after concentrating and crystallizing saline water. The device comprises a concentrating heat exchange tank and a crystallizing tank, wherein the concentrating heat exchange tank is of a jacket-type cylindrical structure which is composed of an inner drum and an outer drum and is transversely arranged; a rotating shaft transversely runs through from the inside of the inner drum; a fiber brush bundle is fixed on the rotating shaft; the inner drum of the concentrating heat exchange tank is communicated with the outside by virtue of an air conduit and an exhaust fan so as to form an evaporating line; a heating line is formed by the jacket of the concentrated heat exchange tank, a water return pipe, a waste heat water tank heat exchange pipe of a boiler, a circulating water pump and a water inlet pipe; the jacket of the concentrated heat exchange tank is connected to a water hammer vibrator which is composed of a crank connecting rod and a piston; the left end of the concentrated heat exchange tank is higher than the right end and is provided with a to-be-concentrated solution inlet pipe, and the right end is connected to the crystallizing tank by virtue of a flowing tank; the crystallizing tank is of a conical bottom structure; and the cone bottom is connected to a filter vibrating sieve and the to-be-concentrated solution inlet pipe by virtue of a mortar pump. The device disclosed by the invention is unique and skilful in concept, strong in practicability, complete in function and broad in application prospect.

Description

technical field [0001] The invention relates to a device for vibrating and recovering brine after concentration and crystallization. Background technique [0002] Sodium chloride is widely used in food, chemical industry, biology, medicine and other fields. These fields will produce thousands of tons of waste brine every day. If it is directly discharged, it will not only waste resources, but more importantly, because sodium chloride is harmful to natural microorganisms The inhibitory effect produced will have serious negative effects on the ecological environment. Scientific research has confirmed that: when the concentration of sodium chloride in the water reaches 1%, it will inhibit the growth and reproduction of most microorganisms; and when the concentration of sodium chloride in the water reaches 4%, most of the degraded COD and BOD Microorganisms cannot survive. [0003] Therefore, the recovery of sodium chloride in waste brine not only has important economic signif...

AI Technical Summary

Problems solved by technology

Since the solubility of sodium chloride is little affected by temperature, 39.8 grams of sodium chloride can be dissolved per 100 grams of water at 100°C, and 35.7 grams can be dissolved at 0°C. Therefore, generally, it can only be carried out by concentrated crystallization. Recycling, but the prior art lacks a complete set of devices that concentrate and crystallize brine and then vibrate and recycle. The breakthrough of the complete set of devices needs to overcome the small effective heat transfer area and low efficiency of the inner wall of the concentrated heat exchange tank, and it is difficult to separate and remove the crystallization on the inner wall of the concentrated heat exchange tank. , the crystallization tank is easy to block and many other technical bottlenecks

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