Distillation and water purifying equipment adopting solar

Abstract

The invention provides distillation and water purifying equipment adopting solar. The water purifying equipment comprises a solar concentrator, a bracket and a distillation retort, wherein the distillation retort is arranged on the bracket; the solar concentrator focuses faculae reflected by sunlight to the distillation retort; the distillation retort is connected with a condenser through a steam exhaust pipe, the condenser is provided with a distilled water drain port, to-be-treated raw water in the distillation retort is heated through focal spot energy, steam produced by the to-be-treated raw water after heating is introduced into the condenser through the steam exhaust pipe, and distilled water obtained through condensation of the steam in the condenser is drained out through the distilled water drain port. According to the water purifying equipment adopting solar distillation, light reflection loss, convection heat loss, the influence of scaling of the distillation retort on the heat transfer performance as well as the heat transfer resistance can be reduced, the problem of corrosion of the distillation retort wall can be solved, and the water purifying equipment has sterilization and disinfection functions. The water purifying equipment has the advantages of higher heat efficiency, simple structure, low cost and portability.

Description

technical field [0001] The invention is a solar distillation water purification equipment, which belongs to the transformation technology of the solar distillation water purification equipment. Background technique [0002] Distillation technologies such as multi-effect distillation (MED), multi-stage flash distillation (MSF) and compressed gas distillation (VC) have been applied to desalination of seawater, brackish water and brine, and can also be used for softening of high hardness water, high fluorine water, Purification treatment of high arsenic water, other polluted water, industrial wastewater, domestic sewage, etc. However, these distillation techniques need to burn fossil fuels to supply the heat required for water evaporation, which consumes a lot of energy. In recent years, due to the increasingly prominent environmental problems such as global water and energy shortages, greenhouse effect, and climate change, solar distillation water purification technology that...

AI Technical Summary

Problems solved by technology

Since the selective solar radiation coating cannot withstand the high temperature of the focal spot, it is not possible to increase the solar radiation absorption rate by coating the selective solar radiation coating on the bottom of the retort

In the prior art, the bottom of the retort is generally coated with matte black paint to increase the absorption of solar radiation, but there will still be a large loss of light reflection

[0009] (2) Large convective heat loss

Therefore, the retort loses a lot of heat to the surrounding cold air through convection heat transfer.

[0011] (3) Distillation tanks are prone to fouling, reducing heat transfer performance

[0013] (4) Large heat transfer resistance

[0015] (5) The distillation tank is easy to corrode

[0016] When the raw water to be treated contains a lot of salt or metal ions (such as seawater, brackish water, and brine, the salt content can be as high as 5%), electrochemical corrosion reactions are prone to occur at the distillation operating temperature, resulting in corrosion of the distillation tank wall

Therefore, solar distilled water purification equipment needs to take anti-corrosion measures (such as adding chemical scale inhibitors to the raw water to be treated), which increases the cost

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