Temperature-controlled solar brine treatment system

Abstract

The invention discloses a temperature-controlled solar salt water treatment system, which is composed of a plurality of segmented solar heating units, and each heating unit includes a water inlet, a water inlet pipe, a fan-shaped heat preservation water tank, a curved guide wall, and an exhaust valve , U-shaped vacuum heat collector, bracket, temperature control system, outlet pipe and transitional heat preservation water tank. The bottom of the fan-shaped thermal insulation water tank is connected to the U-shaped heat collecting tube that absorbs sunlight and heat, and an inclined curved guide wall with a certain height is installed inside to promote the natural convection heat transfer of cold and hot water. The inner wall of the upper layer of the water tank is equipped with a temperature control system. According to the relationship between the water temperature and the water level, the water body that reaches the specified temperature range first flows into the transitional insulation water tank to store water and then automatically discharges into the next heating unit. An exhaust valve is installed on the top of the water tank to remove the water vapor in the water tank, thereby increasing the salinity of the water body. The next heating unit repeats the above process, thereby concentrating the brine to nearly saturated salinity step by step. The invention not only has low manufacturing cost, but also can effectively improve work efficiency, and is suitable for areas rich in saline water.

Description

technical field [0001] The invention relates to the field of salt water treatment, in particular to a salt water photothermal treatment technology. Background technique [0002] Southern Xinjiang occupies one-tenth of my country's land area, including the world's second largest mobile desert - the Taklamakan Desert. Water shortage, soil salinization and land desertification are bottlenecks restricting the economic and social development of southern Xinjiang. How to properly treat salt water is the key to solving the shortage of water resources in southern Xinjiang and improving saline-alkali land. [0003] Brine treatment is mainly divided into thermal treatment and membrane treatment. The former evaporates and gasifies brine by heating and then condenses it into fresh water, which is low in cost and inefficient; the latter uses the selectivity of the membrane to separate water and salt to obtain part of fresh water, but the cost is relatively high. For the southern Xinjia...

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Problems solved by technology

[0004] However, the existing solar photothermal treatment technologies all focus on obtaining fresh water

In addition, when using sunlight to heat water bodies, most of the existing heat collecting tubes are linear, and there is stagnation at the bottom; too many hot water storage tanks are cylindrical, which reduces the natural convection heating efficiency; it is difficult to reach the gasification temperature for single-body heating

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