Low-temperature evaporator and control system thereof

Abstract

The invention discloses a low-temperature evaporator and a control system thereof. The low-temperature evaporator comprises an evaporator and a condenser, a waste liquid part, a defoaming part and a steam part are sequentially arranged in the evaporator from bottom to top, the condenser is divided into a pipe layer and a shell layer, and a heat supply circulation loop assembly is arranged between the waste liquid part of the evaporator and the shell layer of the condenser. A steam condensation assembly is arranged between a steam part of the evaporator and a pipe layer of the condenser, the output end of the steam condensation assembly is connected with a distilled water deep purification assembly, and a waste liquid inlet pipeline and an oil-water separation assembly are further arranged at the bottom of the evaporator. A control system of a low-temperature evaporator comprises a power-on monitoring module, a power-off monitoring module and a fault diagnosis module. The low-temperature evaporator and the control system thereof are high in automation degree, excellent in defoaming performance and high in effluent quality.

Description

technical field [0001] The invention relates to the technical field of solid waste treatment, in particular to a low-temperature evaporator and a control system thereof. Background technique [0002] The increasingly stringent requirements of environmental protection laws and regulations and the rising cost of solid waste (wastewater) outsourced disposal have significantly increased the risks and economic costs of corporate sewage disposal. Conventional wastewater treatment technologies (such as conventional multi-effect evaporation treatment process or MVR process) have high construction threshold, high initial cost and high operation and maintenance costs; and conventional multi-effect evaporation treatment process or MVR process has a high evaporation temperature, usually At 50-90 degrees Celsius. There are many problems in the evaporation of wastewater at this temperature, such as the accompanying evaporation of low-boiling organic matter in wastewater and the easy scal...

AI Technical Summary

Problems solved by technology

[0002] Increasingly stringent environmental protection regulations and rising solid waste (wastewater) outsourced disposal costs have significantly increased the risk and economic costs of corporate sewage disposal

Conventional wastewater treatment technologies (such as conventional multi-effect evaporation treatment process or MVR process) have high construction threshold, high initial cost and high operation and maintenance costs; and conventional multi-effect evaporation treatment process or MVR process has a high evaporation temperature, usually At 50-90 degrees Celsius

There are many problems in the evaporation of wastewater at this temperature, such as the accompanying evaporation of low-boiling organic matter in the wastewater and the easy scaling of the surface of the heating device in the evaporator, resulting in low water treatment quality, low efficiency and high maintenance costs.

[0003] Based on this, a miniaturized low-temperature evaporator appeared on the market, which solved the problems of high construction threshold of wastewater treatment equipment and easy fouling on the surface of the heating device. However, the demister in the existing low-temperature evaporator is coated with Teflon The plate-like structure of the coating has a number of micropores. When water vapor and small liquid droplets rise at the same time, due to the difference in mass of water vapor and small liquid droplets, they have different inertias. Under the action, the small liquid collides with the plate-like structure, is captured by the plate-like structure, and gradually gathers into large droplets and falls back into the waste liquid. The water vapor continues to rise through the micropores, and then condenses into distilled water. In this way, the waste liquid can be However, this structure has certain defects: when the small droplets continue to rise, they will gradually converge, and when the continuously aggregated small droplets gather at the micropores, tension will be generated. Blocking the micropores will reduce the ability of the demister to capture small droplets, resulting in a significant decline in the quality of the effluent; and the existing low-temperature evaporator is not sufficiently automated, and manual participation is required during operation

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