TPL preheating scale prevention process in wastewater industry

Abstract

The invention relates to a TPL preheating scale prevention process in a wastewater industry. The process comprises the following steps: utilizing a TPL preheating scale prevention process on a preheating part, enabling materials to be mixed with zirconia particles before entering a shell and tube heat exchanger, enabling the materials to flow in the heat exchanger, enabling the separated calcium sulfate crystal and zirconia solid particles to be rubbed and collided with one another, and enabling the solid particles and the tube walls to be also rubbed and collided with one another, so that disturbance on a flow boundary layer is increased due to jump of the solid particles nearby the wall surfaces of heat exchange tubes, adsorption deposition of dirt components in the wall surface can be prevented or retarded, the flow boundary layer of fluid is damaged by friction and collision of the solid particles and the heat exchange tube walls, heat resistance of convective heat transfer is reduced, and the convective heat transfer coefficient is increased. According to the TPL preheating scale prevention process in the wastewater industry disclosed by the invention, the scale formation problem of a preheater is effectively solved, the energy-saving effect is obvious, the technology is mature and reliable, the heat transfer efficiency is improved, and the fire coal usage amount and environmental pollution are reduced; moreover, the cleaning period is prolonged, the actual production time is increased, and the labor intensity is reduced.

Description

technical field [0001] The invention relates to a TPL preheating and anti-scaling process in the wastewater industry, in particular to a reuse MVR evaporation and concentration process. Background technique [0002] Wastewater contains a large amount of inorganic salts and may also contain refractory or toxic organic pollutants. High salinity may become an inhibitor and poisonous agent for microorganisms, and cannot be simply treated with biochemical treatment. Combining the advantages of various methods, the combination method may be a better choice. Such as evaporative crystallization + biochemical, film + evaporative crystallization, etc. Evaporation crystallization is also an important part of wastewater treatment. [0003] The structural problem of heat exchange equipment is a common problem in chemical industry, petrochemical industry, salt and salt chemical industry, light industry and other industries, and it is an important bottleneck restricting production. Thr...

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Problems solved by technology

[0008] In view of the above-mentioned deficiencies in the prior art, as well as the problems of high investment, high energy consumption, and high operating costs faced in the existing high-salt wastewater treatment process, the present invention provides a TPL preheating and anti-scaling process in the wastewater industry, which will evaporate and boil The combination of heat transfer and circulating fluidized bed technology forms a multiphase flow circulation system composed of solvent vapor, solution, and inert solid particles in the evaporation system

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