Submerged combustion evaporator, method and combined evaporator for step-by-step heat transfer evaporation

Abstract

This application proposes a submerged combustion evaporator, method and combined evaporation device for step-by-step heat transfer evaporation, wherein the submerged combustion evaporator includes: a shell, the shell is formed with a space for accommodating evaporating liquid; a partition, the partition is arranged on Inside the shell, the partition divides the shell into a heat transfer area and an evaporation area; a steam room, the steam room is located above the liquid level in the evaporation area; a smoke chamber, the smoke room is located above the liquid level in the heat transfer area, The flue gas chamber is provided with a flue gas outlet, and the flue gas outlet is provided with a pressure valve, which can control the gas pressure in the flue gas chamber so that the gas pressure in the flue gas chamber is greater than the gas pressure in the steam chamber. By adopting the above technical scheme, the submerged combustion evaporator is divided into two parts, the evaporating liquid can be mainly heated in the heat transfer area (a small amount of evaporation or crystallization may occur), and the evaporating liquid can be evaporated in the evaporating area, thereby facilitating the collection of pure steam. By utilizing the latent heat of steam, the energy consumption of the submerged combustion evaporator can be lowered.

Description

technical field [0001] The application belongs to the field of high-salt organic waste liquid treatment for environmental protection, and in particular relates to a submerged combustion evaporator for step-by-step heat transfer evaporation, a method and a combined evaporation device. Background technique [0002] The existing submerged combustion evaporation reactor directly passes high-temperature flue gas into the evaporating liquid to realize heating and evaporation, and the heat transfer and evaporation processes are carried out simultaneously, so that the evaporated steam and flue gas are mixed together, which is difficult to be directly used efficiently by the evaporator . [0003] At present, the mixed gas of steam and flue gas can heat the evaporating liquid through the heat exchange of the heat exchanger, but due to the small temperature difference between the mixed gas and the evaporating liquid, a large amount of latent heat of vaporization in the steam has not be...

AI Technical Summary

Problems solved by technology

[0002] The existing submerged combustion evaporation reactor directly passes high-temperature flue gas into the evaporating liquid to realize heating and evaporation. The heat transfer and evaporation processes are carried out simultaneously, so that the evaporated steam and flue gas are mixed together, which is difficult to be directly used efficiently by the evaporator.

[0003] At present, the mixed gas of steam and flue gas can heat the evaporating liquid through the heat exchange of the heat exchanger, but due to the small temperature difference between the mixed gas and the evaporating liquid, a large amount of latent heat of vaporization in the steam is not effectively utilized and is discharged. , resulting in a waste of energy, making the overall energy consumption of the submerged combustion evaporator higher

Images