Indirect heat exchange and evaporation type condensation system of final-effect waste steam of concentration evaporator system

Abstract

The invention discloses an indirect heat exchange and evaporation type condensation system of final-effect waste steam of a concentration evaporator system. The indirect heat exchange and evaporationtype condensation system comprises a shell with an air inducing opening in the top wall and an induced draught fan arranged on the air inducing opening, wherein a spraying pipe, a heat exchanger and awater collection chamber are arranged at intervals in the shell from top to bottom; a steam inlet of the heat exchanger is connected with an outlet of a final-effect waste steam pipeline; a steam outlet of the heat exchanger is connected with an air inlet of a vacuum pump; a condensation water outlet of the heat exchanger is connected with a water inlet of a condensation water tank; a water outlet of the condensation water tank is connected with a water inlet of a condensation water pump; a water discharging opening of the water collection chamber located at the bottom of the shell is connected with a water inlet of the spraying pipe through a circulating water pump. The indirect heat exchange and evaporation type condensation system of the final-effect waste steam of the concentration evaporator system is compact and reasonable in structure; two processes of condensing the final-effect waste steam of the conventional evaporator system and cooling the circulating water are combined into one process; one device is capable of completing two operation processes of condensing the waste steam and cooling the circulating water; the consumption of the circulating cooling water is greatlyreduced; the indirect heat exchange and evaporation type condensation system is low in power consumption and easy to control and operate during operating, has great economic and social benefits, andhas good application prospects.

Description

Technical field [0001] The invention relates to an indirect heat exchange evaporative condensing system, in particular to an indirect heat exchange evaporative condensing system for concentrating the last effect of the evaporator system. Background technique [0002] At present, for the condensation of the final effect flash of the concentrated evaporator system, low temperature water is generally used to cool and condense through a direct water cooler or an indirect condenser. The cooling method of the direct water cooler is that the water directly contacts the flood steam to condense the steam, so that the condensed water and the cooling water will be mixed together, and the cooling water will be contaminated; the cooling method of the indirect condenser is the low temperature water indirect heat exchange through the condenser to transfer the steam Condensation, the condensed water does not contact the cooling water, and the cooling water is not polluted. [0003] Whether using ...

AI Technical Summary

Problems solved by technology

However, since the steam condensation releases the latent heat of phase change of water, the heat absorbed by cold water is the sensible heat of water temperature rise, which makes the sensible heat per unit weight of water much smaller than the latent heat of water, so the demand for cooling water is very high. Large, resulting in a large amount of circulating water and the power required for transportation. For this reason, it is necessary to configure larger cooling towers, hot water pools, cold water pools, pumping stations, etc., resulting in higher operating costs and investment costs.

Images