Steam condensate heat exchange system with automatic dosing device

Abstract

The invention discloses a steam condensate heat exchange system with an automatic agent-feeding device, and belongs to the field of chemical processing. The steam condensate heat exchange system comprises a condenser, a condensate main pipe, a pump, the agent-feeding device, a control valve, condensate branch pipes and a heat exchanger, a steam inlet is formed in one end of the condensate main pipe, the condensate main pipe is sequentially communicated with the condenser and the pump from the steam inlet, the condensate main pipe connected with a water outlet end of the pump is communicated with one group of parallel condensate branch pipes, the heat exchanger is connected onto the condensate branch pipes, and terminals of the condensate branch pipes are mutually communicated and connected with a user side through one connecting pipeline. The opening of an agent-feeding control valve can be automatically adjusted in real time, and the steam condensate heat exchange system solves the problem that agents cannot be fed to a heat exchanger far away from the agent-feeding device due to different dosage flow directions.

Description

technical field [0001] The invention relates to a steam condensate heat exchange system, in particular to a steam condensate heat exchange system with an automatic dosing device. Background technique [0002] With the continuous development of industry, energy issues have been paid more and more attention by people. At present, the steam in many chemical plants is processed and utilized through recycling. However, the steam is condensed through the condenser, and the condensed water may contain O 2 , CO 2 and SiO 2 and other impurities, the dissolved oxygen in it is easy to cause corrosion of pipelines and equipment, and the SiO contained in the water 2 It is easy to form scale, and the CO dissolved in the condensed water 2 Formation of weak electrolyte H 2 CO 3 , H 2 CO 3 decomposed into H + and HCO 3 - , thus affecting the PH value of the steam and causing pipeline corrosion. [0003] The compressor unit has relatively high requirements on the steam, and the i...

AI Technical Summary

Problems solved by technology

In the existing technology, the dosing device is installed at the condensate branch pipe, and the medicine is added to each condensate branch pipe respectively. The dosing device is equipped with multiple branch pipes, and each branch pipe is equipped with a control valve. The position of the heater is different, and the flow direction of the drug amount is different, which may cause the problem that the heat exchanger far away from the dosing device cannot be filled.

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