Vapor condensed water recycling process and device for organic amine desulfurization system

Abstract

Disclosed is a vapor condensed water recycling process and device for an organic amine desulfurization system. Vapor is changed into high-temperature condensed water after utilized through a desulfurization and desorption system reboiler to enter a vapor condensed water pot and then is pumped to a heat exchanger. The temperature of the condensed water is decreased to 25-40 DEG C. The condensed water passing through the heat exchanger enters a low-temperature condensed water pot to be stored. Part of the condensed water in the low-temperature condensed water pot is sent to an ion exchanging purifying system to be used. The surplus part of the condensed water overflows to a soft water tank to be sent back into a water production station for recycling. The condensed water is recycled efficiently, the temperature of the condensed water is controlled accurately, the condensation effect is good, the temperature of the condensed water meets the requirement so as to be used directly, and the water production amount and cost are reduced greatly; and demineralized water is replaced with the condensed water, so that the water production amount of the demineralized water can be decreased by 28,800 t / year or above, the water production cost of the demineralized water can be decreased by 334,000 Yuan or above, the vapor condensed water recycling amount reaches up to 28,800 t / year, meanwhile, desulfurization production is not restricted by the demineralized water water-production system, and self-sufficiency is achieved.

Description

technical field [0001] The invention relates to the field of resource recycling, in particular to a process and device for recycling steam condensed water used in an organic amine desulfurization system. Background technique [0002] During the desulfurization process, the absorption and purification system needs desalted water with a conductivity below 5us / cm to remove ions in the water, and the chemical water preparation system often cannot provide desalted water stably. When the water supply is insufficient or the desalinated water preparation system is repaired, it will The soft water preparation system is used as the emergency water source, and the two channels of water use the same pipeline network, which will easily lead to the desulfurization system not being able to continuously start the purification process, and the conductivity of the water must be tested every time the purification is performed, even if this is done, there will still be soft water mixed in the pu...

AI Technical Summary

Problems solved by technology

[0004] The condensed water recovery system in the prior art is to make the condensed water discharged indefinitely from the heating equipment enter the open condensed water tank through the condenser, and finally discharge to nature. It causes waste of heat energy and condensed water, and the temperature of condensed water is high, so it cannot be used directly

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