Boiler make-up water treatment system and treatment method in power station

Abstract

The invention discloses a boiler make-up water treatment system and method in a power station. The boiler make-up water treatment system comprises a reverse osmosis pretreatment device, a first-stage reverse osmosis device, an EDI device, a demineralized water tank and a membrane degassing device, wherein the membrane degassing device is connected with the first-stage reverse osmosis device, the back end of the membrane degassing device is connected with an intermediate water tank, the back end of the intermediate water tank is connected with a reverse osmosis water production pump, the front end of the EDI device is connected with the reverse osmosis water production pump, the back end of the EDI device is connected with the demineralized water tank, the back end of the reverse osmosis pretreatment device sequentially passes through a pipeline mixer, a security filter and a high-pressure pump to be connected with the first-stage reverse osmosis device, the front end of the reverse osmosis pretreatment device is connected with a raw water pump, the membrane degassing device is connected with a vacuum pump, the EDI device is connected with a washing backwater pipeline and a clear water supply pipeline and valve switches are arranged on the pipelines. The boiler make-up water treatment system disclosed by the invention has the advantages of low investment, small land occupation, low power consumption and low production cost, is capable of reducing the power consumption and the investment of the water treatment system and can improve economic benefits.

Description

technical field [0001] The invention relates to the technical field of power plant boiler equipment, in particular to a power plant boiler make-up water treatment system and treatment method. Background technique [0002] With economic development and environmental protection requirements, in order to reduce acid and alkali consumption in boiler feed water treatment systems in the prior art, many adopt EDI (electrical desalination) technical solutions, which generally use "two-stage reverse osmosis" produced water as EDI Water intake, its main technological process is: raw water → raw water pump → reverse osmosis pretreatment → primary security filter → primary high pressure pump → primary reverse osmosis device → carbon dioxide removal device → primary intermediate water tank → primary reverse osmosis Product water pump → (dosing NaOH) Secondary security filter → Secondary high pressure pump → Secondary reverse osmosis device → Secondary intermediate water tank → Secondary ...

AI Technical Summary

Problems solved by technology

The defect of this technical solution in the prior art is that no matter the water quality is good or bad, this technological process must be adopted just for the sake of safety, resulting in high investment and power consumption of the water treatment system, which increases the production cost

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