System and method for realizing high-flow water replenishing and high-efficiency deoxidizing of industrial heat supply unit

Abstract

The invention discloses a system and a method for realizing the high-flow water replenishing and the high-efficiency deoxidizing of an industrial heat supply unit. The system comprises a boiler, a high pressure cylinder, an intermediate pressure cylinder, a low pressure cylinder and an external deoxidization device, wherein boiler exhaust steam is connected with an inlet of the high pressure cylinder; an inlet of the external deoxidization device is connected with a supplementary water booster pump; an inlet of the supplementary water booster pump is connected with a desalting water tank; an outlet of the external deoxidization device is connected with the booster pump; and an outlet of the booster pump is divided into two paths: one path is connected to an outlet of a second low pressureheater through a first valve group, and the other path is connected to an outlet of a third low pressure heater through a second valve group. According to the system and the method for realizing the high-flow water replenishing and the high-efficiency deoxidizing of the industrial heat supply unit provided by the invention, the external deoxidization device adopts an integrated structure, so thatthe requirements on water replenishing and deoxidizing after the high-flow industrial steam supply of a coal-fired generating unit are met; a host computer can keep high deoxidizing efficiency in a wide load change range section; and the condensation water temperature is increased, an inlet of one class low pressure heater can be flexibly accessed, and the gradient high-efficiency utilization of energy is realized.

Description

【Technical field】 [0001] The invention relates to a system and method for realizing large-flow water replenishment and high-efficiency deoxygenation of industrial heating units. 【Background technique】 [0002] With the continuous and in-depth advancement of air pollution prevention and control work, the scattered coal-fired oil-fired boiler rooms with high pollution and high energy consumption are gradually shut down, and steam-consuming enterprises are encouraged to settle in newly-built industrial parks close to coal-fired units. The centralized supply of steam in the steam-using industrial park will help control the total amount of coal and fuel consumption in the region. Affected by factors such as steam supply distance, production process, and investment, the condensed water corresponding to industrial steam supply will not be recovered. In order to maintain the steam-water balance of coal-fired power generation heating units, an equal amount of desalted water needs to ...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the atomization deoxygenation technology in the prior art cannot guarantee a good deoxygenation effect under the condition of large-flow water replenishment, and to provide a system and method for realizing large-flow water replenishment and efficient deoxygenation of industrial heating units, which can Realize the good deoxygenation effect of the unit's high-flow low-temperature desalination make-up water

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