Negative pressure deoxidizing system and process

• Main Authors: XIA LUBEI, XU XIANGYING, GUAN QINGLIN, GAO CHUNHAI, DONG XIAOHUI, GAO QUANKUN, REN PEIJIE, ZHANG ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 08.08.2023
• Subjects: CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a negative pressure deoxidizing system and process, and belongs to the technical field of deoxidizing of demineralized water. The system comprises a heating system, a deoxidizing system and a vacuumizing unit which are connected in sequence, wherein the vacuumizing unit comprises two stages of vacuumizing units which are connected in series. According to the invention, on the basis of the temperature of the demineralized water entering the deaerator, the control of the vacuum degree in the deaerator is realized through a liquid series vacuum-pumping process, so that the effect of effectively removing gases such as dissolved oxygen is achieved, and the energy consumption and the water vapor loss are reduced compared with the existing steam stripping on the basis of ensuring that the deaeration is qualified. 本发明公开了一种负压除氧系统及工艺，属于除盐水除氧技术领域。该系统包括依次连接的加热系统，除氧系统和抽真空单元，其中所述抽真空单元包括串联的两级抽真空单元。即本发明依据除盐水进除氧器的温度为基础，通过液体串联抽真空工艺来实现除氧器内部真空度的控制，以达到一个有效除去溶解氧等气体的作用，在保证除氧合格的基础上，较现有蒸汽汽提减少了能耗和水汽损失。