电厂烟气脱硫系统

Abstract

本申请涉及烟气脱硫技术领域，特别是涉及一种电厂烟气脱硫系统，包括，包括吸收塔，所述吸收塔顶部的排出口连接有排放管，所述排放管上设置有控制阀，还包括酸雾捕集组件，所述酸雾捕集组件设置于所述排放管，且位于所述控制阀与所述排出口之间，用于吸收残留酸雾；其中，所述酸雾捕集组件包括：吸收管、冷凝管以及酸雾捕集件，所述酸雾捕集件设置于所述吸收管内，并将所述吸收管分为冷凝腔和捕集腔，所述冷凝管螺旋盘绕于所述冷凝腔内，所述捕集腔内设置有酸雾吸收填料通过在控制阀上游设置酸雾捕集组件，从根本上解决了酸雾在控制阀表面冷凝挂壁的问题，从而延长了控制阀的使用寿命，降低了设备维护频率和运维成本。

Claims

1. A flue gas desulfurization system for a power plant, comprising an absorption tower, a discharge pipe connected to a discharge outlet at the top of the absorption tower, and a control valve provided on the discharge pipe, characterized in that, It also includes an acid mist collection component, which is disposed in the discharge pipe and located between the control valve and the discharge outlet, for absorbing residual acid mist; The acid mist collection assembly includes an absorption tube, a condenser tube, and an acid mist collection element. The acid mist collection element is disposed inside the absorption tube and divides the inner cavity of the absorption tube into a condensation chamber and a collection chamber. The condenser tube is spirally wound inside the condensation chamber, and the collection chamber is provided with acid mist absorption packing.

2. The system for flue gas desulphurization of a power plant according to claim 1, characterized in that, It also includes a condensate circulation section. The side wall of the absorption tube has a first clearance opening and a second clearance opening, and the first clearance opening is located above the second clearance opening. The water inlet pipe of the condensate tube passes through the second clearance opening and is connected to the water outlet of the condensate circulation section. The water outlet pipe of the condensate tube passes through the first clearance opening and is connected to the water inlet of the condensate circulation section.

3. The system for flue gas desulphurization of a power plant of claim 1, wherein, The inner wall of the absorption tube is provided with an upper limit plate and a lower limit plate, which are located at the discharge end and the feed end of the absorption tube, respectively. The acid mist collection element is disposed between the upper limit plate and the lower limit plate.

4. The power plant flue gas desulfurization system according to claim 3, characterized in that, The acid mist collection device includes a collection tube and an acid mist absorption filler. A mesh is provided at the bottom of the collection tube, and the acid mist absorption filler is filled inside the collection tube. The bottom of the collection tube is placed on the lower limiting plate, and the upper edge of the collection tube is mounted on the upper limiting plate.

5. The system for flue gas desulphurization of a power plant according to claim 4, characterized in that, The upper part of the collecting tube is provided with an overlapping part, and the collecting tube is mounted on the upper limit plate through the overlapping part. The lower limit plate is provided with a placement step, and the bottom of the collecting tube is placed on the placement step. The collecting tube, the absorption tube, the upper limit plate and the lower limit plate are sealed to form the condensation chamber.

6. The system for flue gas desulphurization of a power plant of claim 5, wherein, A handle is provided on the upper side of the overlapping part to facilitate removing the collection tube from the absorption tube.

7. The system for flue gas desulphurization of a power plant of claim 4, wherein, The upper inner wall of the collection tube is provided with several finned baffles, and the baffles are arranged alternately.

8. The system for flue gas desulphurization of a power plant according to claim 7, characterized in that, The baffle is inclined downwards in the direction away from the inner wall of the collecting tube.

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