a desulfurization tower

Abstract

The invention provides a desulfurizing tower, and belongs to the technical field of chemical engineering equipment. A cyclone separator, a liquid distributor, multi-stage fluid-air exchangers, an air distributor, a demister and a liquid colleting chamber are arranged in a desulfurizing tower body from top to the bottom, the fluid-air exchanger comprises a filler pressing plate, a filler layer, a filler supporting layer and a QYD mass transfer structure from top to the bottom; the QYD mass transfer structure comprises a bubble re-distributor and a tower tray; the bubble re-distributor is in a cavity structure and is composed of an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are perpendicular to the tower tray, vent holes are distributed on the surface circumference of the air outlet pipe, and the height of the vent hole is less than the upper edge of the air inlet pipe; a liquid-descending plate is arranged between two fluid-air exchangers, and connected with an overflow weir, the overflow weir is respectively arranged at two ends of the multi-stage fluid-air exchanger, the liquid inlet is connected with the liquid distributor. The desulfurizing tower disclosed by the invention has high desulfurizing efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment, and in particular relates to a desulfurization tower. Background technique [0002] The role of the desulfurization tower is to remove hydrogen sulfide in the gas. For the metallurgical industry, it can reduce the sulfur content in molten iron. For city gas, it can improve the quality of gas supply. [0003] The Chinese patent with the application number 200710055816.4 discloses a highly efficient gas-liquid mass transfer device, which utilizes the characteristics of rapid chemical reaction between hydrogen sulfide and alkali solution, and uses direct gas-liquid contact to make dynamic contact between gas and liquid , The contact area between gas and liquid is greatly increased, so that the gas and liquid can be fully mixed and contacted in a very short time, and the purification degree of the gas is improved. But this device also has problems. At first, the liquid-holding layer on th...

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Problems solved by technology

But this device also has problems. At first, the liquid-holding layer on the tray is higher than the height of the inlet pipe because of the height of the part of the gas outlet. The phase grabs the gas phase channel and enters the lower tray, causing the system resistance to increase, and at the same time, the liquid holding layer on the tray is insufficient, which affects the desulfurization benefit.

Secondly, the original arrangement of air outlets and outlet pipes are arranged horizontally, and the arrangement of air outlets is arranged in a line. The distribution in the tower is not good, the distribution is uneven, and there are dead corners around; in addition, the liquid-holding layer on the original tray is empty. In this way, the bubbles are prone to gather during the rising process, which reduces the gas-liquid contact interface and affects the desulfurization efficiency.

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