Venturi cleaner, cleaning system comprising Venturi cleaner and application

Abstract

The invention provides a Venturi cleaner, comprising a nozzle and a throat tube; water outlets on the nozzle are arranged in 3 layers along the direction in which a water flow travels; and an angel of the water outlet direction on the first layer of a water outlet with respect to an axis of the Venturi tube is 45 degrees, an angel of the water outlet direction on the second layer of the water outlet with respect to an axis of the Venturi tube is 90 degrees, and an angel of the water outlet direction on the third layer of the water outlet with respect to an axis of the Venturi tube is between 20 and 30 degrees. The invention further provides a cleaning system comprising the Venturi cleaner. The invention optimizes, with respect to the flush and leakage phenomena caused by the Venturi cleaner, the structure of the Venturi cleaner, changes the direction of the water outlet holes of the Venturi nozzle, intersects the water columns ejected by the water holes for intersecting with one another to reduce flushing on the throat tube, and increases effective contacts with the coal gas to improve the cleaning effect. Furthermore, by adding 5 water outlets with a smaller angle at an end surface of the nozzle, water passing through the water outlets forms a water film on an inner surface of the throat tube to improve the cleaning effect.

Description

technical field [0001] The invention belongs to the field of chemical equipment, and in particular relates to a gasification gas washing equipment and its application. Background technique [0002] The main effective components of the crude water gas produced by the gasification unit are hydrogen and carbon monoxide, a small amount of sulfides, nitrides, methane and slag. The crude water gas is in direct contact with water, and most of the fine particles carried in it are washed into the water, and the water gas without solid particles leaves the scrubber and is sent to the shift unit. [0003] The scrubbing equipment for scrubbing the crude water gas is connected to the gasification device through a Venturi scrubber, and the Venturi tube includes a constriction section, a throat pipe and a diffusion section. After the dust-laden gas enters the constriction section, the flow velocity increases and reaches the maximum value when it enters the throat. The washing liquid is a...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the venturi scrubber wash water is the black water in the washing tower pumped by the gray water circulating pump, because the black water in the washing tower contains solid content, alkali On the one hand, it is easy to cause the outlet hole of the Venturi nozzle to be blocked, which affects the washing effect of the Venturi nozzle; If it is above s, it is easy to cause the erosion and wear of the Venturi throat. If the wear reaches a certain level, it will cause leakage and affect the safe and stable operation of production.

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