High-efficiency low energy consumption desulfurized dust removing equipment

Abstract

The invention provides a desulfurization and dedusting device with high efficiency and low energy consumption, and the device comprises a settling tank, a mud collecting box, a circulating water pump and a water bath purifying box, wherein, the front part of the water bath purifying box is provided with a spraying room, the top part of the spraying room is provided with a water spraying pipe or aspraying head, the bottom part of the spraying room is provided with one or more groups of sieve tubes, each group of the sieve tubes is composed of a sieve plate and a plurality of honeycomb ducts, round holes are distributed on the sieve plate, the honeycomb ducts are correspondingly arranged in the round holes in a penetrating way, radial via holes are opened on the duct walls of the honeycombducts, the lower side of the sieve plate is provided with a water bath overflow box, the honeycomb ducts extend into the water bath overflow box, the settling tank is connected at the bottom part of the water bath purifying box, the mud collecting box is connected at the bottom part of the settling tank, the bottom part of the mud collecting box is provided with a thick slurry pump, the settling tank is internally provided with a water separation bucket, which divides the settling tank into a sewage area and a clear-water area, and the inlet of the circulating water pump communicates with theclear-water area of the settling tank. With the advantages of high efficiency, small occupied area, water saving and power saving, the whole body of the device adopts a modular structure, so that disassembly, transportation and maintenance are convenient, and the application scope is wide.

Description

technical field [0001] The invention relates to an industrial waste gas treatment device, in particular to desulfurization and dust removal equipment. Background technique [0002] Desulfurization and dust removal equipment is widely used in various industrial and mining enterprises to filter and purify various flue gases, harmful gases, dust gases and other industrial waste gases. [0003] The existing desulfurization and dust removal equipment is composed of a Venturi tube, an atomizer, a spray scrubber, and a sedimentation tank. section, the atomizer is installed on the upper part of the Venturi tube, the spray scrubber is set in the middle of the Venturi tube, the sedimentation tank is set at the bottom of the Venturi tube, and the exhaust gas flows from the top of the Venturi tube under the action of the induced draft fan. Entering, in the constriction section of the Venturi tube, the speed of the airflow increases dramatically as the cross-section shrinks. This high-s...

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Problems solved by technology

[0003] The existing desulfurization and dust removal equipment is composed of a Venturi tube, an atomizer, a spray scrubber, and a sedimentation tank. section, the atomizer is installed on the upper part of the Venturi tube, the spray scrubber is set in the middle of the Venturi tube, the sedimentation tank is set at the bottom of the Venturi tube, and the exhaust gas flows from the top of the Venturi tube under the action of the induced draft fan. Entering, in the constriction section of the Venturi tube, the speed of the airflow increases dramatically as the cross-section shrinks. This high-speed airflow impacts the water mist sprayed from the atomizer and foams. When it reaches the narrow throat section, the flow velocity reaches the maximum value. , the gas and liquid two-phase collision contact, the exhaust gas mixes with the water mist, and then enters the diffusion section of the Venturi tube, the flow rate gradually decreases, and finally enters the sedimentation tank to settle. The water bath process of this desulfurization and dust removal equipment is completed in the Venturi tube. The Venturi tube is a single tubular body with a large inner diameter, which is the only channel for the exhaust gas to enter the water bath. Under the action of the induced draft fan and gravity, the exhaust gas enters the Venturi tube at a very high speed, and the travel time in the Venturi tube is short. , the fine particles and harmful substances in the exhaust gas are often discharged from the bottom of the Venturi tube before they can fully contact, collide, impact, fuse, and neutralize with the water mist, so the water bath is not complete, the purification effect is poor, and the dust removal efficiency is low. Low

The Venturi tube is high in height and heavy in weight, inconvenient to install and disassemble, and difficult to transport. It must be used in conjunction with a large sedimentation tank, which brings great inconvenience to the construction. The sewage in the sedimentation tank cannot be recycled, and the water consumption Large, large amount of sewage, serious secondary pollution

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