CN210303162U - Multifunctional desulfurization dust removal equipment - Google Patents

Abstract

The utility model belongs to the technical field of flue gas desulfurization, a multi-functional desulfurization dust collecting equipment is disclosed, including the flue main, the sack cleaner, desulfurizer injection apparatus and desulfurizing tower, the air inlet of sack cleaner is connected to the flue main, the top of desulfurizing tower is provided with the flue gas entry, the gas vent of sack cleaner is provided with first pipeline, desulfurizer injection apparatus is used for spouting sodium bicarbonate powder into first pipeline, sodium bicarbonate water solution is contained to the bottom of desulfurizing tower, first pipeline and the flue gas entry linkage of desulfurizing tower, and in inserting the sodium bicarbonate water solution of desulfurizing tower, the desulfurizing tower is equipped with the water filling valve that is used for adding sodium bicarbonate water solution, the bottom of desulfurizing tower is equipped with the outlet. This device loops through sack cleaner, desulfurizer drying and flue gas entering sodium bicarbonate aqueous solution etc. and carries out multistage purification treatment to the flue gas, and desulfurization dust collection efficiency is high, and sodium bicarbonate powder is direct to be mixed with the flue gas, compares with spraying solution, and is low to the requirement of equipment to reaction efficiency is fast.

Description

Multifunctional desulfurization dust removal equipment

Technical Field

The utility model relates to a flue gas desulfurization technical field specifically is a multi-functional desulfurization dust collecting equipment.

Background

In the industrial production of designing furnaces and kilns, there are many problems related to flue gas desulfurization and dust removal, and in order to make the gas-liquid fully react and achieve the purposes of improving desulfurization efficiency and effectively controlling flue gas parameters, a flue gas desulfurization tower needs to be matched with a desulfurizer spray device. Traditional desulfurization spray set utilizes pump and pipeline to promote the desulfurizer solution to spray by the shower nozzle through the pipeline, makes it contact with the flue gas inside the desulfurizing tower, plays the effect of increase and constantly alternate the double-phase contact surface of gas-liquid, keeps the high effective desulfurizer concentration relatively of contact surface to impel the reaction constantly to go on to the orientation of desulfurization, remove dust to the flue gas simultaneously.

However, the traditional desulfurization and dust removal equipment has the defects that the contact surface of the spraying device and the flue gas is small, the flue gas containing sulfur dioxide is not fully absorbed at the spraying layer, the desulfurization and dust removal efficiency is low, and the cost is overhigh.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multi-functional desulfurization dust collecting equipment, the equipment desulfurization dust collection efficiency who solves current desulfurization dust removal is lower, problem with too high costs.

The utility model provides a basic scheme that: the utility model provides a multi-functional desulfurization dust collecting equipment, includes flue duct, sack cleaner, desulfurizer injection apparatus and desulfurizing tower, the air inlet of sack cleaner is connected to the flue duct, the top of desulfurizing tower is provided with the flue gas entry, the gas vent of sack cleaner is provided with first pipeline, desulfurizer injection apparatus is used for spouting sodium bicarbonate powder into first pipeline, sodium bicarbonate water solution is contained to the bottom of desulfurizing tower, first pipeline and the desulfurizing tower's of first pipelineThe flue gas inlet is connected with the flue gas inlet and is inserted into the sodium bicarbonate water solution of the desulfurizing tower, the desulfurizing tower is provided with a water adding valve for adding the sodium bicarbonate water solution, and the bottom of the desulfurizing tower is provided with a water outlet.

Working principle of basic scheme: boiler flue gas enters a bag-type dust collector through a main flue, because of the rapid expansion of the gas volume, a part of coarse dust particles fall into an ash bucket due to inertia or natural sedimentation and the like, the rest most of dust particles rise into a bag chamber along with the air flow, the dust particles are retained outside a filter bag after being filtered by the filter bag, the filtered gas enters a first pipeline through an exhaust port, meanwhile, a desulfurizer spraying device sprays sodium bicarbonate powder into the first pipeline, the sodium bicarbonate is activated under the action of high-temperature flue gas, a microporous structure is formed on the surface of the sodium bicarbonate, the flue gas in the first pipeline is fully contacted with the activated sodium bicarbonate to generate chemical reaction, sulfur dioxide and other acid media in the flue gas are absorbed and purified, the desulfurized and dried sodium sulfate byproduct enters a sodium bicarbonate aqueous solution along with the air flow, and the sulfur dioxide which is not fully absorbed in the first pipeline is desulfurized in the sodium bicarbonate aqueous, and the wastewater after a series of reactions is discharged from the water discharge port.

The basic scheme has the advantages that: (1) the device sequentially performs multi-stage purification treatment on the flue gas through the bag-type dust remover, the drying of the desulfurizer and the introduction of the flue gas into the sodium bicarbonate aqueous solution, and the like, so that the desulfurization and dust removal efficiency is high; (2) the sodium bicarbonate powder of this device is direct to be mixed with the flue gas, compares with spraying solution, and is low to the requirement of equipment to reaction efficiency is fast.

Further, the method can be used for preparing a novel materialThe utility model discloses a desulfurizing tower, the outlet of desulfurizing tower has the evaporimeter through the pipe connection, the evaporimeter is connected with the reaction chamber, the top of reaction chamber has the reinforced storehouse that is equipped with ammonium bicarbonate through the pipe connection, the reaction chamber is provided with filter equipment, filter equipment is used for carrying out solid-liquid separation with the material after sodium sulfate and the ammonium bicarbonate reaction.

Through the setting, the waste water that produces after this device is removed dust to the desulfurization is dried, obtains the sodium sulfate, adds ammonium bicarbonate again, and sodium sulfate and ammonium bicarbonate are prepared into solid sodium bicarbonate to produce the ammonium sulfate solution, but ammonium bicarbonate circulation reuse, and the fertilizer can be made to the ammonium sulfate solution, or continue to process into potassium sulfate and other chemical fertilizer products, has reduced secondary pollution, has improved economic benefits.

Further, the method can be used for preparing a novel materialThe desulfurizer spraying device comprises a desulfurizer chamber for placing sodium bicarbonate powder, the bottom of the desulfurizer chamber is connected with a second pipeline, a blower is arranged on the second pipeline, the free end of the second pipeline is provided with a plurality of branch pipes, the free end of each branch pipe extends into the first pipeline, and the free end of each branch pipe is provided with a nozzle.

Through the setting, a plurality of nozzles spout sodium bicarbonate powder into first pipeline, carry out the desulfurization to the flue gas to guarantee sodium bicarbonate powder homodisperse in the pipeline, improve its and sulfur dioxide's combination probability, improved desulfurizer injection apparatus to flue gas desulfurization's efficiency.

Further, the method can be used for preparing a novel materialAnd the pipe wall part of the first pipeline inserted into the water solution is provided with a plurality of through holes.

Through the arrangement, sulfur dioxide in the flue gas is more uniformly dissolved in water and reacts with sodium bicarbonate, so that the desulfurization and dust removal effects of the sodium bicarbonate water solution on the flue gas are improved.

Further, the method can be used for preparing a novel materialThe first pipeline is obliquely arranged, and the desulfurizing tower is positioned on the relatively lower side of the first pipeline.

Through the arrangement, sodium sulfate solid generated after the reaction of sodium bicarbonate and sulfur dioxide enters the desulfurizing tower under the driving of flue gas, and the sodium sulfate solid is prevented from being adsorbed at the bottom of the inner wall of the first pipeline to block the pipeline.

Drawings

FIG. 1 is a schematic structural view of a multifunctional desulfurization and dust removal device of the present invention.

Detailed Description

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a main flue 1, a bag-type dust collector 2, a first pipeline 3, a desulfurizer spraying device 4, a desulfurizer chamber 401, a second pipeline 402, a nozzle 403, a blower 404, a desulfurizing tower 5, a through hole 6, a water adding valve 7, an evaporator 8, a reaction chamber 9, a filtering device 10 and a feeding bin 11.

The embodiment is shown in fig. 1, a multifunctional desulfurization and dust removal device, which comprises a main flue 1, a bag-type dust remover 2, a desulfurizer injection device 4 and a desulfurization tower 5, wherein the main flue 1 is hermetically connected with an air inlet of the bag-type dust remover 2, an air outlet of the bag-type dust remover 2 is hermetically connected with an inclined first pipeline 3, a flue gas inlet is formed in the top of the desulfurization tower 5, and the right side of the two ends of the first pipeline 3, which are relatively lower, is hermetically connected with the flue gas inlet of the desulfurization tower 5.

The desulfurizer spraying device 4 comprises a desulfurizer chamber 401 for placing sodium bicarbonate powder, the bottom of the desulfurizer chamber 401 is connected with a second pipeline 402, a blower 404 is arranged on the second pipeline 402, the free end of the second pipeline 402 is provided with a plurality of branch pipes, the free end of each branch pipe sequentially extends into the first pipeline 3, the free end of each branch pipe is provided with a nozzle 403, the blower 404 pushes the sodium bicarbonate powder to move to the nozzle 403, and the sodium bicarbonate powder is sprayed into the first pipeline 3 from the nozzle 403.

The bottom of a desulfurizing tower 5 is filled with a sodium bicarbonate water solution, a first pipeline 3 is connected with a flue gas inlet of the desulfurizing tower 5 and then is further inserted into the sodium bicarbonate water solution of the desulfurizing tower 5, a plurality of through holes 6 are formed in the pipe wall part of the first pipeline 3 inserted into the water solution, a water adding valve 7 for adding the sodium bicarbonate water solution is arranged on the left side of the desulfurizing tower 5, a water outlet is also formed in the bottom of the desulfurizing tower 5, the water outlet of the desulfurizing tower 5 is connected with an evaporator 8 through a pipeline, a control valve is arranged on the pipeline between the evaporator 8 and the water outlet of the desulfurizing tower 5 and used for controlling the amount of wastewater entering the evaporator 8 each time, the evaporator 8 adopts an MVR evaporator produced by poly-American drying, a reaction chamber 9 is arranged behind the evaporator 8, the evaporator 8 is connected with the reaction chamber 9 through a conveying belt and used for conveying crystals produced by the evaporator 8 to the reaction chamber 9, the top of reaction chamber 9 has the storehouse 11 that adds of being equipped with ammonium bicarbonate through the pipe connection, and is provided with control flap on the pipeline to the volume that control ammonium bicarbonate got into reaction chamber 9, reaction chamber 9 are provided with filter equipment 10, and filter equipment 10 is including the filter screen that is located reaction chamber 9 middle part, and filter equipment 10 is used for carrying out solid-liquid separation with the solid sodium bicarbonate and the ammonium sulfate solution of the production after sodium sulfate and the ammonium bicarbonate react.

When the boiler flue gas enters the bag-type dust collector 2 through the main flue 1, because of the rapid expansion of the gas volume, a part of coarse dust particles fall into an ash bucket due to inertia or natural sedimentation and the like, the rest most of dust particles rise along with the gas flow and enter a bag chamber, the dust particles are retained outside the filter bag after being filtered by the filter bag, the filtered gas enters the first pipeline 3 through an exhaust port, meanwhile, the desulfurizer spraying device 4 sprays sodium bicarbonate powder into the first pipeline 3 through a plurality of nozzles 403, the sodium bicarbonate is activated under the action of high-temperature flue gas, a microporous structure is formed on the surface, the flue gas in the first pipeline 3 is fully contacted with the activated sodium bicarbonate to carry out chemical reaction, the sulfur dioxide and other acid media in the flue gas are absorbed and purified, the desulfurized and dried sodium sulfate byproduct and the unreacted sodium bicarbonate powder enter a sodium bicarbonate water solution along with the gas flow, the sulfur dioxide which is not fully absorbed in the first pipeline 3 is desulfurized in the sodium bicarbonate water solution, the wastewater is continuously discharged to the evaporator 8 from the water outlet, the evaporator 8 evaporates and dries the wastewater to obtain sodium sulfate, the sodium sulfate is conveyed to the reaction chamber 9 through the conveyer belt, then the ammonium bicarbonate is added from the feeding bin, the sodium sulfate and the ammonium bicarbonate react to generate solid sodium bicarbonate, and an ammonium sulfate solution is generated, the ammonium bicarbonate can be recycled, and the ammonium sulfate solution can be prepared into fertilizer or continuously processed into potassium sulfate and other fertilizer products.

The above embodiments of the present invention are only examples, and the common knowledge of the known specific structures and characteristics in the schemes is not described too much, it should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, and these should be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (5)

1. The utility model provides a multi-functional desulfurization dust collecting equipment, includes flue duct, sack cleaner, desulfurizer injection apparatus and desulfurizing tower, its characterized in that: the utility model discloses a desulfurization tower, including flue, desulfurizing tower, desulfurizer, desulfurizing tower, flue gas inlet, desulfurizing tower are equipped with the water valve that adds for adding sodium bicarbonate aqueous solution, the top of desulfurizing tower is provided with the flue gas entry, the gas vent of flue-bag dust remover is provided with first pipeline, desulfurizer injection apparatus is used for spouting sodium bicarbonate powder into first pipeline, the bottom of desulfurizing tower contains sodium bicarbonate aqueous solution, first pipeline is connected with the flue gas entry of desulfurizing tower, and in the sodium bicarbonate aqueous solution of inserting the desulfurizing tower, the desulfurizing tower is equipped.

2. The multifunctional desulfurization and dust removal equipment of claim 1, wherein: the outlet of desulfurizing tower has the evaporimeter through the pipe connection, the evaporimeter is connected with the reaction chamber, there is the storehouse that adds of the ammonium bicarbonate at the top of reaction chamber through the pipe connection, the bottom of reaction chamber is provided with filter equipment, filter equipment is used for carrying out solid-liquid separation with the material after sodium sulfate and the ammonium bicarbonate reaction.

3. The multifunctional desulfurization and dust removal equipment of claim 1, wherein: the desulfurizer injection device comprises a desulfurizer chamber for placing sodium bicarbonate powder, the bottom of the desulfurizer chamber is connected with a second pipeline, a blower is arranged on the second pipeline, the free end of the second pipeline is provided with a plurality of branch pipes, the free end of each branch pipe extends into the first pipeline, and the free end of each branch pipe is provided with a nozzle.

4. The multifunctional desulfurization and dust removal equipment of claim 1, wherein: the pipe wall part of the first pipeline inserted into the water solution is provided with a plurality of through holes.

5. The multifunctional desulfurization and dust removal equipment of claim 1, wherein: the first pipeline is obliquely arranged, and the desulfurizing tower is positioned on the relatively lower side of the first pipeline.

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