CN205164417U - Purification unit of high temperature flue gas - Google Patents

Abstract

The utility model provides a purification unit of high temperature flue gas belongs to air purification equipment technical field. It is low that it has solved current air purification device availability, purifies not thoroughly to wait technical problem. This purification unit of high temperature flue gas includes admission line, reaction tower, cyclone and sack cleaner, and the bottom of reaction tower is equipped with muzzle spray gun up, and the admission line is connected with the spray gun, and the upper end of reaction tower is connected with cyclone, and cyclone's upper end is said through gas flow tube with the sack cleaner and is connected, is equipped with star type unloading valve on gas flow tube says, the ji chenkou of sack cleaner is connected with dust collector, and the sack cleaner is linked together with the chimney through the pipeline of giving vent to anger. The utility model provides a purification unit can high -efficiently move, and passes through the more thorough of A number of processes messenger gas cleaning.

Description

A purification treatment device for high temperature flue gas

technical field

The utility model belongs to the technical field of air purification equipment and relates to a purification treatment device for high-temperature flue gas.

Background technique

With the development of social industrialization, environmental pollution is also becoming more and more serious. Boiler coal burning and garbage incineration will bring a lot of smoke, which contains trace substances that were not there before. Adverse effects and hazards to people, animals, plants, articles and materials. When the concentration of pollutants in the atmosphere reaches a harmful level, it will destroy the ecological system and the conditions for the normal survival and development of human beings. Before the flue gas is discharged, it needs to be treated without pollution.

my country's patent (notification number: CN203790826U; publication date: 2014-08-27) discloses a high-efficiency flue gas purification device. The bottom of the flue gas purification device is provided with an oxidation slurry pool, and the upper part is an absorption reaction zone. Slurry pipe and nozzle, the spray pipe is set above the oxidation reaction tank, the nozzle is set on the spray pipe, the outlet of the nozzle is set vertically upward, the spray pipe is connected to the outlet main pipe of the slurry circulation pump, and the flue gas purification device includes a The first-level flue gas purification device and the second-level flue gas purification device, the oxidation reaction pool at the bottom of the first-level flue gas purification device and the second-level flue gas purification device are connected to each other, the upper part of the first-level flue gas purification The top of one side of the gas purification device is provided with a smoke inlet pipe, and the top of one side of the secondary flue gas purification device is provided with a smoke exhaust pipe.

Usually the flue gas is produced after high-temperature incineration, and the flue gas contains a large amount of heat. When it is processed at the first time, it is necessary to ensure the high temperature resistance of the purification device. In addition, the flue gas purification device disclosed in the above-mentioned patent treats The efficiency is low, and the treatment of pollutants is not thorough enough.

Contents of the invention

The utility model aims at the above-mentioned problems existing in the existing technology, and provides a high-temperature flue gas purification treatment device. The technical problem to be solved by the utility model is: how to ensure efficient and thorough treatment of the high-temperature flue gas.

The purpose of this utility model can be achieved through the following technical solutions:

A purification treatment device for high-temperature flue gas, comprising an air inlet pipe, a reaction tower, a cyclone separator and a bag filter, characterized in that, the bottom of the reaction tower is provided with a spray gun with the muzzle facing upwards, and the air inlet pipe It is connected with the spray gun, the upper end of the reaction tower is connected with the cyclone separator, and the upper end of the cyclone separator is connected with the bag filter through the air flow pipeline, and the air flow pipeline is provided with a star Ash unloading valve; the dust collecting port of the bag filter is connected with a dust removal device, and the bag filter is connected with the chimney through an air outlet pipe.

The principle is as follows: In this technical solution, substances that can desulfurize and denitrify the flue gas are placed in the reaction tower, such as CaCO ₃ , MgO, Na ₂ SO ₃ , NH ₃ and catalysts. The high-temperature flue gas enters the The chemical reaction is carried out in the reaction tower to desulfurize and denitrify; the bottom of the reaction tower is equipped with a spray gun with the muzzle facing upwards, and the flue gas is sprayed upward through the spray gun to accelerate the flow of the flue gas, and at the same time diffuse more evenly into the reaction tower to produce sufficient Chemical reaction, improve the efficiency of chemical reaction, improve the effect of desulfurization and denitrification. Then the flue gas enters the cyclone separator for preliminary separation, so that the solid particles or liquid droplets with large inertial centrifugal force are separated from the outer wall, and deposited and discharged; the preliminary purified flue gas enters the bag filter for further dust removal. The separated dust falls off and is removed by the dust removal device below, and can be solidified as a by-product. The purified flue gas is discharged from the chimney through the outlet pipe. The purification treatment device in the technical solution can operate efficiently, and the flue gas can be purified more thoroughly through multiple processes.

In the above-mentioned high-temperature flue gas purification treatment device, the dust removal device includes a screw conveyor and a buried scraper conveyor arranged under the bag filter, and the dust in the bag filter can flow in through the screw conveyor. to the buried scraper conveyor. The automatic transportation of dust in the bag filter can be realized through the screw conveyor one and the buried scraper conveyor.

In the above-mentioned purification treatment device for high-temperature flue gas, the airflow pipeline is further connected with an activated carbon bin, and the activated carbon bin is provided with activated carbon. The flue gas can be further purified by the adsorption of activated carbon.

In the above-mentioned high-temperature flue gas purification treatment device, the bottom of the cyclone separator is provided with a feeder connected to the cyclone separator, the feeder is connected to the reaction tower, and the reaction A second screw conveyor is also connected to the bottom of the tower, and the second screw conveyor is connected to the buried scraper conveyor. The dust separated by the cyclone separator enters the buried scraper conveyor through the feeder, the reaction tower and the screw conveyor in order to realize the automatic transportation and removal of the dust.

In the above-mentioned high-temperature flue gas purification treatment device, an electric butterfly valve, a hot air blower and an induced draft fan are connected to the outlet pipe. The hot air blower and the induced draft fan ensure the smooth and rapid circulation of the flue gas and improve the purification efficiency; the electric butterfly valve is used to control the operation of the flue gas to ensure the purification effect.

Compared with the prior art, the medium and high temperature flue gas in the utility model undergoes chemical reaction desulfurization and denitrification in the reaction tower, then enters the cyclone separator for preliminary separation, and then enters the bag filter for further dust removal, and the separated dust falls off and passes through the bottom The dust removal device is removed, and the purification treatment device operates efficiently, and the flue gas is purified more thoroughly through multiple processes.

Description of drawings

Fig. 1 is a structural schematic diagram of the purifying treatment device.

In the figure, 1. Intake pipeline; 2. Reaction tower; 3. Cyclone separator; 4. Bag filter; 5. Spray gun; Screw conveyor one; 82, screw conveyor two; 83, buried scraper conveyor; 9, chimney; 10, outlet pipe; 11, activated carbon warehouse; 12, feeder; 13, electric butterfly valve; 14, hot air blower; 15. Induced fan.

detailed description

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the utility model. Obviously, the described The embodiments are only some of the embodiments of the present utility model, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

As shown in Fig. 1, the purifying treatment device of this high-temperature flue gas comprises an intake pipe 1, a reaction tower 2, a cyclone separator 3 and a bag filter 4, and the bottom of the reaction tower 2 is provided with a spray gun 5 with the muzzle facing upwards, and The air pipe 1 is connected with the spray gun 5, the upper end of the reaction tower 2 is connected with the cyclone separator 3, the upper end of the cyclone separator 3 is connected with the bag filter 4 through the air flow pipe 7, and the air flow pipe 7 is equipped with a star-shaped ash discharge Valve 6; the dust collection port of the bag filter 4 is connected with a dust removal device 8, and the bag filter 4 is connected to the chimney 9 through the outlet pipe 10; a substance capable of desulfurizing and denitrifying the flue gas is placed in the reaction tower 2, such as CaCO _3. MgO, Na ₂ SO ₃ , NH ₃ and catalysts, etc., the high-temperature flue gas enters the reaction tower 2 through the intake pipe 1 for chemical reaction, thereby desulfurization and denitrification; The spray gun 5, the flue gas is ejected upward through the spray gun 5, the flow of the flue gas is accelerated, and at the same time, it is more evenly diffused into the reaction tower 2 for sufficient chemical reaction, improving the efficiency of the chemical reaction, and improving the effect of desulfurization and denitrification. Then the flue gas enters the cyclone separator 3 for preliminary separation, so that the solid particles or liquid droplets with large inertial centrifugal force are separated from the outer wall, and deposited and discharged; the preliminary purified flue gas enters the bag filter 4 for further purification. Dust removal, the separated dust falls off and is removed by the dust removal device 8 below, and can be solidified as a by-product. The purified flue gas is discharged from the chimney 9 through the outlet pipe 10 . The air outlet pipeline 10 is connected with an electric butterfly valve 13 , a hot air blower 14 and an induced draft fan 15 . The hot air blower 14 and the induced draft fan 15 ensure the smooth and fast circulation of the flue gas and improve the purification efficiency; the electric butterfly valve 13 is used to control the operation of the flue gas to ensure the purification effect. The purification treatment device in the technical solution can operate efficiently, and the flue gas can be purified more thoroughly through multiple processes.

As shown in Figure 1, the dust removal device 8 includes a screw conveyor 81 and a buried scraper conveyor 83 arranged under the bag filter 4, and the dust in the bag filter 4 can flow into the buried scraper through the screw conveyor 1 81 On conveyor 83. The automatic delivery of dust in the bag filter 4 can be realized by screw conveyor one 81 and buried scraper conveyor 83; the airflow duct 7 is also connected with an activated carbon bin 11, and activated carbon is arranged in the activated carbon bin 11, which can be absorbed by the activated carbon. Further purify the flue gas; the bottom of the cyclone separator 3 is provided with a feeder 12 communicated with the cyclone separator 3, the feeder 12 is communicated with the reaction tower 2, and the bottom of the reaction tower 2 is also connected with a screw conveyor 2 82 , Screw conveyor two 82 is connected with buried scraper conveyor 83. The dust separated by the cyclone separator 3 enters the buried scraper conveyor 83 through the feeder 12, the reaction tower 2 and the second screw conveyor 82 in order to realize the automatic transportation and removal of the dust.

Under the premise of not departing from the essence of the present invention, those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or replace them in similar ways, but will not deviate from The spirit of the present invention may go beyond the scope defined by the appended claims.

Claims (5)

1. a purifying treatment device for high-temperature flue gas, comprising an inlet pipe (1), a reaction tower (2), a cyclone separator (3) and a bag filter (4), it is characterized in that the reaction tower (2 ) is provided with a spray gun (5) with a muzzle facing upwards, the air inlet pipe (1) is connected with the spray gun (5), and the upper end of the reaction tower (2) is connected with the cyclone separator (3 ), the upper end of the cyclone separator (3) is connected with the bag filter (4) through the airflow pipe (7), and the airflow pipe (7) is provided with a star-shaped ash discharge valve (6) ; The dust collecting port of the bag filter (4) is connected with a dust removal device (8), and the bag filter (4) is connected with the chimney (9) through the outlet pipe (10). 2. In the purification treatment device of high-temperature flue gas according to claim 1, it is characterized in that the dust removal device (8) comprises a screw conveyor (81) and a buried scraper arranged below the bag filter (4) Plate conveyor (83), the dust in the bag filter (4) can flow into the buried scraper conveyor (83) through screw conveyor one (81). 3. In the purification treatment device for high-temperature flue gas according to claim 1 or 2, it is characterized in that an activated carbon bin (11) is also connected to the airflow pipe (7), and the activated carbon bin (11) is equipped with There is activated carbon. 4. in the purifying treatment device of high-temperature flue gas according to claim 2, it is characterized in that, the bottom of described cyclone separator (3) is provided with the feeder that communicates with described cyclone separator (3) ( 12), the feeder (12) is communicated with the reaction tower (2), and the bottom of the reaction tower (2) is also connected with a screw conveyor two (82), and the screw conveyor two (82) ) is connected with the buried scraper conveyor (83). 5. In the purification treatment device for high-temperature flue gas according to claim 1 or 2, it is characterized in that an electric butterfly valve (13), a hot air blower (14) and an induced draft fan (15) are connected to the outlet pipe (10). ).