CN206793306U - A kind of sack cleaner of effectively absorption coal tar - Google Patents

Abstract

The utility model discloses a bag dust collector which can effectively absorb coal tar. The box body includes a purification room, a dust removal room and a settling room from top to bottom. , the air inlet pipe is equipped with an air distribution plate, the upper end of the air inlet pipe is connected with an inclined air deflector, the settling chamber is equipped with a tar adsorption device, the dust removal chamber is equipped with a bag assembly, and a pulse blowback device is installed above the bag assembly. There is an air outlet on the side, and a high-efficiency filter in the clean room. When the utility model is used to remove dust from calcium carbide furnace gas, it can effectively absorb coal tar, improve the service life of the cloth bag, improve the dust removal efficiency of the cloth bag, reduce the maintenance cost, and improve the efficiency of the entire furnace gas purification system. The concentration of coal tar in the purified furnace gas is between Below 20mg/m3.

Description

A bag filter for effectively absorbing coal tar

technical field

The invention relates to the field of dust removal, in particular to a bag filter for effectively absorbing coal tar.

Background technique

The main component of calcium carbide furnace gas is carbon monoxide, and it also contains a small amount of hydrogen, tar, and dust. Due to the richness of tar, the purification of calcium carbide furnace gas has become a difficult problem in the industry. At present, the purification and utilization of calcium carbide furnaces mainly include three categories. The first category is to recycle the furnace gas by wet method; Reuse; a large-capacity and fully sealed calcium carbide furnace is used to support the gas-fired lime kiln (recovered furnace gas is used as fuel to produce lime for the production of calcium carbide), and after dry dust removal and purification of the furnace gas, a clean gas source is provided for use in the gas-fired kiln.

At present, the third type of calcium carbide furnace gas purification and utilization method is adopted. The dry dust removal system is a secondary cyclone separator and a third-stage high temperature resistant bag filter. After cooling down to 260 degrees Celsius, it enters the dust removal system. The existing bag filter The following problems exist during the use of the boiler: the gas-fired kiln requires the dust concentration of the purified gas to be reduced to less than 50mg/m3, and the concentration of coal tar to be less than 20mg/m3 to prevent the boiler from failing to operate normally. Therefore, the existing bag dust collector The coal tar cannot be removed by the device, so that the coal tar content is qualified; the furnace gas is cooled during the dust removal process, resulting in the precipitation of coal tar, and the filter bag will soon become sticky and fail. The gas fired kiln must be stopped and the dust bag should be replaced. Production, reducing work efficiency; at the same time, the dust content and coal tar concentration after purification must be met. The bag filter has many operating failures, poor cleaning effect, and difficult maintenance.

Contents of the invention

In order to solve the above problems, the utility model discloses a bag filter for effectively absorbing coal tar.

In order to achieve the above object, the utility model provides the following technical solutions:

A bag filter for effectively absorbing coal tar, comprising a box body, the box body includes a clean room, a dust removal room, and a settling room from top to bottom, the settling room is connected to an ash hopper, and an air intake The air inlet is connected to the air intake pipe, and the air distribution plate is provided inside the air intake pipe, and the air distribution plate surface is provided with honeycomb air distribution holes, and the upper end of the air intake pipe is connected to an inclined air deflector. The settling chamber is provided with a tar adsorption device, and the tar adsorption device includes an upper heat insulation layer, a tar activated carbon adsorption layer, and a lower heat insulation layer, and the surfaces of the upper heat insulation layer and the lower heat insulation layer are all provided with through holes. The dedusting room includes a flower plate arranged on the top of the dedusting room, a cloth bag frame connected to the flower plate through a venturi tube, and a high temperature resistant cloth bag is installed in the bag frame, and a pulse blowback device including a blowing pipe and a pulse valve is arranged above the flower plate , an air bag, and a controller, one side of the clean room is provided with an air outlet, the top of the clean room is provided with an openable upper cover door, and the clean room is provided with a high-efficiency filter.

Further, a rapping device is provided on one side of the coal tar adsorption device, and the rapping device includes a rapping motor and a rapper connected to the rapping motor, and the rapping device regularly raps the coal tar adsorption device. The coal tar activated carbon layer is filled with coal tar activated carbon. Coal tar activated carbon has the ability to adsorb coal tar and dust. When coal tar is adsorbed on the activated carbon, due to the viscosity of coal tar, the dust will be further adsorbed on the On coal tar, after a certain period of time of adsorption, the impurity particles formed by dust and coal tar will become larger and larger, blocking the gap between the original activated carbon, and the activated carbon will fail. The surface of coal tar is mixed with dust, so that the impurity particles formed by coal tar and dust are easily shaken off.

Further, an explosion-proof laser dust concentration detector is installed on one side of the coal tar adsorption device, the explosion-proof laser dust concentration detector is connected to a controller, and the controller is connected to the rapping motor. AGA6050 explosion-proof laser dust concentration detector is selected to monitor the dust concentration online. When the adsorption effect of activated carbon is weakened, the gap between the original activated carbon will be blocked, resulting in an increase in dust content. In order to avoid the occurrence of dust explosion accidents, an explosion-proof laser dust concentration The detector is connected to the rapping motor through the controller. When the dust concentration detected by the explosion-proof laser dust concentration detector is greater than the set value of the controller, the controller controls the motor to work and raps the coal tar adsorption device to realize intelligent control.

Further, a star-shaped ash discharge valve is provided at the bottom of the ash hopper, and the star-shaped ash discharge valve is connected to a fully enclosed chain conveyor. Efficient and fast transportation of dust.

The beneficial effects of the utility model:

(1) The air distribution plate makes the furnace gas evenly distributed above the ash hopper; the air guide plate effectively guides the furnace gas, on the one hand, the larger particles of dust in the furnace gas fall directly into the ash hopper under its own gravity, and on the other hand On the one hand, avoid high furnace gas content on one side of the air inlet, and low furnace gas content on the other side, effectively guide the flow, and evenly distribute the furnace gas.

(2) The coal tar adsorption device effectively adsorbs coal tar, avoids coal tar clogging the bag and causes the bag to fail, prolongs the service life of the bag, and saves costs; reduces the number of replacement bags, greatly improves the working efficiency of the bag filter, and improves the efficiency of the entire purification system Work efficiency: The concentration of coal tar in the treated furnace gas is below 20mg/m3. Tar activated carbon has a natural porous structure and a large specific surface area. It can effectively adsorb coal tar and has high mechanical strength. It can be cleaned by vibration to remove impurities adsorbed on coal tar activated carbon.

(3) The high-temperature bag in the dedusting room effectively removes dust, and the pulse blowback device is blowback off-line to clean dust.

(4) High-efficiency filter The high-efficiency filter is mainly used to capture particulate dust and various suspended solids below 0.5um. It has the characteristics of high filtration efficiency, low resistance, and large dust holding capacity, and effectively reduces noise and has a good purification effect. , the dust content is further reduced.

Description of drawings

Fig. 1, the structural representation of the utility model;

Fig. 2 is a schematic structural diagram of the coal tar adsorption device of the present invention.

List of reference signs: box body 100, clean room 1, air outlet 11, upper cover door 12, high-efficiency filter 13, dust removal room 2, flower plate 21, venturi tube 22, bag frame 23, bag 24, pulse blowback Device 25, blowing pipe 251, pulse valve 252, air bag 253, controller 254, settling chamber 3, ash hopper 4, star unloading valve 41, fully enclosed chain plate machine 42, air inlet 5, air inlet pipe 51 , air distribution plate 52, air deflector 53, tar adsorption device 6, upper heat insulation layer 61, tar activated carbon adsorption layer 62, lower heat insulation layer 63, rapping device 7, rapping motor 71, rapper 72, explosion-proof Laser dust concentration detector 8, controller 9, support 200.

detailed description

The utility model will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the utility model and are not intended to limit the scope of the utility model.

Example 1

As shown in Figure 1 and Figure 2, a bag filter that effectively absorbs coal tar includes a box body 100, and the box body includes a clean room 1, a dust removal room 2, and a settling room 3 welded in sequence from top to bottom, and the lower end of the settling room The ash hopper 4 is welded, and an air inlet 5 is arranged on one side of the ash hopper, and an air inlet pipe 51 is connected to the air inlet pipe, and an air distribution plate 52 is arranged in the air inlet pipe, and a honeycomb-shaped air distribution hole is provided on the surface of the air distribution board, so that The upper end of the trachea is connected with an inclined air deflector 53, and the settling chamber is provided with a tar adsorption device 6. The tar adsorption device includes an upper heat insulation layer 61, a tar activated carbon adsorption layer 62, and a lower heat insulation layer 63, and is arranged on the left and right sides of the tar activated carbon adsorption layer. The side is sealed with heat insulation layer, the upper heat insulation layer and the lower heat insulation layer are welded on the box body, and tar activated carbon is filled in the upper and lower heat insulation layers as the tar activated carbon adsorption layer, and the upper and lower heat insulation layers are made of high temperature resistant heat insulation materials, And on the surface of the heat insulation layer, there is a through hole for the furnace gas to pass through. The dust removal room includes a flower plate 21 arranged on the top of the dust removal room, and a cloth bag frame 23 connected to the flower plate through a venturi tube 22. A high temperature resistant cloth bag 24 is installed in the bag frame. , a pulse blowback device 25 is arranged above the flower plate, and the pulse blowback device includes a blowing pipe 251, a pulse valve 252, an air bag 253, and a controller 254. There is an air outlet 11 on one side of the clean room, and an openable The upper cover door 12 is provided with a high-efficiency filter 13 in the clean room.

As a further improvement of the utility model, a rapping device 7 is provided on one side of the coal tar adsorption device. The rapping device includes a rapping motor 71 and a rapping device 72 connected to the rapping motor. . The coal tar activated carbon layer is filled with coal tar activated carbon. Coal tar activated carbon has the ability to adsorb coal tar and dust. When coal tar is adsorbed on the activated carbon, due to the viscosity of coal tar, the dust will be further adsorbed on the On coal tar, after a certain period of time of adsorption, the impurity particles formed by dust and coal tar will become larger and larger, blocking the gap between the original activated carbon, and the activated carbon will fail. The surface of coal tar is mixed with dust, so that the impurity particles formed by coal tar and dust are easily shaken off.

An explosion-proof laser dust concentration detector 8 is provided on one side of the coal tar adsorption device, the explosion-proof laser dust concentration detector is connected to a controller 9, and the controller is connected to a rapping motor. AGA6050 explosion-proof laser dust concentration detector is selected to monitor the dust concentration online. When the adsorption effect of activated carbon is weakened, the gap between the original activated carbon will be blocked, resulting in an increase in dust content. In order to avoid the occurrence of dust explosion accidents, an explosion-proof laser dust concentration The detector is connected to the rapping motor through the controller. When the dust concentration detected by the explosion-proof laser dust concentration detector is greater than the set value of the controller, the controller controls the motor to work and raps the coal tar adsorption device to realize intelligent control.

A star-shaped ash discharge valve 41 is provided at the bottom of the ash hopper, and the star-shaped ash discharge valve is connected to a fully enclosed chain conveyor 42 . Efficient and fast transportation of dust.

The bottom of the cloth bag frame 23 is provided with a second flower plate, and the second flower plate is provided with a flower plate hole, and the cloth bag frame is fixedly installed on the flower plate hole.

In this embodiment, the rapper adopts a top electromagnetic hammer pulse rapper.

In order to maintain the stability of the dust collector, a bracket 200 is provided at the bottom of the box.

The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for those skilled in the art, some improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims (4)

1. A bag filter for effectively adsorbing coal tar, characterized in that: it comprises a box, and the box includes a clean room, a dust removal room, and a settling room from top to bottom, and the settling room is connected to an ash hopper, and the ash hopper An air inlet is provided on one side, and the air inlet is connected to an air intake pipe. An air distribution plate is provided inside the air intake pipe, and honeycomb-shaped air distribution holes are provided on the surface of the air distribution plate. The upper end of the air intake pipe is connected to Inclined wind deflector, the settling chamber is provided with a tar adsorption device, the tar adsorption device includes an upper heat insulation layer, a tar activated carbon adsorption layer, and a lower heat insulation layer, and the surfaces of the upper heat insulation layer and the lower heat insulation layer are both arranged There are through holes, and the dust removal chamber includes a flower plate arranged on the top of the dust removal chamber, a bag frame connected to the flower plate through a venturi tube, a high temperature resistant cloth bag is installed in the bag frame, and a pulse blowback device is arranged above the flower plate It includes a blowing pipe, a pulse valve, an air bag, and a controller. There is an air outlet on one side of the clean room, an openable upper door on the top of the clean room, and a high-efficiency filter in the clean room. 2. A bag filter for effectively absorbing coal tar as claimed in claim 1, characterized in that: one side of the coal tar adsorption device is provided with a rapping device, and the rapping device includes a rapping motor, a connecting vibrating Rapper for the motor. 3. A bag filter for effectively adsorbing coal tar as claimed in claim 2, characterized in that: one side of the coal tar adsorption device is provided with an explosion-proof laser dust concentration detector, and the explosion-proof laser dust concentration detector is connected to A controller, the controller is connected to the rapping motor. 4. A bag filter for effectively absorbing coal tar according to claim 1, characterized in that: the bottom of the ash hopper is provided with a star-shaped ash discharge valve, and the star-shaped ash discharge valve is connected to a fully enclosed chain plate machine.