CN204213942U - A kind of boiler waste gas purification device - Google Patents

Abstract

The utility model relates to a purification device, in particular to a boiler waste gas purification device. Including smoke collection hood, gas pipeline, induced draft fan, air storage tank, filter, boiler, water film processor, external exhaust induced draft fan; according to smoke collection hood, gas transmission pipeline, air storage tank, induced draft fan, filter, The boiler, water film processor, and external induced draft fan are connected in sequence; the gas storage tank is equipped with an explosion-proof door to prevent the entire pipeline from bursting under pressure and causing waste gas leakage and polluting the surrounding environment when the induced draft fan fails and suddenly stops rotating. ; The filter filters out granular objects such as talcum powder, carbon black, and fine dust, and the gas is filtered out and enters the boiler; a check valve is arranged on the pipeline connecting the filter and the boiler to prevent the furnace from blowing when the furnace is under positive pressure. The exhaust gas flows back; the water film processor is connected to the chimney through the external induced draft fan, and the treated gas is discharged out. It is a boiler exhaust gas purification device with wide application range, high purification efficiency and full utilization of resources.

Description

A boiler exhaust gas purification device

technical field

The utility model relates to a purification device, in particular to a boiler waste gas purification device.

Background technique

For coal-fired boilers, the exhaust gas mainly includes coal-fired flue gas and coal-fired dusty gas; the main pollutants are nitrogen oxides, sulfur dioxide, smoke, Hg, and CO. At present, some factories use activated carbon to adsorb polluted gases, which is essentially a process of adsorption and concentration. It does not really transform harmful gases. It is a physical process, and the cost is very high, which has been gradually eliminated by enterprises.

During the vulcanization and banburying of rubber products vulcanization workshop, the boiler will produce polluting gas and dust. If it is directly discharged into the atmosphere without treatment, it will not only fail to meet the boiler air pollutant discharge standard, but will also cause environmental pollution and reduce the utilization of coal. rate, resulting in a waste of resources. Chinese patent (CN203108425U) discloses a hydrogen sulfide waste gas purification equipment, which purifies hydrogen sulfide gas by chemical reaction, but cannot absorb other waste gases such as other dust, and has a narrow scope of application. Therefore, a purification device suitable for coal-fired boilers with a wide range of applications, high purification efficiency, and full utilization of resources has not yet been seen.

Utility model content

In view of the above existing problems, the utility model provides a boiler exhaust gas purification device with wide application range, high purification efficiency and sufficient resource utilization.

In order to achieve the above purpose, the utility model adopts the following technical scheme, a boiler exhaust gas purification device, including a smoke collecting hood, a gas transmission pipeline, an induced draft fan, an air storage tank, a filter, a boiler, a water film processor, and an external exhaust induced draft fan The fume collecting hood is arranged in the vulcanization and banburying workshop, and is connected with the gas pipeline; the other end of the gas pipeline is connected to the gas storage tank, and the gas storage tank is provided with an explosion-proof door to prevent the induced draft fan from malfunctioning. When the rotation is suddenly stopped, the entire pipeline is under pressure and the exhaust gas leaks and the surrounding environment is polluted; the induced draft fan is respectively connected to the air storage tank and the filter, and the exhaust gas from the workshop and the dust in the workshop are vulcanized by air power. , inhale the gas storage tank in the form of a pipeline, and then filter out talcum powder, carbon black, fine dust and other particulate objects, filter out the gas, and enter the boiler; the other end of the filter is connected to the boiler, and the connection between the two A check valve is set on the connecting pipe to prevent the waste gas from flowing back when the furnace is under positive pressure; the other end of the boiler is connected to a water film processor for further treatment and purification; the water film processor is connected to the chimney through the external exhaust fan , to discharge the treated gas.

Furthermore, a furnace core plate is provided at the connection between the boiler and the ventilation pipe, which functions to disperse the gas, so that the collected gas can be burned more fully.

Further, an exhaust pipeline is arranged above the gas storage tank, and an on-off valve is arranged on the exhaust pipeline, so that when the pressure of the gas storage tank is too high, the gas is discharged in time.

Further, a ground pipe is provided under the gas storage tank, which is connected to the sodium hydroxide pool, and when the pressure of the gas storage tank is too high, waste gas is introduced into the sodium hydroxide pool for reaction treatment.

Under the action of the induced draft fan in the workshop, the exhaust gas vulcanized from the workshop and the dust in the workshop will enter the pipeline through the fume collection hood through the air force, and then enter the gas storage tank through the pipeline, pass through the filter, and filter the talcum powder, charcoal, etc. The gas after granular objects such as black and fine dust enters the boiler for combustion. After the boiler is completely burned, it enters the water film processor through the pipeline to achieve the second purification, and then passes through the induced draft fan to discharge the purified gas through the chimney to the atmosphere, in order to achieve the purpose of protecting the environment.

The advantages of the utility model are: 1. The waste gas produced by the boiler in the workshop is treated by the combustion method, and the resource utilization rate is improved while purifying; 2. By optimizing the reaction sequence of the entire equipment, it adopts first filtration, combustion, and then water film purification The treatment process is more thorough, the cost is lower, and the processing time is faster.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

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

In the figure, 1 smoke collection hood, 2 gas pipeline, 3 induced draft fan, 4 gas storage tank, 41 explosion-proof door, 42 exhaust pipe, 43 ground pipe, 5 filter, 56 check valve, 6 boiler, 61 furnace core board, 7 water film processors, 8 external induced draft fans, and 9 chimneys.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. 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 belong to the scope of protection of the present utility model.

A boiler exhaust gas purification device, comprising a smoke collection hood 1, a gas transmission pipeline 2, an induced draft fan 3, a gas storage tank 4, a filter 5, a boiler 6, a water film processor 7, and an external exhaust induced draft fan 8; The cover 1 is set in the vulcanization and mixing workshop, and is connected to the gas pipeline 2; the other end of the gas pipeline 2 is connected to the gas storage tank 4, and the gas storage tank is equipped with an explosion-proof door 41 to prevent the induced draft fan from malfunctioning. When the rotation stops suddenly, the entire pipeline is under pressure and the exhaust gas leaks and the surrounding environment is polluted; the induced draft fan 3 is respectively connected to the air storage tank 4 and the filter 5, and the exhaust gas from the workshop is vulcanized by aerodynamic force, and the workshop The dust in the air is sucked into the gas storage tank through the pipeline, and then the filter filters out talcum powder, carbon black, fine dust and other granular objects, and the gas is filtered out and enters the boiler; the other end of the filter 5 is connected to the boiler 6 The connecting pipes of the two are provided with a check valve 56 to prevent the exhaust gas from flowing back when the furnace is under positive pressure; the other end of the boiler is connected to a water film processor 7 for further treatment and purification; the water film processor 7. Connect the chimney 9 through the external induced draft fan 8 to discharge the treated gas.

Further, a furnace core plate 61 is provided at the connection between the boiler 6 and the ventilation pipe, which functions to disperse the gas, so that the collected gas can be burned more fully.

Further, an exhaust pipe 42 is arranged above the gas storage tank 4 , and an on-off valve is arranged on the exhaust pipe 42 to discharge the gas in time when the pressure of the gas storage tank is too high.

Further, a ground pipe 43 is provided under the gas storage tank 4, which is connected to the sodium hydroxide pool, and when the pressure of the gas storage tank is too high, waste gas is introduced into the sodium hydroxide pool for reaction treatment.

Claims (4)

1. A boiler exhaust gas purification device, characterized in that: comprising a smoke collecting hood (1), a gas pipeline (2), an induced draft fan (3), an air storage tank (4), a filter (5), a boiler (6 ), a water film processor (7), an external exhaust fan (8); the smoke collection hood (1) is arranged in the vulcanization and banburying workshop, and is connected with the gas pipeline (2); the gas pipeline ( 2) the other end is connected to the gas storage tank (4), and the gas storage tank is provided with an explosion-proof door (41); the induced draft fan (3) is respectively connected to the gas storage tank (4) and the filter (5); the The other end of the filter (5) is connected to the boiler (6), and a check valve (56) is arranged on the connecting pipe of the two; the other end of the boiler is connected with a water film processor (7); the water film processor (7 ) is connected to the chimney (9) by an external induced draft fan (8). 2. The boiler exhaust gas purification device according to claim 1, characterized in that: a furnace core plate (61) is provided at the connection between the boiler (6) and the ventilation pipe. 3. The boiler exhaust gas purification device according to claim 1, characterized in that: an exhaust pipe (42) is arranged above the gas storage tank (4), and an on-off valve is arranged on the exhaust pipe (42). 4. The boiler exhaust gas purification device according to claim 1 or 3, characterized in that: a ground-through pipe (43) is arranged under the gas storage tank (4) and is connected to a sodium hydroxide pool.