Coal combustion dust absorption device

Abstract

The utility model discloses a coal combustion dust absorption device, which relates to the field of dust absorption devices and comprises a case, a case cover and support legs. The top of the case is provided with a case cover; the bottom of the case is provided with supporting legs; two first water drums and a second water drum are arranged in the case; the tops of the first water drum and the second water drum are communicated with a water inlet pipe; the bottoms of the first water drum and the second water drum are communicated with a water outlet pipe; a first air inlet pipe and two second air inlet pipes are arranged in the machine box, one end of the first air inlet pipe extends to the top of the box cover, the other end of the first air inlet pipe is connected with one ends of the two second air inlet pipes through a three-way valve, and the other ends of the two second air inlet pipes enter the two first water barrels from the upper portion respectively. The device is provided with the two water cylinders, dust collection and cooling treatment can be conducted on smoke alternately, continuous exhaust is achieved, and normal operation is not affected.

Description

Technical Field

[0001] The utility model relates to the field of dust collecting devices, in particular to a coal combustion dust collecting device. Background Art

[0002] Coal is mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus. The sum of carbon, hydrogen and oxygen accounts for more than 95% of organic matter. It is a very important energy source and an important raw material for metallurgy and chemical industry. The powder formed after combustion in coal-fired boilers can be used for coal ash dam treatment; roads, railways, drainage projects; water conservancy, tunnels, dikes, dams, gates; liquid reservoir anti-seepage and other fields; coal ash has adsorption, purification, catalysis and other functions, so in the laboratory, coal ash can be used to replace many drugs for various experiments, in daily life, it can be used for life-saving and sewage purification, in production, it can be used as fertilizer and improve acidic soil, in environmental protection, it can be used to treat industrial wastewater, etc.; if coal dust is not absorbed, it will float in the air and cause great pollution to the surrounding environment.

[0003] The existing technology for treating flue gas after coal combustion mainly adopts spraying or water filtration. By comparing the dust removal and cooling effects, water filtration is better than spraying, but the flue gas temperature is very high, which will cause the water temperature to rise rapidly and affect the cooling effect; therefore, after a period of time, it is necessary to stop exhausting, discharge hot water and then inject cold water, resulting in the inability to continuously discharge and treat the flue gas, affecting the operation. Utility Model Content

[0004] In order to solve the above-mentioned problems of the prior art, the utility model provides a coal combustion dust absorption device, which is provided with double water cylinders and can alternately absorb dust and cool the flue gas to achieve continuous exhaust without affecting normal operation.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a coal combustion dust absorption device, comprising a chassis, a chassis cover and legs; the chassis cover is installed on the top of the chassis, and the legs are installed on the bottom of the chassis; two first water cylinders and one second water cylinder are arranged inside the chassis; the tops of the first water cylinder and the second water cylinder are connected to the water inlet pipe, and the bottoms of the first water cylinder and the second water cylinder are connected to the water outlet pipe; a first air inlet pipe and two second air inlet pipes are arranged inside the chassis, one end of the first air inlet pipe extends to the top of the chassis cover, the other end of the first air inlet pipe is connected to one end of the two second air inlet pipes through a three-way valve, and the other ends of the two second air inlet pipes enter the interior of the two first water cylinders from above respectively; the top of the first water cylinder and the top of the second water cylinder are connected through an air guide pipe, the top of the second water cylinder is connected to one end of the air outlet pipe, and the other end of the air outlet pipe extends to the outside of the chassis.

[0006] The bottom of the first water cylinder and the second water cylinder is a funnel-shaped structure that is wide at the top and narrow at the bottom. This structure is conducive to the dust in the cylinder being discharged from the water outlet pipe after settling downward.

[0007] The water inlet pipe and the water outlet pipe are both provided with water valves; when water is poured into the water cylinder, the water valve on the water inlet pipe is opened, and the water valve on the water outlet pipe is closed; when sewage in the water cylinder is discharged, the water valve on the water inlet pipe is closed, and the water valve on the water outlet pipe is opened; when the water cylinder is filled with water and drained, and air is discharged into the water cylinder, the water valves on the water inlet pipe and the water outlet pipe are both closed.

[0008] The beneficial effects of the utility model are:

[0009] The coal combustion dust absorption device is provided with two first water cylinders to realize one-time cleaning of the flue gas. The passage of the air inlet pipe is controlled by a three-way valve so that the two first water cylinders can alternately absorb dust and cool the flue gas; when the flue gas enters one first water cylinder, the water in the other first water cylinder is replaced, thereby realizing continuous exhaust without affecting normal operation;

[0010] The coal combustion dust absorption device is also provided with a second water cylinder for cleaning the flue gas. After the flue gas is dusted and cooled in the first water cylinder, it enters the second water cylinder for secondary cleaning and is then discharged from the chassis, thereby greatly reducing the dust content in the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is the structural schematic diagram of the inside of the chassis;

[0014] Markings in the figure: 1. chassis, 2. chassis cover, 3. legs, 4. first water cylinder, 5. second water cylinder, 6. water inlet pipe, 7. water outlet pipe, 8. first air inlet pipe, 9. second air inlet pipe, 10. three-way valve, 11. air guide pipe, 12. water valve, 13. air outlet pipe. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0016] Reference Figure 1-2The present embodiment provides a coal combustion dust absorption device, including a chassis 1, a chassis cover 2 and legs 3; the chassis cover 2 is installed on the top of the chassis 1, and four legs 3 are installed on the bottom of the chassis 1; two first water cylinders 4 and one second water cylinder 5 are arranged inside the chassis 1, and the two first water cylinders 4 are symmetrically distributed on both sides of the second water cylinder 5; the tops of the first water cylinder 4 and the second water cylinder 5 are connected to one end of a water inlet pipe 6, and the other end of the water inlet pipe 6 extends to the outside of the chassis 1; the bottoms of the first water cylinder 4 and the second water cylinder 5 are connected to one end of a water outlet pipe 7, and the other end of the water outlet pipe 7 Extending to the outside of the chassis 1; a first air inlet pipe 8 and two second air inlet pipes 9 are provided inside the chassis 1, one end of the first air inlet pipe 8 extends to the top of the box cover 2, the other end of the first air inlet pipe 8 is connected to one end of the two second air inlet pipes 9 through a three-way valve 10, and the other ends of the two second air inlet pipes 9 respectively enter the interior of the two first water cylinders 4 from above; the top of the first water cylinder 4 and the top of the second water cylinder 5 are connected by an air guide pipe 11; the top of the second water cylinder 5 is connected to one end of the air outlet pipe 13, and the other end of the air outlet pipe 13 extends to the outside of the chassis 1.

[0017] In this embodiment, the bottom of the first water cylinder 4 and the second water cylinder 5 is a funnel-shaped structure that is wide at the top and narrow at the bottom. This structure is conducive to the dust in the cylinder to settle downward and then be discharged from the water outlet pipe 7.

[0018] In this embodiment, water valves 12 are provided on the water inlet pipe 6 and the water outlet pipe 7; when water is poured into the water cylinder, the water valve 12 on the water inlet pipe 6 is opened, and the water valve 12 on the water outlet pipe 7 is closed; when sewage in the water cylinder is discharged from the water outlet pipe 7, the water valve 12 on the water inlet pipe 6 is closed, and the water valve 12 on the water outlet pipe 7 is opened; when the water cylinder is filled with water and drained, and air is exhausted into the water cylinder, the water valves 12 on the water inlet pipe 6 and the water outlet pipe 7 are both closed.

[0019] The working principle of the device is as follows: cold water is injected into two first water cylinders 4 and one second water cylinder 5, so that the second water inlet pipe 9 in the first water cylinder 4 and the water guide pipe 11 in the second water cylinder 5 are located below the liquid level, and the water guide pipe 11 in the first water cylinder 4 is located above the liquid level; the flue gas first enters the first air inlet pipe 8, and enters the second air inlet pipe 9 located on the left side under the action of the three-way valve 10, and then enters the first water cylinder 4 located on the left side. After contacting with the cold water, the dust in the flue gas is mixed into the water, and the flue gas is cooled at the same time. The flue gas enters the cold water in the second cylinder 5 from the water guide pipe 11 for secondary dust removal and cooling, and then is discharged from the air outlet pipe 13.

[0020] After working for a period of time, the three-way valve 10 switches the state, and the smoke in the first air inlet pipe 8 is introduced into the second air inlet pipe 9 on the right, and then enters the first water cylinder 4 on the right. After contacting with the cold water, the dust in the smoke is mixed into the water, and the smoke is cooled at the same time. The smoke enters the cold water in the second cylinder 5 from the water pipe 11 for secondary dust removal and cooling, and then is discharged from the air outlet pipe 13. At the same time, the water valve 12 at the bottom of the first water cylinder 4 on the left is opened, and the sewage is discharged from the outlet pipe 7 below, and the water inlet pipe 6 is injected with clean cold water to complete the water change.

[0021] After a period of time, the three-way valve 10 switches state again, so that the smoke in the first air intake pipe 8 is introduced into the second air intake pipe 9 on the right side, and then cleaned; at the same time, the water in the first water cylinder 4 on the right side is changed. In this way, the two first water cylinders 4 are cleaned and changed alternately, thereby achieving continuous cleaning operation for the smoke.

[0022] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A coal combustion dust absorption device, comprising a chassis (1), a chassis cover (2) and legs (3); the chassis cover (2) is installed on the top of the chassis (1), and the legs (3) are installed on the bottom of the chassis (1); the characteristics are: Two first water cylinders (4) and a second water cylinder (5) are provided inside the case (1); the tops of the first water cylinder (4) and the second water cylinder (5) are connected to a water inlet pipe (6), and the bottoms of the first water cylinder (4) and the second water cylinder (5) are connected to a water outlet pipe (7); a first air inlet pipe (8) and two second air inlet pipes (9) are provided inside the case (1); one end of the first air inlet pipe (8) extends to the top of the case cover (2), and the other end of the first air inlet pipe (8) is connected to one end of the two second air inlet pipes (9) through a three-way valve (10), and the other ends of the two second air inlet pipes (9) respectively enter the interior of the two first water cylinders (4) from above; the top of the first water cylinder (4) and the top of the second water cylinder (5) are connected through an air guide pipe (11), and the top of the second water cylinder (5) is connected to one end of an air outlet pipe (13), and the other end of the air outlet pipe (13) extends to the outside of the case (1).

2. The coal combustion dust absorption device according to claim 1, characterized in that: The bottoms of the first water cylinder (4) and the second water cylinder (5) are funnel-shaped structures that are wide at the top and narrow at the bottom.

3. The coal combustion dust absorption device according to claim 1, characterized in that: The water inlet pipe (6) and the water outlet pipe (7) are both provided with water valves (12).

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