Flue gas pre-desulfurization structure of desulfurization tower

Abstract

The utility model provides a flue gas pre-desulfurization structure of a desulfurization tower, which relates to the technical field of industrial waste gas treatment and comprises a tank body, a spiral heat absorption pipe is arranged in the tank body, a group of heat absorption plates are arranged on the inner side and the outer side of the heat absorption pipe respectively, and the heat absorption plates are welded with the heat absorption pipe. The water inlet pipe and the water outlet pipe penetrate through the front face of the tank body, a flue gas outlet is formed in the middle of one end of the tank body, and a dust collecting box is arranged on the side, opposite to the flue gas outlet, of the tank body. The heat absorption pipe and the heat absorption plate absorb the heat of the flue gas, the contact area of the heat absorption plate and the flue gas is increased, the heat absorption efficiency is improved, the absorbed heat heats water in the heat absorption pipe, the temperature of the flue gas is reduced after the heat is absorbed, and damage to the inner wall of the desulfurizing tower after the flue gas is introduced into the desulfurizing tower is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial waste gas treatment, in particular to a flue gas pre-desulfurization structure of a desulfurization tower. Background Art

[0002] The desulfurization tower is a tower-type equipment for desulfurization of industrial waste gas. The desulfurization tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal. It is also called granite water film desulfurization dust collector, or granite water film desulfurization dust collector. The desulfurization tower is easy to maintain, and can achieve the effects of dust removal and desulfurization at the same time by preparing different dust removal agents. After years of improvement, it has developed into various types of desulfurization towers such as Venturi type, swirl plate type, swirl column type, float type, sieve plate type, pneumatic emulsification type, etc. The equipment technology is becoming more and more mature, each with its own advantages and disadvantages. Enterprises can choose different types according to their own needs. In order to achieve better flue gas treatment effect, a group of flue gas pre-desulfurization structures are usually set on the path before the flue gas enters the desulfurization tower. The flue gas pre-desulfurization structure absorbs sulfur dioxide in the flue gas through sprinkling water, which reduces the burden on the desulfurization tower.

[0003] The existing flue gas pre-desulfurization structure can only reduce the sulfur dioxide content in the flue gas, and has a poor effect on cooling the flue gas. Long-term introduction of high-temperature flue gas into the desulfurization tower will damage the inner wall of the desulfurization tower, affecting the service life of the desulfurization tower, and the high-temperature flue gas cannot utilize the heat inside the desulfurization tower. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the problem that the flue gas pre-desulfurization structure cannot absorb and utilize the heat of the flue gas, which affects the service life of the desulfurization tower, and a flue gas pre-desulfurization structure of the desulfurization tower is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a flue gas pre-desulfurization structure of a desulfurization tower, including a tank body, a heat absorption tube is arranged inside the tank body, the heat absorption tube is spiral, a group of heat absorption plates are arranged on the inside and outside of the heat absorption tube, the heat absorption plates are welded to the heat absorption tube, a water inlet pipe is arranged on the front side of one end of the heat absorption tube, a water outlet pipe is arranged on the front side of the other end of the heat absorption tube, the water inlet pipe and the water outlet pipe both pass through the front side of the tank body, and a flue gas outlet is arranged in the middle of one end of the tank body.

[0006] Preferably, three groups of bases are provided at equal intervals on the bottom of the tank body, a water storage tank is provided between two groups of the bases, and an opening is provided at the contact portion between the tank body and the water storage tank, and the opening is rectangular.

[0007] Preferably, a dust collecting box is provided on the side of the tank body facing away from the smoke outlet, and a smoke inlet is provided on the side of the dust collecting box facing away from the tank body, and the smoke inlet is the same size as the smoke outlet.

[0008] Preferably, the dust box is threadedly connected to the tank body, the dust box is T-shaped, through holes are provided on both sides of the top of the dust box, the through holes are circular, and a filter is provided inside the through holes close to the tank body.

[0009] Preferably, a water pump is provided on the side of the base facing away from the water tank, a water pipe is provided between the water pump and the water tank, and the water pipe runs through the base.

[0010] Preferably, another set of water pipes is provided on the top of the water pump, the water pipes are L-shaped, and a main water spray pipe is provided on one side of the top of the water pipes.

[0011] Preferably, the main water spray pipe runs through one side of the tank body, six groups of auxiliary water spray pipes are provided on the front and back sides of the main water spray pipe, a plurality of water spray ports are provided at the bottom of the main water spray pipe and the auxiliary water spray pipe, and the auxiliary water spray pipe is in an arc shape.

[0012] Beneficial Effects

[0013] In the utility model, a water inlet pipe, a water outlet pipe, a heat absorbing pipe and a heat absorbing plate are adopted. External water enters the heat absorbing pipe through the water inlet pipe. When the flue gas passes into the tank body, the heat absorbing pipe and the heat absorbing plate absorb the heat of the flue gas. The heat absorbing plate increases the contact area with the flue gas and improves the heat absorption efficiency. The absorbed heat heats the water inside the heat absorbing pipe. The heated water leaves the tank body through the water outlet pipe and is transmitted to the place where hot water is needed. The temperature of the flue gas decreases after the heat is absorbed, thereby reducing the damage to the inner wall of the desulfurization tower after the flue gas passes into the desulfurization tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an axonometric drawing of the utility model;

[0015] Figure 2 It is a front view of the utility model;

[0016] Figure 3 It is the internal axonometric drawing of the utility model;

[0017] Figure 4 This is an axonometric view of the dust collection box of the utility model;

[0018] Figure 5 It is a left view of the utility model.

[0019] Legend:

[0020] 1. Water inlet pipe; 2. Tank body; 3. Water storage tank; 4. Water outlet pipe; 5. Smoke outlet; 6. Base; 7. Water pipe; 8. Main water spray pipe; 9. Heat absorption pipe; 10. Auxiliary water spray pipe; 11. Heat absorption plate; 12. Smoke inlet; 13. Filter; 14. Dust collection box; 15. Water pump. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Specific embodiment one:

[0024] Reference Figure 1-5 The present embodiment provides a flue gas pre-desulfurization structure of a desulfurization tower, including a tank body 2, a heat absorbing tube 9 is arranged inside the tank body 2, the heat absorbing tube 9 is spiral-shaped, a group of heat absorbing plates 11 are arranged inside and outside the heat absorbing tube 9, the heat absorbing tube 9 and the heat absorbing plates 11 absorb heat in the flue gas, the heat absorbing plates 11 are welded to the heat absorbing tube 9, a water inlet pipe 1 is arranged on the front of one end of the heat absorbing tube 9, external water enters the inside of the heat absorbing tube 9 through the water inlet pipe 1, and a water outlet pipe 4 is arranged on the front of the other end of the heat absorbing tube 9, and the heated water leaves the tank body 2 through the water outlet pipe 4 The water inlet pipe 1 and the water outlet pipe 4 both pass through the front of the tank body 2. A smoke outlet 5 is provided in the middle of one end of the tank body 2. The smoke leaves the tank body 2 through the smoke outlet 5. Three groups of bases 6 are provided at equal intervals at the bottom of the tank body 2. The bases 6 support the tank body 2. A water storage tank 3 is provided between the two groups of bases 6. Liquid that absorbs acidic gases is placed in the water storage tank 3. An opening is provided at the contact portion between the tank body 2 and the water storage tank 3. The opening is rectangular. A dust collecting box 14 is provided on the side of the tank body 2 that is not facing the smoke outlet 5. The dust collecting box 14 is provided on the side that is not facing the tank body 2. The smoke inlet 12 is the same size as the smoke outlet 5. The dust box 14 is threadedly connected to the tank body 2, which is convenient for disassembling and replacing the dust box 14. The dust box 14 is T-shaped. Through holes are provided on both sides of the top of the dust box 14. The through holes are circular. A filter screen 13 is provided inside the through holes on the side close to the tank body 2. A water pump 15 is provided on the side of the base 6 facing away from the water tank 3. A water pipe 7 is provided between the water pump 15 and the water tank 3. The water pipe 7 runs through the base 6. Another set of water pipes 7 is provided on the top of 15. The water pump 15 extracts the liquid in the water storage tank 3 through the side water pipes 7, and transmits the liquid to the main water spraying pipe 8 through the top water pipe 7. The water pipe 7 is L-shaped. A main water spraying pipe 8 is provided on one side of the top of the water pipe 7. The main water spraying pipe 8 runs through one side of the tank body 2. Six sets of auxiliary water spraying pipes 10 are provided on the front and back sides of the main water spraying pipe 8. A plurality of water spraying ports are provided at the bottom of the main water spraying pipe 8 and the auxiliary water spraying pipe 10. The liquid is sprayed out from the inside of the water spraying port. The auxiliary water spraying pipe 10 is in an arc shape.

[0025] The user connects the flue gas pipe to the flue gas inlet 12. After the flue gas enters the tank body 2, the external water enters the heat absorption tube 9 through the water inlet pipe 1. The heat absorption tube 9 and the heat absorption plate 11 absorb the heat of the flue gas. The heat absorption plate 11 increases the contact area with the flue gas and improves the heat absorption efficiency. The absorbed heat heats the water inside the heat absorption tube 9. The heated water leaves the tank body 2 through the water outlet pipe 4 and is transmitted to the place where hot water is needed. After the flue gas absorbs the heat, the temperature is reduced, which reduces the damage to the inner wall of the desulfurization tower after entering the desulfurization tower. At the same time, the water pump 15 extracts the liquid inside the water storage tank 3 through the side water delivery pipe 7, and transmits the liquid to the main water spray pipe 8 and the auxiliary water spray pipe 10 through the top water delivery pipe 7. The liquid is sprayed from the water spray port to absorb the acid gas inside the tank body 2. After the liquid falls to the bottom of the tank body 2, it enters the water storage tank 3 again through the rectangular opening. The pre-treated flue gas leaves the tank body 2 through the flue gas outlet 5 and enters the desulfurization tower. Specific embodiment 2:

[0027] Reference Figure 1-5 The present embodiment provides a flue gas pre-desulfurization structure of a desulfurization tower, including a tank body 2, a dust box 14 is provided on the side of the tank body 2 facing away from the flue gas outlet 5, a cover is provided on the front of the dust box 14, a flue gas inlet 12 is provided on the side of the dust box 14 facing away from the tank body 2, the dust box 14 is T-shaped, and through holes are provided on both sides of the top of the dust box 14, the through holes are circular, and a filter screen 13 is provided inside the through hole close to the tank body 2. The filter screen 13 filters impurities with larger particles in the flue gas to prevent impurities from entering subsequent steps and affecting the normal operation of the desulfurization tower. The blocked impurities fall to the bottom of the dust box 14. When a certain amount of impurities are accumulated at the bottom of the dust box 14, the user opens the cover and takes out the impurities.

[0028] In summary:

[0029] A water inlet pipe 1, a water outlet pipe 4, a heat absorbing pipe 9, and a heat absorbing plate 11 are used. External water enters the heat absorbing pipe 9 through the water inlet pipe 1. When the flue gas passes into the tank body 2, the heat absorbing pipe 9 and the heat absorbing plate 11 absorb the heat of the flue gas. The heat absorbing plate 11 increases the contact area with the flue gas and improves the heat absorption efficiency. The absorbed heat heats the water inside the heat absorbing pipe 9. The heated water leaves the tank body 2 through the water outlet pipe 4 and is transmitted to a place where hot water is needed. The temperature of the flue gas decreases after the heat is absorbed, thereby reducing the damage to the inner wall of the desulfurization tower after the flue gas passes into the desulfurization tower.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A flue gas pre-desulfurization structure of a desulfurization tower, comprising a tank body (2), characterized in that: A heat absorbing tube (9) is arranged inside the tank body (2), the heat absorbing tube (9) is spiral-shaped, a group of heat absorbing plates (11) are arranged inside and outside the heat absorbing tube (9), the heat absorbing plates (11) are welded to the heat absorbing tube (9), a water inlet pipe (1) is arranged on the front of one end of the heat absorbing tube (9), a water outlet pipe (4) is arranged on the front of the other end of the heat absorbing tube (9), the water inlet pipe (1) and the water outlet pipe (4) both pass through the front of the tank body (2), and a smoke outlet (5) is arranged in the middle of one end of the tank body (2).

2. A desulfurization tower flue gas pre-desulfurization structure according to claim 1, characterized in that: Three groups of bases (6) are arranged at equal intervals at the bottom of the tank body (2), a water storage tank (3) is arranged between two groups of the bases (6), and an opening is arranged at the contact portion between the tank body (2) and the water storage tank (3), and the opening is rectangular.

3. A desulfurization tower flue gas pre-desulfurization structure according to claim 1, characterized in that: A dust collecting box (14) is provided on the side of the tank body (2) facing away from the smoke outlet (5), and a smoke inlet (12) is provided on the side of the dust collecting box (14) facing away from the tank body (2), and the smoke inlet (12) is the same size as the smoke outlet (5).

4. A flue gas pre-desulfurization structure of a desulfurization tower according to claim 3, characterized in that: The dust collecting box (14) is threadedly connected to the tank body (2); the dust collecting box (14) is T-shaped; both sides of the top of the dust collecting box (14) are provided with through holes; the through holes are circular; a filter screen (13) is provided inside the through hole on the side close to the tank body (2).

5. A desulfurization tower flue gas pre-desulfurization structure according to claim 2, characterized in that: A water pump (15) is provided on the side of the base (6) facing away from the water storage tank (3), a water delivery pipe (7) is provided between the water pump (15) and the water storage tank (3), and the water delivery pipe (7) runs through the base (6).

6. A flue gas pre-desulfurization structure of a desulfurization tower according to claim 5, characterized in that: Another group of water pipes (7) are provided on the top of the water pump (15). The water pipes (7) are L-shaped, and a main water spray pipe (8) is provided on one side of the top of the water pipes (7).

7. A flue gas pre-desulfurization structure of a desulfurization tower according to claim 6, characterized in that: The main water spray pipe (8) passes through one side of the tank body (2), and six groups of auxiliary water spray pipes (10) are arranged on the front and back sides of the main water spray pipe (8). The bottoms of the main water spray pipe (8) and the auxiliary water spray pipe (10) are provided with a plurality of water spray ports, and the auxiliary water spray pipe (10) is in an arc shape.

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