Pre-cooling device for boiler flue gas purification

Abstract

The utility model relates to the field of boiler flue gas treatment, and discloses a pre-cooling device for boiler flue gas purification, which comprises a shell, the shell comprises an outer shell, the middle part of the inner wall of the shell is fixedly connected with a cooling mechanism, the cooling mechanism comprises a plurality of fixing plates, the upper surfaces and the lower surfaces of the fixing plates are fixedly connected with a plurality of tube plates, and the tube plates are fixedly connected with the inner wall of the shell. A plurality of finned tubes are fixedly connected to the inner wall of the tube plate, a spraying mechanism is fixedly connected to the lower end of the inner wall of the shell and comprises an intercepting net, a vibrator is fixedly connected to one side of the upper surface of the intercepting net, and a water supply pipe is fixedly connected to the middle of the outer wall of a first water conveying pipe. Compared with most existing boiler flue gas cooling devices, the boiler flue gas cooling device is provided with the cooling mechanism, cooling water is introduced into the finned tubes, smoke dust is further cooled, meanwhile, the finned tubes are arranged in a bent mode, and the smoke dust cooling effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler flue gas treatment field especially relates to a precooling device for boiler flue gas purification. BACKGROUND

[0002] Boiler produces gas-solid mixed flue gas in the combustion process, and the flue gas is easy to generate sulfuric acid in high temperature, which forms corrosion effect to the tail heating surface of the boiler, reduces the service life of the equipment, and the flue gas purification equipment has certain requirements on the flue gas temperature, and the high temperature will damage the purification equipment and affect the purification effect.

[0003] Part of the boiler flue gas cooling device adopts a single cooling method when cooling the flue gas, so that the cooling effect is not ideal, and the flue gas contains a large amount of particles, if the dust particles are not screened before purification, the flue gas is easy to block the purification device and affect the purification effect, therefore, a new scheme is needed to solve this problem.

[0004] Therefore, the person skilled in the art provides a precooling device for boiler flue gas purification to solve the problems in the background art. CONTENT OF THE UTILITY MODEL

[0005] The utility model discloses a precooling device for boiler flue gas purification, compared with the traditional boiler flue gas cooling device, the boiler flue gas cooling device is provided with a spraying mechanism, the water mist is sprayed through the water spraying opening to adsorb and preliminarily cool the particles in the dust, part of the particles still rising is intercepted by the interception net, the dust particles are prevented from further going upward, and the dust attached to the interception net is shaken down through the vibrator, and the cooling mechanism is arranged, the cooling water is introduced into the finned tube to further cool the dust, and the arrangement of the finned tube is curved, so that the dust cooling effect is better.

[0006] To achieve the above object, the utility model provides the following technical scheme.

[0007] The utility model provides a kind of pre-cooling device for boiler flue gas purification, including shell, the shell includes shell, the shell inner wall middle part is fixedly connected with cooling mechanism, the cooling mechanism includes fixed plate and water pipe one, the upper surface of the fixed plate one side is fixedly connected with pipe plate, the inner wall of the pipe plate is fixedly connected with multiple finned tubes, the upper end of the pipe plate outer wall one side is fixedly connected with water inlet pipe, the lower end of the pipe plate outer wall is fixedly connected with water outlet pipe, the lower end of the shell inner wall is fixedly connected with spraying mechanism, the spraying mechanism includes intercepting net, the upper surface of the intercepting net one side is fixedly connected with vibrator, the middle part of the water pipe one outer wall is fixedly connected with water supply pipe, the end of the water supply pipe away from water pipe one is fixedly connected with water jet pipe, multiple water jet openings are arranged on the lower surface of the water jet pipe.

[0008] Through the above technical scheme, the boiler flue gas cooling device is provided with spraying mechanism and cooling mechanism, and the smoke dust is cooled in multiple ways.

[0009] Further, the water pipe one is fixedly connected to the end of the water inlet pipe away from the pipe plate, the end of the water pipe one away from the water inlet pipe is fixedly connected with water pump, and the end of the water outlet pipe away from the pipe plate is fixedly connected with water pipe two.

[0010] Through the above technical scheme, the water pump and the water pipe are arranged to convey the cooling water cooled in the cooling tower to the finned tube and the water jet pipe to cool the flue gas.

[0011] Further, the fixed plate is fixedly connected to the upper end and the middle end of the inner wall of the shell on both sides.

[0012] Through the above technical scheme, the fixed plate is arranged to fix the finned tube and the pipe plate.

[0013] Further, the intercepting net is fixedly connected to the lower end of the inner wall of the shell on both sides, and the outer wall of the shell is fixedly connected with motor box.

[0014] Through the above technical scheme, the intercepting net is arranged to further intercept the smoke dust particles, the motor box is arranged to place the motor, and the vibrator is powered and the vibration frequency is controlled.

[0015] Further, the inner top surface of the shell is fixedly connected with fan.

[0016] Through the above technical scheme, the fan is arranged to blow out the flue gas from the cooling device.

[0017] Further, the outer wall of the front end and the rear end of the shell is fixedly connected with multiple supports.

[0018] Through the above technical scheme, the support is arranged to support the cooling device.

[0019] Further, the lower surface of the shell is fixedly connected with a bottom plate.

[0020] Through the technical scheme, the bottom plate and the shell are fixed by screws and nuts, so that the bottom plate can be easily disassembled and cleaned after dust particles are accumulated on the bottom.

[0021] Further, the lower end of the side outer wall of the shell is provided with a smoke dust inlet, and the upper end of the side outer wall of the shell away from the smoke dust inlet is provided with a smoke dust outlet.

[0022] Through the technical scheme, the smoke dust inlet and the outlet are provided to facilitate the connection of the filter and the boiler smoke exhaust pipe, so as to facilitate the cooling of the flue gas.

[0023] The utility model has the following beneficial effects:

[0024] 1. The pre-cooling device for boiler flue gas purification provided by the utility model has the following advantages compared with the existing boiler flue gas cooling device: the pre-cooling device is provided with a spraying mechanism, water mist is sprayed through a water spraying opening to adsorb and preliminarily cool the particles in the smoke dust, part of the particles still rising are intercepted by an interception net, so that the smoke dust particles are prevented from further rising, and the dust attached to the interception net is shaken down to the bottom plate by a vibrator, and the bottom plate can be disassembled to clean the dust.

[0025] 2. The pre-cooling device for boiler flue gas purification provided by the utility model has the following advantages compared with most of the existing boiler flue gas cooling devices: the pre-cooling device is provided with a cooling mechanism, cooling water is introduced into the finned tube to further cool the smoke dust, and the arrangement of the finned tube is curved, so that the cooling effect of the smoke dust is better. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic view of the pre-cooling device for boiler flue gas purification provided by the utility model;

[0027] Figure 2 FIG. 2 is a sectional view of the pre-cooling device for boiler flue gas purification provided by the utility model;

[0028] Figure 3 FIG. 3 is a structural schematic view of the cooling mechanism in the pre-cooling device for boiler flue gas purification provided by the utility model;

[0029] Figure 4 FIG. 4 is a sectional view of the finned tube in the pre-cooling device for boiler flue gas purification provided by the utility model;

[0030] Figure 5 FIG. 5 is a structural schematic view of the water spraying pipe in the pre-cooling device for boiler flue gas purification provided by the utility model.

[0031] LEGEND:

[0032] 1, shell; 101, the shell; 102, support; 103, bottom plate; 104, soot inlet; 105, soot outlet; 2, spraying mechanism; 201, water spraying pipe; 202, water spraying port; 203, vibrator; 204, intercepting net; 205, motor box; 206, water supply pipe; 3, cooling mechanism; 301, finned tube; 302, tube plate; 303, water pump; 304, water supply pipe one; 305, water supply pipe two; 306, water inlet pipe; 307, water outlet pipe; 308, fixed plate; 4, fan. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Referring to Figures 1-5 , the present application provides an embodiment:

[0035] A pre-cooling device for boiler flue gas purification, comprising a shell 1, the shell 1 comprises a shell 101, the middle part of the inner wall of the shell 1 is fixedly connected with a cooling mechanism 3, the cooling mechanism 3 comprises a fixed plate 308 and a water supply pipe one 304, the upper surface of the fixed plate 308 is fixedly connected with a tube plate 302 on one side, the inner wall of the tube plate 302 is fixedly connected with a plurality of finned tubes 301, the upper end of the outer wall of the tube plate 302 on one side is fixedly connected with a water inlet pipe 306, the lower end of the outer wall of the tube plate 302 is fixedly connected with a water outlet pipe 307, the lower end of the inner wall of the shell 1 is fixedly connected with a spraying mechanism 2, the spraying mechanism 2 comprises an intercepting net 204, one side of the upper surface of the intercepting net 204 is fixedly connected with a vibrator 203, the middle part of the outer wall of the water supply pipe one 304 is fixedly connected with a water supply pipe 206, one end of the water supply pipe 206 away from the water supply pipe one 304 is fixedly connected with a water spraying pipe 201, a plurality of water spraying ports 202 are formed in the lower surface of the water spraying pipe 201.

[0036] The boiler flue gas cooling device is provided with a spraying mechanism 2 and a cooling mechanism 3, and the soot is cooled in multiple ways.

[0037] Water supply pipe 304 is fixedly connected to the end of water inlet pipe 306 away from tube sheet 302. A water pump 303 is fixedly connected to the end of water supply pipe 304 away from water inlet pipe 306. Water supply pipe 305 is fixedly connected to the end of water outlet pipe 307 away from tube sheet 302. By setting up the water pump 303 and water supply pipes, cooling water from the cooling tower is transported to the finned tube 301 and spray pipe 201 to cool the flue gas. Fixing plate 308 is fixedly connected to the upper and middle ends of the inner walls on both sides of the outer shell 101, fixing the finned tube 301 and tube sheet 302. Interception net 204 is fixedly connected to the lower ends of the inner walls on both sides of the outer shell 101. A motor housing 205 is fixedly connected to the outer wall of the outer shell 101, further intercepting dust particles. A motor is placed to provide power to the vibrator 203 and control the vibration frequency. A fan 4 is fixedly connected to the inner top surface of the outer casing 101 to blow the flue gas out of the cooling device. Multiple brackets 102 are fixedly connected to the front and rear outer walls of the outer casing 101 to support the cooling device. A base plate 103 is fixedly connected to the lower surface of the outer casing 101. The base plate 103 is fixed to the outer casing 101 with screws and nuts, so that the base plate 103 can be removed for cleaning after dust particles accumulate at the bottom. A dust inlet 104 is opened at the lower end of one side of the outer wall of the outer casing 101, and a dust outlet 105 is opened at the upper end of the outer wall of the outer casing 101 away from the dust inlet 104. The dust inlet 104 and the dust outlet 105 facilitate connection to the filter and boiler exhaust pipe to facilitate the cooling of the flue gas.

[0038] Working principle: The flue gas inlet 104 of the cooling device is connected to the boiler exhaust pipe. When the flue gas enters the cooling device, the water spray pipe 201 sprays water mist to adsorb the flue gas and perform preliminary cooling. The dust particles settle due to gravity, and some dust particles that are still rising are condensed by the interception net 204. The vibrator 203 on the interception net 204 continuously vibrates the interception net 204, shaking the dust attached to the interception net 204 down to the base plate 103. The base plate 103 can be removed to clean the particles. The cooling mechanism 3 further cools the flue gas. The water inside the cooling mechanism 3 is cooled by the cooling tower and then pumped back to the finned tube 301 by the water pump 303. It can be recycled inside the cooling mechanism 3 to reduce water waste. The cooled flue gas is discharged from the cooling device through the flue gas outlet 105. The fan 4 installed at the flue gas outlet 105 can assist in extracting the flue gas from the device.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A pre-cooling device for cleaning flue gas of a boiler, comprising a housing (1), characterized in that: The shell (1) includes an outer shell (101), the middle part of the inner wall of the shell (1) is fixedly connected with a cooling mechanism (3), the cooling mechanism (3) includes a fixed plate (308) and a water pipe (304), the upper surface of the fixed plate (308) is fixedly connected with a pipe plate (302), the inner wall of the pipe plate (302) is fixedly connected with a plurality of finned tubes (301), the upper end of the outer wall of the pipe plate (302) on one side is fixedly connected with a water inlet pipe (306), the lower end of the outer wall of the pipe plate (302) is fixedly connected with a water outlet pipe (307), the lower end of the inner wall of the shell (1) is fixedly connected with a spraying mechanism (2), the spraying mechanism (2) includes a screen (204), one side of the upper surface of the screen (204) is fixedly connected with a vibrator (203), the middle part of the outer wall of the water pipe (304) is fixedly connected with a water supply pipe (206), the end of the water supply pipe (206) away from the water pipe (304) is fixedly connected with a water spraying pipe (201), and the lower surface of the water spraying pipe (201) is provided with a plurality of water spraying openings (202).

2. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The water pipe (304) is fixedly connected to the end of the water inlet pipe (306) away from the pipe plate (302), the end of the water pipe (304) away from the water inlet pipe (306) is fixedly connected with a water pump (303), and the end of the water outlet pipe (307) away from the pipe plate (302) is fixedly connected with a water pipe (305).

3. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The fixed plate (308) is fixedly connected to the upper end and the middle end of the inner wall of the outer shell (101) on both sides.

4. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The screen (204) is fixedly connected to the lower end of the inner wall of the outer shell (101) on both sides, and the outer wall of the outer shell (101) is fixedly connected with a motor box (205).

5. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The inner top surface of the outer shell (101) is fixedly connected with a fan (4).

6. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The outer wall of the front end and the rear end of the outer shell (101) is fixedly connected with a plurality of supports (102).

7. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The lower surface of the outer shell (101) is fixedly connected with a bottom plate (103).

8. A pre-cooling device for cleaning flue gas of a boiler according to claim 1, characterized in that: The lower end of the outer wall of one side of the outer shell (101) is provided with a smoke inlet (104), and the upper end of the outer wall of the side of the outer shell (101) away from the smoke inlet (104) is provided with a smoke outlet (105).

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