Waste heat recovery equipment of waste heat boiler

Abstract

The utility model discloses waste heat boiler waste heat recovery equipment which comprises a recovery box, a liquid inlet pipe is arranged in the middle of the top end of the recovery box, one end of the liquid inlet pipe penetrates through the recovery box to be connected with a spraying pipe, a heat exchange pipe is installed in the recovery box, and the upper portion of the heat exchange pipe penetrates through the recovery box to be connected with a water inlet pipe. The waste heat recovery device has the advantages that the liquid inlet pipe is arranged in the middle of the top end of the recovery box, when a large number of impurities accumulate on the outer wall of the heat exchange pipe, the pipe wall is thickened and needs to be cleaned, cleaning liquid is introduced into the spraying pipe through the liquid inlet pipe, the spraying pipe can spray the cleaning liquid on the heat exchange pipe, and at the moment, the motor is started to drive the screw to rotate; the cleaning frame can be driven to move up and down outside the heat exchange tube, impurities adhering to the outer wall of the heat exchange tube can be brushed away conveniently, thickening of the tube wall of the heat exchange tube caused by adhesion of the impurities is prevented, and then the absorption efficiency of water in the heat exchange tube to heat in smoke can be prevented from being affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery equipment technical field, concretely relates to a waste heat boiler waste heat recovery equipment. BACKGROUND

[0002] The heating of the boiler is mostly using coal as fuel heating, resulting in a large amount of harmful gas in the combustion heating process, if the gas produced by combustion is not treated, the environment will be polluted, and the gas at the combustion exhaust port is also entrained with a large amount of waste heat, so it is necessary to use waste heat recovery equipment to utilize the heat of flue gas.

[0003] The existing waste heat boiler waste heat recovery equipment in the use process, although the flue gas is made into the recovery tank through the air inlet pipe, the heat of the flue gas is taken away by the water in the heat exchange pipe, but the flue gas produced by the combustion of coal contains tar, part of the tar will adhere to the outer wall of the pipeline in the process of flue gas contacting with the heat exchange pipe, long-term accumulation will cause the thickness of the heat exchange pipe wall to increase, and then the heat absorption efficiency of the water in the heat exchange pipe to the heat in the flue gas will be affected, therefore, a new type of waste heat boiler waste heat recovery equipment is urgently needed to solve these problems. UTILITY MODEL CONTENTS

[0004] (I) Technical problem to be solved

[0005] The technical problem to be solved by the utility model is to provide a waste heat boiler waste heat recovery equipment capable of avoiding the influence of pipe wall thickening on heat exchange efficiency in view of the status of the prior art.

[0006] (II) Technical scheme

[0007] The utility model discloses a waste heat boiler waste heat recovery equipment, including recovery tank, the recovery tank top centre is provided with liquid inlet pipe, one end of liquid inlet pipe penetrates recovery tank and is connected with spray pipe, recovery tank is installed with heat exchange pipe, the heat exchange pipe top penetrates recovery tank and is connected with water inlet pipe, the heat exchange pipe lower side penetrates recovery tank and is provided with water outlet pipe, recovery tank top one side is installed with motor, motor power output shaft penetrates recovery tank and is connected with screw rod, recovery tank is fixed with slide rod in the symmetry away from one side of screw rod, be provided with cleaning frame on slide rod and screw rod, recovery tank bottom centre is installed with blowdown pipe.

[0008] Further, the filter box is installed on the lower side of the one side wall of the recovery tank, the filter plate and the adsorption plate are arranged in the filter box, the air inlet pipe is connected to the one side wall of the filter box, and the exhaust pipe is arranged on the other side of the top end of the recovery tank.

[0009] By adopting the technical scheme, the recovery box can more stably fix the filter box, and the filter plate and the adsorption plate can better filter and adsorb impurities in flue gas.

[0010] Further, the liquid inlet pipe is threadedly connected with the spraying pipe, the recovery box is boltedly connected with the heat exchange pipe, and the heat exchange pipe is made of stainless steel.

[0011] By adopting the technical scheme, the liquid inlet pipe can better deliver cleaning liquid into the spraying pipe, and the spraying pipe can spray the cleaning liquid on the outer wall of the heat exchange pipe.

[0012] Further, the recovery box is boltedly connected with the filter box, the filter plate and the adsorption plate are both boltedly connected with the filter plate, and the filter box is threadedly connected with the air inlet pipe.

[0013] By adopting the technical scheme, the filter box can more stably fix the filter plate and the adsorption plate, and the air inlet pipe can better discharge flue gas into the filter box.

[0014] Further, the water inlet pipe and the water outlet pipe are both threadedly connected with the heat exchange pipe, the recovery box is boltedly connected with the motor, and the motor is key-connected with the screw rod.

[0015] By adopting the technical scheme, the water inlet pipe can more conveniently input water into the heat exchange pipe, the water outlet pipe can discharge water after the heat exchange pipe takes away heat of flue gas, the recovery box can more stably fix the motor, and the motor can more conveniently drive the screw rod to rotate.

[0016] Further, the recovery box is threadedly connected with the smoke exhaust pipe, and the bottom end of the recovery box is circumferentially provided with a supporting column.

[0017] By adopting the technical scheme, the recovery box can more stably fix the smoke exhaust pipe, the smoke exhaust pipe can discharge flue gas after taking away heat, and the supporting column can more conveniently support the recovery box.

[0018] Further, the screw rod is rotationally connected with the recovery box, the recovery box is welded with the slide rod, and the cleaning frame is threadedly connected with the screw rod.

[0019] By adopting the technical scheme, the rotation of the screw rod can more conveniently drive the cleaning frame to move up and down, the recovery box can more stably fix the slide rod, and the slide rod can limit the movement of the cleaning frame.

[0020] Furthermore, the slide rod and the heat exchange tube are slidably connected to the cleaning frame, and the recycling box is threadedly connected to the sewage pipe.

[0021] By adopting the above technical solution, the up-and-down movement of the cleaning frame can better brush away the impurities adhering to the outer wall of the heat exchange tube, avoiding the impurities adhering to the outer wall of the heat exchange tube and affecting the efficiency of water absorbing heat from the flue gas. The drain pipe can discharge the brushed impurities and cleaning wastewater.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] To address the problem that existing waste heat recovery equipment for coal combustion produces tar-containing flue gas, some of which adheres to the outer wall of the heat exchange tubes during contact with the flue gas. Over time, this accumulation increases the tube wall thickness, affecting the efficiency of heat absorption by the water inside the tubes. This invention addresses this issue by installing a liquid inlet pipe centrally at the top of the recovery tank. When a large amount of impurities accumulates on the outer wall of the heat exchange tubes, causing wall thickening and requiring cleaning, cleaning fluid is introduced through the inlet pipe into a spray pipe. The spray pipe sprays the cleaning fluid onto the heat exchange tubes. Simultaneously, a motor is activated, driving a screw to rotate, which in turn moves a cleaning frame up and down around the heat exchange tubes, effectively brushing away the adhering impurities and preventing further wall thickening. This, in turn, avoids affecting the efficiency of heat absorption by the water inside the tubes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a waste heat recovery device for a waste heat boiler according to the present invention;

[0026] Figure 2 This is a main sectional view of a waste heat recovery device for a waste heat boiler as described in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the heat exchange tube in the waste heat recovery equipment of the waste heat boiler described in this utility model;

[0028] Figure 4 This is a schematic diagram of the cleaning frame in a waste heat recovery device for a waste heat boiler as described in this utility model.

[0029] The annotations in the attached figures are explained as follows:

[0030] 1. Recycling bin; 2. Liquid inlet pipe; 3. Spray pipe; 4. Heat exchange pipe; 5. Water inlet pipe; 6. Water outlet pipe; 7. Motor; 8. Screw; 9. Slide rod; 10. Cleaning frame; 11. Sewage discharge pipe; 12. Filter box; 13. Filter plate; 14. Adsorption plate; 15. Air inlet pipe; 16. Smoke exhaust pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will make further detailed description to the utility model combining with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0032] As Figures 1-4 shown, the waste heat boiler waste heat recovery equipment in the embodiment, including recovery tank 1, recovery tank 1 top end is centrally provided with liquid inlet pipe 2, and one end of liquid inlet pipe 2 is connected with spray pipe 3 and penetrates recovery tank 1, liquid inlet pipe 2 can better transport cleaning liquid to spray pipe 3, spray pipe 3 can spray cleaning liquid on the outer wall of heat exchange tube 4, recovery tank 1 is installed with heat exchange tube 4, and water inlet pipe 5 is connected and penetrates recovery tank 1 above heat exchange tube 4, and water outlet pipe 6 is arranged and penetrates recovery tank 1 below heat exchange tube 4, motor 7 is installed on one side of recovery tank 1 top end, power output shaft of motor 7 is connected with screw rod 8 and penetrates recovery tank 1, water inlet pipe 5 can more conveniently input water into heat exchange tube 4, water outlet pipe 6 can be discharged after water in heat exchange tube 4 carries away flue gas heat, recovery tank 1 can more stably fix motor 7, motor 7 can more conveniently drive screw rod 8 to rotate, recovery tank 1 is fixed with slide rod 9 on the side away from screw rod 8, and cleaning frame 10 is arranged on screw rod 8 and slide rod 9, screw rod 8 rotation can better drive cleaning frame 10 to move up and down, recovery tank 1 can more stably fix slide rod 9, and slide rod 9 can limit the movement of cleaning frame 10, and blowdown pipe 11 is centrally installed at the bottom end of recovery tank 1, cleaning frame 10 moves up and down can better brush off the impurities adhered to the outer wall of heat exchange tube 4, avoid that the impurities adhere to the outer wall of heat exchange tube 4 and influence the efficiency that water absorbs heat in flue gas, and blowdown pipe 11 can discharge the impurities and cleaning sewage brushed.

[0033] As Figures 1-4As shown, in this embodiment, the recovery box 1 is provided with a filter box 12 below one side wall, the filter box 12 is provided with a filter plate 13 and an adsorption plate 14, one side wall of the filter box 12 is connected with an air inlet pipe 15, the other side of the top end of the recovery box 1 is provided with an exhaust pipe 16, the recovery box 1 can more stably fix the filter box 12, the filter plate 13 and the adsorption plate 14 can better filter and adsorb impurities in the flue gas, the liquid inlet pipe 2 is threadedly connected with the spraying pipe 3, the recovery box 1 is bolted with the heat exchange pipe 4, the heat exchange pipe 4 is made of stainless steel, the recovery box 1 is bolted with the filter box 12, the filter plate 13 and the adsorption plate 14 are bolted with the filter plate 13, the filter box 12 is threadedly connected with the air inlet pipe 15, the filter box 12 can more stably fix the filter plate 13 and the adsorption plate 14, the air inlet pipe 15 can better discharge the flue gas into the filter box 12, the water inlet pipe 5 and the water outlet pipe 6 are threadedly connected with the heat exchange pipe 4, the recovery box 1 is bolted with the motor 7, the motor 7 is keyed with the screw rod 8, the recovery box 1 is threadedly connected with the exhaust pipe 16, the bottom end of the recovery box 1 is circumferentially provided with a support column, the recovery box 1 can more stably fix the exhaust pipe 16, the exhaust pipe 16 can discharge the flue gas after the heat is taken away from the recovery box 1, the support column can more conveniently support the recovery box 1, the screw rod 8 is rotationally connected with the recovery box 1, the recovery box 1 is welded with the slide rod 9, the cleaning frame 10 is threadedly connected with the screw rod 8, the slide rod 9 and the heat exchange pipe 4 are slidably connected with the cleaning frame 10, the recovery box 1 is threadedly connected with the blowdown pipe 11.

[0034] The specific implementation process of this embodiment is as follows: in use, first, the flue gas is discharged into the filter box 12 through the air inlet pipe 15, the filter box 12 can first filter the impurities in the flue gas entering the recovery box 1, after the flue gas enters the recovery box 1, water is injected into the heat exchange pipe 4 through the water inlet pipe 5, so that the flue gas contacts the heat exchange pipe 4, and the heat in the flue gas is taken away by the water, by centrally arranging the liquid inlet pipe 2 at the top end of the recovery box 1, when a large amount of impurities accumulate on the outer wall of the heat exchange pipe 4 to thicken the pipe wall and need to be cleaned, the cleaning liquid is introduced into the spraying pipe 3 through the liquid inlet pipe 2, the spraying pipe 3 can spray the cleaning liquid on the heat exchange pipe 4, at this time, the motor 7 is started to drive the screw rod 8 to rotate, which can drive the cleaning frame 10 to move up and down outside the heat exchange pipe 4, which is convenient for brushing off the impurities adhered to the outer wall of the heat exchange pipe 4, preventing the impurities from adhering to thicken the pipe wall of the heat exchange pipe 4, thereby avoiding affecting the absorption efficiency of the water in the heat exchange pipe 4 on the heat in the flue gas.

[0035] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A waste heat boiler waste heat recovery apparatus, characterized by: The utility model provides a recycling bin, the recycling bin (1) top is provided with liquid inlet pipe (2) in the middle, one end of liquid inlet pipe (2) is connected with spray pipe (3) through recycling bin (1), recycling bin (1) is installed with heat exchange pipe (4), the top of heat exchange pipe (4) is connected with water inlet pipe (5) through recycling bin (1), the lower side of heat exchange pipe (4) is provided with water outlet pipe (6) through recycling bin (1), the top of recycling bin (1) one side is installed with motor (7), the power output shaft of motor (7) is connected with screw rod (8) through recycling bin (1), the lower side of recycling bin (1) is symmetrically fixed with slide rod (9) away from screw rod (8), slide rod (9) and screw rod (8) are provided with cleaning frame (10), the bottom of recycling bin (1) is installed with blowdown pipe (11) in the middle.

2. A waste heat recovery apparatus of a waste heat boiler according to claim 1, characterized in that: The lower side of the side wall of the recycling bin (1) is provided with a filter box (12), the filter box (12) is provided with a filter plate (13) and an adsorption plate (14), and the side wall of the filter box (12) is connected with an air inlet pipe (15). The other side of the top of the recycling bin (1) is provided with a smoke exhaust pipe (16).

3. A waste heat recovery apparatus of a waste heat boiler according to claim 1, characterized in that: The liquid inlet pipe (2) and the spray pipe (3) are threadedly connected, the recycling bin (1) and the heat exchange pipe (4) are bolted, and the heat exchange pipe (4) is made of stainless steel.

4. A waste heat recovery apparatus of a waste heat boiler according to claim 2, characterized in that: The recycling bin (1) and the filter box (12) are bolted, the filter plate (13) and the adsorption plate (14) are bolted, and the filter box (12) and the air inlet pipe (15) are threadedly connected.

5. A waste heat recovery apparatus of a waste heat boiler according to claim 1, characterized in that: The water inlet pipe (5) and the water outlet pipe (6) are threadedly connected with the heat exchange pipe (4), the recycling bin (1) and the motor (7) are bolted, and the motor (7) and the screw rod (8) are keyed.

6. A waste heat recovery apparatus of a waste heat boiler according to claim 2, characterized by: The recycling bin (1) and the smoke exhaust pipe (16) are threadedly connected, and the bottom of the recycling bin (1) is circumferentially provided with a support column.

7. A waste heat recovery apparatus of a waste heat boiler according to claim 1, characterized by: The screw rod (8) is rotatably connected with the recycling bin (1), the recycling bin (1) is welded with the slide rod (9), and the cleaning frame (10) is threadedly connected with the screw rod (8).

8. A waste heat recovery apparatus of a waste heat boiler according to claim 1, characterized by: The slide rod (9) and the heat exchange pipe (4) are slidably connected with the cleaning frame (10), and the recycling bin (1) and the blowdown pipe (11) are threadedly connected.

Images