Air and smoke dehumidification assembly for combined heat and power generation boiler

Abstract

The utility model discloses a combined heat and power generation boiler air and smoke dehumidification assembly, which relates to the technical field of smoke treatment of combined heat and power generation boilers, and comprises a primary dehumidification mechanism, a secondary dehumidification mechanism is arranged on the primary dehumidification mechanism, a condensation collection mechanism is arranged on the secondary dehumidification mechanism, and the secondary dehumidification mechanism comprises a plurality of upright posts II; the top end of the shell is fixedly connected with a plurality of first mounting plates, the bottom ends of the first mounting plates are fixedly connected with a plurality of condensation pieces, the rear end of the shell is fixedly connected with a smoke outlet pipe, and the front end of the shell is fixedly connected with a second smoke inlet pipe. The device has the beneficial effects that dehumidification is carried out by arranging the spiral flow channel and the condensation pieces, the flue gas dehydration efficiency is improved, the gas-liquid separation effect is enhanced through the spiral baffling condensation section of the spiral flow channel, and the condensation collection mechanism is arranged at the bottom end. In the mechanism, the replaceable filter screen can be rapidly replaced and regenerated through the drawing type design, and meanwhile, the condensation collecting mechanism collects water to conduct condensation and dehumidification on the first-stage dehumidification mechanism again.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology for cogeneration boilers, and in particular to a flue gas dehumidification component for cogeneration boilers. Background Technology

[0002] Cogeneration is an industrial process technique that utilizes waste heat from power generation for industrial manufacturing or uses waste heat from industrial manufacturing to generate electricity, achieving the goal of maximizing energy utilization. Cogeneration uses a heat engine or power plant to simultaneously generate electricity and useful heat. The flue gas system provides sufficient oxygen to the fuel, promoting complete and rapid combustion and providing more heat to the boiler. Flue gas dehumidification can better provide fuel. Therefore, we propose a high-efficiency and energy-saving flue gas dehumidification component for cogeneration boilers.

[0003] For example, patent document CN221182258U discloses a flue gas dehumidification component for a cogeneration boiler. The flue gas generated by the cogeneration boiler is connected to the flue gas inlet, allowing it to enter the dehumidification chamber. Below the spray mechanism, a motor rotates, causing a rotating shaft to drive a drive gear. A driven gear, connected by a second connecting rod, rotates around the drive gear. Under the action of the first connecting rod, a slider reciprocates between slide plates, achieving reciprocating spraying from the nozzles, thus widening the spray range. After spraying, water vapor condenses and enters the bottom of the dehumidification chamber, then flows through a pipe into a water pump, and finally re-enters the spray mechanism via a water supply pipe, achieving reuse. A protective pipe protects the spray mechanism. The dehumidified flue gas passes through a filter screen to remove impurities before being discharged from the flue gas outlet.

[0004] Traditional boiler flue gas dehumidification devices often employ a single condensation or adsorption process, which has problems such as insufficient dehumidification depth, cumbersome adsorbent replacement, high energy consumption during regeneration, and waste of waste heat resources. At the same time, in high humidity environments, the condensation structure is prone to ash and scale buildup, leading to poor drainage and affecting the long-term stable operation of the system. Utility Model Content

[0005] The purpose of this invention is to provide a dehumidification component for the flue gas of a cogeneration boiler in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A combined heat and power boiler flue gas dehumidification assembly includes a primary dehumidification mechanism, a secondary dehumidification mechanism mounted on the primary dehumidification mechanism, and a condensation collection mechanism mounted on the secondary dehumidification mechanism. The secondary dehumidification mechanism includes multiple columns II, with a housing fixedly connected to the top of each column II. Multiple mounting plates I are fixedly connected to the top of the housing, and multiple condensation fins are fixedly connected to the bottom of the mounting plates I. A flue gas outlet pipe is fixedly connected to the rear end of the housing, and a flue gas inlet pipe II is fixedly connected to the front end of the housing. An impeller is rotatably connected inside the flue gas outlet pipe, and multiple drive shafts are rotatably connected to the flue gas outlet pipe. Multiple reciprocating screws are rotatably connected to both ends of the housing. The reciprocating screws and drive shafts are meshed with each other through bevel gears, and the drive shafts and impellers are meshed with each other through bevel gears. A slider is threadedly connected to the reciprocating screw, and the slider is slidably connected to the housing. A scraper is fixedly connected to one end of the slider.

[0008] Preferably, the primary dehumidification mechanism includes multiple columns 1, with a condenser shell fixedly connected to the top of each column 1, an inner shell fixedly connected inside the condenser shell, a smoke inlet pipe 1 fixedly connected to the front end of the inner shell, a spiral flow channel fixedly connected inside the inner shell, and two water pipes fixedly connected to the bottom end of the inner shell. The inner shell is fixedly connected to the front end of the second smoke inlet pipe.

[0009] Preferably, the condensate collection mechanism includes a water collection tank, which is fixedly connected to column one and column two. A mounting plate two is fixedly connected to the top of the water collection tank. Two replaceable filters are slidably connected inside the mounting plate two. Multiple overflow ports are opened at the rear end of the water collection tank. Two installation ports are opened on the front side of the top of the water collection tank, and water pipes are fixedly connected to the top of the installation ports.

[0010] Preferably, the surfaces of the condenser plate and the spiral flow channel are coated with a hydrophobic material.

[0011] Preferably, the drive shaft is made of heat-resistant bearing steel.

[0012] Preferably, an ultrasonic atomizer is installed in the groove at the bottom of the outer casing.

[0013] The beneficial effects are as follows: by setting up a spiral flow channel and condenser plates for dehumidification, the efficiency of flue gas dehydration is improved; the spiral baffle condensation section of the spiral flow channel enhances the gas-liquid separation effect; and a condensation collection mechanism is set at the bottom. In this mechanism, the replaceable filter screen can be quickly replaced and regenerated through a pull-out design. At the same time, the condensation collection mechanism collects water for secondary condensation and dehumidification of the primary dehumidification mechanism.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through practical application of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is an isometric view of a combined heat and power boiler flue gas dehumidification component according to the present invention;

[0017] Figure 2 This is an isometric view of the primary dehumidification mechanism of the flue gas dehumidification assembly for a cogeneration boiler described in this utility model;

[0018] Figure 3 This is a front sectional view of the primary dehumidification mechanism of the flue gas dehumidification assembly for a cogeneration boiler described in this utility model;

[0019] Figure 4 This is an isometric view of the condensation collection mechanism of the flue gas dehumidification component of a cogeneration boiler described in this utility model;

[0020] Figure 5 This is an isometric view of the secondary dehumidification mechanism of the flue gas dehumidification component of a cogeneration boiler described in this utility model;

[0021] Figure 6 This is a top sectional view of the secondary dehumidification mechanism of the flue gas dehumidification component of a cogeneration boiler described in this utility model;

[0022] Figure 7 This is an isometric view of the mounting plate of the flue gas dehumidification component of a cogeneration boiler described in this utility model;

[0023] Figure 8 This utility model describes a flue gas dehumidification component for a cogeneration boiler. Figure 5 A partial view of A in the middle.

[0024] The reference numerals in the attached drawings are explained as follows: 101, Column 1; 102, Condenser shell; 103, Inner shell; 104, Smoke inlet pipe 1; 105, Water pipe; 106, Spiral flow channel; 201, Column 2; 202, Outer shell; 203, Mounting plate 1; 204, Condenser fin; 205, Smoke inlet pipe 2; 206, Smoke outlet pipe; 207, Impeller; 208, Drive shaft; 209, Reciprocating screw; 210, Slider; 211, Scraper; 301, Water collection tank; 302, Mounting plate 2; 303, Replaceable filter screen; 304, Overflow outlet; 305, Mounting port. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] like Figures 1-8 As shown, a combined heat and power boiler flue gas dehumidification assembly includes a primary dehumidification mechanism, a secondary dehumidification mechanism mounted on the primary dehumidification mechanism, and a condensation collection mechanism mounted on the secondary dehumidification mechanism. The secondary dehumidification mechanism includes multiple columns 201, with a housing 202 welded to the top of each column 201. Multiple mounting plates 203 are bolted to the top of the housing 202, and multiple condenser fins 204 are screwed to the bottom of the mounting plates 203. A flue gas outlet pipe 206 is bolted to the rear end of the housing 202, and a flue gas inlet pipe 205 is welded to the front end of the housing 202. An impeller 207 is rotatably connected inside the flue gas outlet pipe 206, and multiple drive shafts 208 are rotatably connected to the flue gas outlet pipe 206. Multiple reciprocating screws 209 are rotatably connected to both ends of the housing 202. The reciprocating screws 209 and the drive shafts 208 mesh with each other through bevel gears, and the drive shafts 208 and the impellers 207 mesh with each other through bevel gears, reciprocating... A slider 210 is threaded onto the lead screw 209. The slider 210 is slidably connected to the outer casing 202. A scraper 211 is bolted to one end of the slider 210. The bottom of the condenser shell 102 is V-shaped and has a water collection tank to facilitate water inflow. A water outlet is provided at the bottom front end of the column 201. A bevel gear is installed at the rear end of the impeller 207. Bevel gears are installed at both ends of the drive shaft 208. A bevel gear is installed at one end of the reciprocating lead screw 209. The impeller 207 meshes with the drive shaft 208, and the drive shaft 208 meshes with the reciprocating lead screw 209. When the flue gas generated by the cogeneration boiler passes through the impeller 207, the impeller 207 rotates, driving the drive shaft 208 to rotate. The drive shaft 208 drives the reciprocating lead screw 209 to rotate. After the reciprocating lead screw 209 rotates, the slider 210 slides back and forth on the reciprocating lead screw 209. A scraper 211 is connected to the slider 210 to complete the cleaning of the inner wall of the tank.

[0029] The primary dehumidification mechanism includes multiple columns 101. A condenser shell 102 is welded to the top of each column 101. An inner shell 103 is bolted inside the condenser shell 102. An inlet pipe 104 is welded to the front end of the inner shell 103. A spiral flow channel 106 is welded inside the inner shell 103. Two water pipes 105 are welded to the bottom end of the inner shell 103. The inner shell 103 is bolted to the front end of the second inlet pipe 205. There is a water outlet at the rear end of the condenser shell 102. Condensation water channels are distributed inside the condenser shell 102. Two water pipes 105 are installed at the bottom end of the condenser shell 102, one for water inlet and one for water return.

[0030] The condensate collection mechanism includes a water collection tank 301, which is bolted to a first column 101 and a second column 201. A second mounting plate 302 is bolted to the top of the water collection tank 301. Two replaceable filters 303 are slidably connected inside the second mounting plate 302. Multiple overflow ports 304 are opened at the rear end of the water collection tank 301. Two mounting ports 305 are opened on the front side of the top of the water collection tank 301. A water pipe 105 is bolted to the top of the mounting port 305. The water outlet of the inner shell 103 and the water outlet of the outer shell 202 are welded to the top of the second mounting plate 302. The replaceable filters 303 can be pulled out from the second mounting plate 302 for cleaning or replacement. An electric pump is installed inside the water collection tank 301 to pump the water inside the water collection tank 301 into the condensate shell 102 through the water pipe 105.

[0031] The surfaces of the condenser plate 204 and the spiral flow channel 106 are coated with a hydrophobic material, which allows condensate to quickly gather into beads on the surface and roll off automatically, washing away adhering contaminants and achieving a dynamic self-cleaning function.

[0032] The drive shaft 208 is made of heat-resistant bearing steel. The flue gas produced by the cogeneration boiler is high-temperature gas, and the drive shaft 208 is made of heat-resistant bearing steel to prevent deformation in high-temperature environments.

[0033] An ultrasonic atomizer is installed in the groove at the bottom of the outer casing 202, which is activated periodically to prevent dust and scale buildup.

[0034] Working principle: First, the electric pump in the water collection tank 301 is started, pumping the water inside the water collection tank 301 into the condenser shell 102 through the water pipe 105. Then, the flue gas generated by the cogeneration boiler is introduced into the flue gas inlet pipe 104. The flue gas flows into the spiral channel 106 through the flue gas inlet pipe 104. Under the spiral structure of the spiral channel 106, the flue gas undergoes preliminary cooling and dehumidification. Water drips from the spiral channel 106 into the bottom end of the inner shell 103, and flows into the mounting plate 302 through the outlet at the bottom end. After being filtered by the replaceable filter screen 303, the water is discharged into the water collection tank 301. The flue gas that has undergone preliminary cooling and dehumidification flows into the secondary dehumidification mechanism through the flue gas inlet pipe 205 for secondary condensation. The flue gas passes through the condenser plate 2. 04. Condensation is completed. The condensed water drips from the condenser plate 204 onto the outer shell 202. The water in the outer shell 202 flows to the bottom of the outer shell 202, through the water collection tank at the bottom of the outer shell 202 to the outlet, and finally flows into the mounting plate 302. After being filtered by the replaceable filter screen 303, the water is discharged into the water collection tank 301. The exhaust gas after dehumidification flows out through the exhaust pipe 206. As it flows out, it drives the impeller 207 to rotate. The rotation of the impeller 207 drives the drive shaft 208 to rotate. The drive shaft 208 drives the reciprocating screw 209 to rotate. After the reciprocating screw 209 rotates, the slider 210 slides back and forth on the reciprocating screw 209. The slider 210 is connected to the scraper 211 to clean the inner wall of the tank.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A combined heat and power boiler air flue dehumidification assembly, comprising a primary dehumidification mechanism, a secondary dehumidification mechanism arranged on the primary dehumidification mechanism, and a condensate collection mechanism arranged on the secondary dehumidification mechanism, characterized in that: The secondary dehumidification mechanism comprises a plurality of second columns (201), the top end of the second column (201) is fixedly connected with an outer shell (202), the top end of the outer shell (202) is fixedly connected with a plurality of mounting plates (203), the bottom end of the mounting plate (203) is fixedly connected with a plurality of condensation pieces (204), the rear end of the outer shell (202) is fixedly connected with a smoke outlet pipe (206), the front end of the outer shell (202) is fixedly connected with a second smoke inlet pipe (205), the smoke outlet pipe (206) is rotatably connected with an impeller (207), a plurality of transmission shafts (208) are rotatably connected on the smoke outlet pipe (206), a plurality of reciprocating lead screws (209) are rotatably connected at the two ends of the outer shell (202), the reciprocating lead screw (209) and the transmission shaft (208) are meshed with each other through bevel gears, the transmission shaft (208) and the impeller (207) are meshed with each other through bevel gears, a sliding block (210) is threadedly connected on the reciprocating lead screw (209), the sliding block (210) and the outer shell (202) are slidably connected, and a scraper (211) is fixedly connected at one end of the sliding block (210).

2. The combined heat and power boiler flue gas dehumidification assembly according to claim 1, characterized in that: The primary dehumidification mechanism comprises a plurality of first columns (101), the top end of the first column (101) is fixedly connected with a condensation shell (102), the inner end of the condensation shell (102) is fixedly connected with an inner shell (103), the front end of the inner shell (103) is fixedly connected with a first smoke inlet pipe (104), the inner shell (103) is fixedly connected with a spiral flow channel (106), the bottom end of the inner shell (103) is fixedly connected with two water pipes (105), and the inner shell (103) is fixedly connected at the front end of the second smoke inlet pipe (205).

3. A combined heat and power boiler flue gas dehumidification assembly according to claim 2, wherein: The condensation collection mechanism comprises a water collecting tank (301), the water collecting tank (301) is fixedly connected on the first column (101) and the second column (201), the top end of the water collecting tank (301) is fixedly connected with a mounting plate (302), two replaceable screens (303) are slidably connected in the mounting plate (302), a plurality of overflow openings (304) are formed at the rear end of the water collecting tank (301), two mounting openings (305) are formed at the top front side of the water collecting tank (301), and the water pipes (105) are fixedly connected at the top end of the mounting openings (305).

4. The combined heat and power boiler flue gas dehumidification assembly of claim 2, wherein: The surfaces of the condensation pieces (204) and the spiral flow channel (106) are coated with a hydrophobic material.

5. The combined heat and power boiler flue gas dehumidification assembly of claim 1, wherein: The transmission shaft (208) is made of heat-resistant bearing steel material.

6. A combined heat and power boiler flue gas dehumidification assembly according to claim 1, wherein: An ultrasonic atomizer is installed in the groove at the bottom end of the outer shell (202).

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