Tail gas condensing tank and tail gas condensing equipment

Abstract

The utility model relates to tail gas treatment technical field discloses a tail gas condensing tank and tail gas condensing equipment, the tail gas condensing tank includes jar body, the gas pipe that sets up in inclination, spiral flow guide plate, inner tube, the inner tube inside is equipped with filler layer, baffle demister. Form the cyclone through the spiral flow guide plate of downward cyclone, the big granule liquid drop in the tail gas is thrown to the jar wall under the centrifugal force, avoids the big granule direct impact filler layer, prevents the jam or structural damage. The airflow ascends and discharges after further purification through the filler layer, top baffle demister, and three -stage separation can improve the liquid drop separation efficiency, and, the big granule has been removed before entering the filler layer, only relies on the airflow kinetic energy and realizes the separation, reduces the operation cost. The tail gas condensing equipment with tail gas condensing tank provided by the utility model also has corresponding advantages.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and specifically discloses an exhaust gas condenser and an exhaust gas condensation device having the exhaust gas condenser. Background Technology

[0002] Chemical production processes generate a large amount of exhaust gas, which often contains a significant amount of particulate matter. Direct emission of this gas can cause environmental pollution. Exhaust gas condensers are mainly used to treat condensate from industrial waste gas. An exhaust gas condenser typically includes a tank body, an inlet, an outlet, and a drain outlet.

[0003] Existing exhaust gas condenser equipment typically includes a water-cooled cylinder and a tank body. An inlet pipe is fixedly connected to the top of the water-cooled cylinder, and an air pump is fixedly connected to one side of the exhaust gas condenser. A connecting pipe is fixedly connected to one end of the air pump, and the top of the connecting pipe and the bottom of the inlet pipe are fixedly connected to an air chamber. Multiple branch pipes are fixedly connected between the two air chambers. Through the cooperation of the left inlet chilled water pipe, the left outlet chilled water pipe, the air chamber, and the branch pipes, the exhaust gas comes into contact with the chilled water for heat exchange.

[0004] In the aforementioned prior art, the exhaust gas enters the tank body directly after pre-cooling. Particulate matter and fine droplets directly contact the grid mesh, causing large particles (such as tar and dust) to quickly clog the grid mesh pores, reducing gas permeability. Furthermore, the tiny droplets are not effectively intercepted and escape with the gas, resulting in insufficient separation efficiency. Therefore, an exhaust gas condenser is needed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a tail gas condenser that can effectively avoid clogging, improve droplet separation efficiency, and reduce operating costs. Another purpose of this invention is to provide a tail gas condensation device including the aforementioned tail gas condenser.

[0006] To achieve the above objectives, this utility model provides a tail gas condenser, comprising a tank body with a cooling jacket on its outer wall, the cooling jacket being connected to an inlet pipe and an outlet pipe, an inclined air inlet pipe being connected to the top of the tank body, a spiral guide plate swirling from top to bottom being provided inside the tank body, and an inner cylinder surrounded by the spiral guide plate; the bottom of the inner cylinder is provided with an air inlet, a packing layer is provided inside, a baffle plate demister is provided at the top of the inner cylinder, and an exhaust pipe penetrating through and extending to the outside of the tank body is connected to its top, an induced draft fan being installed on the outer wall of the exhaust pipe; and a drain pipe is connected to the bottom of the tank body.

[0007] Preferably, the drain pipe is equipped with a detachable filter assembly.

[0008] Preferably, the filter assembly includes a threaded cylinder threaded to the outer wall of the drain pipe and a filter screen detachably connected to the inside of the threaded cylinder by bolts.

[0009] Preferably, the drain pipe has a conical structure.

[0010] Preferably, the angle between the air intake direction of the air intake pipe and the axis of the inner cylinder is in the range of 55 degrees to 85 degrees.

[0011] Preferably, the packing layer is ceramic corrugated packing.

[0012] Preferably, the can body and the inner cylinder are detachably connected.

[0013] Preferably, the top of the inner wall of the tank body is fixedly connected to an installation cylinder that is threadedly connected to the inner cylinder.

[0014] Preferably, the outer wall of the tank body is provided with heat dissipation fins.

[0015] This utility model also provides an exhaust gas condensation device, including the exhaust gas condensation tank described in any of the above claims.

[0016] The exhaust gas condenser provided by this utility model forms a swirling flow through a downward spiral guide plate. Large droplets in the exhaust gas are thrown towards the tank wall under the action of centrifugal force. The droplets flow down the wall of the tank body to the bottom of the tank, thereby initially separating the large droplets and avoiding direct impact of large particles on the packing layer, thus preventing blockage or structural damage.

[0017] Furthermore, the rising airflow passes through the packing layer, where it further captures small droplets through collision and coalescence, causing the droplets to be intercepted and coalesce into a falling mass. The dry gas is then further purified by the top baffle demister before being discharged. Subsequently, through the three-stage separation of the spiral guide plate, the packing layer, and the baffle demister, droplets of all sizes can be intercepted, improving droplet separation efficiency. Moreover, large particles are removed before entering the packing layer, reducing the risk of blockage. The spiral guide plate does not require additional power, relying solely on the kinetic energy of the airflow to achieve separation, thus reducing operating costs.

[0018] The tail gas condensation device with a tail gas condensation tank provided by this utility model also has corresponding advantages, which will not be elaborated further. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the exhaust gas condenser provided by the present invention in one specific embodiment.

[0021] Figure 2 for Figure 1 A cross-sectional view.

[0022] Figure 3 for Figure 1 Another cross-sectional view.

[0023] Figures 1 to 3 The accompanying figure labels are as follows:

[0024] 1. Tank body; 101. Air inlet pipe; 102. Drain pipe; 103. Threaded cylinder; 104. Filter screen; 2. Spiral guide plate; 3. Inner cylinder; 301. Air inlet; 302. Packing layer; 303. Baffle demister; 304. Exhaust pipe; 305. Mounting cylinder; 4. Cooling jacket. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The core of this invention is to provide a tail gas condenser that effectively avoids clogging, improves droplet separation efficiency, and reduces operating costs. Another core aspect of this invention is to provide a tail gas condensation device that includes the aforementioned tail gas condenser.

[0027] Please see Figures 1-3 In one specific embodiment, the exhaust gas condenser provided by this utility model includes a tank body 1 with an air inlet pipe 101 connected to the upper end face. The air inlet pipe 101 is inclined and its air inlet direction is within the range of 55 degrees to 85 degrees with the vertical direction or the axis of the inner cylinder 3 mentioned below.

[0028] The outer wall of the tank body 1 is provided with a cooling jacket 4, and the outer wall of the cooling jacket 4 is connected to an inlet pipe and an outlet pipe; the interior of the tank body 1 is provided with a gas-liquid separation component, and the bottom end of the tank body 1 is threadedly connected with a drain pipe 102, and the outer wall of the drain pipe 102 is provided with a detachable filter component.

[0029] The gas-liquid separation assembly may specifically include an inner cylinder 3 disposed inside the tank body 1 and having a sealing cover on its outer wall, an air inlet 301 connected to the bottom of the inner cylinder 3, a packing layer 302 installed inside the inner cylinder 3, a baffle plate demister 303 disposed at the top of the inner cylinder 3, and an exhaust pipe 304 connected to the top of the inner cylinder 3 and extending through and to the outside of the tank body 1. An induced draft fan may be installed on the outer wall of the exhaust pipe 304.

[0030] The inner wall of the tank body 1 is provided with a downward swirling spiral guide plate 2, which swirls from the top to the bottom of the inner cylinder 3.

[0031] High-temperature exhaust gas is introduced into the tank body 1 through the inclined air inlet pipe 101, while cold water is introduced into the cooling jacket 4 to condense the exhaust gas. The exhaust gas forms a swirling flow through the downward spiral guide plate 2, and large droplets in the exhaust gas are thrown towards the tank wall under the action of centrifugal force. The droplets flow down the wall of the tank body 1 to the bottom of the tank, which can initially separate the large droplets and prevent large particles from directly impacting the packing layer 302, thus preventing blockage or structural damage.

[0032] The rising airflow enters the inner cylinder 3 through the air inlet 301, passes through the packing layer 302, and further captures small droplets through collision and coalescence, causing the small droplets to be intercepted and coalesced and fall. The dry gas is further purified by the top baffle demister 303 and then discharged through the exhaust pipe 304. In addition, the gas undergoes three-stage separation through the spiral guide plate 2, the packing layer 302 and the baffle demister 303, which can intercept droplets of all sizes and improve the droplet separation efficiency.

[0033] In addition, large particles are removed before entering the packing layer 302, reducing the risk of blockage. The spiral guide plate 2 does not require additional power and can achieve separation by relying solely on air kinetic energy, thus reducing operating costs.

[0034] As a technical optimization of this utility model, the filter assembly includes a threaded cylinder 103 that is threaded to the outer wall of the drain pipe 102, and a filter screen 104 that is detachably connected to the inside of the threaded cylinder 103 by bolts.

[0035] In this way, solid particles can be intercepted by the filter screen 104, which can prevent solid particles from being discharged with the liquid; by rotating the threaded cylinder 103, the threaded cylinder 103 is separated from the drain pipe 102, and the filter screen 104 can be cleaned and maintained.

[0036] As a technical optimization of this utility model, the filler layer 302 is a ceramic corrugated filler.

[0037] In this embodiment, the filler layer 302 is a ceramic corrugated filler, which can increase the area of ​​droplet collision.

[0038] As a technical optimization of this utility model, the drain pipe 102 can be configured as a conical structure.

[0039] By setting the drain pipe 102 to a conical structure, the droplets can be accelerated to converge and be discharged under the action of gravity.

[0040] As a technical optimization of this utility model, the top of the inner wall of the tank body 1 is fixedly connected to an installation cylinder 305 that is threadedly connected to the inner cylinder 3. Of course, the tank body 1 and the inner cylinder 3 can also be detachably connected in other ways.

[0041] The mounting sleeve 305 facilitates the threaded connection of the inner cylinder 3 to the inside of the tank body 1, and also facilitates the disassembly of the inner cylinder 3.

[0042] As a technical optimization of this utility model, heat dissipation fins can also be provided on the outer wall of the tank body 1.

[0043] The heat dissipation effect of the tank body 1 can be improved by heat dissipation fins.

[0044] Working principle and usage process of this utility model:

[0045] High-temperature exhaust gas enters the tank body 1 through the inclined air inlet pipe 101, while cold water is simultaneously introduced into the cooling jacket 4 through the water inlet pipe to condense the exhaust gas. The exhaust gas forms a swirling flow through the downward spiral guide plate 2, and large droplets in the exhaust gas are thrown towards the tank wall under the action of centrifugal force. The droplets flow down the wall of the tank body 1 to the bottom of the tank and are discharged through the drain pipe 102. This process can initially separate large droplets and prevent large particles from directly impacting the packing layer 302, thus preventing blockage or structural damage.

[0046] The rising airflow enters the inner cylinder 3 through the air inlet 301, passes through the packing layer 302, and further captures small droplets through collision and coalescence. The small droplets are intercepted, coalesced, and fall down, and are discharged through the drain pipe 102. The dry gas is further purified by the top baffle demister 303 and then discharged through the exhaust pipe 304. The gas then undergoes three-stage separation through the spiral guide plate 2, the packing layer 302, and the baffle demister 303, which can intercept droplets of all sizes and improve the droplet separation efficiency. The heated cold water is discharged through the water outlet pipe for recycling.

[0047] Rotate the drain pipe 102 by spiraling it to disassemble it from the tank body 1. Then, spirally disassemble the inner cylinder 3 and the mounting cylinder 305. Open the sealing cover plate on the outer wall of the inner cylinder 3 to maintain the packing layer 302 and the baffle plate demister 303 inside the inner cylinder 3.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The exhaust gas condenser and exhaust gas condensation equipment provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A tail gas condenser, characterized in that, The tank body (1) includes a cooling jacket (4) on its outer wall, the cooling jacket (4) being connected to a water inlet pipe and a water outlet pipe, the top of the tank body (1) being connected to an inclined air inlet pipe (101), the interior of the tank body (1) being provided with a spiral guide plate (2) that swirls from top to bottom, and an inner cylinder (3) surrounded by the spiral guide plate (2); the bottom of the inner cylinder (3) is provided with an air inlet (301), the interior is provided with a packing layer (302), the top of the interior is provided with a baffle plate demister (303), and the top of the inner cylinder is connected to an exhaust pipe (304) that penetrates through and extends to the outside of the tank body (1), and an induced draft fan is installed on the outer wall of the exhaust pipe (304); the bottom end of the tank body (1) is connected to a drain pipe (102).

2. The exhaust gas condenser as described in claim 1, characterized in that, The drain pipe (102) is equipped with a detachable filter assembly.

3. The exhaust gas condenser as described in claim 2, characterized in that, The filter assembly includes a threaded cylinder (103) threaded to the outer wall of the drain pipe (102) and a filter screen (104) detachably connected to the inside of the threaded cylinder (103) by bolts.

4. The exhaust gas condenser as described in claim 3, characterized in that, The drain pipe (102) has a conical structure.

5. The tail gas condenser as described in any one of claims 1-4, characterized in that, The angle between the air intake direction of the air intake pipe (101) and the axis of the inner cylinder (3) is between 55 degrees and 85 degrees.

6. The exhaust gas condenser as described in claim 5, characterized in that, The packing layer (302) is a ceramic corrugated packing.

7. The exhaust gas condenser as described in claim 5, characterized in that, The tank body (1) and the inner cylinder (3) are detachably connected.

8. The exhaust gas condenser as described in claim 7, characterized in that, The top of the inner wall of the tank body (1) is fixedly connected to the mounting cylinder (305) which is threadedly connected to the inner cylinder (3).

9. The exhaust gas condenser as described in claim 5, characterized in that, The outer wall of the tank body (1) is provided with heat dissipation fins.

10. A tail gas condensation device, characterized in that, Includes the exhaust gas condenser as described in any one of claims 1-9.

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