Cyclone water-seal fire-retardant device

Abstract

The invention discloses a rotational flow water-seal fire-retardant device, and relates to the field of flue gas treatment, the rotational flow water-seal fire-retardant device comprises a device body, a gas equalizing chamber is fixedly mounted at the lower part of the interior of the device body, and at least one rotational flow blade module is fixedly mounted at the position, above the gas equalizing chamber, of the interior of the device body; the flue gas inlet is formed in the lower part of the device body; the flue gas outlet is formed in the top of the device body; and the outer side wall of the device body is located above the at least one rotational flow blade module and connected with the circulating pipe, and a cooling medium circulates in the device body from top to bottom through the circulating pipe. The device disclosed by the invention can be used for cooling and washing chlorinated flue gas, and the purpose of effectively retarding fire can be achieved through the formed rotational flow water seal.

Description

Technical Field

[0001] The invention relates to the field of chlorinated flue gas treatment, and in particular to a swirl water seal fire arresting device. Background Art

[0002] The chlorinated flue gas generated during the existing titanium tetrachloride production process still contains a small amount of carbon monoxide even after treatment. Because the flue gas contains large amounts of nitrogen and carbon dioxide and a low carbon monoxide concentration, the chlorinated flue gas containing carbon monoxide suffers from low calorific value, difficulty igniting, and poor combustion performance during the flue gas recovery process. In line with the country's advocacy of green, low-carbon, and sustainable development, and in conjunction with the company's high-quality development plans, the comprehensive resource utilization of boiling chlorinated flue gas is increasingly urgent. This comprehensive utilization of boiling chlorinated flue gas can not only improve the cleanliness and greenness of the company's chlorination production process (reducing atmospheric pollution), but also reduce production costs and support its high-quality development.

[0003] To effectively utilize the calorific value of carbon monoxide in chlorinated flue gas, it must be cooled and scrubbed before combustion. To ensure the safety of the production system, fire-retardant measures are required during this cooling and scrubbing process. Existing fire-retardant devices offer room for improvement in both cooling and scrubbing performance.

[0004] In the current state of chlorinated flue gas treatment, chlorinated flue gas, such as low calorific value carbon monoxide flue gas in titanium tetrachloride production, needs to be cooled and washed before combustion and utilization. However, traditional spray washing has the following problems: The fire-retardant capacity is insufficient, and the flue gas contains some oxygen, which poses a risk of explosion and backfire during combustion. The existing technology has limited fire-retardant effect and poses a safety hazard. In addition, the gas distribution is uneven, and the uneven distribution of flue gas leads to low washing efficiency and poor cooling effect. In addition, the equipment is complex, and the multi-stage spray system requires large investment, high energy consumption, and high maintenance costs.

[0005] At present, there is still a need to develop a fire-blocking device that can more effectively improve the cooling and washing effects and the fire-blocking effects. Summary of the Invention

[0006] The object of the present invention is to provide a fire arresting device which can effectively arrest fire when cooling and washing chlorinated flue gas, thereby ensuring the safety of the chlorinated flue gas treatment process.

[0007] Therefore, the present invention provides an improved swirl water seal fire arrester device capable of achieving uniform gas distribution, comprising: A device body, wherein an air equalization chamber is fixedly installed at the lower part of the device body, and at least one swirl blade module is fixedly installed above the air equalization chamber in the device body; a flue gas inlet, arranged at the lower part of the device body; a smoke outlet, arranged at the top of the device body; A circulation pipe is provided, wherein the outer side wall of the device body is located above the at least one swirl blade module and is connected to the circulation pipe, and the cooling medium circulates from top to bottom in the device body through the circulation pipe.

[0008] Furthermore, a buffer screen is fixedly installed above the swirl blade module inside the device body, and the buffer screen is tilted toward the inlet of the circulation pipe.

[0009] Furthermore, a wire mesh demister is fixedly installed on the upper part of the device body.

[0010] Furthermore, the number of the swirl blade modules is at least two, the circulation pipe includes transverse circulation pipe branches, the number of the circulation pipe branches is equal to the number of the swirl blade modules, and each of the circulation pipe branches is connected to the device body above the corresponding swirl blade module.

[0011] Furthermore, a plurality of conical guide plates are fixedly connected to the interior of the air equalizing chamber from top to bottom, and the number of the plurality of conical guide plates decreases from top to bottom.

[0012] Furthermore, a through groove is provided on the lower surface of the air equalizing chamber.

[0013] Furthermore, the inner lower surface of the air equalizing chamber is provided with a flow guide slope (preferably integrally formed).

[0014] Furthermore, the swirl blade module includes a sleeve and a plurality of static swirl blades, and the static swirl blades are arranged at an angle.

[0015] Furthermore, one end of the smoke outlet away from the device body is fixedly connected to a fan.

[0016] Furthermore, the bottom end of the circulation pipe is fixedly connected to a circulation pump, and the circulation pump draws the cooling medium from an external liquid storage tank.

[0017] Beneficial effects: The device of the present invention improves the uniformity of gas distribution and the swirl flow form, which can not only effectively cool and wash the chlorinated flue gas, but also achieve the purpose of safe and effective fire prevention through the swirl water seal formed.

[0018] The swirl blade module used in the device of the present invention can make the flue gas flow form a swirl flow, and make the water entering the device body through the circulation pump and the circulation pipe also form a swirl flow, thereby achieving a swirl water seal effect and realizing the purpose of fire prevention.

[0019] When the device of the present invention is in use, a strong plane centripetal rotation occurs when the flue gas flows through the static rotary blades of the swirl blade module. The rotating flue gas impacts the descending liquid into a rotating foam area, and then lifts up the foam area, so that the entire rotating foam area is in a suspended state. The flue gas passes through the foam area from bottom to top and fully acts on the rotating downward liquid, thereby achieving the purpose of cooling and washing the chlorinated flue gas. At the same time, the purpose of effective fire prevention is achieved by relying on the swirl water seal formed by the swirl blade module.

[0020] It should be understood that the directional terms such as "upper," "lower," "front," and "back," as well as the morphological terms such as "rod," "box," and "piece," used herein, are merely for the purpose of explaining the present invention in conjunction with the accompanying drawings and do not constitute, and cannot be used to limit, the present invention. All directional indications in the embodiments of this application are intended only to explain the relative positional relationships and movement of components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. In this application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood broadly. For example, "fixed" can refer to a fixed connection, a detachable connection, or integration; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. Furthermore, references to "first," "second," and so on, in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of these features. Furthermore, the technical features of various embodiments may be combined, but this must be based on the fact that they can be implemented by a person of ordinary skill in the art. If the combination of technical features contradicts or cannot be implemented, such combination shall be deemed non-existent and not within the scope of protection claimed in this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the device body of the present invention; Figure 3 is a schematic structural diagram of the swirl blade module of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the gas equalizing chamber of the present invention.

[0022] In the figure: 1. Device body; 2. Air equalization chamber; 3. Swirl blade module; 4. Buffer screen; 5. Wire mesh demister; 6. Flue gas inlet; 7. Flue gas outlet; 8. Circulation pipe; 9. Conical guide plate; 10. Through groove; 11. Guide slope; 12. Sleeve; 13. Static rotary blade; 14. Fan; 15. Circulation pump. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 and Figure 2 As shown, a swirl water seal fire-proof device is provided, which includes a device body 1, an air equalization chamber 2 is fixedly installed at the lower part of the device body 1, and two swirl blade modules 3 are fixedly installed inside the device body 1 above the air equalization chamber 2; a flue gas inlet 6 is integrally formed at the lower left part of the device body 1; a flue gas outlet 7 is integrally formed at the top of the device body 1; the outer wall of the device body 1 is located above the two swirl blade modules 3 and is connected to the circulation pipe 8, and the cooling medium circulates from top to bottom in the device body 1 through the circulation pipe 8; a buffer mesh plate 4 is fixedly installed above the two swirl blade modules 3 inside the device body 1, and the buffer mesh plate 4 is inclined toward the inlet of the circulation pipe 8; a wire mesh demister 5 is fixedly installed above the swirl blade module 3 inside the device body 1; the circulation pipe 8 is integrally fixed to the outer wall of the device body 1 between the buffer mesh plate 4 and the wire mesh demister 5. The circulation pipe 8 includes transverse circulation pipe branches, the number of which is equal to the number of the swirl blade modules 3 (two each), and each circulation pipe branch is connected to the device body 1 above the corresponding swirl blade module 3 .

[0025] During use, the flue gas enters the interior of the device body 1 through the flue gas inlet 6, is evenly distributed to the middle part of the device body 1 through the air equalization chamber 2, and then passes through the swirl blade module 3, the buffer screen 4 and the wire mesh demister 5 before being discharged from the flue gas outlet 7. The circulation pipe 8 draws cooling water into the interior of the device body 1 for circulation.

[0026] Unlike traditional multi-stage spray washing, the swirl blade module 3 of the device of the present invention utilizes the reaction mechanism of pneumatic suspension cavitation technology, so that the dynamic liquid film wraps tiny smoke clusters for washing and cooling, with higher cooling efficiency. The smoke can all pass through the pneumatic suspension cavitation zone formed by the swirl blade module 3, with almost no dead zone, thereby efficiently cooling and washing the chlorinated smoke.

[0027] The wire mesh demister 5 is composed of multiple layers of metal wire mesh or polymer material wire mesh, and the mist droplets are captured when passing through the wire mesh.

[0028] The buffer mesh plate 4 has a buffering effect on the introduced liquid, preventing the liquid from impacting the inner wall of the device body 1.

[0029] like Figure 4 As shown, the interior of the air equalizing chamber 2 is fixedly connected to a plurality of conical guide plates 9 from top to bottom, with the number of conical guide plates 9 decreasing from top to bottom. A through-type through slot 10 is formed on the lower surface of the air equalizing chamber 2. A guide slope 11 is integrally formed on the lower surface of the interior of the air equalizing chamber 2.

[0030] The flue gas inlet 6 is arranged close to the lower surface of the equalizing chamber 2. After the incoming flue gas enters the equalizing chamber 2 through the through groove 10, it is guided by the multi-layer conical guide plate 9 and can evenly enter the interior of the device body 1. The guide slope 11 is set to facilitate the discharge of the circulating liquid from the interior of the equalizing chamber 2.

[0031] like Figure 3 As shown, the swirl blade module 3 includes a sleeve 12 and a plurality of static rotor blades 13 , and the static rotor blades 13 are arranged at an angle.

[0032] By means of the inclined static rotor blades 13, a strong planar centripetal rotation will occur when the flue gas flows through the static rotor blades 13 of the swirl blade module 3. The rotating flue gas impacts the liquid into a rotating foam area, and then lifts up the foam area, so that the entire rotating foam area is in a suspended state. The flue gas passes through the foam area from bottom to top and fully acts on the rotating downward liquid, thereby achieving the purpose of cooling and washing the chlorinated flue gas. At the same time, the swirl water seal formed by the swirl blade module 3 is used to achieve the purpose of effective fire prevention.

[0033] like Figure 1 As shown, the end of the smoke outlet 7 away from the device body 1 is fixedly connected to a fan 14 for extracting the smoke out; the bottom end of the circulation pipe 8 is fixedly connected to a circulation pump 15 for extracting cooling water from a liquid storage tank 16. The liquid storage tank 16 can cool the water falling from the device body 1 by natural cooling or by a heat exchange pipe filled with chilled brine.

[0034] In the present invention, the swirl blade module 3 utilizes the aerodynamic suspension cavitation technology reaction mechanism, which is composed of multiple sets of modular static rotor blades 13, which are arranged in a circular tubular container in the device body 1 (such as Figure 2As shown in the figure, the accelerated flue gas enters the container at a certain angle from the lower end and collides with the unstable coolant flowing down from the upper end. The flue gas swirls at high speed into the coolant, shredding it. The continuous collision and slicing between the gas and liquid pulverizes the liquid particles into increasingly fine particles, allowing them to fully mix and form a layer of stable reaction liquid. As the flue gas continues to flow, the reaction liquid layer gradually thickens. When the upstream pneumatic lift balances the gravity of the emulsion, the earliest reaction liquid is replaced by the newly formed reaction liquid, ultimately forming a continuous, stable, and efficient flue gas scrubbing model.

[0035] Within the modular reaction space of the pneumatic suspension cavitation mechanism, as long as sufficient processing airflow is achieved, a relatively stable reaction liquid layer will always be maintained. Flue gas flows upward through the foam zone and the swirling cooling water, where it is thoroughly mixed and cooled. Unlike traditional multi-stage spraying, the pneumatic suspension cavitation technology utilizes a dynamic liquid film enveloping tiny flue gas clusters, resulting in a more efficient cooling process. As the flue gas passes entirely through the pneumatic suspension cavitation device, the gas and liquid within the reaction liquid layer undergo high-speed rotary collisions, creating virtually no dead zones.

[0036] Since the mechanism of pneumatic suspension cavitation is strong mass transfer cooling, when treating the same flue gas volume and temperature, its liquid-to-gas ratio is 1 / 2 of the existing empty tower spray.

[0037] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A swirl water seal fire arrester device, comprising: A device body (1), wherein an air equalization chamber (2) is fixedly installed at the lower portion of the device body (1), and at least one swirl blade module (3) is fixedly installed above the air equalization chamber (2) in the device body (1); A flue gas inlet (6) is provided at the lower portion of the device body (1); A smoke outlet (7) is provided at the top of the device body (1); A circulation pipe (8) is connected to the outer wall of the device body (1) above the at least one swirl blade module (3), and the cooling medium circulates from top to bottom in the device body (1) through the circulation pipe (8).

2. The swirl water seal fire arrester according to claim 1, characterized in that: A buffer screen (4) is fixedly installed inside the device body (1) above the swirl blade module (3), and the buffer screen (4) is tilted toward the inlet of the circulation pipe (8).

3. The swirl water seal fire arrester according to claim 1, characterized in that: A wire mesh demister (5) is fixedly mounted on the upper portion of the device body (1).

4. The swirl water seal fire arrester according to claim 1, characterized in that: The number of the swirl blade modules (3) is at least two, the circulation pipe (8) includes transverse circulation pipe branches, the number of the circulation pipe branches is equal to the number of the swirl blade modules (3), and each of the circulation pipe branches is connected to the device body (1) above the corresponding swirl blade module (3).

5. The swirl water seal fire arrester according to claim 1, characterized in that: A plurality of conical guide plates (9) are fixedly connected to the interior of the air equalization chamber (2) in sequence from top to bottom, and the number of the plurality of conical guide plates (9) decreases in sequence from top to bottom.

6. The swirl water seal fire arrester according to claim 1, characterized in that: A through-type groove (10) is provided on the lower surface of the gas equalizing chamber (2).

7. The swirl water seal fire arrester according to claim 1, characterized in that: The inner lower surface of the air equalizing chamber (2) is provided with a flow guide slope (11).

8. The swirl water seal fire arrester according to claim 1, characterized in that: The swirl blade module (3) comprises a sleeve (12) and a plurality of static swirl blades (13), wherein the static swirl blades (13) are arranged at an angle.

9. The swirl water seal fire arrester according to claim 1, characterized in that: One end of the smoke outlet (7) away from the device body (1) is fixedly connected to a fan (14).

10. The swirl water seal fire arrester according to claim 1, characterized in that: The bottom end of the circulation pipe (8) is fixedly connected to a circulation pump (15), which draws the cooling medium from an external liquid storage tank (16).

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