Efficient baffling acid mist catching device

Abstract

The efficient baffling acid mist catching device comprises a mist catcher box body (1), a process pipeline outlet (2) and a process pipeline inlet (3), a top cover (15) is fixedly arranged at the top of the mist catcher box body (1); a connecting pipe (4) and a baffle plate box body (5) are arranged at the top of the top cover (15); an upper flange (8) is arranged at the top end of the connecting pipe (4); a flushing port connecting flange (9) is arranged at the upper end of the upper flange (8); a flushing pipe (10) is arranged in the center of the flushing port connecting flange (9); the flushing pipe (10) is provided with a plurality of spray heads (12); a box body flange (16) is arranged on the edge of the upper end of the baffle plate box body (5); a flange cover plate (6) is arranged at the top of the box body flange (16); a baffling mist catching plate (11) is arranged on the lower surface of the flange cover plate (6); and after being blocked by the baffle plate, small-particle-size fog drops are discharged into the emptying groove, so that equipment is protected from being corroded. Meanwhile, the flushing pipe (10) and the baffling mist catching plate (11) are both detachable equipment, so that the flushing pipe (10) and the baffling mist catching plate (11) are more convenient to replace and clean.

Description

Technical Field

[0001] The utility model relates to the field of demisting and gas-liquid separation in the chemical industry, and in particular to a high-efficiency baffled acid mist catching device. Background Art

[0002] Coke oven gas uses a spray-type ammonium sulfate saturator to absorb and remove ammonia from the gas through the circulating spray of sulfuric acid mother liquor. The coke oven gas enters the annular chamber in the front chamber of the upper section of the saturator and contacts the heated circulating mother liquor in countercurrent. The ammonia in the mother liquor is absorbed by the sulfuric acid in the mother liquor to generate ammonium sulfate. The deammonified gas merges into a small stream in the rear chamber of the saturator. After continuous spraying and washing by the mother liquor circulation pump, it enters the first-level cyclone deacidifier in the saturator along the tangential direction to separate the large particles of acid mist entrained in the gas. After leaving the saturator, it is merged into the main gas pipeline. At this time, the coke oven gas still carries a large amount of small-particle acid mist. If these small-particle acid mists are not handled in time, they will cause secondary liquid in the equipment and have a strong corrosive effect on the pipeline after entering the main gas pipeline. Long-term operation of the equipment will cause corrosion to the pipeline, which will cause leaks and damage to the pipeline, leaking gas and posing a safety hazard. Summary of the invention

[0003] In order to solve the problem of a large amount of small-sized acid mist carried by coke oven gas, if the small-sized acid mist is not handled in time, it will cause secondary liquid in the equipment, and after entering the main gas pipeline, it will have a strong corrosive effect on the pipeline. Long-term operation of the equipment will cause corrosion to the pipeline, which will cause leaks and damage to the pipeline, leaking gas and posing safety hazards.

[0004] The utility model provides a technical solution, specifically: a high-efficiency baffled acid mist catching device, comprising a mist catching box, a process pipeline inlet and a process pipeline outlet; characterized in that: a top cover is fixedly arranged on the top of the mist catching box; a connecting pipe is arranged on the top of the top cover near the process pipeline outlet; a baffle box is arranged on the top of the top cover near the process pipeline inlet; an upper flange is arranged on the top of the connecting pipe; a flushing port connecting flange is arranged on the upper end of the upper flange; a flushing pipe is arranged at the center of the flushing port connecting flange; the flushing pipe passes through the flushing port connecting flange, the head of the flushing pipe extends out of the flushing port connecting flange, and the tail is arranged on the inner bottom surface of the mist catching box; a plurality of spray heads are arranged on the flushing pipe; a box flange is arranged on the upper end edge of the baffle box; a flange cover is arranged on the top of the box flange; a baffle mist catching plate is arranged on the lower surface of the flange cover; the head of the baffle mist catching plate is welded to the bottom surface of the flange cover, and the tail is arranged on the inner bottom surface of the mist catching box.

[0005] The top surface of the flange cover plate is provided with a lifting lug.

[0006] Support members are arranged on both sides of the lower end of the flushing pipe, and the support members are fixedly connected to the inner bottom surface of the mist collector box.

[0007] A lower liquid pipe communicating with the inside of the fog catcher box body is provided at the bottom outside the fog catcher box body.

[0008] The box body flange is bolted to the flange cover plate.

[0009] To sum up, the beneficial effects of the present utility model are as follows: During the operation of the saturator, the sprayed sulfuric acid mother liquor is likely to generate mist-like droplets with a particle size of 10 - 60 microns, which are carried forward by the coal gas flow. The primary cyclone acid removal structure inside the saturator can remove most of the acid mist. The coal gas flow carrying small particle size acid mist droplets passes through the fog catcher. When passing through the baffle plate, the coal gas flow is forced to pass between the baffle plates, and the fine acid droplets cannot follow the flow of the gas. They hit the surface of the baffle plate, coagulate and then drip back to the bottom area of the baffle plate, thus separating from the coal gas flow. It effectively solves the problem that small particle size acid mist corrodes the pipeline, which in turn causes leakage points, damage to the pipeline, leakage of coal gas, and potential safety hazards. Brief Description of the Drawings

[0010] Figure 1 It is a schematic diagram of the overall structure of the present utility model

[0011] Figure 2 It is a top view of the present utility model

[0012] Figure 3 It is a schematic diagram of the spray head, baffle plate and fog catching plate of the present utility model Detailed Embodiment

[0013] The following clearly and completely describes the technical solution of the present utility model in conjunction with the attached drawings: As Figures 1-3As shown in the figure, the utility model provides a technical solution: an efficient baffle acid mist catcher, which includes a mist catcher box body 1, a process pipeline outlet 2, and a process pipeline inlet 3; a top cover 15 is fixedly arranged on the top of the mist catcher box body 1; a connecting pipe 4 is arranged on one side of the top cover 15 close to the process pipeline outlet 2; a baffle box body 5 is arranged on one side of the top cover 15 close to the process pipeline inlet 3; an upper flange 8 is arranged at the top end of the connecting pipe 4; a flushing port connecting flange 9 is arranged at the upper end of the upper flange 8; a flushing pipe 10 is arranged at the center position of the flushing port connecting flange 9. In this embodiment, there are two flushing pipes, and both flushing pipes are detachable and can be respectively connected to a hot water pipeline and a steam pipeline. According to the operation condition of the equipment, it can be switched for use; the flushing pipe 10 penetrates through the flushing port connecting flange 9, the head extends out of the flushing port connecting flange 9, and the tail is arranged on the inner bottom surface of the mist catcher box body 1; several spray heads 12 are arranged on the flushing pipe 10. In this embodiment, there are four spray heads, and the number of spray heads can be appropriately increased or decreased according to the process conditions. Hot water or steam can be evenly sprayed on the mist catching plate through the flushing pipe 10 via the spray heads 12 to deeply clean the mist catching plate; a box body flange 16 is arranged at the upper edge of the upper end of the baffle box body 5; a flange cover plate 6 is arranged at the top of the box body flange 16; a baffle mist catching plate 11 is arranged on the lower surface of the flange cover plate 6; the head of the baffle mist catching plate 11 is welded to the bottom surface of the flange cover plate 6, and the tail is arranged on the inner bottom surface of the mist catcher box 1 body; two lifting lugs 7 are symmetrically arranged on the top surface of the flange cover plate 6, and the lifting lugs 7 are welded to the flange cover plate 6, enhancing the stability of the connection between the lifting lugs 7 and the flange cover plate 6. When the baffle mist catching plate 11 needs to be cleaned or overhauled, a lifting device can be used to remove the mist catching plate as a whole for treatment, which also increases the safety during the lifting process.

[0014] As Figures 1-2 shown, in this embodiment, both the flushing pipe 10 and the baffle mist catching plate 11 are detachable. When the pressure difference resistance between the inlet and outlet of the mist catcher is greater than 2 Kpa, the flushing pipe orifice can be used to flush the baffle mist catching plate 11 with hot water or steam to eliminate blockage. After long-term use, if the resistance increases and cannot be eliminated by flushing, this mist catcher can be cut out. After being purged and replaced with steam and qualified, the flushing pipe 10 and the baffle mist catching plate 11 are removed for cleaning and overhaul. The overhaul of a single mist catcher does not affect the normal use of other mist catchers.

[0015] Supporting members 14 are arranged on both sides of the lower end of the flushing pipe 10, and the supporting members 14 are fixedly connected to the inner bottom surface of the mist catcher box body 1. The arrangement of the supporting members can effectively control the vibration generated when the flushing pipe 10 is connected to high-pressure water or high-pressure steam, thereby preventing the flushing pipe 10 from being displaced and causing unnecessary wear and damage, and ensuring the long-term stable operation of the pipeline system.

[0016] A lower liquid pipe 13 communicating with the inside of the fog catcher box body 1 is provided at the outer bottom of the fog catcher box body 1. The lower liquid pipe 13 is connected to a blowdown tank, and can regularly discharge the acid liquid formed by the small-diameter fog droplets intercepted by the baffle fog catcher plate 11, and can also discharge the impurities generated during cleaning.

[0017] The box body flange 16 is bolted to the flange cover plate 6, and a sealing rubber is clamped between the box body and the cover plate, which can increase the sealing performance between the box body and the cover plate.

Claims

1. An efficient baffle acid mist capture device, comprising a mist capture box body (1), a process pipeline outlet (2), and a process pipeline inlet (3); characterized in that: A top cover (15) is fixedly arranged at the top of the demister box body (1); a connecting pipe (4) is arranged on one side of the top of the top cover (15) close to the outlet (2) of the process pipeline; a baffle box body (5) is arranged on one side of the top of the top cover (15) close to the inlet (3) of the process pipeline; an upper flange (8) is arranged at the top end of the connecting pipe (4); a flushing port connecting flange (9) is arranged at the upper end of the upper flange (8); a flushing pipe (10) is arranged at the central position of the flushing port connecting flange (9); the flushing pipe (10) penetrates through the flushing port connecting flange (9), the head extends out of the outside of the flushing port connecting flange (9), and the tail is arranged on the inner bottom surface of the demister box body (1); a plurality of spray heads (12) are arranged on the flushing pipe (10); a box body flange (16) is arranged at the upper edge of the upper end of the baffle box body (5); a flange cover plate (6) is arranged at the top of the box body flange (16); a baffle demisting plate (11) is arranged on the lower surface of the flange cover plate (6); the head of the baffle demisting plate (11) is welded to the bottom surface of the flange cover plate (6), and the tail is arranged on the inner bottom surface of the demister box body (1).

2. The high-efficiency baffle acid mist capture device according to claim 1, wherein: A lifting lug (7) is arranged on the top surface of the flange cover plate (6).

3. An efficient baffle acid mist capture device according to claim 1, characterized in that: Supporting members (14) are arranged on both sides of the lower end of the flushing pipe (10), and the supporting members (14) are fixedly connected to the inner bottom surface of the demister box body (1).

4. An efficient baffle acid mist capturing device according to claim 3, characterized in that: A lower liquid pipe (13) communicating with the inside of the demister box body (1) is arranged at the outer bottom of the demister box body (1).

5. The high-efficiency baffle acid mist capturing device according to claim 1, characterized in that: The box body flange (16) is bolted to the flange cover plate (6).

Images