High-temperature sulfur dioxide flue gas demisting device

Abstract

The utility model discloses a high-temperature sulfur dioxide flue gas demisting device which comprises a cylinder body, an end socket, a gas inlet hole, a gas outlet hole and a bottom plate, and the top end of the cylinder body is connected with the end socket; the bottom end of the barrel is connected with the bottom plate; a middle partition plate is horizontally mounted in the cylinder body and is connected with the bottom plate through a plurality of upright posts; a plurality of flange rings are vertically arranged on the middle partition plate, the top end of each flange ring is connected with a filter box, and a cavity of each filter box is filled with filter fibers; a plurality of flue gas through holes are vertically formed below the inner hole of each flange ring on the middle partition plate; a plurality of vent holes are formed in each side surface of each filter box; a first liquid discharge hole is formed in the side wall of the cylinder body close to the top surface of the middle partition plate; a second liquid discharge hole is formed in the bottom end of the side wall of the barrel; an air outlet hole is formed in the sealing head; an air inlet hole is formed in the side wall of the barrel and below the middle partition plate. The high-temperature sulfur dioxide flue gas demisting device disclosed by the utility model has the advantage of fully filtering impurities in high-temperature flue gas.

Description

Technical Field

[0001] The utility model relates to the technical field of demisters, in particular to a high-temperature sulfur dioxide flue gas demister. Background Art

[0002] In the process of producing sulfite, sulfur-containing substances are often burned to produce high-temperature sulfur dioxide flue gas, which often contains ultrafine particles and "acid mist" with a particle size of 10-60 microns. "Acid mist" contains not only water but also acid, which needs to be removed. At present, the demister is mainly composed of a box, a blade demister layer, and a spray pipe. The blade demister layer is not in sufficient contact with the airflow, and the demister effect is poor. Summary of the invention

[0003] The purpose of the utility model is to provide a high-temperature sulfur dioxide flue gas demisting device to address the deficiencies of the prior art, which has the advantage of fully filtering impurities in the high-temperature flue gas.

[0004] The technical solution adopted by the utility model is as follows.

[0005] A high-temperature sulfur dioxide flue gas demisting device comprises a cylinder, a sealing head, an air inlet, an air outlet, and a bottom plate, wherein the top end of the cylinder is connected to the sealing head; the bottom end of the cylinder is connected to the bottom plate; a middle partition is horizontally installed in the cylinder, and the middle partition is connected to the bottom plate through a plurality of columns; a plurality of flange rings are vertically arranged on the middle partition, and a filter box is connected to the top end of each flange ring, and the cavity of each filter box is filled with filter fibers; the central axis of each filter box is perpendicular to the bottom surface;

[0006] A plurality of first manholes are arranged above the middle partition on the side wall of the cylinder, and a first manhole cover is arranged on each first manhole; a plurality of second manholes are arranged below the middle partition on the side wall of the cylinder, and a second manhole cover is arranged on each second manhole; a plurality of smoke through holes are arranged vertically below the inner hole of each flange ring on the middle partition; a plurality of ventilation holes are arranged on each side of each filter box;

[0007] A first liquid drainage hole is provided on the side wall of the cylinder near the top surface of the middle partition plate; a second liquid drainage hole is provided at the bottom end of the side wall of the cylinder;

[0008] An air outlet is arranged on the sealing head; an air inlet is arranged below the middle partition on the side wall of the cylinder.

[0009] The beneficial effects of the utility model are as follows: the high-temperature flue gas enters the cylinder through the air inlet, and then enters each filter box through the flue gas through hole, fully contacts with the filter fiber of the filter box, and the filter fiber absorbs the particles and acid mist of the high-temperature flue gas, and then the filtered gas is introduced into the next production process through the air outlet. There are multiple filter boxes, and the gas is fully in contact with the filter box. A first drain hole is provided to discharge the acid liquid filtered by the high-temperature flue gas in the filter box, and the acid liquid outside the filter box of the high-temperature flue gas in the cylinder is discharged through the second drain hole. There are several first manholes and second manholes, which are convenient for maintenance and replacement of filter fibers.

[0010] As a preferred technical solution, the filter box includes a bottom panel and a filter cover installed on the bottom panel; a plurality of ventilation holes are provided on the bottom panel and the filter cover.

[0011] As a preferred technical solution, the horizontal cross section on the bottom panel is circular.

[0012] As a preferred technical solution, the horizontal cross-section of the cavity of each filter box is circular.

[0013] As a preferred technical solution, the horizontal cross-sectional diameter of the bottom panel is larger than the horizontal cross-sectional diameter of the cavity of each filter box.

[0014] As a preferred technical solution, the filter cover is connected to the flange ring by a plurality of connecting screws, and the bottom panel is clamped between the filter cover and the flange ring.

[0015] By adopting this technical solution, it is convenient to replace the filter cover.

[0016] As a preferred technical solution, the flange rings are arranged in an array along the central axis of the cylinder.

[0017] As a preferred technical solution, the horizontal cross-section of the end cap is in the shape of a circular ring; and the air outlet is arranged at the center of the top end of the end cap.

[0018] As a preferred technical solution, a first observation window is provided above the middle partition on the side wall of the cylinder.

[0019] As a preferred technical solution, a second observation window is provided below the middle partition on the side wall of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a preferred embodiment of the high-temperature sulfur dioxide flue gas demisting device of the utility model.

[0021] Figure 2 yes Figure 1 A top view of the high-temperature sulfur dioxide flue gas demisting device is shown.

[0022] Figure 3 yes Figure 2 The cross-sectional view of the high-temperature sulfur dioxide flue gas demisting device along A-A' is shown.

[0023] Figure 4 yes Figure 3 A partial enlarged view of part C.

[0024] Figure 5 yes Figure 3 A partial enlarged view of part D.

[0025] Figure 6 yes Figure 3 The cross-sectional view of the high-temperature sulfur dioxide flue gas demisting device along BB' is shown.

[0026] Figure 7 It is a structural schematic diagram of a preferred embodiment of the high-temperature sulfur dioxide flue gas demisting device of the utility model.

[0027] Figure 8 yes Figure 7 The cross-sectional view of the high-temperature sulfur dioxide flue gas demisting device along E-E' is shown.

[0028] Fig. 9 It is a structural schematic diagram of a preferred embodiment of the high-temperature sulfur dioxide flue gas demisting device of the utility model.

[0029] Fig.10 It is a structural schematic diagram of a preferred embodiment of the high-temperature sulfur dioxide flue gas demisting device of the utility model.

[0030] Among them: cylinder-1; head-2; air inlet-3; air outlet-4; bottom plate-5;

[0031] Middle partition-6; Smoke hole-61;

[0032] Column-7; Flange ring-8;

[0033] Filter box-9; vent-91; bottom panel-92; filter cover-93;

[0034] Filter fiber-10; first manhole-11; first manhole cover-12; second manhole-13; second manhole cover-14; first drainage hole-15; second drainage hole-16;

[0035] Connecting screw-17; first observation window-18; second observation window-19. DETAILED DESCRIPTION

[0036] Below, the utility model is further described in conjunction with the drawings and embodiments.

[0037] Embodiment 1. A high-temperature sulfur dioxide flue gas demisting device comprises a cylinder 1, a sealing head 2, an air inlet 3, an air outlet 4, and a bottom plate 5, wherein the top end of the cylinder 1 is connected to the sealing head 2; the bottom end of the cylinder 1 is connected to the bottom plate 5; a middle partition 6 is horizontally installed in the cylinder 1, and the middle partition 6 is connected to the bottom plate 5 through a column 7; three flange rings 8 are vertically arranged on the middle partition 6, and the top end of each flange ring 8 is connected to a filter box 9, and the cavity of each filter box 9 is filled with filter fibers 10; the central axis of each filter box 9 is perpendicular to the bottom surface.

[0038] Two first manholes 11 are provided above the middle partition plate 6 on the side wall of the cylinder 1, and each first manhole 11 is provided with a first manhole cover 12; two second manholes 13 are provided below the middle partition plate 6 on the side wall of the cylinder 1, and each second manhole 13 is provided with a second manhole cover 14; a plurality of smoke through holes 61 are vertically provided below the inner hole of each flange ring 8 on the middle partition plate 6; and a plurality of ventilation holes 91 are provided on each side of each filter box 9.

[0039] A first drain hole 15 is provided on the side wall of the cylinder 1 near the top surface of the middle partition 6, and a second drain hole 16 is provided at the bottom end of the side wall of the cylinder 1. A first drain hole valve 151 is provided on the first drain hole 15, and a second drain hole valve 161 is provided on the second drain hole 16.

[0040] An air outlet 4 is provided on the sealing head 2; an air inlet 3 is provided below the middle partition 6 on the side wall of the cylinder 1.

[0041] The filter box 9 includes a bottom panel 92 and a filter cover 93 mounted on the bottom panel 92 ; a plurality of ventilation holes 91 are provided on the bottom panel 92 and the filter cover 93 .

[0042] The horizontal cross section of the bottom panel 92 is circular.

[0043] The horizontal cross section of the cavity of each filter box 9 is circular.

[0044] The horizontal cross-sectional diameter of the bottom panel 92 is larger than the horizontal cross-sectional diameter of the cavity of each filter box 9 .

[0045] The filter cover 93 is connected to the flange ring 8 by a plurality of connecting screws 17, and the bottom panel 92 is clamped between the filter cover 93 and the flange ring 8. With this technical solution, it is convenient to replace the filter cover 93.

[0046] The flange rings 8 are arranged in an array along the central axis of the cylinder 1 .

[0047] The horizontal cross section of the sealing head 2 is in the shape of a circular ring; the air outlet 4 is arranged at the center of the top end of the sealing head 2.

[0048] The high-temperature flue gas enters the cylinder 1 through the air inlet 3, and then enters each filter box 9 through the flue gas through hole 61, and fully contacts with the filter fiber 10 of the filter box 9. The filter fiber 10 absorbs the particles and acid mist of the high-temperature flue gas, and then the filtered gas is introduced into the next production process through the air outlet. There are multiple filter boxes 9, and the gas is fully in contact with the filter box 9. A first drainage hole 15 is provided to discharge the acid liquid filtered by the high-temperature flue gas in the filter box 9, and the acid liquid outside the filter box 9 of the high-temperature flue gas in the cylinder 1 is discharged through the second drainage hole 16. There are several first manholes 11 and second manholes 13, which are convenient for repairing and replacing the filter fiber 10.

[0049] Example 2. Figure 7-8 As shown, the difference between this embodiment and embodiment 1 is that a second observation window 19 is provided below the middle partition plate 6 on the side wall of the cylinder 1 .

[0050] Four flange rings 8 are vertically arranged on the middle partition plate 6, and the top of each flange ring 8 is connected to a filter box 9. The flange rings 8 are arranged in an array along the central axis of the cylinder 1.

[0051] Example 3. Fig. 9 As shown, the difference between this embodiment and embodiment 2 is that five flange rings are vertically arranged on the middle partition plate 6, and the top of each flange ring is connected to a filter box. A first observation window 18 is arranged above the middle partition plate 6 on the side wall of the cylinder 1.

[0052] Example 4. Fig.10 As shown, the difference between this embodiment and embodiment 1 is that the middle partition plate 6 is connected to the bottom plate 5 through two columns 7.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes to the technical solution and the inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-temperature sulfur dioxide flue gas demisting device, characterized in that: The invention comprises a cylinder (1), a sealing head (2), an air inlet (3), an air outlet (4), and a bottom plate (5), wherein the top end of the cylinder (1) is connected to the sealing head (2); the bottom end of the cylinder (1) is connected to the bottom plate (5); a middle partition (6) is horizontally installed in the cylinder (1), and the middle partition (6) is connected to the bottom plate (5) via a plurality of columns (7); a plurality of flange rings (8) are vertically arranged on the middle partition (6), and the top end of each flange ring (8) is connected to a filter box (9), and the cavity of each filter box (9) is filled with filter fibers (10); and the central axis of each filter box (9) is perpendicular to the bottom surface; A plurality of first manholes (11) are provided above the middle partition plate (6) on the side wall of the cylinder (1), and a first manhole cover (12) is provided on each of the first manholes (11); a plurality of second manholes (13) are provided below the middle partition plate (6) on the side wall of the cylinder (1), and a second manhole cover (14) is provided on each of the second manholes (13); a plurality of smoke through holes (61) are vertically provided below the inner hole of each flange ring (8) on the middle partition plate (6); and a plurality of ventilation holes (91) are provided on each side of each filter box (9); A first liquid drainage hole (15) is provided on the side wall of the cylinder (1) near the top surface of the middle partition (6); a second liquid drainage hole (16) is provided at the bottom end of the side wall of the cylinder (1); An air outlet hole (4) is provided on the sealing head (2); and an air inlet hole (3) is provided below the middle partition plate (6) on the side wall of the cylinder (1).

2. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 1, characterized in that: The filter box (9) comprises a bottom panel (92) and a filter cover (93) mounted on the bottom panel (92); a plurality of ventilation holes (91) are provided on the bottom panel (92) and the filter cover (93).

3. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 2, characterized in that: The horizontal cross section of the bottom panel (92) is circular.

4. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 3, characterized in that: The horizontal cross-section of the cavity of each filter box (9) is circular.

5. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 4, characterized in that: The horizontal cross-sectional diameter of the bottom panel (92) is larger than the horizontal cross-sectional diameter of the cavity of each filter box (9).

6. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 5, characterized in that: The filter cover (93) is connected to the flange ring (8) via a plurality of connecting screws (17), and the bottom panel (92) is clamped between the filter cover (93) and the flange ring (8).

7. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 1, characterized in that: The flange rings (8) are arranged in a ring array along the central axis of the cylinder (1).

8. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 1, characterized in that: The horizontal cross section of the sealing head (2) is in the shape of a circular ring; the air outlet hole (4) is arranged at the center of the top end of the sealing head (2).

9. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 1, characterized in that: A first observation window (18) is provided above the middle partition plate (6) on the side wall of the cylinder (1).

10. A high-temperature sulfur dioxide flue gas demisting device as claimed in claim 1, characterized in that: A second observation window (19) is provided below the middle partition plate (6) on the side wall of the cylinder (1).

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