A regeneration tower

Abstract

The present application relates to coking technical field, especially to a kind of regeneration tower.The tower body (4) is vertically arranged, head (12) is fixedly connected in the both ends of tower body (4), and bottom end head (12) is fixedly connected on apron (1).It also includes desulfurization liquid inlet (13) connected with bottom end head (12), and gas-liquid mixer (3) installed in tower body (4) from bottom to top in sequence, air inlet (5), sieve plate device (7), desulfurization liquid outlet (8), sulfur foam discharge device (9), also includes gas exhaust (11) fixedly connected on top head (12);The air inlet (5) is connected with gas-liquid mixer (3), and gas-liquid mixer (3) is connected with desulfurization liquid inlet (13);Desulfurization liquid outlet (8) is provided with one, two-stage foam separator.Desulfurization lean liquid is discharged from the middle of regeneration tower, and the height of tower is reduced, and the air content in desulfurization liquid is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of coking, in particular to a regeneration tower. Background Art

[0002] HPF desulfurization is an oxidative desulfurization and decyanation process using ammonia as an alkaline source and HPF as a catalyst. Desulfurization using an HPF catalyst is a liquid-phase oxidation reaction. Compared to other catalysts, it catalyzes both the absorption and regeneration processes. Therefore, HPF offers significant advantages, including high activity and excellent fluidity. Precooled coal gas enters the desulfurization tower, where it countercurrently contacts the desulfurization lean liquid sprayed from the tower's top to absorb hydrogen sulfide and hydrogen cyanide from the gas. The desulfurization rich liquid is pumped into the regeneration tower using a desulfurization liquid pump. Compressed air is introduced from the bottom of the regeneration tower, causing the desulfurization rich liquid to undergo oxidation and regeneration within the tower. The desulfurization rich liquid, having absorbed hydrogen sulfide, reacts to produce elemental sulfur. The regenerated desulfurization lean liquid then flows from the top of the tower through a level regulator and back into the desulfurization tower for recycling.

[0003] However, most existing regeneration towers adopt a method in which the desulfurized lean liquid flows to the desulfurization tower by gravity. The regeneration tower is higher than the desulfurization tower, and the desulfurized liquid carries air. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a regeneration tower, wherein the desulfurized lean liquid is discharged from the middle of the regeneration tower, thereby reducing the tower height and the air content in the desulfurized liquid.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A regeneration tower comprises a skirt (1), a head (12), and a tower body (4). The tower body (4) is arranged vertically, the head (12) is fixedly connected to both ends of the tower body (4), and the bottom head (12) is fixedly connected to the skirt (1). The tower also comprises a desulfurization liquid inlet (13) connected to the bottom head (12), and a gas-liquid mixer (3), an air inlet (5), a sieve plate device (7), a desulfurization liquid outlet (8), and a sulfur foam discharge device (9) sequentially installed in the tower body (4) from bottom to top. The tower also comprises a gas discharge outlet (11) fixedly connected to the top head (12); the desulfurization liquid outlet (8) is provided with a primary and secondary foam separator.

[0007] Furthermore, it also includes a manhole (6) and an observation hole (10), wherein the manhole (6) is fixedly connected to the outer wall of the tower body (4), and the observation hole (10) is fixedly connected to the top end cap (12).

[0008] Furthermore, the gas-liquid mixer (3) is in the form of a venturi tube, comprising a contraction section (41), a throat section (42), an expansion section (43) and a connecting plate (44); the contraction section (41), the throat section (42), the expansion section (43) and the connecting plate (44) are connected in sequence from top to bottom.

[0009] Furthermore, the air inlet (5) comprises an annular tube (31), a jet tube (32), a connecting tube (33) and a flange (34); the jet tube (32) is conical, the bottom tube opening is narrowed, and the jet tube (32) is located inside the contraction section (41); the jet tube (32) is fixed to the bottom of the annular tube (31), the annular tube (31) is connected to the connecting tube (33), and the connecting tube (33) is connected to the flange (34).

[0010] Furthermore, the desulfurized liquid outlet (8) includes a cylindrical body (21), a support plate (22), a conical section (23), a connecting pipe (24), an elbow (25), a transverse connecting plate (26), a longitudinal connecting plate (27), a longitudinal plate (28), and a transverse plate (29); the cylindrical body (21) is fixed to the inner wall of the tower body (4) through the support plate (22), and the cylindrical body (21), the conical section (23), the connecting pipe (24), and the elbow (25) are connected in sequence from top to bottom.

[0011] The transverse connecting plate (26) and the longitudinal connecting plate (27) are fixedly connected in the cylindrical body (21), and the longitudinal plate (28) and the transverse plate (29) are fixedly connected in the conical section (23). The cylindrical body (21), the transverse connecting plate (26) and the longitudinal connecting plate (27) constitute a primary foam separator, and the conical section (23), the longitudinal plate (28) and the transverse plate (29) constitute a secondary foam separator.

[0012] Furthermore, the sulfur foam discharge device (9) includes a cleaning pipe (51), a circular cylinder (52), a foam outlet (53) and an annular plate (54); the annular plate (54) is arranged obliquely, the circular cylinder (52) is fixedly connected to the annular plate (54), the cleaning pipe (51) and the foam outlet (53) are fixedly connected to the tower body (4) one above and one below, and the foam outlet (53) is located at the lower end of the annular plate (54).

[0013] Furthermore, the sieve plate device (7) comprises a sieve plate (61) and a support beam (62); the sieve plate (61) is a flat plate with an opening, and is mounted on the support beam (62).

[0014] The desulfurization liquid inlet (13) is opened, and the opening position is inside the bottom end head (12).

[0015] Furthermore, it also includes a vent (2), which is fixedly connected to the bottom end cover (12).

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this invention, the desulfurized rich liquid from the desulfurization tower is uniformly sprayed onto the headstock through the desulfurization liquid inlet, flowing upward. Air is introduced into the desulfurized rich liquid at the gas-liquid mixer through a spray pipe, where it undergoes a primary reaction. After exiting the mixer, it further reacts with the desulfurized liquid at the desulfurization liquid inlet. Here, the desulfurized liquid flows upward and is drawn into the mixer inlet for further reaction. The upward-flowing desulfurized liquid and air experience a reduced cross-section at the sieve plate assembly, accelerating the flow rate and further accelerating the reaction to form a desulfurized lean liquid.

[0018] The desulfurized lean liquid flows upward to the first-stage foam separator at the outlet of the desulfurized liquid to complete the gas-liquid separation; in the second-stage foam separator, the gas and liquid continue to separate to reduce the air content in the desulfurized liquid, and the desulfurized lean liquid is discharged from the middle of the regeneration tower.

[0019] The present invention reduces the tower height and reduces the air content in the desulfurization liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic front cross-sectional view of the structure of the present invention;

[0021] Figure 2 yes Figure 1 CC cross-sectional view;

[0022] Figure 3 Schematic diagram of the injection pipe structure of the present invention;

[0023] Figure 4 Schematic diagram of the sieve plate structure of the present invention;

[0024] Figure 5 yes Figure 1 AA cross-sectional view;

[0025] Figure 6 yes Figure 1 BB cross-sectional view;

[0026] Figure 7 This is a schematic diagram of the opening of the cleaning pipe of the present invention;

[0027] Figure 8 It is a schematic diagram of the desulfurization liquid inlet opening of the present invention.

[0028] In the figure: 1 - skirt 2 - vent 3 - gas-liquid mixer 4 - tower body 5 - air inlet 6 - manhole 7 - sieve plate device 8 - desulfurization liquid outlet 9 - sulfur foam discharge device 10 - observation hole 11 - gas outlet 12 - head 13 - desulfurization liquid inlet 21 - cylinder 22 - support plate 23 - cone section 24 - connecting pipe 25 - elbow 26 - transverse connecting plate 27 - longitudinal connecting plate 28 - longitudinal plate 29 - transverse plate 31 - annular pipe 32 - injection pipe 33 - connecting pipe 34 - flange 41 - contraction section 42 - throat section 43 - expansion section 44 - connecting plate 51 - cleaning pipe 52 - circular cylinder 53 - foam outlet 54 - annular plate 61 - sieve plate 62 - support beam DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] [Example]

[0032] like Figure 1-8 As shown, a regeneration tower comprises a skirt (1), a vent (2), a gas-liquid mixer (3), a tower body (4), an air inlet (5), a manhole (6), a sieve plate device (7), a desulfurization liquid outlet (8), a sulfur foam discharge device (9), an observation hole (10), a gas discharge outlet (11), a head (12) and a desulfurization liquid inlet (13).

[0033] The tower body (4) is arranged vertically, and the end caps (12) are fixedly connected to both ends of the tower body (4), and the bottom end cap (12) is fixedly connected to the skirt seat (1). Five manholes (6) are respectively fixedly connected to the outer walls of the upper, middle and lower tower bodies (4), the observation hole (10) is fixedly connected to the top end cap (12), and the vent (2) is fixedly connected to the bottom end cap (12).

[0034] The desulfurization liquid inlet (13) extends into the skirt (1) and then into the bottom end head (12). The desulfurization liquid inlet (13) is opened inside the bottom end head (12), and the desulfurization liquid is evenly sprayed onto the head (12), where it continues to mix with air for regeneration.

[0035] The gas-liquid mixer (3), the air inlet (5), the sieve plate device (7), the desulfurized liquid outlet (8), and the sulfur foam discharge device (9) are sequentially installed in the tower body (4) from bottom to top.

[0036] The gas-liquid mixer (3) is in the form of a venturi tube, comprising a contraction section (41), a throat section (42), an expansion section (43) and a connecting plate (44). The contraction section (41), the throat section (42), the expansion section (43) and the connecting plate (44) are sequentially connected from top to bottom, and the connecting plate (44) is fixedly connected to the bottom end cover (12).

[0037] The air inlet (5) is located above the gas-liquid mixer (3) and includes an annular pipe (31), an injection pipe (32), a connecting pipe (33) and a flange (34). The annular pipe (31) is annular in shape, and the injection pipe (32) is evenly distributed and fixed to the bottom of the annular pipe (31). The annular pipe (31) is connected to the connecting pipe (33), and the connecting pipe (33) is connected to the flange (34). The flange (34) is fixed to the side wall of the lower part of the tower body (4).

[0038] The injection pipe (32) is tapered, with a narrowed bottom opening. The injection pipe (32) is located inside the contraction section (41) and injects the desulfurization liquid to complete the oxidation reaction.

[0039] The sieve plate device (7) is located above the air inlet (5) and includes a sieve plate (61) and a support beam (62). The sieve plate 61 is a flat plate with a hole, which is divided into blocks according to the tower diameter and is installed on the support beam (62) through a manhole (6). The support beam (62) is fixed to the inner wall of the tower body (4).

[0040] The desulfurized liquid outlet (8) is located above the sieve plate device (7) and includes a cylindrical body (21), a support plate (22), a cone section (23), a connecting pipe (24), an elbow (25), a transverse connecting plate (26), a longitudinal connecting plate (27), a longitudinal plate (28), and a transverse plate (29). The cylindrical body (21) is fixed to the inner wall of the tower body (4) through the support plate (22). The cylindrical body (21), the cone section (23), the connecting pipe (24), and the elbow (25) are connected in sequence from top to bottom.

[0041] The transverse connecting plate (26) and the longitudinal connecting plate (27) are fixedly connected to the cylindrical body (21), and the longitudinal plate (28) and the transverse plate (29) are fixedly connected to the conical section (23). The cylindrical body (21), the transverse connecting plate (26), and the longitudinal connecting plate (27) constitute a primary foam separator, and the conical section (23), the longitudinal plate (28), and the transverse plate (29) constitute a secondary foam separator. Gas and liquid continue to separate here, reducing the air content in the desulfurized liquid.

[0042] The sulfur foam discharge device (9) is located above the desulfurization liquid outlet (8) and includes a cleaning pipe (51), a circular cylinder (52), a foam outlet (53) and an annular plate (54). The annular plate (54) is arranged obliquely, the circular cylinder (52) is fixed to the annular plate (54), the cleaning pipe (51) and the foam outlet (53) are fixed to the tower body (4) one above and one below, and the foam outlet (53) is located at the lower end of the annular plate (54).

[0043] The foam in the circular cylinder (52) flows from the inside to the annular space formed by the annular plate (54), the circular cylinder (52) and the tower body (4), flows out along the foam outlet (53), and is cleaned by the cleaning pipe (51).

[0044] The desulfurized rich liquid from the desulfurization tower is uniformly sprayed onto the head (12) inside the equipment through the desulfurized liquid inlet (13) and flows upward. The air is ejected into the desulfurized rich liquid at the gas-liquid mixer (3) through the injection pipe (32), and a primary reaction is achieved in the gas-liquid mixer (3). After exiting the mixer, it further reacts with the desulfurized liquid at the desulfurized liquid inlet (13). Here, the desulfurized liquid flows upward and is sucked into the mixer again to react at the mixer inlet. The upward-flowing desulfurized liquid and air have a reduced flow cross-section at the sieve plate device (7), which speeds up the flow rate and further accelerates the reaction to form desulfurized lean liquid. The desulfurized lean liquid flows upward to the first-level foam separator at the desulfurized liquid outlet (8) to complete gas-liquid separation; in the second-level foam separator, the gas and liquid continue to separate, reducing the air content in the desulfurized liquid. The desulfurized lean liquid is sent to the desulfurization tower to complete the absorption reaction. The sulfur foam containing elemental sulfur and air flows upward. At the sulfur foam discharge device (9), the sulfur foam and part of the desulfurization liquid enter the annular space and enter the sulfur foam tank through the sulfur foam discharge port (53). The sulfur foam discharge is observed through the top observation hole (10) and the annular space is cleaned.

[0045] The desulfurized lean liquid of the present invention is discharged from the middle of the regeneration tower, the tower height is reduced, and the air content in the desulfurized liquid is reduced.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A regeneration tower, comprising a skirt (1), a head (12), and a tower body (4), wherein the tower body (4) is arranged vertically, the head (12) is fixedly connected to both ends of the tower body (4), and the bottom head (12) is fixedly connected to the skirt (1); characterized in that: It also includes a desulfurization liquid inlet (13) connected to the bottom end head (12), and a gas-liquid mixer (3), an air inlet (5), a sieve plate device (7), a desulfurization liquid outlet (8), and a sulfur foam discharge device (9) installed in the tower body (4) from bottom to top, and also includes a gas discharge outlet (11) fixed to the top end head (12); the desulfurization liquid outlet (8) is provided with a primary and secondary foam separator; It also includes a manhole (6) and an observation hole (10), wherein the manhole (6) is fixedly connected to the outer wall of the tower body (4), and the observation hole (10) is fixedly connected to the top end cap (12); The gas-liquid mixer (3) is in the form of a venturi tube, comprising a contraction section (41), a throat section (42), an expansion section (43) and a connecting plate (44); the contraction section (41), the throat section (42), the expansion section (43) and the connecting plate (44) are connected in sequence from top to bottom; The air inlet (5) comprises an annular tube (31), an injection tube (32), a connecting tube (33) and a flange (34); the injection tube (32) is conical, with a narrowed bottom opening, and the injection tube (32) is located inside the contraction section (41); the injection tube (32) is fixed to the bottom of the annular tube (31), the annular tube (31) is connected to the connecting tube (33), and the connecting tube (33) is connected to the flange (34).

2. A regeneration tower according to claim 1, characterized in that: The desulfurized liquid outlet (8) comprises a cylindrical body (21), a support plate (22), a conical section (23), a connecting pipe (24), an elbow (25), a transverse connecting plate (26), a longitudinal connecting plate (27), a longitudinal plate (28), and a transverse plate (29); the cylindrical body (21) is fixed to the inner wall of the tower body (4) through the support plate (22), and the cylindrical body (21), the conical section (23), the connecting pipe (24), and the elbow (25) are connected in sequence from top to bottom; The transverse connecting plate (26) and the longitudinal connecting plate (27) are fixedly connected in the cylindrical body (21), and the longitudinal plate (28) and the transverse plate (29) are fixedly connected in the conical section (23). The cylindrical body (21), the transverse connecting plate (26), and the longitudinal connecting plate (27) constitute a primary foam separator, and the conical section (23), the longitudinal plate (28), and the transverse plate (29) constitute a secondary foam separator.

3. A regeneration tower according to claim 1, characterized in that: The sulfur foam discharge device (9) comprises a cleaning pipe (51), a circular cylinder (52), a foam outlet (53) and an annular plate (54); the annular plate (54) is arranged obliquely, the circular cylinder (52) is fixedly connected to the annular plate (54), the cleaning pipe (51) and the foam outlet (53) are fixedly connected to the tower body (4) one above and one below, and the foam outlet (53) is located at the lower end of the annular plate (54).

4. A regeneration tower according to claim 1, characterized in that: The sieve plate device (7) comprises a sieve plate (61) and a support beam (62); the sieve plate (61) is a flat plate with an opening, and is mounted on the support beam (62).

5. A regeneration tower according to claim 1, characterized in that: The desulfurization liquid inlet (13) is opened, and the opening position is inside the bottom end head (12).

6. A regeneration tower according to claim 1, characterized in that: It also includes a vent (2), which is fixed to the bottom end cover (12).

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