Anti-blocking ejector for removing hydrogen sulfide through complex iron acid gas wet oxidation

Abstract

The utility model relates to an anti-blocking ejector for removing hydrogen sulfide through complex iron acid gas wet oxidation. The device comprises an air suction chamber, an acid gas inlet pipe orifice is welded to the top of the air suction chamber, and the device is characterized in that a complexing iron absorption liquid inlet pipe orifice is welded to the side face of the air suction chamber, inserted into the horizontal center of the air suction chamber and provided with a downward nozzle, an absorption section is welded to the bottom of the air suction chamber, and the absorption section is in a funnel shape. A mixing straight pipe section is welded to the bottom of the mixing pipe, a first hole digging flange cover is welded to the middle of the mixing straight pipe section, and the mixing straight pipe section is fixedly connected with a straight tail sleeve arranged outside the mixing straight pipe section in a sleeving mode through the first hole digging flange cover. The technical problem that an existing ejector is prone to being blocked and difficult to clean is solved.

Description

Technical Field

[0001] The utility model relates to chemical equipment, in particular to an anti-blocking ejector for wet oxidation of hydrogen sulfide in acidic gas with complex iron. Background Technique

[0002] An ejector is a commonly used gas-liquid mixing device in chemical production, which has the advantages of high gas-liquid mass transfer efficiency and small equipment volume. It uses a liquid with a certain pressure to generate a negative pressure in the suction chamber through a high-speed jet from a nozzle, thereby sucking acidic gas. Existing ejectors for removing hydrogen sulfide from acidic gas are applied to the wet oxidation desulfurization process with complex iron. The complex iron absorbent and hydrogen sulfide quickly contact and react in the ejector to generate elemental sulfur. Due to the long-term operation of the ejector, the tail pipe is prone to sulfur caking and blockage, resulting in unsmooth air extraction during operation. Eventually, the gas-liquid mass transfer efficiency decreases and there are also problems such as inconvenient cleaning. Therefore, it is very beneficial to invent an anti-blocking ejector for wet oxidation of hydrogen sulfide in acidic gas with complex iron to overcome the blockage problem. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems of blockage and difficult cleaning existing in the existing technology of ejectors for wet oxidation of hydrogen sulfide in acidic gas with complex iron, and to propose an anti-blocking ejector for wet oxidation of hydrogen sulfide in acidic gas with complex iron.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme:

[0005] An anti-blocking ejector for wet oxidation of hydrogen sulfide in acidic gas with complex iron includes a suction chamber. A top of the suction chamber is welded with an acidic gas inlet pipe orifice. A top of the acidic gas inlet pipe orifice is provided with a first loose flange ring for convenient connection with a pipeline. A side of the suction chamber is welded with a desulfurization liquid inlet pipe orifice. The desulfurization liquid inlet pipe orifice is inserted into a horizontal center of the suction chamber and is provided with a downward nozzle. The desulfurization liquid inlet pipe orifice is provided with a second loose flange ring for convenient connection with a pipeline. A bottom of the suction chamber is welded with an absorption section. The absorption section is funnel-shaped and a bottom of the absorption section is welded with a mixing straight pipe section. A middle part of the mixing straight pipe section is welded with a first perforated flange cover, and is connected and fixed with a straight tail sleeve pipe sleeved outside the mixing straight pipe section through the first perforated flange cover.

[0006] Preferably, the suction chamber is connected by a first pair of flanges below the complex iron absorbent inlet pipe orifice for convenient disassembly and maintenance.

[0007] Preferably, a plurality of holes are symmetrically opened above the first perforated flange cover and are welded with flushing branch pipes connected to flushing liquid by flanges.

[0008] Preferably, a straight tail sleeve pipe is sleeved outside the mixing straight pipe section. A top of the straight tail sleeve pipe is welded with a first flange ring and is bolted to the first perforated flange cover. A bottom of the straight tail sleeve pipe is provided with a third loose flange ring for convenient connection with a pipeline.

[0009] Compared with the existing jet injector technology for wet oxidation of hydrogen sulfide in acidic gas with complex iron, the utility model has the following advantages:

[0010] 1. By setting the acidic gas inlet pipe orifice at the top of the suction chamber, the risk of the complex iron absorption liquid flowing back into the acidic gas inlet pipe orifice and blocking during fluctuations is reduced, and the first loose flange ring is adopted for the acidic gas inlet pipe orifice, which is convenient for the construction and installation of the pipe orifice docking.

[0011] 2. By setting the suction chamber to be connected by the first mating flange below the inlet pipe orifice of the complex iron desulfurization liquid, it is convenient for the maintenance and cleaning of the suction chamber and the nozzle;

[0012] 3. By setting the outer part of the mixing straight pipe section of the absorption section to be connected by a straight tail sleeve instead of directly welding to the conventional bell mouth structure, the risk of blockage at the dead angle of the reduced diameter part is reduced.

[0013] 4. By setting multiple holes symmetrically above the first dug-out flange cover and welding a flushing branch pipe connected by a flange to flush with flushing liquid, while not affecting the process performance of the jet injector for wet oxidation of hydrogen sulfide in acidic gas with complex iron, the inner wall of the straight tail sleeve is flushed, the blockage risk is reduced, and online cleaning can be realized at the same time. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is Figure 1 the A-A view of

[0016] In the figure: 1 first loose flange ring, 2 acidic gas inlet pipe orifice, 3 suction chamber, 4 first mating flange, 5 absorption section, 6 mixing straight pipe section, 7 first dug-out flange cover, 8 first flange ring, 9 straight tail sleeve, 10 third loose flange ring, 11 inlet pipe orifice of complex iron absorbent, 12 second loose flange ring, 13 flushing branch pipe. Specific Embodiments

[0017] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments.

[0018] Refer to Figure 1-2, the utility model includes an air suction chamber 3. The top of the air suction chamber 3 is welded with an acid gas inlet pipe orifice 2. The top of the acid gas inlet pipe orifice 2 is equipped with a first loose flange ring 1 for convenient connection with a pipeline. The side of the air suction chamber 3 is welded with a complex iron absorption liquid inlet pipe orifice 11. The complex iron absorption liquid inlet pipe orifice 11 is inserted into the horizontal center of the air suction chamber and is equipped with a downward nozzle. The complex iron absorption liquid inlet pipe orifice 11 is installed with a second loose flange ring 12 for convenient connection with a pipeline. The air suction chamber 3 is connected by a first mating flange 4 below the desulfurization liquid inlet pipe orifice 11 for convenient disassembly and maintenance. The bottom of the air suction chamber 3 is welded with an absorption section 5. The absorption section 5 is funnel-shaped and the bottom is welded with a mixing straight pipe section 6. A first dug hole flange cover 7 is welded in the middle of the mixing straight pipe section 6. A straight tail sleeve 9 is sleeved outside the mixing straight pipe section 6. The top of the straight tail sleeve 9 is welded with a first flange ring 8 and is bolted to the first dug hole flange cover 7. The bottom of the straight tail sleeve 9 is installed with a third loose flange ring 10 for convenient connection with a pipeline.

[0019] In the utility model, a plurality of flushing branch pipes 13 are symmetrically installed on the first dug hole flange cover 7 to connect to flushing liquid to flush the inner wall of the straight tail sleeve 9 to reduce blockage.

[0020] Working principle: During use, it is connected to the acid gas pipeline through the first loose flange ring 1, connected to the complex iron absorption liquid pipeline through the second loose flange ring 12, and connected to the mixture pipeline through the third loose flange ring 13. The acid gas wet oxidation desulfurization hydrogen sulfide prevention and blockage ejector is installed in a suitable position. The pressurized complex iron absorption liquid enters through the complex iron absorption liquid inlet pipe orifice 11. After being ejected at high speed from the nozzle, a negative pressure is formed in the air suction chamber 3, and acid gas is suctioned through the acid gas inlet pipe orifice 2. The complex iron absorption liquid and the acid gas are fully mixed and reacted in the mixing straight pipe section 6 at the funnel-shaped bottom of the absorption section 5 to remove hydrogen sulfide, and then the gas-liquid mixture enters the straight tail sleeve 9. The inner wall of the straight tail sleeve 9 is flushed in cooperation with the flushing branch pipes 13 above the first dug hole flange cover 7, achieving the requirement of stable hydrogen sulfide removal while avoiding blockage.

[0021] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the utility model.

Claims

1. A complex iron acid gas wet oxidation desulfurization hydrogen sulfide anti-blocking ejector, which comprises an air intake chamber (3), the top of which is welded with an acid gas inlet pipe (2), characterized in that: A first lap joint flange ring (1) is installed at the top of the acid gas inlet pipe opening (2); a complex iron absorption liquid inlet pipe opening (11) is welded on the side of the suction chamber (3); the complex iron absorption liquid inlet pipe opening (11) is inserted into the horizontal center of the suction chamber (3) and has a downward-facing nozzle; a second lap joint flange ring (12) is installed on the complex iron absorption liquid inlet pipe opening (11); an absorption section (5) is welded at the bottom of the suction chamber (3); the absorption section (5) is funnel-shaped, and a mixing straight pipe section (6) is welded at the bottom; a first hole-punched flange cover (7) is welded in the middle of the mixing straight pipe section (6), and is connected and fixed to a straight tail sleeve (9) sleeved on the outside of the mixing straight pipe section (6) through the first hole-punched flange cover (7).

2. The anti-blocking injector for complex iron acidic gas wet oxidation desulfurization of hydrogen according to claim 1, characterized in that: The air suction chamber (3) is connected below the complex iron absorption liquid inlet pipe opening (11) by using a first matching flange (4).

3. The anti-blocking injector for complex iron acidic gas wet oxidation desulfurization of hydrogen according to claim 1, characterized in that: A plurality of holes are symmetrically opened on the top of the first hole-digging flange cover (7) and a flushing branch pipe (13) connected by a flange is welded thereto.

4. The anti-blocking injector for complex iron acidic gas wet oxidation desulfurization of hydrogen according to claim 1, characterized in that: A first flange ring (8) is welded to the top of the straight tail casing (9) and is connected to the first hole-digging flange cover (7) by bolts. A third loose flange ring (10) is installed at the bottom of the straight tail casing (9).

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