High-performance spraying type saturator

Abstract

The invention relates to the technical field of coking, in particular to a high-performance spraying type saturator. The main body structure is a vertical container, the lower part of the container is a crystallization chamber, the upper part is an absorption chamber, and the absorption chamber is communicated with the crystallization chamber through an inner conical section and a downcomer; the lower part of the spiral deacidification device is positioned in the absorption chamber, the upper part of the spiral deacidification device is higher than the absorption chamber, and the spiral deacidification device, the absorption chamber and the crystallization chamber are coaxially arranged. Coke oven gas enters an absorption chamber of the saturator from a gas inlet and is in countercurrent full contact with spraying mother liquor in the absorption chamber to remove ammonia in the gas, then the gas enters the spiral acid remover, and most liquid drops in the gas are removed under the action of a spiral structure, so that the gas and the liquid are better separated, and meanwhile, the gas flow resistance is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coking, in particular to a high-performance spray-type saturator. Background Art

[0002] When the coke oven processes coal, a large amount of gas will be generated. Since the gas contains a large amount of harmful gases, it cannot be directly discharged into the air, so the gas needs to be processed. Bubble saturators and spray saturators are usually used for gas processing. Bubble saturators need to regularly add a large amount of acid and water to the inside, which destroys the conditions for crystallization. In addition, the crystals stay at the bottom of the saturator for a short time, resulting in small crystal particles, which cannot meet normal needs; while the spray saturator is made of stainless steel, has a long service life, integrates pickling absorption, crystallization, acid removal, and evaporation, and has the advantages of small gas system resistance and large crystal particles.

[0003] At present, the process of ammonia recovery by spray saturator is the preferred process for large and medium-sized steel enterprises or independent coking plants in China. This process has the advantages of high equipment integration, high automation level, simple and convenient operation, etc. However, some enterprises have reported that the saturator has encountered problems such as increased gas resistance, large amount of liquid entrained at the gas outlet, and unqualified gas ammonia content index during production, which has affected the normal production of the enterprise. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a high-performance spray-type saturator, which enables better separation of gas and liquid and reduces air flow resistance.

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

[0006] A high-performance spray saturator has a main structure of a vertical container, the lower part of the container is a crystallization chamber, the upper part is an absorption chamber, the absorption chamber and the crystallization chamber are connected through an inner cone section and a downcomer; it also includes a spiral deacidifier, the lower part of the spiral deacidifier is in the absorption chamber, the upper part is higher than the absorption chamber, and the spiral deacidifier is coaxially arranged with the absorption chamber and the crystallization chamber.

[0007] Furthermore, a plurality of crystal extraction pipes are provided at the bottom of the crystallization chamber, and the crystal extraction pipes are arranged in a high and a low manner.

[0008] Furthermore, the crystal extraction tube is provided with a crystal extraction tube cleaning port, and a crystal extraction cage is provided at the bottom end.

[0009] Furthermore, the crystal extraction cage is provided with a plurality of circular openings, and the circular openings are arranged in a staggered manner.

[0010] Furthermore, the absorption chamber includes a front chamber, a rear chamber and an annular spraying chamber, and the front chamber, the rear chamber and the annular spraying chamber are all provided with multiple mother liquor spraying devices; a full flow port is provided at the lower part of the absorption chamber, and a rear chamber water flushing port is provided at the rear chamber of the absorption chamber.

[0011] Furthermore, the full flow port is arranged in an inclined downward manner, the full flow port adopts a square-to-round structure, and a full flow port water flushing port is arranged above the square outlet of the full flow port.

[0012] Furthermore, the spiral acid remover adopts a spiral ring plate structure, and the rotation height of the spiral ring plate is the gas inlet length of the acid remover.

[0013] Furthermore, a gas outlet pipe is provided at the upper part of the spiral deacidifier, and a cross rib plate is provided at the lower part.

[0014] Furthermore, a gas outlet pipe cleaning device is provided on the gas outlet pipe.

[0015] Furthermore, it also includes a skirt seat, the container is fixedly connected to the skirt seat, and the skirt seat is used to support the container.

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

[0017] 1. The present invention is provided with a spiral deacidifier, the lower part of which is in the absorption chamber, and the upper part is higher than the absorption chamber. The spiral deacidifier is coaxially arranged with the absorption chamber and the crystallization chamber. The coke oven gas enters the saturator absorption chamber from the gas inlet, and fully contacts with the sprayed mother liquor in the absorption chamber in countercurrent to remove ammonia in the gas. Then the gas enters the spiral deacidifier. Under the action of the spiral structure, most of the droplets in the gas are removed. The present invention enables better separation of gas and liquid, while reducing airflow resistance.

[0018] 2. The crystal extraction tubes of the present invention are arranged in a high and low manner so as to extract crystal particles at different positions. A crystal extraction tube cleaning port is provided on each crystal extraction tube to prevent crystals from being blocked in the extraction tube.

[0019] 3. The crystal extraction cage at the bottom of the crystal extraction tube of the present invention is provided with a plurality of circular openings which are arranged in a staggered manner to prevent the crystal extraction outlet from being blocked and the extraction of slender particles.

[0020] 4. The absorption chamber of the present invention is divided into a front chamber, a rear chamber and an annular spray chamber. Each chamber is equipped with a number of mother liquor spray devices for spraying circulating mother liquor to absorb ammonia in coal gas. A full flow port is also provided at the lower part of the absorption chamber to allow the mother liquor to flow fully to the full flow trough. The rear chamber of the absorption chamber is also provided with a rear chamber water flushing port for cleaning the crystals on the wall of the rear chamber. The present invention arranges a plurality of mother liquor spray devices in the absorption chamber, and the layout is reasonable to ensure the effect of coal gas deammoniation; the equipment body is provided with a plurality of cleaning points to ensure the maximum elimination of crystals generated on the inner wall of the equipment. When the crystals on the inner wall of the equipment are reduced, the airflow resistance will be reduced.

[0021] 5. The full flow mouth of the present invention is arranged in an inclined downward manner to facilitate the discharge of crystals. The full flow mouth adopts a square-to-round structure to meet the full flow needs and facilitate the connection of process pipes. A full flow mouth water flushing port is arranged above the square outlet of the full flow mouth to regularly clean the crystals in the full flow mouth.

[0022] 6. The spiral ring plate of the spiral deacidifier of the present invention rotates at the same height as the gas inlet length of the deacidifier. Starting from the tangential inlet of the deacidifier, the airflow is forced to rotate downward along the spiral ring plate, generating greater centrifugal force and better separating the liquid. At the same time, the airflow rotates directly to the bottom of the tangential inlet of the deacidifier, avoiding the collision of the airflow after one rotation with the initial airflow, thereby reducing the airflow resistance.

[0023] 7. The spiral deacidifier of the present invention is provided with a gas outlet pipe at the top and a cross rib plate at the bottom to prevent the airflow from sucking liquid into the gas outlet when rotating to the liquid surface.

[0024] 8. The gas outlet pipe of the present invention is provided with a gas outlet pipe cleaning device, which can clean the crystals in the outlet pipe.

[0025] 9. The present invention adopts a skirt support structure, eliminating the civil engineering ring beam required for the original saturator ring seat, thus saving investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic front view of the structure of the present invention.

[0027] Figure 2 for Figure 1 View from above, direction A.

[0028] Figure 3 for Figure 1 View from above, direction B.

[0029] Figure 4 It is a schematic diagram of the upper three-dimensional structure of the present invention.

[0030] Figure 5 It is a schematic diagram of the structure of the crystal extraction tube of the present invention.

[0031] Figure 6 It is a schematic diagram of the full flow port structure of the present invention.

[0032] In the figure: 1-skirt, 2-crystallization chamber, 3-absorption chamber, 4-spiral deacidifier, 5-inner cone section, 6-downcomer, 7-crystallization extraction pipe, 8-crystallization extraction cage, 9-outer cone section, 10-cone section cleaning port, 11-mother liquor spray device, 12-full flow port, 13-full flow port water flushing port, 14-rear chamber water flushing port, 15-spiral ring plate, 16-gas outlet pipe, 17-cross rib plate, 18-gas outlet pipe cleaning device, 19-gas inlet pipe, 20-crystallization extraction pipe cleaning port, 21-small hole, 22-air inlet. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0035] 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, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the description of the present invention, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] like Figure 1-6 As shown, a high-performance spray-type saturator has a main structure of a vertical container, the lower part of the container is a crystallization chamber 2, and the upper part is an absorption chamber 3. The absorption chamber 3 is connected to the crystallization chamber 2 through an inner cone section 5 and a downcomer 6.

[0040] The invention also includes a skirt seat 1, on which the container is fixed, and the skirt seat 1 is used to support the container. The civil engineering ring beam required for the original saturator ring seat may cause the pipeline to collide with the ring beam. The present invention adopts a skirt seat support structure, eliminates the civil engineering ring beam required for the original saturator ring seat, and saves investment.

[0041] It also includes a spiral deacidifier 4 , the lower part of which is located in the absorption chamber 3 , and the upper part of which is higher than the absorption chamber 3 . The spiral deacidifier 4 is coaxially arranged with the absorption chamber 3 and the crystallization chamber 2 .

[0042] A plurality of crystal extraction pipes 7 are arranged at the bottom of the crystallization chamber 2. The crystal extraction pipes 7 are arranged in a high and a low manner so as to extract crystal particles at different positions.

[0043] like Figure 5 As shown, the crystal extraction pipe 7 is L-shaped, consisting of a horizontal pipe and a vertical pipe. The horizontal pipe is fixed to the side wall of the bottom of the crystallization chamber, and the end of the horizontal pipe extends out of the container. The cleaning port 20 of the crystal extraction pipe is fixed to the end of the horizontal pipe and is located outside the container. Liquid is injected through the cleaning port 20 of the crystal extraction pipe to rinse the crystal extraction pipe 7 to prevent crystal blockage in the extraction pipe. A crystal extraction cage 8 is provided at the bottom of the vertical pipe. The crystal extraction cage 8 is provided with a plurality of circular openings and arranged in a staggered manner to prevent blockage of the crystal extraction port and extraction of slender particles.

[0044] The inner cone section 5 is provided with a small hole 21, which connects the crystallization chamber 2 and the absorption chamber 3, and is used to discharge the gas in the crystallization chamber 2. The outer cone section 9 of the crystallization chamber is provided with a cone cleaning port 10 connected to the inner cone section small hole 21, and the small hole 21 is cleaned regularly to prevent the small hole 21 from being blocked by crystals.

[0045] The absorption chamber 3 is divided into a front chamber, a rear chamber and an annular spraying chamber. Each chamber is equipped with a number of mother liquid spraying devices 11 for spraying the circulating mother liquid to absorb the ammonia in the coal gas. The lower part of the absorption chamber 3 is also provided with a full flow port 12 to allow the mother liquid to flow to the full flow tank. The full flow port 12 is arranged in an inclined downward manner to facilitate the discharge of crystals. The full flow port 12 adopts a square-to-circular structure to meet the full flow requirements and facilitate the connection of process pipes. Figure 6 As shown, a full flow mouth water flushing port 13 is arranged above the full flow mouth square outlet to regularly clean the crystals in the full flow mouth.

[0046] The rear chamber of the absorption chamber is also provided with a rear chamber water flushing port 14 for cleaning the crystals on the wall of the rear chamber.

[0047] like Figure 1 , 4 As shown, the spiral deacidifier 4 adopts a spiral ring plate 15 structure, and the spiral ring plate 15 rotates at a height equal to the length of the deacidifier air inlet 22 (the deacidifier gas inlet). Starting from the deacidifier tangential air inlet 22, the airflow is forced to rotate downward along the spiral ring plate, generating a greater centrifugal force and better separating the liquid. At the same time, the airflow rotates directly to the bottom of the deacidifier tangential air inlet 22, avoiding the collision of the airflow after one rotation with the initial airflow, thereby reducing the airflow resistance.

[0048] The spiral deacidifier 4 is provided with a gas outlet pipe 16 at the top and a cross rib plate 17 at the bottom to prevent the gas flow from sucking liquid into the gas outlet when the gas flow rotates to the liquid surface. The gas outlet pipe 16 is provided with a gas outlet pipe cleaning device 18 for cleaning the crystals in the gas outlet pipe.

[0049] The working principle and working process of the present invention are as follows:

[0050] During operation, the coke oven gas enters the absorption chamber 3 from the gas inlet pipe 19, and fully contacts the sprayed mother liquid in the annular absorption chamber in countercurrent, removing most of the ammonia in the gas. The gas enters the rear of the absorption chamber, and further removes the ammonia in the gas under the spraying of the mother liquid in the rear chamber, and then enters the spiral deacidifier 4. The gas is divided into two streams in the front chamber of the absorption chamber 3 and enters the annular chamber for spraying with the circulating mother liquid. The ammonia in the gas is absorbed by the sulfuric acid in the mother liquid to generate ammonium sulfate. The deammonified gas is combined into one stream and enters the rear chamber, and is sprayed with the mother liquid for the last time and enters the spiral deacidifier 4 to separate the acid mist entrained by the gas.

[0051] Most of the liquid droplets in the coal gas are removed by the spiral structure of the spiral deacidifier 4. When the coal gas enters the bottom of the deacidifier, the cross ribs 17 prevent the coal gas from entraining the mother liquid and entering the coal gas outlet.

[0052] The circulating mother liquor that has absorbed ammonia flows from the central downcomer 6 to the bottom of the lower section of the saturator, where the crystal nuclei move upward through the saturated mother liquor, causing the crystals to grow and causing particle classification. The crystals at the bottom are extracted through the crystal extraction pipe 7 and sent to the crystallization tank. The mother liquor overflowing from the full flow port 12 of the saturator flows into the full flow tank, and then is sent to the back chamber of the absorption chamber 3 of the saturator for spraying by a small mother liquor circulation pump.

[0053] The mother liquor outlet of the lower section of the saturator is continuously pumped out by the mother liquor circulation pump and sent to the annular chamber for circulation spraying after being heated by the mother liquor heater. Spraying and cleaning are performed regularly through the cone cleaning port 10, the full flow water flushing port 13, the rear chamber water flushing port 14, the gas outlet pipe cleaning device 18 and the crystal extraction pipe cleaning port 20 to eliminate the crystals attached to the wall and prevent crystal blockage.

[0054] The present invention can effectively solve the problems encountered by the saturator during production, such as increased gas resistance, large amount of entrained liquid at the gas outlet, and unqualified gas ammonia content index, thereby ensuring the normal production of the enterprise.

[0055] The above descriptions are only some specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A high performance spray saturator, characterized in that: The main structure is a vertical container, the lower part of the container is a crystallization chamber, the upper part is an absorption chamber, and the absorption chamber and the crystallization chamber are connected through an inner cone section and a downcomer; It also includes a spiral acid remover, the lower part of which is located in the absorption chamber, and the upper part of which is higher than the absorption chamber. The spiral acid remover is coaxially arranged with the absorption chamber and the crystallization chamber.

2. A high performance spray saturator according to claim 1, characterized in that: A plurality of crystal extraction pipes are arranged at the bottom of the crystallization chamber, and the crystal extraction pipes are arranged in a high-and-low manner.

3. A high performance spray saturator according to claim 2, characterized in that: The crystal extraction pipe is provided with a crystal extraction pipe cleaning port, and a crystal extraction cage is provided at the bottom end.

4. A high performance spray saturator according to claim 3, characterized in that: The crystal extraction cage is provided with a plurality of circular openings, and the circular openings are arranged in a staggered manner.

5. A high performance spray saturator according to claim 1, characterized in that: The absorption chamber comprises a front chamber, a rear chamber and an annular spray chamber, and the front chamber, the rear chamber and the annular spray chamber are all provided with a plurality of mother liquid spray devices; A full flow port is arranged at the lower part of the absorption chamber, and a rear chamber water flushing port is arranged at the rear chamber of the absorption chamber.

6. A high performance spray saturator according to claim 5, characterized in that: The full flow port is arranged in an inclined downward manner, and the full flow port adopts a square-to-circular structure. A full flow port water flushing port is arranged above the square outlet of the full flow port.

7. A high performance spray saturator according to claim 1, characterized in that: The spiral acid remover adopts a spiral ring plate structure, and the rotation height of the spiral ring plate is the gas inlet length of the acid remover.

8. A high performance spray saturator according to claim 7, characterized in that: The spiral deacidifier is provided with a gas outlet pipe at the upper part and a cross rib plate at the lower part.

9. A high performance spray saturator according to claim 8, characterized in that: The gas outlet pipe is provided with a gas outlet pipe cleaning device.

10. A high performance spray saturator according to claim 1, characterized in that: The utility model also comprises a skirt seat, on which the container is fixedly connected, and the skirt seat is used for supporting the container.

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