A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclone

Abstract

The utility model discloses a kind of bubble type cyclone upgrading devices, relate to coal immersion washing upgrading device technical field.A kind of bubble type cyclone upgrading device, including immersion washing pipe, the top of immersion washing pipe is feed inlet, the bottom of immersion washing pipe is discharge port, control valve is equipped at the discharge port of immersion washing pipe;Immersion washing pipe is close to the end of discharge port and is communicated with immersion washing liquid input pipe and flue gas input pipe;Multiple baffles are spaced apart in the extension direction of immersion washing pipe inside it.Adopting the utility model, it can be immersed and washed to large particle size coal block and upgrading to remove AAEM in coal block, coal block does not need to be ground, and hot flue gas discharged by power plant into atmosphere can be utilized, under the action of hot flue gas intensification water washing, realize the alkali removal upgrading of large particle size coal block, operation process is simpler, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of coal washing and upgrading equipment, and more specifically, to a bubbling cyclone upgrading device. Background Technology

[0002] Because coal lumps contain a significant amount of impurities such as alkali metals and alkaline earth metals (AAEMs), existing technologies primarily employ flotation devices to wash the coal lumps and remove AAEMs. Due to the large size of coal lumps, traditional flotation devices mainly use micron-sized coal lumps, requiring the coal lumps to be ground into micron-sized pieces. This necessitates a relatively fine grinding and screening process as well as a complex dewatering process, resulting in a complicated operation and high costs. Utility Model Content

[0003] The purpose of this invention is to provide a bubbling cyclone upgrading device that can wash and upgrade large-diameter coal blocks to remove AAEM from the coal blocks without grinding them. It can also utilize the hot flue gas discharged into the atmosphere from power plants. Under the enhanced water washing effect of the hot flue gas, the dealkali upgrading of large-diameter coal blocks is achieved. The operation process is simpler and the production cost is reduced.

[0004] The technical solution adopted in this utility model is as follows:

[0005] This application provides a bubbling cyclone upgrading device, including a washing tube, the top of which is a feed inlet and the bottom of which is a discharge outlet. A control valve is provided at the discharge outlet of the washing tube. One end of the washing tube near the discharge outlet is connected to a washing liquid input pipe and a flue gas input pipe. Multiple baffles are spaced apart inside the washing tube along its extension direction.

[0006] Furthermore, in some embodiments of this utility model, the plurality of baffles are spirally distributed along the extension direction of the immersion tube.

[0007] Furthermore, in some embodiments of this utility model, the immersion tube is cylindrical, the baffle is semi-circular, and one arc-shaped side of the baffle abuts against the inner wall of the immersion tube.

[0008] Furthermore, in some embodiments of this utility model, the immersion tube is provided with a plurality of mounting rods, and the baffle is fixedly sleeved on the mounting rods.

[0009] Furthermore, in some embodiments of this utility model, a screw conveyor is also included, wherein the screw conveyor is provided with a feed hopper, and the discharge end of the screw conveyor is connected to the feed inlet.

[0010] Furthermore, in some embodiments of this utility model, a filter barrel is also included, the filter barrel having a plurality of filter holes, the filter barrel being located below the discharge port.

[0011] Furthermore, in some embodiments of this utility model, a liquid collection tank is also included, which is located below the filter tank, and the filter holes are located inside the liquid collection tank.

[0012] Furthermore, in some embodiments of this utility model, the end of the immersion pipe near the feed inlet is connected to a return water pipe, and the end of the return water pipe away from the immersion pipe is connected to the collection tank.

[0013] Furthermore, in some embodiments of this utility model, a storage tank and a water pump are also included, wherein the inlet end of the water pump is connected to the storage tank and the outlet end of the water pump is connected to the immersion liquid input pipe.

[0014] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects:

[0015] 1. This utility model can wash and upgrade large-diameter coal blocks to remove AAEM from the coal blocks without grinding them. It can also utilize the hot flue gas discharged into the atmosphere from power plants. Under the enhanced water washing effect of the hot flue gas, the dealkali upgrading of large-diameter coal blocks can be achieved. The operation process is simpler and the production cost is reduced.

[0016] 2. The baffles of this utility model are arranged in a spiral shape, which allows the bubble flow formed by the large flow of washing liquid and hot flue gas to rotate from bottom to top. At the same time, the coal block rotates and falls from top to bottom under the action of gravity, bubble flow resistance and buoyancy. This facilitates the mass transfer enhancement and disturbance of the washing liquid carried by the bubbles in the coal pores, which helps to improve the dealkali and quality improvement efficiency of the coal block.

[0017] 3. This utility model can use a screw conveyor to transport coal blocks in the feed hopper to the feed inlet in sequence, which is convenient to operate and saves manpower; moreover, the conveying speed of the screw conveyor can be adjusted according to actual needs, thereby adjusting the speed at which the coal blocks are fed into the washing pipe, making operation convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A front view of the bubbling cyclone upgrading device provided in an embodiment of this utility model;

[0020] Figure 2 A partial cross-sectional view of the bubbling cyclone upgrading device provided in this embodiment of the utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 A schematic diagram of the baffle and mounting rod provided in an embodiment of this utility model.

[0023] Icons: 1-Immersion pipe; 2-Inlet; 3-Outlet; 4-Immersion liquid input pipe; 5-Flue gas input pipe; 6-Baffle; 7-Mounting rod; 8-Screw conveyor; 9-Feed hopper; 10-Filter barrel; 11-Filter hole; 12-Collection tank; 13-Return water pipe; 14-Storage tank; 15-Water pump; 16-Control valve. Detailed Implementation

[0024] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] Example 1

[0026] Please refer to Figure 1 and Figure 2 This embodiment provides a bubbling cyclone upgrading device for washing and upgrading large-diameter coal blocks to remove AAEM from the coal blocks. The large-diameter coal blocks in this embodiment are mainly coal blocks with a diameter of about 3-5 cm. It includes a washing pipe 1, with an inlet 2 at the top and an outlet 3 at the bottom. In this embodiment, the washing pipe 1 is mainly placed vertically and can be vertically fixed to the ground or other locations using a mounting bracket. The inlet 2 at the top of the washing pipe 1 is used for feeding coal blocks. After being washed and upgraded, the coal blocks enter the washing pipe 1 through the inlet 2 and then fall out through the outlet 3. In this embodiment, the washing pipe 1 is equipped with a control valve 16 at the discharge port 3. The control valve 16 is used to adjust the opening of the discharge port 3. During the washing process, the discharge port 3 can be closed or opened very slightly by the control valve 16 to ensure that the coal blocks do not fall during washing and to ensure that the washing liquid and hot flue gas entering the washing pipe 1 flow upward. When the coal needs to be unloaded after washing, the control valve 16 can be fully opened to allow the coal blocks to fall out from the discharge port 3.

[0027] In this embodiment, the end of the washing pipe 1 near the discharge port 3 is connected to the washing liquid input pipe 4 and the flue gas input pipe 5. The washing liquid input pipe 4 is used to input the washing liquid into the washing pipe 1 so that the washing liquid mixes with the coal. The washing liquid can be a liquid such as water. The flue gas input pipe 5 is used to connect to the hot flue gas pipeline discharged into the atmosphere by the power plant. The hot flue gas enters the washing pipe 1 through the flue gas input pipe 5. The coal moves from top to bottom, and the washing liquid and hot flue gas move from bottom to top.

[0028] In this embodiment, multiple baffles 6 are provided at intervals along the extension direction inside the immersion pipe 1. The baffles 6 are horizontally arranged. By setting multiple baffles 6, when the coal block falls from top to bottom, the coal block will fall onto each baffle 6 in sequence. By receiving the coal block through each baffle 6, the falling of the coal block can be slowed down, the falling time of the coal block can be increased, and thus the immersion time of the coal block mixed and reacted with the immersion liquid and hot flue gas can be increased.

[0029] The specific principle is as follows:

[0030] Coal lumps enter the washing pipe 1 through the feed inlet 2 at the top. The coal lumps fall downwards within the washing pipe 1, while the washing liquid is simultaneously transported into the washing pipe 1 through the washing liquid inlet pipe 4. Hot flue gas discharged from the power plant into the atmosphere is transported into the washing pipe 1 through the flue gas inlet pipe 5. The hot flue gas and washing liquid flow upwards and mix with the coal lumps. The hot flue gas contains a large amount of CO2, which mixes with the washing liquid to form an acidic washing liquid. This acidic washing liquid can effectively deash high-alkali coal lumps.

[0031] The main chemical reactions are as follows:

[0032] 1. Carbonic acid reacts with soluble organic alkali metals of ammonium acetate (such as R-COONa, (R-COO)2Ca), and the H+ ions from the carbonic acid ionize. + It can attack organic AAEMs, such as Na or Ca bound by carboxyl groups, to form soluble carbonates:

[0033]

[0034] 2. Alkali metal carbonates react with sparingly soluble inorganic alkaline earth metal salts (such as CaSO4). Raw coal or the alkali metal carbonates produced in the reaction will react with CaSO4 to form a solubility product constant K. SP With lower CaCO3 concentrations, this reaction occurs in solution and the CaCO3 products exist at the micron level in the eluent, achieving the removal of alkaline earth metals.

[0035]

[0036] 3. Carbonic acid reacts with acid-soluble inorganic alkaline earth metal salts (such as CaCO3). The solubility of CaCO3 in aqueous solution is only 0.0014 g / 100 mL, but in a carbonic acid-rich environment, it can be converted to Ca(HCO3)2, with a solubility as high as 16.6 g / 100 mL, thus achieving effective removal.

[0037]

[0038] Finally, after being washed and upgraded, the coal blocks are discharged from the outlet 3 at the bottom of the washing pipe 1, resulting in dealkali-treated and upgraded coal blocks. The entire process does not require grinding the coal blocks. Moreover, since the hot flue gas discharged into the atmosphere from the power plant is used, the waste heat of the hot flue gas can be utilized. The higher the temperature, the higher the efficiency of AAEM dissolution. Thus, under the enhanced water washing effect of hot flue gas, dealkali treatment and upgrading of large-diameter coal blocks can be achieved. The operation process is simpler and the production cost is reduced.

[0039] Example 2

[0040] Please refer to Figure 2 and Figure 4 Based on Embodiment 1, in this embodiment, the plurality of baffles 6 are spirally distributed along the extending direction of the immersion tube 1. The immersion tube 1 is provided with a plurality of mounting rods 7, and the baffles 6 are fixedly sleeved on the mounting rods 7. In this embodiment, four mounting rods 7 are used and arranged in a rectangular pattern, and the distribution positions of each baffle 6 are as follows: Figure 4 As shown, from top to bottom, the first baffle 6 is installed on the two mounting rods 7 on the left, the second baffle 6 is installed on the two mounting rods 7 on the front, the third baffle 6 is installed on the two mounting rods 7 on the right, and the fourth baffle 6 is installed on the two mounting rods 7 on the back. These four baffles 6 form a cycle, and the baffles 6 are distributed in a spiral shape, with an interval of about 10cm between adjacent baffles 6.

[0041] This design allows the large-volume washing liquid and hot flue gas to form a bubble flow that rotates from bottom to top, while the coal block rotates and falls from top to bottom under the influence of gravity, bubble flow resistance, and buoyancy. This facilitates the mass transfer enhancement and disturbance of the washing liquid within the coal pores by the bubbles, thereby improving the dealkali removal and quality improvement efficiency of the coal block.

[0042] like Figure 2 and Figure 4 As shown, in some embodiments, the immersion pipe 1 is cylindrical, and the baffle 6 is semi-circular, with one arc-shaped side of the baffle 6 abutting against the inner wall of the immersion pipe 1. This facilitates the close fit between the edge of the baffle 6 and the inner wall of the immersion pipe 1, preventing gaps from forming between the arc-shaped edge of the baffle 6 and the inner wall of the immersion pipe 1, which could cause coal blocks to fall. This ensures that the coal blocks pass through each baffle 6 sequentially during their movement, thus increasing the time the coal blocks spend falling.

[0043] Example 3

[0044] Please refer to Figure 1 and Figure 2 Based on Embodiment 1, this embodiment further includes a screw conveyor 8, which is equipped with a feed hopper 9. The discharge end of the screw conveyor 8 is connected to the feed inlet 2. By incorporating the screw conveyor 8, this invention allows coal blocks to be placed in the feed hopper 9 and then sequentially transported to the feed inlet 2 via the screw conveyor 8, facilitating operation and saving manpower. Furthermore, the conveying speed of the screw conveyor 8 can be adjusted according to actual needs, thereby regulating the speed at which the coal blocks are fed into the washing pipe 1, making operation convenient.

[0045] Example 4

[0046] Please refer to Figures 1-3 Based on Embodiment 1, this embodiment further includes a filter barrel 10, which has multiple filter holes 11 and is located below the discharge port 3. It also includes a liquid collection tank 12, located below the filter barrel 10, with the filter holes 11 located inside the liquid collection tank 12. By setting up the filter barrel 10 and the liquid collection tank 12, the coal blocks, after being washed and upgraded, fall from the discharge port 3 into the filter barrel 10, where the coal blocks remain. Other liquids can flow through the filter holes 11 into the liquid collection tank 12 for temporary storage, facilitating solid-liquid separation of the coal blocks to obtain upgraded coal blocks.

[0047] like Figures 1-2 As shown, in some embodiments, the end of the immersion pipe 1 near the feed inlet 2 is connected to a return water pipe 13, and the end of the return water pipe 13 away from the immersion pipe 1 is connected to the collection tank 12. By providing the return water pipe 13, this invention allows the immersion liquid in the immersion pipe 1 to flow back into the collection tank 12 for collection when the immersion liquid level in the immersion pipe 1 is too high and reaches the position of the return water pipe 13, thus preventing excessive immersion liquid from overflowing.

[0048] Example 5

[0049] Please refer to Figures 1-2 Based on Embodiment 1, this embodiment further includes a storage tank 14 and a water pump 15. The inlet of the water pump 15 is connected to the storage tank 14, and the outlet of the water pump 15 is connected to the immersion liquid inlet pipe 4. By providing the water pump 15 and the storage tank 14, this invention allows the immersion liquid stored in the storage tank 14 to be pumped into the immersion pipe 1 through the immersion liquid inlet pipe 4 via the water pump 15, thus facilitating the upward transport of the immersion liquid to the immersion pipe 1.

[0050] In summary, the bubbling cyclone upgrading device provided in this application overcomes the technical bottleneck of traditional large-particle-size coal washing and upgrading by constructing a three-phase coupled disturbance system of "coal-water-gas".

[0051] By vertically and intermittently setting multiple baffles 6 inside the immersion tube 1, and by spirally distributing the baffles 6, a three-dimensional vortex field is formed inside the immersion tube 1, which controls the falling speed of 3-5cm coal particles to 0.2-0.5m / min (the conventional gravity settling speed is 1.2-1.5m / min), thus extending the residence time of coal particles in the immersion zone of the immersion tube 1 to 8-12min, which is more than 3 times higher than that of the traditional device, and promotes the dissolution of target elements in the coal.

[0052] Since this application uses hot flue gas discharged from the power plant into the atmosphere, a hot flue gas bubbling disturbance system can be formed. The power plant flue gas (temperature 80-120℃, CO2 concentration 8%-15%) that is about to be discharged into the atmosphere after desulfurization and denitrification is used as a dual-function medium. On the one hand, the flow of bubbles with a diameter of 20-50μm (gas content 15%-25%) generates a liquid phase turbulence intensity of 0.3-0.8m / s, which replaces the mechanical disturbance of the traditional agitator, avoids coal breakage, and reduces coal slime yield. On the other hand, the waste heat of the flue gas keeps the washing temperature at 50-70℃, which promotes the removal rate of water-soluble AAEM (alkali metal / alkaline earth metal) by 40%-60%.

[0053] In this application, CO2 in the hot flue gas forms a 0.01-0.05 mol / L carbonic acid solution (pH 5.0-6.5) in the liquid phase, creating a weakly acidic immersion environment. This allows for the removal of organic and some sparingly soluble and acid-soluble AAEMs (such as R-COONa and CaCO3), which cannot be removed by traditional water washing. Furthermore, the impact of the bubbles promotes the removal of water-insoluble chloride salts coated with silicates, achieving chloride removal.

[0054] In this specification, the terms "one embodiment," "another embodiment," "embodiment," etc., refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same term in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0055] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A bubble-cyclone upgrading device, characterized by: The device includes a washing pipe, with a feed inlet at the top and a discharge outlet at the bottom. A control valve is provided at the discharge outlet. One end of the washing pipe near the discharge outlet is connected to a washing liquid input pipe and a flue gas input pipe. Multiple baffles are spaced apart inside the washing pipe along its extension direction.

2. A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclones according to claim 1, characterized in that: The baffles are spirally distributed along the extension direction of the immersion tube.

3. A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclone according to claim 1, characterized in that: The immersion tube is cylindrical, and the baffle is semi-circular, with one arc-shaped side of the baffle abutting against the inner wall of the immersion tube.

4. A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclone according to claim 1, characterized in that: The immersion tube is provided with multiple mounting rods, and the baffle is fixedly sleeved on the mounting rods.

5. A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclone according to claim 1, characterized in that: It also includes a screw conveyor, which is equipped with a feed hopper and whose discharge end is connected to the feed inlet.

6. A device for upgrading of a hydrocarbon feedstock by bubble column hydrocyclone according to claim 1, characterized in that: It also includes a filter barrel, which has multiple filter holes and is located below the discharge port.

7. A device according to claim 6, characterised in that: It also includes a liquid collection tank, which is located below the filter tank, and the filter holes are located inside the liquid collection tank.

8. A device according to claim 7, characterised in that: The end of the immersion pipe near the feed inlet is connected to a return water pipe, and the end of the return water pipe away from the immersion pipe is connected to the collection tank.

9. A device according to claim 1, characterized in that: It also includes a storage tank and a water pump, with the water inlet of the water pump connected to the storage tank and the water outlet of the water pump connected to the immersion liquid input pipe.

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