Filtering device for regenerated gas of active coke desorption tower and regenerated gas conveying system

Abstract

The utility model relates to a filtering device for regenerated gas of an active coke desorption tower and a regenerated gas conveying system. Comprising a shell and a filter assembly arranged in the shell, the filter assembly comprises a filter screen operation roller system, a transmission filter screen wound on the filter screen operation roller system and a filter screen driving unit used for driving the filter screen operation roller system to rotate, and the filter screen operation roller system is connected to the shell. The shell is provided with a regeneration gas inlet and a regeneration gas outlet used for being connected with a regeneration gas pipeline, a regeneration gas flow channel extending from the regeneration gas inlet to the regeneration gas outlet is defined in the shell, and the transmission filter screen is arranged on the regeneration gas flow channel. The filter device is arranged at the inlet end of the regeneration gas pipeline, dust can be pre-removed before regeneration gas enters the regeneration gas pipeline, the regeneration gas pipeline is further prevented from being blocked, and the filter device is of great significance to good operation of an acid making system and a desorption tower.

Description

Technical Field

[0001] The utility model relates to the technical field of activated coke desulfurization and denitration, in particular to a filtering device for activated coke analysis tower regeneration gas and a regeneration gas conveying system. Background Art

[0002] Activated coke desulfurization and denitrification is a technology with no other by-products and is becoming more and more widely used. The analysis tower is the core equipment for regeneration after the pollutants are adsorbed. Its good operating condition is the guarantee for the stable operation of the front-end adsorption system. Therefore, ensuring that the analyzed sulfur dioxide gas can be stably transported to the back-end acid production system is the key to the operation of the entire desulfurization and denitrification system.

[0003] At present, the total amount of sulfur dioxide gas regenerated from the analytical tower is about 2000Nm 3 / h, with a nitrogen content of about 40%, a sulfur dioxide gas content of about 15%, and a dust content of about 2000mg / Nm 3 , the temperature is about 400℃, and the moisture content is about 40%. The sulfur dioxide gas is transported to the back-end acid system through a long-distance pipeline. Due to the large amount of dust and moisture in the regenerated gas, it is very easy for the dust to settle in the long-distance pipeline. Once the dust settles in the long-distance pipeline, the gas cannot be pumped to the acid system through the sulfur dioxide fan of the acid system, which in turn causes the corrosive gas in the analysis tower to accumulate in the low-temperature section. The cold end corrosion causes the corrosion of the surface heat exchange tube in the analysis tower. At the same time, due to the obstruction of the pipeline, the acid production is unbalanced with the sulfur dioxide adsorbed by the front-end desulfurization and denitrification system, resulting in an imbalance in the system adsorption. In more dangerous cases, the sulfur dioxide emissions of the outlet front-end adsorption system exceed the standard. Utility Model Content

[0004] In order to solve the above problems, on the one hand, the utility model provides a filtering device for regeneration gas of an activated coke decomposition tower, comprising a shell and a filter assembly arranged in the shell, the filter assembly comprising a filter screen running roller system, a transmission filter screen wound on the filter screen running roller system, and a filter screen driving unit for driving the filter screen running roller system to rotate, the filter screen running roller system is connected to the shell, the shell is provided with a regeneration gas inlet and a regeneration gas outlet for connecting to a regeneration gas pipeline, a regeneration gas flow channel extending from the regeneration gas inlet to the regeneration gas outlet is defined in the shell, and the transmission filter screen is arranged on the regeneration gas flow channel.

[0005] Furthermore, a partition assembly is provided in the shell and the regeneration air flow channel is defined by the partition assembly.

[0006] Furthermore, the partition assembly includes a first partition and a second partition that are arranged opposite to each other up and down, the regeneration gas inlet and the regeneration gas outlet are both located between the first partition and the second partition, and the second partition is provided with an ash discharge hole.

[0007] Furthermore, the first partition plate and the second partition plate are located between the driving rollers at both ends of the filter screen running roller system, and the first partition plate and the second partition plate are both provided with a clearance hole for the driving filter screen to pass through.

[0008] Furthermore, the mesh surface of the transmission filter is perpendicular to the gas flow direction in the regeneration gas flow channel.

[0009] Furthermore, the regeneration gas inlet and the regeneration gas outlet are provided with pressure detection units.

[0010] Furthermore, an ash hopper is provided at the bottom of the shell, and the ash hopper is located below the transmission filter.

[0011] Furthermore, the ash hopper is provided with two ash discharge valves arranged in a vertical direction, and an ash discharge area is formed between the two ash discharge valves.

[0012] Furthermore, a level meter is provided on the ash hopper.

[0013] On the other hand, the utility model also provides a regeneration gas delivery system, including a regeneration gas pipeline connected to the regeneration gas outlet of the analysis tower, the regeneration gas pipeline is provided with a filtering device, the filtering device is the filtering device as described above, and the regeneration gas pipeline is connected to the regeneration gas outlet of the shell.

[0014] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0015] 1) The utility model provides a filtering device for the regeneration gas of the activated coke analysis tower, which is arranged at the inlet end of the regeneration gas pipeline. It can perform pre-dust removal on the high-temperature, high-dust and high-water content gas regenerated in the analysis tower before entering the regeneration gas pipeline, thereby preventing the regeneration gas pipeline from being blocked, which is of great significance to the smooth operation of the acid-making system and the analysis tower.

[0016] 2) The utility model provides a filtering device for the regeneration gas of the activated coke analysis tower, which forms a regeneration gas flow channel by enclosing the first partition plate and the second partition plate, so as to ensure that the regeneration gas is filtered through the transmission filter screen, thereby improving the dust removal effect of the regeneration gas.

[0017] 3) The utility model provides a filtering device for the regeneration gas of the activated coke analysis tower, and a pressure detection unit is arranged at the regeneration gas inlet and the regeneration gas outlet. The rotation speed of the filter driving unit can be adjusted according to the difference in differential pressure to ensure smooth airflow and dust removal effect.

[0018] 4) The utility model provides a filtering device for the regeneration gas of the activated coke analysis tower, in which a level meter and two ash discharge valves are arranged in the ash hopper, and a signal interlock is established between the level meter and the ash discharge valve, so that the ash can be automatically discharged according to the material level of the ash hopper to ensure that the ash in the ash hopper is kept at a low material level. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a filtering system for regeneration gas of an activated coke analysis tower provided by the utility model.

[0021] 1-regeneration gas pipeline; 2-shell; 21-regeneration gas inlet; 22-regeneration gas outlet; 23-ash hopper; 24-regeneration gas flow channel; 25-first partition; 26-second partition; 27-ash unloading plug-in plate; 28-ash unloading valve; 29-level meter; 3-filter assembly; 31-transmission filter; 32-filter running roller system; 33-ash cleaning brush; 4-vibrator. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the drawings, the size and relative size of some parts may be enlarged for clarity.

[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connection" and "connected" should be interpreted in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "backward", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, 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 cannot be understood as a limitation on the present invention.

[0025] In addition, in the description of the present utility model, the terms "first" and "second" are only used to distinguish in the description.

[0026] Example 1

[0027] As the instruction manual Figure 1 As shown, the utility model provides a filtering device for regeneration gas of an activated coke analysis tower, comprising a housing 2 and a filtering assembly 3 arranged in the housing 2, wherein the filtering assembly 3 comprises a filter screen running roller system 32, a transmission filter screen 31 wound on the filter screen running roller system 32, and a filter screen driving unit for driving the filter screen running roller system 32 to rotate, wherein the filter screen running roller system 32 is connected to the housing 2, the housing 2 is provided with a regeneration gas inlet 21 and a regeneration gas outlet 22 for connecting to a regeneration gas pipeline 1, and a regeneration gas flow passage 24 extending from the regeneration gas inlet 21 to the regeneration gas outlet 22 is defined in the housing 2, and the transmission filter screen 31 is arranged on the regeneration gas flow passage 24. The filtering device in this embodiment is arranged at the air inlet end of the regeneration gas pipeline 1, and pre-dust removal is performed before the regeneration gas coming out of the analysis tower enters the regeneration gas pipeline for transmission, which can effectively remove dust in the regeneration gas, prevent the accumulation of activated coke dust in the regeneration gas pipeline, and ensure the stable operation of the analysis tower and the stable exhaust of the back-end acid-making system.

[0028] As one of the implementation modes, the filtering device is arranged between the analysis tower and the regeneration gas pipeline 1, the regeneration gas inlet 21 of the shell 2 is connected to the regeneration gas outlet of the analysis tower, and the regeneration gas outlet 22 of the shell is connected to the regeneration gas pipeline 1; as one of the implementation modes, the filtering device can be arranged on the regeneration gas pipeline 1, specifically, the regeneration gas pipeline 1 includes two regeneration gas pipeline units, the regeneration gas inlet 21 of the shell 2 is connected to one regeneration gas pipeline unit, and the regeneration gas outlet 22 of the shell 2 is connected to the other regeneration gas pipeline unit; through the above-mentioned settings, the regeneration gas entering the regeneration gas pipeline can be pre-dusted to reduce the impact of dust.

[0029] Preferably, the regeneration gas inlet 21 and the regeneration gas outlet 22 are connected to the regeneration gas pipeline 1, and are used to pre-dust the regeneration gas entering the shell 2. The movement path of the regeneration gas in the filtering device is that the regeneration gas enters from the regeneration gas inlet 21 and is filtered through the transmission filter 31 along the regeneration gas flow channel 24, and then moves along the regeneration gas flow channel to the regeneration gas outlet 22, so that the regeneration gas entering the shell 2 can be pre-dust-removed.

[0030] As one of the specific implementations, the filter screen running roller system 32 includes an active roller and a driven roller. The filter screen driving unit is preferably a motor. The output end of the motor is connected to the active roller to drive the active roller to rotate. The transmission filter screen 31 is tensioned on the active roller and the driven roller. The motor is started, and the motor drives the active roller to rotate, which can then drive the transmission filter screen 31 to rotate. The active roller and the driven roller are respectively arranged on the upper part and the lower part of the shell. During use, the dust carried by the regenerated gas adheres to the transmission filter screen 31, and the dust in the regenerated gas can be removed.

[0031] In an optimized implementation mode, a partition assembly is provided in the shell 2 and the regeneration air flow channel 24 is defined by the partition assembly.

[0032] In an optimized implementation mode, the partition assembly includes a first partition 25 and a second partition 26 disposed opposite to each other in upper and lower directions, the regeneration gas inlet 21 and the regeneration gas outlet 22 are both located between the first partition 25 and the second partition 26, and the second partition 26 is provided with ash discharge holes.

[0033] In an optimized implementation mode, the first partition plate 25 and the second partition plate 26 are located between the active roller and the driven roller, and both the first partition plate 25 and the second partition plate 26 are provided with a clearance hole for the transmission filter 31 to pass through, and the ash discharge hole on the second partition plate 26 can be used as a clearance hole, and the ash discharge hole and the clearance hole on the second partition plate 26 are combined into one.

[0034] Preferably, an ash hopper 23 is provided at the bottom of the shell 2. Of course, the setting position of the ash hopper 23 in the shell 2 can be set according to actual needs. In this embodiment, the flow direction of the regeneration gas is horizontal, and the ash hopper 23 is set at the bottom of the shell 2 to collect dust on the transmission filter 31; in some embodiments, the flow direction of the regeneration gas is vertical, and the ash hopper 23 is set at one end of the shell 2 in the horizontal direction to collect dust on the transmission filter 31; in some embodiments, the input direction of the regeneration gas is horizontal and the output direction is vertical. The layout of the regeneration air flow duct 24 in the shell 2 can be adjusted so that the regeneration gas is filtered through the mesh surface of the transmission filter 31, and the ash hopper 23 is set at the bottom of the shell 2 and is located at one end away from the regeneration gas inlet 22.

[0035] Preferably, in this embodiment, the flow direction of the regeneration gas is horizontal, the shell 2 is vertically arranged, the ash hopper 23 is located at the bottom of the shell 2, the regeneration gas inlet 21 and the regeneration gas outlet 22 are respectively arranged on opposite sides of the shell 2, the regeneration gas inlet 21 is arranged on the right side of the shell 2, and the regeneration gas outlet 22 is arranged on the left side of the shell 2. Preferably, the regeneration gas outlet 22 is coaxially arranged with the regeneration gas inlet 21, and the transmission filter 31 is arranged between the regeneration gas inlet 21 and the regeneration gas outlet 22, and is located on the regeneration gas flow duct 24.

[0036] Preferably, the first partition 25 and the second partition 26 are arranged in parallel along the vertical direction of the shell 2, dividing the shell 2 into the upper part, the middle part and the lower part of the shell, the regeneration airflow channel 24 is located in the middle part of the shell, the ash hopper 23 is located in the lower part of the shell, the transmission filter 31 is located on the regeneration airflow channel 24, the ash hopper 23 is located in the lower part of the shell, a cleaning brush 33 is provided on one side of the transmission filter 31, and the cleaning brush 33 is located in the lower part of the shell. The lower end of the transmission filter 31 extends into the lower part of the shell, and while ensuring that the regeneration gas passes through the transmission filter, the dust on the transmission filter 31 rotating to the lower part of the shell can fall into the ash hopper 23. When the transmission filter 31 rotates to the lower part of the shell, the cleaning brush 33 at the lower part of the shell brushes the stainless steel filter 31 to remove the dust attached to the transmission filter 31, so that the transmission filter 31 can continue to effectively remove dust, and extend the effective use time of the transmission filter. In this embodiment, the transmission filter 31 preferably rotates clockwise.

[0037] In an optimized implementation mode, the transmission filter 31 is vertically arranged, and the mesh surface of the transmission filter 31 is perpendicular to the gas flow direction in the regeneration gas flow channel 24, thereby ensuring the pre-dust removal effect of the regeneration gas.

[0038] In an optimized implementation method, the transmission filter 31 is a stainless steel filter, which is ring-shaped, and a plurality of filter holes are provided in the middle of the stainless steel filter to form a filter portion to ensure the strength of the stainless steel filter; the stainless steel filter is made of 310 high-temperature resistant stainless steel belt, and the mesh number of the steel belt is 325, which is slightly lower than the fineness of the dust in the analysis tower, and can effectively intercept the dust in the regenerated gas.

[0039] In an optimized implementation method, the regeneration gas inlet 21 and the regeneration gas outlet 22 are provided with pressure detection units, and a signal interlock is established between the filter drive unit and the pressure detection unit, so as to monitor the pressure of the regeneration gas inlet 21 and the regeneration gas outlet 22 in real time, and linearly adjust the rotation speed of the transmission filter 31 according to the pressure difference between the two, so as to ensure smooth airflow and dust removal effect.

[0040] In an optimized implementation manner, a discharge port is provided at the bottom of the ash hopper 23, and two ash discharge valves 28 arranged in a vertical direction are provided on the ash hopper 23. An ash discharge area is formed between the two ash discharge valves 28, and the ash discharge valve 28 includes an ash discharge plug-in plate 27. The two ash discharge plug-ins 27 are arranged in parallel. The ash discharge valve 28 drives the plug-in plate to switch between an open position and a closed position. When the ash discharge plug-in plate 27 is in the closed position, the ash hopper 23 is closed. When the ash hopper 23 needs to discharge ash, the ash discharge plug-in plate 27 is in the open position. In order to ensure that the ash The bucket 23 automatically cleans and discharges dust without affecting the airflow in the shell 2. During use, at least one of the dust discharge plug-ins 27 is in a closed position. During use, the upper dust discharge plug-in 27 is in an open position, and the dust falls on the lower dust discharge plug-in 27. When dust discharge is required, the upper dust discharge plug-in 27 is closed, and the lower dust discharge plug-in 27 is opened to discharge the dust in the dust discharge area. After the dust discharge is completed, the lower dust discharge plug-in 27 is closed, and the upper dust discharge plug-in 27 is opened to complete the next cycle.

[0041] In an optimized implementation method, a level meter 29 is provided on the ash hopper 23, and the level meter 29 is preferably a rotary resistance level meter, which can monitor the dust level height (including the high point and the low point of the level). The ash discharge valve 28 establishes a signal interlock with the level meter 29. When the accumulated ash in the ash hopper 23 reaches the rotary resistance sensing area, the ash is discharged according to the ash discharge method of the above-mentioned ash discharge plug plate, thereby realizing automatic cleaning and discharge.

[0042] In an optimized implementation mode, a rapper 4 is provided on the ash hopper 23, and the rapper 4 is arranged close to the bottom of the ash hopper 23, so as to improve the ash discharge effect.

[0043] Example 2

[0044] The utility model also provides a regeneration gas delivery system, comprising a regeneration gas pipeline 1 for connecting to the regeneration gas outlet of the analysis tower, wherein a filtering device is provided at the inlet end of the regeneration gas pipeline 1, and the filtering device is the filtering device described in Example 1, and the regeneration gas pipeline 1 is connected to the regeneration gas outlet 22 of the shell 2.

[0045] Preferably, the filtering device can be arranged between the analysis tower and the regeneration gas pipeline 1, or can be arranged on the regeneration gas pipeline 1 to form a pipeline filtering device, or the filtering device described in Example 1 can be installed on the existing regeneration gas pipeline 1, so that the high-temperature, high-dust and high-water content gas regenerated in the analysis tower can be pre-dusted before entering the regeneration gas pipeline, thereby preventing the regeneration gas pipeline from being blocked, which is of great significance to the smooth operation of the acid production system and the analysis tower.

[0046] Those skilled in the art will appreciate that the present invention can be implemented in many other specific forms without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been described, it should be understood that the present invention should not be limited to this embodiment, and those skilled in the art can make changes and modifications within the spirit and scope of the present invention as defined by the attached claims.

Claims

1. A filtering device for regeneration gas of an activated coke analysis tower, characterized in that: It includes a shell and a filter assembly arranged in the shell, the filter assembly includes a filter running roller system, a transmission filter wound on the filter running roller system and a filter driving unit for driving the filter running roller system to rotate, the filter running roller system is connected to the shell, the shell is provided with a regeneration gas inlet and a regeneration gas outlet for connecting to a regeneration gas pipeline, a regeneration gas flow channel extending from the regeneration gas inlet to the regeneration gas outlet is defined in the shell, and the transmission filter is arranged on the regeneration gas flow channel.

2. The filtering device for activated coke desorption tower regeneration gas according to claim 1, characterized in that: A partition assembly is disposed in the shell and the regeneration air flow channel is defined by the partition assembly.

3. The filtering device for activated coke desorption tower regeneration gas according to claim 2, characterized in that: The partition assembly comprises a first partition and a second partition arranged opposite to each other up and down, the regeneration gas inlet and the regeneration gas outlet are both located between the first partition and the second partition, and the second partition is provided with an ash discharge hole.

4. The filtering device for regeneration gas of activated coke decomposition tower according to claim 3, characterized in that: The first partition plate and the second partition plate are located between the transmission rollers at both ends of the filter screen running roller system, and the first partition plate and the second partition plate are both provided with clearance holes for the transmission filter screen to pass through.

5. The filtering device for activated coke desorption tower regeneration gas according to claim 1, characterized in that: The mesh surface of the transmission filter is perpendicular to the gas flow direction in the regeneration gas flow channel.

6. The filtering device for regeneration gas of activated coke desorption tower according to claim 1, characterized in that: The regeneration gas inlet and the regeneration gas outlet are provided with pressure detection units.

7. The filtering device for activated coke desorption tower regeneration gas according to claim 1, characterized in that: An ash hopper is provided at the bottom of the shell and is located below the transmission filter screen.

8. The filtering device for activated coke decomposition tower regeneration gas according to claim 7, characterized in that: The ash hopper is provided with two ash discharge valves arranged in a vertical direction, and an ash discharge area is formed between the two ash discharge valves.

9. The filtering device for regeneration gas of activated coke desorption tower according to claim 7, characterized in that: A material level meter is provided on the ash hopper.

10. A regeneration gas delivery system, comprising a regeneration gas pipeline connected to the regeneration gas outlet of a desorption tower, wherein a filtering device is provided on the regeneration gas pipeline, characterized in that: The filter device is the filter device according to any one of claims 1 to 9, and the regeneration gas pipeline is connected to the regeneration gas outlet of the shell.

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