Black water discharging pipeline filter device, gasification cyclone separator and gasification device

Abstract

The utility model provides a black water discharging pipeline filter device, a gasification cyclone separator and a gasification device, which comprise a conveying pipeline for controlling black water to be conveyed to a low-pressure flash evaporation system; the at least two filtering assemblies are connected to the conveying pipeline in parallel, each filtering assembly comprises a control valve group and a pipeline filter, and the two ends of each pipeline filter are communicated to the conveying pipeline through the control valve group; wherein when one pipeline filter carries out filtering work, the control valve group closes the communication between the other pipeline filters and the conveying pipeline, so that the rest pipeline filters corresponding to the closed control valve group are in a non-working state. According to the utility model, ash residues or dirt sheets in the conveying pipeline can be filtered, and the filtered ash residues or dirt sheets can be cleaned on the premise of no shutdown.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverized coal gasification, in particular to a black water discharge pipeline filter device, a gasification cyclone separator and a gasification device. Background Art

[0002] Gasification units often use a full heat recovery type coal gasification process, namely "pulverized coal gasification + radiation waste boiler + cyclone + steam superheating + water washing" process. The cyclone separation system is mainly composed of primary and secondary cyclone separators. Each stage of cyclone separators has two units, which operate in parallel.

[0003] During the operation of the gasifier, the black water discharge pipelines of the first and second cyclone separators are prone to blockage to varying degrees. When the blockage is the most serious, the blockage of the black water discharge pipeline of the cyclone separator will force the gasifier to stop. In addition, if the frequency is high, the load of the gasifier will increase. Frequent blockage of the black water discharge pipeline of the cyclone separator will also cause the gasifier to be unable to increase the water circulation volume of the system during operation, resulting in poor system water quality, difficulty in unloading the filter press system, frequent disassembly and inspection of the black water angle valve and flow meter, etc., which seriously increases the load of the gasifier and the stable operation of the black water system. At the same time, every time the black water discharge pipeline is blocked, the black water angle valve and black water pipeline flow meter need to be disassembled and inspected, and they need to be checked and unblocked one by one, which increases the frequency and risk of maintenance. If the isolation maintenance time is long, it is easy to cause the black water discharge pipeline at the bottom of the cyclone separator to be blocked and cannot be put into use again. The black water discharge pipeline on the side of the cyclone separator can only be temporarily put into use, which increases the workload of cleaning the inside of the cyclone separator during shutdown maintenance and affects the on-site environmental sanitation. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide a black water discharge pipeline filter device, a gasification cyclone separator and a gasification device, which are used to solve the problem of different degrees of blockage of the black water discharge pipeline of the cyclone separator during the start-up of the gasifier in the prior art, and when the blockage is serious, the gasifier is forced to stop for maintenance, which increases the load of the gasifier. Moreover, when the maintenance is frequent, it will affect the operating stability of the gasifier. If the isolation maintenance time is long, it is also easy to cause the black water discharge pipeline at the bottom of the cyclone separator to be blocked and cannot be put into use again. Only the black water discharge pipeline on the side of the cyclone separator can be put into use, which increases the workload of cleaning the inside of the cyclone separator when stopping for maintenance.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a black water discharge pipeline filter device, comprising: a delivery pipeline, the delivery pipeline controls the delivery of black water to a low-pressure flash evaporation system; and a filter assembly, at least two filter assemblies are connected in parallel on the delivery pipeline, the filter assembly comprises a control valve group and a pipeline filter, and both ends of the pipeline filter are connected to the delivery pipeline through the control valve group; wherein, when one pipeline filter performs filtering work, the control valve group closes the connection between other pipeline filters and the delivery pipeline, so that the remaining pipeline filters corresponding to the closed control valve group are in a non-working state.

[0006] In one embodiment of the utility model, the filter device also includes: a cut-off valve, which is installed on the delivery pipeline corresponding to the output end of the filter component; and a first shower valve, which is installed on the delivery pipeline between the filter component and the cut-off valve.

[0007] In one embodiment of the present invention, the filter assembly further includes: a main line, on which a pipeline filter and its corresponding control valve group are installed; and a spare pipeline, on which another pipeline filter and its corresponding control valve group are installed.

[0008] In one embodiment of the utility model, the control valve group includes: a front hand valve, the output end of the front hand valve is connected to the input end of the pipeline filter; a rear hand valve, the input end of the rear hand valve is connected to the output end of the pipeline filter; and a second shower valve, the second shower valve is installed between the pipeline filter and the rear hand valve.

[0009] In one embodiment of the present invention, the pipeline filter is detachably mounted on a pipeline corresponding to the control valve assembly, wherein the pipeline includes a main pipeline and a spare pipeline.

[0010] In one embodiment of the utility model, the pipeline filter is a pointed-top pipeline filter, the mesh aperture size of the pointed-top pipeline filter is 4 mm, and the filtering particle size is 5 meshes.

[0011] In one embodiment of the utility model, the pipeline filter includes: a flange plate, a flange surface of the flange plate is provided with a sealing surface boss; a filter body, the filter body is conical in shape, and a plurality of filter mesh holes are evenly provided on the surface of the filter body; and a side support plate, which is connected to one side of the flange plate.

[0012] The utility model also provides a gasification cyclone separator, including the aforementioned black water discharge pipeline filter device, and also includes: a cyclone separation body, the output end of the cyclone separation body is connected to the conveying pipeline corresponding to the input end of the filter component.

[0013] In one embodiment of the utility model, the filter device also includes: a first root hand valve, the input end of the first root hand valve is connected to a side close to the filter body; and a second root hand valve, the output end of the second root hand valve is connected to a side close to the delivery pipeline, and the output end of the first root hand valve is connected to the input end of the second root hand valve.

[0014] The utility model further provides a gasification device, comprising a primary cyclone separator and a secondary cyclone separator, wherein the primary cyclone separator and the secondary cyclone separator respectively comprise the aforementioned gasification cyclone separator.

[0015] Beneficial effects of the utility model: The utility model proposes a black water pipeline filter device, a gasification cyclone separator and a gasification device. The filter device, the gasification cyclone separator and the gasification device can be easily used to intercept larger particles of ash or scale in the pipeline by using the main line and the spare line on the conveying pipeline. In the early stage of operation, due to changes in temperature and water volume, ash or scale easily falls off and blocks the pipeline. When the pipeline filter is normally put into use and it is found that the black water discharge flow at the bottom of the cyclone separator decreases, the pipeline filter that discharges black water at the bottom is isolated by switching the pipeline filter and the corresponding pipeline filter is cleaned, thereby ensuring the continuous and stable operation of the entire black water system. Specifically, the corresponding pipeline is isolated and cut off by the front hand valve and the rear hand valve, and the pipeline filter is inspected and cleaned after the second shower valve is used to release pressure and drain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the cyclone separator of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the pipeline filter of the utility model.

[0018] Figure 3 It is a top view of the pipeline filter of the utility model.

[0019] Figure 4 Shown is a schematic diagram of the arrangement of the filter mesh holes of the utility model.

[0020] Component number description

[0021] Delivery pipeline 1; filter assembly 2; cut-off valve 3; first drain valve 4; cyclone separation body 5; first root hand valve 6; second root hand valve 7; control valve group 21; pipeline filter 22; main line 23; spare pipeline 24; front hand valve 211; rear hand valve 212; second drain valve 213; flange 221; filter body 222; side support plate 223; filter mesh 2221. DETAILED DESCRIPTION

[0022] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0024] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0025] See also Figure 1 The utility model provides a black water pipeline filter device, comprising: a delivery pipeline 1, the delivery pipeline 1 controls the delivery of black water to a low-pressure flash evaporation system; and a filter assembly 2, at least two filter assemblies 2 are connected in parallel to the delivery pipeline 1, the filter assembly 2 comprises a control valve group 21 and a pipeline filter 22, and both ends of the pipeline filter 22 are connected to the delivery pipeline 1 through the control valve group 21; wherein, when one pipeline filter 22 performs filtering work, the control valve group 21 closes the connection between other pipeline filters 22 and the delivery pipeline 1, so that the remaining pipeline filters 22 corresponding to the closed control valve group 21 are in a non-working state.

[0026] It is not difficult to find from the above content that when the black water discharge pipeline filter device of the utility model is used, the black water after passing through the cyclone separator will be sent to the low-pressure flash system through the conveying pipeline 1. Specifically, coal gasification black water is a kind of water containing a large amount of suspended matter, solid particles and gasification residual carbon produced in the coal gasification process. During the transportation process of the conveying pipeline 1, multiple filter components 2 are connected in parallel on the conveying pipeline 1, so that when in use, only one of the filter components 2 in parallel needs to be used to filter the black water. When it is found that the black water discharge flow at the bottom of the cyclone separator decreases, other filter components 2 are switched for use. At the same time, the filter component 2 currently in use is closed to clean the filter component 2 while ensuring the uninterrupted stable operation of the entire black water system. Specifically, when the filter component 2 is closed, the control valve group 21 on the input end side of the pipeline filter 22 and the control valve group 21 on the output end side of the pipeline filter 22 are controlled to close, so that the black water can not pass through the pipeline filter 22. When the control valve group 21 corresponding to the other pipeline filter 22 is opened, the black water will be filtered through the corresponding other pipeline filter 22 to ensure the stable operation of the black water system without stopping. Through the above method, not only can the uninterrupted stable operation of the entire black water system be achieved, but also the interception of larger particles of ash or scale can be achieved, which solves the problem of ash or scale falling off and clogging the pipeline due to changes in temperature and water volume in the early stage of operation. Among them, the low-pressure flash evaporation system realizes the evaporation and flashing of black water by controlling factors such as the temperature, pressure and stirring intensity inside the flash tank. This part is the existing technology and will not be elaborated here.

[0027] like Figure 1 As shown, the filter device further includes: a cut-off valve 3, which is installed on the delivery pipeline 1 corresponding to the output end of the filter assembly 2; and a first drain valve 4, which is installed on the delivery pipeline 1 between the filter assembly 2 and the cut-off valve 3. In this embodiment, when the delivery pipeline 1 delivers black water to the low-pressure flash evaporation system, the cut-off valve 3 can be used to shut off the black water delivered to the low-pressure flash evaporation system, and the black water in the delivery pipeline 1 can be emptied through the first drain valve 4.

[0028] Furthermore, the filter assembly 2 also includes: a main line 23, a pipeline filter 22 and its corresponding control valve group 21 are installed on the main line 23; a spare pipeline 24, another pipeline filter 22 and its corresponding control valve group 21 are installed on the spare pipeline 24.

[0029] In one embodiment of the utility model, when there are two filter assemblies 2, in the process of filtering the black water in the delivery pipeline 1 and cleaning the ash or scale flakes, the filter assembly 2 respectively installs the pipeline filter 22 and the corresponding control valve group 21 through the provided main line 23 and the spare line 24. The main line 23 can be a pipeline integrated with the delivery pipeline 1. The spare line 24 can be a pipeline connected in parallel to one side of the main line 23 and connected to the delivery pipeline 1. For example, when the main line 23 first transports the black water in the delivery pipeline 1 to the low-pressure flash system, if it is found that the black water flow rate at the bottom of the cyclone separator decreases, the control valve group 21 corresponding to the input and output ends of the pipeline filter 22 on the main line 23 is turned off, and the control valve group 21 corresponding to the input and output ends of the pipeline filter 22 on the spare line 24 is opened, thereby realizing the cleaning of the pipeline filter 22 on the main line 23.

[0030] Specifically, the control valve group 21 includes: a front hand valve 211, the output end of the front hand valve 211 is connected to the input end of the pipeline filter 22; a rear hand valve 212, the input end of the rear hand valve 212 is connected to the output end of the pipeline filter 22; and a second shower valve 213, the second shower valve 213 is installed between the pipeline filter 22 and the rear hand valve 212.

[0031] In one embodiment of the utility model, when the control valve group 21 closes the input end and the output end of the pipeline filter 22, the connection of the black water to the input end of the pipeline filter 22 can be closed through the front hand valve 211, and the connection of the black water to the output end of the pipeline filter 22 can be closed through the rear hand valve 212. In addition, the corresponding main line 23 or spare line 24 can be emptied through the second drain valve 213.

[0032] Furthermore, the pipeline filter 22 can be detachably installed on the pipeline corresponding to the control valve group 21, wherein the pipeline includes: a main line 23 and a spare line 24. That is to say, when the pipeline filter 22 is filtering the main line 23 or the spare line 24, the ash or scale in the pipeline will be filtered through the pipeline filter 22, and the filtered ash or scale will be collected in the pipeline filter 22. When the control valve group 21 corresponding to the input and output ends of the pipeline filter 22 is turned off, the pipeline filter 22 can be disassembled from the corresponding main line 23 or the spare line 24 to clean the ash or scale collected in the pipeline filter 22.

[0033] Preferably, the pipe filter 22 is a pointed pipe filter, the mesh size of the pointed pipe filter is 4 mm, and the filter particle size is 5 mesh. Specifically, the model of the pointed pipe filter can be CL600, the mesh size is 4 mm, the filter particle size is 5 mesh, RF, and it is a filter element made of 304 stainless steel. Among them, RF refers to the flange surface of the pointed pipe filter is provided with a sealing surface boss.

[0034] like Figure 2-4 As shown, the utility model also provides a pipeline filter 22 of a preferred embodiment. The pipeline filter 22 includes: a flange 221, the flange surface of the flange 221 is provided with a sealing surface boss; a filter body 222, the filter body 222 is conical, and the surface of the filter body 222 is evenly provided with a plurality of filter mesh holes 2221; and a side support plate 223, the side support plate 223 is connected to one side of the flange 221.

[0035] In an embodiment of the utility model, when the pipeline filter 22 is installed on the main line 23 or the spare line 24, a mounting flange is provided at one end of the main line 23 or the spare line 24 corresponding to the pipeline filter 22. By installing the filter body 222 into the pipeline corresponding to the mounting flange, the flange 221 is clamped between the two mounting flanges, so that the flange 221 is installed and fixed by utilizing the connection between the two mounting flanges, thereby installing the pipeline filter 22. Specifically, the filter body 222 can be in the shape of a cone or a frustum.

[0036] like Figure 1 As shown, the utility model also provides a gasification cyclone separator, including the aforementioned black water discharge pipeline filter device, and also includes: a cyclone separation body 5, the output end of the cyclone separation body 5 is connected to the conveying pipeline 1 corresponding to the input end of the filter component 2.

[0037] In one embodiment of the utility model, after the cyclone separation body 5 is processed, the black water is discharged to the delivery pipeline 1 through its output end. After the large particles of ash or scale are filtered through the filter assembly 2 through the delivery pipeline 1, it is then delivered to the low-pressure flash evaporation system.

[0038] Furthermore, the filter device further comprises: a first root hand valve 6, the input end of which is connected to a side close to the filter body 222; and a second root hand valve 7, the output end of which is connected to a side close to the delivery pipeline 1, and the output end of the first root hand valve 6 is connected to the input end of the second root hand valve 7. In this embodiment, when the delivery pipeline 1 is closed, the black water can be discharged into the low-pressure flash system by opening the first root hand valve 6 and the second root hand valve 7 and using the black water discharge pipeline on the side of the cyclone separator.

[0039] The utility model further provides a gasification device, comprising a primary cyclone separator and a secondary cyclone separator, wherein the primary cyclone separator and the secondary cyclone separator respectively comprise the aforementioned gasification cyclone separator.

[0040] In one embodiment of the utility model, during the start-up process of the gasification device, it needs to pass through two stages of cyclone separators, namely, a primary cyclone separator and a secondary cyclone separator. Each stage of cyclone separators can be two, and they are operated in parallel. Moreover, when the primary cyclone separator and the secondary cyclone separator are filtering, the pipeline filter 22 and the control valve group 21 in the gasification cyclone separator are used to filter and clean the large particles of ash or scale in the pipeline.

[0041] In summary, the utility model can filter the large ash or scale particles in the pipeline by designing the main line 23 and the spare line 24 on the conveying pipeline 1, and respectively install the control valve group 21 and the pipeline filter 22 through the main line 23 and the spare line 24, and can also realize the uninterrupted stable operation of the entire black water system. At the same time, when it is detected that the flow rate of the cyclone separator to the conveying pipeline 1 is reduced, the control valve group 21 corresponding to the pipeline filter 22 is controlled to be closed, the pipeline filter 22 is disassembled and cleaned, and the pipeline filter 22 of other spare lines is switched to continuously supply the filtered black water to the low-pressure flash system. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A black water discharge pipeline filter device, characterized in that: include: A delivery pipeline (1), wherein the delivery pipeline (1) controls the delivery of black water to a low-pressure flash distillation system; as well as A filter assembly (2), at least two of the filter assemblies (2) are connected in parallel on the delivery pipeline (1), the filter assembly (2) comprises a control valve group (21) and a pipeline filter (22), and both ends of the pipeline filter (22) are connected to the delivery pipeline (1) through the control valve group (21); When one of the pipeline filters (22) performs filtering operation, the control valve group (21) closes the connection between the other pipeline filters (22) and the delivery pipeline (1), so that the remaining pipeline filters (22) corresponding to the closed control valve group (21) are in a non-working state.

2. The black water discharge line filter device according to claim 1, characterized in that: The filter device also includes: a cut-off valve (3), the cut-off valve (3) being installed on the delivery pipeline (1) corresponding to the output end of the filter assembly (2); and A first shower valve (4), the first shower valve (4) being installed on the delivery pipeline (1) between the filter assembly (2) and the cut-off valve (3).

3. The black water drainage line filter device according to claim 1, characterized in that: The filter assembly (2) further comprises: A main line (23), a pipeline filter (22) and its corresponding control valve group (21) are installed on the main line (23); A spare pipeline (24), another pipeline filter (22) and its corresponding control valve group (21) are installed on the spare pipeline (24).

4. The black water drainage line filter device according to claim 3, characterized in that: The control valve group (21) comprises: A front hand valve (211), the output end of the front hand valve (211) being connected to the input end of the pipeline filter (22); a rear hand valve (212), the input end of the rear hand valve (212) being connected to the output end of the pipeline filter (22); and A second shower guide valve (213), wherein the second shower guide valve (213) is installed between the pipeline filter (22) and the rear hand valve (212).

5. The black water drainage line filter device according to claim 3, characterized in that: The pipeline filter (22) is detachably mounted on a pipeline corresponding to the control valve group (21), wherein the pipeline comprises a main pipeline (23) and a spare pipeline (24).

6. The black water drainage line filter device according to claim 5, characterized in that: The pipeline filter (22) is a pointed-top pipeline filter, the mesh aperture size of the pointed-top pipeline filter is 4 mm, and the filtering particle size is 5 meshes.

7. The black water drainage line filter device according to claim 5, characterized in that: The pipeline filter (22) comprises: A flange (221), wherein a flange surface of the flange (221) is provided with a sealing surface boss; A filter body (222), wherein the filter body (222) is in a cone shape, and a plurality of filter mesh holes (2221) are evenly arranged on the surface of the filter body (222); and A side support plate (223), wherein the side support plate (223) is connected to one side of the flange (221).

8. A gasification cyclone separator, characterized in that: It comprises the black water discharge pipeline filter device as described in any one of claims 1 to 7, and also comprises: a cyclone separation body (5), the output end of the cyclone separation body (5) is connected to the conveying pipeline (1) corresponding to the input end of the filter component (2).

9. The gasification cyclone separator according to claim 8, characterized in that: The filter device also includes: A first root hand valve (6), wherein an input end of the first root hand valve (6) is connected to a side close to the filter body (222); and A second root hand valve (7), the output end of the second root hand valve (7) is connected to a side close to the delivery pipeline (1), and the output end of the first root hand valve (6) is connected to the input end of the second root hand valve (7).

10. A gasification device, characterized in that: It comprises a primary cyclone separator and a secondary cyclone separator, wherein the primary cyclone separator and the secondary cyclone separator respectively comprise the gasification cyclone separator according to claim 8.

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