Ammonia water filtering device

Abstract

The invention relates to the technical field of coking equipment, in particular to an ammonia water filtering device. Comprising an ammonia water inlet pipeline, an inlet branch pipe, a filter, a cleaning pipeline, an outlet branch pipe and an ammonia water outlet pipeline, one end of the inlet branch pipe is communicated with the ammonia water inlet pipeline, and the other end is communicated with the filter; one end of the outlet branch pipe is communicated with the filter, and the other end is communicated with the ammonia water outlet pipeline; one end of the cleaning pipeline is communicated with the ammonia water inlet pipeline, and the other end is communicated with the filter. The ammonia water is filtered, so that impurities in the ammonia water are effectively prevented from blocking the ammonia water nozzle.

Description

Technical Field

[0001] The present invention relates to the technical field of coking equipment, and particularly relates to an ammonia water filtering device. Background Art

[0002] The coke oven gas collecting system includes riser pipes, bridge pipes, and collecting pipes, etc. The riser pipes at the top of the coke oven are connected to the collecting pipe through the bridge pipes, and the raw gas generated by the coke oven is cooled and introduced into the collecting pipe. In the bridge pipe, low-pressure ammonia water is sprayed on the raw gas from the riser pipe to cool its temperature from 600 - 650 °C to below 100 °C, and at the same time, a part of the tar and ammonia water are condensed.

[0003] The ammonia water system is the key to the stable operation of the coke oven. Since there are impurities such as tar in the ammonia water, it is easy to block the ammonia water nozzles. Although anti-blocking nozzles have been developed at present and they do play a role in preventing blockage at the initial stage of equipment operation, however, blockage still occurs after running for a period of time, affecting the production of the coke oven. Summary of the Invention

[0004] To overcome the deficiencies of the above-mentioned prior art, the present invention provides an ammonia water filtering device to filter the ammonia water and effectively prevent the impurities in the ammonia water from blocking the ammonia water nozzles.

[0005] To achieve the above purpose, the present invention is realized by adopting the following technical solutions:

[0006] An ammonia water filtering device includes an ammonia water inlet pipe, an inlet branch pipe, a filter, a cleaning pipe, an outlet branch pipe, and an ammonia water outlet pipe; one end of the inlet branch pipe is communicated with the ammonia water inlet pipe, and the other end is communicated with the filter; one end of the outlet branch pipe is communicated with the filter, and the other end is communicated with the ammonia water outlet pipe; one end of the cleaning pipe is communicated with the ammonia water inlet pipe, and the other end is communicated with the filter.

[0007] Further, a cleaning valve is provided on the cleaning pipe.

[0008] Further, an inlet pipe valve is provided on the inlet branch pipe, and an outlet pipe valve is provided on the outlet branch pipe.

[0009] Further, the filter includes an outer cylinder and a support cylinder arranged inside the outer cylinder. The side wall of the support cylinder is provided with openings, and a filter screen is fixedly connected to the outer wall; one end of the support cylinder is communicated with the inlet branch pipe, the outer cylinder is communicated with the cleaning pipe, and the outer cylinder is communicated with the outlet branch pipe.

[0010] Further, one end of the outer cylinder is a tapered section, a gasket is fixedly connected inside the tapered section, the inlet branch pipe extends into the support cylinder, and the gasket is located at the connection between the inlet branch pipe and the support cylinder to play a sealing role.

[0011] Further, the support cylinder and the outer cylinder are connected by a flange.

[0012] Further, the other end of the support cylinder is connected to the outlet pipe.

[0013] Further, pressure gauges are provided on both the inlet branch pipe and the outlet branch pipe.

[0014] Further, there are two filters, one in use and one in reserve.

[0015] Further, when the filter is working, the cleaning pipeline is closed; if the pressure of the inlet branch pipe and the outlet branch pipe is greater than the set value, the inlet branch pipe and the outlet branch pipe are closed, and the cleaning pipeline is opened to clean the filter.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1) In the present invention, the ammonia water inlet pipeline and the ammonia water outlet pipeline are connected to the filter through the inlet branch pipe and the outlet branch pipe. The ammonia water is filtered by the filter to filter out impurities such as tar in the ammonia water, avoiding clogging of the nozzle and ensuring the stable and smooth progress of the coke oven production. At the same time, a cleaning pipeline is provided, which can clean the filter, significantly extend its filtration cycle and restore its filtration quality.

[0018] 2) Pressure gauges are provided on both the inlet branch pipe and the outlet branch pipe of the present invention, which can timely detect the clogging condition of the filter.

[0019] 3) The present invention adopts the form of one in use and one in reserve, and the filter is adjusted and cleaned in time through the valve to ensure the stable operation of the ammonia water system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention.

[0021] Figure 2 is Figure 1 the A-A cross-sectional view of

[0022] Figure 3 is a schematic diagram of a circular hole opened on the side wall of the support cylinder of the present invention.

[0023] Figure 4 is a schematic diagram of a long strip hole opened on the side wall of the support cylinder of the present invention.

[0024] In the figure: 1. Ammonia water inlet pipeline; 2. Cleaning valve; 3. Cleaning pipeline; 4. Filter; 5. Inlet pipeline valve; 6. Inlet branch pipe; 7. Outlet pipeline valve; 8. Outlet branch pipe; 9. Ammonia water outlet pipeline; 10. Pressure gauge; 41. Conical section; 42. Gasket; 43. Outer cylinder; 44. Flange; 45. Filter screen; 46. Support cylinder; 47. Conical pipe; 48. Outlet pipe valve; 49. Outlet pipe. DETAILED DESCRIPTION OF THE INVENTION

[0025] Embodiments of the present invention will be described in detail below. To make the objectives, 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 below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 thus should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] 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 "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0029] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: Similar reference numerals and letters denote 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.

[0030] 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. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the scope of protection of the present invention.

[0031] As Figures 1-4 shown, an ammonia water filtering device includes an ammonia water inlet pipe 1, an inlet branch pipe 6, a filter 4, a cleaning pipe 3, an outlet branch pipe 8, and an ammonia water outlet pipe 9.

[0032] In this embodiment, there are two filters 4, symmetrically arranged on both sides of the ammonia water inlet pipe 1. The ammonia water inlet pipe 1 is divided into two symmetric inlet branch pipes 6, which are respectively connected to the two filters 4, and the two symmetric outlet branch pipes 6 converge into an ammonia water outlet pipe 9.

[0033] One end of the inlet branch pipe 6 is communicated with the ammonia water inlet pipe 1, and the other end is communicated with the filter 4. One end of the outlet branch pipe 8 is communicated with the filter 4, and the other end is communicated with the ammonia water outlet pipe 9. One end of the cleaning pipe 3 is communicated with the ammonia water inlet pipe 1, and the other end is communicated with the filter 4.

[0034] A cleaning valve 2 is provided on the cleaning pipe 3. An inlet pipe valve 5 is provided on the inlet branch pipe 6, and an outlet pipe valve 7 is provided on the outlet branch pipe 8.

[0035] As Figure 2 shown, the filter 4 includes an outer cylinder 43 and a support cylinder 46 arranged inside the outer cylinder. Both the support cylinder 46 and the outer cylinder 43 are cylinders, with their axes vertical and the same.

[0036] The top end of the outer cylinder 43 is a conical section 41. The inner diameter of the support cylinder 46 is slightly larger than the outer diameter of the inlet branch pipe 6, and the bottom end of the inlet branch pipe 6 extends into the top of the support cylinder 46. A gasket 42 is fixedly connected to the inner wall of the conical section 41, located at the top of the support cylinder 46 and at the connection between the inlet branch pipe 6 and the support cylinder 46, playing a sealing role.

[0037] The cleaning pipeline 3 is communicated with the left side wall of the outer cylinder 43, and the outlet branch pipe 9 is communicated with the right side wall of the outer cylinder 43. Pressure gauges 10 are provided at both the inlet branch pipe 6 and the outlet branch pipe 9 near the filter 4.

[0038] Flanges 44 are provided at the bottom end surfaces of both the outer cylinder 43 and the support cylinder 46, and the outer cylinder 43 and the bottom of the support cylinder 46 are connected through the flanges 44.

[0039] The bottom of the support cylinder 46 is connected to the outlet pipe 49 through a tapered pipe 47, and an outlet pipe valve 48 is provided on the outlet pipe 49.

[0040] Such as Figure 3 、 Figure 4 shown, the side wall of the support cylinder 46 is provided with openings, which are circular holes or elongated holes.

[0041] A filter net 45 is fixedly connected to the outer wall of the side wall of the support cylinder 46.

[0042] There are two filters 4, one in use and one in reserve. The reserve is realized by closing the cleaning pipeline valve 2, the inlet pipeline valve 5, and the outlet pipeline valve 7 on the same side.

[0043] The working principle and process of the present invention are as follows:

[0044] When the filter 4 operates, close the cleaning valve 2, the inlet pipeline valve 5, and the outlet pipeline valve 7 on the opposite side, close the cleaning valve 2 on the same side, open the inlet pipeline valve 5 and the outlet pipeline valve 7 on the same side, and introduce ammonia water to realize the filtering function.

[0045] When the pressure difference detected by the pressure gauge 10 is too large, open the inlet pipeline valve 5 and the outlet pipeline valve 7 on the opposite side, close the inlet pipeline valve 5 and the outlet pipeline valve 7 of the pipeline on the same side, open the cleaning valve 2 on the same side for cleaning, and at the same time open the outlet pipe valve 48 to send the cleaning ammonia water together with impurities to the tank area for purification, realizing continuous filtering of ammonia water.

[0046] The present invention filters ammonia water through the filter 4, filters out impurities such as tar existing in the ammonia water, avoids blocking the nozzles, and ensures the stable and smooth progress of coke oven production. At the same time, a cleaning pipeline 3 is provided, which can clean the filter 4, can significantly extend its filtering cycle, and restore its filtering quality.

[0047] The above is only a partial specific implementation manner of the present invention, and the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An ammonia water filtering device, characterized in that: It includes an ammonia water inlet pipe, an inlet branch pipe, a filter, a cleaning pipe, an outlet branch pipe and an ammonia water outlet pipe; One end of the inlet branch pipe is connected to the ammonia water inlet pipe, and the other end is connected to the filter; One end of the outlet branch pipe is connected to the filter, and the other end is connected to the ammonia outlet pipe; One end of the cleaning pipeline is connected to the ammonia water inlet pipeline, and the other end is connected to the filter.

2. The ammonia water filtering device according to claim 1, characterized in that: The cleaning pipeline is provided with a cleaning valve.

3. The ammonia water filtering device according to claim 1, characterized in that: The inlet branch pipe is provided with an inlet pipeline valve, and the outlet branch pipe is provided with an outlet pipeline valve.

4. The ammonia water filtering device according to claim 1, characterized in that: The filter comprises an outer cylinder and a support cylinder arranged in the outer cylinder, the side wall of the support cylinder is opened, and the outer wall is fixedly connected to the filter screen; One end of the support tube is communicated with the inlet branch pipe, the outer tube is communicated with the cleaning pipeline, and the outer tube is communicated with the outlet branch pipe.

5. The ammonia water filtering device according to claim 4, characterized in that: One end of the outer cylinder is a cone section, a gasket is fixed in the cone section, the branch inlet pipe extends into the support cylinder, and the gasket is located at the connection between the branch inlet pipe and the support cylinder to play a sealing role.

6. The ammonia water filtering device according to claim 4, characterized in that: The support cylinder is connected to the outer cylinder via a flange.

7. The ammonia water filtering device according to claim 4, characterized in that: The other end of the support tube is connected to the outlet pipe.

8. The ammonia water filtering device according to claim 4, characterized in that: The inlet branch pipe and the outlet branch pipe are both provided with pressure gauges.

9. The ammonia water filtering device according to claim 1, characterized in that: There are two filters, one for operation and one for standby.

10. The ammonia water filtering device according to claim 1, characterized in that: When the filter is working, the cleaning pipeline is closed; if the pressure of the inlet branch pipe and the outlet branch pipe is greater than the set value, the inlet branch pipe and the outlet branch pipe are closed, and the cleaning pipeline is opened to clean the filter.

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