Gas condensate discharging device and using method thereof

Abstract

The invention relates to the technical field of liquid discharge in the coking industry, in particular to a gas condensate discharge device and a using method thereof. Comprising a first condensate pipeline, a second condensate pipeline, an expansion pipe and a liquid seal tank, the first condensate pipeline is vertically arranged and is fixedly connected to the bottom of the horizontally arranged gas pipeline; the expansion pipe is fixedly connected to the bottom of the first condensate pipeline, and the end part of the expansion pipe is closed; one end of the second condensate pipeline is vertically and fixedly connected to the first condensate pipeline, a filter screen is arranged at the communication part, and the other end of the second condensate pipeline extends into the liquid seal groove; and the liquid seal tank is provided with a full flow port which is connected with an emptying system pipeline. Cleaning frequency is reduced, labor cost is saved, and downstream equipment and pipelines are prevented from being blocked.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage in the coking industry, and particularly to a gas condensate discharge device and a using method thereof. Background Art

[0002] The coke oven gas condensate contains a large amount of impurities such as tar, naphthalene, coal powder, and coal cinder, which are extremely likely to adhere to the liquid discharge port, the inner wall of the pipeline, and the water seal tank. Especially for the previous units of gas purification, since the unpurified condensate contains more impurities, it is easier to accumulate, resulting in blockage of equipment and pipelines, an increase in resistance, poor liquid discharge leading to liquid accumulation, and affecting gas transmission.

[0003] The traditional gas drainage device has mature technology. The common practice is to set two valves in the condensate pipeline and set steam purging in the middle of the valves. This method has two problems:

[0004] 1) It does not have a visualization function and can only judge the blockage situation of pipelines and equipment based on experience. To ensure the normal operation of the system, it is necessary to frequently purge and clean with steam, wasting manpower.

[0005] 2) The impurities after purging return to the system and still block the downstream equipment and pipelines. Summary of the Invention

[0006] To overcome the deficiencies of the above-mentioned prior art, the present invention provides a gas condensate discharge device and a using method thereof, reducing the cleaning frequency and avoiding blocking the downstream equipment and pipelines.

[0007] To achieve the above object, the present invention is realized by adopting the following technical solutions:

[0008] A gas condensate discharge device includes a first condensate pipeline, a second condensate pipeline, an expansion pipe, and a liquid seal tank; the first condensate pipeline is vertically arranged and fixedly connected to the bottom of a horizontally arranged gas pipeline; the expansion pipe is fixedly connected to the bottom of the first condensate pipeline, and the end of the expansion pipe is closed; one end of the second condensate pipeline is vertically and fixedly connected to the first condensate pipeline, and a filter screen is provided at the connection, and the other end extends into the liquid seal tank; the liquid seal tank is provided with an overflow port connected to the emptying system pipeline.

[0009] Furthermore, it further includes a drainage funnel. The drainage funnel is a geometric body with a wide top and a narrow bottom. The top of the drainage funnel is fixedly connected to the bottom of the gas pipeline, and the bottom is connected to the first condensate pipeline.

[0010] Furthermore, the first condensate pipeline is provided with a first valve, and the second condensate pipeline is provided with a second valve and a steam valve, and the steam valve is connected to a steam pipeline.

[0011] Further, the diameter of the enlarged pipe is larger than that of the first condensate pipeline, and the enlarged pipe is connected to the first condensate pipeline through a reducing pipe; a blind plate is provided at the bottom end of the enlarged pipe.

[0012] Further, an observation pipe is also included, and the observation pipe is fixedly connected to the first condensate pipeline obliquely upward.

[0013] Further, a sight glass with a lamp is provided on the observation pipe.

[0014] Further, a third valve is provided on the observation pipe.

[0015] Further, the third valve adopts a knife gate valve.

[0016] Further, 8-shaped blind plates are provided on the first valve, the second valve and the third valve.

[0017] A usage method of a gas condensate discharge device specifically includes the following steps:

[0018] 1) The condensate of the gas pipeline flows into the first condensate pipeline through the drain funnel, the impurities in the condensate are separated from the filter screen, enter the enlarged pipe through the reducing pipe, and the enlarged pipe stores the impurities;

[0019] 2) After the condensate passes through the filter screen to remove impurities, it flows into the liquid seal tank and then is sent to the venting system through the overflow port;

[0020] 3) Observe the accumulation of impurities in the enlarged pipe through the sight glass with a lamp and clean them in the following three ways:

[0021] ① Close the first valve, open the steam valve, and introduce steam into the first and second condensate pipelines; clean the first and second condensate pipelines between the first valve and the liquid seal tank, and back purge the filter screen;

[0022] Then open the first valve, close the second valve, and clean the first and second condensate pipelines from the drain funnel to the second valve in the reverse direction;

[0023] ② Close the first valve, close the second valve, adjust the 8-shaped blind plate of the first valve to the closed state to avoid gas leakage, then open the steam valve, introduce steam into the first and second condensate pipelines, after the impurities are softened, close the steam valve, open the blind plate of the enlarged pipe, and discharge the impurities;

[0024] At this time, clean the first and second condensate pipelines between the first valve and the second valve, as well as the reducing pipe and the enlarged pipe part, and back purge the filter screen;

[0025] ③ If a blockage occurs, close the first valve, close the second valve, completely disassemble all the pipelines between the valves for further cleaning, and block a blind plate at the first valve to avoid gas leakage.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1. The first condensate pipeline of the present invention is vertically arranged and fixedly connected to the bottom of the horizontally arranged gas pipeline. The expansion pipe is fixedly connected to the bottom of the first condensate pipeline, and the end of the expansion pipe is closed. One end of the second condensate pipeline is vertically and fixedly connected to the first condensate pipeline, and a filter screen is provided at the connection. The other end extends into the liquid seal tank, and the liquid seal tank is provided with an overflow port connected to the venting system pipeline. The impurities (such as coal powder and coal cinder) in the gas condensate are filtered through the filter screen, and the filtered condensate is discharged through the liquid seal tank and sent to the venting system. While discharging the condensate, gas leakage is avoided. The accumulated filter residues are deposited in the expansion pipe, ensuring the subsequent condensate is clean and avoiding blockage of equipment and pipelines. The closed end of the expansion pipe has the function of storing impurities (such as coal cinder and coal powder), reducing the cleaning frequency and saving labor costs.

[0028] 2. A drain funnel is arranged below the gas pipeline of the present invention. The drain funnel is a geometric body with a wider top and a narrower bottom and is connected to the first condensate pipeline, facilitating the drainage of condensate from the gas pipeline to the first condensate pipeline.

[0029] 3. The present invention is provided with a reducing pipe and an expansion pipe to increase the volume for storing impurities (such as coal cinder and coal powder) in the condensate, so as to reduce the cleaning frequency. A pipe end blind plate is arranged below the expansion pipe, facilitating disassembly and cleaning.

[0030] 4. The present invention is provided with an observation pipe, and a lighted sight glass is provided on the observation pipe, which is conducive to observing the precipitation of impurities (such as coal cinder and coal powder).

[0031] 5. The second condensate pipeline of the present invention is provided with a second valve and a steam valve. The steam valve is connected to the steam pipeline and is used for cleaning the first and second condensate pipelines and backwashing the filter screen.

[0032] 6. A third valve is provided on the observation pipe of the present invention, facilitating the quick disassembly and installation of the sight glass.

[0033] 7. The observation pipe of the present invention is obliquely and upwardly fixedly connected to the first condensate pipeline, avoiding the deposition and pollution of coal cinder and coal powder on the lighted sight glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural and process principle diagram of the present invention.

[0035] Figure 2 It is a front view of the schematic structure of the gas pipeline and the drain funnel of the present invention.

[0036] Figure 3 It is a side view of the schematic structure of the gas pipeline and the drain funnel of the present invention.

[0037] Markings in the figure: 1, gas pipeline; 2, drain funnel; 31, first condensate pipeline; 32, second condensate pipeline; 4, reducer; 5, expansion pipe; 6, blind plate; 7, liquid seal tank; 8, sight glass with lamp; 9, filter screen; 10, first valve; 11, second valve; 12, third valve; 13, steam valve; 14, full-flow port; 15, relief pipe; 16, observation pipe. Detailed implementation mode

[0038] The 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 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship 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 therefore cannot be understood as a limitation of the present invention.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can 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.

[0041] In the description of the present invention, it should be noted that the terms used here are only for describing specific implementation modes and are not intended to limit the exemplary embodiments according to the present invention. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0042] 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 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 authorized specification. In all the examples shown and discussed here, any specific value should be interpreted 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. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] 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 protection scope of the present invention.

[0044] As Figures 1-3 shown, a gas condensate discharge device includes a drain funnel 2, a first condensate pipeline 31, a second condensate pipeline 32, a reducing pipe 4, an expansion pipe 5, and a liquid seal tank 7. The first condensate pipeline 31 and the second condensate pipeline 32 form a condensate pipeline.

[0045] As Figure 2 、 Figure 3 shown, the gas pipeline 1 is a horizontally arranged pipeline. The drain funnel 2 is fixedly connected to the bottom of the gas pipeline 1. The drain funnel 2 is a geometric body with a wider top and a narrower bottom. The gas pipeline 1 is connected to the first condensate pipeline 31 through the drain funnel 2, facilitating the discharge of condensate from the gas pipeline 1 to the first condensate pipeline 31.

[0046] As Figure 1 shown, the first condensate pipeline 31 is vertically arranged. Its top is connected to the drain funnel 1, and a first valve 31 is provided at the connection. The first valve 31 is a downward liquid valve.

[0047] The reducing pipe 4 is a frustum of a cone with a narrower top and a wider bottom. The top of the reducing pipe 4 is fixedly connected to the bottom end of the first condensate pipeline 31, and the bottom of the reducing pipe 4 is fixedly connected to the top end of the expansion pipe 5. A blind plate 6 is provided at the bottom end of the expansion pipe 5. The diameter of the expansion pipe 5 is larger than the diameter of the first condensate pipeline 31, increasing the volume for storing impurities (such as coal cinder, coal powder, etc.) in the condensate to reduce the cleaning frequency. A pipe end blind plate 6 is provided below the expansion pipe 5 for convenient disassembly and cleaning.

[0048] The second condensate pipeline 32 is The shape has an arc transition at the bend. The horizontal pipe of the second condensate pipe 31 is vertically fixed to the middle of the first condensate pipe 31, and a filter screen 9 is provided at the connection. A second valve 32 is provided on the horizontal pipe of the second condensate pipe 32. The second valve 32 is a liquid discharging valve. A short pipe is provided between the second valve 32 and the filter screen 9 and is connected to the steam pipe. A steam valve 13 is provided on the short pipe for cleaning the first condensate pipe 31, the second condensate pipe 32 and backwashing the filter screen 9. The vertical pipe of the second condensate pipe 32 extends into the bottom of the liquid seal tank 7. An overflow port 14 is provided at the upper part of the side wall of the liquid seal tank 7. The overflow port 14 is connected to the venting system pipe. A vent pipe 15 is provided on the top cover of the liquid seal tank 7. The steam valve 13 is connected to the steam pipe,

[0049] The observation pipe 16 is obliquely and upwardly fixed to the first condensate pipe 31, located between the horizontal pipe of the second condensate pipe 32 and the reducing pipe 4. A third valve 12 and a lighted sight glass 8 are successively provided on the observation pipe 16. The third valve 12 adopts a knife gate valve, and the knife gate valve has the advantages of compact structure, reliable sealing, light and flexible operation, smooth passage, and light weight. In the present invention, the observation pipe 16 is provided, and the lighted sight glass 8 is provided on the observation pipe 16, which is conducive to observing the precipitation of impurities (such as coal cinder and pulverized coal). The third valve 12 is provided on the observation pipe 16, which is convenient for quickly disassembling and installing the sight glass. The observation pipe 16 is obliquely and upwardly fixed to the first condensate pipe 31 to prevent coal cinder and pulverized coal from depositing and polluting the lighted sight glass.

[0050] A usage method of a gas condensate discharging device is as follows:

[0051] The condensate of the gas pipe 1 flows into the condensate pipe composed of the first condensate pipe 31 and the second condensate pipe 32 through the drain funnel 2. Both sides of the drain funnel 2 have a certain slope, which is more conducive to the discharge of condensate. The filter screen 9 is arranged at the straight tee of the condensate pipe. The filter screen 9 needs to be placed vertically. The purpose is to rely on the gravity effect to avoid or reduce the attachment of impurities (such as coal cinder and pulverized coal) in the condensate on the filter screen 9. The impurities in the condensate are separated from the filter screen 9 and enter the expansion pipe 5 through the reducing pipe 4. The expansion pipe 5 has a certain volume and functions to store impurities, so as to reduce the cleaning frequency.

[0052] An upward inclined tee is arranged on the first condensate pipe 31, and the third valve 12 and the lighted sight glass 8 are arranged. When the lighted sight glass 8 is polluted, it can be quickly disassembled and cleaned by closing the third valve 12. After disassembly, the blind plate 6 should be blocked in time to avoid gas leakage. The pipe is inclined upward to prevent coal cinder and pulverized coal from depositing and polluting the lighted sight glass 8. After the condensate passes through the filter screen 9 to filter out impurities, it flows into the liquid seal tank 7 and then is sent to the venting system through the overflow port 14. The liquid seal height of the liquid seal tank 7 should be designed based on the highest pressure of the gas pipe.

[0053] Observe the accumulation of impurities (such as cinder, pulverized coal, etc.) in the expansion pipe 5 through the lighted sight glass 8. When cleaning is required, the following three methods can be adopted according to the situation:

[0054] 1) Close the first valve 10, open the steam valve 13, and introduce steam into the condensate pipeline. At this time, the condensate pipeline from behind the first valve 10 to the liquid seal tank 7 can be cleaned, and the filter screen 9 can be back purged; then open the first valve 10 and close the second valve. At this time, the condensate pipeline from the drain funnel 2 of the gas pipeline to the second valve 11 can be cleaned in the reverse direction.

[0055] 2) Close the first valve 10 and the second valve 11, adjust the figure-eight blind plate at the first valve 10 to the closed state to avoid gas leakage, then open the steam valve 13, introduce steam into the condensate pipeline. After the impurities (such as cinder, pulverized coal, etc.) are softened after a period of time, close the steam valve 13, open the pipe end blind plate 6, and discharge the impurities, which can be recycled into the coal material. At this time, the condensate pipeline between the first valve 10 and the second valve 11, as well as the parts of the reducing pipe 4 and the expansion pipe 5 can be cleaned, and the filter screen 9 can be back purged.

[0056] 3) In case of extreme situations, such as serious blockage caused by untimely cleaning, close the first valve 10 and the second valve 11, completely disassemble all the pipelines between the valves for further cleaning, and at the same time block the blind plate 6 at the first valve 10 to avoid gas leakage. Even in this case, the cleanliness of the filter screen 9 to the liquid seal tank 7 and subsequent condensate can be ensured.

[0057] Regardless of the cleaning method, when the steam valve 13 is not in use, the figure-eight blind plate beside the valve needs to be adjusted to the closed state to avoid gas leakage into the steam pipeline.

[0058] The structure of the present invention is simple, easy to disassemble, easy to clean, flexible in operation, safe and reliable, which ensures the cleanliness of the subsequent condensate, avoids blocking the equipment and pipelines. It has the function of storing impurities (such as cinder, pulverized coal, etc.), reduces the cleaning frequency, and saves labor costs. Equipped with a lighted sight glass 8, it realizes visual operation; it can be modified on the basis of the existing gas condensate pipeline, with wide applicability.

[0059] The above is only a part of the specific embodiments 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. A device for discharging gas condensate, characterized in that: It includes a first condensate pipeline, a second condensate pipeline, an expansion pipe and a liquid seal tank; The first condensate pipeline is vertically arranged and fixedly connected to the bottom of the horizontally arranged gas pipeline; The expansion pipe is fixedly connected to the bottom of the first condensate pipeline, and the end of the expansion pipe is closed; One end of the second condensate pipeline is vertically and fixedly connected to the first condensate pipeline, and a filter screen is provided at the connection, and the other end extends into the liquid seal tank; The liquid seal tank is provided with an overflow port connected to the venting system pipeline.

2. The device for discharging gas condensate according to claim 1, characterized in that: It further includes a drain funnel, the drain funnel is a geometric body with a wider top and a narrower bottom, the top of the drain funnel is fixedly connected to the bottom of the gas pipeline, and the bottom is connected to the first condensate pipeline.

3. The device for discharging gas condensate according to claim 1, characterized in that: The first condensate pipeline is provided with a first valve, the second condensate pipeline is provided with a second valve and a steam valve, the steam valve is located between the second valve and the filter screen, and the steam valve is connected to the steam pipeline.

4. The device for discharging gas condensate according to claim 1, characterized in that: The diameter of the expansion pipe is larger than the diameter of the first condensate pipeline, and the expansion pipe is connected to the first condensate pipeline through a reducing pipe; a blind plate is provided at the bottom end of the expansion pipe.

5. The device for discharging gas condensate according to claim 1, characterized in that: It further includes an observation pipe, and the observation pipe is obliquely and upwardly fixedly connected to the first condensate pipeline.

6. The device for discharging gas condensate according to claim 5, characterized in that: A lighted sight glass is provided on the observation pipe.

7. The device for discharging gas condensate according to claim 5, characterized in that: A third valve is provided on the observation pipe.

8. The device for discharging gas condensate according to claim 7, characterized in that: The third valve adopts a knife gate valve.

9. The device for discharging gas condensate according to claim 3 or 7, characterized in that: The first valve, the second valve and the third valve are all provided with figure-8 blind plates.

10. The method of using the device for discharging gas condensate according to any one of claims 1-9, characterized in that, Specifically includes the following steps: 1) The condensate in the gas pipeline flows into the first condensate pipeline through the drain funnel, the impurities in the condensate are separated from the filter screen, enter the expansion pipe through the reducing pipe, and the expansion pipe stores the impurities; 2) After the condensate passes through the filter screen to remove impurities, it flows into the liquid seal tank and then is sent to the venting system through the overflow port; 3) Observe the accumulation of impurities in the expansion pipe through the lighted sight glass, and clean it in the following three ways: ① Close the first valve, open the steam valve, and introduce steam into the first and second condensate pipelines; clean the first and second condensate pipelines between the first valve and the liquid seal tank, and back purge the filter screen; Then open the first valve, close the second valve, and clean the first and second condensate pipelines from the drain funnel to the second valve in the reverse direction; ② Close the first valve and the second valve. Adjust the figure-eight blind plate of the first valve to the closed state to prevent gas leakage. Then open the steam valve and introduce steam into the first and second condensate pipelines. After the impurities are softened, close the steam valve, open the blind plate of the expansion pipe, and discharge the impurities. At this time, clean the part of the first and second condensate pipelines between the first valve and the second valve, as well as the reducing pipe and the expansion pipe, and back purge the filter screen. ③ In case of blockage, close the first valve and the second valve, completely disassemble all the pipelines between the valves for further cleaning. At the same time, block a blind plate at the first valve to prevent gas leakage.

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