A complete dosing device for anti-coking agent

Abstract

The application provides a complete dosing device of an anti-coking agent, which is applied to a coal gas inlet pipeline, the coal gas inlet pipeline is communicated with a coking device, and the complete dosing device comprises a storage assembly, a medicine storage tank is arranged in the storage assembly, a medicine delivery assembly, the medicine delivery assembly is communicated with the medicine storage tank and the coal gas inlet pipeline, the medicine delivery assembly comprises a spray head, the spray head is arranged in the coal gas inlet pipeline, the medicine is delivered to the coal gas inlet pipeline, the coking substances in the coking device are cleaned, the central line of the spray head and the central line of the coal gas inlet pipeline form an angle of 0-57 degrees, and a safety assembly is arranged on the medicine delivery assembly, and the excess medicine delivered by the medicine delivery assembly is delivered back to the medicine storage tank. Through cooperation of the storage assembly, the medicine delivery assembly and the safety assembly, the coking substances in the coal gas inlet pipeline are treated, and long-term stable operation of a coal gas comprehensive utilization device is ensured.

Description

Technical Field

[0001] This application relates to the field of comprehensive utilization technology of coal gas, specifically to a complete dosing device for an anti-coking agent. Background Technology

[0002] In the comprehensive utilization of by-product coal gas from the coking / pyrolysis industry, coking (scale) on pipelines, fittings, and equipment has become a persistent problem. Because coal gas contains dust, tar, and other impurities, it easily produces coking scale in critical components such as separators, filters, and compressors. This leads to increased pressure differentials in pipe fittings, coking on the inner walls of pipelines, increased energy consumption in equipment, and unit vibration. Especially for projects using centrifugal chillers, switching to a backup line or shutting down for coking (scale) removal requires every 2-3 months of operation, severely impacting the normal operation of the centrifugal chillers and the safe and stable operation of the entire project, resulting in resource waste and economic losses.

[0003] The current methods for removing coke (scale) in the industry are: steam heating and softening, high-pressure water jet washing, and manual scraping. These methods seriously affect the normal production and profitability of enterprises, cause waste of gas resources and energy, and harm the health of maintenance personnel.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] This application provides a complete set of dosing equipment, which is mainly to solve the problem that in the prior art, the gas in the gas inlet pipeline of gas comprehensive utilization equipment such as centrifuge units contains dust, tar and other impurities, which easily generate coking substances - coke scale, and affect the normal operation of the unit.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a complete dosing device for anti-coking agents, applied to a gas inlet pipeline, wherein the gas inlet pipeline is connected to coking equipment, and includes:

[0008] Drug storage assembly: includes a drug storage tank, the inside of which stores the drug;

[0009] Drug delivery assembly: The drug delivery assembly connects the drug storage tank to the gas inlet pipeline. The drug delivery assembly includes a nozzle, which is disposed in the gas inlet pipeline to deliver the drug to the gas inlet pipeline and clean the coking material in the coking equipment. The center line of the nozzle and the center line of the gas inlet pipeline form an angle of 0-57°.

[0010] Safety component: installed on the drug delivery assembly to return excess drug delivered by the drug delivery assembly back to the storage tank.

[0011] This application utilizes a combination of a drug storage component, a drug delivery component, and a safety component to treat coking substances in the coal gas inlet pipeline, thereby ensuring the long-term stable operation of the coal gas comprehensive utilization device.

[0012] In one specific implementation scheme, the nozzle is located at the top of the gas inlet pipe, the distance between the nozzle and the top of the gas inlet pipe is greater than or equal to 5 cm, the distance between the nozzle and the coking equipment is greater than or equal to 100 cm, and the concentration of the agent sprayed by the nozzle is 10-50 mg / m³.

[0013] In one specific implementation, the drug delivery assembly includes a first drug pipeline, a first shut-off valve, a second drug pipeline, and a dosing pump;

[0014] One end of the first agent pipeline is connected to the drug storage tank, the other end of the first agent pipeline is connected to one end of the first shut-off valve, the other end of the first shut-off valve is connected to one end of the second agent pipeline, the other end of the second agent pipeline is connected to one end of the dosing pump, and the other end of the dosing pump is connected to the gas inlet pipeline.

[0015] In one specific implementation, the safety component includes an energy storage device;

[0016] The accumulator is connected to the other end of the dosing pump to absorb the pressure fluctuations generated by the dosing pump.

[0017] In one specific implementation, the safety component further includes a pressure gauge;

[0018] The pressure gauge is connected to the accumulator, and the range of the pressure gauge is 1.5-2 times the working pressure of the drug.

[0019] In one specific implementation, the drug delivery assembly further includes a third drug conduit, a second shut-off valve, and a fourth drug conduit;

[0020] One end of the third agent pipeline is connected to the other end of the dosing pump, the other end of the third agent pipeline is connected to one end of the second shut-off valve, the other end of the second shut-off valve is connected to one end of the fourth agent pipeline, and the other end of the fourth agent pipeline is connected to the nozzle.

[0021] In one specific implementation, the safety component further includes a first agent return line, a safety valve, and a second agent return line;

[0022] One end of the first drug return pipeline is connected to the other end of the dosing pump, the other end of the first drug return pipeline is connected to one end of the safety valve, the other end of the safety valve is connected to one end of the second drug return pipeline, and the other end of the second drug return pipeline is connected to the drug storage tank.

[0023] In one specific implementation, the medicine storage tank is equipped with a level gauge for observing the remaining amount of medicine.

[0024] In one specific implementation scheme, at least two dosing pumps are provided, and the rated flow rate of a single dosing pump is greater than or equal to 1.5 times the design flow rate of the agent.

[0025] In one specific implementation scheme, the gas inlet pipe is equipped with a discharge device to discharge the cleaned coking material and reagents;

[0026] The discharge device includes a gas inlet pipe drain valve, a compressor unit drain valve, and a separator drain valve.

[0027] Compared with the prior art, this application has at least the following advantages:

[0028] 1. This application restricts the angle, depth, and position of the nozzle to ensure that the nozzle can clean the coking material in the coking equipment during use, ensuring the long-term stable operation of the coal gas comprehensive utilization device, and solving the problems of resource waste, economic loss, and health damage in existing coking (scaling) removal methods.

[0029] 2. By setting up a first reagent return pipe and a second reagent return pipe, this application can promptly return the reagent to the storage tank when the working pressure of the reagent is too high, thereby avoiding harm caused by excessive working pressure of the reagent and increasing the safety of this application. Attached Figure Description

[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0031] Figure 1 This is a process flow diagram of the complete dosing device for the anti-coking agent provided in this application.

[0032] in:

[0033] 1-Storage tank, 2-First shut-off valve, 3-Dosing pump, 4-Second shut-off valve, 5-Nozzle, 6-First agent pipeline, 7-Second agent pipeline, 8-Third agent pipeline, 9-Fourth agent pipeline, 10-Gas inlet pipeline, 11-First agent return pipeline, 12-Safety valve, 13-Second agent return pipeline, 14-Coking equipment, 15-Pressure gauge, 16-Accumulator. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to fixed communication, detachable communication, or integral communication; they can refer to mechanical communication or electrical communication; they can refer to direct connection or indirect connection through an intermediate medium; and they can refer to communication within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] To more clearly illustrate the technical solution of this utility model, the following description is provided in the form of specific embodiments.

[0038] Example 1

[0039] This embodiment provides a complete set of dosing equipment for anti-coking agents. This complete set of dosing equipment is mainly to solve the problem that in the existing technology, the gas in the gas inlet pipe 10 of the gas comprehensive utilization device such as centrifuge unit contains dust, tar and other impurities, so coking material - coke / scale - is easily generated in the coking equipment 14, which affects the normal operation of the unit. By setting nozzles 5 in the gas inlet pipe 10, the agent is sprayed into the gas inlet pipe 10 through the nozzles 5 to dissolve the coking material in the coking equipment 14, and clean the coking material without stopping the operation, so as to achieve long-term stable operation of the gas comprehensive utilization device and solve the problems of resource waste, economic loss and health damage in the existing coking (scale) removal methods.

[0040] In this embodiment, as Figure 1 As shown, the complete set of dosing equipment mainly includes three parts: a dosing storage component, a dosing delivery component, and a safety component. The dosing storage component is used to store the dosing agent, the dosing delivery component is used to deliver the dosing agent stored in the dosing storage component to the gas inlet pipeline 10 for use, and the safety component re-delivers excess dosing agent delivered by the delivery component back to the dosing storage component. Through the cooperation of the dosing storage component, the dosing delivery component, and the safety component, the coking material in the coking equipment 14 is treated, ensuring the long-term stable operation of the gas comprehensive utilization device.

[0041] In this embodiment, the drug storage assembly includes a drug storage tank 1, and the safety assembly includes a loop pipe. The drug storage tank 1 stores the drug, and the delivery assembly is connected to the drug storage tank 1 to deliver the drug to the gas inlet pipe 10. The loop pipe is used to return any excess drug delivered by the delivery assembly back to the drug storage tank 1. A level gauge is installed on the drug storage tank 1 to detect the remaining amount of drug in the tank.

[0042] The drug delivery assembly includes a first drug pipeline 6, a first shut-off valve 2, a second drug pipeline 7, a dosing pump 3, a third drug pipeline 8, a second shut-off valve 4, a fourth drug pipeline 9, and a nozzle 5. One end of the first drug pipeline 6 is connected to the outlet of the storage tank 1; the other end of the first drug pipeline 6 is connected to one end of the first shut-off valve 2; the other end of the first shut-off valve 2 is connected to one end of the second drug pipeline 7; the other end of the second drug pipeline 7 is connected to one end of the dosing pump 3; the other end of the dosing pump 3 is connected to one end of the third drug pipeline 8; the other end of the third drug pipeline 8 is connected to one end of the second shut-off valve 4; and the other end of the second shut-off valve 4 is connected to the fourth drug pipeline. One end of the fourth agent pipeline 9 is connected to the nozzle 5, forming a passage from the storage tank 1 to the first agent pipeline 6 to the first shut-off valve 2 to the second agent pipeline 7 to the dosing pump 3 to the third agent pipeline 8 to the second shut-off valve 4 to the fourth agent pipeline 9 to the nozzle 5 to the gas inlet pipeline 10. The agent is pressurized by the dosing pump 3 and then atomized through the nozzle 5 into the gas inlet pipeline 10 to mix thoroughly with the gas. The agent then travels with the gas to the coking equipment 14. After the agent comes into full contact with the coking material (coking (scale)) in the coking equipment 14, it dissolves and removes the coking material, while also inhibiting the formation of new coking (scale).

[0043] In order to ensure that the nozzle 5 can maintain a good atomization state, in this embodiment, the dosing pump 3 is a metering pump. The rated flow rate of the dosing pump 3 is greater than or equal to 1.5 times the design flow rate of the agent. The working pressure is considered to ensure that the pressure difference between the inlet and outlet of the nozzle 5 is greater than or equal to 0.6 MPa after deducting the pressure loss due to height and pipeline. At least two dosing pumps 3 are provided.

[0044] In this embodiment, to ensure a better cleaning effect, the rated flow rate of the dosing pump 3 is equal to 1.5 times the design flow rate of the agent, and the pressure difference between the inlet and outlet of the nozzle 5 is equal to 0.6 MPa. Two dosing pumps 3 are installed on site, one for use (main dosing pump) and one for standby (backup dosing pump). The two dosing pumps 3 can be the same model or different models according to the actual working conditions on site. When the main dosing pump fails, the standby dosing pump will be activated to take over its work, ensuring the continuous operation of the system.

[0045] Meanwhile, in this embodiment, the nozzle 5 is located at the top of the gas inlet pipe 10, the angle between the centerline of the nozzle 5 and the centerline of the gas inlet pipe 10 is 0-57°, the distance between the nozzle 5 and the top of the gas inlet pipe 10 is greater than or equal to 5cm, the distance between the nozzle 5 and the coking device 14 is greater than or equal to 100cm, and the concentration of the agent sprayed by the nozzle 5 is 10-50mg / m³. In order to ensure a better cleaning effect, the distance between the nozzle 5 and the top of the gas inlet pipe 10 is equal to 5cm, the distance between the nozzle 5 and the coking device 14 is equal to 100cm, the concentration of the agent sprayed by the nozzle 5 is 40mg / m³, and the angle between the centerline of the nozzle 5 and the centerline of the gas inlet pipe 10 is 57°.

[0046] Meanwhile, a discharge device is installed on the gas inlet pipe 10. Since the concentration of the reagent in the gas ranges from 10-50 mg / m³, after fully dissolving the coke (scale), the gas and liquid are separated and discharged through the discharge device, without affecting the gas and subsequent process flow. In this embodiment, the discharge device can be a gas inlet pipe drain valve, a compressor unit drain valve, a separator drain valve, etc.

[0047] To ensure the safety of the device operation, safety components include an accumulator 16 and a pressure gauge 15. One end of the accumulator 16 is connected to the other end of the dosing pump 3, and the other end of the accumulator 16 is connected to the pressure gauge 15. The pressure gauge 15 is used to detect the working pressure of the agent, and its range is 1.5-2 times the working pressure. In this embodiment, the range of the pressure gauge 15 is set to 2 times the working pressure. When pressure fluctuations occur at the outlet of the dosing pump 3, the accumulator 16 absorbs the fluctuations, stabilizes the drug supply pressure, and maintains a continuous and good atomization state at the nozzle 5, thereby ensuring the descaling effect.

[0048] When the working pressure of the agent exceeds the safe range, the loop pipeline returns the agent to the storage tank 1 to reduce the working pressure. The loop pipeline includes a first agent return pipeline 11, a safety valve 12, and a second agent return pipeline 13. One end of the first agent return pipeline 11 is connected to the other end of the dosing pump 3, and the other end of the first agent return pipeline 11 is connected to one end of the safety valve 12. The other end of the safety valve 12 is connected to one end of the second agent return pipeline 13, and the other end of the second agent return pipeline 13 is connected to the return port of the storage tank 1, forming a loop pipeline of dosing pump 3 - first agent return pipeline 11 - safety valve 12 - second agent return pipeline 13 - storage tank 1. When the working pressure of the agent exceeds the safe range, the safety valve 12 is activated, and the excess agent returns to the storage tank 1 through the first agent return pipeline 11 and the second agent return pipeline 13, ensuring system safety.

[0049] In this embodiment, the safety valve 12 is a spring-loaded safety valve. When the working pressure exceeds the safe range, the safety valve 12 automatically opens, and the excess medicine returns to the storage tank 1 through the first medicine return pipe 11 and the second medicine return pipe 13. Of course, in actual operation, different types of safety valves can be selected for use according to the needs.

[0050] To further enhance understanding of this utility model, the following specific operating steps are provided:

[0051] The reagent is injected into the storage tank 1 through the top filling port of the storage tank 1 in advance. According to the coking situation of the coking equipment on site, the flow rate of the dosing pump 3 is adjusted to meet the dosage required for coking removal on site. The reagent is input into the dosing pump 3 through the first reagent pipeline 6, the first shut-off valve 2 and the second reagent pipeline 7 for pressure increase. The pressurized reagent passes through the third reagent pipeline 8, the second shut-off valve 4, the fourth reagent pipeline 9 and the nozzle 5, and enters the gas inlet pipeline 10 in the form of atomization to fully mix with the gas. It then travels with the gas to the coking equipment 14. After the reagent comes into full contact with the coking material in the coking equipment 14, it dissolves and removes it, and at the same time inhibits the formation of new coking (scale).

[0052] If the pressure of the medicine exceeds the safe range, the safety valve 12 opens, and the excess medicine flows back to the storage tank 1 through the first medicine return pipe 11 and the second medicine return pipe 13, ensuring the safe operation of the system.

[0053] When pressure fluctuations occur at the outlet of the dosing pump 3, the accumulator 16 absorbs the pressure, stabilizes the dosing pressure, and maintains a continuous and good atomization state at the nozzle 5, thereby ensuring the descaling effect.

[0054] Of course, to prevent the nozzle 5 from getting clogged, if it is used continuously, the nozzle 5 can be avoided from getting clogged. However, when using the nozzle 5 intermittently, it is necessary to start the nozzle 5 at fixed intervals to ensure that the nozzle 5 can spray the agent smoothly.

[0055] The beneficial effects of this utility model are as follows:

[0056] 1. This application restricts the angle, depth and position of the nozzle 5 to ensure that the nozzle 5 can clean the coking material in the coking equipment 14 during use, and ensures the long-term stable operation of the coal gas comprehensive utilization device, thus solving the problems of resource waste, economic loss and health damage in existing coking (scale) removal methods.

[0057] 2. By setting up a first reagent return pipe 11 and a second reagent return pipe 13, this application can promptly return the reagent to the storage tank 1 when the working pressure of the reagent is too high, thereby avoiding harm caused by excessive working pressure of the reagent and increasing the safety of this application.

[0058] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A complete dosing device for an anti-coking agent, applied to a gas inlet pipeline, wherein the gas inlet pipeline is connected to a coking equipment, characterized in that, include: Drug storage assembly: includes a drug storage tank, the inside of which stores the drug; Drug delivery assembly: The drug delivery assembly connects the drug storage tank to the gas inlet pipeline. The drug delivery assembly includes a nozzle, which is disposed in the gas inlet pipeline to deliver the drug to the gas inlet pipeline and clean the coking material in the coking equipment. The center line of the nozzle and the center line of the gas inlet pipeline form an angle of 0-57°. Safety component: installed on the drug delivery assembly to return excess drug delivered by the drug delivery assembly back to the storage tank.

2. The complete dosing device according to claim 1, characterized in that, The nozzle is located at the top of the gas inlet pipe, the distance between the nozzle and the top of the gas inlet pipe is greater than or equal to 5cm, the distance between the nozzle and the coking equipment is greater than or equal to 100cm, and the concentration of the agent sprayed by the nozzle is 10-50mg / m³.

3. The complete dosing device according to claim 1, characterized in that, The drug delivery assembly includes a first drug pipeline, a first shut-off valve, a second drug pipeline, and a dosing pump; One end of the first agent pipeline is connected to the drug storage tank, the other end of the first agent pipeline is connected to one end of the first shut-off valve, the other end of the first shut-off valve is connected to one end of the second agent pipeline, the other end of the second agent pipeline is connected to one end of the dosing pump, and the other end of the dosing pump is connected to the gas inlet pipeline.

4. The complete dosing device according to claim 3, characterized in that, The safety component includes an energy storage device; The accumulator is connected to the other end of the dosing pump to absorb the pressure fluctuations generated by the dosing pump.

5. The complete dosing device according to claim 4, characterized in that, The safety components also include a pressure gauge; The pressure gauge is connected to the accumulator, and the range of the pressure gauge is 1.5-2 times the working pressure of the drug.

6. The complete dosing device according to claim 3, characterized in that, The drug delivery assembly also includes a third drug pipeline, a second shut-off valve, and a fourth drug pipeline; One end of the third agent pipeline is connected to the other end of the dosing pump, the other end of the third agent pipeline is connected to one end of the second shut-off valve, the other end of the second shut-off valve is connected to one end of the fourth agent pipeline, and the other end of the fourth agent pipeline is connected to the nozzle.

7. The complete dosing device according to claim 3, characterized in that, The safety components also include a first agent return pipe, a safety valve, and a second agent return pipe; One end of the first drug return pipeline is connected to the other end of the dosing pump, the other end of the first drug return pipeline is connected to one end of the safety valve, the other end of the safety valve is connected to one end of the second drug return pipeline, and the other end of the second drug return pipeline is connected to the drug storage tank.

8. The complete dosing device according to claim 1, characterized in that, The medicine storage tank is equipped with a level gauge for observing the remaining amount of medicine.

9. The complete dosing device according to claim 3, characterized in that, The dosing pump is provided in at least two, and the rated flow rate of a single dosing pump is greater than or equal to 1.5 times the design flow rate of the agent.

10. The complete dosing device according to claim 1, characterized in that, The gas inlet pipe is equipped with a discharge device to discharge the cleaned coking material and reagents; The discharge device includes a gas inlet pipe drain valve, a compressor unit drain valve, and a separator drain valve.

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