One-to-five pipeline conveying system for dry desulphurization in furnace

Abstract

The utility model discloses a one-to-five pipeline conveying system for dry desulphurization in a furnace. The conveying system is provided with a main material conveying pipe, a gas conveying acceleration chamber is arranged at one end of the main material conveying pipe, a one-to-five pipeline assembly is arranged at the other end of the main material conveying pipe, a material inlet of the gas conveying acceleration chamber is connected with a stock bin, and a gas inlet of the gas conveying acceleration chamber is connected with a Roots blower through a gas pipeline; the one-to-five pipeline assembly comprises a mother pipe and branch pipes, one end of the mother pipe is connected with the material main conveying pipe, and the other end of the mother pipe is provided with a blocking plate cap; the branch pipes are distributed on the mother pipe at equal intervals, each branch pipe is composed of a straight pipe section and a bent pipe section, the straight pipe sections are communicated with the mother pipe, the central axis of each straight pipe section and the central axis of the mother pipe are arranged at an angle, and the bent pipe sections are connected with branch pipe flanges. The desulfurizing agent conveying device has the advantages of simple structure, low cost, uniform flow, convenience in maintenance and the like, and is suitable for conveying desulfurizing agents of large incineration equipment such as garbage incinerators and biomass incinerators.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of conveying system for dry desulfurization in furnace, especially to a one-to-five pipeline conveying system for dry desulfurization in furnace, which can uniformly distribute desulfurizer to multiple injection points, and is suitable for desulfurizer conveying of large-scale incineration equipment such as waste incinerator and biomass incinerator. BACKGROUND

[0002] The dry desulfurization technology in furnace is derived from the dual pursuit of efficiency and environmental protection in industrial production. With the awakening of environmental awareness and the implementation of energy-saving and emission-reducing policies, the traditional wet technology is challenged due to its high energy consumption, large water consumption and complicated sewage treatment. In contrast, the dry technology is increasingly favored due to its low energy consumption, water saving and significant environmental benefits. In the process of dry desulfurization in furnace, desulfurizer needs to be injected into multiple points in the incinerator from the silo through the conveying system. Whether the desulfurizer can be uniformly injected into the furnace directly affects the desulfurization efficiency and cost.

[0003] The existing technical solution usually uses multiple independent conveying systems to convey desulfurizer to each injection point. This solution has the following disadvantages:

[0004] (1) Large equipment investment: each injection point needs to be equipped with an independent conveying system, including a conveying fan and a pipeline, which significantly increases the equipment cost;

[0005] (2) High operating cost: the operation of multiple conveying systems increases energy consumption, especially for long-distance conveying, the pipeline resistance significantly increases the energy consumption of the fan;

[0006] (3) Complex maintenance: the maintenance and management of multiple conveying systems are complex, which increases the difficulty of operation and maintenance. INVENTION CONTENT

[0007] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a one-to-five pipeline conveying system for dry desulfurization in furnace. Through optimized design, only one set of conveying system is needed to realize uniform distribution and injection of desulfurizer to multiple injection points, thereby reducing equipment investment and operating cost.

[0008] The technical solution adopted by the utility model to solve the technical problem is:

[0009] A one-to-five pipeline conveying system for dry desulfurization in furnace is used for uniformly injecting desulfurizer in the silo into the incinerator, which has a material main conveying pipe. One end of the material main conveying pipe is provided with a gas conveying acceleration chamber, and the other end of the material main conveying pipe is provided with a one-to-five pipeline assembly. The gas conveying acceleration chamber is connected with the silo through a material inlet, and the gas inlet of the gas conveying acceleration chamber is connected with a Roots blower through a gas pipeline.

[0010] The one-to-five pipe assembly comprises a main pipe and branch pipes, one end of the main pipe is connected with a main material conveying pipe, and the other end of the main pipe is provided with a blanking cap;

[0011] The branch pipes are equidistantly distributed on the main pipe, and each branch pipe is composed of a straight pipe section and a bent pipe section, the straight pipe section is in communication with the main pipe, and the central axis of the straight pipe section is arranged at an angle with the central axis of the main pipe, and the bent pipe section is connected with a branch pipe flange.

[0012] Through the design of the main material conveying pipe, the gas conveying acceleration chamber and the one-to-five pipe assembly, the desulfurizing agent is uniformly injected from the silo to the incinerator. This design improves the desulfurization efficiency, ensures the desulfurization effect in the incinerator, and reduces the waste of desulfurizing agent.

[0013] After the desulfurizing agent enters the main pipe from the inlet flange, the dynamic pressure is converted into static pressure through the action of the main pipe, thereby forming a relatively uniform static pressure distribution in the main pipe. Under the action of the uniform static pressure in the main pipe, the desulfurizing agent uniformly flows out through the branch pipes, realizing the effect of one-to-five. Since the straight pipe section of the branch pipe forms a small angle with the axis of the main pipe, the fluid flow loss is reduced, and the accumulation of desulfurizing agent in the pipe is reduced.

[0014] The one-to-five pipe conveying system for dry desulfurization in the furnace further comprises a cleaning pipe, the central axis of the cleaning pipe is arranged corresponding to the branch pipe and coaxially arranged with the branch pipe, and the branch pipe and the cleaning pipe are arranged on both sides of the main pipe respectively;

[0015] One end of the cleaning pipe is in communication with the main pipe, and the other end of the cleaning pipe is provided with a cleaning pipe nut.

[0016] The arrangement of the cleaning pipe makes it convenient to clean the residues in the branch pipe during use, avoiding the problem of affecting the desulfurization effect due to blockage. This improves the maintainability and reliability of the system.

[0017] Further, the angle α between the central axis of the straight pipe section and the central axis of the main pipe is 10-30°, which optimizes the injection angle of the desulfurizing agent, so that the desulfurizing agent can be more uniformly distributed in the incinerator, further improving the desulfurization efficiency.

[0018] Further, a screw feeder is arranged between the silo and the gas conveying acceleration chamber. The arrangement of the screw feeder can accurately control the amount of desulfurizing agent, ensuring the stability and controllability of the desulfurization process. This helps to maintain the desulfurization effect in the incinerator and reduces unnecessary consumption of desulfurizing agent.

[0019] Further, a main pipe flange is connected between the main material conveying pipe and the main pipe. This connection method is simple and reliable, facilitating the installation and maintenance of the system; at the same time, it also ensures the continuity and stability of the desulfurizing agent during conveying.

[0020] Further, the cleaning pipe is a straight pipe, making the cleaning process smoother and reducing the difficulty and time of cleaning.

[0021] Further, the spiral feeder is arranged above the gas conveying acceleration chamber. This layout optimizes the space utilization of the system and reduces the floor area. At the same time, it also ensures the stability and uniformity of the desulfurizing agent during feeding.

[0022] Further, a pressure gauge is installed on the gas pipeline to detect the pipeline pressure.

[0023] The utility model has the advantages of simple structure, reasonable design, and the following advantages:

[0024] (1) uniform flow, the arrangement mode of the five outflow branch pipes is the same, the straight pipe section of the branch pipe and the axis of the main pipe form a small included angle, reducing the fluid flow loss and the accumulation of desulfurizing agent in the pipeline, ensuring uniform flow and uniform distribution of desulfurizing agent to each injection point,

[0025] (2) efficient and uniform conveying, through the one-to-five pipeline assembly and the gas conveying acceleration chamber, efficient and uniform distribution of desulfurizing agent is realized, ensuring stable desulfurization effect in the incinerator;

[0026] (3) anti-clogging design, the cleaning pipe is coaxially arranged with the branch pipe, and the angle of the straight pipe section is optimized, significantly reducing the risk of clogging and ensuring long-term stable operation of the system;

[0027] (4) convenient operation and maintenance: the modular design (flange connection, cleaning pipe nut) simplifies installation and maintenance, reducing labor cost and time cost;

[0028] (5) low cost, the gas pipeline, the main conveying pipe of the material, the cleaning pipe nut, the main pipe and the branch pipe all adopt series and standardized chemical pipe fittings, the pipeline system has low assembly cost and is easy to manufacture. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0030] Figure 1 It is a structural schematic diagram of the utility model;

[0031] Figure 2It is a structure schematic view of one divides five pipe line subassembly in the utility model.

[0032] In the drawing: 1. Roots blower, 2. Gas pipeline, 3. Silo, 4. Spiral feeder, 5. Gas delivery acceleration chamber, 6. Main material conveying pipe, 7. Mother pipe flange, 8. Mother pipe, 9. Blocking plate cap, 10. Branch pipe, 11. Branch pipe flange, 12. Cleaning pipe, 13. Cleaning pipe nut, 14. Pressure gauge. DETAILED DESCRIPTION

[0033] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains.

[0034] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form also includes the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0035] The technical solutions of the utility model will be described clearly and completely in combination with embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] Glossary:

[0037] Flow definition: flow is a term for measuring the mass of fluid passing through the effective cross section of a closed pipe per unit time, also known as instantaneous flow. Depending on the measurement method, if the volume is measured, it is called volume flow, and if the mass is measured, it is called mass flow.

[0038] Incinerator overview: incinerator is a key equipment for harmless treatment of garbage or biomass, and its core mechanism is to promote the decomposition of organic matter in solid waste into harmless gas, water vapor and ash through high temperature environment (temperature range is usually 850-1100℃).

[0039] Flue gas: here, flue gas refers specifically to the gas, particulate pollutants and their mixture released during the incineration of garbage or biomass.

[0040] The dry desulfurization technology in the furnace: the technology involves adding desulfurizer such as limestone, gypsum and the like in the incinerator, which chemically reacts with the sulfur dioxide generated by combustion under high temperature conditions to generate calcium sulfate and other soluble calcium sulfide compounds, thereby effectively achieving the purpose of desulfurization.

[0041] As shown in Figure 1 and Figure 2 The one-to-five pipeline conveying system for dry desulfurization in the furnace is used for uniformly spraying the desulfurizer in the bunker 3 into the incinerator, and has a material main conveying pipe 6, one end of the material main conveying pipe 6 is provided with a gas conveying acceleration chamber 5, the other end of the material main conveying pipe 6 is provided with a one-to-five pipeline assembly, the material inlet of the gas conveying acceleration chamber 5 is connected with the bunker 3, and the gas inlet of the gas conveying acceleration chamber 5 is connected with a Roots blower 1 through a gas pipeline 2; the one-to-five pipeline assembly includes a mother pipe 8 and branch pipes 10, one end of the mother pipe 8 is connected with the material main conveying pipe 6, and the other end of the mother pipe 8 is provided with a blocking cap 9; the branch pipes 10 are equidistantly distributed on the mother pipe 8, and each branch pipe 10 is composed of a straight pipe section and a bent pipe section, the straight pipe section is in communication with the mother pipe 8, the central axis of the straight pipe section is arranged at an angle with the central axis of the mother pipe 8, and the bent pipe section is connected with a branch pipe flange 11.

[0042] The one-to-five pipeline conveying system for dry desulfurization in the furnace further includes a cleaning pipe 12, the central axis of the cleaning pipe 12 is arranged corresponding to the branch pipe 10 and coaxially arranged with the branch pipe 10, and the branch pipe 10 and the cleaning pipe 12 are arranged on both sides of the mother pipe 8 respectively; one end of the cleaning pipe 12 is in communication with the mother pipe 8, and the other end of the cleaning pipe 12 is provided with a cleaning pipe nut 13.

[0043] The included angle α between the central axis of the straight pipe section and the central axis of the mother pipe 8 is 10-30°.

[0044] A screw feeder 4 is arranged between the bunker 3 and the gas conveying acceleration chamber 5.

[0045] A mother pipe flange 7 is connected between the material main conveying pipe 6 and the mother pipe 8.

[0046] The cleaning pipe 12 is a straight pipe.

[0047] The screw feeder 4 is arranged above the gas conveying acceleration chamber.

[0048] A pressure gauge 14 for detecting the pipeline pressure is arranged on the gas pipeline 2.

[0049] The working process of the one-to-five pipeline conveying system for the in-furnace dry desulfurization is as follows: the desulfurizer in the bin 3 is fed to the gas conveying acceleration chamber 5 by the screw feeder 4, and the Roots blower 1 conveys the gas to the gas conveying acceleration chamber 5. The conveying speed of the material is increased in the gas conveying acceleration chamber 5, and the material is conveyed to the main pipe 6 by the material main conveying pipe 6. Under the action of the main pipe 8, the dynamic pressure of the desulfurizer is converted into static pressure, so that a relatively uniform static pressure distribution is formed in the main pipe 8. Under the action of the uniform static pressure in the main pipe 8, the desulfurizer uniformly flows out through the branch pipes 10, realizing the one-to-five effect. Since the straight pipe section of the branch pipe 10 forms a small angle with the axis of the main pipe 8, the fluid flow loss is reduced, and the accumulation of the desulfurizer in the pipeline is reduced.

[0050] In summary, the one-to-five pipeline conveying system for the in-furnace dry desulfurization realizes uniform injection and precise control of the desulfurizer. This not only improves the desulfurization efficiency and ensures the desulfurization effect in the incinerator, but also reduces the waste of desulfurizer and the maintenance cost of the system. At the same time, the reliability and safety of the conveying system have been significantly improved, providing a strong guarantee for the stable operation of the incinerator. This design is not only suitable for in-furnace dry desulfurization, but also can provide beneficial reference and reference for other similar material conveying and distribution systems.

[0051] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A five-pipeline conveying system for in-furnace dry desulfurization, used for uniformly injecting desulfurizing agent into the incinerator from the silo (3), characterized in that: The application relates to a material main conveying pipe (6) provided with a gas conveying acceleration chamber (5) at one end and a five-branch pipe assembly at the other end, wherein the material inlet of the gas conveying acceleration chamber (5) is connected with a material bin (3), and the gas inlet of the gas conveying acceleration chamber (5) is connected with a Roots blower (1) through a gas pipeline (2). The five-branch pipe assembly comprises a main pipe (8) and branch pipes (10), one end of the main pipe (8) is connected with the material main conveying pipe (6), and the other end of the main pipe (8) is provided with a blanking cap (9). The branch pipes (10) are equidistantly distributed on the main pipe (8) and are composed of straight pipe sections and elbow pipe sections, the straight pipe sections are communicated with the main pipe (8), the central axes of the straight pipe sections are arranged at an angle with the central axis of the main pipe (8), and the elbow pipe sections are connected with branch pipe flanges (11).

2. The one-to-five pipeline delivery system for furnace dry desulphurization according to claim 1, characterized in that: The application further comprises cleaning pipes (12) which are coaxially arranged with the branch pipes (10) and are arranged on both sides of the main pipe (8). One end of the cleaning pipe (12) is communicated with the main pipe (8), and the other end of the cleaning pipe (12) is provided with a cleaning pipe nut (13).

3. The one-to-five duct conveying system for furnace dry desulfurization according to claim 1, characterized in that: The included angle alpha between the central axis of the straight pipe section and the central axis of the main pipe (8) is 10-30 degrees.

4. The one-to-five duct conveying system for furnace dry desulfurization according to claim 1, characterized in that: A screw feeder (4) is arranged between the material bin (3) and the gas conveying acceleration chamber (5).

5. The one-to-five duct conveying system for furnace dry desulfurization according to claim 1, characterized in that: A main pipe flange (7) is arranged between the material main conveying pipe (6) and the main pipe (8).

6. The one-to-five duct conveying system for furnace dry desulfurization according to claim 2, characterized in that: The cleaning pipe (12) is a straight pipe.

7. The one-to-five duct conveying system for furnace dry desulfurization according to claim 4, characterized in that: The screw feeder (4) is arranged above the gas conveying acceleration chamber.

8. The one-to-five duct conveying system for in-furnace dry desulfurization according to claim 4, characterized in that: A pressure gauge (14) is arranged on the gas pipeline (2) to detect the pipeline pressure.

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