Process combustion furnace waste heat utilization device

Abstract

The utility model provides a waste heat utilization device of a process combustion furnace, which belongs to the technical field of environmental protection and comprises a heat preservation cylinder and a circulation assembly arranged on the inner wall of the heat preservation cylinder, and the circulation assembly comprises a mounting cylinder, a collecting shell, a heat conduction frame, a heat conduction plate, a supply pipe, a rotating table, a scraper, a gas guide pipe, a circulation pipe, a soot blowing pipe and a lifting assembly. The mounting cylinder is embedded in the inner wall of the heat preservation cylinder, the collecting shell is embedded in the bottom of the inner wall of the mounting cylinder, the heat conduction frame is slidably embedded in the inner wall of the mounting cylinder, and the heat conduction plate is fixedly arranged on the outer wall of the heat conduction frame. The design of a scraper and a lifting assembly effectively removes accumulated dust of the heat conducting plate and improves the heat transfer efficiency. A sealing plate is matched with a limiting ring, it is guaranteed that no waste gas leaks when the system operates, a booster pump supplies waste gas, the stability and flexibility of the system are enhanced, the overall structure is compact, and maintenance is easy. The waste heat utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of environmental protection technology, more particularly to a process combustion furnace waste heat utilization device. BACKGROUND

[0002] Process combustion furnace (also commonly referred to as process furnace) refers to the equipment used for smelting, quenching, annealing and other heating treatment in industrial production process. The following is a detailed introduction to the process combustion furnace: high temperature control: process furnace requires higher temperature control capability to ensure accurate temperature parameter adjustment during heating process. Diversified heating mode: according to different production needs, process furnace may use electric heating, gas heating, electric arc heating, laser heating and other ways. Complex structure: process furnace is mainly composed of furnace body, heating source, temperature control instrument and other components, with relatively complex structure.

[0003] Ash source: waste gas often contains a certain amount of solid particles or fly ash. These particles may deposit when passing through the heating surface (such as heat conduction plate) of waste heat utilization device. Ash adhesion impact: ash adhering to heat conduction plate will form an insulating layer, hindering heat exchange between waste gas and heat conduction plate, resulting in reduced heat exchange efficiency. With the accumulation of ash, the heat transfer performance of heat conduction plate will gradually decrease, significantly reducing the waste heat recovery efficiency. Ash accumulation may also cause corrosion of heating surface pipe wall, posing a threat to the safe operation of equipment. Consequences of reduced heat exchange efficiency: reduced waste heat recovery, reduced economic efficiency and energy efficiency of waste heat utilization device, increased exhaust gas temperature, increased difficulty and cost of flue gas treatment, reduced equipment performance, which may require more frequent maintenance and cleaning, increasing operation and maintenance cost. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of process combustion furnace waste heat utilization device, to solve the problem proposed in background art.

[0005] A kind of process combustion furnace waste heat utilization device, comprising,

[0006] Heat preservation cylinder;

[0007] The circulating assembly is arranged at the inner wall of the heat preservation cylinder, wherein the circulating assembly comprises a mounting cylinder, a collecting shell, a heat conducting frame, a heat conducting plate, a supply pipe, a rotating table, a scraper, a gas guide pipe, a circulating pipe, a soot blowing pipe and a lifting assembly; the mounting cylinder is embedded at the inner wall of the heat preservation cylinder; the collecting shell is embedded at the bottom of the inner wall of the mounting cylinder; the heat conducting frame is slidingly embedded at the inner wall of the mounting cylinder; the heat conducting plate is fixedly arranged at the outer wall of the heat conducting frame; the supply pipe is penetratingly embedded at the inner wall of the mounting cylinder; the rotating table is rotatingly embedded at the outer wall of the supply pipe; the scraper is slidingly embedded at the outer wall of the heat conducting plate; the gas guide pipe is fixedly arranged at the top of the outer wall of the mounting cylinder; one end of the soot blowing pipe is in communication with the gas guide pipe; the other end of the soot blowing pipe is attached to the edge of the outer wall of the collecting shell; and the circulating pipe is embedded at one side of the outer wall of the heat conducting plate.

[0008] Further, the lifting assembly comprises a lifting frame, a sealing plate and a hydraulic rod.

[0009] Further, the lifting frame is slidingly embedded at the inner wall of the mounting cylinder; one end of the lifting frame is fixedly arranged at the outer wall of the scraper; and one end of the lifting frame is slidingly embedded at the opening of the outer wall of the gas guide pipe.

[0010] Further, the hydraulic rod is fixedly arranged at the bottom of the inner wall of the heat preservation cylinder; and the sealing plate is fixedly arranged at the top of the outer wall of the lifting frame.

[0011] Further, the top of the outer wall of the heat preservation cylinder is embedded with a limiting ring, and the limiting ring is matched with the sealing plate.

[0012] Further, the bottom end of the supply pipe is in communication with an external waste gas supply device through a pipeline and a booster pump.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The waste heat of the combustion furnace is efficiently utilized, the heat is transferred to the circulating pipe through the heat conducting plate, the scraper and the lifting assembly are designed to effectively remove the dust on the heat conducting plate, the heat transfer efficiency is improved, the sealing plate and the limiting ring are matched to ensure that there is no waste gas leakage during the system operation, the booster pump supplies the waste gas to enhance the stability and flexibility of the system, the overall structure is compact, easy to maintain, and the waste heat utilization rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the utility model, constitute a part of the specification and are used to explain the utility model together with embodiments of the utility model and do not constitute a limitation on the utility model. In the drawings:

[0016] Fig. 1 It is a perspective view of the utility model;

[0017] Fig. 2The utility model discloses a local half profile perspective view;

[0018] Fig. 3 The utility model discloses a heat conduction plate perspective view.

[0019] In the drawing: 1, heat preservation cylinder, 2, install cylinder, 3, collect shell, 4, heat conduction frame, 5, heat conduction plate, 6, supply pipe, 7, rotary table, 8, doctor knife, 9, gas guide pipe, 10, lifting frame, 11, sealing plate, 12, circulating pipe, 13, hydraulic pressure rod, 14, soot blowing pipe, 101, limit ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not 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 the utility model.

[0021] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Please refer to Figs. 1-3 The technical scheme provided by the embodiment is as follows:

[0024] A process combustion furnace waste heat utilization device, comprising,

[0025] The heat preservation cylinder 1;

[0026] The circulating assembly is arranged at the inner wall of the heat preservation cylinder 1, wherein the circulating assembly comprises a mounting cylinder 2, a collecting shell 3, a heat conducting frame 4, a heat conducting plate 5, a supply pipe 6, a rotating table 7, a scraper 8, a gas guide pipe 9, a circulating pipe 12, a soot blowing pipe 14 and a lifting assembly, the mounting cylinder 2 is embedded at the inner wall of the heat preservation cylinder 1, the collecting shell 3 is embedded at the bottom of the inner wall of the mounting cylinder 2, the heat conducting frame 4 is slidingly embedded at the inner wall of the mounting cylinder 2, the heat conducting plate 5 is fixedly arranged at the outer wall of the heat conducting frame 4, the supply pipe 6 is penetratingly embedded at the inner wall of the mounting cylinder 2, the rotating table 7 is rotatingly embedded at the outer wall of the supply pipe 6, the scraper 8 is slidingly embedded at the outer wall of the heat conducting plate 5, the gas guide pipe 9 is fixedly arranged at the top of the outer wall of the mounting cylinder 2, one end of the soot blowing pipe 14 is in communication with the gas guide pipe 9, the other end of the soot blowing pipe 14 is attached to the outer wall edge of the collecting shell 3, and the circulating pipe 12 is embedded at one side of the outer wall of the heat conducting plate 5.

[0027] In the embodiment of the utility model, the waste heat of the combustion furnace is used efficiently, the heat is transferred to the circulating pipe 12 through the heat conduction plate 5, the scraper 8 is designed with the lifting assembly, the accumulated dust on the heat conduction plate 5 is effectively removed, and the heat transfer efficiency is improved, the sealing plate 11 is matched with the limiting ring 101, the waste gas leakage is avoided during the system operation, the booster pump supplies the waste gas, and the system stability and flexibility are enhanced, the overall structure is compact, easy to maintain, and the waste heat utilization rate is improved. The heat preservation cylinder 1 maintains a certain temperature, is used for collecting and maintaining the waste heat generated by the combustion furnace, the lifting assembly (including the lifting frame 10, the sealing plate 11 and the hydraulic rod 13) is in the initial position, the lifting frame 10 drives the scraper 8 to be located at the lowest position of the heat conduction plate 5, the sealing plate 11 is located below the limiting ring 101, the supply pipe 6 is communicated with the external waste gas supply device through the booster pump, but at this time, it is not opened, when the waste gas generated by the combustion furnace needs to be used, the booster pump is started, the waste gas is introduced into the installation cylinder 2 inside through the supply pipe 6, the waste gas flows between the heat conduction plates 5, the heat is transferred to the installation cylinder 2 and the heat preservation cylinder 1 around the installation cylinder 2 through the heat conduction plate 5, the waste heat collection and utilization are realized, along with the continuous introduction of the waste gas, the heat on the heat conduction plate 5 is gradually accumulated, the heat is transferred to the circulating medium (such as water, oil and the like) in the circulating pipe 12 through the heat conduction plate 5, the circulating medium can be used for other process or heating after being heated, in the waste gas flow and heat conduction process, the dust or impurities may be accumulated on the heat conduction plate 5, the hydraulic rod 13 is started, the lifting frame 10 is pushed to rise, drives the scraper 8 to slide along the outer wall of the heat conduction plate 5, and the accumulated dust is removed, at the same time, in the lifting frame 10 rising process, the sealing plate 11 gradually contacts and seals the limiting ring 101, and the waste gas leakage is prevented, when the scraper 8 completes a round of cleaning, the soot blowing pipe 14 is started, the compressed air or steam is blown into the installation cylinder 2 inside through the air guide pipe 9, the compressed air or steam blows the remaining dust from the heat conduction plate 5 and the collection shell 3, and is discharged through the bottom of the collection shell 3, the above steps are repeated, the waste gas generated by the combustion furnace is continuously introduced into the heat preservation cylinder 1 for waste heat utilization, and the heat conduction plate 5 is kept clean through the scraper 8 and the soot blowing pipe 14, when the waste heat utilization device needs to be stopped for maintenance, the power supply of the booster pump and the soot blowing pipe 14 is closed, the lifting frame 10 is lowered to the initial position through the hydraulic rod 13, and the heat conduction plate 5, the collection shell 3 and other components are conveniently cleaned and checked.

[0028] Specifically, the lifting assembly comprises the lifting frame 10, the sealing plate 11 and the hydraulic rod 13.

[0029] In the embodiment of the utility model, the lifting assembly can ensure the stability of lifting.

[0030] Specifically, the lifting frame 10 is slidably embedded in the inner wall of the installation cylinder 2, one end of the lifting frame 10 is fixedly arranged on the outer wall of the scraper 8 on both sides, and one end of the lifting frame 10 is slidably embedded in the opening of the outer wall of the air guide pipe 9.

[0031] In the embodiment of the utility model, one end of the lifting frame 10 is slidably embedded in the opening of the outer wall of the air guide pipe 9, so that the stable lifting function is ensured.

[0032] Specifically, the hydraulic rod 13 is fixedly arranged at the bottom of the inner wall of the heat preservation cylinder 1, and the sealing plate 11 is fixedly arranged at the top of the outer wall of the lifting frame 10.

[0033] In the embodiment of the utility model, the sealing plate 11 is fixedly arranged at the top of the outer wall of the lifting frame 10, so that the stable sealing is ensured.

[0034] Specifically, the top of the outer wall of the heat preservation cylinder 1 is embedded with a limiting ring 101, and the limiting ring 101 is matched with the sealing plate 11.

[0035] In the embodiment of the utility model, the limiting ring 101 is matched with the sealing plate 11, so that the sealing of the waste gas is ensured.

[0036] Specifically, the bottom end of the supply pipe 6 is communicated with the external waste gas supply device through a pipeline and a booster pump.

[0037] In the embodiment of the utility model, the bottom end of the supply pipe 6 is communicated with the external waste gas supply device through a pipeline and a booster pump, so that the stable supply of the waste gas is ensured.

[0038] Working principle:

[0039] The heat preservation cylinder 1 maintains a certain temperature for collecting and maintaining the waste heat generated by the combustion furnace, the lifting assembly (including the lifting frame 10, the sealing plate 11 and the hydraulic rod 13) is in the initial position, the lifting frame 10 drives the scraper 8 to be located at the lowest position of the heat conducting plate 5, the sealing plate 11 is located below the limiting ring 101, and the supply pipe 6 is in communication with the external waste gas supply device through the booster pump, but the booster pump is not started at this time, when the waste gas generated by the combustion furnace needs to be utilized, the booster pump is started to introduce the waste gas into the installation cylinder 2 through the supply pipe 6, the waste gas flows between the heat conducting plates 5, and the heat is transmitted to the installation cylinder 2 and the heat preservation cylinder 1 around the installation cylinder 2 through the heat conducting plates 5, so that the waste heat is collected and utilized, with the continuous introduction of the waste gas, the heat on the heat conducting plates 5 is gradually accumulated, the heat is transmitted to the circulating medium (such as water, oil and the like) in the circulating pipe 12 through the heat conducting plates 5, and the circulating medium can be used for other process procedures or heating after being heated, in the waste gas flow and heat conduction process, dust or impurities may be accumulated on the heat conducting plates 5, the hydraulic rod 13 is started to push the lifting frame 10 to rise, the scraper 8 is driven to slide along the outer wall of the heat conducting plate 5, and the accumulated dust is removed, at the same time, the sealing plate 11 gradually contacts and seals the limiting ring 101 in the lifting process of the lifting frame 10, so that the waste gas is prevented from leaking, when the scraper 8 completes a round of cleaning, the soot blowing pipe 14 is started, compressed air or steam is blown into the installation cylinder 2 through the air guide pipe 9, the remaining dust is blown off from the heat conducting plates 5 and the collecting shell 3, and is discharged through the bottom of the collecting shell 3, the above steps are repeated, the waste gas generated by the combustion furnace is continuously introduced into the heat preservation cylinder 1 for waste heat utilization, and the heat conducting plates 5 are kept clean through the scraper 8 and the soot blowing pipe 14, when the waste heat utilization device needs to be stopped for maintenance, the power supply of the booster pump and the soot blowing pipe 14 is turned off, the lifting frame 10 is lowered to the initial position through the hydraulic rod 13, and the heat conducting plates 5, the collecting shell 3 and the like are facilitated to be cleaned and inspected.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A waste heat recovery device for a process combustion furnace, characterized in that, include, Insulated container (1); A circulation assembly is located on the inner wall of the insulation cylinder (1), wherein: the circulation assembly includes an installation cylinder (2), a collection shell (3), a heat-conducting frame (4), a heat-conducting plate (5), a supply pipe (6), a rotating table (7), a scraper (8), an air guide pipe (9), a circulation pipe (12), a soot blowing pipe (14), and a lifting assembly. The installation cylinder (2) is embedded in the inner wall of the insulation cylinder (1), the collection shell (3) is embedded at the bottom of the inner wall of the installation cylinder (2), the heat-conducting frame (4) is slidably embedded in the inner wall of the installation cylinder (2), and the heat-conducting plate (5) is fixedly installed. At the outer wall of the heat-conducting frame (4), the supply pipe (6) is embedded in the inner wall of the mounting cylinder (2), the rotating table (7) is rotatably embedded in the outer wall of the supply pipe (6), the scraper (8) is slidably embedded in the outer wall of the heat-conducting plate (5), the air guide pipe (9) is fixedly set at the top of the outer wall of the mounting cylinder (2), one end of the soot blowing pipe (14) is connected to the air guide pipe (9), the other end of the soot blowing pipe (14) is attached to the edge of the outer wall of the collecting shell (3), and the circulation pipe (12) is embedded in one side of the outer wall of the heat-conducting plate (5).

2. The waste heat utilization device for a process combustion furnace according to claim 1, characterized in that, The lifting assembly includes a lifting frame (10), a sealing plate (11), and a hydraulic rod (13).

3. The waste heat recovery device for a process combustion furnace according to claim 2, characterized in that, The lifting frame (10) is slidably embedded in the inner wall of the mounting cylinder (2), one end of the lifting frame (10) is fixedly set on both sides of the outer wall of the scraper (8), and one end of the lifting frame (10) is slidably embedded in the outer wall opening of the air guide pipe (9).

4. The waste heat utilization device for a process combustion furnace according to claim 3, characterized in that, The hydraulic rod (13) is fixedly installed at the bottom of the inner wall of the heat preservation cylinder (1), and the sealing plate (11) is fixedly installed at the top of the outer wall of the lifting frame (10).

5. The waste heat recovery device for a process combustion furnace according to claim 4, characterized in that, A limiting ring (101) is embedded at the top of the outer wall of the heat insulation cylinder (1), and the limiting ring (101) matches the sealing plate (11).

6. The waste heat utilization device for a process combustion furnace according to claim 5, characterized in that, The bottom end of the supply pipe (6) is connected to an external exhaust gas supply device via a pipeline and a booster pump.

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