Efficient waste heat recovery device for waste incineration

Abstract

The utility model relates to the technical field of garbage incinerators, in particular to a garbage incineration waste heat efficient recovery device which comprises an incinerator, an exhaust pipe is fixedly installed on the incinerator, and a first heat exchange pipe used for heat energy exchange is wound on the outer side wall of the exhaust pipe. A second heat exchange pipe used for heat energy exchange is wound on the outer side wall of the exhaust pipe, and heat preservation pipes used for heat preservation are fixedly installed on the outer side of the first heat exchange pipe and the outer side of the second heat exchange pipe. When the garbage incinerator is used, garbage is put into the incinerator to be combusted, waste gas generated by combustion enters the first heat exchange pipe along the exhaust pipe, in the process that the waste gas in the first heat exchange pipe is exhausted, heat can be transferred into heat conduction mud, meanwhile, the heat is transferred into the second heat exchange pipe, and water flowing in the second heat exchange pipe is heated; and hot water in the second heat exchange pipe can be conveyed into heat utilization equipment, and the effect of recycling waste heat and improving the energy utilization rate is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage incinerator technical field, especially relates to a garbage incineration waste heat efficient recovery device. BACKGROUND

[0002] In the garbage disposal process, it is crucial to efficiently recycle the waste heat generated by garbage incineration. In practical applications, garbage incineration waste heat efficient recovery devices usually require the following technologies:

[0003] 1. Combustion mechanism, such as high-efficiency combustion furnace, combustion-supporting equipment, etc., which can make garbage burn fully and produce high-temperature flue gas;

[0004] 2. Heat recovery mechanism, such as waste heat boiler, heat exchanger, etc., which can collect heat from the high-temperature flue gas generated by garbage incineration;

[0005] 3. Ash removal mechanism, such as ash removal device, ash conveying equipment, etc., which can clean and handle the ash produced by combustion in time.

[0006] The existing Chinese patent: a garbage incinerator, publication number: CN221548675U, includes: a shell, the inner wall of the shell is fixedly connected with an inner shell; an oxygen supply mechanism for ensuring sufficient oxygen in the garbage incinerator is arranged on one side of the shell; wherein the oxygen supply mechanism includes a circular frame fixedly connected to the inner wall of the inner shell; in this device, the negative pressure fan extracts external air and delivers it into the flow pipe, because the inner diameter of the flow pipe is larger than that of the transfer pipe, and the inner diameter of the control pipe is larger than that of the transfer pipe, the air in the flow pipe flows quickly into the control pipe through the transfer pipe, making the air in the control pipe flow quickly into the incinerator through the air inlet pipe and the air outlet pipe, ensuring sufficient oxygen in the incinerator, and the guide piece makes the flue gas and flame in the incinerator spiral upward along the spiral blade, prolonging the burning time and ensuring that the incinerator can fully burn household garbage, improving the burning effect of the garbage incinerator on household garbage.

[0007] However, during the implementation of the above technical solution, at least the following technical problems were found: the garbage incineration device above directly discharges the flue gas generated by burning after burning garbage, the discharged flue gas contains a large amount of heat, causing energy waste. UTILITY MODEL CONTENT

[0008] In view of the deficiencies of the prior art, the utility model provides a garbage incineration waste heat efficient recovery device to solve the technical problem that the garbage incineration device above directly discharges the flue gas generated by burning after burning garbage, the discharged flue gas contains a large amount of heat, causing energy waste.

[0009] To achieve the above purpose, the utility model is realized by the following technical solutions:

[0010] The utility model provides a kind of waste incineration waste heat efficient recovery device, including incinerator, and incinerator is fixedly installed with exhaust pipe, and the outer side wall of exhaust pipe is coiled with first heat exchange pipe for heat exchange, and the outer side wall of exhaust pipe is coiled with second heat exchange pipe for heat exchange, and the outer side of first heat exchange pipe and second heat exchange pipe is fixedly installed with heat preservation pipe for heat preservation;Heat preservation pipe is filled with heat-conducting mud inside.

[0011] Preferably: the inside of exhaust pipe is filled with activated carbon.

[0012] Preferably: the inside of exhaust pipe is filled with activated carbon.

[0013] Preferably: the inside of exhaust pipe is filled with activated carbon.

[0014] Preferably: the inside of exhaust pipe is filled with activated carbon.

[0015] Preferably: the inside of exhaust pipe is filled with activated carbon.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] I. In use, the garbage is put into the inside of incinerator for burning, the waste gas produced by burning will be discharged along the exhaust pipe, and then enter the first heat exchange pipe along the exhaust pipe, the water supply mechanism will send water into the second heat exchange pipe, the heat will be transferred to the heat-conducting mud in the process of waste gas discharge in the first heat exchange pipe, and the heat will be transferred to the second heat exchange pipe, the water flowing in the second heat exchange pipe is heated, and the hot water in the second heat exchange pipe is delivered to the heat-using equipment, achieving the effect of recycling waste heat and improving energy utilization rate.

[0018] II. In the combustion process, the discharged waste gas will be preliminarily filtered by activated carbon in the exhaust pipe, and the ash produced during combustion is left in the inside of incinerator, at this time, the rotary ash disc can make the incinerator produce gap, and the ash produced by combustion will fall along the gap to the bottom end of incinerator and enter the ash pipe, and then the driving mechanism is started to drive the screw feeder to rotate clockwise, and the screw feeder will send the ash falling into the ash pipe out, achieving the effect of facilitating ash removal and continuous combustion. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following is the preferred embodiment of the utility model and the detailed description of the drawings.

[0020] Figure 1 It is the structure diagram of incinerator of the utility model;

[0021] Figure 2 It is the section structure diagram of the heat preservation pipe of the utility model;

[0022] Figure 3 It is the explosion structure diagram of the heat exchange pipe of the utility model;

[0023] Figure 4 It is the structure diagram of the ash discharge tray of the utility model;

[0024] Figure 5 It is the section structure diagram of the incinerator of the utility model.

[0025] Legend: 1, incinerator; 2, exhaust pipe; 3, first heat exchange pipe; 4, second heat exchange pipe; 5, heat preservation pipe; 6, activated carbon; 7, ash discharge tray; 8, ash discharge pipe; 9, spiral feeding rod; 11, support frame. DETAILED DESCRIPTION

[0026] The garbage incineration waste heat efficient recovery device provided by the embodiment of the application effectively solves the technical problem that the garbage incinerator directly discharges the flue gas generated by combustion after burning garbage, the discharged flue gas contains a large amount of heat, and energy is wasted. When in use, the garbage is put into the inside of the incinerator for combustion, the waste gas generated by combustion will be discharged along the exhaust pipe, then enter the first heat exchange pipe along the exhaust pipe, the water supply mechanism will send water into the second heat exchange pipe, the heat will be transferred to the heat-conducting mud in the process of waste gas discharge in the first heat exchange pipe, and the heat will be transferred to the second heat exchange pipe at the same time, so that the water flowing in the second heat exchange pipe is heated, the hot water in the second heat exchange pipe will be delivered to the heat-using equipment, so that the effect of recycling waste heat and improving energy utilization rate is achieved. In the combustion process, the waste gas discharged will be preliminarily filtered by the activated carbon in the exhaust pipe, and the ash generated during combustion is left in the inside of the incinerator. At this time, the rotating ash discharge tray can make a gap in the incinerator, and the ash generated by combustion will fall along the gap to the bottom end of the incinerator and enter the ash discharge pipe, then the driving mechanism is started to drive the spiral feeding rod to rotate clockwise, the spiral feeding rod will send the ash falling into the ash discharge pipe out, so that the effect that the ash can be continuously discharged and combustion can be continuously carried out is achieved.

[0027] EMBODIMENT

[0028] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the technical scheme in the embodiment of the application effectively solves the technical problem that the garbage incinerator directly discharges the flue gas generated by combustion after burning garbage, the discharged flue gas contains a large amount of heat, and energy is wasted. The general idea is as follows:

[0029] In view of the problems in the prior art, the utility model provides a kind of garbage incineration waste heat efficient recovery device, including incinerator 1, and incinerator 1 is fixedly installed with exhaust pipe 2, and the outer side wall of exhaust pipe 2 is coiled with first heat exchange tube 3 for heat exchange.

[0030] The outer side of first heat exchange tube 3 and second heat exchange tube 4 is fixedly installed with heat preservation pipe 5 for heat preservation, and the inside of heat preservation pipe 5 is filled with heat-conducting mud, and the inside of exhaust pipe 2 is filled with activated carbon 6.

[0031] Ash disc 7 is rotatably installed in the inside of incinerator 1, ash pipe 8 for discharging ash is fixedly installed at the bottom end of incinerator 1, screw feeding rod 9 is rotatably installed in the inside of ash pipe 8, and support frame 11 for supporting is fixedly installed at the bottom end of incinerator 1.

[0032] Incinerator 1: it is the main cavity of garbage incineration, for accommodating garbage to burn;

[0033] Exhaust pipe 2: for guiding the exhaust gas generated by combustion to discharge, preliminary treatment or heat exchange is carried out therein;

[0034] First heat exchange tube 3: for heat exchange with waste gas, heat in waste gas is transferred out, and spiral shape can greatly prolong the time of flue gas discharge;

[0035] Second heat exchange tube 4: receives heat transferred from first heat exchange tube 3, heats water flowing therein, and delivers hot water to heat equipment, and is spiral, can greatly prolong the time of water flow heat absorption;

[0036] Heat preservation pipe 5: plays the role of heat preservation, reduces heat loss, and the heat-conducting mud filled in the inside helps heat transfer;

[0037] Activated carbon 6: preliminary filtration is carried out on the exhaust gas discharged in the combustion process;

[0038] Ash disc 7: gap is generated in incinerator 1 by rotation, so that the ash of combustion falls;

[0039] Ash pipe 8: for collecting and discharging the ash generated by combustion;

[0040] Screw feeding rod 9: clockwise rotation is carried out under the drive of driving mechanism, and the ash falling into ash pipe 8 is sent out;

[0041] Support frame 11: plays the role of supporting the whole device.

[0042] Working principle:

[0043] The first step, during installation, involves connecting the first heat exchange pipe 3 to the waste gas treatment device, the second heat exchange pipe 4 to heat-using equipment such as the water supply device and heating device, and the ash discharge pipe 8 to the drive mechanism. During use, waste is placed inside the incinerator 1 for combustion. The waste gas produced during combustion is discharged through the exhaust pipe 2 and then enters the first heat exchange pipe 3. The water supply mechanism delivers water into the second heat exchange pipe 4. During the discharge of waste gas from the first heat exchange pipe 3, heat is transferred to the heat-conducting mud, and simultaneously to the second heat exchange pipe 4, heating the water flowing within it. The hot water in the second heat exchange pipe 4 is then transported to the heat-using equipment, achieving the effect of recovering waste heat and improving energy utilization.

[0044] In the second step, during the combustion process, the exhaust gas will be initially filtered by the activated carbon 6 in the exhaust pipe 2. The ash produced during combustion will remain inside the incinerator 1. At this time, rotating the ash discharge plate 7 will create gaps in the incinerator 1. The burning ash will fall along the gaps to the bottom of the incinerator 1 and enter the ash discharge pipe 8. Then, the drive mechanism will start and drive the screw feeder 9 to rotate clockwise. The screw feeder 9 will send out the ash that has fallen into the ash discharge pipe 8, achieving the effect of facilitating ash discharge and enabling continuous combustion.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A high-efficiency waste heat recovery device for waste incineration, comprising an incinerator (1), characterized in that, An exhaust pipe (2) is fixedly installed on the incinerator (1). A first heat exchange pipe (3) for heat exchange is coiled around the outer wall of the exhaust pipe (2). A second heat exchange pipe (4) for heat exchange is coiled around the outer wall of the exhaust pipe (2). An insulation pipe (5) for heat preservation is fixedly installed on the outer side of the first heat exchange pipe (3) and the second heat exchange pipe (4). The interior of the insulation pipe (5) is filled with heat-conducting mud.

2. The waste incineration waste heat recovery device as described in claim 1, characterized in that, The interior of the exhaust pipe (2) is filled with activated carbon (6).

3. The waste incineration waste heat recovery device as described in claim 1, characterized in that, The incinerator (1) is equipped with an ash discharge plate (7) that rotates inside.

4. The waste incineration waste heat recovery device as described in claim 1, characterized in that, The bottom end of the incinerator (1) is fixedly equipped with an ash discharge pipe (8) for ash discharge.

5. The waste incineration waste heat recovery device as described in claim 4, characterized in that, The ash discharge pipe (8) is internally fitted with a spiral feeding rod (9).

6. The waste incineration waste heat recovery device as described in claim 1, characterized in that, The bottom end of the incinerator (1) is fixedly equipped with a support frame (11) for support.

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