Biomass steam boiler with waste heat recovery device

Abstract

The biomass steam boiler with the waste heat recovery device comprises a biomass steam boiler body, one end of the upper surface of the biomass steam boiler body is communicated with an exhaust pipe, one end of the center in the upper surface of the biomass steam boiler body is communicated with a smoke outlet pipe, one end of the smoke outlet pipe is communicated with a waste heat filtering assembly, and the waste heat filtering assembly is communicated with a waste heat recovery device. The other end of the waste heat filtering assembly is connected with a smoke inlet pipeline, and the other end of the smoke inlet pipeline penetrates through the upper portion of the waste heat recovery assembly and is connected into the waste heat recovery assembly in a welded mode. According to the biomass steam boiler, waste heat is recycled and effectively utilized in time, when heated water is reused, the switch valve is opened to enable the heated water to flow into the biomass steam boiler body, so that the situation that the biomass steam boiler body needs to consume extra fuel to heat cold water is reduced, and recycled waste heat smoke is exhausted from the smoke exhaust pipe.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steam boiler waste heat recovery equipment, and specifically relates to a biomass steam boiler with a waste heat recovery device. BACKGROUND

[0002] The biomass steam boiler is a kind of biomass boiler, and is a steam boiler using biomass fuel as raw material.

[0003] The patent with the publication number CN217031151U discloses a steam boiler with waste heat recovery and utilization, and specifically relates to the technical field of steam boilers, and comprises a combustion box, one side of the combustion box is provided with a burner, the top of the combustion box is fixedly provided with an outer box, the outer end of the outer box is communicated with an outlet pipe, one end of the outlet pipe is communicated with a smoke outlet pipe, one end of the smoke outlet pipe is provided with a filtering structure, one side of the combustion box is provided with a recovery box, the top of the recovery box is fixedly provided with an air extraction pump.

[0004] The above structure recovers waste heat and stores it for use next time, and the storage process cannot recover and utilize the heat in time and effectively, resulting in more heat waste, which is not conducive to the waste heat recovery and utilization in the whole production process, and the waste heat recovery and utilization rate is low; meanwhile, the smoke gas is not filtered completely, and internal scale is prone to occur in the recovery box during recovery. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a biomass steam boiler with a waste heat recovery device to solve the technical defects of low waste heat recovery and utilization rate and incomplete smoke gas filtration of existing equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The biomass steam boiler with a waste heat recovery device comprises a biomass steam boiler body, a steam discharge pipe is communicated with one end of the upper surface of the biomass steam boiler body, a smoke outlet pipe is communicated with one end of the internal center of the upper surface of the biomass steam boiler body, a waste heat filtering assembly is communicated with one end of the smoke outlet pipe, an air inlet pipe is connected to the other end of the waste heat filtering assembly and penetrates through the upper part of the waste heat recovery assembly and is welded to the inside of the waste heat recovery assembly.

[0008] One side of the biomass steam boiler body is provided with an air inlet, the other end of the biomass steam boiler body is provided with a water inlet pipe, and a switch valve is installed at one end of the water inlet pipe.

[0009] As a preferred scheme of the utility model, the waste heat filtering assembly includes an upper half block, the upper half block is fixedly connected between the smoke inlet pipeline and the smoke outlet pipeline, a semicircular pipe is fixedly installed on the lower surface of the upper half block, and the semicircular pipe is communicated with one end of the smoke inlet pipeline and the smoke outlet pipeline.

[0010] As a further scheme of the utility model, a water spraying pipeline is arranged in the upper half block, a water pump is connected to the middle section of the water spraying pipeline, and a plurality of spray heads are communicated with the upper end of the semicircular pipe.

[0011] As a further scheme of the utility model, a water collecting groove is arranged at one end of the lower surface of the inner wall of the semicircular pipe, a hollow hole is arranged at one end of the inner wall of the water collecting groove, and a water collecting pipe is welded in the hollow hole.

[0012] As a preferred scheme of the utility model, the waste heat recovery assembly includes a recovery box, the recovery box is arranged at one side of the biomass steam boiler body, the smoke inlet pipeline is arranged in the recovery box, a through hole is arranged at one side of the recovery box, a heating water pipe is welded in the through hole, arc-shaped flow guide blocks are arranged on the inner wall of the recovery box.

[0013] As a further preferred scheme of the utility model, the heating water pipe penetrates through the inside of the recovery box, one end of the heating water pipe penetrates out from one side of the recovery box, the other end of the heating water pipe penetrates through the arc-shaped flow guide blocks in the recovery box and then penetrates out from the other side of the recovery box, a switch valve is connected to one end of the heating water pipe penetrating out of the recovery box, a plurality of heat transfer grooves are arranged on the outer surface of the heating water pipe arranged in the recovery box, and a smoke exhaust pipe is communicated with the other side of the recovery box.

[0014] Compared with the prior art, the biomass steam boiler with a waste heat recovery device has the following beneficial effects:

[0015] 1. The biomass steam boiler with a waste heat recovery device can effectively recover the waste heat generated by the boiler, and the recovered waste heat can be effectively utilized in time, so that the recovery utilization rate is high.

[0016] 2. The biomass steam boiler with a waste heat recovery device can effectively filter the recovered waste heat smoke, thereby improving the overall practicality of the equipment. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only individual cases of the embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0018] Figure 1 The structure of the embodiments of the utility model is shown in the drawings Figure One ;

[0019] Figure 2 Structure diagram of the embodiment of the present application Figure Two ;

[0020] Figure 3 Structure diagram of the waste heat treatment component in the embodiment of the present application

[0021] Figure 4 Structure diagram of the water collecting tank of the waste heat treatment component in the embodiment of the present application

[0022] Figure 5 Structure diagram of the waste heat recycling component in the embodiment of the present application

[0023] Figure 6 Structure diagram of the arc-shaped flow guide block in the embodiment of the present application

[0024] Figure 7 Structure diagram of the heat transfer groove in the embodiment of the present application

[0025] Reference signs:

[0026] 1, biomass steam boiler body; 101, exhaust pipe; 102, feeding port; 103, smoke outlet pipe; 104, water inlet pipe; 105, on-off valve;

[0027] 2, waste heat filtering component; 201, upper half block; 202, water spraying pipeline; 203, water pump; 204, spraying head; 205, semicircular pipe; 206, water collecting pipe; 207, water collecting tank;

[0028] 3, smoke inlet pipeline

[0029] 4, waste heat recycling component; 401, recycling box; 402, flue gas discharge pipe; 403, heating water pipe; 404, arc-shaped flow guide block; 405, heat transfer groove. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear and understandable, the embodiment of the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0031] In the description of the utility model embodiments, it is understood that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, and therefore cannot be understood as a limitation on the utility model embodiments.

[0032] In the description of the utility model embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, integral connection, or detachable connection, it can be the communication inside two elements, it can be directly connected, or indirectly connected through an intermediate medium, and those skilled in the art can understand the specific meaning of the above terms in the utility model embodiments according to the specific circumstances.

[0033] Referring to the accompanying Figures 1-7 As shown in the utility model embodiments, the biomass steam boiler with waste heat recovery device comprises a biomass steam boiler body 1, an exhaust pipe 101 is communicated at one end of the upper surface of the biomass steam boiler body 1, a smoke outlet pipe 103 is communicated at one end of the inner center of the upper surface of the biomass steam boiler body 1, a waste heat filtering assembly 2 is communicated at one end of the smoke outlet pipe 103, a smoke inlet pipe 3 is connected at the other end of the waste heat filtering assembly 2, and the other end of the smoke inlet pipe 3 penetrates the upper part of a waste heat recovery assembly 4 and is welded and connected in the waste heat recovery assembly 4.

[0034] One side of the biomass steam boiler body 1 is provided with a feeding port 102, and the other end of the biomass steam boiler body 1 is provided with a water inlet pipe 104, and one end of the water inlet pipe 104 is provided with a switch valve 105.

[0035] In the above technical scheme, the waste heat filtering assembly 2 can effectively filter the impurities in the waste heat flue gas, reduce the pollution of the waste heat recovery assembly 4, and at the same time, reduce the pollution degree of the flue gas discharged into the atmosphere to the environment, so as to facilitate the use of the biomass steam boiler with waste heat recovery device.

[0036] When the biomass fuel is poured into the feeding port 102, the flue gas burned by the biomass fuel flows into the smoke inlet pipe 3 through the smoke outlet pipe 103, and when flowing through the waste heat filtering assembly 2, the flowing flue gas can be filtered to remove the impurities in the flue gas, improve the accuracy during filtering, reduce the occurrence of pipeline blockage, and the filtered waste heat flue gas flows into the waste heat recovery assembly 4, which can realize the deep recovery and utilization of waste heat, improve the energy utilization efficiency, and at the same time, reduce the temperature and energy loss of the discharged flue gas.

[0037] Referring to the accompanying Figures 3 to 4As shown, the waste heat filtering assembly 2 includes an upper half block 201 fixedly connected between the smoke inlet pipe 3 and the smoke outlet pipe 103, and a semicircular pipe 205 fixedly installed on the lower surface of the upper half block 201, with the semicircular pipe 205 being communicated at both sides with one end of the smoke inlet pipe 3 and the smoke outlet pipe 103, respectively. The upper half block 201 is internally provided with a water spraying pipe 202, and the water pump 203 is connected to the middle section of the water spraying pipe 202, and a plurality of spray heads 204 are communicated at the upper end of the semicircular pipe 205. The water spraying pipe 202 at the water inlet of the water pump 203 is used to connect an external water pipe. The semicircular pipe 205 is internally provided with a water collecting groove 207 at one end of the lower surface of the inner wall, and the water collecting groove 207 is internally provided with a hollow hole, and the water collecting pipe 206 is welded in the hollow hole.

[0038] In order to improve the filtering property of the recovered waste heat, through the design of the upper half block 201 and the semicircular pipe 205, when the smoke generated by combustion is discharged from the smoke outlet pipe 103 into the waste heat filtering assembly 2, only the semicircular pipe 205 can flow, which avoids the occurrence of insufficient filtering due to smoke diffusion, so that the inflowing smoke can only flow from the semicircular pipe 205 to the smoke inlet pipe 3 communicated at the other end. By starting the water pump 203, the external water flow is flowed into the water spraying pipe 202 provided in the upper half block 201, and then the spray heads 204 are used to spray and treat the smoke flowing at the lower end. The water mist can absorb a large amount of dust, particulate matter and other impurities in the smoke, and then the impurities will be gathered on the lower surface of the inner wall of the semicircular pipe 205 under the action of gravity, and then discharged through the water collecting groove 207 and the water collecting pipe 206, so as to achieve the effects of purifying the smoke and removing the impurities, and effectively avoid the attachment of the impurities to the waste heat recovery assembly 4.

[0039] Referring to the accompanying drawings, Figures 5 to 7 As shown, the waste heat recovery assembly 4 includes a recovery tank 401 located at one side of the biomass steam boiler body 1, and the smoke inlet pipe 3 is located in the recovery tank 401. A through hole is provided at one side of the recovery tank 401, and a heating water pipe 403 is welded in the through hole. Arc-shaped flow guide blocks 404 are provided on both sides of the inner wall of the recovery tank 401. The heating water pipe 403 penetrates the inside of the recovery tank 401 as a whole, with one end penetrating out from one side of the recovery tank 401 and the other end penetrating out from the other side of the recovery tank 401 after penetrating through the arc-shaped flow guide blocks 404 in the recovery tank 401. A switch valve 105 is connected to one end penetrating out of the recovery tank 401. A plurality of heat transfer grooves 405 are provided on the outer surface of the heating water pipe 403 located in the section of the recovery tank 401. A smoke exhaust pipe 402 is communicated with the other side of the recovery tank 401.

[0040] The filtered flue gas flows into the recovery tank 401 through the flue gas inlet pipe 3, and before this, water flow is injected into the heated water pipe 403. When the waste heat flue gas enters the recovery tank 401, the arc-shaped flow guide block 404 installed on both sides of the inner wall of the recovery tank 401 and the heat transfer groove 405 provided on the outer surface of the heated water pipe 403 can increase the contact time and contact area of the flue gas and the heated water pipe 403. Under the guidance of the arc-shaped flow guide block 404, the flue gas can repeatedly wash the outer surface of the heated water pipe 403 in the recovery tank 401, so that heat can be more effectively transferred to the water in the heated water pipe 403. The heat transfer groove 405 is arranged on the outer surface of the heated water pipe 403, which can increase the contact area between the heated water pipe 403 and the flue gas, so that the situation of not being in contact does not occur, thereby realizing the recovery and timely and effective utilization of waste heat, and waste of waste heat is avoided. When the heated water needs to be used, the switch valve 105 is opened to make the water flow into the biomass steam boiler body 1, thereby reducing the amount of additional fuel consumed by the biomass steam boiler body 1 to heat cold water. The recovered waste heat flue gas is discharged from the flue gas discharge pipe 402.

[0041] In the use of the utility model embodiment, when the biomass fuel is poured into the feed inlet 102, the flue gas generated by combustion of the biomass fuel flows into the flue gas inlet pipe 3 through the flue gas outlet pipe 103. When the flue gas flows through the waste heat filtering assembly 2, only the inside of the semicircular pipe 205 can flow, so that the inflowing flue gas can only flow from the semicircular pipe 205 to the flue gas inlet pipe 3 connected at the other end. By starting the water pump 203, the external water flow flows into the water spraying pipe 202 arranged in the upper half block 201. The water spraying head 204 sprays the flue gas flowing at the lower end. The water mist can absorb a large amount of dust, particulate matter and other impurities in the flue gas. The impurities gather on the lower surface of the inner wall of the semicircular pipe 205 under the action of gravity and are discharged through the water collecting groove 207 and the water collecting pipe 206. The filtered flue gas flows into the recovery tank 401 through the flue gas inlet pipe 3. Before this, water flow is injected into the heated water pipe 403. When the waste heat flue gas enters the recovery tank 401, the arc-shaped flow guide block 404 installed on both sides of the inner wall of the recovery tank 401 and the heat transfer groove 405 provided on the outer surface of the heated water pipe 403 can increase the contact time and contact area of the flue gas and the heated water pipe 403. When the heated water needs to be used, the switch valve 105 is opened to make the water flow into the biomass steam boiler body 1, thereby reducing the amount of additional fuel consumed by the biomass steam boiler body 1 to heat cold water. The recovered waste heat flue gas is discharged from the flue gas discharge pipe 402.

[0042] The biomass steam boiler with the waste heat recovery device can effectively recover the waste heat generated by the boiler, the recovered waste heat can be effectively utilized in time, the waste heat is not wasted, and the consumption can be reduced.

[0043] The basic principles of the present application are shown and described above, and the above is only the preferred embodiment of the present application, and does not limit the present application, and the above embodiment and the description in the specification only illustrate the principles of the present application, and any modification, equivalent replacement and improvement within the spirit and scope of the present application should be included in the protection scope of the present application.

Claims

1. Biomass steam boiler with waste heat recovery device, comprising a biomass steam boiler body (1), characterized in that: The biomass steam boiler body (1) upper surface one end is communicated with exhaust pipe (101), the biomass steam boiler body (1) upper surface inside center one end is communicated with smoke outlet pipe (103), the smoke outlet pipe (103) one end is communicated with waste heat filtration subassembly (2), the waste heat filtration subassembly (2) other end is connected with the smoke inlet pipe (3), the smoke inlet pipe (3) other end penetrates the upper portion of waste heat recovery component (4) and is welded and connected in waste heat recovery component (4), wherein: The biomass steam boiler body (1) one side is equipped with the feed inlet (102), and the biomass steam boiler body (1) other end is equipped with the water inlet pipe (104), and the water inlet pipe (104) one end is installed with the on-off valve (105).

2. The biomass steam boiler with a heat recovery device according to claim 1, characterized in that: The waste heat filtration subassembly (2) includes upper half block (201), the upper half block (201) is fixedly connected between the smoke inlet pipe (3) and the smoke outlet pipe (103), the upper half block (201) lower surface is fixedly installed with semicircular pipe (205), and the semicircular pipe (205) both sides are communicated with the smoke inlet pipe (3) and the smoke outlet pipe (103) one end respectively.

3. The biomass-fired steam boiler with a heat recovery device according to claim 2, characterized in that: The upper half block (201) is equipped with water injection pipe (202) inside, the water injection pipe (202) middle section is connected with water pump (203), and the water injection pipe (202) is located at the upper end of semicircular pipe (205) and is communicated with multiple groups of spray heads (204).

4. The biomass-fired steam boiler with a heat recovery device according to claim 3, characterized in that: The semicircular pipe (205) inner wall lower surface one end is equipped with water collecting groove (207), the water collecting groove (207) inner wall one end is equipped with air hole, and the air hole is welded with water collecting pipe (206).

5. The biomass-fired steam boiler with heat recovery device according to claim 1, characterized in that: The waste heat recovery component (4) includes recovery tank (401), the recovery tank (401) is located at the one side of biomass steam boiler body (1), the smoke inlet pipe (3) is located in the recovery tank (401), the recovery tank (401) one side is equipped with through hole, the through hole is welded with heating water pipe (403), and the recovery tank (401) inner wall both sides are equipped with arc flow guide block (404).

6. The biomass-fired steam boiler with a heat recovery device according to claim 5, characterized in that: The heating water pipe (403) penetrates the inside of recovery tank (401) as a whole, one end of which is from the side of the recovery tank (401) and the other end is from the other side of the recovery tank (401) after penetrating the arc flow guide block (404) in the recovery tank (401), and one end of which is connected with the on-off valve (105), the heating water pipe (403) outer surface of the recovery tank (401) section is equipped with multiple groups of heat transfer grooves (405), and the other side of the recovery tank (401) is communicated with the flue gas discharge pipe (402).

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