Low-carbon combustion clean type industrial boiler

Abstract

The utility model provides a low-carbon combustion clean type industrial boiler, which relates to the technical field of industrial boiler equipment and comprises a boiler body, a boiler heating mechanism and a steam drying mechanism. The boiler body comprises a corrugated boiler furnace and a heat insulation outer container, the corrugated boiler furnace is located in the heat insulation outer container, a safety valve and a steam release pipe are arranged at the top of the heat insulation outer container, and the tail end of the steam release pipe communicates with the steam drying mechanism; the fuel preheating elbow is additionally arranged on the oil way connecting channel between the fuel tank and the combustor, residual heat in the front smoke box is used for preheating fuel oil, viscosity is reduced, the problem that the fuel oil combustion efficiency is low due to the fact that liquid fuel is poor in low-temperature fluidity and poor in atomization effect is solved, and the purposes of saving energy and reducing consumption are achieved. The boiler burner solves the problem that an existing boiler burner is not smooth in injection when thick liquid fuel is burnt, and consequently burning is not sufficient.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial boiler equipment, and more specifically, it relates to a low-carbon combustion clean industrial boiler. Background Technology

[0002] Industrial boilers are core equipment used in industrial production to provide heat energy. They heat water or other working fluids into steam, hot water, or thermal oil through fuel combustion or other energy conversion methods, and are widely used in chemical, power generation, heating, food processing and other fields. Their main function is to provide power steam for the production process or to meet the process heating requirements through heat exchange. With the increasing requirements for energy conservation and environmental protection, modern industrial boilers pay more attention to optimizing thermal efficiency and reducing pollutant emissions. By equipping them with high-efficiency dust removal, desulfurization and denitrification devices, and adopting technologies such as frequency conversion control and waste heat recovery, they can achieve low carbon emissions and efficient energy utilization while ensuring stable heating, becoming an important support for green development in the industrial sector.

[0003] Currently, some boiler burners experience poor fuel injection when burning viscous liquid fuels due to high fuel viscosity, poor atomization, or nozzle blockage. This not only leads to incomplete combustion and energy waste but also increases pollutant emissions, affecting boiler operating efficiency and environmental performance. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a low-carbon, clean-burning industrial boiler to solve the problem of incomplete combustion caused by poor injection of viscous liquid fuels in existing boiler burners.

[0005] This utility model provides a low-carbon, clean-combustion industrial boiler, achieved through the following specific technical means:

[0006] A low-carbon, clean-combustion industrial boiler includes a boiler body, a boiler heating mechanism, and a steam drying mechanism. The boiler body includes a corrugated furnace liner and an insulated outer liner. The corrugated furnace liner is located inside the insulated outer liner. A safety valve and a steam release pipe are installed at the top of the insulated outer liner, and the end of the steam release pipe is connected to the steam drying mechanism. The two ends of the corrugated furnace liner are respectively connected to a front tube sheet and a front combustion chamber tube sheet. Several second-pass flue pipes are connected between the front tube sheet and the front combustion chamber tube sheet. A combustion chamber shell is installed outside the front combustion chamber tube sheet, and an inspection port pipe is connected to the combustion chamber shell. The insulated outer liner is equipped with a front smoke box and a rear smoke box at both ends, and several third-pass smoke pipes connect the front smoke box and the rear smoke box; the inspection port pipe passes through the rear smoke box, and its end is located on the outside and is equipped with an inspection door; the bottom of the insulated outer liner is supported by a base bracket; an economizer is installed on the top of the rear smoke box; a drain valve is installed at the bottom of the boiler body; the steam drying mechanism includes a steam valve and a steam pipe; the steam release pipe is connected to the steam pipe through the steam valve, and the other end of the steam pipe is connected to the condenser tank from above. The bottom of the condenser tank is supported by a support leg, and the top is connected to a pressure output pipe.

[0007] Furthermore, the boiler heating mechanism includes a fuel tank, an oil pump connected to the fuel tank, and the oil pump connected to the fuel preheating bend via an oil delivery pipe. The fuel preheating bend is located inside the front smoke box and is arranged in a Z-shape. The other end is connected to the burner via a connecting pipe. The heating end of the burner head is connected to the corrugated furnace liner via a heat-resistant pipe, which passes through the front smoke box.

[0008] Furthermore, the steam drying mechanism also includes a square heat dissipation pool, with a water pump pipe inserted through the side wall of the heat dissipation pool. A sealing structure is provided at the penetration part, and a filter head is installed at one end of the water pump pipe that extends into the heat dissipation pool, while the other end is connected to a water pump.

[0009] Furthermore, the water pump is connected to the condenser ring pipe through the water inlet pipe. The condenser ring pipe is spirally wrapped around the outside of the condenser tank, and the other end is connected to the return pipe. The condenser ring pipe is covered with a heat insulation cover, which is welded and fixed to the condenser tank.

[0010] Furthermore, a water supply pipe runs through one side of the condenser tank, and a spiral water supply preheating ring pipe is arranged inside. One end of the water supply preheating ring pipe is connected to the water supply pipe, and the other end is connected to the water inlet pipe. The other end of the water inlet pipe is connected to the heat-insulating outer liner.

[0011] Furthermore, a drain pipe is connected to the bottom of the condenser, and a solenoid valve is installed on the drain pipe.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model adds a fuel preheating bend to the oil circuit connection channel between the fuel tank and the burner, and uses the residual heat in the front smoke box to preheat the fuel oil and reduce its viscosity. This solves the problem of poor low-temperature fluidity and deteriorated atomization effect of liquid fuels (such as heavy oil), which leads to low fuel combustion efficiency, and achieves the purpose of energy saving and consumption reduction.

[0014] 2. This utility model achieves low-energy dehumidification by setting up a condenser tank, which can prevent water hammer and pipe bursts and inhibit corrosion failure. The system resistance and saturation curve constraints prevent the pressure drop from returning to zero, but it can be controlled within a safe window. The controllable pressure drop is used to eliminate uncontrollable risks. The efficiency gain and risk avoidance brought by the drying steam far outweigh the cost of pressure loss.

[0015] 3. This utility model utilizes the heat generated by the sublimation of water vapor. A large amount of heat is released during the sublimation process of water vapor. This heat can be used to preheat the boiler feedwater. Through thermodynamic optimization, the system-level energy efficiency is improved. Under the same steam output, the heat required by the fuel is reduced (the difference between the total steam enthalpy and the feedwater enthalpy) and the fuel demand is reduced, thereby reducing fuel demand and pollution emissions. Attached Figure Description

[0016] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0017] Figure 2 This is the second schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the boiler body of this utility model.

[0019] Figure 4 This is one of the structural schematic diagrams of the steam drying mechanism of this utility model.

[0020] Figure 5 This is the second schematic diagram of the steam drying mechanism of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 100. Boiler body;

[0023] 101. Corrugated furnace liner; 102. Front tube sheet; 103. Front combustion chamber tube sheet; 104. Second pass flue; 105. Combustion chamber shell; 106. Inspection port pipe; 107. Insulated outer liner; 108. Third pass flue; 109. Front smoke box; 110. Rear smoke box; 111. Inspection door; 112. Base support; 113. Safety valve; 114. Steam release pipe; 115. Economizer; 116. Drain valve; 117. Heat-resistant tube;

[0024] 200. Boiler heating mechanism;

[0025] 201. Fuel tank; 202. Oil pump; 203. Oil delivery pipe; 204. Fuel preheating bend; 205. Connecting pipe; 206. Burner;

[0026] 300. Steam drying mechanism;

[0027] 301. Steam valve; 302. Steam pipe; 303. Condensate tank; 304. Support leg; 305. Pressure output pipe; 306. Heat dissipation tank; 307. Water pumping pipe; 308. Filter head; 309. Water pump; 310. Water supply pipe; 311. Condensate loop pipe; 312. Return pipe; 313. Insulation cover; 314. Water supply pipe; 315. Water supply preheating loop pipe; 316. Water inlet pipe; 317. Drain pipe; 318. Solenoid valve. Detailed Implementation

[0028] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0029] Example:

[0030] As attached Figure 1 To be continued Figure 5 As shown:

[0031] This utility model provides a low-carbon, clean-combustion industrial boiler, including a boiler body 100, a boiler heating mechanism 200, and a steam drying mechanism 300. The boiler body 100 includes a corrugated furnace liner 101 and an insulated outer liner 107. The corrugated furnace liner 101 is located inside the insulated outer liner 107. A safety valve 113 and a steam release pipe 114 are provided at the top of the insulated outer liner 107. The end of the steam release pipe 114 is connected to the steam drying mechanism 300. The two ends of the corrugated furnace liner 101 are respectively connected to a front tube sheet 102 and a front combustion chamber tube sheet 103. A plurality of second return flue pipes 104 are connected between the front tube sheet 102 and the front combustion chamber tube sheet 103. A combustion chamber shell 105 is provided on the outside of the front combustion chamber tube sheet 103. An inspection port pipe 106 is connected to the combustion chamber shell 105. The insulated outer liner 107 has a front smoke box 109 and a rear smoke box 110 at its two ends, and several third-pass smoke pipes 108 are connected between the front smoke box 109 and the rear smoke box 110. The inspection port pipe 106 passes through the rear smoke box 110, and its end is located on the outside and is provided with an inspection door 111. The bottom of the insulated outer liner 107 is supported by a base bracket 112. An economizer 115 is provided on the top of the rear smoke box 110. A drain valve 116 is provided on the bottom of the boiler body 100. The steam drying mechanism 300 includes a steam valve 301 and a steam pipe 302. The steam release pipe 114 is connected to the steam pipe 302 through the steam valve 301. The other end of the steam pipe 302 is connected to the condenser 303 from the top. The bottom of the condenser 303 is supported by a support leg 304, and the top is connected to a pressure output pipe 305.

[0032] Among them, such as Figure 1 and Figure 3 As shown, the boiler heating mechanism 200 includes a fuel tank 201, an oil pump 202 connected to the fuel tank 201, and the oil pump 202 connected to a fuel preheating bend 204 via an oil delivery pipe 203. The fuel preheating bend 204 is located inside the front smoke box 109 and is arranged in a Z-shape. The other end is connected to the burner 206 via a connecting pipe 205. The heating end of the burner 206 is connected to the corrugated furnace liner 101 via a heat-resistant pipe 117, which runs through the front smoke box 109. The fuel preheating bend 204 is added to the oil circuit connection channel between the fuel tank 201 and the burner 206 to preheat the fuel oil using the residual heat in the front smoke box 109, reducing its viscosity and solving the problem of poor low-temperature fluidity and deteriorated atomization effect of liquid fuels (such as heavy oil), which leads to low fuel combustion efficiency.

[0033] Among them, such as Figure 2 and Figure 4As shown, the steam drying mechanism 300 also includes a square heat dissipation tank 306. A water suction pipe 307 is inserted through the side wall of the heat dissipation tank 306, and a sealing structure is provided at the penetration point. A filter head 308 is installed at one end of the water suction pipe 307 that extends into the heat dissipation tank 306, and the other end is connected to a water pump 309. The water pump 309 is connected to a condensing ring pipe 311 through a water inlet pipe 310. The condensing ring pipe 311 is spirally wrapped around the outside of the condensing tank 303, and the other end is connected to a return pipe 312. A heat insulation cover 313 is provided around the outer periphery of the condensing ring pipe 311, and the heat insulation cover 313 is welded and fixed to the condensing tank 303. A certain amount of low-temperature clean water is filled into pool 306. The water pump 309 is started to draw water out, and impurities in the water are filtered out through filter head 308. The water flows around in the condenser ring pipe 311 to cool the condenser tank 303. After the condenser tank 303 is cooled, the water with a relatively higher temperature flows into the heat dissipation pool 306 through return pipe 312 for further cooling. The water vapor that enters the condenser tank 303 through steam pipe 302 condenses into condensate and remains inside the condenser tank 303. The relatively dry high-pressure gas after condensation is transported through pressure output pipe 305 to perform mechanical work on the outside.

[0034] Among them, such as Figure 4 As shown, a feedwater pipe 314 runs through one side of the condenser 303, and a spiral feedwater preheating ring pipe 315 is arranged inside. One end of the feedwater preheating ring pipe 315 is connected to the feedwater pipe 314, and the other end is connected to the inlet pipe 316. The other end of the inlet pipe 316 is connected to the heat-insulating outer shell 107. A large amount of heat is released during the sublimation of water vapor. This heat can be used to preheat the boiler feedwater. Through thermodynamic optimization, the system-level energy efficiency is improved. Under the same steam output, the heat required by the fuel is reduced (the difference between the total steam enthalpy and the feedwater enthalpy) and the difference is reduced, thereby reducing fuel demand and reducing pollution emissions.

[0035] Among them, such as Figure 5 As shown, a drain pipe 317 is connected to the bottom of the condenser tank 303, and a solenoid valve 318 is installed on the drain pipe 317. The steam valve 301 is closed briefly at regular intervals, and at the same time, the solenoid valve 318 is opened briefly to drain the condensate water retained in the condenser tank 303 into the heat dissipation pool 306. After the drainage is completed, the steam valve 301 returns to its initial open state. The periodic linkage of the valves ensures that the condensate water is discharged in time and maintains the heat exchange efficiency of the system.

[0036] The specific usage and function of this embodiment are as follows:

[0037] In this invention, the high-temperature, high-pressure steam generated by the boiler body 100 is transported to the condenser 303 through the steam release pipe 114, steam valve 301, and steam pipe 302. A certain amount of low-temperature clean water is filled into the heat dissipation pool 306, and the water pump 309 is started to extract it. Impurities in the water are filtered out through the filter head 308. The water flows around in the condensation ring pipe 311 to cool the condenser 303. After the condenser 303 is cooled, the water with a relatively higher temperature flows back into the heat dissipation pool 306 through the return pipe 312 for further cooling. The steam entering the condenser 303 through the steam pipe 302 condenses upon cooling, turning into condensate. The condensate remains inside the condenser 303, while the relatively dry high-pressure gas after condensation is delivered through the pressure output pipe 305 to perform mechanical work on the outside. A large amount of heat is released during the sublimation of water vapor, which can be used to preheat the boiler feedwater, achieving a leap in system-level energy efficiency through thermodynamic optimization. The steam valve 301 is periodically and briefly closed, while the solenoid valve 318 is simultaneously and briefly opened to drain the condensate retained in the condenser 303 into the heat dissipation pool 306. After drainage is completed, the steam valve 301 returns to its initial open state. The periodic linkage of the valves ensures timely discharge of condensate and maintains the system's heat exchange efficiency.

[0038] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A low-carbon, clean-combustion industrial boiler, comprising a boiler body (100), a boiler heating mechanism (200), and a steam drying mechanism (300); the boiler body (100) comprises a corrugated furnace liner (101) and an insulated outer liner (107), the corrugated furnace liner (101) being located inside the insulated outer liner (107), and a safety valve (113) and a steam release pipe (114) being provided on the top of the insulated outer liner (107), characterized in that: The steam release pipe (114) is connected to the steam drying mechanism (300) at its end; the corrugated furnace liner (101) is connected to the front tube sheet (102) and the front combustion chamber tube sheet (103) at both ends respectively, and a number of second-pass flue pipes (104) are connected between the front tube sheet (102) and the front combustion chamber tube sheet (103), and a combustion chamber shell (105) is provided on the outside of the front combustion chamber tube sheet (103), and an inspection port pipe (106) is connected to the combustion chamber shell (105); the heat-insulating outer liner (107) is provided with a front smoke box (109) and a rear smoke box (110) at both ends respectively, and a number of third-pass flue pipes (108) are connected between the front smoke box (109) and the rear smoke box (110); the inspection port pipe (106) is connected to the steam drying mechanism (300) at its end; the corrugated furnace liner (101) is connected to the front tube sheet (102) and the front combustion chamber tube sheet (103) at its end respectively, and a number of third-pass flue pipes (108) are connected between the front smoke box (109) and the rear smoke box (110); the inspection port pipe (106) is connected to the steam drying mechanism (300) at its end respectively, and the steam drying mechanism (30 ... 06) The rear smoke box (110) is penetrated, and its end is located on the outside and is provided with an inspection door (111); the bottom of the heat-insulating outer liner (107) is supported by a base bracket (112); the top of the rear smoke box (110) is provided with an economizer (115); the bottom of the boiler body (100) is provided with a drain valve (116); the steam drying mechanism (300) includes a steam valve (301) and a steam pipe (302); the steam release pipe (114) is connected to the steam pipe (302) through the steam valve (301), and the other end of the steam pipe (302) is connected to the condenser (303) from above. The bottom of the condenser (303) is supported by a support leg (304), and the top is connected to a pressure output pipe (305).

2. The low-carbon, clean-combustion industrial boiler as described in claim 1, characterized in that: The boiler heating mechanism (200) includes a fuel tank (201), an oil pump (202) is connected to the fuel tank (201), the oil pump (202) is connected to the fuel preheating bend (204) through the oil delivery pipe (203), the fuel preheating bend (204) is located in the front smoke box (109) and is arranged in a zigzag bend, and the other end is connected to the burner (206) through the connecting pipe (205). The heating end of the burner (206) head is connected to the corrugated furnace liner (101) through the heat-resistant pipe (117), and the heat-resistant pipe (117) passes through the front smoke box (109).

3. The low-carbon, clean-combustion industrial boiler as described in claim 1, characterized in that: The steam drying mechanism (300) also includes a square heat dissipation pool (306), with a water pump (307) inserted through the side wall of the heat dissipation pool (306). A sealing structure is provided at the penetration part. A filter head (308) is installed at one end of the water pump (307) that extends into the heat dissipation pool (306), and the other end is connected to a water pump (309).

4. A low-carbon, clean-combustion industrial boiler as described in claim 3, characterized in that: The water pump (309) is connected to the condenser ring pipe (311) through the water inlet pipe (310). The condenser ring pipe (311) is spirally wrapped around the outside of the condenser tank (303), and the other end is connected to the return pipe (312). The condenser ring pipe (311) is covered with a heat insulation cover (313), which is welded and fixed on the condenser tank (303).

5. A low-carbon, clean-combustion industrial boiler as described in claim 1, characterized in that: A water supply pipe (314) runs through one side of the condenser (303), and a spiral water supply preheating ring pipe (315) is arranged inside. One end of the water supply preheating ring pipe (315) is connected to the water supply pipe (314), and the other end is connected to the water inlet pipe (316). The other end of the water inlet pipe (316) is connected to the heat-insulating outer liner (107).

6. A low-carbon, clean-combustion industrial boiler as described in claim 1, characterized in that: The bottom of the condenser (303) is connected to a drain pipe (317), and a solenoid valve (318) is installed on the drain pipe (317).

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