CN205258607U - Adopt aluminum product oxidation heating system of biomass gasification stove - Google Patents

Abstract

The utility model discloses an aluminum material oxidation heating system adopting a biomass gasification furnace, comprising: an aluminum material oxidation pool, a heat exchange coil, a biomass gasification furnace, a burner and a primary spray heat exchange chamber. The biomass gasification furnace includes a gasification furnace body, a gasification reaction chamber, an air chamber, a fire grate, a biomass material inlet, a biomass gas outlet, and a gasification agent inlet. The primary spray heat exchange chamber includes a primary spray chamber body, a medium-temperature flue gas outlet, at least one warm water inlet connected to the outlet end of the heat exchange coil through a pipeline, and a hot water outlet connected to the inlet end of the heat exchange coil through a pipeline , a combustion cylinder and a spray plate; wherein, the combustion cylinder includes a closed end adjacent to the other end wall of the primary spray chamber body, an open end extending through a through hole of the primary spray chamber body to the outside of the primary spray heat exchange chamber, and a smoke exhaust pipe extending from the side wall of the combustion tube to the direction of the spray plate between the closed end and the open end, and the open end of the combustion tube is connected with the burner.

Description

Aluminum oxidation heating system using biomass gasifier

technical field

The utility model relates to an aluminum material processing system, in particular to an aluminum material oxidation heating system.

Background technique

Biomass gasification is a process in which the combustible part of biomass is converted into combustible gas through thermochemical reaction under high temperature conditions under the action of gasification agents such as oxygen, water vapor or hydrogen. The basic reactions of the biomass gasification process under different conditions include: C+O ₂ =CO ₂ ; CO ₂ +C=2CO; H ₂ O+C=CO+H ₂ and other chemical reaction processes. The gas components mainly include H ₂ , CH ₄ and CO, etc., and this combustible gas is usually called biomass gas. As a new type of fuel, biomass fuel has advantages different from traditional fuels. For example, the energy of biomass fuel comes from the absorption of natural CO ₂ when biomass grows, and its fixed carbon content is about 15%, which is a typical low-carbon fuels, and biomass fuels have low sulfur content, low nitrogen content, low environmental pollution, and because they are derived from agricultural and forestry waste, cyclic growth, and low cost, the development and application of biomass fuels are increasingly popular Pay attention to.

At present, biomass fuels have been used to provide heat in aluminum production, such as aluminum melting furnaces powered by biomass fuels. The aluminum oxidation tank is also a common aluminum processing equipment in the industry. It needs to soak the aluminum in the oxidation solution and heat the oxidation solution to a certain temperature, so as to meet the needs of the aluminum oxidation reaction. In the current aluminum production, a large amount of aluminum oxidation treatment is required, the energy demand is large, and the environmental pollution caused by the use of traditional fuels is serious. Therefore, how to apply biomass fuel to the production process of aluminum oxidation treatment is also an urgent need in the industry solved problem.

For example, a biomass double furnace ultra-high temperature burner provided by Chinese patent application 201310177571.8 includes: a feeding funnel, a blower, a first furnace and a second furnace; the outlet of the feeding funnel communicates with the first furnace, and the first furnace It communicates with the second furnace, and the second furnace is provided with a flame nozzle; the air outlet of the blower communicates with the first furnace and the second furnace respectively. The first furnace of the biomass double furnace ultra-high temperature burner is direct combustion, and the second furnace is gasification combustion. The first furnace can heat the flue gas to 800°C through direct combustion, and the second furnace can use the gasification function to heat the flue gas at 800°C to about 1250°C, increasing the biomass fuel and smoke. The heat of combustion of the gas is used to meet the needs of casting molten aluminum.

Another example is an aluminum melting furnace provided by Chinese patent application 201420852077.7, including an aluminum melting furnace, a combustion nozzle, a regenerator, a flue gas pipe, a distribution pipe, a smoke exhaust fan, a flue gas purifier, a combustion-supporting fan, an air pipe, and a fuel pipe , gas pipeline, high-temperature fan, biomass gasifier, and the upper end of the aluminum melting furnace are respectively provided with a flue gas pipeline and a heat accumulator, and the flue gas pipeline passes through the heat accumulator to connect with the exhaust fan, and the rear end of the exhaust fan It is connected with a flue gas purifier and a discharge pipe. The lower end of the heat accumulator is provided with a combustion nozzle. The combustion nozzle is respectively connected to the air pipe, fuel pipe and gas pipe through the distribution pipe. The air pipe passes through the heat accumulator to connect with the combustion fan. The pipeline is connected to the biomass gasifier through a high-temperature fan, and the fuel pipeline is connected to the fuel bin. The combustible gas produced by the conversion of the biomass gasifier is transported to the distribution pipe through the high-temperature fan, and burns through the combustion nozzle to heat the interior of the aluminum melting furnace. , the high-temperature flue gas generated during the combustion process is discharged from the flue gas pipe, and the high-temperature flue gas preheats the cold air in the heat accumulator.

The technologies disclosed in the above two patents/patent applications both use biomass gas to heat and melt aluminum materials, and Chinese patent application 201420852077.7 also uses high-temperature flue gas discharged from the aluminum melting furnace to preheat the cold air in the heat accumulator , which improves energy utilization efficiency, but the above-mentioned technologies are limited to using biomass gas to heat the aluminum melting furnace, the utilization of biomass gas in the manufacturing process of aluminum materials is limited, and the energy supply method is single, and the above-mentioned technologies all exist Disadvantages or deficiencies, such as: (1), the combustion heat of biomass gas is used to heat aluminum, and the exhausted flue gas also contains a large amount of combustible components, but the above-mentioned technology does not re-examine the combustible components in the exhausted flue gas However, the flue gas is directly discharged to the atmosphere, which leads to a waste of energy and low thermal efficiency; (2), there are still a large number of harmful components in the flue gas, which are directly discharged to the external environment after a combustion, which is harmful to the environment. (3) High temperature flue gas also contains a lot of heat. In the above technology, only high temperature flue gas is used to preheat the cold air in the heat exchanger, and other waste heat utilization methods are not used. Limitations, low efficiency.

Therefore, it is an urgent problem to be solved in the industry to provide an aluminum oxidation heating system using a biomass gasification furnace that can apply the heat generated by the combustion of biomass gas to the aluminum oxidation furnace and can fully utilize the waste heat of the flue gas.

Contents of the invention

The purpose of the utility model is to provide an aluminum oxidation heating system that can apply the heat generated by biomass gas combustion to an aluminum oxidation furnace, fully utilize the waste heat of the flue gas, and significantly reduce the carbon dioxide content in the flue gas.

According to the solution of the utility model, an aluminum material oxidation heating system using a biomass gasifier is provided, including: an aluminum material oxidation tank for holding aluminum material treatment oxidation liquid and an aluminum material oxidation tank for heating Heat exchange coils for oxidizing chemicals for aluminum treatment. The aluminum oxidation heating system using a biomass gasification furnace further includes: a biomass gasification furnace for providing biomass gas; a burner for burning biomass gas from the biomass gasification furnace; and a spray The heat exchange chamber, the primary spray heat exchange chamber includes the primary spray chamber body, the passage hole provided on one end wall of the primary spray chamber body, the medium-temperature flue gas outlet provided on the other end wall of the primary spray chamber body, and the primary spray chamber body. At least one warm water inlet on the upper part of the shower body and communicated with the outlet end of the heat exchange coil through a pipeline, and a hot water outlet located on the lower part of the primary spray room body and communicated with the inlet end of the heat exchange coil through a pipeline, located at the primary The combustion cylinder inside the spray chamber body, and the spray plate located inside the primary spray chamber body and above the combustion cylinder. Wherein, the combustion cylinder includes a closed end adjacent to the other end wall of the primary spray chamber body, an open end extending through a through hole of the primary spray chamber body to the outside of the primary spray heat exchange chamber, and a gap between the closed end and the open end. The smoke exhaust pipe extends from the side wall of the combustion tube to the direction of the spray plate. The open end of the combustion tube is connected to the burner to inject flames into the combustion tube to burn and release heat, so that at least one warm water inlet is sprayed through the spray plate The water in the primary spray heat exchange chamber is firstly heated by the high-temperature flue gas discharged from the exhaust pipe, and then heated by the wall of the combustion cylinder for the second time, and then transported to the heat exchange coil through the pipeline to heat the aluminum in the aluminum oxidation pool. Oxidizing solution for material treatment.

Preferably, the end of the smoke exhaust pipe away from the combustion cylinder forms a closed end, and the adjacent closed end extends outward along the radial direction of the smoke exhaust pipe to form at least two smoke manifolds, so that the smoke from the combustion cylinder passes through at least two The flue gas manifold is sprayed into the primary spray heat exchange chamber to exchange heat with water, and the flue gas after heat exchange carries part of the water vapor out of the primary spray heat exchange chamber through the medium-temperature flue gas outlet.

Optionally, at least four smoke manifolds are formed by extending outward along the radial direction of the smoke exhaust pipe adjacent to the closed end, and at least four smoke manifolds are arranged at equal intervals around the smoke exhaust pipe, so that the smoke flows uniformly to the primary The spray is sprayed in all directions in the spray heat exchange chamber, so that the water sprayed to each area in the primary spray heat exchange chamber through the spray plate can be heated by the flue gas.

Preferably, the primary spray heat exchange chamber further includes a water replenishment port provided on the primary spray chamber body, for replenishing the primary spray heat exchange chamber with moisture carried away by the flue gas. The water supply port can be arranged at any position on the main body of the primary spray room, such as the top wall, side wall, front end wall or rear end wall.

Optionally, at least one warm water inlet can be arranged on the top wall of the primary spray chamber body, or on the side wall or end wall adjacent to the top wall; the hot water outlet can be arranged on the bottom wall of the primary spray chamber body, or adjacent to the bottom wall. The wall is provided on the side wall or the end wall.

Optionally, the primary spray heat exchange chamber is further provided with an overflow port, and the overflow port can be provided at any position in the middle of the gasifier body, such as a side wall or an end wall.

Optionally, in the height direction of the primary spray heat exchange chamber, the order from bottom to top is: hot water outlet, combustion cylinder, water supply port, overflow port, flue gas manifold, medium temperature flue gas outlet , spray plate and warm water inlet.

Optionally, it further includes a secondary spray heat exchange chamber. The secondary spray heat exchange chamber includes a secondary spray chamber body, a low-temperature flue gas outlet located on the top wall of the secondary spray chamber body, and a secondary spray chamber body. The secondary hot water outlet on the bottom wall of the shower room body, the medium-temperature flue gas inlet located on the side wall of the secondary spray room body adjacent to the bottom wall of the secondary spray room body, and the secondary spray gas inlet adjacent to the top wall of the secondary spray room body. The cold water inlet on the side wall of the spray chamber body, and the cold water spray head arranged inside the secondary spray chamber body adjacent to the top wall of the secondary spray chamber body, wherein the medium-temperature flue gas inlet of the secondary spray heat exchange chamber passes through The pipeline is connected with the medium-temperature flue gas outlet of the primary spray heat exchange chamber, the secondary hot water outlet of the secondary spray heat exchange chamber is connected with the water supply port of the primary spray heat exchange chamber through the pipeline, and the cold water spray head is connected with the cold water through the pipeline. The inlet is connected to spray cold water from the outside into the body of the secondary spray chamber, so that the flue gas from the primary spray heat exchange chamber heats the cold water sprayed in the secondary spray heat exchange chamber into hot water and delivers it to the primary spray chamber. Shower the heat exchange chamber to replenish the moisture taken away in the flue gas.

Optionally, the biomass gasification furnace includes a gasification furnace body, a fire grate and a spacer arranged in the gasification furnace body to divide the internal space of the gasification furnace body into a gasification reaction chamber located in the middle and upper part and an air chamber located in the lower part. A biomass feed inlet and a biomass gas outlet are arranged on the upper part of the gasifier body and communicated with the gasification reaction chamber, and a gasification agent inlet is arranged on the lower part of the gasifier body and communicated with the air chamber.

Optionally, the biomass feed inlet and the biomass gas outlet can be spaced at any position on the upper part of the gasifier body, such as the side wall or the top wall. For example, the biomass feed inlet can be arranged on the side wall of the gasifier body, and the biomass gas outlet can be arranged on the top wall of the gasifier body. The gasification agent inlet can be arranged at any position on the lower part of the gasifier body, such as on the bottom wall or on the side wall adjacent to the bottom wall.

Optionally, the system further includes a filter chamber for cleaning and filtering the biomass gas from the biomass gas outlet of the biomass gasifier, the filter chamber includes a filter chamber body for holding water, and a filter chamber arranged at the top of the filter chamber Biomass gas inlet, clean gas outlet, and a diversion pipe extending from the biomass gas inlet to the filter chamber to below the water surface. The biomass gas inlet is connected with the biomass gas outlet of the biomass gasifier through a pipeline to transport the biomass gas to Underwater filtration is carried out in the filter chamber, and the clean gas outlet sends the filtered clean gas to the burner for combustion through the pipeline.

Preferably, the burner includes a housing, a gas inlet at one end of the housing, a flame outlet at the other end of the housing, at least one swirling air inlet at the side wall of the housing, and a gas inlet adjacent to the flame outlet in the housing. The gas inlet is connected with the clean gas outlet of the filter chamber through the pipeline, and the flame outlet is connected with the opening end of the combustion cylinder of the primary spray heat exchange chamber.

Alternatively, the porous filter plate may be a porous ceramic filter plate, a honeycomb ceramic plate, or a porous plate made of other high temperature resistant materials.

Preferably, the combustion tube is tapered from the closed end to the open end, that is, in the shape of a trumpet, so as to facilitate the combustion and heat release of the flame in the combustion tube. Wherein, heat-resistant seals are used to seal or weld between the combustion cylinder and the passage hole.

Preferably, at least one swirl air inlet is arranged along a tangential direction of the casing of the burner, so that air entering through the at least one swirl air inlet forms a swirl in the casing.

More preferably, the biomass gasifier further includes an air jacket arranged on the side wall of the gasifier body around the gasification reaction chamber, the air jacket includes an air inlet and an air outlet, and the air outlet communicates with the gasification agent inlet through a pipeline.

Optionally, the low-temperature flue gas outlet of the secondary spray heat exchange chamber is connected to the chimney through the flue gas discharge pipe, and the return flue gas outlet is arranged on the flue gas discharge pipe, and the return flue gas outlet passes through the pipeline and the wind of the biomass gasifier The air inlet of the casing is connected to return part of the flue gas rich in water vapor to the biomass gasifier as a gasification agent.

The furnace wall of the biomass gasification furnace heats the part of the flue gas rich in water vapor that flows back into the wind jacket into a mixture of high-temperature water vapor and flue gas, and enters the biomass gasification furnace through the gasification agent inlet as biomass Gasification agent for gasification reaction. This can not only avoid energy waste, but also improve the reaction efficiency of the gasifier.

Optionally, it further includes a blower for supplementing air into the pipeline between the return flue gas outlet of the secondary spray heat exchange chamber and the air inlet of the wind jacket.

Wherein, the edge of the spray plate is joined with the inner surface of the primary spray chamber body of the primary spray heat exchange chamber.

Among them, the water forms a circulation loop between the primary spray heat exchange chamber and the heat exchange coil in the aluminum oxidation pool, and the water flows through the heat exchange coil to release heat to the oxidation liquid in the aluminum oxidation pool.

Optionally, the temperature of the hot water entering the heat exchange coil of the aluminum material oxidation tank is set at 70°C-90°C, and the temperature of the hot water discharged from the heat exchange coil is set at 50°C-70°C.

Optionally, the temperature of the flue gas entering from the medium-temperature flue gas inlet of the secondary spray heat exchange chamber is set at about 70°C to 90°C, and the temperature of the hot water discharged from the secondary hot water outlet of the secondary spray heat exchange chamber The temperature of the flue gas discharged from the low-temperature flue gas outlet of the secondary spray heat exchange chamber is set at about 50°C to 70°C.

Optionally, the heat exchange coils in the aluminum oxidation tank can be arranged as a plurality of pipes arranged in parallel connected end to end or as helically coiled pipes.

The beneficial effects of the utility model are: (1), in the process of oxidizing and heating the aluminum material, biomass gas is used for heating, which increases the utilization mode of biomass fuel in the production of aluminum industry, and makes full use of many advantages of biomass fuel. Advantages, low carbon and environmental protection, and due to the low sulfur content and nitrogen content of biomass fuel, the pollution to the environment is small; (2), using water as the heat exchange medium between the flue gas discharged from the burner and the aluminum oxidation pool The heat exchange is carried out between the heat exchange coils, the heat supply effect to the oxidation solution in the aluminum oxidation pool is stable, and it is easy to ensure that the oxidation solution is in a suitable temperature range suitable for aluminum oxidation; (3), using a spray heat exchange The two-stage heat exchange system of the chamber and the secondary spray heat exchange chamber makes full use of the waste heat of the high-temperature flue gas and improves the thermal efficiency of the fuel. The heat exchange has high heat exchange efficiency. In addition, in the combustion cylinder of the primary spray heat exchange chamber, multiple flue gas manifolds arranged on the exhaust pipe are used to increase the heat exchange area, and the combustion cylinder wall and water are further used to conduct The heat exchange has greatly improved the heat exchange efficiency; (4), the flue gas returns to the biomass gasifier for re-combustion through the branch pipe on the flue gas discharge pipe of the secondary spray heat exchange chamber, and reuses the high-temperature flue gas. The direct emission of high-temperature flue gas is reduced, the waste heat utilization rate of high-temperature flue gas is improved, and the flue gas is recirculated and burned, which greatly reduces the emission of carbon dioxide and nitrogen oxides, and reduces the degree of pollution to the environment; ( 5) The high-temperature flue gas returned to the biomass gasifier through the branch pipe and burned again, because of the heat exchange with the spray water in the primary spray heat exchange chamber and the secondary spray heat exchange chamber before, this part of the flue gas It is rich in water vapor, which is beneficial to the gasification reaction process of biomass materials and can promote the generation of biomass gas; (6), the wind jacket uses the waste heat of the gasification reaction of the gasifier to heat the gasification agent, further improving the biomass The reaction efficiency of the gasifier; (7) The structure and connection method between the two-stage spray heat exchange chamber and the aluminum oxidation pool are simple, which is convenient for energy-saving transformation of the existing aluminum oxidation pool and has low cost, and is suitable for widespread promotion use.

Description of drawings

Fig. 1 shows a schematic diagram of an aluminum material oxidation heating system using a biomass gasification furnace of the present invention.

Fig. 2 shows a schematic diagram of a biomass gasifier using an aluminum material oxidation heating system of a biomass gasifier according to the present invention.

Fig. 3 shows a schematic diagram of the burner of the aluminum material oxidation heating system using the biomass gasification furnace of the present invention.

Fig. 4 shows the front view of the primary spray heat exchange chamber of the aluminum material oxidation heating system using the biomass gasification furnace of the present invention.

Fig. 5 shows a side view of the primary spray heat exchange chamber of the aluminum material oxidation heating system using a biomass gasifier of the present invention.

detailed description

Please refer to Fig. 1, according to an embodiment of the present invention, the aluminum material oxidation heating system using a biomass gasifier includes: a biomass gasifier 100, a burner 200, a primary spray heat exchange chamber 300, a secondary Spray heat exchange chamber 400, aluminum material oxidation pool 500, water pump 600, fan 700.

As shown in FIG. 2 , the biomass gasification furnace 100 includes a furnace body 110 for generating biomass gas. The furnace body 110 includes a main body 111 , an air jacket 112 located at the middle and lower part of the main body 111 and arranged around the main body 111 , a fire grate 113 located at a lower position inside the main body 111 , and a feed pipe 114 located on the side wall of the main body 111 . The side wall of the body 111 is provided with a biomass feed port 1112, a biomass gas outlet 1111 for discharging biomass gas, a gasification agent inlet 1113 is provided at the lower side of the side wall of the body 111, and the outlet of the wind jacket 112 The tuyere 1122 is connected with the gasification agent inlet 1113 so as to send the gasification agent into the furnace body 110 . The biomass from the feed pipe 114 enters the body 111 from the biomass feed port 1112, and accumulates on the fire grate 113, forming a gasification reaction zone on the top of the fire grate 113, where the biomass reacts with air, A series of gasification reactions of water vapor and reflux flue gas to produce biomass gas, the generated biomass gas is discharged from the body 111 through the biomass gas outlet 1111, and then enters the filter chamber 120 through the pipeline for filtration, and then enters the burner 200 burning in.

The filter chamber 120 is arranged downstream of the furnace body 110 , and the biomass gas discharged from the furnace body 110 enters the filter chamber 120 through a pipe. Water is contained in the filter chamber 120, and the pipe connecting the filter chamber 120 and the furnace body 110 extends below the liquid level in the filter chamber 120, and the top of the filter chamber 120 is additionally connected with a pipe to discharge the filtered biomass gas from the biomass. Gasifier 100. Among them, the biomass gas from the furnace body 110 is directly sent into the filter chamber 120 below the liquid level through the pipeline, and the biomass gas moves from bottom to top in the water to remove impurities, tar and other substances entrained in the gas, and obtain relatively clean biomass The gas is discharged from the filter chamber 120 through the pipeline.

FIG. 3 is a schematic diagram of a burner 200 . The burner 200 includes a housing 210, a gas inlet 211 located at one end of the housing 210, a flame outlet 212 located at the other end of the housing 210, a swirling air inlet 213 located on the side wall of the housing 210, and an adjacent flame outlet 212 The porous filter plate 220 is disposed in the casing 210 . In this non-limiting embodiment, the porous filter plate 220 is made of porous ceramic material for further removing tar and impurities in the biomass gas.

External air enters the burner 200 from the swirl air inlet 213 , so that the airflow in the burner 200 moves in a swirl shape, and the swirl air simultaneously achieves a combustion-supporting effect. The clean biomass gas from the filter chamber 120 enters the interior of the casing 210 from the gas inlet 211 of the casing 210 through the pipeline, and under the action of the swirling air, the biomass gas burned in the casing 210 will rotate towards the porous filter plate 220 movement, forming a swirl combustion form to ensure the fully mixed combustion of biomass gas and air. The high-temperature and high-pressure combustion gas will pass through the holes on the porous filter plate 220, and move toward the flame outlet 212, and then exit the burner from the flame outlet 212 200.

4 and 5 show schematic diagrams of the primary spray heat exchange chamber 300 . The primary spray heat exchange chamber 300 includes a primary spray chamber body 310 , a combustion cylinder 330 disposed in the primary spray chamber body 310 , and a spray plate 320 located above the combustion cylinder 330 near the top of the primary spray chamber body 310 . The primary spray chamber body 310 is provided with a through hole 313 on the front wall, a medium-temperature flue gas outlet 314 on the rear end wall, a warm water inlet 311 on the top wall, a hot water outlet 312 on the bottom wall, and a The water filling port 315 and the overflow port 316 located on the other side wall. The number of warm water inlets 311 may be multiple. The edge of the shower plate 320 is jointed with the inner surface of the primary shower chamber body 310, and a plurality of holes are arranged on it for water to flow through. The combustion tube 330 is provided with a smoke exhaust pipe 331 in a direction perpendicular to its axis, and four smoke manifolds 3311 are arranged at equal intervals on the smoke exhaust pipe 331. extend outside. By controlling the flow of warm water inlet 311 and hot water outlet 312, the position of the four flue gas manifolds 3311 is always above the water surface in the primary spray heat exchange chamber 300, and the position of the combustion cylinder 330 is always located in the primary spray heat exchange chamber 300 below the surface of the water.

The exhaust pipe 331 communicates with the combustion tube 330 . One end of the combustion tube 330 passes through the hole 313 and directly communicates with the flame outlet 212 of the burner 200. The other end of the combustion tube 330 is closed and located in the primary spray chamber body 310 of the primary spray heat exchange chamber 300. From the burner 200 The high-temperature flue gas discharged from the flame outlet 212 directly enters the combustion tube 330 of the primary spray heat exchange chamber 300, and continues to burn in the combustion tube 330. The heat released by the combustion is first transferred to the primary spray exchange through the wall of the combustion tube 330 Water in thermal chamber 300. The high-temperature flue gas formed by combustion is discharged from the flue gas manifold 3311 of the flue gas exhaust pipe 331 on the combustion tube 330 into the primary spray chamber body 310 and performs direct heat exchange with the water mist sprayed down from the spray plate 320 to exchange heat. All the heated flue gas is finally discharged from the medium-temperature flue gas outlet 314 to spray the heat exchange chamber 300 once.

As shown in FIG. 5 , the section of the combustor 330 is circular, and can also be set in a square or rectangular shape as required. The warm water inlet 311 of the primary spraying heat exchange chamber 300 is connected to the outlet end of the heat exchange coil 520 in the aluminum material oxidation tank 500 through a pipe, and the water of about 50 degrees Celsius from the outlet end of the heat exchange coil 520 flows from the warm water inlet 311 Enter the primary spray heat exchange chamber 300, and spray downwards through the holes on the spray plate 320 to form water mist. , the collected water floods the combustion cylinder 330 and realizes heat exchange with the cylinder wall of the combustion cylinder 330 again, the temperature of the water rises to about 80 degrees Celsius, and is discharged from the hot water outlet 312 on the primary spray chamber body 310, from the hot water The hot water at the outlet 312 is pumped by the water pump 600 to the inlet end of the heat exchange coil 520 in the aluminum oxidation pool 500 via pipelines.

During operation, the water forms a circulation loop between the primary spray heat exchange chamber 300 and the heat exchange coil 520 of the aluminum oxidation tank 500, the water absorbs the heat of high-temperature flue gas in the primary spray heat exchange chamber 300, and the water flows through When the aluminum material oxidation pool 500 is in place, heat is released to the aluminum material oxidation pool 500 to heat the oxidation liquid therein. When water flows between the heat exchange coil 520 of the aluminum oxidation tank 500 and the spray heat exchange chamber 300, the amount of water will continue to decrease with the discharge of high-temperature flue gas and the evaporation of water, so water needs to be replenished at any time. Prevent the burner from burning dry. Supplementary water enters the primary spray heat exchange chamber 300 from the water replenishment port 315 . In this non-limiting embodiment, the water replenishment port 315 is provided on the side wall of the primary spray heat exchange chamber 300 above the combustion cylinder 330 and below the medium-temperature flue gas outlet 314 in the primary spray heat exchange chamber 300 .

In addition, as shown in Figure 5, the other side wall of the primary spray heat exchange chamber 300 is provided with an overflow port 316 near the position of the spray plate 320. When there is too much water in the primary spray heat exchange chamber 300, if When the water surface reaches the height of the overflow port 316, the excess water will be discharged through the overflow port 316 once to spray the heat exchange chamber 300, so as to prevent the water surface from submerging the flue gas manifold 3311 on the smoke exhaust pipe 331 and causing smoke exhaustion to be unsmooth. In this non-limiting embodiment, in the height direction of the primary spraying heat exchange chamber 300, the position sequence from bottom to top is as follows: combustion cylinder 330, water supply port 315, overflow port 316, flue gas manifold 3311 , the medium-temperature flue gas outlet 314 and the spray plate 320 .

The secondary spray heat exchange chamber 400 includes a secondary spray chamber body 410, which is provided with a cold water inlet 411, a medium temperature flue gas inlet 412, a low temperature flue gas outlet 413, a secondary hot water outlet 414 and The cold water spray head 415 and the smoke discharge pipe 416 arranged inside the secondary spray chamber body 410 are connected to the low-temperature smoke outlet 413 . Cold water enters the secondary spray heat exchange chamber 400 through the cold water inlet 411 , and is sprayed in the secondary spray chamber body 410 through the cold water shower head 415 . The high-temperature flue gas discharged from the medium temperature flue gas outlet 314 of the primary spray heat exchange chamber 300 enters the secondary spray heat exchange chamber 400 through the medium temperature flue gas inlet 412, where it exchanges heat with the cold water sprayed by the cold water spray head 415 , the cold water fully absorbs the heat of the high-temperature flue gas and becomes hot water, which is then discharged from the secondary hot water outlet 414, while the high-temperature flue gas is discharged from the system through the low-temperature flue gas outlet 413 after heat exchange.

The temperature of the flue gas entering from the medium-temperature flue gas inlet 412 of the secondary spraying heat exchange chamber 400 is about 80°C, and the temperature of the hot water discharged from the secondary hot water outlet 414 of the secondary spraying heat exchange chamber 400 is about 50°C . The secondary hot water outlet 414 communicates with the water replenishment port 315 of the primary spray heat exchange chamber 300 , and the hot water flows from the secondary hot water outlet 414 to the water replenishment port 315 and enters the interior of the primary spray heat exchange chamber 300 . The water used as the heat exchange medium first enters the circulation from the cold water inlet of the secondary spray heat exchange chamber, and the water entering from here can also continuously replenish the amount of water lost in circulation in the primary spray heat exchange chamber 300 and the aluminum oxidation tank 500 And the amount of water taken away by the flue gas, so as to keep the circulating water used to heat the aluminum material 900 in the aluminum material oxidation pool 500 stable, thereby ensuring a good aluminum material oxidation effect.

In addition, the flue gas discharge pipe 416 of the secondary spray heat exchange chamber 400 is provided with a backflow flue gas outlet 4165, and the backflow flue gas outlet 4165 is connected to the air inlet 1121 of the air jacket 112 of the biomass gasifier 100 through a pipeline. The flue gas contacts and exchanges heat with a large amount of water in the primary spray heat exchange chamber 300 and the secondary spray heat exchange chamber 400, so the flue gas is rich in water vapor, and the temperature of the flue gas drops to about 60°C. In addition, air is added to the pipeline between the return flue gas outlet 4165 and the air inlet 1121 of the wind jacket 112 of the biomass gasifier 100 through the fan 800 to increase the oxygen content of the return flue gas. In addition, a fan 700 is provided in the pipeline between the return flue gas outlet 4165 and the air inlet 1121 of the wind jacket 112 of the biomass gasifier 100 to attract the water vapor-rich flue gas and the outside air toward the wind jacket 112 flow, so that the gasification agent rich in water vapor and oxygen enters the wind jacket 112, and then the gasification agent is preheated from the wind jacket 112 and then enters the furnace body 110 through the reaction gas inlet 1113 to promote the gasification reaction of biomass to generate biogas.

As shown in Figure 1, the aluminum material oxidation pool 500 is used for the oxidation reaction of the aluminum material 900. The oxidation of the aluminum material needs to be maintained at a certain temperature and the aluminum material is soaked in the oxidizing solution to complete. Therefore, the temperature of the oxidizing solution needs to be raised to a certain temperature. In order to obtain a good oxidation effect. The aluminum material oxidation tank 500 includes a tank body 510 containing aluminum material 900 and oxidation solution, and a heat exchange coil 520 arranged in the tank body 510. The heat exchange coil 520 has an inlet port 521 and an outlet port 522, and the inlet port 521 passes through a pipe It is connected to the hot water outlet 312 of the primary spray heat exchange chamber 300, and the outlet end 522 is connected to the warm water inlet 311 of the primary spray heat exchange chamber 300, so that the primary spray heat exchange chamber 300 and the heat exchange coil 520 A water circulation loop is formed between them, and a water pump 600 is also provided between the hot water outlet 312 and the inlet port 521 to increase the pressure and speed of water flow. The heat exchange coil 520 is arranged at the bottom of the aluminum oxidation tank 500 as a plurality of curved and parallel pipes or arranged in a circular shape to increase the heat exchange area so that the heat of the hot water can be efficiently transferred to the oxidation solution. The temperature of the hot water entering the heat exchange coil 520 is about 80°C, and the temperature of the hot water discharged from the heat exchange coil 520 is about 60°C. After the hot water returns to the primary spraying heat exchange chamber 300, it absorbs the heat of the high-temperature flue gas again, and the temperature rises to about 80° C., and circulates heat exchange again in the loop. Water as a heat exchange medium can continuously obtain heat from the flue gas of the primary spray heat exchanger 300 and the secondary spray heat exchanger 400, thereby bringing the heat to the oxidation solution in the aluminum oxidation pool 500 to realize The high-temperature oxidation of aluminum meets the temperature requirements of the oxidation reaction.

Although the preferred embodiment of the present utility model has been described in detail here, it should be understood that the present utility model is not limited to the specific structures described and shown in detail here, and can be made by Other modifications and variations will occur to those skilled in the art. For example, multiple primary spray heat exchange chambers can be set to achieve a better heat exchange effect, or the combustion temperature of the primary spray heat exchange chamber can be increased according to needs within the scope of the disclosure of the utility model to meet different oxidation reactions of aluminum materials heat demand, or do not use the secondary spray heat exchange chamber and directly replenish water to the primary spray heat exchange chamber through the water pump. In addition, various parameters in the utility model can be properly selected according to the specific use conditions within the scope disclosed in the utility model.

Claims (10)

1. an aluminium material oxidation heating system that adopts biomass gasifying furnace, comprising: for containing aluminumMaterial is processed with the aluminium material oxidation pond of oxidation liquid medicine and is located in described aluminium material oxidation pond for heatingAluminium is processed the heat exchange coil with oxidation liquid medicine, it is characterized in that: described employing biomass gasifying furnaceAluminium material oxidation heating system further comprise:

For the biomass gasifying furnace of biological fuel gas is provided, described biomass gasifying furnace comprises gasificationFurnace body, be located in described gasification furnace body described gasification furnace body interior spatial separation as being positioned atDescribed gasification furnace is located at the gasification reactor chamber of middle and upper part and the fire grate, the interval that are positioned at the air compartment of bottomBody top and the biomass material charging aperture being communicated with described gasification reactor chamber and biogas outlet,And the gasification agent inlet of being located at described gasification furnace body bottom and being communicated with described air compartment;

For the biomass fuel that burns and export from the described biogas of described biomass gasifying furnaceThe burner of gas; And

Once spray Heat Room, the described Heat Room that once sprays comprises spray chamber body, is located atThe passing through hole, be located at a described spray chamber body other end of described spray chamber body one end wallThe middle temperature exhanst gas outlet of wall, be located at a described spray chamber body top and by pipeline with described in changeAt least one warm water entrance that the port of export of hot coil is communicated with, be located under a described spray chamber bodyPortion and the hot water outlet being communicated with the arrival end of described heat exchange coil by pipeline, be located at described in onceThe combustion barrel of spray chamber body interior and be located at a described spray chamber body interior and be positioned at instituteState the shower plate of combustion barrel top;

Wherein, described combustion barrel comprises described another end wall of a contiguous described spray chamber bodyBlind end, through a described spray chamber body described by hole to the described Heat Room that once spraysThe outside openend extending and between described blind end and described openend from described combustion barrelThe smoke exhaust pipe that sidewall extends to described shower plate direction, the described openend of described combustion barrel with described inBurner is connected.

2. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 1, itsBe characterised in that, described smoke exhaust pipe forms blind end away from one end of described combustion barrel, contiguous described envelopeClosed end stretches out and forms at least three flue gas manifolds along the radial direction of described smoke exhaust pipe.

3. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 2, itsBe characterised in that, the described Heat Room that once sprays further comprises and being located on a described spray chamber bodyWater supplement port.

4. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 3, itsBe characterised in that, further comprise secondary spraying Heat Room, described secondary spraying Heat Room comprises secondarySpray chamber body, be located at described secondary spraying chamber body roof low-temperature flue gas outlet, be located at described inSecondary hot water's outlet of secondary spraying chamber body diapire, contiguous described secondary spraying chamber body diapire are establishedIn the middle temperature smoke inlet of described secondary spraying chamber body sidewall, contiguous described secondary spraying chamber bodyRoof is located at cold water inlet and the contiguous described secondary spraying of described secondary spraying chamber body sidewallChamber body roof is located at the cold water spray head of described secondary spraying chamber body interior, wherein, and described twoThe described middle temperature smoke inlet of inferior spray Heat Room is by pipeline and the described Heat Room that once spraysDescribed middle temperature exhanst gas outlet is communicated with, and described secondary hot water's outlet of described secondary spraying Heat Room is passed throughPipeline is communicated with the described described water supplement port that once sprays Heat Room, and described cold water spray head is by pipeLine is communicated with described cold water inlet.

5. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 4, itsBe characterised in that, described biomass material charging aperture is located at the sidewall of described gasification furnace body, described biologyThe roof of described gasification furnace body is located in the outlet of matter gas, and described gasification agent inlet is located at described gasification furnaceThe diapire of the sidewall of body and contiguous described gasification furnace body.

6. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 5, itsBe characterised in that, further comprise filter chamber, described filter chamber comprise filter chamber's body for being filled with water,Interval is located at the biogas entrance of described filter chamber top and clean gas outlet, from described lifeMaterial gas entrance extends to the mozzle below the water surface in described filter chamber, and described biogas entersMouth is communicated with the described biogas outlet of described biomass gasifying furnace by pipeline, described clean combustionGas outlet is connected to described burner by pipeline.

7. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 6, itsBe characterised in that, described burner comprises housing, is located at the fuel gas inlet of described housing one end, is located atThe flame export of the described housing other end, at least one rotational flow air of being located at described housing sidewall enterMouth and contiguous described flame export are located at the porous filter plate in housing, and described fuel gas inlet is logicalCross pipeline and be communicated with the described clean gas outlet of described filter chamber, described flame export and describedThe described openend of the described combustion barrel of inferior spray Heat Room is communicated with.

8. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 7, itsBe characterised in that, described at least one rotational flow air entrance is along the tangent line side of the housing of described burnerTo setting.

9. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 5, itsBe characterised in that, described in described biomass gasifying furnace further comprises and being located at around described gasification reactor chamberThe wind cover of gasification furnace body sidewall, described wind cover comprises air inlet and air outlet, described air outlet is logicalCrossing pipeline is communicated with described gasification agent inlet.

10. the aluminium material oxidation heating system of employing biomass gasifying furnace as claimed in claim 9,It is characterized in that, smoke discharge pipe is passed through in the described low-temperature flue gas outlet of described secondary spraying Heat RoomRoad is connected to chimney, backflow flue gas outlet is set, described backflow flue gas on described flue gas exhausting pipe lineOutlet is communicated with the described air inlet of the described wind cover of described biomass gasifying furnace by pipeline.