Aluminum liquid combustion system and method with stabilizer added

Abstract

The present invention relates to the technical field of metal aluminum fuel energy storage and utilization, specifically to a molten aluminum combustion system and method with added stabilizer. The system of the present invention includes a molten aluminum combustion reaction device, a stabilizer production device and a steam generating device connected to the molten aluminum combustion reaction device; the molten aluminum combustion reaction device includes a combustion chamber, an ignition device, and a gas distribution device; the combustion chamber is a quartz vertical reaction chamber, with cover plates provided at the top and bottom respectively, the top gas phase outlet is connected to a cooling system and an analysis unit in sequence, and a stabilizer inlet is provided at the bottom; the ignition end of the ignition device extends into the interior of the combustion chamber; the outlet of the gas distribution device is connected to the combustion chamber; a heat exchange medium inlet, a steam inlet and a stabilizer outlet are provided on the stabilizer production device; the heat exchange medium inlet is connected to the heat exchange medium outlet of the cooling system; the stabilizer outlet is connected to the stabilizer inlet; the steam generating device includes a steam chamber provided at the top of the combustion chamber, and the steam outlet of the steam chamber is connected to the steam inlet.

Description

Technical Field

[0001] The invention relates to the technical field of metal aluminum fuel energy storage and utilization, and in particular to a stabilizer-added aluminum liquid combustion system and method. Background Art

[0002] Aluminum-water-based fuel has high energy density, is safe and non-toxic, has stable raw material storage, and can work for a long time. It mainly uses water in the environment as an oxidant and metal aluminum as a combustion agent. It is a green and environmentally friendly new energy fuel and has received widespread attention. Domestic research on aluminum-water combustion started later than foreign research. At present, the main method is to add additives to solve the problem of aluminum-water reaction being difficult to start and continue to burn, improve the ideal combustion performance of aluminum-water reaction, and explore the feasibility of combustion reaction.

[0003] Polyacrylamide, chemical formula is (C3H5NO) n , is a linear high molecular polymer. Due to its good thermal stability and ability to dissolve in water in any proportion, it is often used as a flocculant, thickener, cross-linking agent, etc., and is widely used in many industries. In particular, in the field of oil extraction, polyacrylamide is an important oilfield chemical. For example, polyacrylamide as a drilling fluid thickener can increase the viscosity of the drilling fluid and its rheological properties, prevent well leakage and collapse; polyacrylamide as a fracturing acidizing additive can increase the viscosity of the fracturing fluid, reduce friction, and improve the sand suspension capacity of the fracturing process; polyacrylamide as an oilfield wastewater treatment agent can improve the flocculation effect and reduce the production of mud residue in the process.

[0004] In recent years, polyacrylamide has been introduced into the field of fuel research. For example, as one of the components of hydrogen fuel cells, it not only has the advantages of low toxicity, high energy conversion rate and high energy storage properties, but also enables the battery to continuously release hydrogen under non-catalytic conditions with just a simple trigger.

[0005] But the problem is that although the aluminum-water reaction theory is feasible, in reality the aluminum-water reaction is difficult to start and sustain. The oxides generated during the aluminum-water combustion reaction tend to coat the surface of unreacted aluminum powder particles, forming a dense oxide film, which also hinders the contact reaction between metallic aluminum and water. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a molten aluminum combustion system and method with the addition of a stabilizer, which has reasonable design, simple operation and obvious effect.

[0007] The present invention is achieved through the following technical solutions:

[0008] A molten aluminum combustion system with stabilizer added, comprising a molten aluminum combustion reaction device, a stabilizer production device and a steam generation device connected to the molten aluminum combustion reaction device;

[0009] The aluminum liquid combustion reaction device comprises a combustion chamber, an ignition device, and a gas distribution device; the combustion chamber is a quartz vertical reaction chamber, with cover plates provided at the top and bottom respectively, the top gas phase outlet is connected to a cooling system and an analysis unit in sequence, and a stabilizer inlet is provided at the bottom; the ignition end of the ignition device extends into the combustion chamber; the outlet of the gas distribution device is connected to the combustion chamber;

[0010] The stabilizer production device is provided with a heat exchange medium inlet, a steam inlet and a stabilizer outlet; the heat exchange medium inlet is connected to the heat exchange medium outlet of the cooling system; the stabilizer outlet is connected to the stabilizer inlet;

[0011] The steam generating device comprises a steam chamber arranged on the top of the combustion chamber, and a steam outlet of the steam chamber is connected to a steam inlet.

[0012] Further, the stabilizer production device includes a catalytic reaction unit and a polymerization reaction unit;

[0013] The catalytic reaction unit comprises a catalytic reaction kettle, an acrylonitrile tank and an acrylonitrile metering pump connected to the catalytic reaction kettle in sequence, a deionized water tank and a deionized water metering pump connected to the catalytic reaction kettle in sequence, and an online concentration control device; the catalytic reaction kettle is provided with a steam layer for heating on the outside and an agitator on the inside; the online concentration control device comprises a control system and an online concentration meter, the detection end of the online concentration meter extends into the catalytic reaction kettle, and the output end is connected to the input end of the control system; the output end of the control system is connected to the acrylonitrile metering pump and / or the deionized water metering pump;

[0014] The polymerization reaction unit comprises a vacuum pump, a concentration kettle, an ion exchange resin column and a polymerization kettle which are sequentially connected to the catalytic reaction kettle; the online concentration meter detection end of the online concentration control device is connected to the concentration kettle.

[0015] Furthermore, the steam layer inlet of the steam layer is connected to the steam inlet; the bottom steam inlet of the concentration kettle is connected to the steam inlet; and the bottom stabilizer outlet of the polymerization kettle is connected to the stabilizer outlet.

[0016] Furthermore, the steam generating device comprises a steam chamber; the steam chamber is placed on the top of the combustion chamber, and the steam outlet is connected to the steam inlet.

[0017] Furthermore, the measuring and recording device includes a camera and a computer; the camera is used to collect flame images of aluminum-water combustion, and the output end is connected to the computer.

[0018] Furthermore, the gas distribution device includes a gas cylinder; an outlet of the gas cylinder is provided with an air inlet valve.

[0019] Furthermore, an observation window is arranged outside the combustion chamber; the observation window is made of transparent quartz material.

[0020] Furthermore, a porous ceramic plate is provided in the combustion chamber.

[0021] A method for burning molten aluminum with the addition of a stabilizer, comprising:

[0022] Aluminum powder and water are prepared according to the chemical equivalent ratio to form a uniformly mixed slurry, which is then weighed and measured; according to the experimental working conditions, the stabilizer produced by the mixed stabilizer production device is mixed uniformly and used as a mixed fuel for standby use;

[0023] The mixed fuel begins to burn in the combustion chamber under the conditions of the stabilizer and the experimental atmosphere controlled by the gas distribution device; the gaseous mixture at the top outlet of the combustion chamber enters the cooling system, the gaseous product is cooled and sent to the analysis unit, and the exhaust gas is discharged into the atmosphere; the heat exchange medium after the cooling system and the steam generated by the steam generating device are sent to the stabilizer production device together;

[0024] The stabilizer produced by the stabilizer production device is fed into the combustion chamber as a fuel additive for continuous combustion of molten aluminum.

[0025] Furthermore, the concentrations in the catalytic reactor and the concentration reactor are monitored by an online concentration control device.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] The system of the present invention connects a stabilizer production device to a combustion chamber of an aluminum-water combustion reaction device, adds polyacrylamide produced by the stabilizer production device as an additive to the aluminum-water reaction raw material, and uses the characteristics of polyacrylamide such as high viscosity, complete solubility in water, small flow resistance, and no oxidation reaction with aluminum powder to use it as a stabilizer for aluminum-water combustion, thereby not only avoiding the fuel stratification phenomenon and allowing the oxidant water molecules to fully contact the evenly dispersed aluminum powder particles, but also effectively improving the reaction rate of aluminum powder and water, improving the oxidation rate of aluminum powder, and making the aluminum-water fuel process more stable and easy to ignite; at the same time, by utilizing the heat provided by the combustion reaction itself in the combustion chamber and the heat condensed and exchanged by the combustion products through the cooling system, the heat is comprehensively utilized to provide to the stabilizer production device, which is economical and efficient, and can effectively ensure the continuous production and supply of the additive polyacrylamide; the system of the present invention meets the requirements of the raw material additive of the aluminum-water combustion reaction, can reduce the reaction start-up time, and allow the reaction to continue to burn, providing support for revealing the mechanism of the aluminum-water combustion reaction.

[0028] Furthermore, the system of the present invention adopts a catalytic reaction unit and a polymerization reaction unit to produce a stabilizer, and measures and monitors the concentration of the corresponding units through an online concentration control device, so as to ensure that the stabilizer meets the reaction requirements according to the actual experimental working conditions; at the same time, a steam layer is set outside the catalytic reactor, which can effectively utilize the steam heat generated by the aluminum water combustion reaction device, which is environmentally friendly and economical; and an agitator is used to fully stir the liquid in the catalytic reactor, effectively improving the liquid mixing effect.

[0029] Furthermore, the system of the present invention can effectively maintain constant temperatures in the catalytic reactor, the concentration reactor and the polymerization reactor by connecting the steam inlet to the steam layer inlet, the steam inlet at the bottom of the reactor and the stabilizer outlet at the bottom of the reactor, which is beneficial to the catalysis and polymerization of the stabilizer and improves production efficiency.

[0030] Furthermore, the system of the present invention adopts a method of arranging a steam chamber on the top of the combustion chamber, which can effectively utilize the heat generated during combustion, so that the steam chamber provides steam for subsequent production units, which is economical and reliable.

[0031] Furthermore, the system of the present invention collects and analyzes the flame image of the aluminum-water combustion reaction in the combustion chamber in real time by arranging a camera connected to the output end of the computer, which is easy to operate and has reliable results.

[0032] Furthermore, the system of the present invention adopts a gas cylinder provided with an air inlet valve to distribute gas to the entire combustion chamber, which is safe and convenient to operate.

[0033] Furthermore, the system of the present invention can ensure timely and reliable observation of the combustion conditions during the test by providing a transparent observation window outside the combustion chamber, which is convenient and effective and can also ensure the safe operation of the system.

[0034] Furthermore, the system of the present invention adopts a porous ceramic plate to hold the mixed sample, which is easy to operate and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the structure of the system in the embodiment of the present invention.

[0036] Figure 2 It is a schematic diagram of the structure of the stabilizer production device described in an embodiment of the present invention.

[0037] In the figure: 1-gas cylinder, 2-inlet valve, 3-ignition device, 4-stabilizer inlet, 5-mixed sample, 6-combustion chamber, 7-observation window, 8-camera, 9-computer, 10-steam chamber, 11-steam outlet, 12-cover plate, 13-cooling system, 14-analysis unit, 15-waste gas treatment discharge port, 16-heat exchange medium inlet, 17-steam inlet, 18-stabilizer production device, 19-stabilizer outlet, 20-steam layer, 21-acrylonitrile tank, 22-deionized water tank, 23-acrylonitrile metering pump, 24-deionized water metering pump, 25-catalytic reactor, 26-agitator, 27-online concentration control device, 28-steam layer inlet, 29-vacuum pump, 30-concentration reactor, 31-bottom steam inlet, 32-ion exchange resin column, 33-polymerization reactor. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0039] The present invention provides a molten aluminum combustion system with a stabilizer added, such as Figure 1 and Figure 2 As shown, it includes a molten aluminum combustion reaction device, a stabilizer production device 18 and a steam generation device;

[0040] The aluminum liquid combustion reaction device is as follows: Figure 1 As shown, it includes a combustion chamber 6, a gas distribution device, an ignition device 3, a measurement and recording device composed of a camera 8 and a computer 9, a cooling system 13, an analysis unit 14, etc.;

[0041] Among them, the combustion chamber 6 is a quartz vertical reaction chamber made of high-temperature resistant material, with an external transparent quartz observation window 7; the measuring and recording device is used to collect aluminum powder combustion images, and transmit the reaction state in the quartz vertical reaction chamber to the computer 9 in real time through a high-speed camera 8; the combustion state in the combustion chamber 6 is recorded online for subsequent analysis, and the design is reasonable; the top and bottom ends of the combustion chamber 6 are respectively fixedly connected with a cover plate 12 by bolts, and a porous ceramic plate is built-in at the bottom to hold a mixed sample 5; the top outlet of the combustion chamber 6 is connected to a cooling system 13 and an analysis unit 14 in sequence, and a stabilizer inlet 4 is provided at the bottom, and an ignition device 3 and a gas distribution device are respectively provided at the bottom; the ignition end of the ignition device 3 extends into the interior of the combustion chamber 6, and the outlet of the gas distribution device is connected to the combustion chamber 6; the analysis unit 14 is provided with an exhaust gas treatment discharge port 15;

[0042] Furthermore, the gas distribution device delivers gas from the gas cylinder 1 into the bottom of the combustion chamber 6 through the intake valve 2 to provide atmosphere for the combustion reaction; and the ignition device 3 is used to ignite the combustion reaction.

[0043] Furthermore, the gaseous components after the combustion reaction are discharged from the top of the combustion chamber 6, and after heat exchange by the cooling system 13, they are sent to the analysis unit 14 for analysis, and the treated waste gas is discharged through the waste gas treatment outlet 15;

[0044] The stabilizer production device 18, such as Figure 1 As shown, a heat exchange medium inlet 16, a steam inlet 17 and a stabilizer outlet 19 are provided thereon; the heat exchange medium inlet 16 is connected to the heat exchange medium outlet of the cooling system 13, and the stabilizer outlet 19 is connected to the stabilizer inlet 4; the stabilizer production device 18 specifically includes a catalytic reaction unit and a polymerization reaction unit;

[0045] Among them, Figure 2 As shown, the catalytic reaction unit is composed of a catalytic reaction kettle 25; the catalytic reaction kettle 25 is provided with a stirrer 26 inside and an outer interlayer outside; the outer interlayer of the catalytic reaction kettle 25 is a steam layer 20, on which a steam layer inlet 28 is provided, and the steam layer inlet 28 is connected to the heat exchange medium inlet 16; steam is introduced into the steam layer 20 through the steam layer inlet 28 for heating to keep the temperature in the kettle constant; the catalytic reaction kettle 25 is also provided with an online concentration control device 27; the bottom of the catalytic reaction kettle 25 is respectively connected with an acrylonitrile tank 21 and a deionized water tank 22; the acrylonitrile tank 21 is provided with an acrylonitrile metering pump 23; the deionized water tank 22 is provided with a deionized water metering pump 24; the online concentration control device 27 includes a control system and an A line concentration meter, wherein the detection end of the line concentration meter extends into the catalytic reactor 25, and the output end is connected to the input end of the control system; the output end of the control system is connected to the acrylonitrile metering pump 23 and / or the deionized water metering pump 24; thereby controlling the amount of acrylonitrile and the amount of deionized water, so that the concentration of the solution in the catalytic reactor 25 meets the working condition requirements; the polymerization reaction unit comprises a vacuum pump 29, a concentration reactor 30, an ion exchange resin column 32 and a polymerization reactor 33 which are sequentially connected to the catalytic reactor 25; the concentration reactor 30 is provided with a bottom steam inlet 31, the bottom steam inlet 31 is connected to the steam outlet 11, the steam outlet 11 is connected to the steam inlet 17, and the steam inlet 17 is respectively connected to the steam layer inlet 28 and the bottom steam inlet 31; the bottom of the polymerization reactor 33 is connected to the stabilizer outlet 19;

[0046] Furthermore, the stabilizer monomer obtained by the catalytic reaction in the polymerization reaction unit is flash-evaporated and concentrated in the concentration kettle 30. After the stabilizer concentration value in the concentration kettle 30 monitored by the online concentration control device 27 reaches a certain concentration, it is sent to the polymerization kettle 33 through the ion exchange resin column 32 for polymerization reaction, and finally a polyacrylamide stabilizer product that meets the requirements is obtained. According to the requirements of the combustion reaction, the stabilizer is added online through the stabilizer inlet 4 at the bottom of the combustion chamber 6 to participate in the combustion reaction.

[0047] Furthermore, the acrylonitrile metering pump 23, the deionized water metering pump 24 and the concentration kettle 30 are also connected to the detection end of the online concentration control device 27 respectively, and the acrylonitrile metering pump 23 and the deionized water metering pump 24 are connected to the control end of the online concentration control device 27; the raw materials delivered by the acrylonitrile tank 21 and the deionized water tank 22 are adjusted by the concentration value monitored by the online concentration control device 27 in the catalytic reactor 25 to adjust the amount of the mixed raw materials, and after being metered by the acrylonitrile metering pump 23 and the deionized water metering pump 24, they are stirred and mixed uniformly in the catalytic reactor 25 by the stirrer 26;

[0048] The steam generating unit, such as Figure 1 As shown, it is mainly composed of a steam chamber 10;

[0049] The steam chamber 10 is placed on the top of the combustion chamber 6, and the combustion chamber 6 provides heat. If necessary, a heating system can be set up to ensure sufficient steam supply for the entire system. The steam outlet 11 of the steam chamber 10 is connected to the steam inlet 17. The steam inlet 17 is respectively connected to the steam layer inlet 28 and the kettle bottom steam inlet 31.

[0050] Furthermore, the steam generated by the steam chamber 10 is mainly provided to the steam layer 20 outside the catalytic reactor 25 of the stabilizer production device, and to provide heat for the stabilizer monomer concentration reactor 30; the steam usage of the catalytic reactor 25 is adjusted according to the temperature of the catalytic reaction, and the steam usage of the concentration reactor 30 is adjusted according to the concentration of the stabilizer monomer.

[0051] To study the mechanism of aluminum-water reaction, it is necessary to lower the ignition threshold of aluminum-water so that the combustion reaction can continue. The method of continuously producing polyacrylamide products through the above-mentioned stabilizer production device 18 and adding it as a stabilizer to the aluminum-water combustion reaction device can reduce the impact of the start-up time, so that the aluminum-water reaction can be started at the fastest speed in a cold state, providing a higher initial reaction temperature for the subsequent reaction, thereby allowing the reaction to continue burning.

[0052] The working principle of the system of the present invention is as follows:

[0053] Based on the combustion characteristics test of aluminum water-based fuel, such as Figure 1 As shown, a uniformly mixed aluminum-water fuel is placed on a porous ceramic plate in a combustion chamber 6, and at the same time, a proper amount of polyacrylamide stabilizer is fed into the combustion chamber 6 through a stabilizer outlet 19 and a stabilizer inlet 4 by a stabilizer production device 18 to form a fuel mixed sample 5; the experimental atmosphere is provided by a gas cylinder 1 through an air inlet valve 2 and enters from the bottom of the combustion chamber 6; the mixed sample is ignited by an ignition device 3, and the combustion process is observed by a transparent observation window 7 of the combustion chamber 6, and the process is recorded by a camera 8 and transmitted to a computer 9 in real time for further processing;

[0054] The heat provided by the combustion heats the steam chamber 10 at the top of the combustion chamber 6, and the steam from the steam outlet 11 is sent to the steam inlet of each unit;

[0055] The gaseous components after the combustion reaction come out from the top of the combustion chamber 6 and are sent to the cooling system 13. The cooled gas is sent to the analysis unit 14 for component analysis and is discharged through the exhaust gas treatment outlet 15. The heat exchange medium inlet 16 of the cooling system 13 and the steam from the steam chamber 10 are sent to the stabilizer production device 18 through the steam inlet 17 to provide heat. The stabilizer coming out of the stabilizer production device 18 is sent to the stabilizer inlet 4 of the combustion chamber 6 through the stabilizer outlet 19 and is replenished into the combustion chamber 6 in time, so that the aluminum-water reaction can be started conveniently and can be carried out continuously.

[0056] Among them, Figure 2 As shown, in the stabilizer production device 18, the acrylonitrile tank 21 and the deionized water tank 22 respectively send acrylonitrile and deionized water into the catalytic reactor 25 through the acrylonitrile metering pump 23 and the deionized water metering pump 24, and are stirred by the agitator 26 in the catalytic reactor 25, and the real-time concentration of the product in the catalytic reactor 25 is tested by the online concentration control device 27. The supply amount of acrylonitrile and deionized water is adjusted according to the real-time concentration of the crude monomer product in the catalytic reactor 25, such as controlling the mass percentage concentration in the catalytic reactor 25 to be 20%.

[0057] The steam from the steam chamber 10 passes through the steam layer inlet 28 and enters the steam layer 20 of the outer layer of the catalytic reactor 25 to provide heat for the catalytic hydration reaction, such as controlling the catalytic reaction temperature to 70°C; the crude monomer product after catalysis is sent to the concentration reactor 30 through the vacuum pump 29, and the steam from the steam chamber 10 passes through the steam inlet 31 at the bottom of the reactor and enters the concentration reactor 30, such as controlling the mass percentage concentration in the concentration reactor 30 to be 30%; the stabilizer after concentration passes through the ion exchange resin column 32, such as controlling the conductivity to be about 30μs / cm, and then is sent to the polymerization reactor 33, and the polyacrylamide product after the polymerization reaction is used as a stabilizer, and is sent to the combustion chamber 6 through the stabilizer outlet 19 as a stabilizer to undergo a combustion reaction with the mixed fuel.

[0058] In the experiment, the aluminum-water reaction was carried out using the system of the present invention, including the following steps. Figure 1 As shown:

[0059] Step 1: Prepare aluminum powder and water according to the chemical equivalent ratio to form a uniformly mixed slurry, and weigh it; according to the experimental working conditions, mix a certain proportion of stabilizer, such as adding 2% by mass of polyacrylamide as a stabilizer, mix well and use it as a mixed fuel for later use.

[0060] Step 2: Place the prepared fuel mixture in the combustion chamber 6, open the air inlet valve 2 of the gas cylinder 1, turn on the ignition device 3 in the experimental atmosphere, and start the combustion experiment.

[0061] Step 3: The combustion state is recorded online by a camera 8 through a transparent observation window 7 and transmitted to a computer 9 in real time for further processing; a steam chamber 10 arranged at the top of the combustion chamber 6 provides heat from the combustion of fuel to generate water vapor; the gaseous mixture at the top outlet of the combustion chamber 6 enters a cooling system 13, the gaseous product is cooled down, sent to an analysis unit 14, and finally discharged into the atmosphere through an exhaust gas treatment outlet 15.

[0062] Step 4: The heat exchange medium after the cooling system 13 passes through the heat exchange medium inlet 16 and is sent to the stabilizer production device 18 together with the steam generated in the steam chamber 10 through the steam inlet 17; the produced stabilizer is used as a fuel additive and is replenished to the stabilizer inlet 4 in time through the stabilizer outlet 19, and is sent to the combustion chamber 6 for continuous combustion.

[0063] Step 5: End of the experiment.

[0064] In the above step 1, polyacrylamide is used as a stabilizer. The preparation of polyacrylamide includes the following steps, and the device used is as follows: Figure 2 As shown,

[0065] Step 1: Turn on the acrylonitrile metering pump 23 of the acrylonitrile tank 21 and the deionized water metering pump 24 of the deionized water tank 22, feed acrylonitrile and deionized water into the catalytic reactor 25, keep the steam layer 20 outside the catalytic reactor 25 filled with steam, and after the agitator 26 mixes the liquid in the catalytic reactor 25 evenly, the real-time concentration in the catalytic reactor 25 is tested by the line concentration control device 27, and the liquid supply amount of acrylonitrile and deionized water is adjusted according to the real-time concentration of the catalytic reactor 25, such as controlling the mass percentage concentration in the catalytic reactor to be 20%.

[0066] Step 2: Control the catalytic reaction temperature to about 70° C. according to the steam amount; obtain a crude monomer product after catalytic hydration reaction.

[0067] Step 3: The crude monomer product is pumped to the concentration kettle 30 through the vacuum pump 29 to increase the mass percentage concentration of the product from 20% to about 30%. The heat is provided by the steam from the steam chamber 10. The stabilizer monomer is then sent to the polymerization kettle 33 through the ion exchange resin column 32 to control the conductivity to about 30μs / cm for polymerization reaction. Finally, it is added to the mixed fuel in the combustion chamber 6 as a stabilizer to undergo a combustion reaction.

[0068] Note that during the experiment, the amount of solution needs to be estimated. The amount of hydrogen produced during the reaction is relatively large, so it should be discharged out of the system as much as possible to avoid danger.

[0069] Based on the above system, the present invention also provides a method for burning molten aluminum with the addition of a stabilizer, comprising:

[0070] Aluminum powder and water are prepared according to the chemical equivalent ratio to form a uniformly mixed slurry, which is then weighed and measured; according to the experimental working condition requirements, the stabilizer produced by the mixed stabilizer production device 18 is mixed uniformly and used as a mixed fuel for standby use;

[0071] The mixed fuel begins to burn in the combustion chamber 6 under the condition of the stabilizer and in the experimental atmosphere controlled by the gas distribution device; the gaseous mixture at the top outlet of the combustion chamber 6 enters the cooling system 13, the gaseous product is cooled and sent to the analysis unit 14, and the exhaust gas is discharged into the atmosphere; the heat exchange medium after the cooling system 13 and the steam generated by the steam generating device are sent to the stabilizer production device 18 together;

[0072] The stabilizer produced by the stabilizer production device 18 is promptly delivered to the combustion chamber 6 as a fuel additive for replenishment until the end of the experiment.

[0073] The product concentrations in the catalytic reaction kettle 25 and the concentration kettle 30 are monitored by an online concentration control device 27 .

Claims

1. A molten aluminum combustion system with stabilizer added, characterized in that: It comprises an aluminum liquid combustion reaction device, a stabilizer production device (18) and a steam generation device connected to the aluminum liquid combustion reaction device; The aluminum liquid combustion reaction device comprises a combustion chamber (6), an ignition device (3), and a gas distribution device; the combustion chamber (6) is a quartz vertical reaction chamber, with cover plates (12) provided at the top and bottom respectively, the top gas phase outlet is connected to a cooling system (13) and an analysis unit (14) in sequence, and the bottom is provided with a stabilizer inlet (4); the ignition end of the ignition device (3) extends into the interior of the combustion chamber (6); the outlet of the gas distribution device is connected to the combustion chamber (6); The stabilizer production device (18) is provided with a heat exchange medium inlet (16), a steam inlet (17) and a stabilizer outlet (19); the heat exchange medium inlet (16) is connected to the heat exchange medium outlet of the cooling system (13); the stabilizer outlet (19) is connected to the stabilizer inlet (4); The steam generating device comprises a steam chamber (10) arranged on the top of the combustion chamber (6), and a steam outlet (11) of the steam chamber (10) is connected to a steam inlet (17); The stabilizer production device (18) comprises a catalytic reaction unit and a polymerization reaction unit; The catalytic reaction unit comprises a catalytic reaction kettle (25), an acrylonitrile tank (21) and an acrylonitrile metering pump (23) connected in sequence to the catalytic reaction kettle (25), a deionized water tank (22) and a deionized water metering pump (24) connected in sequence to the catalytic reaction kettle (25), and an online concentration control device (27); a steam layer (20) for heating is arranged outside the catalytic reaction kettle (25), and an agitator (26) is arranged inside; the online concentration control device (27) comprises a control system and an online concentration meter, wherein a detection end of the online concentration meter extends into the catalytic reaction kettle (25), and an output end is connected to an input end of the control system; and an output end of the control system is connected to the acrylonitrile metering pump (23) and / or the deionized water metering pump (24); The polymerization reaction unit comprises a vacuum pump (29), a concentration kettle (30), an ion exchange resin column (32) and a polymerization kettle (33) which are sequentially connected to the catalytic reaction kettle (25); the online concentration meter detection end of the online concentration control device (27) is connected to the concentration kettle (30); The steam layer inlet (28) of the steam layer (20) is connected to the steam inlet (17); the bottom steam inlet (31) of the concentration kettle (30) is connected to the steam inlet (17); and the bottom stabilizer outlet (34) of the polymerization kettle (33) is connected to the stabilizer outlet (19); A porous ceramic plate is arranged in the combustion chamber (6).

2. The aluminum liquid combustion system with stabilizer added according to claim 1, characterized in that: It also includes a measuring and recording device, which includes a camera (8) and a computer (9); the camera (8) is used to collect flame images of aluminum-water combustion, and the output end is connected to the computer (9).

3. The aluminum liquid combustion system with stabilizer added according to claim 1, characterized in that: The gas distribution device comprises a gas cylinder (1); an outlet of the gas cylinder (1) is provided with an air inlet valve (2).

4. The aluminum liquid combustion system with stabilizer added according to claim 1, characterized in that: An observation window (7) is arranged outside the combustion chamber (6); the observation window (7) is made of transparent quartz material.

5. A method for burning molten aluminum with the addition of a stabilizer, characterized in that: The system according to any one of claims 1 to 4 above comprises: Aluminum powder and water are prepared according to a chemical equivalent ratio to form a uniformly mixed slurry, which is then weighed and measured; according to the experimental working condition requirements, the stabilizer produced by the mixed stabilizer production device (18) is mixed uniformly and used as a mixed fuel for standby use; The mixed fuel begins to burn in the combustion chamber (6) under the condition of the stabilizer and in the experimental atmosphere controlled by the gas distribution device; the gas phase mixture at the top outlet of the combustion chamber (6) enters the cooling system (13), the gas phase product is cooled and then sent to the analysis unit (14), and the exhaust gas is discharged into the atmosphere; the heat exchange medium after passing through the cooling system (13) and the steam generated by the steam generating device are sent to the stabilizer production device (18) together; The stabilizer produced by the stabilizer production device (18) is fed into the combustion chamber (6) as a fuel additive for continuous combustion of molten aluminum.

6. The method for burning molten aluminum with the addition of a stabilizer according to claim 5, characterized in that: The concentrations in the catalytic reaction kettle (25) and the concentration kettle (30) are monitored by an online concentration control device (27).

Images