Multi-chamber continuous reaction type secondary aluminum ash harmless treatment system

Abstract

The utility model discloses a multi-chamber continuous reaction type secondary aluminum ash innocent treatment system, which is characterized in that an inclination angle controller is arranged at the bottom, the upper part of the multi-chamber continuous reaction type secondary aluminum ash innocent treatment system is connected with a reaction chamber which is divided into a first chamber, a second chamber and a third chamber by a partition control panel, and a heating layer is coated outside the reaction chamber; the three chambers are respectively provided with a stirrer and an exhaust pipe, the first chamber is provided with a feed port, and the three chambers are connected with a storage chamber; a nitrogen generation device and an ammonia water tank with a water inlet / outlet are sequentially arranged above the first-chamber exhaust pipe, and an igniter is arranged on the ammonia water tank; the reaction chamber is provided with a sensor, and a supporting structure is provided with an executing mechanism linked with the inclination angle controller. The separation control plate can move up and down, the inclination angle controller is matched with the sensor and the execution mechanism to regulate and control the slurry retention time, and hydrogen is ignited after waste gas is protected by nitrogen and ammonia is removed by ammonia water. The system is continuous in operation, stable in treatment effect, small in occupied area, low in resource consumption, free of three wastes, capable of achieving secondary aluminum ash harmless treatment and easy and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the harmless treatment field of secondary aluminum ash, and specifically relates to a multi-chamber continuous reaction type secondary aluminum ash harmless treatment system. BACKGROUND

[0002] Secondary aluminum ash refers to the waste slag generated in the production process of aluminum materials, which is a resource after reprocessing. Specifically, a large amount of aluminum slag is generated in the production process of aluminum materials, including primary aluminum ash and secondary aluminum ash. The primary aluminum ash refers to the aluminum oxide waste slag generated by the reaction of aluminum metal with oxygen in the air under the action of high temperature in the smelting process of aluminum materials, also known as white mud. The secondary aluminum ash refers to the further treatment of the primary aluminum ash, and the waste slag formed by extracting the aluminum metal and other valuable substances in it through processes such as smelting, crushing and screening is the secondary aluminum ash. The secondary aluminum ash is a dangerous waste, containing a large amount of fluorides, cyanides, aluminum carbide, aluminum nitride and other toxic and harmful substances.

[0003] In recent years, China's aluminum industry has made great progress, and at the same time, the output of aluminum ash has increased year by year, and enterprises urgently need new technologies to absorb large amounts of secondary aluminum ash. At present, secondary aluminum ash has become a good prospect for the green and healthy development of the aluminum industry.

[0004] Although the secondary aluminum ash harmless treatment device has made certain progress in technology, there are still some defects and challenges. At present, the harmless treatment technology for secondary aluminum ash is still in the development stage, and the maturity and reliability of various treatment methods are different. Some emerging technologies still need to be further verified and improved to ensure their treatment effect and environmental safety. The waste gas and wastewater generated in the process of treating secondary aluminum ash may contain harmful substances such as heavy metals and fluorides. The treatment and discharge of these waste gas and wastewater need to meet strict environmental protection standards to prevent potential harm to the environment and human health. Although the secondary aluminum ash harmless treatment device has made some progress, further research and improvement are still needed to improve the treatment efficiency, reduce energy consumption, and solve the problems of waste gas and wastewater treatment. In the prior art, a multi-kettle series reactor is used to solve the problems existing in a single continuous reaction kettle, but this type of series reactor increases the investment in reaction kettles and makes the operation process more complex, therefore, an efficient and economical continuous reaction device system is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a multi-chamber continuous reaction type secondary aluminum ash harmless treatment system, which can efficiently, stably and flexibly treat secondary aluminum ash while saving resources and improving work efficiency.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A multi-chamber continuous reaction type secondary aluminum ash harmless treatment system, including a chamber, a second chamber, a third chamber, a heating layer, a stirrer, a feed inlet, a nitrogen generating device, a water inlet, an igniter, an exhaust pipe, an ammonia water tank, a reaction chamber, a water outlet, a separation control plate, an inclination angle controller, a control valve, a storage chamber, an exhaust hole, an ammonia water tank, a reaction chamber, a sensor, a control mechanism.

[0008] The inclination angle controller is located at the bottom, and a reaction chamber connected with the inclination angle controller is arranged on the inclination angle controller, the reaction chamber includes a chamber, a second chamber and a third chamber, a heating layer is arranged on the outermost layer of the reaction chamber, a stirrer is arranged in each of the chamber, the second chamber and the third chamber, and an exhaust pipe is arranged above each of the chamber, the second chamber and the third chamber, a feed inlet is arranged at the upper left of the chamber, and a storage chamber is arranged at the lower right of the third chamber, a nitrogen generating device is arranged above the exhaust pipe of the chamber, an ammonia water tank is arranged above the nitrogen generating device, the ammonia water tank includes a water inlet and a water outlet, and an igniter is arranged above the ammonia water tank.

[0009] The heating layer is used for heating and controlling the temperature of the whole reaction chamber, the separation control plate is mainly used for separating the chamber, the second chamber and the third chamber, the time required for slurry flow can be controlled by mechanical up-down movement, the nitrogen generating device is used for providing nitrogen and mainly plays a protection role, the inclination angle controller is mainly used for controlling the inclination angle of the whole reaction chamber, so as to further control the residence time of the slurry in the reaction chamber, the water inlet and the water outlet are mainly used for replacing ammonia water in the ammonia water tank, the igniter is mainly used for igniting hydrogen generated in the reaction, the sensor is installed at the bottom and the side of the reaction chamber and is used for detecting the inclination angle of the reaction chamber in real time, the control unit is connected to the sensor and the actuator through a data line and sends a control instruction, and the actuator is installed on the support structure of the reaction chamber and is used for adjusting the inclination angle of the reaction chamber.

[0010] In summary, the advantages of the utility model are as follows:

[0011] ①Efficiency: Continuous processing equipment can realize continuous operation, which can greatly improve the processing efficiency compared with traditional batch processing. They usually adopt automatic control system, reduce manual intervention and improve work efficiency.

[0012] ②Stability: Continuous processing equipment adopts stable process flow and operating parameters, which can maintain stable processing effect for a long time. Compared with batch processing equipment, the processing effect may have certain volatility due to factors such as raw material quality and operating conditions.

[0013] ③Resource saving: Continuous processing equipment usually has smaller floor area, which can better utilize space resources. In addition, due to the high efficiency of continuous processing equipment, the consumption of energy and water resources can be reduced, and the processing cost can be reduced.

[0014] 4. Harmlessness: No waste water, waste gas and waste residue are generated, and harmlessness is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of a multi-chamber continuous reaction type secondary aluminum ash harmless treatment system;

[0016] In the figure: 1 - one chamber; 2 - two chambers; 3 - three chambers; 4 - inclination angle controller; 5 - heating layer; 6 - stirrer; 7 - feed inlet; 8 - nitrogen generating device; 9 - water inlet; 10 - igniter; 11 - water outlet; 12 - separation control plate; 13 - control valve; 14 - storage chamber; 15 - exhaust pipe; 16 - ammonia water tank; 17 - reaction chamber, 18 sensor, 19 control mechanism.

[0017] Figure 2 It is a detailed structure schematic view of an executing mechanism of the utility model;

[0018] The executing mechanism is a hydraulic cylinder structure, the output end of the hydraulic cylinder is hinged to the support structure of the reaction chamber, the input end is electrically connected with the control assembly, is used for receiving the instruction of the control assembly and drives the inclination angle controller to adjust the inclination angle of the reaction chamber; DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0020] Refer to the accompanying Figure 1 A multi-chamber continuous reaction type secondary aluminum ash harmless treatment system, including 1 one chamber, 2 two chambers, 3 three chambers, 5 heating layer, 6 stirrer, 7 feed inlet, 8 nitrogen generating device, 9 water inlet, 10 igniter, 15 exhaust hole, 16 ammonia water tank, 17 reaction chamber, 11 water outlet, 12 separation control plate, 4 inclination angle controller, 13 control valve, 14 storage chamber, 18 sensor, 19 control mechanism.

[0021] The 4 inclination angle controller is located at the bottom, and a 17 reaction chamber connected therewith is arranged above the 4 inclination angle controller, the 17 reaction chamber comprises a 1 chamber, a 2 second chamber and a 3 third chamber, and a 5 heating layer is arranged on the outermost layer of the 17 reaction chamber, a 6 stirrer is arranged in each of the 1 chamber, the 2 second chamber and the 3 third chamber, and a 15 exhaust pipe is arranged above each of the 1 chamber, the 2 second chamber and the 3 third chamber, a 7 feeding port is arranged at the upper left of the 1 chamber, and a 14 storage chamber is arranged at the lower right of the 3 third chamber. A 8 nitrogen generating device is arranged above the 15 exhaust pipe of the 1 chamber, a 16 ammonia water tank is arranged above the 8 nitrogen generating device, the 16 ammonia water tank comprises a 9 water inlet and a 11 water outlet, and a 10 igniter is arranged above the 16 ammonia water tank. A sensor 18 is arranged at the bottom and the side of the reaction chamber, a control unit is arranged in a control box of the equipment, and an actuator 19 is arranged on a support structure of the reaction chamber. Details of the actuator are shown in Figure 2 .

[0022] It should be noted that the heating layer is used for heating and controlling the temperature of the entire reaction chamber, the separation control plate is mainly used for separating the 1 chamber, the 2 second chamber and the 3 third chamber, the time required for the slurry flow can be controlled by mechanically moving up and down, the nitrogen generating device is used for providing nitrogen and mainly plays a protection role, and the inclination angle controller is mainly used for controlling the inclination angle of the entire reaction chamber. The working process is as follows: the sensor detects the current inclination angle of the reaction chamber in real time, and converts the data into an electrical signal and transmits it to the control unit. After receiving the data of the sensor, the control unit compares it with the preset target inclination angle, and calculates the angle deviation. The control unit generates corresponding control instructions according to the angle deviation and the preset control algorithm. The actuator (hydraulic cylinder) adjusts the inclination angle of the reaction chamber according to the control instructions, so that the actual inclination angle tends to and stabilizes at the target value. Thus, the residence time of the slurry in the reaction chamber is further controlled. The water inlet and the water outlet are mainly used for replacing the ammonia water in the ammonia water tank, and the igniter is mainly used for igniting the hydrogen generated in the reaction.

[0023] The material enters the 1 chamber from the feeding port, the solution is mixed with the aluminum ash liquid at a solid-liquid ratio of 1-10 L / Kg, the fluorine-containing agent is added according to the fluorine concentration, and 3-10 wt% of the deaminating agent solution is added. The material passes through the 2 second chamber and the 3 third chamber in turn through the separation control plate, the temperature of the entire reaction chamber is controlled at 60-100 ℃ by the heating layer, and the inclination angle of the entire reaction chamber is controlled by the inclination angle controller, so that the residence time of the slurry in the reaction chamber is 3-6 h. Finally, the slurry enters the storage chamber and is naturally dried. During the reaction, hydrogen and ammonia are generated in the 1 chamber, the 2 second chamber and the 3 third chamber, which are collected through the exhaust pipe, protected by the nitrogen generating device, and then enter the ammonia water tank to remove the ammonia, and the remaining hydrogen is ignited by the igniter.

Claims

1. A multi-chamber continuous reaction secondary aluminum dross harmless treatment system, comprising a chamber, a second chamber, a third chamber, a heating layer, a stirrer, a feed inlet, a nitrogen generating device, a water inlet, an igniter, an exhaust pipe, an ammonia water tank, a reaction chamber, a water outlet, a partition control plate, an inclination angle controller, a control valve, a storage chamber, a sensor, an actuator; the inclination angle controller is arranged at the bottom of the system and connected with the reaction chamber, the reaction chamber is divided into the chamber, the second chamber and the third chamber by the partition control plate, the heating layer is arranged on the outer layer of the reaction chamber, the chamber, the second chamber and the third chamber are all provided with the stirrer and the exhaust pipe at the upper part, the nitrogen generating device is arranged above the exhaust pipe of the chamber, the ammonia water tank is arranged above the nitrogen generating device, the ammonia water tank is provided with the water inlet and the water outlet, the igniter is arranged above the ammonia water tank, the feed inlet is arranged at the upper left of the chamber, the storage chamber is connected with the third chamber at the lower right, the sensor is installed at the bottom and the side of the reaction chamber, and the actuator is installed on the support structure of the reaction chamber and connected with the inclination angle controller.

2. The multi-chambered continuous reactional secondary aluminum dross harmless treatment system according to claim 1, characterized in that: The inclination angle controller is located at the bottom and provided with the reaction chamber connected therewith.

3. The multi-chambered continuous reactional secondary aluminum dross harmless treatment system according to claim 1, characterized in that: The reaction chamber comprises the chamber, the second chamber and the third chamber, and the outermost layer of the reaction chamber is provided with a heating layer.

4. The multi-chambered continuous reactional secondary aluminum dross harmless treatment system according to claim 1, characterized in that: The nitrogen generating device is arranged above the exhaust pipe of the chamber, the ammonia water tank is arranged above the nitrogen generating device, the ammonia water tank comprises the water inlet and the water outlet, and the igniter is arranged above the ammonia water tank.

5. The multi-chambered continuous reactional secondary aluminum dross harmless treatment system according to claim 1, characterized in that: The chamber, the second chamber and the third chamber are all provided with the stirrer and the exhaust pipe, the feed inlet is arranged at the upper left of the chamber, and the storage chamber is arranged at the lower right of the third chamber.

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