A high-risk waste liquid feeding combustion process

Abstract

The present invention relates to a high-risk waste liquid feeding and combustion process, specifically comprising: S1, storing waste mineral oil containing a small amount of alkyl aluminum in an alkyl aluminum mobile tank, and transporting it to a nitrogen-filled waste liquid feeding station within a boundary area under a nitrogen-sealed state; S2, quickly connecting a nitrogen pipeline 1 to the inlet end of the alkyl aluminum mobile tank, quickly connecting a waste liquid pipeline to the outlet end of the alkyl aluminum mobile tank, and connecting the outlet end of the waste liquid pipeline to a rotary kiln burner; S3, high-pressure nitrogen introduced into the nitrogen pipeline 1 presses the waste mineral oil stored in the alkyl aluminum mobile tank into the waste liquid pipeline; S4, high-pressure nitrogen introduced into the nitrogen pipeline 2 presses the waste mineral oil in the waste liquid pipeline into the rotary kiln burner, and compressed air introduced into the combustion-supporting pipeline fully atomizes the waste mineral oil entering the rotary kiln burner. The present invention fully and efficiently burns high-risk waste liquid while ensuring safe operation.

Description

Technical Field

[0001] The present invention relates to the field of chemical waste treatment, in particular to a high-risk waste liquid feeding and combustion process. Background Art

[0002] A large amount of toxic and harmful waste liquids, especially organic waste liquids, are generated during industrial production. Waste liquid treatment is an important issue in the current chemical, pharmaceutical, pesticide and petrochemical industries. People use various means to treat waste liquids so that the treated waste liquids meet the environmental protection requirements for discharge, or directly consume or convert the waste liquids into non-toxic and stable substances while ensuring safety.

[0003] In existing technologies, incineration is often used to treat waste liquid. However, for waste mineral oil containing a small amount of alkyl aluminum, the chemical properties of the alkyl aluminum are very active, and it will spontaneously combust when exposed to air and explode when exposed to water. Therefore, dedicated alkyl aluminum mobile tanks (steel cylinders) must be used and sealed with nitrogen, and then transported to a nitrogen-delivered waste liquid unloading station within the boundary area for combustion treatment.

[0004] To this end, it is urgent to develop and design a high-hazardous waste liquid feeding combustion process to effectively, safely and quickly process and consume high-hazardous waste liquid while ensuring safe operation. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a high-hazardous waste liquid feeding combustion process, which can fully and efficiently burn the high-hazardous waste liquid while ensuring safe operation.

[0006] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0007] A high-hazard waste liquid feeding combustion process includes the following construction steps:

[0008] S1, storing the waste mineral oil containing a small amount of alkyl aluminum in an alkyl aluminum mobile tank, transporting it to the nitrogen-fed waste liquid feeding station within the boundary area under nitrogen sealing, and performing correct anti-static grounding treatment on the alkyl aluminum mobile tank;

[0009] S2, when the electrostatic grounding clamp is successfully connected to the alkyl aluminum mobile tank, the nitrogen pipeline is quickly connected to the inlet end of the alkyl aluminum mobile tank, the waste liquid pipeline is quickly connected to the outlet end of the alkyl aluminum mobile tank, and the outlet end of the waste liquid pipeline is connected to the rotary kiln burner;

[0010] S3, first open the valve between the inlet end of the alkyl aluminum mobile tank and the nitrogen pipeline 1, then open the valve between the outlet end of the alkyl aluminum mobile tank and the waste liquid pipeline, and the high-pressure nitrogen introduced into the nitrogen pipeline 1 pressurizes the waste mineral oil stored in the alkyl aluminum mobile tank into the waste liquid pipeline;

[0011] S4, the rotary kiln burner is connected to the combustion-supporting pipe, and the rotary kiln combustion-supporting fan is installed at the inlet end of the combustion-supporting pipe; the waste liquid pipeline branch is connected to the nitrogen pipeline 2, and the high-pressure nitrogen introduced into the nitrogen pipeline 2 presses the waste mineral oil in the waste liquid pipeline into the rotary kiln burner. The compressed air introduced into the combustion-supporting pipe fully atomizes the waste mineral oil in the rotary kiln burner to facilitate full combustion;

[0012] S5. When the waste mineral oil in the alkyl aluminum mobile tank is fully burned, the quick-release joints and electrostatic grounding clamps at the inlet and outlet ends of the alkyl aluminum mobile tank are removed respectively, and the alkyl aluminum mobile tank is transported away from the nitrogen waste liquid feeding station to complete the entire operation step.

[0013] Furthermore, a weighing device is provided in the nitrogen waste liquid feeding station, and the alkyl aluminum mobile tank is placed on the weighing device. When the weighing device displays the weight of the empty tank, the valves installed on the inlet end, outlet end, nitrogen pipeline 1 and waste liquid pipeline of the alkyl aluminum mobile tank are closed.

[0014] Furthermore, in step S2, the outlet end of the waste liquid pipeline is connected to a waste liquid spray gun, which is installed in the rotary kiln burner, and the nozzle of the waste liquid spray gun faces the rotary kiln.

[0015] Furthermore, a startup sequence program command of the waste liquid spray gun is executed on the HMI interface, and the waste mineral oil is sprayed out from the nozzle of the waste liquid spray gun.

[0016] Furthermore, a shutdown sequence program command of the waste liquid spray gun is executed on the HMI interface, and the waste mineral oil stops being sprayed from the nozzle of the waste liquid spray gun.

[0017] Furthermore, the electrostatic grounding clamp is connected to an electrostatic grounding alarm, and when the grounding success signal of the electrostatic grounding clamp is lost, the electrostatic grounding alarm starts to alarm.

[0018] Furthermore, the electrostatic grounding alarm is connected to a waste liquid control system. When the grounding success signal of the electrostatic grounding clamp is lost, the waste liquid control system immediately cuts off the safety cut-off valve of the waste liquid pipeline.

[0019] Furthermore, the inlet of the waste liquid spray gun is also connected to a factory air duct, and the compressed air introduced into the factory air duct is fully mixed with the waste mineral oil in the waste liquid spray gun.

[0020] Furthermore, a gas nozzle is further provided in the rotary kiln burner, an inlet of the gas nozzle is connected to a fuel gas pipeline, and a nozzle of the gas nozzle faces into the rotary kiln.

[0021] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0022] 1. The main principle of the high-risk waste liquid feeding and combustion process of the present invention is as follows: high-pressure nitrogen gas introduced through nitrogen pipeline 1 enters the alkyl aluminum mobile tank from the inlet end, and presses waste mineral oil containing the alkyl aluminum into the waste liquid pipeline from its outlet end. High-pressure nitrogen gas introduced through nitrogen pipeline 2 then presses the waste mineral oil into the waste liquid spray gun. Compressed air and the waste mineral oil are thoroughly mixed and atomized in the waste liquid spray gun, and then sprayed from the waste liquid spray gun into the rotary kiln to complete full combustion. Due to the highly active chemical properties of the alkyl aluminum, it is transported to the nitrogen waste liquid feeding station within the boundary area under a nitrogen-sealed state. The alkyl aluminum mobile tank is properly anti-statically grounded to ensure that the high-risk waste liquid is fully and efficiently burned under safe operating conditions.

[0023] 2. During normal operation of the waste liquid spray gun containing waste mineral oil containing aluminum alkyls, if the grounding success signal is lost due to, for example, accidental loosening or detachment of the electrostatic grounding clamp or human error, the control system automatically disconnects the safety shutoff valve of the waste liquid spray gun pipeline. The waste liquid spray gun can only be restarted after grounding is successfully established. This prevents the accumulation of large amounts of charge within the aluminum alkyl mobile tank and eliminates the possibility of discharge and fire.

[0024] 3. In the present invention, when the scale indicates an empty tank, i.e., the displayed value is the empty tank weight, indicating that the waste mineral oil in the alkyl aluminum mobile tank has been processed, the valve between the inlet and nitrogen pipeline 1 is first closed, and then the valve between the outlet and waste liquid pipeline of the alkyl aluminum mobile tank is closed. This ensures that the waste mineral oil in the alkyl aluminum mobile tank is completely processed and also keeps the waste mineral oil containing the alkyl aluminum in a sealed state under nitrogen, preventing operational accidents such as explosion and combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of the high-hazardous waste liquid feeding and combustion process of the present invention.

[0026] Figure 2 It is a schematic diagram of the high-hazardous waste liquid feeding pipeline of the present invention.

[0027] Reference numerals in the figure: 1. Alkyl aluminum mobile tank; 2. Electrostatic grounding clamp; 3. Nitrogen pipeline 1; 4. Nitrogen pipeline 2; 5. Rotary kiln burner; 6. Rotary kiln; 7. Waste liquid pipeline; 8. Electrostatic grounding alarm; 9. Weighing machine; 10. Combustion-supporting pipeline; 11. Waste liquid spray gun; 12. Gas nozzle; 13. Factory air duct; 14. Fuel gas pipeline; 15. Rotary kiln combustion-supporting fan; 16. Valve. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 and Figure 2 This embodiment discloses a high-risk waste liquid feeding combustion process. A gas nozzle 12 is provided in the burner 5 of the rotary kiln 6. The inlet of the gas nozzle 12 is connected to the fuel gas pipeline 14. The nozzle of the gas nozzle 12 faces the rotary kiln 6. The process includes the following construction steps:

[0030] S1, the waste mineral oil containing a small amount of alkyl aluminum is stored in the alkyl aluminum mobile tank 1, and transported to the nitrogen-transported waste liquid feeding station within the boundary area under nitrogen sealing state. The nitrogen-transported waste liquid feeding station is provided with a weighing device 9, the alkyl aluminum mobile tank 1 is placed on the weighing device 9, and the alkyl aluminum mobile tank 1 is correctly anti-static grounded. The electrostatic grounding clamp 2 is connected to the electrostatic grounding alarm 8. When the grounding success signal of the electrostatic grounding clamp 2 is lost, the electrostatic grounding alarm 8 starts to alarm.

[0031] S2. After the electrostatic grounding clamp 2 is successfully connected to the alkyl aluminum mobile tank 1, the nitrogen pipe 3 is quickly connected to the inlet end of the alkyl aluminum mobile tank 1, and the waste liquid pipeline 7 is quickly connected to the outlet end of the alkyl aluminum mobile tank 1. The outlet end of the waste liquid pipeline 7 is connected to the waste liquid spray gun 11, and the waste liquid spray gun 11 is installed in the burner 5 of the rotary kiln 6, and the nozzle of the waste liquid spray gun 11 is facing the rotary kiln 6.

[0032] S3, first open the valve 16 installed between the inlet end of the alkyl aluminum mobile tank 1 and the nitrogen pipeline 3, then open the valve 16 installed between the outlet end of the alkyl aluminum mobile tank 1 and the waste liquid pipeline 7. The high-pressure nitrogen introduced into the nitrogen pipeline 3 presses the waste mineral oil stored in the alkyl aluminum mobile tank 1 into the waste liquid pipeline 7. The inlet of the waste liquid spray gun 11 is also connected to the factory air pipeline 13. The compressed air introduced into the factory air pipeline 13 is fully mixed with the waste mineral oil in the waste liquid spray gun 11.

[0033] S4, the burner 5 of the rotary kiln 6 is connected to the combustion-supporting pipe 10, and the inlet end of the combustion-supporting pipe 10 is installed with the combustion-supporting fan of the rotary kiln 6; the waste liquid pipeline 7 is branched and connected to the nitrogen pipeline 2 4, and the high-pressure nitrogen introduced into the nitrogen pipeline 2 4 presses the waste mineral oil in the waste liquid pipeline 7 into the burner 5 of the rotary kiln 6, and the compressed air introduced into the combustion-supporting pipe 10 fully atomizes the waste mineral oil in the burner 5 of the rotary kiln 6 to facilitate full combustion;

[0034] S5. After the waste mineral oil in the alkyl aluminum mobile tank 1 is fully burned, the quick-release joints at the inlet and outlet ends of the alkyl aluminum mobile tank 1 and the electrostatic grounding clamp 2 are removed respectively, and the alkyl aluminum mobile tank 1 is transported away from the nitrogen waste liquid feeding station to complete the entire operation step.

[0035] In this embodiment, referring to Figure 2When the scale 9 displays the empty tank weight, valves 16 installed on the inlet and outlet of the alkyl aluminum mobile tank 1, nitrogen pipeline 3, and waste liquid pipeline are closed. The static grounding alarm 8 is connected to the waste liquid control system. When the grounding success signal from the static grounding clamp 2 is lost, the waste liquid control system immediately disconnects the safety shutoff valve of the waste liquid pipeline 7.

[0036] The start sequence control program command of the waste liquid spray gun 11 is executed on the HMI interface, and the waste mineral oil is sprayed from the nozzle of the waste liquid spray gun 11. The shut down sequence control program command of the waste liquid spray gun 11 is executed on the HMI interface, and the waste mineral oil stops spraying from the nozzle of the waste liquid spray gun 11.

[0037] The operating principle of the high-hazardous waste liquid feeding and combustion process disclosed in this embodiment is as follows: High-pressure nitrogen gas introduced through nitrogen pipeline 1 (3) enters the alkyl aluminum mobile tank 1 from the inlet end, and presses waste mineral oil containing the alkyl aluminum into the waste liquid pipeline 7 from its outlet end. High-pressure nitrogen gas introduced through nitrogen pipeline 2 (4) then presses the waste mineral oil into the waste liquid spray gun 11. Compressed air and the waste mineral oil are thoroughly mixed and atomized in the waste liquid spray gun 11, and then sprayed from the waste liquid spray gun 11 into the rotary kiln 6 for complete combustion. Due to the highly active chemical properties of alkyl aluminum, it is transported to the nitrogen waste liquid feeding station within the boundary area under a nitrogen-sealed state, and the alkyl aluminum mobile tank 1 is properly anti-statically grounded, thereby ensuring that the high-hazardous waste liquid is fully and efficiently burned under safe operating conditions.

[0038] When the weighing device 9 displays the empty bottle status, that is, the weight displayed is the weight of the empty tank, it means that the waste mineral oil in the alkyl aluminum mobile tank 1 has been processed. First, close the valve 16 installed at its inlet end and the nitrogen pipeline 3, and then close the valve 16 installed at the outlet end of the alkyl aluminum mobile tank 1 and the waste liquid pipeline 7.

[0039] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-risk waste liquid feeding combustion process, characterized in that: The construction steps include: S1, storing the waste mineral oil containing a small amount of alkyl aluminum in an alkyl aluminum mobile tank (1), transporting it to a nitrogen-transported waste liquid feeding station within the boundary area under a nitrogen-sealed state, and performing a correct anti-static grounding treatment on the alkyl aluminum mobile tank (1); S2, after the electrostatic grounding clamp (2) is successfully connected to the alkyl aluminum mobile tank (1), the nitrogen pipeline (3) is quickly connected to the inlet end of the alkyl aluminum mobile tank (1), the waste liquid pipeline (7) is quickly connected to the outlet end of the alkyl aluminum mobile tank (1), the outlet end of the waste liquid pipeline (7) is connected to the rotary kiln (6) burner (5), the outlet end of the waste liquid pipeline (7) is connected to the waste liquid spray gun (11), the waste liquid spray gun (11) is installed in the rotary kiln (6) burner (5), and the nozzle of the waste liquid spray gun (11) is facing the rotary kiln (6); S3, first open the valve (16) installed between the inlet end of the alkyl aluminum mobile tank (1) and the nitrogen pipeline (3), then open the valve (16) installed between the outlet end of the alkyl aluminum mobile tank (1) and the waste liquid pipeline (7), and the high-pressure nitrogen introduced into the nitrogen pipeline (3) presses the waste mineral oil stored in the alkyl aluminum mobile tank (1) into the waste liquid pipeline (7); S4, the rotary kiln (6) burner (5) is connected to the combustion-supporting pipe (10), and the rotary kiln (6) combustion-supporting blower is installed at the inlet end of the combustion-supporting pipe (10); the waste liquid pipe (7) branch is connected to the nitrogen pipe 2 (4), and the high-pressure nitrogen introduced into the nitrogen pipe 2 (4) presses the waste mineral oil in the waste liquid pipe (7) into the rotary kiln (6) burner (5), and the compressed air introduced into the combustion-supporting pipe (10) enters the rotary kiln (6) burner (5) The waste mineral oil is fully atomized to facilitate full combustion; the inlet of the waste liquid spray gun (11) is also connected to the factory air duct (13), and the compressed air introduced into the factory air duct (13) is fully mixed with the waste mineral oil in the waste liquid spray gun (11); a gas nozzle (12) is also provided in the burner (5) of the rotary kiln (6), the inlet of the gas nozzle (12) is connected to the fuel gas pipeline (14), and the nozzle of the gas nozzle (12) faces the inside of the rotary kiln (6); S5, when the waste mineral oil in the alkyl aluminum mobile tank (1) is fully burned, the quick-release joints and the electrostatic grounding clamp (2) at the inlet and outlet ends of the alkyl aluminum mobile tank (1) are removed respectively, and the alkyl aluminum mobile tank (1) is transported away from the nitrogen waste liquid feeding station, completing the entire operation step.

2. The high-risk waste liquid feeding combustion process according to claim 1 is characterized in that: A weighing device (9) is provided in the nitrogen waste liquid feeding station, and the alkyl aluminum mobile tank (1) is placed on the weighing device (9). When the weighing device (9) displays the weight of the empty tank, the inlet end, the outlet end, the nitrogen pipeline (3) and the valve (16) installed on the waste liquid pipeline of the alkyl aluminum mobile tank (1) are closed.

3. The high-risk waste liquid feeding combustion process according to claim 1, characterized in that: The startup sequence control program command of the waste liquid spray gun (11) is executed on the HMI interface, and the waste mineral oil is sprayed out from the nozzle of the waste liquid spray gun (11).

4. The high-risk waste liquid feeding combustion process according to claim 1, characterized in that: The closing sequence control program command of the waste liquid spray gun (11) is executed on the HMI interface, and the waste mineral oil stops being sprayed from the nozzle of the waste liquid spray gun (11).

5. The high-risk waste liquid feeding combustion process according to claim 2, characterized in that: The electrostatic grounding clamp (2) is connected to an electrostatic grounding alarm (8), and when the grounding success signal of the electrostatic grounding clamp (2) is lost, the electrostatic grounding alarm (8) starts to alarm.

6. The high-risk waste liquid feeding combustion process according to claim 5, characterized in that: The electrostatic grounding alarm (8) is connected to a waste liquid control system. When the grounding success signal of the electrostatic grounding clamp (2) is lost, the waste liquid control system immediately cuts off the safety cut-off valve of the waste liquid pipeline (7).

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