A viscous waste fluid delivery system

Abstract

The utility model discloses a kind of viscous waste liquid conveying systems, it is related to waste liquid treatment technical field of incinerator, including: waste liquid storage unit for classified storage waste liquid;Transport unit is classified to the classified storage waste liquid classification transport;For the intermediate treatment unit of waste liquid that transport unit transports;According to waste liquid type, steam heat tracing and heat preservation pipeline auxiliary unit;For the waste liquid atomization after incineration treatment after intermediate treatment is carried out;For the waste gas treatment unit of gas generated when waste liquid intermediate treatment is further processed;For centralized monitoring and automatic control control system, the utility model is stored and transported by different characteristics waste liquid classification, effectively avoid the property change, jam and uneven transport etc. Problem that occurs in waste liquid in storage and transport process, guarantee the stability and reliability of waste liquid transport.

Description

Technical Field

[0001] This utility model relates to the field of incinerator waste liquid treatment technology, specifically a viscous waste liquid conveying system. Background Technology

[0002] Industrial production processes generate a large amount of viscous waste liquids with different characteristics, including low-calorific-value saline wastewater, ordinary high-calorific-value waste liquids, and high-viscosity reactor residues. These waste liquids usually need to be transported to incinerators through a special conveying system for harmless treatment in order to meet environmental emission requirements.

[0003] Currently, there are various waste liquid transportation systems and methods in the incinerator industry. Some systems use a single pumping method, which can only be used for transporting ordinary low-viscosity waste liquids. Other systems have tried to introduce pneumatic-assisted transportation technology, but for waste liquids with different characteristics (such as low-calorific-value saline wastewater, ordinary high-calorific-value waste liquids, and high-viscosity residues), there is a lack of dedicated storage and transportation equipment. This can easily lead to changes in the properties of the waste liquid during storage, or problems such as blockage and uneven transportation during transportation, thus affecting the stability of waste liquid transmission. Utility Model Content

[0004] The purpose of this invention is to provide a viscous waste liquid conveying system that effectively avoids problems such as property changes, blockages, and uneven conveying of waste liquid during storage and transportation, ensuring the stability and reliability of waste liquid conveying, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a viscous waste liquid conveying system, comprising: a waste liquid storage unit for classifying and storing waste liquid; A conveying unit for the classified transport of waste liquids stored separately; An intermediate processing unit used for intermediate treatment of waste liquid conveyed by the conveying unit; Piping auxiliary units that provide steam tracing and insulation based on the type of waste liquid; Atomized incineration unit used to atomize intermediate-treated waste liquid for incineration. A waste gas treatment unit for further processing of gases generated during intermediate waste liquid treatment; A control system for centralized monitoring and automatic control, wherein the control system is electrically connected to the waste liquid storage unit, the conveying unit, the intermediate processing unit, the pipeline auxiliary unit, the atomization incineration unit and the waste gas treatment unit respectively.

[0006] Preferably, the waste liquid storage unit includes multiple dedicated storage tanks for storing low-calorific-value saline wastewater, ordinary high-calorific-value waste liquid and high-viscosity reactor residue, respectively, and each dedicated storage tank is equipped with a pressure safety valve and a pressure gauge.

[0007] Preferably, the conveying unit includes multiple conveying pumps that are respectively connected to multiple dedicated storage tanks via transmission pipes. The conveying pumps are horizontal pumps, and open impellers are installed inside the pumps. The pumps used for conveying high-viscosity reactor residues are equipped with heat-insulating structures.

[0008] Preferably, the intermediate processing unit includes multiple waste liquid intermediate tanks that are respectively connected to a delivery pump. A stirring mechanism is installed inside each waste liquid intermediate tank. The stirring mechanism is driven by a geared motor and equipped with a frequency converter. The bottom of the waste liquid intermediate tank is connected to an atomizing incineration unit through a waste liquid pressurization pump.

[0009] Preferably, the pipeline auxiliary unit includes a steam pipeline connected to the bottom of the waste liquid intermediate tank and the inlet end of the waste liquid pressurizing pump. The outlet end of the waste liquid pressurizing pump is connected to a steam drain pipe. The transmission pipe, steam pipeline and steam drain pipe are all wrapped with aluminum silicate insulation cotton, and steam purging interfaces are reserved on the transmission pipe, steam pipeline and steam drain pipe.

[0010] Preferably, the atomizing incineration unit includes an atomizer nozzle connected to the outlet of a waste liquid pressurizing pump. The inlet of the atomizer nozzle is connected to a nitrogen pipeline via a three-way pipe. A gas valve is installed on the nitrogen pipeline. The other two ends of the three-way pipe are respectively connected to the outlets of the waste liquid pressurizing pump and a special storage tank. The spray end of the atomizer nozzle is connected to an incinerator.

[0011] Preferably, the waste gas treatment unit includes a gas breathing valve connected to the upper end of the waste liquid intermediate tank, and the outlet end of the gas breathing valve is connected to the inlet of the secondary oxygen supplementation fan of the incinerator through a gas transmission header.

[0012] Preferably, the control system includes a controller and temperature sensors, pressure sensors, and flow sensors installed on a dedicated storage tank, a waste liquid intermediate tank, a transfer pipe, a steam pipeline, and a steam discharge pipe. The controller is electrically connected to the temperature sensors, pressure sensors, flow sensors, a transfer pump, a waste liquid pressurization pump, and a gas valve, respectively.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the coordinated operation of a waste liquid storage unit, a conveying unit, an intermediate processing unit, a pipeline auxiliary unit, an atomization incineration unit, a waste gas treatment unit, and a control system, effectively avoids problems such as property changes, blockages, and uneven conveying of waste liquids during storage and transportation by classifying and storing and conveying waste liquids with different characteristics, thus ensuring the stability and reliability of waste liquid transportation.

[0014] 2. By setting up a pipeline auxiliary unit, this utility model can promptly purge the pipeline and discharge residual waste liquid, effectively preventing pipeline blockage and corrosion, reducing the problem of viscosity increase caused by temperature drop, reducing the risk of pipeline blockage, and improving transportation efficiency.

[0015] 3. By setting up an atomizing incineration unit, this utility model makes the atomized droplets smaller and more uniform in size, allowing the waste liquid to burn more completely in the incinerator, improving incineration efficiency, reducing the emission of harmful gases, and benefiting environmental protection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the conveying pipeline for the special storage tank of this utility model for storing low-calorific-value saline wastewater; Figure 2 This is a schematic diagram of the conveying pipeline of the special storage tank for storing high-viscosity autoclave residues according to this utility model; Figure 3 This is a schematic diagram of the conveying pipeline of the special storage tank for storing ordinary high-calorific-value waste liquid according to this utility model; Figure 4 This is a schematic diagram of the conveying pipeline for multiple intermediate waste liquid tanks according to this utility model; Figure 5 This is a system structure block diagram of the present invention.

[0017] In the diagram: 1. Special storage tank; 2. Transfer pump; 3. Waste liquid intermediate tank; 4. Waste liquid pressurization pump; 5. Steam pipeline; 6. Steam drain pipe; 7. Atomizer spray gun; 8. Gas main pipeline; 9. Nitrogen pipeline. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 This utility model provides a technical solution: a viscous waste liquid conveying system, including a waste liquid storage unit, a conveying unit, an intermediate processing unit, a pipeline auxiliary unit, an atomization incineration unit, a waste gas treatment unit and a control system, wherein the control system is electrically connected to the waste liquid storage unit, the conveying unit, the intermediate processing unit, the pipeline auxiliary unit, the atomization incineration unit and the waste gas treatment unit respectively.

[0020] The waste liquid storage unit is used to store waste liquid in categories; the waste liquid storage unit includes multiple special storage tanks 1 for storing low-calorific-value saline wastewater, ordinary high-calorific-value waste liquid and high-viscosity autoclave residue respectively. Each special storage tank 1 is equipped with a pressure safety valve and a pressure gauge. The special storage tank 1 is designed according to the characteristics of the waste liquid. The special storage tank 1 for high-viscosity autoclave residue needs to have a heat tracing function to ensure its viscosity stability during storage. The conveying unit is used for the classified conveying of waste liquid stored separately; the conveying unit includes multiple conveying pumps 2, each connected to a transfer pipe of a multiple dedicated storage tank 1. The conveying pumps 2 are horizontal pumps, and each conveying pump 2 is equipped with an open impeller, such as... Figure 2 As shown, the transfer pump 2 used for conveying high-viscosity reactor residue is equipped with a heat preservation structure. The heat preservation structure includes a steam inlet pipe and a steam outlet pipe that are insulated from the transfer pump. An insulation cavity is provided inside the pump casing to keep the conveyed waste liquid warm. Both the steam inlet pipe and the steam outlet pipe are connected to the insulation cavity, and control valves are installed on both the steam inlet pipe and the steam outlet pipe. Figure 3 As shown, a special storage tank 1 for transporting ordinary high-calorific-value waste liquid is equipped with two transfer pumps 2. The inlet end of one transfer pump 2 is connected to the special storage tank 1, and the outlet end is connected to the transfer unit. The inlet end of the other transfer pump 2 is connected to the outlet end of the first transfer pump 2, and the outlet end is connected to the pipeline connecting the first transfer pump 2 to the transfer unit. The intermediate processing unit is used to perform intermediate processing on the waste liquid transported by the conveying unit. The intermediate processing unit includes multiple intermediate waste liquid tanks 3, each connected to the conveying pump 2. Each intermediate waste liquid tank 3 is equipped with a stirring mechanism, which is a stirring rod rotatably mounted on the intermediate waste liquid tank 3. The lower end of the stirring rod is fixed with stirring blades. The stirring mechanism is driven by a geared motor, and the geared motor is equipped with a frequency converter. The bottom of the intermediate waste liquid tank 3 is connected to the atomizing incineration unit through a waste liquid pressurization pump 4. The intermediate waste liquid tank 3 is a 10 cubic meter enamel-lined reactor with a steel plate thickness of 18 mm and an enamel thickness of 1 mm. The working pressure inside the reactor and in the jacket is 0.6 MPa. The speed of the geared motor is 110 rpm. The intermediate waste liquid tank 3 uses a combination of weighing and differential pressure level measurement for waste liquid measurement. It is equipped with temperature detection, pressure detection, and steam purging interfaces. Multiple intermediate waste liquid tanks 3 have the same function and can be switched between each other.

[0021] When transporting waste liquid, the pump body parameters are matched according to the characteristics of the waste liquid. The open impeller is suitable for high viscosity and particulate waste liquid. The high viscosity residue transfer pump 2 reduces temperature loss through the heat preservation structure. Different types of waste liquid are transported from the special storage tank 1 to the intermediate waste liquid tank 3 to meet the different waste liquid transport needs. The pipeline auxiliary unit provides steam heating and insulation according to the type of waste liquid. The pipeline auxiliary unit includes a steam pipeline 5 connected to the bottom of the intermediate waste liquid tank 3 and the inlet of the waste liquid pressurizing pump 4. The outlet of the waste liquid pressurizing pump 4 is connected to a steam drain pipe 6. The transmission pipe, steam pipeline 5 and steam drain pipe 6 are all wrapped with aluminum silicate insulation cotton. The viscous waste liquid pipelines outside and inside the boundary area are all steam heated and wrapped with aluminum silicate (GB / T6400-2023 / 1 ordinary type) insulation cotton. The outer protective plate is made of 0.4mm 304 board. Steam purging interfaces are reserved on the transmission pipe, steam pipeline 5 and steam drain pipe 6. A drain valve is installed at the lowest point of the pipeline. The atomizing incineration unit is used to atomize the intermediate-treated waste liquid for incineration. The atomizing incineration unit includes an atomizer nozzle 7 connected to the outlet of the waste liquid pressurizing pump 4. The inlet of the atomizer nozzle 7 is connected to a nitrogen pipeline 9 via a three-way pipe. A gas valve is installed on the nitrogen pipeline 9, and the other two ends of the three-way pipe are respectively connected to the outlets of the waste liquid pressurizing pump 4 and the dedicated storage tank 1. The spray end of the atomizer nozzle 7 is connected to the incinerator. The atomizer nozzle 7 is a high-efficiency stainless steel atomizer nozzle and is a two-fluid atomizing nozzle. The combustion chamber is equipped with three 500kg / h spray guns, and three 750kg / h high-efficiency Hastelloy atomizers are also prepared. The basic structure of the atomizer spray gun 7 includes the gun body, nozzle three-piece set and control components. The flow rate of the spray gun can be adjusted by adjusting the liquid regulating valve and atomization pressure. The inlet of the atomizer spray gun 7 is equipped with a three-way pipe. One end of the three-way pipe is connected to the waste liquid pressurization pump 4, one end is connected to the outlet of the special storage tank 1, and the other end is connected to the nitrogen pipeline. In an emergency, the nitrogen pressure of the nitrogen can be used as the power for atomization of the atomizer spray gun 7 through the bypass to achieve atomization. The waste gas treatment unit is used to further treat the gas generated during the intermediate treatment of waste liquid; the waste gas treatment unit includes a gas breathing valve connected to the upper end of the intermediate waste liquid tank 3, and the outlet end of the gas breathing valve is connected to the inlet of the secondary oxygen supplementation fan of the incinerator through the gas transmission header 8.

[0022] The control system is used for centralized monitoring and automatic control. The control system includes a controller and temperature sensors, pressure sensors, and flow sensors installed on the dedicated storage tank 1, the intermediate waste liquid tank 3, the transmission pipe, the steam pipeline 5, and the steam discharge pipe. The controller is electrically connected to the temperature sensors, pressure sensors, flow sensors, the delivery pump 2, the waste liquid pressurizing pump 4, and the gas valve. The controller adopts a PLC controller and collects the system operating parameters in real time through the temperature sensors, pressure sensors, and flow sensors. Based on the collected parameters, it automatically adjusts the speed of the delivery pump 2, the opening degree of the valve, the intensity of steam heating, and the atomization pressure of the spray gun, etc., to ensure that each link of the system operates according to the set process requirements. At the same time, it realizes the switching control between the intermediate waste liquid tanks 3 and automatically switches to nitrogen pressure delivery mode in emergency situations. Low-calorific-value saline wastewater, ordinary high-calorific-value waste liquid, and high-viscosity autoclave residue are stored in their respective dedicated storage tanks 1. The waste liquid is transported from the dedicated storage tanks 1 to the intermediate waste liquid tank 3 in the incinerator area by the transfer pump 2. During the transportation process, the transportation pipelines for special waste liquids such as high-viscosity autoclave residue are equipped with steam heating and insulation measures. After the waste liquid is temporarily stored and treated in the intermediate waste liquid tank 3, it is then transported to the atomizer spray gun 7 by the waste liquid pressurization pump 4. After being atomized by the atomizer spray gun 7, it is sent to the incinerator for incineration.

[0023] During waste liquid storage: Low-calorific-value saline wastewater, ordinary high-calorific-value waste liquid, and high-viscosity reactor residue are respectively injected into their respective dedicated storage tanks 1 for storage. The high-viscosity reactor residue storage tank is heated by turning on the heating device to maintain the temperature at ≤160℃ to ensure that its viscosity meets the transportation requirements. When the waste liquid is transported to the intermediate tank: According to the data of each transmission channel, the transmission pump 2 on each channel is started to transport the waste liquid in different special storage tanks 1 to the waste liquid intermediate tank 3 in the incinerator area according to the set flow rate. During the transportation process, the high viscosity residue transportation pipeline is heated by steam, and the temperature inside the pipeline is monitored in real time by temperature sensor to ensure temperature stability and prevent viscosity increase. During intermediate tank processing: After the waste liquid enters the intermediate waste liquid tank 3, the stirring device is started, and the geared motor runs at a speed of 110 rpm. The speed can be adjusted by the frequency converter to ensure that the waste liquid is mixed evenly. The amount of waste liquid added is accurately measured by a combination of weighing and differential pressure level measurement. At the same time, the temperature and pressure inside the tank are monitored in real time by temperature and pressure detection devices. When the pressure or temperature exceeds the set range, the steam purging interface is automatically activated to maintain the normal environment inside the tank. The three intermediate waste liquid tanks 3 can be switched with each other according to the operating requirements to ensure continuous operation of the system.

[0024] Waste liquid is transported to atomizer spray gun 7: After starting the waste liquid intermediate tank 3, the waste liquid pressurization pump 4 is started to transport the waste liquid in the waste liquid intermediate tank 3 to the atomizer spray gun 7. The waste liquid pressurization pump 4 is a chemical-specific horizontal pump. Its open impeller design can adapt to waste liquid containing particulate matter and reduce wear. During the transportation process, the flow rate is monitored by a flow sensor to ensure that the flow rate is stable at about 4000 kg / h. Atomization incineration: After the waste liquid reaches the spray gun, it adopts a two-fluid atomization method. By adjusting the liquid regulating valve and atomization pressure, the flow rate of the spray gun is made to meet the requirements. That is, the three 500kg / h spray guns in the combustion chamber are working normally, and the three 750kg / h spray guns can be switched and used when needed. The extremely fine droplets enter the incinerator for complete combustion, improving the incineration efficiency.

[0025] Pipeline purging and drainage: When a waste liquid pipeline temporarily stops transporting materials, open the steam purging port and use steam to purge the pipeline. At the same time, open the drainage valve at the lowest point of the pipeline to drain the residual waste liquid in the pipeline and prevent pipeline blockage and corrosion.

[0026] Waste gas treatment: The gas volatilized from the waste liquid in each intermediate waste liquid tank 3 is collected by the breather valve into the gas transmission header 8 and then sent to the inlet of the secondary oxygen supplement fan of the incinerator. It enters the incinerator for secondary combustion treatment, so as to achieve the harmless treatment of waste gas and energy recovery.

[0027] Emergency Handling: In case of emergencies such as power outages, the three-way valve at the inlet of the waste liquid pressurization pump 4 automatically switches, using nitrogen pressure as the power source for atomization of the spray gun via the nitrogen pipeline. The waste liquid is atomized through a bypass (without passing through the pump), ensuring the continuity of the incineration process and preventing safety accidents caused by sudden interruptions. Through the above specific implementation methods, this viscous waste liquid transportation system can achieve safe, efficient, and stable transportation and treatment of waste liquids with different characteristics in the incinerator industry. The coordinated operation of each link significantly improves waste liquid incineration efficiency and reduces safety risks and environmental pollution.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A viscous waste liquid conveying system, characterized in that: include: Waste liquid storage unit for classifying and storing waste liquid; A conveying unit for the classified transport of waste liquids stored separately; An intermediate processing unit used for intermediate treatment of waste liquid conveyed by the conveying unit; Piping auxiliary units that provide steam tracing and insulation based on the type of waste liquid; Atomized incineration unit used to atomize intermediate-treated waste liquid for incineration. A waste gas treatment unit used for further processing of gases generated during intermediate waste liquid treatment; A control system for centralized monitoring and automatic control, wherein the control system is electrically connected to the waste liquid storage unit, the conveying unit, the intermediate processing unit, the pipeline auxiliary unit, the atomization incineration unit and the waste gas treatment unit respectively.

2. The viscous waste liquid conveying system according to claim 1, characterized in that: The waste liquid storage unit includes multiple dedicated storage tanks for storing low-calorific-value saline wastewater, ordinary high-calorific-value waste liquid, and high-viscosity reactor residue, respectively. Each dedicated storage tank is equipped with a pressure safety valve and a pressure gauge.

3. The viscous waste liquid conveying system according to claim 2, characterized in that: The conveying unit includes multiple conveying pumps that are connected to multiple dedicated storage tanks via transmission pipes. The conveying pumps are horizontal pumps with open impellers inside. The conveying pumps used for conveying high-viscosity reactor residues are equipped with heat-insulating structures.

4. The viscous waste liquid conveying system according to claim 3, characterized in that: The intermediate processing unit includes multiple waste liquid intermediate tanks, each connected to a transfer pump. A stirring mechanism is installed inside each waste liquid intermediate tank. The stirring mechanism is driven by a geared motor, which is equipped with a frequency converter. The bottom of each waste liquid intermediate tank is connected to an atomizing incineration unit via a waste liquid pressurization pump.

5. A viscous waste liquid conveying system according to claim 4, characterized in that: The pipeline auxiliary unit includes a steam pipeline connected to the bottom of the waste liquid intermediate tank and the inlet end of the waste liquid pressurization pump. The outlet end of the waste liquid pressurization pump is connected to a steam drain pipe. The transmission pipe, steam pipeline and steam drain pipe are all wrapped with aluminum silicate insulation cotton, and steam purging interfaces are reserved on the transmission pipe, steam pipeline and steam drain pipe.

6. A viscous waste liquid conveying system according to claim 5, characterized in that: The atomizing incineration unit includes an atomizer nozzle connected to the outlet of a waste liquid pressurizing pump. The inlet of the atomizer nozzle is connected to a nitrogen pipeline via a three-way pipe. A gas valve is installed on the nitrogen pipeline. The other two ends of the three-way pipe are connected to the outlets of the waste liquid pressurizing pump and a special storage tank, respectively. The spray end of the atomizer nozzle is connected to an incinerator.

7. A viscous waste liquid conveying system according to claim 6, characterized in that: The waste gas treatment unit includes a gas breathing valve connected to the upper end of the waste liquid intermediate tank. The outlet end of the gas breathing valve is connected to the inlet of the secondary oxygen supplementation fan of the incinerator through a gas transmission header.

8. A viscous waste liquid conveying system according to claim 7, characterized in that: The control system includes a controller and temperature sensors, pressure sensors, and flow sensors installed on a dedicated storage tank, a waste liquid intermediate tank, a transmission pipe, a steam pipeline, and a steam discharge pipe. The controller is electrically connected to the temperature sensor, pressure sensor, flow sensor, delivery pump, waste liquid pressurization pump, and gas valve, respectively.

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