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Features of the device:
1. The entire device is beautiful and elegant, with reasonable structural design and strong sense of integrity, which can fully embody the concept of modern experimental devices.
3. The entire equipment is a self-propelled frame structure and is equipped with restr*ning feet to facilitate disassembly, m*ntenance and transportation of the system.
4. The tower body, condenser and storage tank are all made of 304 st*nless steel, with fine craftsmanship and excellent production.
5. The feed liquid exchanges heat with the tower bottom liquid to realize the reuse of waste heat and embody the engineering concept of making full use of heat energy in the distillation process.
6. Precisely control the reflux ratio manually and automatically, enabling full and partial reflux operations.
7. Adopt ingenious structural design to control the liquid level of the tower kettle to prevent the electric heater from dry burning.
8. The device design allows for 360-degree observation, enabling all-round teaching and experimentation.
Device functions:
1. Understand the basic structure and working principle of the packed distillation tower experimental device, and master its operating methods;
2. The tower body is transparent and visible, and the working status in the tower can be observed;
3. The feed can be heated with the liquid in the tower still exchange to realize waste heat reuse;
4. The reflux ratio can be automatically controlled, and the impact on the system temperature stability under full reflux and different reflux ratios can be observed;
5. The flow status of the experimental medium in the pipeline and rotameter is clearly visible;
6 , full touch integrated control, highly stable data transmission, and hardware encryption.
Design parameters:
Normal pressure operation.
Rising steam volume: 2L/h.
Reflow ratio: 4--∞.
Concentration at the top of the tower ≥ 80%
Public facilities:
Water: The device requires cooling water. The tap water enters the condenser at the top of the tower through the device interface and the rotor flowmeter and is discharged.
Electricity: Voltage AC220V, power 2.0KW, standard single-phase three-wire system. Each laboratory needs to be equipped with 1~2 grounding points (safety ground and signal ground).
Experimental materials: ethanol-water, external equipment: Abbe refractometer, super thermostat, ethanol (prepared by user).
M*n equipment:
1. 304 st*nless steel tower body: φ30×1200mm, with adjustable feeding position. Each tower section is equipped with a feeding port and a sampling port, and is equipped with regular φ3*3 Raschig ring packing.
2. 304 st*nless steel reboiler: The reboiler is placed directly at the bottom of the distillation tower and is made of st*nless steel with built-in electric heating tube for heating. The total heating power is 2000W, adjustable; divided into two groups, each with 1000W. The two groups are automatically controlled by advanced temperature control instruments and are responsible for the temperature control and adjustment of the distillation tower.
3. Total condenser at the top of the tower: coil type, 304 sanitary grade st*nless steel, size φ89×300mm. The heat exchange area is 0.028m2, and the lower part of the condenser is directly connected to the distillation tower to reduce heat loss.
4. Pipeline: transparent, temperature resistant to 120°C, and corrosion resistant.
5. Rotameter: transparent and visible, 16-160L/h.
6. Raw material tanks and product tanks: glass, 4L, can be sealed.
7. Liquid level sensor , 400mm plug-in liquid level meter, 4-20mA remote transmission output, flow detection mechanism .
8. Tower kettle pressure: pressure sensor, measurement range: 0-20KPa, accuracy level 0.5.
9. Feed metering pump, feed volume: 2.5-25L/h.
10. Return flow system: The return flow ratio is controlled by two 24V solenoid valves and time relay.
11. Temperature sensor: Pt100, resolution 0.1℃, accuracy 0.5%. The insertion length is adjustable, the diameter is φ3mm
12. Electrical appliances: contactors, switches, leakage protection *r switches.
13. Central processing unit: execution speed 0.64μs, memory capacity 16K, function: data processing operations.
14. Analog module: up to 16-bit resolution, sum accuracy ±0.5%, built-in RS485 communication mode.
15. Temperature module: resolution 0.1℃, accuracy 0.5%, built-in RS485 communication mode.
16. Use an all-in-one tablet touch computer to control the whole process with digital touch screen. HMI: Projected touch technology, 50 million touch points, 2G memory, function: central processor data display control.
17. Rated voltage: 380V, total power: 3.5kW, mass: about 150 kg
12. Dimensions: 1600*550*1600mm (length × width × height), movable design, with brake wheels, high quality aluminum Alloy profile frame, no welding points, easy installation and disassembly, horizontally adjustable support casters.
13. Engineering identification: It includes equipment tags, pipeline flow direction arrows and logos, valve tags and other engineering equipment concepts, so that students can be in a safe experimental operating environment, learn to recognize engineering pipeline signs, and cultivate students' engineering skills. concept.
14. Virtual simulation software for electrical installation of building buildings and smart buildings. Based on unity3d design, users can choose different interactive interface sizes according to computer configuration, and six levels of image quality are av*lable. The model in the software can be rotated 360°, enlarged, reduced, and translated. There are assistant prompts during the use of the software, and the content is as follows: A. Wet alarm system 1. System overview: Overview of wet alarm system
2. Equipment awareness: equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 6 multiple-choice questions, prompts for correct and incorrect choices), schematic diagram (can be entered from the schematic diagram) into the device). Equipment includes: nozzle, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pipe pressure gauge, high water tank, Wia control cabinet, pressure stabilizing tank, flow switch, terminal water testing device, dr*nage facilities, water pump connection alarms, hydraulic alarms, delayers, wet alarms, butterfly valves, check valves, fire pumps, safety pressure regulators, and fire pools.
3. Principle display: Show the working principle of the wet alarm system, three-dimensional animation demonstration, the three-dimensional model is translucent, and the internal water flow can be seen. Equipped with a practice module (built-in 4 multiple-choice questions, with prompts for correct and incorrect choices)
4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score will be displayed after submission
B. Gas fire extinguishing system
1. System overview: Overview of gas fire extinguishing system
2. Equipment awareness: equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 8 multiple-choice questions, with prompts for correct and incorrect choices), Schematic diagram (access to the device from the schematic diagram). Equipment includes: nozzle, HFC-227 storage bottle, bottle head valve, heptafluoropropane one-way valve, high-pressure hose, gas one-way valve, safety valve, weighing alarm, electromagnetic starter, selection valve, smoke alarm, fire Alarm controller.
3. Principle display: Show the working principle of the gas fire extinguishing system, three-dimensional animation demonstration, the three-dimensional model is translucent, and the internal gas can be seen. Equipped with a practice module (built-in 3 multiple-choice questions, with prompts for both correct and incorrect choices)
4. Design and layout: There are 6 multiple-choice questions, each question is scored, and the correct answer and score will be displayed after submission.
C. Escape drill: adopted Teaching is conducted in the form of fun games. Escape from the burning room within a limited time. If you make a wrong choice, you will directly enter the score interface.
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