The practical teaching of chemical engineering majors is an important part of students' mastery Xi of practical operation ability and problem-solving ability. As an important experimental equipment, the constant pressure filtration experimental device plays a vital role in Xi practice. This paper will introduce in detail the structure of the constant pressure filtration experimental device, the purpose of the experiment, as well as its practical application and achievements in Xi practice.
1. Purpose of the experiment:
1.Understand the construction and operation method of plate and frame filter:
The constant pressure filtration experimental device uses the plate and frame filter as the experimental equipment, and students will learn the structure and operation method of the plate and frame filter Xi, and have an in-depth understanding of its working principle and practical operation steps. They will master the use of fixed-value regulators and safety valves, and be familiar with the functions and functions of each component.
2.Learn Xi method for the determination of constant pressure filtration constant:
Through experiments, students will learn Xi method of determining the constant of constant pressure filtration, which is one of the basic principles of constant pressure filtration. They will explore the significance and measurement techniques of the constant pressure filtration constant in the filtration equation and deepen their understanding of the constant pressure filtration process.
3.*Relationship between wash rate and final filtration rate:
During the lab, students will determine the relationship between the washing rate and the final filtration rate and analyze the factors that may affect this relationship. Through hands-on experiments, they can deepen their understanding of the effects of washing rate determination methods and operating conditions on filtration rates.
4.Understand the effect of operating conditions and pressure on filtration speed and determine the specific resistance
Students will adjust the pressure in operating conditions, study its effect on filtration speed, and determine the value of specific resistance. Through this experiment, they will gain an in-depth understanding of the relationship between the pressure under operating conditions and the filtration speed, and master the measurement technique of specific resistance.
2. Introduction of constant pressure filtration experimental device:
The constant pressure filtration experimental device adopts the plate and frame filter as the core equipment. The unit features a detachable plate-and-frame structure to simulate filtration operations at a constant pressure difference. The device also has a washing process, and students can learn how to measure the washing rate Xi and how to operate it. For pneumatic dosing, the unit is equipped with a constant pressure regulating valve that directs compressed air into a pneumatic stirring pan at the bottom of the pressurized tank. In addition, the device also adopts an ultra-short-time reverse closure system, which effectively prevents students from misoperating and ensures the safety of experiments. In order to facilitate the operation of the experiment, the device is equipped with a water supply and water supply system to ensure the smooth progress of the experimental process.
Device features:1Durable structure: The constant pressure filtration experimental device adopts the European standard aluminum profile frame, which has excellent durability and stability to ensure the long-term stable operation of the equipment.
2.Transparent visualization: The device uses hard transparent visual pipes and transparent soft PVC pipes, so that students can clearly and intuitively observe the experimental phenomena and improve the experimental effect.
3.Quick disassembly connection: The device adopts a quick disassembly connection method, which is convenient for students to carry out loading, unloading and cleaning, and improves the efficiency of experimental operation.
4.Intelligent Xi system: Equipped with an intelligent Xi system, it stimulates students' interest in learning Xi, improves the effect of learning Xi, and cultivates students' awareness of independent learning Xi through pre-Xi d** and ** evaluation tests.
5.Quality guarantee: Provide up to 6 years warranty period to solve users' worries and ensure the reliability and stability of the equipment.
Constant pressure filtration is an efficient and accurate filtration method, which has several advantages. First of all, constant pressure filtration can provide stable filtration results. By adjusting the pressure controller, it can be ensured that the pressure in the filter is always kept at a preset value, so as to keep the working state of the filter stable. This reduces fluctuations in the filtration process and improves the consistency and reliability of filtration.
Secondly, constant pressure filtration can improve the efficiency of filtration. The constant pressure can promote the filter material to be more evenly distributed on the filter media, increase the contact area between the substance and the medium, and thus improve the filtration efficiency. In addition, constant pressure filtration can also reduce clogging and resistance, and extend the service life of the filter media.
In addition, constant pressure filtration has a wide range of applications. It is often used in liquid handling processes in chemical, pharmaceutical, food and other industrial fields. Constant pressure filtration can achieve efficient separation of suspended solids and impurities in liquids, and ensure the quality of products and the stability of the process.
In short, constant pressure filtration is a filtration method with stability, high efficiency and wide application. It can provide stable filtration results, improve filtration efficiency, and play an important role in several industrial fields. Future research and development can further optimize the process parameters and device design of constant pressure filtration to meet the filtration needs in different scenarios.