Small air separation FAQ

The spacing between the tower plates determines the height of the whole distillation column. Therefore, it is hoped that the spacing between the tower plates should be as small as possible. Minimum plate spacing 1) liquid flooding should be avoided. That is to say, the plate spacing should be larger than the minimum spacing to ensure that the liquid flows smoothly from the previous plate to the next plate. It is calculated by the flow resistance of the reflux liquid through the overflow bucket. Obviously, it is closely related to the structural form of the overflow bucket and the height of the tower plate inlet baffle; 2) ensure that there is no fog clip. On the tower plate, the steam rises through the sieve hole and the liquid layer bubble, and the mass transfer area on the sieve plate basically consists of the following parts: close to the sieve plate is the static liquid layer, which is very thin; then is the bubble layer; which is the foam layer with honeycomb structure. Due to ...

Why does the time it takes for the oxygen concentrator of the air separation equipment to accumulate liquid during startup differ

What is the cooling capacity of an air separation equipment? How does the oxygen concentrator of an air separation plant cool down?

There are several types of cold insulation materials for air separation equipment and their characteristics

Water cooling tower is a hybrid heat exchanger. The purpose is to lower the temperature of cooling water in the cooling tower after cooling the air, so that the air cooling tower can be recycled. Different types strive to enhance heat transfer, improve cooling effect, and at the same time, flow resistance should be as small as possible, so that water is not easy to scale. The structure of water cooling tower selected by large air separation plant in our country roughly has the following types: 1) stuffing tower. In the early stage, it was a Laci ring with porcelain. Its heat transfer effect was good and the resistance was not big. However, when it is used in the process of self-clearing low pressure, because the switching system is switched once every few minutes, when the switching is emptied, the impact of airflow on the porcelain ring is relatively large, which is easy to cause the damage of the porcelain ring and increase the resistance. Some are also changed into plastic rings ...

Before closing the throttle valve, the conditions for closing the valve should be created: the liquid oxygen liquid level is close to the normal liquid level, and the liquid level has an upward trend. The temperature in front of section-1 valve should be kept at-155 ~ Between-165℃. The low pressure should be controlled at 0.05MPa, and the medium pressure should be less than 0.3MPa (surface pressure ). When you start to close the valve, you should master the speed of closing the valve. If it is closed too fast, it will cause liquid suspension; if it is closed too slowly, it will cause the liquid oxygen level gauge to be too full. The speed of closing valve is based on the principle of stable liquid oxygen level. If the liquid oxygen level rises fast, the valve can be closed faster; if the liquid oxygen level rises slowly, it will close slowly. If the liquid oxygen level has a downward trend, then the valve should be stopped. If the liquid level drops quickly and the medium pressure r...

The main dangerous and harmful factors in workshop workplace are: electric shock, mechanical injury, lifting injury, burning, falling from high places, suffocating poisoning, object strike, noise and vibration. 1. The laying of electric circuit for electric shock is not standardized, and the grounding system is defective, electric equipment has no factors such as electric leakage protection, short circuit protection, overload protection measures, the safety distance of power supply and distribution facilities does not conform to the standard specification, the exposed parts of electric equipment have no screen protection, etc., and it is easy to cause electric shock accidents of operators. Personnel's failure to operate in violation of regulations according to the safety regulations of electrical operation, lack of common sense of safe use of electricity or failure of electrical equipment itself and other reasons may cause electric shock accidents. The room and the master control ma...

What are the regulations on the quality of oxygen products in China

What factors are related to the load regulation range of low-pressure air separation equipment

Cause and elimination method of oil leakage failure of air compressor of air separation plant: There are three types of common failures in the use of air compressor: oil leakage failure, overheating failure and abnormal sound failure, which are analyzed and solved by classification below. Failure phenomenon: in the daily operation of the air compressor, the oil leakage phenomenon of the air compressor often occurs, and lubricating oil overflows outside. Cause of failure: 1. Oil seal falls off or oil seal defects leak oil. 2. The loose and open main shaft causes oil seal leakage. 3. The joint surface leaks, and the inlet and return oil pipe joints are loose. 4. If the belt is installed too tightly, the bearing bush will be worn. 5. Casting or processing defects can also cause oil leakage of the air compressor. Exclusion method: 1. When the air compressor leaks oil, pay attention to observing the oil seal position, and check whether the oil seal is cracked, and whether the inner lip i...

The flow integrator is used together with the flow meter and accumulates the total amount of fluid flowing through the pipeline within a certain period of time. The usage of the integrator is as follows: 1) calculate the integrator constant K. The meaning of K is the traffic value represented by each word (unit count) of the integrator. K = qv, max/R in the formula qv, max -- the maximum scale of the flow meter matched with the integrator; R -- when the input flow is qv, max, the number of words passed by the integrator within 1 hour is called integrator constant. 2) calculate the traffic. In a certain time interval, the difference of two reading times of the integrator multiplies the integral constant K, which is the total flow during this period of time. Use the formula to express: qv = (R2-R1) K in the formula K -- integral constant: R1 -- the first reading of the integrator; R2 -- the second reading of the integrator. For example, when the maximum scale of the flow meter used by...

When is the appropriate time for the expansion air to be sent to the tower during the start-up phase of the sub equipment