Small air separation FAQ

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

The running cycle of small-sized air separation plant is shorter than that of large-sized air separation plant, which is because small-sized air separation plant has no thorough removal of impurities than large-sized air separation plant. Therefore, in order to prolong the running cycle of the air separation Tower, we must start from the problem of removing moisture, carbon dioxide and grease: 1) most of the moisture in the air is collected during the compression and cooling process of the air compressor, remove in the oil-water separator, and absorb a small amount in the dryer (or purifier. If the amount of water entering the purifier increases, its cleaning load will increase, and the service life will be shortened, and the amount of water brought into the tower will increase. Therefore, it is very important to blow off oil-water separators at all levels correctly regularly. The water content in the compressed air is related to the temperature. Therefore, the cooling effect of the...

After removing the micro metal particles and dust impurities in the air through the air filter, the air enters the svk20-3s type turbine air compressor for 1-3 level compression and cooling to obtain 0. 5MPa normal temperature pressure gas. The liquid nitrogen on the top of the lower tower enters the top of the upper tower as the reflux fluid through the HV-l liquid nitrogen regulating valve after further condensation through the cooler; after the other one passes through the cooler, in front of the HV-1 valve, through the liquid nitrogen liquid level regulating valve, LCv-704 the condensing evaporator of the pure argon Tower as the cold source.

Shaft seal of centrifugal pump

How much argon fraction can the air separation tower extract when producing argon? What are its limitations?

What requirements should be met before the cold test of the inner fractionation pipeline and expander of the air separation unit