This paper mainly introduces the design of a nitrogen protection explosion-proof system for the application of digital oxygen oximeter in the application of centrifuge in the chemical and pharmaceutical industry.
1. Explosion protection requirements
We know that the three elements that generate explosions are temperature, fire source, oxygen, and the simultaneous existence of three basic conditions to prevent chemical explosion. It is the basic theory for preventing chemical explosion of combustible materials.
(1) Temperature, for a specific medium, whether it is liquid phase or gas phase, the operating temperature of the centrifuge should be considered in the process design, which depends mainly on the process conditions, and will not be elaborated here;
(2) Fire source, in the design of the centrifuge, there should be enough safety air- rotor pump room for moving parts to eliminate possible mechanical friction and impact. At the same time, the machine must have measures to eliminate static electricity. For brake devices, mechanical friction brakes should not be used, generally in the form of electrical energy brakes (non-contact brakes, the disadvantage is that the brake time is longer than the contact type, especially when fully loaded) This is especially true in the case of large inertia.) In addition, for the drive belt, an anti-static belt is used to eliminate or reduce the possibility of static electricity generation;
(3) Oxygen is generally protected by an inert gas. The inside of the centrifuge is filled with nitrogen to replace the air inside, so that the oxygen concentration is maintained within a safe range.
2. Explosion-proof measures
At present, the nitrogen protection of the centrifuge generally used is actually that a nitrogen gas inlet pipe and a nitrogen gas outlet pipe are arranged on the casing, and the inner cavity is filled with nitrogen gas when the centrifuge is in operation. As to whether the nitrogen concentration can reach the safe range, there is no quantitative control, and therefore, the reliability of the nitrogen protection is poor. There is now an improved nitrogen protection system that is equipped with an on-line oxygen detection device and a pressure transmission sensor to detect the oxygen concentration in the centrifuge chamber during operation, to perform quantitative control, and to control the oxygen content within a safe range. .
Anti-Psychotics
Many people always love to use mocking tone to say other people: "You have neuropathy." in real life, It is essentially different with medical psychosis. First of all, it is clear that mental illness is a mental incapacity, behavioral abnormalities as the main features of the disease, regardless of any approach, mental patients have no civil capacity, but also can not be founding, more and more studies show that psychosis is from the pre-born which is a neurological disease caused by a genetic factor (gene) that has changed. The treatment of psychosis mainly take drug, behavioral therapy, work therapy, recreational therapy, psychological treatment and other aspects of grooming to eliminate or reduce the various obstacles to the patient. In addition, diet therapy is also a very good choice.In recent years, anti-psychotropic drugs continue to make a breakthrough, a variety of new drugs emerge in an endless stream, to bring more treatment of mental illness.
Anti-Psychotics Intermediate, Psychotisc Drugs,Anti Psychotics,Antipsychotics for Anxiety and Depression,Amisulpride Intermediate
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