 Wysłany: Śro 9:09, 13 Kwi 2011 Temat postu: herve leger toronto Polypropylene electrostatic pr |
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| Polypropylene Electrostatic Protection
Result. 1.5 Electrostatic discharge accumulate in the flash tank and hopper discharge port on the static, when the grounding conductor or other discharge may cause accidents (1) spark discharge. Spark discharge occurs in the flash discharge and the discharge hopper and between the human body. Characterized by a bright spark, with some energy. (2) Ray-shaped discharge. When the suspension of polypropylene in the air to form a wide range of charged particles; high electrostatic charge density of the space, it can happen like flash mine discharge, polypropylene, propylene gas that can occur when high-speed mine-shaped spray discharge, the discharge energy is Ray-shaped large, is also a great risk of ignition. 1.6 electrostatic ignition hazard is mainly electrostatic ignition of flammable,mbt laarzen, explosive dust mixture of propylene, followed by the shock of personal injury and property damage. Two basic measures to prevent electrostatic damage to reduce friction from 2.1 to restrict power mainly out of the flow rate of propylene and polypropylene, which can greatly reduce static electricity generation and accumulation. As with the flow rate is proportional to the amount of static electricity, and has nothing to do with the pipe diameter. 2.2 Static grounding the role of electrostatic discharge grounding conductor of static electricity may gather, such as the conductor and the earth potential, so that zero potential difference between conductors. 2.2.1 Direct grounding of the device is electrically grounded by direct ground, namely, the body charged with metal wire to flash tank discharge port, hopper and ground lines connected together. 2.2.2 Indirect Indirect earth ground is to make the polypropylene powder electrostatic grounding, which flows through the polypropylene powder with copper to copper when its static electricity is passed to the copper and then copper lines connected with the ground . 2.3 The regular inspection and manual discharge twice per ground wire with a check to prevent the hopper event to loose by earth, followed by a week to manually flash tank and hopper discharge conductor will flash with the discharge port and vessel conduct a ground hopper discharge. 2.4 The requirements of the body's own discharge when the operator into the packaging position, pull a door or touch a radiator, the body's own discharge. 3 discharge spark control and elimination of risk of 3.1 to prevent the polypropylene powder produces static electricity, thus reducing the discharge spark (1) limit the polypropylene powder in the pipe conveying the speed,ghd piastra, the finer the powder, the more opportunities for friction and collisions more than 52 scientific and technological innovation, and more prone to static electricity Herald ScienceandTechnologyInnovationHerald. Therefore, the finer the powder, the speed should be slower. Specific speed should be based on powder type, air relative humidity; ambient temperature of the wall roughness vary, mainly through the pressure vessel to control the flash. (2) the pipe wall should be smooth, to reduce static build. (3) to increase air flow for each of the doors,Belstaff España, windows open to increase air relative humidity, can reduce the gas content. 3.2 The reduced atmospheric pressure flash vessel thus reducing the propylene and polypropylene and the flow rate, and can reduce the energy of 3.3 after an accident caused by replacement of propylene gas. Process indicators to propylene is extremely flammable and explosive materials, when a small amount of energy will explode when triggered, this is the biggest hazard of static sparks Department. 3.4 persons control (1) the material,herve leger toronto, the hopper shall not have the operator around. (2) to human spark of static electricity. 3.5 workshop proof material transportation issues within the transport for the polypropylene plant a short distance between the internal transport requirements can not be any use of sub-carriers. Replacement requirements of polypropylene powder 3.6 (1) replacement with inert gases: flammable liquid gas replacement may not use compressed air to avoid generating explosive mixtures within the system caused by factors such case of static spark explosion, but the pressure of inert gas can be used to send, vacuum, the vacuum system can not leak, so as not to breathe the air cause an explosion. (2) with non-sparking pumps, pump pressure must be used to send special safety explosion-proof pump. (3) The pump discharge pipe should be extended behind the diameter: the pump should be connected to a speaker out of Yl tube diameter pipes to pump 13 should be greater than the diameter, so that reduced flow in the same flow rate and reduce static electricity generation. In addition to flange pipeline connection system should be inter-connected and grounded. 3.7 Process Control reaction (1) in accordance with the accumulation of the feeding process to prevent the aluminum triethyl burning out of control and the air accident. (2) High-pressure and the pressure to reduce the recovery after the polymerization reactor pressure, reduce the flash when the flow rate and reduce static electricity accumulation. (3) control of reaction conditions, heating rate, pressure indicators are controlled within the process, reduce the risk of accidents. 3.8 Stirring on the flash tank, stirring polymerization reactor to conduct audits and ground, due to the repeated mixing of the polypropylene powder most likely to produce static friction, a good grounding reducing mechanism can eliminate some of the static mixing. 4 Conclusion After the above operation control,mbt chaussures paris, and transformation of four-month test run, the shock does not appear on the phenomenon of people to achieve the expected goal. More articles related to topics： Cut off the blood of the chain _38 mbt chaussure _277 -law and mother-daughter air jordan high heels Vulnerable _4672 |
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