May 12
At present, commercial production of thin-film silicon solar cells are mainly classified into amorphous silicon (a-Si) thin film and amorphous / microcrystalline silicon (a-Si / μc-Si) thin-film stack. First of all, its production process in the manufacture of glass substrates on Transparent Conductive Oxide (TCO), and then through the PE CVD method of deposition of p-, i-type and n-type films, the last to do the back electrode by sputtering. Preparation of the current industrialization TCO sputtering method (Sputter) and chemical vapor deposition (CVD), laptop battery were formed on glass substrates in ZnO: Al or ZnO thin film. Chemical Vapor Deposition of raw materials used diethylzinc (DEZn), its reaction with water to generate ZnO and C2H6.
DEZn is a colorless liquid chemicals, the density of 1198kg/m3, with spontaneous combustion, and water reactive, toxic and other special hazards. DEZn spontaneous combustion in the air to generate Z n O powder, C O2 and H2O, easily lead to burns. Violent reaction occurred with water to produce ZnO powder and C2H6 gas. ZnO on which aquatic organisms are highly toxic, the aquatic environment will have a long-term adverse effects. ZnO powder is also easily lead to transmission equipment and plug the pipeline. DEZn chemical stability is very low, at 70 ℃ or above begins to decompose at 120 ℃ higher than the decomposition products, including Zn, C2H6, C2H4 and H2, etc., toshiba battery would lead to overheating of the explosion vessel. Therefore, it is necessary from the engineering design, operation and maintenance and emergency response measures taken to prevent the accident.
DEZn transportation system in the design, first of all an analysis of harm should, through the intrinsically safe design, the elimination of potential safety problems. Secondly, the use of hands to prevent the accident monitoring. Finally, the use of mitigation measures to reduce the consequences of the accident. DEZn for the special nature of the security control system design, process control and purity control technology has taken special measures to realize the material within the cylinder DEZn, security for equipment transported to TCO.
Safety control system valve SS316L pipeline materials, IBM battery and pressure testing and helium leak detection to ensure the integrity of the machinery. DEZn cylinder and control panel placed in the explosion-proof ventilation cabinet shell to prevent leakage to the outside environment. High-temperature cabinet set up a shell and flame detector detectors, fire warning issued in a timely manner, and to cut off the supply of DEZn. Dry powder fire-fighting equipment for a timely counter shell fire fight. The use of automatic valve to ensure that when the fire broke out with factory isolated ventilation system to prevent the spread of fire along the duct.
Process control, through the regulator nitrogen, Acer battery the cylinder in a smooth delivery DEZn to the use of equipment. Pressure sensors can monitor pressure conveying system. Electronic scale to monitor weight cylinders to ensure a continuous supply of DEZn. Equipment using pneumatic valves, to achieve fully automatic operation through PLC.
Purity control system S S316L stainless steel material, and polished by electrolysis. Process valves are valve and connected to VCR. Also taken into account to prevent the decomposition of DEZ n particles caused by congestion. Operation of the site should be equipped with suitable personal protective equipment (PPE) and emergency response equipment and escape routes clearly marked. DEZn operation requires the preparation of and strictly follow the Standard Operating Procedure (SOP), has been done to confirm each step.
DEZn water due to severe reactions occurred, as well as spontaneous combustion in the air, to detect and cut off the source of leakage is to prevent the fire to expand the means of the most fundamental. The solution for the fire station is mainly isolated from contact with air DEZn, are commonly used dry powder fire extinguishing agent, A42-A3 battery vermiculite, sand, perlite, etc., prohibiting the use of Halon fire extinguishers, water, foam fire extinguishing agent.
DEZn is a colorless liquid chemicals, the density of 1198kg/m3, with spontaneous combustion, and water reactive, toxic and other special hazards. DEZn spontaneous combustion in the air to generate Z n O powder, C O2 and H2O, easily lead to burns. Violent reaction occurred with water to produce ZnO powder and C2H6 gas. ZnO on which aquatic organisms are highly toxic, the aquatic environment will have a long-term adverse effects. ZnO powder is also easily lead to transmission equipment and plug the pipeline. DEZn chemical stability is very low, at 70 ℃ or above begins to decompose at 120 ℃ higher than the decomposition products, including Zn, C2H6, C2H4 and H2, etc., toshiba battery would lead to overheating of the explosion vessel. Therefore, it is necessary from the engineering design, operation and maintenance and emergency response measures taken to prevent the accident.
DEZn transportation system in the design, first of all an analysis of harm should, through the intrinsically safe design, the elimination of potential safety problems. Secondly, the use of hands to prevent the accident monitoring. Finally, the use of mitigation measures to reduce the consequences of the accident. DEZn for the special nature of the security control system design, process control and purity control technology has taken special measures to realize the material within the cylinder DEZn, security for equipment transported to TCO.
Safety control system valve SS316L pipeline materials, IBM battery and pressure testing and helium leak detection to ensure the integrity of the machinery. DEZn cylinder and control panel placed in the explosion-proof ventilation cabinet shell to prevent leakage to the outside environment. High-temperature cabinet set up a shell and flame detector detectors, fire warning issued in a timely manner, and to cut off the supply of DEZn. Dry powder fire-fighting equipment for a timely counter shell fire fight. The use of automatic valve to ensure that when the fire broke out with factory isolated ventilation system to prevent the spread of fire along the duct.
Process control, through the regulator nitrogen, Acer battery the cylinder in a smooth delivery DEZn to the use of equipment. Pressure sensors can monitor pressure conveying system. Electronic scale to monitor weight cylinders to ensure a continuous supply of DEZn. Equipment using pneumatic valves, to achieve fully automatic operation through PLC.
Purity control system S S316L stainless steel material, and polished by electrolysis. Process valves are valve and connected to VCR. Also taken into account to prevent the decomposition of DEZ n particles caused by congestion. Operation of the site should be equipped with suitable personal protective equipment (PPE) and emergency response equipment and escape routes clearly marked. DEZn operation requires the preparation of and strictly follow the Standard Operating Procedure (SOP), has been done to confirm each step.
DEZn water due to severe reactions occurred, as well as spontaneous combustion in the air, to detect and cut off the source of leakage is to prevent the fire to expand the means of the most fundamental. The solution for the fire station is mainly isolated from contact with air DEZn, are commonly used dry powder fire extinguishing agent, A42-A3 battery vermiculite, sand, perlite, etc., prohibiting the use of Halon fire extinguishers, water, foam fire extinguishing agent.