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Analysis of trichlorosilane production equipment

Traffic, easy to clean air cooler, replace the bag filter bag. 2.2 distillation process using pressure distillation, synthetic materials with a shield pumps transported to the distillation column to the middle. Reboiler and the column set +0. O0m, top condenser set at +18. O0m above, the layout is reasonable. 2.3 Synthesis of exhaust gas treatment processes and distillation tail gas exhaust sub, set up four gas absorber. Treatment before the two towers synthesis gas, for containing silica particles and prevent clogging the absorption tower, with a separate washing Sheung Shui; the other two towers distillation tail gas treatment, mainly with a small amount of trichlorosilane and silicon tetrachloride,goedkope uggs, the majority is a hydrogen and hydrogen chloride gas,pumas shoes, waste water in the pool with the acid wash cycle can be. This set is a primitive gas treatment, and waste, \Now widely used PSA tail gas unit, not only the large number of products recycled exhaust gas, but also can absorb exhaust hydrogen and hydrogen chloride gas, and desorption out of re-use, not only recycled products, but also reduced the \3 Structural analysis of the main production equipment boiling furnace diameter 800mm, length of reaction section, the reaction was completely in favor; expanding segment diameter 1300mm,timberland boots, to make synthesis gas in the silicon dust entrainment better separated. Heat exchanger tube is 45 �� 5 / 19 �� 2 casing material used 2O boiler steel, high temperature shock. Uniform distribution of multiple tube heat exchanger inside the furnace body can better respond to the furnace heat generated in a timely and uniform taken away, the reaction temperature is relatively stable, synthetic materials conducive to maintaining more than 85% conversion rate. Flower plate material is 16Mn forgings,ugg boots Günstig, high temperature corrosion resistant material with hood. Hood spent a lot of board evenly distributed, hydrogen chloride gas from passing through the hood, even with the silica layer contact and boiling reaction. Air cooler is also very critical of the equipment, the structure 42 directly affect the stability of production. Good air cooler you can make the most of the synthesis gas gathered high boiling, will not bring depth to the water cooler and cooler. Air cooler with a few tube diameter l3.32em parallel, the effect is not very good (only set an air-cooled device, no spare), water coolers frequently clogged. I believe that the air cooler needs to change. Diameter should be moderate, if too large, wall scaling, there is no cooling effect; if the diameter is too small, scaling easily blocked, causing pressure on the high roof. The analysis determined by the tube diameter 9.99em 13.32em diameter pipe replacement, parallel 2 rows (10), each length 1.5m. Bag filter outlet diameter 19.98em. This synthesis gas flow rate reduced to the original 1 / 3 can be gathered and a large number of high boiling cooling. The structure of water coolers heat exchanger should be selected large area of heat exchanger tube. If the cooling effect, water coolers set only 1 set, regular cleaning can be. Cryogenic Heat Transfer of area selection should be based on plant capacity, if too large, not the economy. Material requirements for high cryogenic devices, high cost, and the possession of large amount of refrigerant to increase the freezer load. In the production, and deep cold water coolers require tubes and tube plate strength of inflation plus the connection sealed by welding, trichlorosilane production equipment requirements of medium to very high, trichlorosilane easily soluble in water, and hydrochloric acid and hydrolyzed silica, silica plug the pipeline, hydrochloric acid corrosion of equipment. Therefore, the production equipment was very strict. 4 Problems and Improvement (1) reduce the water content of hydrogen chloride reduced the corrosion of equipment. Analysis, boiling furnace tube and the Hood hydrogen chloride corrosion is mainly caused by high water content. Through a number of process improvement, such as increasing the hydrogen chloride drying tower, hydrogen chloride mist eliminator, so that the volume fraction of water into the furnace of hydrogen chloride of 0.1% or less, reducing disassembly times, extending the life of the roaster to ensure continuous production sex. (2) increasing the heat transfer area of the water coolers. The original water cooler too small, there is no material to be cooled down. Redesigned to increase the 2 sets of 60m large tube heat exchanger, not only out of the roaster in the synthesis gas to play the role of pre-cooling, but also reduces the load on cryogenic device, so that the material contained in greatly reduced exhaust gas to reduce exhaust gas absorber load, reducing the \(3) air cooler replaces the original high boiling remover. Removal of high boiling devices in use for some time, the internal accumulation of a large number of high boiling, convenient cleaning, resulting in potential safety problems, but after the house filled with high boiling basically no cooling effect, also increased the line pressure. After discussion, the decision to remove high boiling replaced by a simple air-cooled device, not only is a good addition to the high-boiling, but also to facilitate regular cleaning, reducing the frequency of cleaning water coolers. [Editor: Dong red berries]
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