The magnitude of the resistance is considered to be the pressure loss ΔH (mm water column) from the magnitude of the ventilation resistance. According to the data given in the book "Chemical Principles", the pressure loss of the cyclone separator is H = 126mln water column; the bag filter type △H is a 1202n water column of l; the wet spray dust collector △H is 25-55mi , 1 water column. Based on past experience and lessons, the resistance assembly caused by wind pipe accumulation and blockage, resistance) should be considered as a key factor. Through the above analysis and comparison, it is not difficult to see that the spray type dust collector has the advantages of being able to absorb dissolved powder, convenient operation, and minimal pressure loss, so it is selected as a design object. Equipment design description The process parameters (calculation basis) drying system ventilation system has 4 identical fluidized beds, the blower is 4 to 72N. The ventilation volume is 9 during operation (in order to make the fluidized bed in a negative pressure state, the damper of the blower is generally in a half-open state, 9 is an estimated value of xll31). Wind speed of the dust collector inlet and outlet: according to the "Chemical Process Design Manual", the fan outlet wind speed is a 20S, taking 20s. The diameter of the dust collector cylinder is determined. 4 fluidized beds share a dust collector, each fluidized The beds are all equipped with dampers, and the dampers are opened at the same time. If they are not used, the dampers of the fluidized bed ducts are closed. According to 4 sets of simultaneous use (that is, when the maximum ventilation), i count: D cylinder 2 3 to x 0.785 points 3: 360 = Zm. Determination of the diameter of the inlet and outlet of the dust collector D 2 36: 0.785: 20: 36 = 0 .sm. Circulating water supply flow crystal MSG itself has less dust, and after separating a part of the powder through a first-stage rotary separator, the remaining part is very small, so the absolute water consumption is very small, change the water once a day, l-2 lining / day can. It is equipped with a pump with a larger flow rate and a higher pressure so as to have sufficient water volume and fully atomized water mist to fully absorb the dust. This design uses 65A Yangyi 40 pump, Q=25.53:n3/h, H=4onl. Gas-liquid contact mode gas-liquid countercurrent (gas upward, liquid downward). There are 20 nozzles evenly distributed, and the water is circulated by the pump to form a spray, and each spray block overlaps with each other without leaving a blank area. Three layers of 20-30 mesh screens are placed under the nozzle layer to increase the chance of gas-liquid contact (see "Spray Dust Collector Construction and Process Pipe Connections"). The structure of the spray precipitator and the connection of the process piping are as follows: (see l) There is no visible dust flying out of the discharge of the dust collector, and no circulating water escapes. Five layers of wet gauze were placed in the exhaust vent, and after blowing for 16 hours, the aqueous solution of MSG was wetted with water, and the glutamic acid content was measured by SBA-40 glutamate/glucose dual function analyzer. %. After 24 hours of circulating absorption of MSG dust, it was found to contain 2.8% MSG, which was pure MSG. 5x0.028=0. 2t two 42kg. Pure MSG 65 per day, can increase the yield: 0.2:65 two 0.065%. One month to recover MSG: 42 30=126okg. The operation is very convenient, deeply loved by the operator . Due to the simple construction, it is not easy to malfunction. Due to the small resistance, the whole line of air ducts has no accumulation of powder, and the wind path is very smooth. In summary, the following conclusions can be drawn: Using the nature of MSG to be easily soluble in water, it is a reasonable choice to use wet dust removal. This choice is just right, and the strengths and weaknesses are avoided. The advantage of the wet method is that fine dust (<101) can be separated. The disadvantage is that it cannot be used for materials that are not allowed to be wetted, or it is difficult to post-process due to a large amount of water consumption. The design scheme can achieve the purpose of dust removal and the trouble of post-treatment of circulating water used for dust removal. It has achieved convenient operation, recycling of dust, simple equipment for civilized production, low investment, and almost no maintenance. Pvc Liner Panel,Pvc Corrugated Panels,Interlocking Upvc Panels,Industrial Pvc Liner Panels ZHEJIANG DEQING GONAT FENCE CO.,LTD , https://www.gonatpvcfence.com