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Pressure spray drying tower (vertical)
2019-08-14 Views:: Author: admin Date 74

  1. principle

    7000~20000kpa 之压力,从带有 Φ0.5~1.2mm 喷孔的喷嘴中喷出雾化,与热空气接触被瞬时干燥。 The feed liquid (concentrated milk) is sprayed by a reciprocating high-pressure pump at a pressure of 7000 ~ 20000kpa from a nozzle with a Φ0.5 ~ 1.2mm nozzle, and is dried instantly when it comes into contact with hot air.

  2. Equipment composition

    This equipment consists of air filter, inlet fan, air heater, atomizer, drying room, fine powder collection device, exhaust fan and powder collection cooling device.

  3. Use of each component:

  4. Air filter: This filter is used to filter out dust, soot, flying insects and other impurities in the air. It consists of single or multiple filter units according to a defined area. The material of the filter layer is made of stainless steel velvet. ( 要求无味、无臭、无毒、挥发性低、化学稳定性高 ) 以增加除尘效果。 Spray with light oil ( requires odorless, odorless, non-toxic, low volatility and high chemical stability ) to increase the dust removal effect.

  5. 140~160°C 进入喷雾干燥室,加热方法一般采用间接加热,用蒸汽为热源。 Air heater: After the fresh air is filtered, it needs to be heated to 140 ~ 160 ° C to enter the spray drying chamber. The heating method generally uses indirect heating, and steam is used as the heat source. The heater is composed of a plurality of heat-dissipating tubes, and the materials are copper tubes or steel pipes and purple steel heat transfer assistants.

  6. M” 或“ 8 ”型压力喷嘴。 Sprayer: Use " M" or " 8 " type pressure nozzle. The material liquid is sent into the nozzle by a high-pressure pump to cause the liquid flow to rotate and guide the channel to be ejected to contact the high-temperature air, that is, it will become a particulate powder after instant drying, and the material is made of stainless steel.

  7. Drying chamber: The spray drying chamber is a place where hot air exchanges heat and mass with the material to be dried. It requires a certain space to provide enough air and time for the material to stay in the drying chamber to ensure that the moisture content of the product reaches the production process. Requirements without causing excessive heat or sticky walls. icr18Ni9Ti 不锈钢板制成。 The main material is made of icr18Ni9Ti stainless steel plate.

  8. Powder collecting device: The powder particles obtained by spraying can be taken out of the drying chamber by two types of powder collecting methods. One is that all the powder particles and exhaust gas enter the separation device, and then are taken out from the bottom of the separator, and the other most of the powder particles are left to dry. The powder is taken out by the powder discharge device in the room, and the fine powder is separated into the separation device with the exhaust gas. These fine powder particles can be managed to return to the drying room to form large particles again. The main material is stainless steel.

  9. Particle collection device: A certain amount of product particles are entrained in the air stream exhausted from the drying chamber. In order to reduce losses and prevent environmental pollution, it must be collected and recovered. There are usually two types of purification devices, dry method and wet method. Dry method uses cyclone separation. Device and bag filter device, the wet method uses liquid to spray and wash the air stream, which can achieve higher income, but it must be used without affecting the quality of the product.

  10. Ventilator: Spraying and drying equipment is generally equipped with two centrifugal fans. One is used for air supply and the other is used for exhaust air. 0.098~0.196kpa 负压下,其功率大小根据干燥设备水分蒸发量大小而确定其风量,风压。 In order to control the air flow and wind pressure in the system (a small device can be used), the drying room is required to be under a negative pressure of 0.098 ~ 0.196kpa during operation, and its power is determined by the amount of water evaporation of the drying equipment to determine its air volume and air pressure.

    The two principles of pressure spray horizontal type and centrifugal spray vertical type are basically the same as pressure spray vertical type, and some of them have different structures.

    20 多年,可针对企业的不同需要定制符合客户要求的生产设备,详询请致电: 18092609686 (同微信)或扫描下方二维码 Xi'an Yongxing Food & Chemical Machinery has been developing and producing enzyme equipment, beverage equipment, dairy equipment, fruit wine equipment, vinegar equipment and other industries for more than 20 years. We can customize production equipment that meets customer requirements for different needs of enterprises. For more information, please call: 18092609686 (same as WeChat) or scan the QR code below

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