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во взвешенное состо ние за счет потока холодного теплоносител , поступающего под газораспределительную решетку 4, и перемешаетс в направлении размещени устройства дл разгрузки 3. При перемещении материал пересекает щели 6 подачи гор чего теплоносител , образующие участки нагрева.suspended due to the flow of cold coolant flowing under the gas distribution grid 4, and mixed in the direction of placement of the device for unloading 3. As it moves, the material crosses the hot coolant supply slots 6 forming the heating sections.
Вследствие того, что скорость подачи гор чего теплоносител значительно превышает (в 7,5-30 раз) скорость подачи холодного теплоносител , на участках нагрева частицы материала фонтанируют и попадают на соседние участки охлаждени , где происход т выравнивание влажности по сечению частиц и подготовка их к последующему нагреву.Due to the fact that the flow rate of hot coolant is much higher (7.5-30 times) the feed rate of cold coolant, in the heating areas, particles of the material flow and enter neighboring areas of cooling, where the moisture leveling over the cross section of the particles takes place and prepared for subsequent heating.
Claims (2)
1.Способ сущки сыпучих материалов во взвещенном состо нии с разделением зоны сущки на чередующиес участки нагрева и охлаждени , в которые подают соответственно гор чий и холодный теплоносители, о тличающийс тем, что, с целью интенсификации процесса и исключени перегрева материала, сущку на участках нагрева ведут в режиме фонтанировани , а на участках охлаждени - в режиме псевдоожижени .1. The process of dry bulk materials in the caged state with separation of the zone of the substance into alternating heating and cooling areas, to which hot and cold heat transfer media are supplied, respectively, in order to intensify the process and prevent overheating of the material, the substance in the heating areas in the cooling mode, in the fluidization mode.2.Способ по п. 1, отличающийс тем, что гор чий теплоноситель подают со скоростью , превышающей скорость начала фонтапировапи не менее чем в 1,5 раза.2. A method according to claim 1, characterized in that the hot coolant is supplied at a rate that is at least 1.5 times faster than the start of the flow of the firotapirapi.
SU1908546A1973-04-231973-04-23
The method of drying bulk materials
SU531968A1
(en)
DEVICE FOR CONTINUOUS VOLKANIZATION OF LONG-DIMENSIONAL PRODUCTS IN A PSE-DRIVED LAYER 1 The invention relates to the vulcanization (polymerization) field of long products in a fluidized bed and can be used for heat treatment of rubberized fabric and other polymeric materials. 5A well-known device for continuous vulcanization of long products in a fluidized bed, containing a vertical chamber filled with granular coolant immersed in the last heaters and an air duct for supplying a fluidizing agent associated with the inlet section of the chamber. However, in such a device, the fluidizing fluidity is not evenly distributed Layer height of the camera. It has only a narrow area of stable fluidization regime, therefore, the quality of heat treatment of products is insufficient. In order to expand the stable regime of fluidization in the proposed device 20, the inlet section of the chamber is made with a U-shaped longitudinal section, edged towards the top of the product, and connected with air duct by means of a slit neck and a diffuser. On the longitudinal walls 25 of the chamber, vortex converters are mounted, made in the form of inclined plates arranged in rows along the movement of the product with alternating direction of inclination. FIG. 1 shows the described device, a longitudinal section; pas figs. 2 is a view of the arrow A in FIG. 1 ^^ llzdelie conventionally not shown). The device contains a vertical chamber 1 filled with granular inert coolant 2, horizontal tubular electric heaters 3, an air duct 4 for supplying a fluidizing agent and a separation chamber 5. The outlet section of chamber 1 is made with a U-shaped longitudinal section facing the top towards the supply of the product being processed, and by means of a narrow 11 slit neck 6 and diffuser 7 is connected to the duct 4. On the longitudinal walls of the chamber 1 are mounted eddy 8, made in the form of inclined plates (see Fig. 2), arranged in rows along the movement of the product with alternating directions of inclination, for example, in a checkerboard pattern. The device is operated as follows. The workpiece 9, for example cut fabric, is continuously fed through the center of the chamber 1 at the bottom and retracted from the top. A fluidizing agent, such as heated gas, is supplied to the chamber through an air duct, the speed of which in slit neck 6 is sufficient to prevent granular heat carrier 2 from spilling out from chamber 1. Heat carrier 2 is intensively mixed and transfers heat from the ventilating gas and fabric heaters.