Drying method and system for paste polyvinyl chloride recycled material
The technology of polyvinyl chloride and drying method is applied in the field of drying method and system of polyvinyl chloride recycled material for paste, and can solve the problems of heat-sensitive material heating temperature not exceeding 80°C, high moisture content of material, large energy consumption and the like, Achieve the effect of solving environmental protection problems of sewage discharge and reducing production costs
Inactive Publication Date: 2016-02-24
SHENYANG CHEM IND CO LTD
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Problems solved by technology
2. Since the heating temperature for heat-sensitive materials cannot exceed 80°C
3. The moisture content of the material is higher than 25-35%
5. High energy consumption
Method used
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Embodiment Construction
[0025] see figure 1 , a method for drying polyvinyl chloride recycled materials for paste provided by the embodiment of the present invention, the method is based on figure 2 In the shown system, the method specifically includes:
[0026] Step 10, feeding material to the spin flash dryer 4 through the feeder 3 .
[0027] Step 20: Cooperate to introduce air through blower 1 and induced draft fan 7, and send the air into spin flash dryer 4 after being heated by steam heat exchanger I2; Negative pressure state;
[0028] Step 30, forming a high-speed rising airflow through the spin flash dryer 4, the air flow disperses the wet material in the spin flash dryer 4, and pulverizes the material therein through the stirring device installed in the spin flash dryer 4, Then it is sent to double spiral dryer I5 for drying. That is: the hot gas rising at a high speed contacts the wet material entering the spin flash dryer 4, and the material is quickly dispersed. The high-speed rising...
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The invention discloses a drying method and system for a paste polyvinyl chloride recycled material. The drying method comprises the following steps: feeding to a rotating and flash streaming drier through a charging machine; sending air through the collaboration of an air blower and an induced draft fan 7 into the rotating and flash streaming drier after being heated through a vapor heat exchanger I; forming a micro-negative pressure state by adjusting air volumes of the air blower, the induced draft fan 7 and an induced draft fan 11; forming a high speed rising airflow through the rotating and flash streaming drier, dispersing wet materials of the rotating and flash streaming drier by the airflow, crushing the materials through a stirring device arranged in the rotating and flash streaming drier, and then sending to a double helix dryer I for drying; sending the materials dried in the double helix dryer I into a bag type dust catcher I for treating and then sending to a double helix dryer II for drying; and then sending the materials dried by the double helix dryer II into a bag type dust catcher II. The drying method provided by the invention can solve problems in drying micron-sized fineness heat-sensitive high polymer materials, the water contents of the dried materials are low, and the drying efficiency is high.
Description
technical field [0001] The invention relates to the technical field of chemical industry, in particular to a drying method and system for recycled polyvinyl chloride materials for paste. Background technique [0002] Recycled polyvinyl chloride materials for paste are the sewage materials and slag materials produced during the polymerization process. If this part of materials is lost with the sewage, it will not only pollute the water body, but also increase the production cost of the product, so it must be recycled and reused. [0003] Recycling polyvinyl chloride recycled materials for paste must be dried, and the main difficulties in drying are: 1. The particle size distribution range of recycled polyvinyl chloride materials for paste is wide (1 μm ~ 5mm). 2. The heating temperature cannot exceed 80°C for heat-sensitive materials. 3. The moisture content of the material is higher than 25-35%. 4. The final moisture content of the material is required to be below 1.0%. 5...
Claims
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IPC IPC(8): F26B3/06F26B21/00F26B25/00F26B25/04
CPCF26B3/06F26B21/005F26B25/00F26B25/007F26B25/04F26B2200/08
Inventor 赵颖佟永刚王崇雷
Owner SHENYANG CHEM IND CO LTD