Can the temperature control accuracy of reaction kettle materials be ±0.5℃?
Reaction kettle need precise temperature control in the field of scientific research institutions and medical chemical industry, the general reaction kettle, or mixed drier, complex situations of temperature control technology, the problem of the high accuracy requirement, we choose intelligent PLC to control the mold temperature machine, common or material in reaction kettle temperature control, on the market for material in reaction kettle temperature control temperature control equipment commonly used is the oil type mold temperature machine, How can the oil temperature machine control the temperature of the material in ±0.5 degrees? Next xiaobian will introduce it in detail.
First of all, it is necessary to select the correct type. The following points should be paid attention to during the selection:
1. Whether the jacket of the reaction kettle can withstand pressure, the normal pressure of the heat conduction oil furnace is about 4 kg.
2, the material is endothermic or exothermic reaction, the specific process requirements, such as temperature to 60 degrees of insulation for 20 minutes, and then continue to rise to 160 degrees of insulation for 10 minutes, and then cool to how many degrees, how long to achieve, these are important parameters affecting the direct selection.
3, whether need PLC intelligent control, support a variety of formula process requirements.
4. Whether the material is class A chemical, whether the heat conduction oil furnace should be explosion-proof, these are the instructions for the preliminary selection.
Stainless steel jacket electric heating mixing tank (the image is only a reference) | |
1 | 1: Volume: 619L 2: Heating method: jacket electric heating 3: Thermal insulation: with thermal insulation layer 4: Tank layers: 3 layers |
2 | 5: Material: SUS304 stainless steel 6: Structure: Top flat cover bottom head 7: Cylinder size: 900*800mm (excluding the size of the upper and lower heads) 8: Cylinder thickness: 3mm SUS304 |
3 | 9: Jacket thickness: 3mm SUS304 10: Thickness of insulation layer: 30CM 11: Thickness of insulation skin: 1.5mm SUS304 12: Heating power: 20KW, there are 2 thermo couples, the heating temperature can be adjusted |
4 | 13: Electric control box: stainless steel electric control box 14: Stirring device: 2 sets 15: Upper stirring power: 3kw, with a cycloidal pinwheel reducer, the speed is 0~33rpm(with frequency conversion speed regulation) 16：Motor brand: Jiajie Transmission/Wenzhou |
5 | 17：Stirring paddle: anchor type, scraping wall stirring 18: Lower emulsification power: 7.5kw, conveying speed 0~2900rpm (with frequency conversion speed regulation) 19：Motor brand: Dedong Motor/Shanghai 20：Inverter brand: ENC / Shenzhen |
6 | 21：Working voltage: 3-phase 220v60hz 22: Process: fine polishing inside and outside, smooth inner surface 23:The size of the discharge port is DN50, and the height of the discharge port from the ground is 300mm. 24: With 201 stainless steel operating platform. |
Note: The above information is for reference only, and the parameters confirmed after actual communication shall prevail. | |
The reactor can be used in petroleum, chemical, rubber, pesticides, dyes, medicine, food, and pressure vessels used to complete the process of vulcanization, nitrification, hydrogenation, alkylation, polymerization, condensation, etc., such as reactors, reaction pots, decomposition pots , Polymerizer, etc.; materials generally include carbon steel, stainless steel and other materials.
How to control the material in ±0.5 degree? Normal oil temperature control is the temperature of heat conduction oil, heat conduction oil temperature can be controlled ±1℃, how to control the temperature of the material? There is need to be adopted to control material cascade control system, customer material in reaction kettle as main control objects, auxiliary control of thermal oil temperature, so as to realize dual closed loop control, precise control material temperature effect, compared with the simple single loop control systems, cascade control system formed two closed-loop on its structure, a closed loop in the inside, is known as the inner loop or vice; The other loop is outside and is called the outer loop or main loop. The secondary loop (that is, the temperature of heat conduction oil) is responsible for coarse adjustment in the control process, and the main loop (customer mold temperature) is to complete fine adjustment. Cascade control is to complete the control effect that is difficult to achieve by the control system of ordinary single loop through the coordination of these two loops. In the system, we set the main control as the material temperature, and the secondary control as the temperature of heat conduction oil at the outlet of our machine.
In the reaction kettle, the upper, middle and lower sensors can be used to detect the temperature of the material, and the average value shall be used as the criterion. The control precision is high, mainly composed of precision temperature control instrument and pipeline design system, and more importantly, the on-site debugging experience. If you want to know more details of the case, please consult huazhiyi machinery equipment manufacturers, we have professional sales managers to answer one to one.
Shenyang Precision Work Huazhiyi Machinery Co.,LtdSales Manager: Linna Mu E-mail: Amanda@huazhiyijx.com Tel:+0086 024 67768608 / 67768609 Mob:+0086 18842507772 Whatsapp: +0086 18842507772Wechat: +0086 18842507772Address: Door 3, No. 77-37, 13th Road, Shenyang Economic And Technological Development Zone, Shenyang City, Liaoning Province, China