Lithium carbide drying equipment
Brief description of lithium carbide material: colorless or white brittle crystal. It is ionic carbide. It has strong reducibility and can be burned in fluorine and chlorine when cold, and ignited in the atmosphere of oxygen, sulfur and selenium in strong heat. It can be oxidized by potassium chlorate or potassium nitrate at melting point. It reacts slowly with concentrated acid. Exothermic decomposition reaction occurs when it is co melted with potassium hydroxide. It reacts with water to produce acetylene and lithium hydroxideBrief introduction of lithium carbide materials:
Colorless or white brittle crystals. It is ionic carbide. It has strong reducibility and can be burned in fluorine and chlorine when cold, and ignited in the atmosphere of oxygen, sulfur and selenium in strong heat. It can be oxidized by potassium chlorate or potassium nitrate at melting point. It reacts slowly with concentrated acid. Exothermic decomposition reaction occurs when it is co melted with potassium hydroxide. It reacts with water to produce acetylene and lithium hydroxide.
The synthesis method of lithium carbide is as follows
The metal lithium was cut into small pieces and mixed with the mass ratio of lithium to carbon black of 7 ∶ 12. The mixture is put into a steel combustion boat, and the combustion boat is placed in a steel combustion tube. The combustion tube is placed in a porcelain tube which can be vacuumed. Under the condition of decompression (vacuumizing), heating to 600-700 ℃ and holding for 30min, lithium carbide can be prepared.
Lithium carbide drying equipment product introduction:
Its unique structure and working principle determine that it has the characteristics of high thermal efficiency, low energy consumption, small floor area, simple configuration, convenient operation and control, and good operating environment. It is widely used in the drying operation of chemical, pharmaceutical, pesticide, food, feed, agricultural and sideline products processing industries. It is well received in the practice of various industries. At present, we produce three types of atmospheric pressure, airtight and vacuum, 1200, 1500, 2200, 3000, four kinds, a (carbon steel), B (contact material parts are evenly distributed stainless steel), C (based on B, the steam pipeline, main shaft and support are stainless steel, and the cylinder and cover are lined with stainless steel). Three kinds of materials, drying area of 4 ~ 180m2, a total of hundreds of types of series products, and can provide matching auxiliary equipment, can meet the needs of users for drying various materials.
Working principle of lithium carbide drying equipment:
the wet material is continuously added to the first drying plate on the upper part of the dryer from the feeder, and the rake arm with rake blade makes rotary motion, which makes the rake arm rotate continuously. The material flows through the surface of the drying pan along the exponential helix, and the material on the small drying plate is transferred to the outer edge, and falls to the outer edge of the lower large drying plate at the outer edge. On the large dry plate, the material moves inward and falls into the following layer of small drying plate from the middle blanking port. Large and small drying plates are arranged alternately from top to bottom, so that materials can flow through the whole dryer continuously. The hollow drying plate is filled with heating medium in the form of saturated steam, hot water and heat conducting oil. The heating medium enters from one end of the drying plate and leads out from the other end. The dried material falls to the bottom layer of the shell from the last layer drying plate, and then is transported to the discharge port by the rake blade. The moisture escapes from the material and is discharged by the dehumidification port on the top cover, and the moisture in the vacuum disc dryer is discharged from the vacuum pump port on the top cover. The dry materials discharged from the bottom layer can be packaged directly. By adding fin heater, solvent recovery condenser, bag filter, dry material back mixing mechanism, induced draft fan and other auxiliary equipment, the drying production capacity can be improved. The drying paste and heat sensitive materials can be recovered conveniently, and the pyrolysis and reaction operation can be carried out.
Lithium carbide drying equipment performance characteristics:
（1） It is easy to control and has strong applicability
The drying process is optimized by adjusting the thickness of material layer, spindle speed, number of rake arms, type and size of rake blade.
Each drying tray can heat or cool the material by hot or cold medium separately, and the material temperature can be controlled accurately and easily.
The residence time of materials can be adjusted.
The flow direction of materials is single, no backmixing phenomenon, uniform drying, stable quality and no need of re mixing.
（2） The operation is simple and easy
The start-up and stop operation of dryer is very simple.
After stopping feeding, the scraper blade can quickly empty the material in the dryer.
Through the special large inspection door mirror, the equipment can be cleaned and observed very carefully.
（3） Low energy consumption
The material layer is very thin, the spindle speed is low, and the power consumption of the material conveying system is small.
High thermal efficiency and low energy consumption.
（4） The operating environment is good, solvent can be recovered, dust emission meets the requirements
Atmospheric pressure type: due to the low air velocity in the equipment and the low humidity distribution in the equipment, the dust is difficult to float to the top of the equipment, so the tail gas discharged from the top wet outlet almost does not contain dust.
Closed type: equipped with solvent recovery device, it can easily recover the organic solvent in the carrier wet gas. The solvent recovery device is simple and the recovery rate is high. For flammable, explosive, toxic and easy to oxidize materials, nitrogen can be used as wet carrier gas for closed-circuit circulation, so that it can be operated safely. It is especially suitable for drying flammable, explosive and toxic materials.
Vacuum type: disc dryer operated in vacuum, especially suitable for drying heat sensitive materials.
（5） Easy installation, small floor space
The dryer is delivered as a whole and transported as a whole. It only needs to be hoisted in place, so the installation and positioning are very easy.
Due to the arrangement of drying tray and vertical installation, the drying area is large and the floor area is small