Closed cycle organic solvent spray dryer equipment

1.1 Explosion proof system:

First layer nitrogen explosion-proof: According to the inert gas properties of nitrogen, the entire pipeline adopts nitrogen circulation, and the system can only operate normally when the oxygen content is below 3%.

The second layer of industrial control is explosion-proof, with a pressure higher than 3000pa. The safety valve is open and can release pressure. For detailed industrial control procedures, please consult the factory technical engineer.

The third layer of explosion-proof plate is explosion-proof. When the pressure inside the drying tower system rises abnormally, the explosion-proof plate at the top of the tower automatically opens to release the explosion

The fourth layer of the whole machine is explosion-proof, with an internal ventilation system (optional), suitable for harmful gases

Closed cycle organic solvent spray dryer equipment

1.2 Product Features:

Can prevent oxidation, avoid danger, and improve quality;

Easy to achieve aseptic and dust-free processes.

Can recover solvents from the liquid material.

Improve the preservation of aromatic components.

Capable of drying or cooling flammable liquids into pellets.

Can dry materials with very high heat sensitivity.

Can achieve low pollution and pollution-free.

Can save odor removal devices.

Capable of low-temperature drying below 100 ℃.

1.3 Applicable products:

Non oxidizing ceramics, superhard alloys, and high-efficiency battery materials.Seasoning and healthy food.Pharmaceuticals, vitamins, and organic medicines.Synthetic resins, waxes, etc.

2 Overall structure (subject to Qiao Feng's final design)

The equipment is mainly composed of feeding system, heating system, atomization system, spray drying system, inert gas circulation system, product recovery system and condensation system.

2.1 Feeding System

Including: ingredient tank, solvent tank, feeding peristaltic pump, feeding pipeline, atomizer. Firstly, the prepared slurry is put into the ingredient tank, stirred evenly, and then driven by the peristaltic pump, the slurry reaches the atomizer through the pipeline valve. The atomizer needs to be equipped with a specially designed explosion-proof atomizer nozzle from Shanghai Qiaofeng, and the nozzle has a one-year warranty for use.

Closed cycle organic solvent spray dryer equipment

2Heating system

The heating system consists of a nitrogen electric heating system. The enclosed heating element directly heats the dry medium (nitrogen) in the pipeline and controls the temperature accuracy within ± 2 ℃ through a set of pressure regulating control devices

2.3drying tower

The drying tower includes: tower body, explosion-proof lighting, gas distributor, temperature control equipment, pressure relief device, air inlet pipeline, air outlet pipeline, oxygen content measurement sensor and other components. A filtering device needs to be installed inside the air inlet pipeline; Under the heating effect of hot air, the atomized slurry evaporates and dries into powder, which falls to the bottom of the discharge outlet. The gas is discharged from the exhaust pipe for closed-loop circulation,

2.4 Product Recycling System

The gas discharged from the bottom of the drying tower contains powder and organic solvent vapor, which are recovered by a filtering device to separate the powder and organic solvent gas. The powder is recovered, and the organic gas enters the condenser for recovery and reuse.

2.5 Gas circulation system

The gas circulation is completed by a set of circulating fans. The drying medium is output from the circulating fans, flows through the condensing device, electric heater, drying tower, cyclone separator or bag filter, temperature resistant and high-efficiency filter, and then returns to the circulating fans for reuse, forming a gas circulation system.

2.6 Condensation system

The condensation system consists of a refrigeration unit, a condenser, a refrigerant circulation pump, a filter, a heat exchanger, and connecting pipelines. The "wet" gas (including evaporated organic solvent vapor) discharged from the dust collector enters the condenser, and the gas is cooled by the condenser to remove liquid before returning to the gas circulation system. The organic solvent vapor is recovered by condensation and automatically discharged into the solvent tank through the liquid level controller at the bottom of the condenser.

2.7 Atomization system

This system adopts mechanical structure with hard contact, no sealing gasket, and no leakage. Unlike ordinary electric centrifugal nozzles, overheated corrosive steam comes into long-term contact with the wires of the electric nozzle, corroding the wires and causing the plastic coating on the surface of the wires to corrode, soften, and peel off, resulting in a short circuit.

3. Advantages of this device:

3.1 Adopting Qiao Feng's innovative (QFN-BLG-ES-VER2018-1A) atomization system, this system adopts mechanical structure with hard contact, no sealing gasket, and no leakage. Unlike ordinary electric centrifugal nozzles, overheated corrosive steam, under positive pressure, comes into long-term contact with the wires of the electric nozzle, corroding the wires and causing the plastic coating on the surface of the wires to corrode, soften, and peel off, resulting in a short circuit.
3.2 Can achieve ultrafine powder in the range of 1-8 microns, suitable for the preparation of battery materials

4. Equipment parameters

note1: The evaporation rate of NMP is based on an inlet air temperature of 280 ℃

2: If you need equipment with higher evaporation capacity, please inquire online or call our company