Spray-dried plasma globulin

Spray-dried plasma protein powder (SDPP) is a protein product obtained from animal blood waste through a series of processing steps. It is widely used because it significantly alleviates weaning stress in piglets. This design was developed in accordance with the client’s requirements, drawing on domestic and international experience as well as our factory’s many years of practical expertise. The design strictly adheres to all specifications provided by the client and guarantees the achievement of all performance metrics. The guiding principles of the design are energy efficiency, reliability, provision of design margins, and cost-effectiveness.

(1) Process Description (See Flowchart)

A slurry with a solid content of 13% is pumped from the feed tank to the high-speed atomizer at the top of the tower via a screw pump. Under the centrifugal force generated by the atomizer, the slurry is broken down and dispersed into a dense cluster of fine droplets.

Changzhou Mingxing Drying’s patented design employs a direct-fired coal-fired hot air heating system and a bottom-inlet hot air distribution technology, which significantly reduces production costs and achieves energy-efficient, high-performance operation. Completely distinct from similar equipment in the industry, it boasts the lowest energy consumption in the blood meal industry! It can increase product profits by 15%!

The hot air for drying is fed directly into the tower through a hot air duct located at the base of the tower. An angled, fan-shaped top-inlet hot air distributor is installed at the outlet end of the duct. The hot air comes into direct contact with the mist droplets at a specific flow velocity, rapidly drying the slurry into powder. This system utilizes an MRW1t high-speed centrifugal atomizer with a 7.5 kW variable-frequency drive that enables stepless speed adjustment.

The exhaust gas from the dried powder first enters a high-efficiency cyclone dust collector. The dust filtered by the dust collector is drawn by an induced draft fan into a scrubbing tower, where the dust-laden gas undergoes further scrubbing before being discharged into the atmosphere.

All components in contact with the material are made of food-grade 304 stainless steel, ensuring the purity of the product and preventing contamination.

This solution employs PLC-based touchscreen operation with manual/automatic control modes, offering a high degree of automation.

(II) Design Features:

1. Plasma protein powder produced using high-speed centrifugal spray drying does not require rigorous filtration equipment. It offers high processing capacity and excellent instant solubility of the dried powder, making it suitable for highly viscous concentrates.

2. This design utilizes a clean heat source—purified high-temperature flue gas from an energy-efficient and environmentally friendly direct-fired coal-fired hot air furnace—as the drying medium.

3. This solution features a high degree of automation and excellent safety performance. The design utilizes touchscreen-based computer programming with PLC control, ensuring safety and reliability. Operating parameters are displayed on the screen, with adjustable control settings, audible and visual alarms, and an automatic safety shutdown function.

4. The atomizer has a spray capacity of 500 kg, with the atomizing disc rotating at 15,000 rpm; when operated properly, the material is unlikely to stick to the walls.

5. The hot air distributor, manufactured using Niru technology, operates ideally in conjunction with the drying tower.

6. The designs of the hot air furnace, drying tower, and gas-solid separation system all include a 15% margin of safety to ensure product output and quality requirements are met.