WZ series horizontal spray dryer

Introducing foreign technology and combining it with the large vertical structure in ChinaDrying equipmentCompared with the horizontal drying equipment manufactured by our company, the structure is compact, the footprint is small, and the operation and maintenance are convenient. It has significant advantages in product energy consumption, product quality, automation, and is a replacement product for vertical drying equipment.

area covered:

The horizontal dryer can complete a series of processes such as material atomization, hot air dehydration and drying, powder collection, transportation, exhaust and dust removal, and powder discharge in the same compact box. The equipment has a small footprint, compact structure, and reasonable layout, making it easy to operate and maintain. For example, a 1300KG hour horizontal dryer covers an area (length) of 15 * (width) of 8 * (height) of 10 meters, while a vertical dryer with the same water evaporation capacity, due to the vertical dryer's vertical downward spray design to form dropletsdrying towerThe body height is very high, and when using wind and airflow to transport powder, it is necessary to use a separate cyclone separator and bag filter, which results in a large footprint for the vertical dryer.

Product quality:

The powder discharge of the horizontal dryer is centralized, with only one powder outlet, which solves the problem of aggregate in the pipeline and ensures the consistency of particle size and moisture content of the product powder, ensuring product quality and improving product appearance. Reduce the retention of powder in the pipeline after drying, effectively protecting the active ingredients of the product. However, the vertical dryer has multiple discharge ports for the powder, and only fine powder can reach the bag filter. Therefore, the moisture content and particle size of the product vary with different discharge ports. The pipeline is prone to aggregation, and the product stays for a long time after drying, resulting in differences between the inside and outside of the product and significant loss of active ingredients.

Production operation:

The horizontal dryer has simple production operation, high degree of automation, and low failure rate. The internal cleaning of the equipment is convenient and there are no dead corners. Cleaning, maintenance, and upkeep inside a horizontal drying machine require a high-pressure cleaning machine. Workers can easily work standing up without any safety hazards, while the cleaning inside a vertical drying machine is several tens of meters above the ground and cannot be cleaned completely, leaving blind spots for maintenance. Workers operate from high altitude. The safety and difficulty are obvious.

Can be comprehensively utilized:

The exhaust heat recovery waste heat system of a horizontal dryer can significantly reduce energy consumption, improve the overall heat utilization rate of the dryer, and save 30% of energy consumption compared to a vertical dryer. For vertical dryers, there is no heat recovery system, powder ducts, cyclone separators, bag filters, etc. There are many heat dissipation surfaces. Some devices do not have insulation layers, which greatly increases heat loss. Based on our company's years of practical experience, for a vertical dryer without a heat recovery system and with high heat dissipation, its water evaporation unit heat consumption is about 1300 kcal/kg water. Therefore, for a dryer with a water evaporation capacity of 1000 kg/h, the vertical dryer will consume an additional 43000 kcal/hour of heat consumption (requiring an additional 86 kg of 5000 kcal standard coal or 50 cubic meters of natural gas per hour, with the standard value for gas being 8500 kcal/cubic meter)

horizontalPressure spray drying equipmentCompared with vertical drying equipment, it has significant advantages in energy consumption:

1、 For vertical drying equipment, the tower height of the drying equipment is very high due to the design of vertical downward spray to form fog droplets, and the vertical drying equipment uses wind (air flow) to transport powder, so it is necessary to design and use a split cyclone separator and bag filter, which results in a large floor area of the vertical dryer, which also requires a high height and large area of the vertical drying equipment plant. In addition, there are many powder outlets of the vertical drying equipment, and at the same time, only fine powder can reach the bag filter, so the water content and particle size of the powder discharged from different powder outlets are different!

And horizontallySpray drying equipmentThe atomization, dehydration and drying of materials, low-speed circulation scraper powder conveying, exhaust bag dust removal, powder discharge and other processes are all completed continuously in the same compact drying oven, making the equipment occupy a small area, and the height of the horizontal drying equipment with an evaporation capacity of 1990 kilograms per hour is only 12 meters. In addition, internal cleaning of desiccants is also safe and easy.

2、 Heat loss, because the horizontal spray drying equipment's atomization of materials, dehydration and drying, powder transportation, bag dedusting and other processes are all completed continuously in the same compact drying box, and the entire drying box and even the complete insulation layer (100mm thick) of the exhaust air duct reduce the heat loss on the surface of the equipment to a low level, so that the surface of the drying equipment will not feel hot when touching it when the equipment is working!

3、 Energy consumption is reduced. Horizontal spray drying equipment is equipped with exhaust heat recovery system to reduce energy consumption and improve the comprehensive utilization rate of heat. Based on years of practical experience, for vertical drying equipment without a heat recovery system and with significant heat loss, the unit evaporation consumption of water is about 1300 kcal per kilogram. Therefore, for a drying equipment with a water evaporation capacity of 1000kg/h, the additional heat consumption per hour for vertical drying equipment is about 430000 kcal! This also means that an additional 88 kilograms of 5000 kcal standard coal or 50.6 cubic meters of natural gas (with a calorific value of 8500 kcal/cubic meter) need to be paid per hour.