Jiangsu Shuoyun Petrochemical Equipment Co., Ltd.

Multi-effect Evaporator ◎ Category: Evaporation & Concentration Equipment Series ◎ Application Industries: Fruit juice, glucose, starch, pharmaceutical & chemical, pesticides, bioengineering, chemical wastewater treatment ◎ Equipment Features: Large concentration ratio, wide viscosity range, good heat transfer performance, large processing capacity

◎ Product Introduction

Multi-effect evaporator is a high-efficiency evaporation equipment. Its main body consists of heaters, separators, preheaters, condensers, pumps, control system, operating platform and other components. Auxiliary heating units such as rising-film heaters, self-circulation heaters and forced-circulation heaters can be integrated into the whole process to form a combined multi-effect evaporator. It is available in 2-effect, 3-effect, 4-effect, 5-effect and 6-effect configurations. More effects bring larger evaporation capacity. Normally, single-effect evaporator reaches 3 t/h evaporation capacity, 2-effect: 5 t/h, 3-effect: 50 t/h, 4-effect:150 t/h, 5-effect:200 t/h and 6-effect:300 t/h.
In industrial production, massive water evaporation consumes large quantity of steam. Multi-effect evaporation is adopted to reduce steam consumption. In multi-effect evaporation, the operating pressure and solution boiling point of the subsequent effect are lower than those of the prior effect. Therefore, the secondary steam generated from the prior effect can serve as heating medium for the next effect, meaning the heating chamber of the latter effect acts as the condenser for the secondary steam from the former. Only the first effect consumes live steam, which is the working principle of multi-effect evaporation. The last effect or several rear effects usually run under vacuum. Since secondary steam of each effect is reused as heating steam for the next effect, steam utilization rate is greatly improved and energy consumption is saved.

◎ Technical Parameters

Model	Single-effect	2-effect	3-effect	4-effect	5-effect	6-effect
Water Evaporation Capacity (t/h)	3	5	50	150	200	300
Inlet Concentration (%)	Depends on material properties
Outlet Concentration (%)	Depends on material properties
Steam Pressure (MPa)	0.05-0.1
Steam Consumption (t/h)	1-1.5	0.4-0.6	0.3-0.4	0.25-0.3	0.25	0.22
Evaporation Temperature (℃)	Depends on material properties

◎ Application Scope
The multi-effect evaporator is suitable for materials within 50~200℃ and continuous feeding & discharging production. It features large concentration ratio, wide viscosity range, good heat transfer and large throughput. It is applicable for evaporation of heat-sensitive, high-concentration, high-viscosity and corrosive materials. Widely used in fruit juice, glucose, starch, pharmaceutical & chemical, pesticide, bioengineering, chemical wastewater and waste liquid recovery industries. Especially suitable for non-scaling, volatile or heat-sensitive materials.

◎ On-site Photos