Low-Temperature Steam Crystallizer
For the concentration and drying requirements of ultra-high concentration mother liquor in industrial fields, this system combines low-temperature evaporation technology with a self-adaptive scraper structure. Under vacuum negative pressure conditions (around -95 kPa), a spiral stirring scraper system is used to specifically treat high-salinity, high boiling point elevation, and high-viscosity materials, achieving solid-liquid separation and crystallization drying.
An innovative heat exchange structure and intelligent dynamic interlock control enable material crystallization while minimizing energy consumption, helping enterprises reduce energy use.
Application Fields
1. Treatment of high-concentration, heat-sensitive active substances, such as enzymes, antibiotics, vitamins, and probiotics (high temperatures may cause protein denaturation or antibiotic deactivation)
2. High-viscosity / easily crystallizing mother liquor, such as polysaccharides and organic acids (high temperatures may increase viscosity or cause coking and blockage)
3. Environmental protection and resource recovery
(1) High-salinity chemical wastewater
(2) MVR / triple-effect evaporation mother liquor
(3) RO concentrate
(4) Zero liquid discharge mixed salt mother liquor
Core Advantages
Low-temperature (35–50°C) evaporation to avoid thermal damage and protect biological activity
High-efficiency vacuum system, continuous water discharge, low maintenance cost, and low noise
High-efficiency steam spiral separation system with built-in steam purification and reflux structure, capable of removing over 95% of free-state organics and free water; zero heavy metals in effluent; COD reduced by 70% compared to traditional low-temperature evaporators, resulting in better effluent quality
No buffer tank required; direct feed for crystallization treatment
New spiral discharge system enables deep crystallization and discharge of dry solid materials
产品型号 Model
| 处理量 Capacity | 装机功率 Installed Power | 运行能耗（吨水） Operating Energy Consumption (per ton of water) | 外形尺寸 Dimensions | |
AJZQ-50 | 50L/h | 3KW | 0.9T/T(蒸汽steam） | 50KW·h/T（电electric） | 2500*1300*2700 |
AJZQ-260 | 260L/h | 5KW | 0.8T/T(蒸汽steam） | 25KW·h/T（电electric） | 4300*1400*3400 |
AJZQ-500 | 500L/h | 7KW | 0.7T/T(蒸汽steam） | 14KW·h/T（电electric） | 4300*1600*3600 |
AJSZQ-800 | 800L/h | 15KW | 0.7T/T(蒸汽steam） | 14KW·h/T（电electric） | 4500*2700*3600 |
Note: Processing capacity and power consumption are referenced to tap water evaporation conditions; actual values shall be calculated based on influent water quality.
一、Core Principle
High vacuum (-90 to -98 kPa) lowers the boiling point of water to 37–45°C → low-temperature heating evaporation → concentration to supersaturation and crystallization → scraper prevents scaling → vapor condensation and reuse → solid-liquid separation and discharge.
二、Complete Working Process
1. Vacuum feeding + low temperature
A vacuum pump creates -90 to -98 kPa, and wastewater is drawn into the evaporator by negative pressure; the boiling point is reduced to 37–45°C.
2. Low-temperature heating evaporation
Steam jacket heating causes the solution to boil at 37–45°C, generating secondary vapor; the vapor is purified by a spiral separator and condensed into distilled water(Reusable).
3. Concentration → supersaturation → crystallization
Continuous evaporation increases concentration beyond solubility, leading to crystallization; the material transitions from liquid → slurry → solid.
4. Forced scraping to prevent scaling
Built-in forward and reverse spiral scrapers with adaptive blades continuously clean the wall, preventing fouling and ensuring heat transfer efficiency.
5. Automatic discharge + circulation
When crystals/dry residue reach the set moisture content (usually <20%), automatic discharge occurs; the mother liquor is recycled until volume reduction targets are met.
