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Briefly introduce the HDCP heat pump distillation coupled pervaporation membrane device
source：www.sjbyj.com Release time：2026-07-07
1、 Definition of Name
HDCP is the industry abbreviation for heat pump distillation coupled with pervaporation equipment. It is an integrated continuous chemical purification equipment that deeply integrates steam compression heat pump distillation with pervaporation (PV) membrane separation, specifically designed to solve the problem of azeotropic solvent dehydration.
2、 Core working principle
1. Heat pump distillation pre concentration
The raw materials are first sent to the distillation tower, and the steam at the top of the tower is heated and pressurized by the heat pump compressor. The high-temperature steam directly supplies heat to the reboiler at the bottom of the tower, creating a closed-loop heat cycle and significantly reducing the consumption of external steam; Pre concentrate the aqueous solvent to a high concentration to reduce the membrane module processing load.
2. Deep dehydration of pervaporation membrane
After distillation and concentration, the material is passed into a molecular sieve/inorganic permeable membrane module, relying on molecular sieve selectivity to allow water molecules to pass through the membrane layer and organic solvents to be intercepted; Vacuum pumping on the permeation side maintains the driving force for separation, without being limited by the vapor-liquid azeotropic equilibrium, and can deeply remove ultra-low moisture to tens of ppm.
3. Full process thermal integration coupling
The distillation waste heat is supplied to the membrane system for preheating, and the low-temperature permeate gas waste heat on the membrane side is recovered for preheating the feed. The energy is utilized in a cascade manner to eliminate energy waste from repeated heating and condensation.
3、 Core structure composition
Distillation tower, steam compression heat pump unit, pervaporation membrane stack (mainly inorganic NaA molecular sieve membrane), vacuum condensation system, multi-stage heat exchange waste heat recovery unit, PLC fully automatic control system, waste liquid recovery tank.
4、 Core advantages
1. Energy saving
Compared with traditional azeotropic distillation and ordinary distillation+membrane separation equipment, the comprehensive energy saving is 75% to 90%, and the steam consumption per ton of product can be reduced to less than 50kg, achieving near zero steam operation;
2. No additives, high product purity
No introduction of azeotropic extractants such as benzene and ethylene glycol, no solvent pollution, stable moisture content of the finished product ≤ 50ppm, meeting electronic and pharmaceutical grade solvent standards;
3. Adapt to thermal sensitive materials
Membrane separation at room temperature/low temperature to reduce solvent high-temperature decomposition and discoloration loss;
4. Small footprint, automated continuous operation
Modular integration reduces the footprint by more than 60% compared to double tower distillation, with fully automatic online temperature control, vacuum control, and automatic wastewater discharge, and minimal manual supervision;
5. High raw material recovery rate
By condensing and recovering the solvent carried by the side water phase, the total solvent recovery rate is ≥ 97.5%, reducing material loss costs.
5、 Mainstream application scenarios
Pharmaceutical and chemical industry: dehydration and recovery of raw material solvents such as anhydrous ethanol, isopropanol, tert butanol, tetrahydrofuran, etc;
Electronic semiconductors: deep purification using electronic grade solvents such as methanol, tetrafluoropropanol, and acetone;
Chemical industry: Separation of dimethyl carbonate (DMC)/methanol, esters, and ketones azeotropes;
New materials industry: various reactions involve the recycling and regeneration of aqueous organic solvents.
HDCP is the industry abbreviation for heat pump distillation coupled with pervaporation equipment. It is an integrated continuous chemical purification equipment that deeply integrates steam compression heat pump distillation with pervaporation (PV) membrane separation, specifically designed to solve the problem of azeotropic solvent dehydration.
2、 Core working principle
1. Heat pump distillation pre concentration
The raw materials are first sent to the distillation tower, and the steam at the top of the tower is heated and pressurized by the heat pump compressor. The high-temperature steam directly supplies heat to the reboiler at the bottom of the tower, creating a closed-loop heat cycle and significantly reducing the consumption of external steam; Pre concentrate the aqueous solvent to a high concentration to reduce the membrane module processing load.
2. Deep dehydration of pervaporation membrane
After distillation and concentration, the material is passed into a molecular sieve/inorganic permeable membrane module, relying on molecular sieve selectivity to allow water molecules to pass through the membrane layer and organic solvents to be intercepted; Vacuum pumping on the permeation side maintains the driving force for separation, without being limited by the vapor-liquid azeotropic equilibrium, and can deeply remove ultra-low moisture to tens of ppm.
3. Full process thermal integration coupling
The distillation waste heat is supplied to the membrane system for preheating, and the low-temperature permeate gas waste heat on the membrane side is recovered for preheating the feed. The energy is utilized in a cascade manner to eliminate energy waste from repeated heating and condensation.
3、 Core structure composition
Distillation tower, steam compression heat pump unit, pervaporation membrane stack (mainly inorganic NaA molecular sieve membrane), vacuum condensation system, multi-stage heat exchange waste heat recovery unit, PLC fully automatic control system, waste liquid recovery tank.
4、 Core advantages
1. Energy saving
Compared with traditional azeotropic distillation and ordinary distillation+membrane separation equipment, the comprehensive energy saving is 75% to 90%, and the steam consumption per ton of product can be reduced to less than 50kg, achieving near zero steam operation;
2. No additives, high product purity
No introduction of azeotropic extractants such as benzene and ethylene glycol, no solvent pollution, stable moisture content of the finished product ≤ 50ppm, meeting electronic and pharmaceutical grade solvent standards;
3. Adapt to thermal sensitive materials
Membrane separation at room temperature/low temperature to reduce solvent high-temperature decomposition and discoloration loss;
4. Small footprint, automated continuous operation
Modular integration reduces the footprint by more than 60% compared to double tower distillation, with fully automatic online temperature control, vacuum control, and automatic wastewater discharge, and minimal manual supervision;
5. High raw material recovery rate
By condensing and recovering the solvent carried by the side water phase, the total solvent recovery rate is ≥ 97.5%, reducing material loss costs.
5、 Mainstream application scenarios
Pharmaceutical and chemical industry: dehydration and recovery of raw material solvents such as anhydrous ethanol, isopropanol, tert butanol, tetrahydrofuran, etc;
Electronic semiconductors: deep purification using electronic grade solvents such as methanol, tetrafluoropropanol, and acetone;
Chemical industry: Separation of dimethyl carbonate (DMC)/methanol, esters, and ketones azeotropes;
New materials industry: various reactions involve the recycling and regeneration of aqueous organic solvents.
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