Solvent Recycling

Pervaporation (PV) andvapor permeation (VP) are the separation processes by using the different adsorption and diffusion rates of each component in the membrane, driven by the chemical potential gradient of the permeating component. Among them, liquid feeding is called pervaporation, vaporfeeding is called vapor permeation. The permeate side is usually under negative pressure by using vacuum pump(or by gas purging oradsorption).



Energy saving: 30 - 50% energy saving compared with distillationCompact: only 15 x 1 / 3 of the distillation area
Emission reduction:single - pass yield > 99.8%Easy: Fully automatic control, plug and play
Extreme: product water content < 5ppmSafety: suitable for dehydration of flammable and explosive solvents


  • Product details
  • Table of parameters



For the mother liquor recycling in the refining process of pharmaceutical industry, our patented technology, SISIR (Solvent & Intermediate Simultaneously Recovery process), can realize the simultaneous recovery of both solvent and high value intermediates.

 

Our unique process, HiPLoT-PV (High Pressure Low Temperature Pervaporation), is suitable for t high efficiency and ultra-deepdehydrationof liquefied gas.



Application fields

 


Typical alcohol-water separation performance table

 

Componentfeed content(alcohols)temperature(oC)separationfactorThroughput(kg/m2h)
Methanol90.0wt.%60>100000.62
Methanol99.0wt.%100>10000.50
Ethanol90.0wt.%60>100002.37
Ethanol90.0 wt.%120>100004.62
Ethanol98.0 wt.%120>100001.85
n-Propanol90.0wt.%60>100002.69
i-Propanol90.0wt.%60>100002.55
n- Butanol90.0wt.%60>100002.80
t- Butanol90.0 wt.%60>100002.66
Glycol13wt.%120>1000010.0

Specifications


ItemContent
Feed conditionsCapacityAnnual output: 50 t ~ 300000 t
Feed conditionsvaporphase / liquid phase
Raw material compositionWater content: 100pm-50wt%
pH6-8
conductivity<10 us·cm-1
Other conditionsFree of substances that may contaminate the membrane(Hymater can provide solutions).
Operating conditionsoperating pressureFeed side0.1-1.4MPa.A
Permeate side100~8000Pa.A
Product parametersoperating temperature0-200℃
operating modeBatchBatch-wise / continuous
Product indexWater content: could be as low as 5ppm
Single pass recovery rate99.8%~100%
Impurity introductionNo metal ions introduced.



Typical case


i- propanol


ItemLow pressure steam / yuanPower / yuanCirculating cooling water/yuanchilled water/yuanSum
Distillation6202037---677
Adsorption3506020---430
Pervaporation872649126

1、Accounting example (2000 tons per year, the content of i-propanol increases from 85 % to 99.9 %)
2、The steam is RMB 200 Yuan/ t, the electricity is 0.7 Yuan/ kWh, the cooling water is 0.35Yuan/ t, and thechilled water is 1 Yuan/ t.
3、The data listed in the table are Yuan / t raw materials.

 

 

Acetonitrile


ItemLow pressure steam / yuanPower / yuanCirculating coolingchilled water/yuanSum
Distillation4603015---505
Pervaporation1001415120

1、Accounting example (4000 tons per year, the content of acetonitrile increases from 80% to 99.5%)
2、The steam is RMB 200 Yuan/ t, the electricity is 0.7 Yuan/ kWh, the cooling water is 0.35 Yuan/ t, and thechilled water is 1 Yuan/ t.
3、The data listed in the table are Yuan / t raw materials.

 


Tetrahydro Furan


ItemLow pressure steam / yuanPower / yuanCirculating cooling water/yuanchilled water/yuanSum
Distillation4002520---445
Pervaporation601212690

1、Accounting example (800 tons per year, the content of Tetrahydro Furan increases from 80% to 99.5%)
2、The steam is RMB 200 Yuan/ t, the electricity is 0.7 Yuan/ kWh, the cooling water is 0.35 Yuan/ t, and thechilled water is 1 Yuan/ t.
3、The data listed in the table are Yuan / t raw materials.

 


10t/day Preparation of 99.5% anhydrous ethanol from 95% ethanol


ItemAzeotropic distillation technologyzeolite membranetechnology
Annual processing capacity    t/year3300
Steam yuan/t product44092
circulating wateryuan/t product1918
electric energyyuan/t product810
Azeotropicentrainer yuan/t product500
Depreciation of membranes (5 years)yuan/t product058.8
Depreciation of equipment (10 years)yuan/t product4031.5
Unit product operation costyuan/t product557210.3
Total operating energy consumption (10,000 yuan / year) 183.869.4
Total income (10,000 yuan / year) 114.4
Price of equipment (10,000 yuan) 130200
Increase in investment (10,000 yuan) 70
Payback period of investment 223

 


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Business Tel:+86-0574-87647844
Fax:+86-0574-87648996
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