应用领域

Boiling point close to the separation of components;Large amount of steam and circulating water, high price;Widely used in methanol, ethanol, isopropyl alcohol, acetone, acetonitrile, tetrahydrofuran, dichloromethane, ethyl acetate, toluene and other organic solvents recovery and product separation and purification。

Chemical industry
Pharmaceutical industry
Environmental protection industry
biopharma

产品优势

自主
研发
Yaguang with rich experience in pharmaceutical machinery research and development and production, and subsidiary Loheng MVR steam recompression core technology, jointly developed。
助力
双碳
The system effectively solves the disadvantages of high energy consumption of traditional distillation, and has the advantages of good separation effect and obvious energy-saving advantages, helping to achieve the goal of double carbon。
50%
以上
Total system energy saving
80%
以上
Industrial steam saving

技术原理

Heat pump distillation process

The secondary steam is continuously compressed and circulates as a heating source

The low-temperature gas at the outlet is compressed by the compressor without condensation, increasing the temperature and pressure of the gas, increasing the enthalpy value of the gas, and then heating the material as the heat source of the reboiler, making full use of the latent heat of the gas, reducing the amount of generated steam and circulating water, and reducing the operating cost。

工艺展示

Indirect steam compression

After three stages of preheating, the feed mother liquor enters the rectification column，Separation is achieved in a rectification column，The liquid flows from the bottom of the distillation column into the reboiler，The coupling reboiler and the auxiliary reboiler are provided，The heat source of the coupled reboiler is the high-pressure gas at the compressor outlet，Auxiliary reboiler heat source raw steam，The gas at the top of the distillation column is compressed by the compressor to become high temperature and high pressure gas，High temperature and high pressure gas enters the coupled reboiler for heat exchange，After condensation, the light component is partially recovered and partially refluxing，The bottom of the tower reactor is divided into the preheater and the feed mother liquid after heat exchange。

Overhead steam compression type

In the traditional rectification tower system, a compressor is introduced, and the low-temperature and low-pressure steam at the top of the tower is compressed into high-temperature and high-pressure gas by the compressor, and then heated by the reboiler as a heat source for the material. The light component condensate after being condensed by the reboiler is buffered by the buffer tank, and then transported by the reflux pump, part of which is produced and part of which is returned。

Enterprise customization改造

Customized design on demand

Based on your existing heat pump distillation equipment and working conditions,

Provide MVR heat pump energy saving transformation solutions to maximize its energy saving effect;

According to different working conditions and technical requirements in different fields,

Different types of steam compressors with different pressure ratios are customized for specific environments。

System supporting compressor: centrifugal steam compressor
The MVR steam recompression energy saving technology is provided by Leheng, a subsidiary of Matt

01

Few domestic evaporator manufacturers have mastered the technology of steam power equipment

02

We have independent research and development rights in MVR core technology

03

Different types and models of compressors can be flexibly applied to different application scenarios。

叶轮
Compressor impellers are custom-designed to meet your demanding performance requirements

More than 30,000 hours of operating life

Through high-strength materials, precision processing technology, and strict testing methods, the service life of the impeller is guaranteed to reach 30,000 hours。

High strength titanium alloy TC4 carefully forged

The impeller material is forged from high strength, wear resistance and corrosion resistance titanium alloy material, and is finely milled by a five-axis linkage milling machine。

Excellent dynamic balancing performance and high standard of strength testing

Pass no lower than G1.Level 0 double-sided dynamic balancing, while not less than 15% of the working speed of the overspeed test to check its strength。

Pass strict factory inspection

After the processing of each impeller is completed, the flaw detection and three-dimensional coordinate and other strict factory testing, to ensure that the product delivered to you is in line with the quality requirements。

 

案例展示

Comparison of energy consumption between heat pump distillation and traditional distillation column

Jingmen a new material Co., LTD 2500m³/d ammonia nitrogen wastewater resource treatment system heat pump renovation project

The existing deammoniating tower is transformed into a heat pump, and the ammoniating steam at the top of the tower is transferred into the falling film evaporator for heat exchange with water. After heat exchange, the vaporized low-temperature and low-pressure water steam enters the compressor, and becomes high-temperature and high-pressure gas after compression into the reboiler coupled with the tower reactor for heat exchange with the tower reactor waste water, thus saving the industrial steam consumption。

Table 1 Parameters of ammonia nitrogen wastewater to be treated
序号 项目 单位 数值 备注
1 水量 m³/d 2500  
2 pH dimensionless 12~12.8  
3 NH3 g/L 5~10 In 6
4 Na2SO4 g/L 100~150  
5 Ni, Co, Mn mg/L 100~200 In 100
6 温度 ℃ 20~60  
7 Cl- mg/L ＜20  
Table 2 Exit parameters of the top tower reactor of the deammonia tower
On demand 项目 单位 数值 备注
Ammonia vapor at tower top outlet 流量 t/h 12.56 Inlet evaporator
组成   氨（20%）、水
温度 ℃ 95±5
压力 kPa 101
Tower kettle export high temperature water 流量 t/h 107 reboiler
组成   Water, sodium sulfate
温度 ℃ 105±5
压力 kPa 101

Comparison of energy consumption

Energy consumption comparison
Comprehensive field application, the theoretical calculation by Aspen Plus, a large-scale chemical simulation software, is as follows
Utility condition Circulating water 0.2 元/吨
电 0.7 kW.h
蒸汽 250 元/吨
One-year continuous operation 小时 7920 330天
Feed 105m³/h ammonia-containing wastewater, operating cost comparison table
设备 Utilities and electricity Conventional rectification Heat pump distillation
能耗 Yuan per hour 能耗 Yuan per hour
reboiler 蒸汽 9 t/h 2250 4 t/h 1000
condenser Circulating water 904 t/h 180.8 600 t/h 120
泵 电机 20 kw/h 14 90 t/h 63
compressor 电机 0 kw/h 0 670 t/h 469
合计 2445元 1652元
1 ton of wastewater per treatment 23.3元 15.7元
Annual operating cost 1936万元 1308万元
Annual savings 628万元
Through the comparison of the above table, it can be seen that the operating cost of heat pump rectification is 6.28 million yuan a year. The operating cost is calculated according to the parameters in Table 1 and Table 2 above. Changes in the actual operating data will affect the operating cost。