WO2016187928A1

WO2016187928A1 - Heat pump-based vaporization-condensation integrated machine and condensation method

Info

Publication number: WO2016187928A1
Application number: PCT/CN2015/082932
Authority: WO
Inventors: 刘远辉; 高翔
Original assignee: 广东芬尼克兹节能设备有限公司
Priority date: 2015-05-27
Filing date: 2015-06-30
Publication date: 2016-12-01
Also published as: CN104958928A

Abstract

Provided are a heat pump-based vaporization-condensation integrated machine and condensation method. The heat pump-based vaporization-condensation integrated machine comprises a first container (6), a third container (9), a fourth container (10), a separator (3), an air pump (4) and a heat pump system. As the heat pump-based vaporization-condensation integrated machine only needs to employ a heat exchange interface once to separate a condensed liquid, and utilizes the heat pump system to recycle a solvent, it requires no water consumption and features a simple structure, high processing efficiency and low power consumption. Performing separation twice at initial and final stages of condensation ensures that the condensed liquid is fully separated, and that the recycled solvent has a high purity. The use of mature heat pump technology ensures stability of a condensation facility. The heat pump-based vaporization-condensation integrated machine and condensation method can be widely applied in the technical field of condensation facilities.

Description

Heat pump evaporation condensing machine and concentration method

Technical field

The invention relates to the technical field of concentration equipment, in particular to a heat pump evaporation condensation integrated machine and a concentration method.

Background technique

The variety of Chinese medicinal materials has a wide range of pharmacological effects, and its curative effect is increasingly valued in the world today. Therefore, it has broad potential for development, and more and more people are investing in the research and development of Chinese medicinal materials. To realize the medicinal value of traditional Chinese medicine, Chinese medicine concentration is one of the key processes and technologies of modern Chinese medicine pharmaceuticals. The advanced technology of concentration technology directly affects the quality of medicines.

At present, the current Chinese medicine concentration methods include multi-effect evaporator, MVR evaporator, membrane separation, etc. Although these methods can achieve the concentration of traditional Chinese medicine, there are still the following shortcomings:

1. The multi-effect evaporator mode is that the steam is supplied by the boiler after three times of heat exchange with the feed liquid to separate the concentrate, but the system is complicated and energy-consuming, and the solvent vapor is recovered through the cold water provided by the cooling tower. After heat exchange, the water consumption is large;

2. The technology of the MVR evaporator is not mature and the practicability is not high;

3. The membrane separation method uses a separation membrane as a separation medium. When a pressure difference is applied to both sides of the separation membrane, the feed liquid is selectively permeated through the separation membrane to achieve the purpose of separating the concentrate, but the treatment efficiency is such a manner. Low, not suitable for large-scale operations.

Summary of the invention

In order to solve the above technical problems, the object of the present invention is to provide a heat pump evaporation and condensation integrated machine with high concentration efficiency, low energy consumption, low cost and long service life.

In order to solve the above technical problems, another object of the present invention is to provide a heat pump evaporation condensation concentration method with high concentration efficiency, low energy consumption, low cost, and long service life.

The technical solution adopted by the present invention is: a heat pump evaporation condensing integrated machine comprising a first container, a third container, a fourth container, a separator, an air pump and a heat pump system, the heat pump system including a condenser and an evaporator, The fourth container is in communication with the liquid inlet of the condenser, the first liquid outlet of the condenser is in communication with the third container, and the first air outlet of the condenser is in communication with the separator, and the separator includes a space and a second space, the first space of the separator is communicated with the air inlet of the evaporator through an air pump, and the second space of the separator is in communication with the third container through the second liquid outlet, the evaporator The third liquid outlet is in communication with the first container.

Further, a second container is further included, the second space of the separator is in communication with the second container through the second liquid outlet, and the second container is in communication with the third container.

Further, the separator is a gas-liquid separator.

Further, the fourth container is for placing a solution to be concentrated;

The third container is for collecting a concentrate;

The second container is for collecting a residual concentrate;

The first container is for recovering a solvent.

Further, the heat pump system further includes a compressor and a throttle device, and the compressor, the condenser, the throttle device, and the evaporator are sequentially cyclically connected.

Another technical solution adopted by the present invention is: a heat pump evaporation condensation concentration method, comprising the following steps:

A, using a heat pump condenser to heat the solution to be concentrated to obtain a separated concentrated liquid and a gaseous solvent;

B. further separating the gaseous solvent by using a separator to obtain a residual concentrated liquid and a high-purity gaseous solvent;

C. The heat pump evaporator is used to lower the temperature of the evaporated solvent and recover the liquid solvent.

Further, the concentrate in the step A and the residual concentrate in the step B are collected using the same apparatus.

Further, the solvent is water or an organic solvent.

The invention has the beneficial effects that: in the present invention, only the concentrated liquid is separated by one heat exchange interface, and the solvent is recovered by the heat pump system without using water, so the system is not only simple in structure, but also has high processing efficiency and low energy consumption; The two separations ensure sufficient separation of the concentrate and high purity of the recovered solvent; at the same time, the apparatus of the present invention also utilizes mature heat pump technology to ensure the stability of the concentration apparatus.

Another beneficial effect of the present invention is that in the present invention, only the concentrated liquid is separated by one heat exchange interface, and the solvent is recovered by the heat pump system without using water, so the system is not only simple in structure, but also has high processing efficiency and low energy consumption; Moreover, the two separations ensure the high separation of the concentrate and the high purity of the recovered solvent; at the same time, the method of the invention also utilizes the mature heat pump technology to ensure the stability of the concentration equipment.

DRAWINGS

Figure 1 is a schematic diagram of an all-in-one machine of the present invention.

2 is a flow chart of the steps of the method of the present invention.

Figure 3 is a structural view of a separator in the present invention.

Among them: 1, compressor, 2, condenser, 3, separator, 4, air pump, 5 evaporator, 6, first container, 7, throttling device, 8, second container, 9, third container, 10 , the fourth container, 21, the first air outlet, 22, the first refrigerant inlet, 23, the liquid inlet, 24, the first liquid outlet, 25, the first refrigerant outlet, 26, the first inner shell, 27, the first One Pipe, 31, first space, 32, second space, 33, second liquid outlet, 51, second refrigerant outlet, 52, air inlet, 53, third liquid outlet, 54, second refrigerant inlet, 55, a second pipe, 56, a second inner casing.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

Referring to Fig. 1, a heat pump evaporation condensing machine includes a first container 6, a third container 9, a fourth container 10, a separator 3, an air pump 4, and a heat pump system including a condenser 2 and an evaporator 5 The fourth container 10 is in communication with the liquid inlet 23 of the condenser 2, the first liquid outlet 24 of the condenser 2 is in communication with the third container 9, and the first air outlet 21 of the condenser 2 is separated from The separator 3 is connected, and the separator 3 includes a first space 31 and a second space 32, and the first space 31 of the separator 3 communicates with the air inlet 52 of the evaporator 5 through the air pump 4, the separator 3 The second space 32 communicates with the third container 9 through the second liquid outlet 33, and the third liquid outlet 53 of the evaporator 5 communicates with the first container 6.

Further, as a preferred embodiment, a second container 8 is further included, and the second space 32 of the separator 3 communicates with the second container 8 through the second liquid outlet 33, and the second container 8 and the third container 9 Connected.

Further, as a preferred embodiment, the separator 3 is a gas-liquid separator, and its specific structure is shown in FIG.

Further as a preferred embodiment, the fourth container 10 is used to place a solution to be concentrated;

The third container 9 is for collecting concentrated liquid;

The second container 8 is used to collect residual concentrated liquid;

The first container 6 is used to recover a solvent.

Further as a preferred embodiment, the heat pump system further includes a compressor 1 and a throttling device 7, and the compressor 1, the condenser 2, the throttling device 7, and the evaporator 5 are sequentially circulated.

The working principle of the heat pump system is as follows: the compressor discharges the high-temperature and high-pressure refrigerant gas, enters the first inner casing through the first refrigerant inlet, and simultaneously enters the solvent of the first pipeline of the condenser to exchange heat, and becomes a low-temperature high-pressure refrigerant. The liquid then enters the throttling device through the first refrigerant outlet to be throttled, becomes a low-temperature low-pressure refrigerant liquid, and then enters the second pipe through the second refrigerant inlet and simultaneously enters the solvent vapor in the second inner casing of the evaporator. The heat exchange becomes a low-temperature low-pressure refrigerant gas, and returns to the compressor through the second refrigerant outlet.

Referring to Figure 2, a heat pump evaporation condensation concentration method includes the following steps:

Taking the drug-dissolved ethanol as an example, the ethanol liquid is passed through the liquid inlet to the condenser, and the ethanol absorbs the heat of the high-temperature high-pressure refrigerant gas inside the condenser and evaporates, and the ethanol solvent in the ethanol liquid evaporates into a gas, and Concentrated in ethanol solution The liquid is separated and then flows into the third container through the first liquid outlet. The ethanol vapor flows into the gas-liquid separator through the first gas outlet, and the gas-liquid separator separates the concentrated liquid remaining in the ethanol vapor, enters the second container through the second liquid outlet, and then flows back to the third container.

The pure ethanol vapor from the gas-liquid separator is driven by the air pump to enter the evaporator through the air inlet, and exchanges heat with the low-temperature low-pressure refrigerant liquid inside the evaporation tube, and the ethanol vapor is cooled to become an ethanol liquid, and then passes through the third. The liquid outlet enters the first container for use.

Further as a preferred embodiment, the concentrate in step A and the residual concentrate in step B are collected using the same apparatus.

Further as a preferred embodiment, the solvent is water or an organic solvent such as ethanol.

The above is a detailed description of the preferred embodiment of the present invention, but the present invention is not limited to the embodiment. The technology of the present invention belongs to the technical field of concentration equipment, and is not only suitable for concentration of traditional Chinese medicine, but also for fractionation of distilled oil and distilled water. It is to be understood that a person skilled in the art can make various equivalents or substitutions without departing from the spirit of the invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.

Claims

A heat pump evaporation condensing machine characterized by comprising a first container (6), a third container (9), a fourth container (10), a separator (3), an air pump (4) and a heat pump system, the heat pump The system includes a condenser (2) and an evaporator (5), the fourth vessel (10) is in communication with a liquid inlet (23) of the condenser (2), and the first liquid of the condenser (2) The mouth (24) is in communication with the third container (9), the first air outlet (21) of the condenser (2) is in communication with the separator (3), and the gas-liquid separator (3) includes a first space (31) and a second space (32), the first space (31) of the separator (3) is in communication with an air inlet (52) of the evaporator (5) via an air pump (4), the separator ( The second space (32) of 3) is in communication with the third container (9) through the second liquid outlet (33), the third liquid outlet (53) of the evaporator (5) and the first container (6) Connected.
The heat pump evaporating and condensing machine according to claim 1, further comprising a second container (8), wherein the second space (32) of the separator (3) passes through the second liquid outlet (33) In communication with the second container (8), the second container (8) is in communication with the third container (9).
The heat pump evaporating and condensing machine according to claim 1, characterized in that the separator (3) is a gas-liquid separator.
The heat pump evaporating and condensing machine according to claim 1, wherein the fourth container (10) is for placing a solution to be concentrated;

The third container (9) is for collecting a concentrate;

The second container (8) is for collecting a residual concentrate;

The first container (6) is used to recover a solvent.
The heat pump evaporating and condensing machine according to claim 1, wherein said heat pump system further comprises a compressor (1) and a throttling device (7), said compressor (1), a condenser (2) The throttling device (7) and the evaporator (5) are sequentially circulated and connected.
The heat pump evaporation condensation concentration method is characterized in that the following steps are included:

A, using a heat pump condenser to heat the solution to be concentrated to obtain a separated concentrated liquid and a gaseous solvent;

B. further separating the gaseous solvent by using a separator to obtain a residual concentrated liquid and a high-purity gaseous solvent;

C. The heat pump evaporator is used to lower the temperature of the evaporated solvent and recover the liquid solvent.
The heat pump evaporation condensation concentration method according to claim 6, wherein the concentrate in the step A and the residual concentrate in the step B are collected using the same apparatus.
The heat pump evaporation condensation concentration method according to claim 6, wherein the solvent is water or an organic solvent.