CN204841160U - Feed liquid enrichment facility - Google Patents

Abstract

The utility model discloses a feed liquid enrichment facility, it includes concentrated system, solvent recycling system and concentration governing system, utilize organic solvent to produce the solvent vapour at extrinsic cycle evaporation separator and carry out " vapour - gas " heating through the secondary heating ware with live steam, if the concentration of water extract, then carry out " vapour - vapour " hybrid heating principle with flash steam and live steam, as the heating heat source in fast pass to the extrinsic cycle evaporimeter, make the feed liquid maintain boiling state, part steam becomes the condensate behind the heater, feed liquid preheats the use, the liquid solvent that changes the attitude after the noncondensable gas in the steam and the heat exchange all will rationally be retrieved, its waste heat of make full use of continues to preheat for the feed liquid, it is final through the recovery cycle recycle of plate heat exchanger realization to organic solvent, the utility model discloses energy -conserving, high -efficient in concentration process and organic solvent (like ethanol etc. ) concentration process, consumption reduction, low -cost, low drop into and the concentration process in the concentration can be adjusted freely of liquid medicine.

Description

A feed liquid concentration device

technical field

The utility model relates to the technical field of medicine production, in particular to a feed liquid concentration device.

Background technique

The concentration of feed liquid is an indispensable key unit operation in the production of preparations. It is to heat the extract to a boiling state through heat transfer at a certain temperature, and to separate non-volatile or hard-to-volatile substances from volatile solvents to a certain To a certain extent, a concentrated liquid with a certain density is obtained.

At present, in the industrial production process, single-effect, double-effect and multi-effect concentrators are mostly used for the concentration of the extract. In recent years, MVR concentrators have also begun to be applied by a small number of companies. Single-effect or multi-effect concentration equipment is heated by steam interlayer. Its obvious disadvantages are long heat transfer time, high temperature, poor uniformity, etc., which are not conducive to heat sensitivity and volatile components. At the same time, this type of equipment has high cost, high energy consumption, and The production efficiency is low, and a large amount of steam is wasted. The MVR concentration is a technology that uses the compressor to heat up the recovered secondary steam and recycle it, thereby reducing the demand for external energy. Compared with single-effect and multi-effect concentrators, MVR concentrators have the advantages of high efficiency, low energy consumption, and small space. However, the MVR concentrator is expensive, noisy, high maintenance cost, low density of concentrated liquid, and cannot be used to recover organic solvents (such as ethanol). However, in actual production, if the solvent of the feed liquid is an organic solvent (such as alcohol), the efficiency of the above-mentioned concentrator for recycling the organic solvent is low, resulting in a large amount of loss and waste of the organic solvent, resulting in an irrational use of resources.

Utility model content

The purpose of the utility model is to overcome the problems of high energy consumption and solvent waste in traditional evaporation concentration and solvent recovery, and provide a material-liquid concentration device.

In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is:

A feed liquid concentration device, which includes a concentration system, a solvent recovery system and a concentration adjustment system, and the concentration system includes a fresh steam room;

The magnetic pump, the feed-liquid storage tank, the first plate heat exchanger, the second plate heat exchanger, the tube-and-tube preheater and the external circulation evaporator separator are connected in sequence by the feed-liquid pipe;

and

An external circulation heater connected to both the feed liquid pipe and the steam pipe of the external circulation evaporation separator;

A secondary heater is provided on the steam pipeline connecting the external circulation evaporative separator and the external circulation heater, and a steam interlayer communicating with each other and the fresh steam room is provided outside the external circulation heater and the secondary heater.

The external circulation heater includes a gas-liquid separation chamber from top to bottom, a rising film tube heater and an inverted conical concentrated liquid outlet, and a steam interlayer is arranged outside the rising film tube heater.

The outlet of the concentrated liquid is divided into three paths after passing through the liquid outlet valve. The first path is connected to the concentration adjustment system, the second path is connected to the bottom feed port of the external circulation evaporation separator through the pipeline circulation pump, and the third path is connected to the external circulation evaporator. The feed port connection on the upper side of the separator.

The concentration adjustment system includes a heater, one end of the heater is connected to the concentrated liquid outlet, and the other end is connected to the feed port of the external circulation evaporation separator.

The solvent recovery system includes a sequentially connected plate condenser, condenser receiving tank, water ring vacuum pump and vacuum buffer tank, the plate condenser is arranged on the upper part of the condenser receiving tank, and the lower part of the condenser receiving tank is provided with a vacuum centrifugal pump , the water outlet of the vacuum buffer tank communicates with the water inlet of the water ring vacuum pump again.

The first plate heat exchanger is provided with a waste heat inlet and a waste heat outlet, the waste heat inlet is connected with the steam interlayer outlet of the rising film tube heater to form the first waste steam preheating of the feed liquid, and the waste heat outlet is connected with the plate condensing device connection.

Both the plate preheater and the tube preheater are provided with steam preheating ports, and the steam interlayer outlets of the secondary heater are respectively connected with the steam preheating ports of the plate preheater and the tube preheater to form The second and third residual steam preheating of feed liquid.

A filter is provided between the magnetic pump and the feed liquid storage tank.

An insulation layer is provided outside the steam interlayer of the secondary heater.

Beneficial effects of the utility model:

The utility model is energy-saving, high-efficiency, consumption-reducing, low-cost, and low-input during the concentration process and the concentration process of organic solvents (such as ethanol, etc.). "Steam-gas" heating, if it is the concentration of the water extract, the secondary steam and the fresh steam are heated in the way of "steam-steam" mixing, and finally sent to the external circulation evaporator as a heating heat source, so that the feed liquid Keep the boiling state, part of the steam turns into condensate after passing through the heater, and the feed liquid is preheated for use. The non-condensable gas in the steam and the liquid solvent after heat exchange will be recovered reasonably, and the remaining heat will be fully utilized to continue to preheat the feed liquid. Finally, the recovery and recycling of organic solvents is realized through the plate heat exchanger. The utility model is energy-saving, high-efficiency, consumption-reducing, low-cost, low-investment and concentrated during the concentration process and organic solvent (such as ethanol, etc.) The concentration of Chinese medicinal liquid can be adjusted freely.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: external circulation heater 1, external circulation evaporation separator 2, secondary heater 3, shell and tube preheater 4, second plate heat exchanger 5, first plate heat exchanger 6, pipeline circulation pump 7 , plate condenser 8, condenser receiving tank 9, feed liquid storage tank 10, water ring vacuum pump 11, vacuum buffer tank 12, magnetic pump 13, filter 14, vacuum centrifugal pump 15, heater 16, gas-liquid separation chamber 1-1, rising film tube heater 1-2, concentrated liquid outlet 1-3, steam valve 100, 101.

Detailed ways

The utility model can further describe the utility model through the following examples, however, the scope of the utility model is not limited to the following examples, and various changes can be made within the scope not departing from the gist of the utility model.

Embodiment 1: see as shown in Figure 1.

A feed liquid concentration device, which includes a concentration system, a solvent recovery system and a concentration adjustment system, and the concentration system includes a fresh steam room;

The magnetic pump 13, the feed-liquid storage tank 10, the first plate heat exchanger 6, the second plate heat exchanger 5, the tube-and-tube preheater 4 and the external circulation evaporation separator 2 are sequentially connected by the feed-liquid pipe;

and

An external circulation heater 1 connected to both the feed liquid pipe and the steam pipe of the external circulation evaporation separator 2;

A secondary heater 3 is provided on the steam pipeline connected between the external circulation evaporation separator 2 and the external circulation heater 1, and the exterior of the external circulation heater 1 and the secondary heater 3 are connected to each other and communicated with the fresh steam chamber. steam interlayer.

The outer circulation heater 1 includes a gas-liquid separation chamber 1-1 from top to bottom, a rising film tube heater 1-2 and an inverted tapered concentrate outlet 1-3, and the steam interlayer is arranged in the rising film column Tube heaters 1-2 external.

The outlet 1-3 of the concentrated solution is divided into three paths after passing through the liquid outlet valve, the first path is connected with the concentration adjustment system, the second path is connected with the feed port at the bottom of the external circulation evaporation separator 2 through the pipeline circulation pump 7, and the third path is The road is connected with the feed port on one side of the upper part of the external circulation evaporation separator 2.

The concentration adjustment system includes a heater 16, one end of the heater 16 is connected to the concentrated liquid outlet 1-3, and the other end is connected to the feed port of the external circulation evaporation separator 2.

The solvent recovery system includes a plate condenser 8, a condenser receiving tank 9, a water ring vacuum pump 11 and a vacuum buffer tank 12 connected in sequence, the plate condenser 8 is located at the top of the condenser receiving tank 9, and the condenser receiving tank 9 The bottom is provided with a vacuum centrifugal pump 15, and the water outlet of the vacuum buffer tank 12 communicates with the water inlet of the water ring vacuum pump 11 again.

The first plate heat exchanger 6 is provided with a waste heat inlet and a waste heat outlet, and the waste heat inlet is connected with the steam interlayer outlet of the rising film tube heater 1-2 to form the first residual steam preheating of the feed liquid, and the waste heat The outlet is connected with plate condenser 8.

The second plate heat exchanger 5 and the tube-and-tube preheater 4 are all provided with a steam preheating port, and the steam interlayer outlet of the secondary heater 3 is connected to the second plate heat exchanger 5 and the tube-and-tube preheater respectively. The steam preheating ports of 4 are respectively connected to form the second and third residual steam preheating of the feed liquid.

A filter 14 is provided between the magnetic pump 13 and the feed liquid storage tank 10 .

The exterior of the steam interlayer of the secondary heater 3 is provided with an insulating layer.

Concentration process of the feed liquid: the feed liquid is pumped into the filter 14 through the magnetic pump 13 for filtration, and the filtrate enters the feed liquid storage tank 10 for storage, and the reserve feed liquid is preheated for the first time through the first plate heat exchanger 6, and then to The second plate heat exchanger 5 is preheated for the second time, and then the shell and tube preheater 4 is preheated for the third time, and finally enters the external circulation evaporator separator 2, and the circulating pump 7 is turned on at this time. Squeeze into the outer circulation heater 1.

When the feed liquid solvent is water, close the steam valve 101 of the steam interlayer of the secondary heater 3, open the steam valve 100 of the steam interlayer of the rising film tube heater 1-2, and the secondary heat coming out of the external circulation evaporation separator 2 The steam is mixed with the fresh steam at the steam inlet 1-21 of the external circulation heater 1 for supplementary heating. The temperature of the mixed steam increases, and the enthalpy increases, and enters the external circulation heater 1 to heat the liquid medicine.

When the feed liquid solvent is ethanol, close the steam valve 100 and open the steam valve 101 to make the fresh steam in the secondary heater 3 circulate the solvent vapor from the evaporation separator 2 for indirect "steam-gas" heating. The heated steam is passed into the external circulation heater 1 to heat the concentrated feed liquid in the tubes.

The condensed water in the interlayer of the outer circulation heater 1 enters the waste heat inlet of the first plate heat exchanger 6 to preheat the residual steam for the first time, and the waste heat outlet is recovered through the solvent recovery system. The non-condensable gas is pumped out by the water ring vacuum pump 11.

The residual steam from the secondary heater 3 is recovered and fed to the steam preheating ports of the second plate heat exchanger 5 and the tube-and-tube preheater 4 to preheat the feed liquid for the second and third times. The final concentrated liquid of the feed liquid in the external circulation heater 1 is discharged from the liquid outlet valve at the lower end thereof.

Solvent recovery process: When the solvent of the feed liquid needs to be recovered, the water ring vacuum pump is turned on to evacuate the external circulation heater 1, and the steam is pumped into the plate condenser 8 to condense and then flows into the condensate receiving tank 9. The steam is in the rising film column After condensing in the interlayer of the tube heater 1-2, the condensate outlet at the lower part is passed to the first plate heat exchanger 6 to preheat the feed liquid and then flow to the condensate receiving tank 9 for recovery.

Concentration adjustment process: when the medicinal liquid is concentrated to a higher concentration, the heater 16 can be started, and the concentrated liquid enters the heater 16 from the outer circulation heater 1, and the vapor-liquid separation is carried out through the outer circulation evaporation separator 2, and then returns to the outer circulation. Heating in the circulation heater 16, circulation, releases directly after the medicinal liquid is concentrated to the required concentration.

Claims (9)

1. a concentration device for material liquid, it comprises concentration systems, solvent recovering system and density Adjusting System, it is characterized in that,

Described concentration systems comprises live steam room;

The magnetic drive pump (13) that feed liquid pipe connects successively, feed liquid storage tank (10), the first plate type heat exchanger (6), the second plate type heat exchanger (5), calandria preheater (4) and external circulation evaporation separator (2);

And

The external circulation heater (1) be all communicated with feed liquid pipe and the steam pipe of external circulation evaporation separator (2);

The steam pipework that described external circulation evaporation separator (2) is connected with external circulation heater (1) is provided with after-heater (3), and external circulation heater (1) and the outside of after-heater (3) are provided with and are interconnected and the steam jacket be communicated with live steam room.

2. a kind of concentration device for material liquid according to claim 1, it is characterized in that, described external circulation heater (1) comprises gas-liquid separation chamber (1-1) from top to bottom, rise the concentrated solution outlet (1-3) of membrane type tube still heater (1-2) and back taper, steam jacket is located at and is risen membrane type tube still heater (1-2) outside.

3. a kind of concentration device for material liquid according to claim 2, it is characterized in that, described concentrated solution outlet (1-3) is divided into three tunnels behind the door through liquid valve, the first via is connected with density Adjusting System, second tunnel is connected with external circulation evaporation separator (2) bottom feed mouth through pipe circle pump (7), and the 3rd tunnel is connected with the charging aperture of external circulation evaporation separator (2) side, top.

4. a kind of concentration device for material liquid according to claim 3, it is characterized in that, described density Adjusting System comprises heater (16), heater (16) one end is connected with concentrated solution outlet (1-3), and the other end is connected with the charging aperture of external circulation evaporation separator (2).

5. a kind of concentration device for material liquid according to claim 2, it is characterized in that, described solvent recovering system comprises the plate-type condenser (8), condenser receiving slit (9), water-ring vacuum pump (11) and the vacuum buffer tank (12) that are communicated with successively, condenser receiving slit (9) top is located at by described plate-type condenser (8), condenser receiving slit (9) bottom is provided with vaccum centrifugal pump (15), and the delivery port of described vacuum buffer tank (12) is communicated with again with the water inlet of water-ring vacuum pump (11).

6. a kind of concentration device for material liquid according to claim 5, it is characterized in that, described first plate type heat exchanger (6) is provided with waste heat import and waste heat outlet, waste heat import and the steam jacket outlet rising membrane type tube still heater (1-2), vapour preheating more than the first time of formation feed liquid, waste heat outlet is connected with plate-type condenser (8).

7. a kind of concentration device for material liquid according to claim 1, it is characterized in that, described second plate type heat exchanger (5) and calandria preheater (4) are equipped with steam preheating mouth, and the steam jacket outlet of after-heater (3) is communicated with the second time and third time remaining vapour preheating that form feed liquid respectively respectively with the second plate type heat exchanger (5) and the steam preheating mouth of calandria preheater (4).

8. a kind of concentration device for material liquid according to claim 1, is characterized in that, be provided with filter (14) between described magnetic drive pump (13) and feed liquid storage tank (10).

9. a kind of concentration device for material liquid according to claim 1, is characterized in that, the outside of described after-heater (3) steam jacket is provided with heat-insulation layer.