CN1129097A

CN1129097A - External-heating type forced-circulation extracting-concentrating system

Info

Publication number: CN1129097A
Application number: CN 95111999
Authority: CN
Inventors: 仝爱星; 林载祁
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-02-14
Filing date: 1995-09-12
Publication date: 1996-08-21
Anticipated expiration: 2015-09-12
Also published as: CN1080553C

Abstract

The external-heating type forced-circulation extracting and concentrating system mainly for the use of Chinese-herbs extraction and concentration, includes an external-heating type extracting device A, a forced-circulation viporator B and a extracting-agent sump. A has the advantage of temp. regulatable, quick extracting speed, high yield, less steam consumption, high extracted liquid concentration, pollutionless and convenient for washing etc.. B has the advantage of high-speed of viporating and high concentrated-liquid concentration. Otherwise, the extracted liquid has less-opportunity to get contaminated, the heat utilization rate is high and the extracting-agent consumption is reduced.

Description

External-heating type forced-circulation extracting-concentrating system

The invention belongs to combination type and extract concentration systems, the extraction that is mainly used in the Chinese medicine medical material is with concentrated.

Concentrating of the extraction of Chinese medicine medical material, extracting solution all is the main process that Chinese medicine is produced, extraction, concentrator then are the key equipments that Chinese patent medicine is produced, the extraction equipment that generally adopt in present domestic pharmaceutical factory is the extraction pot of jacket type heating, promptly at extraction pot arranged outside heating jacket, dress Chinese medicine medical material and extractant in it adopt the active ingredient in the way extraction medical material that decocts.Medical material and extractant relative motion are little, and mass transfer effect is poor, and extraction time is long, distribute a large amount of waste vapour contaminated environment during deslagging; Small-sized evaporation concentrator generally adopts jacket type, and evaporation rate is slow, fouling on heating surface easily, and cause medicinal liquid rotten because of the inequality of being heated easily.

Purpose of the present invention will invent exactly that a kind of compact conformation, extraction and concentrated speed are fast, energy-saving effect significantly, no waste vapour contaminated environment, the energy-efficient easily nodal wood type external-heating type forced-circulation extracting-concentrating system of less scaling, cleaned and changed medical material.

Technical solution of the present invention is: a kind of external-heating type forced-circulation extracting-concentrating system, form by extraction and concentrated two large divisions.It is characterized in that: extract the external-heat extractor A that part is made up of heat exchanger 20, circulating pump 18, extraction pot 16 and volatile oil collecting tank 9; The forced-circulation evaporator B that concentrating part is made up of heater 30, circulating pump 27, double separator 42, condenser 33, lime set jar 35 and the extractant pump 39 of doing storage tank.

Described extraction pot 16 is cylindric, is respectively equipped with fast-open type top cover 7 and bottom 17 up and down, is used for loading the Chinese medicine medical material and gets rid of medicinal residues in extraction pot 16.The top of extraction pot 16 joins with the pipe 6 and the outlet of heat exchanger 20, the inlet of bottom and circulating pump 18 joins, the outlet of circulating pump 18 is joined through the inlet of pipe and valve 19 and heat exchanger 20, and the outlet of circulating pump 18 also is connected to the pipe and the valve 23 of discharging liquid in the extraction pot 16.The top of extraction pot 16 joins through the top of pipe 8 with volatile oil collecting tank 9.The top of volatile oil collecting tank 9 is provided with condenser 11, in order to condensation all from the volatile oil steam of extraction pot 16 and a small amount of extractant steam of carrying secretly.Condensed fluid is after the layering of the bottom of volatile oil collecting tank 9, and lower floor is the extractant layer, returns extraction pot 16 by outlet at bottom pipe 14 and valve 15, and the upper strata is the volatilization oil reservoir, is discharged outside the volatile oil collecting tank 9 by side pipe 12 and valve 13.

Described heat exchanger 20 is a tubular heat exchanger, and tube side is walked extracting solution, and shell side is walked heating steam or cooling water.Shell side is connected to heating steam pipe 3, control valve, condensed water drain valve 62, steam trap 22 and bypass valve 21.During extraction, feed heating steam to shell side, it is temperature required that the extracting solution in the heating tube side reaches extraction, to extract the active ingredient in the medical material.Shell side also is connected to cooling water inlet pipe and valve 60, cooling-water drain pipe and valve 61.Before the deslagging, feed cooling water with the extractant in the cooling tube side to shell side, extractant is cooled to medicinal residues 40～50 ℃ again, makes and does not distribute steam polluting environment when getting rid of medicinal residues.

Described vaporizer separator 42 is cylindric, and interior powder charge liquid is both as the separator of vaporizer indirect steam and concentrated solution, again as the medicinal liquid basin.The top of separator 42 has the pipe 31 and the outlet of heater 30 to join, and the inlet of bottom and circulating pump 27 joins.The inlet of circulating pump 27 also joins with the valve 23 that discharges extracting solution among the extractor A, pipe 24, filter 25 and valve 26, the outlet of circulating pump 27 is joined through the inlet of pipe and valve 29 and heater 30, and the outlet of circulating pump 27 also is connected to the pipe and the valve 28 of discharging concentrated solution among the vaporizer B.The upper end of separator 42 is connected to secondary steam pipe 32, passes to condenser 33, and condenser 33 bottoms are connected to discharging tube 34.

Described heater 30 is a tube still heater, and tube side is walked extracting solution, and shell side is walked heating steam.The top of shell side is connected to heating steam pipe 55 and control valve 54, and in order to feeding heating steam in shell side, the extracting solution in the heating tube side makes extracting solution evaporate extractant and concentrates; The bottom is connected to steam trap 51 and bypass valve 50, in order to the discharging condensed water.

Described discharging tube 34 joins with lime set jar 35, and lime set jar 35 tops are connected to the pipe 36 towards vacuum equipment, and lime set jar 35 bottoms have the pipe 38 and the inlet of extractant pump 39 to join.The inlet of extractant pump 39 also is connected to pipe and the valve 46 that links to each other from extractant storage tank 58, is to be used for replenishing lime set jar 35 to supply with the insufficient part of extractants to extraction pot 16 from the extractant of extractant storage tank 58.The outlet of extractant pump 39 is joined with the float-ball type LLCV 37 of pipe 40 and valve 41 and lime set jar 35, to keep lime set jar 35 interior liquid levels constant.The outlet of extractant pump 39 also is provided with pipe 43, valve 44, valve 47 and manages 48 and links to each other with extraction pot 16, lime set jar 35 interior warm lime sets can be delivered to extraction pot 16.The outlet of extractant pump 39 when extraction pot 16 does not need to supply with extractant, can be delivered to extractant storage tank 58 also with pipe 34, valve 44, valve 45 and manage 65 and link to each other with extractant storage tank 58 with lime set jar 35 interior lime sets.Extractant storage tank 58 also is provided with pipeline and the valve 59 that replenishes new extractant.

The present invention compared with prior art has following advantage:

1, adopt the external-heat extractor, the production efficiency height, steam consumption is few, and it is low that medicinal residues contain the drug effect composition, the yield height.

2, extraction pot Chinese crude drug pack completeness height, the extractant consumption is little with the ratio of filling medical material amount, the extract concentration height, the evaporation process extractant amount of steaming subsequently is few, saves steam consumption.

3, the operative temperature of extraction pot is lower than the boiling point of extractant, so the extractant amount of steaming is few, the condenser heat load of volatile oil collecting tank is low, and cooling water amount is few, and volatile oil collecting tank volume is little.

4, the indirect steam condensed fluid that contains Chinese medicine ingredients in the vaporizer returns in the extraction pot and reuses as extractant, promptly reduce new extractant consumption, reclaim the effective components of Chinese medicinal that indirect steam is entrained out again, also can alleviate the pollution of relief liquor simultaneously environment.

5, medicinal residues are just discharged from extraction pot after cooling, can not distribute steam polluting environment.

6, forced-circulation evaporator finishes liquid concentration height, separation chamber's double as liquor tank of vaporizer, compact conformation.

7, this system is a unit equipment, no hold-up vessel, and the high temperature extraction liquid of arranging from extractor directly enters vaporizer, has reduced the contaminated chance of medicinal liquid and has reduced heat loss.The tight Qi of equipment, less scaling, cleaning and the kind of more changing dressings all are easier to.

8, this system is applicable to that various extrectants (water, ethanol etc.) is to the extraction of different Chinese crude drugs and concentrating of extracting solution.

9, this system is a vessels not under pressure, saves material, makes, installs all more convenient.

Below in conjunction with accompanying drawing the present invention is further described:

Accompanying drawing is structure of the present invention and schematic flow sheet.

The flow process of external-heating type forced-circulation extracting-concentrating system of the present invention is as follows: the heating steam from pipe 1 is divided into two-way behind valve 2, one the tunnel through manage 3 and control valve 5 enter in the heat exchanger 20 of external-heat extractor A, extractant is heated to temperature required, condensed water is discharged by steam trap 22 or bypass valve 21, and 4 on valve is used for condensed fluid and dirt in the discharged steam pipeline; Another Lu Jingguan 55 and control valve 54 enter in the heater 30 of forced-circulation evaporator B, and from the medicinal liquid heating evaporation of external-heat extractor A, condensed water is discharged by steam trap 51 or bypass valve valve 50 with directly.Open the top cover 7 of extraction pot 16, the solid medical material is added in the extraction pot 16.In containing in the lime set jar 35 the warm lime set of pharmaceutically active ingredient through manage 38, extractant pump 39, pipe 43, valve 44, valve 47 and manage 48 and enter in the extraction pot 16, insufficient section is then by from extractant storage tank 58, valve 46, extractant pump 39, pipe 43, valve 44, valve 47 with manage 48 and enter extraction pot 16 as a supplement.Extractant directly contacts immersion with the solid medical material in extraction pot 16, dissolve the effective ingredient in the medical material.Bottom at extraction pot 16, medicinal liquid is boosted by circulating pump 18 after filtering, enter heat exchanger 20 by valve 19, in heat exchanger 20, be heated and heat up after manage the top of 6 inflow extraction pot 16, pyritous medicinal liquid passes the bottom that solid medical material in the extraction pot 16 continues to flow to behind the effective ingredient in the dissolving medical material extraction pot 16, repeats top flow process again, and medicinal liquid is constantly flowed in extractor A circularly, accelerate extraction rate, improved extraction efficiency and yield.Evaporable volatile oil steam enters volatile oil collecting tank 9 with a small amount of extractant steam of carrying secretly through managing 18 in extraction pot 16, after the 11 outer surface condensations of volatile oil collecting tank 9 inner condensers, condensed fluid is at the bottom of volatile oil collecting tank 9 standing demix, the upper strata is a volatile oil, side pipe 12 and valve 13 by volatile oil collecting tank 9 are discharged, lower floor is an extractant, is turned back in the extraction pot 16 by pipe 14 and valve 15.From managing 49 cooling water, and discharge from managing 10 through valve 52 and pipe 53 condensers 11 that enter in the volatile oil collecting tank.After extracting for the first time, extracting solution enters in the double vaporizer separator 42 of doing liquor tank through pump 18, valve 23, pipe 24, filter 25, valve 26, still contains effective composition in the medicinal residues.So after the first time, extracting solution was discharged, introduce the warm lime set of self-solidifying flow container 35 and carry out second time from the extractant of extractant storage tank 58 and extract, effective ingredient in further extraction medicinal residues.Extraction time can be 2 times to 5 times, looks valuable the degree of medical material and different.After extraction is finished the last time, shut off valve 5, valve 62, stop to supply with heat exchanger 20 heating steams, simultaneously the extractant in the extractant storage tank 58 is sent in the extraction pot 16, open valve 60, valve 61 subsequently, in heat exchanger 20, feed cooling water, with the cooling extractant, extractant is cooled to uniform temperature with the medicinal residues in the extraction pot 16 again, closes valve 19, valve 60, valve 61 then, drive valve 23, valve 63, make extractant, enter in the extractant storage tank 58 through managing 64, managing 59.After the emptying extractant, open the bottom 17 of extraction pot 16, get rid of medicinal residues.Extracting solution in the vaporizer separator 42 boosts through circulating pump 27, enter heater 30 by valve 29, being heated in heater 30 heats up flows into separators 42 after manage 31, evaporation and indirect steam separated with medicinal liquid in separator 42, and the medicinal liquid after the separation continues to participate in circulation next time.Owing to constantly evaporate extractant, make the continuous enrichment of medicinal liquid, final concentrated solution is discharged through pump 27 and valve 28.Isolated indirect steam enters condensation in the condenser 33 by pipe 32 in separator 42, and condensed lime set enters lime set jar 35 through managing 34, and the top of lime set jar 35 has pipe 36 to connect vacuum system, to keep the vacuum in the vapo(u)rization system.In order to keep certain liquid level in the lime set jar 35, float-ball type LLCV 37 is equipped with in the bottom of lime set jar 35.When being lower than the setting liquid level, extractant through manage 38, extractant pump 39, pipe 40, valve 41 and float-ball type LLCV 37 enter lime set jar 35, when reaching the setting liquid level, extractant then through manage 38, extractant pump 39, pipe 43, valve 44, valve 47 and manage 48 and enter in the extraction pot 16, when extraction pot 16 need not be supplied with extractant, then enter in the extractant storage tank 58 through valve 45, pipe 59.Enter condenser 33 from managing 56 cooling water, after the indirect steam condensation in the condenser, discharge by pipe 57.Valve 59 is used for replenishing new extractant in extractant storage tank 58.

Claims

1, a kind of external-heating type forced-circulation extracting-concentrating system, it is characterized in that: it is made up of extraction and concentrated two large divisions, extracts the external-heat extractor [A] that part is made up of heat exchanger [20], circulating pump [18], extraction pot [16] and volatile oil collecting tank [9]; The forced-circulation evaporator [B] that concentrating part is made up of heater [30], circulating pump [27], separator [42], condenser [33], lime set jar [35] and extractant pump [39].

2, external-heating type forced-circulation extracting-concentrating system according to claim 1, it is characterized in that: described extractor [A] is used for extracting the effective ingredient in the solid medical material, the top cover [7] and the bottom [17] of extraction pot [16] are the fast-open type structure, are convenient to add the solid medical material and discharge medicinal residues; Heat exchanger [20] with extractant be heated to extract temperature required; Circulating pump [18] circulates extractant in extraction pot [16] and heat exchanger [20], accelerate extraction rate and device efficiency.

3, external-heating type forced-circulation extracting-concentrating system according to claim 2, it is characterized in that: described forced-circulation evaporator [B] directly receives from the next extracting solution of external-heat extractor [A], through heating evaporation, enter in the separator [42] indirect steam is separated with concentrated solution, separator [42] is also used as liquor tank.

4, external-heating type forced-circulation extracting-concentrating system according to claim 3 is characterized in that: the warm lime set in the described lime set jar [35] turns back in the extractor [16], makes the extractant that contains middle pharmaceutically active ingredient obtain recycling.

5, external-heating type forced-circulation extracting-concentrating system according to claim 4, it is characterized in that: the volatile oil collecting tank [9] that is provided with condenser [11], all from the volatile oil steam of extraction pot [16] and a small amount of extractant steam, and isolate volatile oil in order to condensation.

6, external-heating type forced-circulation extracting-concentrating system according to claim 5, it is characterized in that: the bottom of described lime set jar [35] is provided with float-ball type LLCV [37], constant to keep the middle liquid level of lime set jar [35], guarantee that extractant pump [39] runs well.

7, external-heating type forced-circulation extracting-concentrating system according to claim 6, it is characterized in that: the heat exchanger [20] in the described extractor [A] is provided with cooling water pipe, can extract finally, not distribute steam polluting environment during the row of making medicinal residues the cooling of the medicinal residues in the extraction pot [16].