CN118846947A - A fully automatic ethanol blending system and method - Google Patents

A fully automatic ethanol blending system and method Download PDF

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CN118846947A
CN118846947A CN202410863854.6A CN202410863854A CN118846947A CN 118846947 A CN118846947 A CN 118846947A CN 202410863854 A CN202410863854 A CN 202410863854A CN 118846947 A CN118846947 A CN 118846947A
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ethanol
blending
concentrated
total amount
dilute
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CN118846947B (en
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魏骁
曲媛
金磊
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China Shipbuilding Group Corp 703 Research Institute
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China Shipbuilding Group Corp 703 Research Institute
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/139—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring a value related to the quantity of the individual components and sensing at least one property of the mixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2111—Flow rate
    • B01F35/21111—Mass flow rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/213—Measuring of the properties of the mixtures, e.g. temperature, density or colour
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/883—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using flow rate controls for feeding the substances

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

本发明提供一种全自动乙醇调配系统及方法，采用了全工况模型导入智能算法的模式，实现对乙醇调配系统介质选择，输入介质体积的精确控制；介质混配后，采用浓度微调的方式，准确快速的使调配乙醇达到用户需求，本方法控制方案已经过实际生产检验，效果理想。本发明根据车间各种乙醇的实际品种规格及其存量，全自动选择符合生产品种要求的调配介质、自动根据环境温度测算回收乙醇浓度、全自动进行介质调配已达到客户需求。

The present invention provides a fully automatic ethanol blending system and method, which adopts a mode of importing intelligent algorithms into a full-operating model to achieve accurate control of the medium selection and input volume of the ethanol blending system; after the medium is mixed, the concentration is fine-tuned to accurately and quickly make the blended ethanol meet the user's needs. The control scheme of this method has been tested in actual production and has ideal effects. According to the actual varieties and specifications of various ethanol in the workshop and their inventory, the present invention fully automatically selects the blending medium that meets the production variety requirements, automatically calculates the recovery ethanol concentration according to the ambient temperature, and fully automatically performs medium blending to meet customer needs.

Description

Full-automatic ethanol blending system and method
Technical Field
The invention belongs to the field of ethanol blending, and particularly relates to a full-automatic ethanol blending system and method.
Background
Currently, the medical industry, the food industry, the health care product industry and the beverage industry of China are vigorously developed, wherein the demands on an ethanol blending system are also increased, and the required automation and intelligence degree are also increased. In the aspect of full-automatic control, the existing alcohol blending system often has the problems that the degree of automation cannot be improved and the number of human intervention procedures is large. Because high-specification factories usually pay attention to the utilization problem of the recovered diluted ethanol in the production process, accurate measurement of the concentration of the recovered diluted ethanol at different environmental temperatures is required, the recovered ethanol of the same variety cannot be used in the blending process of producing ethanol of other varieties, and the concentration of the ethanol after blending needs to be accurately controlled. For the production requirements, a general automatic blending system cannot achieve full-automatic production blending, and the blending medium is required to be manually selected, and the concentration of the recovered ethanol is required to be manually calculated, so that the condition of mixed variety production caused by error analysis of workshop ethanol varieties is often caused, the quality of products is seriously influenced, and the concentration and the volume requirement of a user on the blended ethanol cannot be met due to inaccurate calculation.
Disclosure of Invention
The invention aims to provide a full-automatic ethanol blending system and method, which are used for fully automatically selecting blending media meeting the requirements of production varieties according to the actual variety specifications and the stock quantity of various ethanol in a workshop, automatically calculating and recovering ethanol concentration according to the ambient temperature and fully automatically blending the media to meet the requirements of customers.
A full-automatic ethanol blending system comprises an ethanol blending tank; the top and the bottom of the ethanol blending tank are respectively connected with the drinking water channel and the sewage channel; the ethanol blending tank is connected with the conveying channel, and the conveying channel is connected with the concentrated ethanol channel, the fresh ethanol channel and the dilute ethanol channel; the conveying channel is also connected with a production and use channel for preparing ethanol and a circulating/conveying pump, and the circulating/conveying pump is connected with the sewage channel; the full-automatic ethanol blending system is controlled through a human-computer interaction interface operation panel.
Further, the concentrated ethanol channel, the fresh ethanol channel and the thin ethanol channel are respectively connected with a concentrated ethanol tank, a fresh ethanol tank and a thin ethanol tank, and the concentrated ethanol tank, the fresh ethanol tank, the thin ethanol tank and the ethanol blending tank are all provided with variety name setting and transferring functions, so that a system can accurately identify a medium which is allowed to participate in the ethanol blending at the present time.
Further, the ethanol blending tank is provided with an ethanol temperature monitoring transmitter and an ethanol liquid level detection radar liquid level meter, and a density/flow monitoring mass flowmeter is arranged on the conveying channel.
A full-automatic ethanol blending method comprises the following steps:
s1, inputting product variety names which are needed to participate in production in the ethanol preparation at the time, target concentration of the ethanol after the ethanol is expected to be prepared, target volume, concentration of concentrated ethanol and concentration of fresh ethanol into a human-computer interaction interface operation panel;
s2, the system automatically identifies the product variety name of each recovery thin ethanol storage tank and the product variety name calibrated by the concentrated ethanol storage tank, if the product variety name is consistent with the target variety name, the ethanol in the ethanol storage tank is allowed to participate in the preparation, and if the product variety name is inconsistent with the target variety name, the algorithm prohibits the preparation process;
S3, automatically opening a related automatic valve and a conveying pump by the system, conveying the recovered diluted ethanol with the name identical to the variety name of the target product into an ethanol blending tank, automatically opening the related automatic valve and a circulating/conveying pump after the ethanol in the blending tank reaches a certain liquid level, collecting the density of the ethanol in the blending tank in real time through a mass flowmeter when the recovered diluted ethanol enters the ethanol blending tank and circulates, and analyzing and entering different blending modes according to the concentration of the recovered diluted ethanol and the total volume of the diluted ethanol collected by the system at a previous stage:
if the recovered diluted ethanol concentration is greater than the target ethanol concentration:
The system preferentially judges whether the total amount of the recovered diluted ethanol meets the requirements of users by only blending the recovered diluted ethanol with workshop drinking water, and calculates according to the following formula according to the unchanged total amount of the pure ethanol before and after ethanol blending:
Wherein V h is the total amount of the diluted ethanol required in the mode, C h is the diluted ethanol concentration converted by an algorithm, V is the target ethanol preparation volume, and C is the target ethanol preparation concentration;
if the recovered diluted ethanol concentration is less than the target ethanol concentration:
Then the mode scheme of the mixing of the dilute ethanol and the concentrated ethanol is analyzed preferentially, and according to the formula of the volume relation, the total amount of the pure ethanol is unchanged before and after the mixing of the ethanol:
If the names of all varieties in the corresponding systems of all the recovered dilute ethanol storage tanks in the workshop do not meet the preparation conditions, the system preferentially selects the rectified concentrated ethanol as a preparation medium, firstly judges the preparation scheme of the concentrated ethanol and the drinking water, and keeps the total amount of the pure ethanol unchanged before and after the ethanol is prepared:
S4, after the system judges that all media are input according to an algorithm in the system judging mode, the system enters a circulating concentration detecting mode, after the circulation is finished, the system detects the concentration of the solution through a mass flowmeter, and if the concentration error interval of the user is met, the distribution is finished; if the concentration is higher than the user concentration error interval, the system automatically opens the water inlet valve of the blending tank to circulate to the set time after 5 seconds, and re-detects; if the concentration is lower than the user concentration error interval, automatically starting a related automatic valve and a delivery pump by the system, inputting fresh ethanol for 5 seconds, then circulating to a set time, and re-detecting; and finishing the preparation until the concentration of the ethanol solution accords with the user concentration error interval.
Further, in S3, if the concentration of the recovered diluted ethanol is greater than the target ethanol concentration, the following modes are included:
If V h is smaller than the total amount of the actually recovered diluted ethanol meeting the variety condition in a workshop collected by the system, after calculation, the system automatically continues to input the diluted ethanol until the mass flow meter detects that the total amount of the diluted ethanol is V11, and after the diluted ethanol is fed, the system automatically opens a drinking water feeding automatic valve of a blending tank, and inputs drinking water into the blending tank, the total volume of the ethanol solution in the blending tank can be obtained according to the liquid level in the blending tank, the cross section area of a device column body and the volume of a device head measured by a radar liquid level meter, and when the total volume of the ethanol solution reaches V, the input of the drinking water is stopped, namely the mode ends the input process of the blending medium;
If V h is larger than the total amount of the actual recovered diluted ethanol meeting the production conditions in the workshop collected by the system, the system preferably calculates a mode scheme for preparing the diluted ethanol, the concentrated ethanol and the drinking water in a mode of preparing the diluted ethanol, and calculates according to the following formula according to the condition that the total amount of the pure ethanol is unchanged before and after the ethanol is prepared:
wherein V H is the total amount of dilute ethanol meeting the variety conditions in a workshop, V e is the total amount of required concentrated ethanol, and C e is the concentration of the concentrated ethanol;
Mode three, if V e is larger than the actual total amount of the concentrated ethanol meeting the variety conditions, adopting a mode of jointly preparing the diluted ethanol, the concentrated ethanol, the fresh ethanol and the drinking water for blending, and calculating according to the following formula according to the fact that the total amount of the pure ethanol is unchanged before and after ethanol blending:
Wherein V E is the total amount of concentrated ethanol meeting the variety conditions in a workshop, V n is the total amount of required fresh ethanol, and C n is the concentration of fresh ethanol.
Further, if the recovered diluted ethanol concentration in S3 is less than the target ethanol concentration, the following modes are included:
If V h,Ve is respectively smaller than the total amount of the dilute ethanol and the concentrated ethanol in the workshop, the dilute ethanol and the concentrated ethanol can be selected for blending, after calculation, the calculation is finished, the system automatically inputs the recovered dilute ethanol with the volume of V h into a blending tank through a mass flowmeter, and then opens a related automatic valve and a conveying pump, and inputs the concentrated ethanol with the volume of V e into the blending tank, namely the mode finishes the input process of a blending medium;
Mode five, if V h is smaller than the total amount of the dilute ethanol in the workshop and V e is larger than the total amount of the concentrated ethanol in the workshop, selecting the dilute ethanol, the concentrated ethanol and the fresh ethanol for blending, and according to the formula of volume relation, wherein the total amount of the pure ethanol is unchanged before and after the blending of the ethanol:
Mode six, if V h is greater than the total amount of dilute ethanol in the workshop and V e is less than the total amount of concentrated ethanol in the workshop, dilute ethanol, concentrated ethanol and drinking water can be selected for blending, and the total amount of pure ethanol is unchanged according to the condition before and after ethanol blending:
mode seven, if V h,Ve is respectively larger than the total amount of the dilute ethanol and the concentrated ethanol in the workshop, the dilute ethanol, the concentrated ethanol, the fresh ethanol and the drinking water can be selected for blending, and the mode three is called by the scheme.
Further, in the step S3, if the names of all varieties in the system corresponding to all the recovered dilute ethanol storage tanks in the workshop do not meet the preparation conditions, the following modes are included:
If V e is smaller than the total amount of the concentrated ethanol in the workshop, selecting a blending scheme of the concentrated ethanol and the drinking water, after calculation, measuring by a mass flowmeter, automatically inputting the volume of the concentrated ethanol of V e into a blending tank by a system, opening a drinking water valve at the top of the tank, and inputting the drinking water into the blending tank until the total volume of the ethanol solution in the blending tank reaches V;
Mode nine, if V e is larger than the total amount of the concentrated ethanol in the workshop, selecting a blending scheme of the concentrated ethanol, the fresh ethanol and the drinking water, and keeping the total amount of the pure ethanol unchanged before and after ethanol blending:
Mode ten, if all the variety names in the corresponding systems of the dilute ethanol storage tanks and the concentrated ethanol storage tanks in the workshop do not meet the variety conditions, selecting a blending mode of fresh ethanol and drinking water, and keeping the total amount of pure ethanol unchanged before and after ethanol blending:
the invention has the beneficial effects that:
1. According to the invention, after the actual density of the ethanol is measured by the mass flowmeter, the system can accurately obtain the actual concentration of the diluted ethanol and the prepared ethanol;
2. The invention combines the variety name, target concentration and volume of the required ethanol input by the user, and selects a proper ethanol preparation mode by utilizing the variety name and the volume of the ethanol in all the equipment of the collected workshop through an algorithm;
3. According to the invention, all medium volumes required by the preparation are calculated through algorithms of different modes, and liquid is sequentially fed and prepared according to the liquid feeding sequence set in the modes;
4. The system of the invention has stable operation, accurate control on concentration and volume, small algorithm system overhead, saving of ethanol raw material cost, saving of labor cost and improvement of product quality.
Drawings
FIG. 1 is a diagram of a fully automatic ethanol blending system according to the present invention;
FIG. 2 is a graph of ethanol density versus concentration in accordance with the present invention;
FIG. 3 is a table 1 showing the ethanol density-concentration parameters according to the present invention;
FIG. 4 is a table 2 showing the comparison of ethanol density-concentration parameters according to the present invention;
FIG. 5 is a schematic diagram of an operation panel of the fully automatic ethanol blending system according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the main actuators and measuring devices of the system are as follows:
an ethanol temperature monitoring transmitter TE1, an ethanol liquid level detection radar liquid level meter LT1 and a density/flow monitoring mass flowmeter AIT1.
Before the system algorithm is started, firstly, the names of product varieties, which are required to participate in production, of the ethanol required to be prepared at this time, the target concentration, the target volume and the concentration of the concentrated ethanol (the high-concentration ethanol obtained by recovering the diluted ethanol and purifying the diluted ethanol through an ethanol rectifying tower) are input into a human-computer interaction interface operation panel (shown in figure 5), the concentration of the purified high-concentration ethanol in each normal production process of the same ethanol rectifying tower is basically consistent, the high-concentration ethanol is directly input according to production experience, and the concentration of fresh ethanol (which is adjusted into a workshop from outside the workshop by an ethanol transport vehicle and is the standard value) is input.
After the input of the target parameters is completed, clicking a production start button, automatically identifying the product variety name (transmitted by the front-stage production equipment in the control system) calibrated by each recovered thin ethanol storage tank and concentrated ethanol storage tank by the system, if the product variety name is consistent with the target variety name, allowing the ethanol in the ethanol storage tank to participate in the preparation, and if the product variety name is inconsistent with the target variety name, prohibiting the preparation process by an algorithm.
In the principle of recycling the ethanol for production, the algorithm preferentially selects the recovered diluted ethanol as a blending medium, namely, if the recovered ethanol with the same name as the product of the target variety exists in any diluted ethanol storage tank, the ethanol is used up. According to the above conditions, the algorithm enters the following modes in steps and levels:
If the recovered thin ethanol with the name identical to the target product exists in any recovered thin ethanol storage tank, the system automatically opens a related automatic valve and a conveying pump, the recovered thin ethanol with the name identical to the target product variety is conveyed into an ethanol blending tank, after the ethanol in the blending tank reaches a certain liquid level, the related automatic valve and a circulating/conveying pump are automatically opened, the ethanol in the blending tank is circulated to ensure the uniform concentration of the ethanol, and according to the configuration of the system, the recovered thin ethanol passes through a mass flowmeter to acquire the density of the ethanol in the blending tank in real time when entering the ethanol blending tank and circulating, and the concentration of the ethanol in the blending tank can be converted in real time by writing an ethanol density-concentration curve in the figure 2 into an algorithm program. According to the concentration of the recovered diluted ethanol and the total volume of the diluted ethanol collected by the system at the previous stage, the algorithm analyzes and enters different preparation modes:
if the recovered diluted ethanol concentration is greater than the target ethanol concentration:
the algorithm preferentially judges whether the total amount of the recovered diluted ethanol meets the requirements of users by only blending the recovered diluted ethanol with workshop drinking water, and calculates according to the following formula according to the unchanged total amount of the pure ethanol before and after the ethanol blending:
VhCh＝VC (1)
wherein V h is the total amount of the diluted ethanol required in the mode, C h is the diluted ethanol concentration converted by an algorithm, V is the target ethanol preparation volume, and C is the target ethanol preparation concentration. The method can obtain:
Mode one: if V h is smaller than the total amount of the actually recovered diluted ethanol meeting the variety conditions in the workshop collected by the system, after calculation is finished, the system automatically continues to input the diluted ethanol until the mass flow meter detects that the total amount of the diluted ethanol is V h, and then the diluted ethanol liquid inlet is finished.
After the diluted ethanol liquid feeding is finished, the system automatically opens an automatic valve for feeding drinking water into the blending tank, drinking water is input into the blending tank, and the total volume of the ethanol solution in the blending tank can be obtained according to the liquid level in the blending tank, the cross section area of the equipment column body and the volume of the equipment head which are measured by the radar liquid level meter. Stopping inputting drinking water when the total volume of the ethanol solution reaches V, namely ending the process of inputting the blending medium in the mode.
Mode two: if V h is larger than the total amount of the actual recovered diluted ethanol meeting the production conditions in the workshop collected by the system, the system preferentially calculates a mode scheme for blending in a mode of jointly preparing the diluted ethanol, the concentrated ethanol and the drinking water. According to the condition that the total amount of pure ethanol is unchanged before and after ethanol preparation, the method is calculated according to the following formula:
VHCh+VeCe＝VC (3)
Wherein V H is the total amount of diluted ethanol meeting the variety conditions in the workshop, V e is the total amount of required concentrated ethanol, and C e is the concentration of the concentrated ethanol (if no concentrated ethanol meeting the variety conditions exists, the algorithm automatically judges that C e =0), and the method can obtain:
This mode may be used if V e is less than the total amount of actual concentrated ethanol meeting the variety conditions in the plant collected by the system.
After calculation, the system automatically inputs all recovered diluted ethanol meeting the variety conditions into the blending tank through a mass flowmeter, then opens a related automatic valve and a circulating/conveying pump, inputs concentrated ethanol with the volume of V e into the blending tank, finally opens a drinking water valve at the tank top, and inputs drinking water into the blending tank until the total volume of ethanol solution in the tank reaches V, namely the mode ends the process of inputting blending medium.
Mode three: if V e is larger than the total amount of the actual concentrated ethanol meeting the variety conditions, adopting a mode of jointly preparing dilute ethanol, concentrated ethanol, fresh ethanol and drinking water for preparing. According to the condition that the total amount of pure ethanol is unchanged before and after ethanol preparation, the method is calculated according to the following formula:
VHCh+VECe+VnCn＝VC (5)
Wherein V E is the total amount of concentrated ethanol meeting the variety conditions in a workshop, V n is the total amount of required fresh ethanol, and C n is the concentration of fresh ethanol, and the method can be used for obtaining:
After calculation, the system automatically inputs all recovered diluted ethanol meeting the variety conditions into the blending tank through a mass flowmeter, then opens related automatic valves and a delivery pump, inputs all concentrated ethanol meeting the variety conditions into the blending tank, then inputs fresh ethanol with volume V n into the blending tank, finally opens a drinking water valve at the tank top, inputs drinking water into the blending tank until the total volume of ethanol solution in the blending tank reaches V, i.e. the mode ends the process of inputting blending medium.
If the recovered diluted ethanol concentration C h is smaller than the target ethanol concentration C, the algorithm preferentially analyzes the mode scheme of the mixing of the diluted ethanol and the concentrated ethanol, and the total amount of the pure ethanol is unchanged before and after the mixing of the ethanol, and the volume relation formula is as follows:
VhCh+VeCe＝VC (7)
Vh+Ve＝V (8)
The method can obtain:
Mode four: if V h,Ve is respectively smaller than the total amount of the dilute ethanol and the concentrated ethanol in the workshop, the dilute ethanol and the concentrated ethanol can be selected for blending, after calculation, the calculation is finished, the system automatically inputs the recovered dilute ethanol with the volume of V h into a blending tank, then a related automatic valve and a conveying pump are started, and the concentrated ethanol with the volume of V e is input into the blending tank, namely the mode finishes the input process of the blending medium.
Mode five: if V h is smaller than the total amount of the dilute ethanol in the workshop and V e is larger than the total amount of the concentrated ethanol in the workshop, the dilute ethanol, the concentrated ethanol and the fresh ethanol can be selected for blending, and the total amount of the pure ethanol is unchanged according to the formula of the volume relation before and after the ethanol blending:
VhCh+VECe+VnCn＝VC (11)
Vh+VE+Vn＝V (12)
The method can obtain:
After calculation, the system automatically inputs V h volumes of recovered diluted ethanol into the blending tank through a mass flowmeter, then opens related automatic valves and circulating/conveying pumps, inputs all kinds of concentrated ethanol meeting variety conditions into the blending tank, and finally inputs V n volumes of fresh ethanol into the blending tank, namely the mode ends the process of inputting blending media.
Mode six: if V h is larger than the total amount of the dilute ethanol in the workshop and V e is smaller than the total amount of the concentrated ethanol in the workshop, dilute ethanol, concentrated ethanol and drinking water can be selected for blending, and the total amount of the pure ethanol is unchanged according to the condition before and after ethanol blending:
VHCh+VeCe＝VC (15)
The method can obtain:
After calculation, the system automatically inputs all diluted ethanol meeting the variety conditions into the blending tank through a mass flowmeter, opens a related automatic valve and a delivery pump, inputs concentrated ethanol with the volume of V e into the blending tank, finally opens a drinking water valve at the tank top, and inputs drinking water into the blending tank until the total volume of ethanol solution in the blending tank reaches V, namely the mode ends the process of inputting blending media.
Mode seven: if V h,Ve is respectively larger than the total amount of the dilute ethanol and the concentrated ethanol in the workshop, the dilute ethanol, the concentrated ethanol, the fresh ethanol and the drinking water can be selected for blending, and the algorithm scheme calls the mode III.
If the names of all varieties in the corresponding systems of all the recovered dilute ethanol storage tanks in the workshop do not meet the preparation conditions, the system preferentially selects the rectified concentrated ethanol as a preparation medium, firstly judges the preparation scheme of the concentrated ethanol and the drinking water, and keeps the total amount of the pure ethanol unchanged before and after the ethanol is prepared:
VeCe＝VC (17)
The method can obtain:
mode eight: if V e is smaller than the total amount of the concentrated ethanol in the workshop, selecting a blending scheme of the concentrated ethanol and the drinking water, after calculation, measuring by a mass flowmeter, automatically inputting the concentrated ethanol with the volume of V e into a blending tank by a system, opening a drinking water valve at the top of the tank, and inputting the drinking water into the blending tank until the total volume of the ethanol solution in the blending tank reaches V, namely ending the process of inputting the blending medium in the mode.
Mode nine: if V e is larger than the total amount of the concentrated ethanol in the workshop, selecting a blending scheme of the concentrated ethanol, the fresh ethanol and the drinking water, and keeping the total amount of the pure ethanol unchanged before and after ethanol blending:
VECe+VnCn＝VC (19)
The method can obtain:
After calculation, the system automatically inputs all the concentrated ethanol meeting the variety conditions into the blending tank through a mass flowmeter, opens a related automatic valve and a delivery pump, inputs fresh ethanol with the volume of V n into the blending tank, opens a drinking water valve at the tank top, and inputs drinking water into the blending tank until the total volume of ethanol solution in the blending tank reaches V, namely the mode ends the process of inputting blending media.
Mode ten: if the names of all varieties in the corresponding systems of the dilute ethanol storage tanks and the concentrated ethanol storage tanks in the workshop are not in accordance with the variety conditions, selecting a blending mode of fresh ethanol and drinking water, and keeping the total amount of pure ethanol unchanged before and after ethanol blending:
VnCn＝VC (21)
The method can obtain:
After calculation, the system automatically starts a related automatic valve and a delivery pump through a mass flowmeter, fresh ethanol with the volume of V n is input into the blending tank, a tank top drinking water valve is opened, drinking water is input into the blending tank until the total volume of ethanol solution in the blending tank reaches V, and the mode ends the process of inputting the blending medium.
After all media are input into the blending tank according to the algorithm in the system judging mode, the system enters a circulating concentration detecting mode, and the system starts related automatic valves and circulating/conveying pumps to enable ethanol solution in the blending tank to circulate to a set time (if the blending tank is provided with a stirring motor, the stirring motor is synchronously started), so that the ethanol concentration distribution is uniform.
After the circulation is finished, the system detects the concentration of the solution through a mass flowmeter, and if the concentration accords with a user concentration error interval, the allocation is finished; if the concentration is higher than the user concentration error interval, the system automatically opens the water inlet valve of the blending tank to circulate to the set time after 5 seconds, and re-detects; if the concentration is lower than the user concentration error interval, the system automatically opens the related automatic valve and the delivery pump, inputs fresh ethanol for 5 seconds, and then circulates to the set time for re-detection.
And finishing the preparation until the concentration of the ethanol solution accords with the user concentration error interval.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1.一种全自动乙醇调配系统，其特征在于，包括乙醇调配罐；所述乙醇调配罐顶部与底部分别与饮用水通道和排污通道连接；所述乙醇调配罐与输送通道连接，输送通道与浓乙醇通道、新鲜乙醇通道和稀乙醇通道连接；输送通道还与调配乙醇去生产使用通道和循环/输送泵连接，循环/输送泵与排污通道连接；所述全自动乙醇调配系统通过人机交互界面操作面板控制。1. A fully automatic ethanol blending system, characterized in that it comprises an ethanol blending tank; the top and bottom of the ethanol blending tank are respectively connected to a drinking water channel and a sewage channel; the ethanol blending tank is connected to a delivery channel, and the delivery channel is connected to a concentrated ethanol channel, a fresh ethanol channel and a dilute ethanol channel; the delivery channel is also connected to a channel for blended ethanol to be used in production and a circulation/delivery pump, and the circulation/delivery pump is connected to a sewage channel; the fully automatic ethanol blending system is controlled by a human-computer interaction interface operation panel. 2.根据权利要求1所述的一种全自动乙醇调配系统，其特征在于，所述浓乙醇通道、新鲜乙醇通道和稀乙醇通道分别与浓乙醇罐、新鲜乙醇罐和稀乙醇罐连接，浓乙醇罐、新鲜乙醇罐、稀乙醇罐和乙醇调配罐均配置品种名称设定及传递功能，使系统准确识别允许参与本次乙醇调配的介质。2. A fully automatic ethanol blending system according to claim 1, characterized in that the concentrated ethanol channel, fresh ethanol channel and dilute ethanol channel are connected to the concentrated ethanol tank, fresh ethanol tank and dilute ethanol tank respectively, and the concentrated ethanol tank, fresh ethanol tank, dilute ethanol tank and ethanol blending tank are all equipped with variety name setting and transmission functions, so that the system can accurately identify the media allowed to participate in this ethanol blending. 3.根据权利要求2所述的一种全自动乙醇调配系统，其特征在于，所述乙醇调配罐设有乙醇温度监测变送器(TE1)和乙醇液位检测雷达液位计(LT1)，输送通道上设有密度/流量监测质量流量计(AIT1)。3. A fully automatic ethanol blending system according to claim 2, characterized in that the ethanol blending tank is provided with an ethanol temperature monitoring transmitter (TE1) and an ethanol liquid level detection radar level meter (LT1), and a density/flow monitoring mass flowmeter (AIT1) is provided on the conveying channel. 4.基于权利要求3所述的一种全自动乙醇调配方法，其特征在于，包括以下步骤：4. A fully automatic ethanol preparation method according to claim 3, characterized in that it comprises the following steps: S1，在人机交互界面操作面板输入本次配制乙醇需要参与生产的产品品种名称、期望调配后乙醇的目标浓度、目标体积、浓乙醇和新鲜乙醇的浓度；S1, input the product name, target concentration, target volume, and concentrations of concentrated ethanol and fresh ethanol required for preparing ethanol in the human-computer interaction interface operation panel; S2，系统自动识别每一台回收稀乙醇储罐与浓乙醇储罐标定的产品品种名称，若与目标品种名称一致，则该乙醇储罐内的乙醇将被允许参与此次配制，若不一致，则被算法禁止此次配制过程；S2, the system automatically identifies the product name of each recovered dilute ethanol storage tank and concentrated ethanol storage tank. If the name is consistent with the target product name, the ethanol in the ethanol storage tank will be allowed to participate in the preparation. If it is inconsistent, the algorithm will prohibit the preparation process. S3，系统自动开启相关自动阀门与输送泵，将与目标产品品种名称一致的回收稀乙醇输送至乙醇调配罐内，在调配罐乙醇达到一定液位后，自动开启相关自动阀门与循环/输送泵，回收稀乙醇在进入乙醇调配罐及循环时会经过质量流量计以实时采集调配罐内乙醇密度，根据回收稀乙醇浓度以及系统在前级采集到的稀乙醇总体积，通过分析并进入不同调配模式：S3, the system automatically opens the relevant automatic valves and delivery pumps, and delivers the recovered dilute ethanol that matches the name of the target product to the ethanol blending tank. After the ethanol in the blending tank reaches a certain level, the system automatically opens the relevant automatic valves and circulation/delivery pumps. When the recovered dilute ethanol enters the ethanol blending tank and circulates, it passes through a mass flow meter to collect the ethanol density in the blending tank in real time. According to the concentration of the recovered dilute ethanol and the total volume of dilute ethanol collected by the system in the previous stage, different blending modes are entered through analysis: 若回收稀乙醇浓度大于目标乙醇浓度：If the recovered dilute ethanol concentration is greater than the target ethanol concentration: 系统优先判断回收稀乙醇的总量是否满足稀乙醇仅与车间饮用水调配即可满足用户需求，根据乙醇调配前后纯乙醇的总量不变，根据以下公式进行计算：The system first determines whether the total amount of recovered dilute ethanol meets the requirement that dilute ethanol can be mixed with workshop drinking water to meet user needs. The total amount of pure ethanol before and after mixing remains unchanged, and is calculated according to the following formula: 其中，Vh为该模式下所需稀乙醇总量，Ch为经算法换算后的稀乙醇浓度，V为目标乙醇配制体积，C为目标乙醇配制浓度；Wherein, Vh is the total amount of dilute ethanol required in this mode, Ch is the dilute ethanol concentration converted by the algorithm, V is the target ethanol preparation volume, and C is the target ethanol preparation concentration; 若回收稀乙醇浓度小于目标乙醇浓度：If the recovered dilute ethanol concentration is less than the target ethanol concentration: 则优先分析稀乙醇与浓乙醇调配的模式方案，根据乙醇调配前后纯乙醇的总量不变，以及体积关系公式：The priority is to analyze the mode of mixing dilute ethanol and concentrated ethanol, based on the fact that the total amount of pure ethanol before and after mixing remains unchanged, and the volume relationship formula: 若车间内所有回收稀乙醇储罐对应系统内品种名称均不符合配制条件，则系统优先选取精馏浓乙醇作为调配介质，并首先判断浓乙醇与饮用水的调配方案，根据乙醇调配前后纯乙醇的总量不变：If the names of the varieties in the corresponding system of all the recovered dilute ethanol storage tanks in the workshop do not meet the preparation conditions, the system will give priority to distilled concentrated ethanol as the preparation medium, and first determine the preparation scheme of concentrated ethanol and drinking water, according to the total amount of pure ethanol before and after ethanol preparation remains unchanged: S4，在系统判断模式所有介质皆按算法输入之调配罐后，系统进入循环浓度检测模式，循环结束后，系统通过质量流量计检测溶液浓度，若符合用户浓度误差区间则调配结束；若浓度高于用户浓度误差区间，则系统自动开启调配罐进饮用水阀5秒钟后循环至设定时间，重新检测；若浓度低于用户浓度误差区间，则系统自动开启相关自动阀门及输送泵，输入新鲜乙醇5秒钟后循环至设定时间，重新检测；直至乙醇溶液浓度符合用户浓度误差区间则调配结束。S4, after all media in the system judgment mode are input into the mixing tank according to the algorithm, the system enters the circulation concentration detection mode. After the cycle is completed, the system detects the solution concentration through the mass flow meter. If it meets the user's concentration error range, the mixing is completed; if the concentration is higher than the user's concentration error range, the system automatically opens the mixing tank's drinking water inlet valve for 5 seconds, then circulates to the set time and re-tests; if the concentration is lower than the user's concentration error range, the system automatically opens the relevant automatic valves and delivery pumps, inputs fresh ethanol for 5 seconds, then circulates to the set time and re-tests; the mixing is completed until the concentration of the ethanol solution meets the user's concentration error range. 5.根据权利要求4所述的一种全自动乙醇调配方法，其特征在于，所述S3中若回收稀乙醇浓度大于目标乙醇浓度时包括以下模式：5. A fully automatic ethanol preparation method according to claim 4, characterized in that if the concentration of the recovered dilute ethanol is greater than the target ethanol concentration, the S3 comprises the following modes: 模式一，若Vh小于系统采集的车间内符合品种条件的实际回收稀乙醇总量，则计算结束后，系统自动继续输入稀乙醇直至质量流量计测得进入稀乙醇总量为Vh时结束稀乙醇进液，稀乙醇进液结束后，系统自动开启调配罐进饮用水自动阀门，向调配罐中输入饮用水，根据雷达液位计测得调配罐内液体液位、设备柱体横截面积及设备封头体积可得调配罐内乙醇溶液总体积，当乙醇溶液总体积达到V时停止输入饮用水，即此模式结束调配介质输入过程；Mode 1: If V h is less than the total amount of diluted ethanol actually recovered in the workshop that meets the variety conditions and collected by the system, after the calculation is completed, the system will automatically continue to input diluted ethanol until the mass flow meter measures that the total amount of diluted ethanol entering is V h , and then the dilute ethanol liquid is fed. After the dilute ethanol liquid is fed, the system will automatically open the automatic valve for drinking water in the blending tank and input drinking water into the blending tank. The total volume of the ethanol solution in the blending tank can be obtained based on the liquid level in the blending tank measured by the radar level gauge, the cross-sectional area of the equipment column, and the volume of the equipment head. When the total volume of the ethanol solution reaches V, the input of drinking water is stopped, and this mode ends the input process of the blending medium. 模式二，若Vh大于系统采集的车间内符合生产条件的实际回收稀乙醇总量，系统优先计算用稀乙醇、浓乙醇与饮用水共同配制的方式进行调配的模式方案，根据乙醇调配前后纯乙醇的总量不变，根据以下公式进行计算：Mode 2: If V h is greater than the total amount of dilute ethanol actually recovered in the workshop that meets the production conditions collected by the system, the system will give priority to calculating the mode of mixing dilute ethanol, concentrated ethanol and drinking water. The total amount of pure ethanol before and after ethanol mixing remains unchanged, and the calculation is performed according to the following formula: 其中，VH为车间符合品种条件的稀乙醇总量，Ve为所需浓乙醇总量，Ce为浓乙醇浓度；Among them, VH is the total amount of dilute ethanol that meets the variety conditions in the workshop, Ve is the total amount of concentrated ethanol required, and Ce is the concentration of concentrated ethanol; 模式三，若Ve大于符合品种条件的实际浓乙醇总量，则采用稀乙醇、浓乙醇、新鲜乙醇与饮用水共同配制的方式进行调配，根据乙醇调配前后纯乙醇的总量不变，算法根据以下公式进行计算：Mode 3: If Ve is greater than the actual total amount of concentrated ethanol that meets the variety conditions, dilute ethanol, concentrated ethanol, fresh ethanol and drinking water are used for blending. The total amount of pure ethanol before and after blending remains unchanged, and the algorithm is calculated according to the following formula: 其中，VE为车间符合品种条件的浓乙醇总量，Vn为所需新鲜乙醇总量，Cn为新鲜乙醇浓度。Among them, VE is the total amount of concentrated ethanol that meets the variety conditions in the workshop, Vn is the total amount of fresh ethanol required, and Cn is the concentration of fresh ethanol. 6.根据权利要求5所述的一种全自动乙醇调配方法，其特征在于，所述S3中若回收稀乙醇浓度小于目标乙醇浓度包括以下模式：6. A fully automatic ethanol preparation method according to claim 5, characterized in that if the concentration of the recovered dilute ethanol is less than the target ethanol concentration in S3, the following modes are included: 模式四，若Vh，Ve均分别小于车间内稀乙醇、浓乙醇总量，则可选择稀乙醇、浓乙醇进行调配，计算结束后，通过质量流量计计量，系统自动向调配罐内输入Vh体积的回收稀乙醇后，开启相关自动阀门及输送泵，向调配罐内输入Ve体积的浓乙醇，即此模式结束调配介质输入过程；Mode 4: If V h and Ve are both less than the total amount of dilute ethanol and concentrated ethanol in the workshop, dilute ethanol and concentrated ethanol can be selected for blending. After the calculation is completed, the system automatically inputs V h volume of recovered dilute ethanol into the blending tank through mass flow meter measurement, and then opens the relevant automatic valves and delivery pumps to input Ve volume of concentrated ethanol into the blending tank. This mode ends the blending medium input process; 模式五，若Vh小于车间内稀乙醇总量，且Ve大于车间内浓乙醇总量，则选择稀乙醇、浓乙醇、新鲜乙醇进行调配，根据乙醇调配前后纯乙醇的总量不变，以及体积关系公式：Mode 5: If V h is less than the total amount of dilute ethanol in the workshop, and Ve is greater than the total amount of concentrated ethanol in the workshop, dilute ethanol, concentrated ethanol, and fresh ethanol are selected for blending. The total amount of pure ethanol before and after blending remains unchanged, and the volume relationship formula is: 模式六，若Vh大于车间内稀乙醇总量，且Ve小于车间内浓乙醇总量，则可选择稀乙醇、浓乙醇、饮用水进行调配，根据乙醇调配前后纯乙醇的总量不变：Mode 6: If V h is greater than the total amount of dilute ethanol in the workshop, and Ve is less than the total amount of concentrated ethanol in the workshop, dilute ethanol, concentrated ethanol, and drinking water can be selected for blending, according to which the total amount of pure ethanol before and after ethanol blending remains unchanged: 模式七，若Vh，Ve均分别大于车间内稀乙醇、浓乙醇总量，则可选择稀乙醇、浓乙醇、新鲜乙醇与饮用水进行调配，方案调用模式三。Mode seven: if V h and Ve are both greater than the total amount of dilute ethanol and concentrated ethanol in the workshop, dilute ethanol, concentrated ethanol, fresh ethanol and drinking water can be selected for mixing, and the solution calls mode three. 7.根据权利要求6所述的一种全自动乙醇调配方法，其特征在于，所述S3中若车间内所有回收稀乙醇储罐对应系统内品种名称均不符合配制条件包括以下模式：7. A fully automatic ethanol preparation method according to claim 6, characterized in that in said S3, if all the names of the varieties in the corresponding system of the recovered dilute ethanol storage tanks in the workshop do not meet the preparation conditions, the following modes are included: 模式八，若Ve小于车间内浓乙醇总量，则选择浓乙醇与饮用水的调配方案，计算结束后，通过质量流量计计量，系统自动向调配罐内输入Ve体积的浓乙醇后，开启罐顶饮用水阀门，向调配罐中输入饮用水,直至调配罐内乙醇溶液总体积达到V；Mode 8: If Ve is less than the total amount of concentrated ethanol in the workshop, the mixing scheme of concentrated ethanol and drinking water is selected. After the calculation is completed, the system automatically inputs Ve volume of concentrated ethanol into the mixing tank through the mass flow meter, then opens the drinking water valve on the tank top, and inputs drinking water into the mixing tank until the total volume of ethanol solution in the mixing tank reaches V. 模式九，若Ve大于车间内浓乙醇总量，则选择浓乙醇、新鲜乙醇与饮用水的调配方案，根据乙醇调配前后纯乙醇的总量不变：Mode nine: If Ve is greater than the total amount of concentrated ethanol in the workshop, the blending scheme of concentrated ethanol, fresh ethanol and drinking water is selected, based on the fact that the total amount of pure ethanol before and after ethanol blending remains unchanged: 模式十，若车间内所有回收稀乙醇储罐及浓乙醇罐对应系统内品种名称均不符合品种条件，则选择新鲜乙醇与饮用水的调配方式，根据乙醇调配前后纯乙醇的总量不变：Mode 10: If the names of the products in the corresponding system of all the recycled dilute ethanol storage tanks and concentrated ethanol tanks in the workshop do not meet the product conditions, the mixing method of fresh ethanol and drinking water is selected, and the total amount of pure ethanol before and after ethanol mixing remains unchanged:
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