SU1495367A1 - Method of automatic control of vinegear production process - Google Patents

Abstract

The invention relates to the food industry, for example, the production of alcoholic vinegar in a two-stage oxidizer battery. The aim of the invention is to increase the yield of acetic acid and reduce the loss of ethyl alcohol. The method eliminates the possibility of transition of the process to the "re-oxidation" stage due to the timely detection of deviations and the corresponding adjustment of the setting for the feed rate of the nutrient medium depending on the magnitude of the error signal of the current value of the specific conductivity of the culture fluid at the outlet of the oxidant from the specified value. The method will allow, with continuous monitoring of quality indicators, to increase the yield of acetic acid. 2 Il.

Description

one

(21) 4267221 / 30-13

(22) 06/22/87

(46) 07.23.89. Bksh. Number 27

(71) All-Union design and research institute for automation of the food industry of the Scientific and Production Association Food Processing Automation

(72) V.M. Klepikov, L.T. Korzhova, B, .I.Petrun and A.P.Pozdanova (53) 663.242 (088.8)

(56) Production technological regulations for the production of natural spirit vinegar in a continuous circulation method. VNRISHB. - M., 1983, p. 1-10.

(54) METHOD OF AUTOMATIC CONTROL OF THE PROCESS OF PRODUCTION OF ALCOHOL VINCER. .

(57) The invention relates to the food industry, for example, to the production of spirit vinegar in two hundred; foam battery oxidizers. The goal. The invention is an increase in the yield of acetic acid and a reduction in the loss of ethyl alcohol. The method eliminates the possibility of transition

process in the over-oxidation stage

behind

the expense of the timely detection of deviations and the corresponding adjustment of the setting for the feed rate of the nutrient medium depending on the magnitude of the error signal of the current value of the specific electric conductivity of the culture fluid at the outlet of the oxidant from the specified value. The method will allow, with continuous monitoring of quality indicators, to increase the yield of acetic acid. 2 or ..

i

SL

The invention relates to the food industry, such as the production of alcoholic vinegar in a two-stage oxidizer battery.

The purpose of the invention is to increase the yield of acetic acid and reduce the loss of ethyl alcohol.

Figure 1 shows the dependence of the working range of the concentration of P acetic acid on the specific conductivity of its solutions; on. Fig. 2 is a setup diagram implementing this method.

The installation contains an oxidizing agent 1 with the culture of acetic acid bacteria

(VHF) fixed on chips 2. A primary flow converter 3 is installed on the culture liquid pipeline, the output of which is connected to the input of the regulator 4, the output of the latter is connected to the input of the executive device 5. A primary pattern is installed on the nutrient supply pipe to the oxidizer T -. flow meter 6, the output of which is connected to the input of the regulator 7, the output of the latter is connected to the input of the actuating device 8. On the pipeline of the per-flow of the culture fluid; from oxidant 1 to final oxidis4

WITH

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The primary transducer 9 of the device measuring the specific conductivity of the culture cell is installed. The output of the primary transducer 9 is connected to the input of the functional unit 10. The second input of the functional unit 10 is connected to the output of the setpoint 11. The output of the functional unit 10 is connected to one of the inputs of the adder 12, and the second input of the adder is connected to the output of the setter 13. The output of the adder 12 is connected to the second input of the regulator 7.

The method is implemented as follows;

During the continuous oxidation process, for each value of the initial (starting) concentration of acetic acid, there is a strictly defined dilution rate corresponding to a given physiological concentration of a UCB culture. The dilution rate is determined by the formula

D, ST. (one)

where D is the dilution rate;

F is the amount of medium flowing through the oxidizing agent; V is the volume of the culture fluid participating in the oxidation process, m.

In accordance with (1), the stabilization of the starting (initial) concentration and, consequently, the concentration at the outlet of oxidant 1 at a given level can be done by adjusting the flow rate of the nutrient medium to the oxidant 1.

The unit 13 sets the task for the controller 7 for the flow rate (feed rate) of the nutrient medium in the oxidizer 1. The unit 11 sets the task for the value of the specific conductivity of the culture fluid corresponding to the required value of the concentration of acetic acid at the outlet of the oxidant (figure 1). In the event of a violation of the established dynamic equilibrium of the oxidation process

at the outlet of oxidant 1, the concentration of acetic acid changes, which is immediately perceived by the primary

Converter 9, the output signal of which is fed to the functional unit 10. Formed in function. on the unit 10, the signal is fed to the input of the adder 12 as a setpoint and then to the input of the regulator 7. The output signal of the regulator 7, controlled by the actuator 8, will change the flow rate of the nutrient medium in the oxidizer 1 so that its output provides the specified value of conductivity, Consequently, the concentration of acetic acid in the culture fluid. Using the proposed method of automatic control of the process of alcohol vinegar production will ensure continuity of control over the quality indicator of the oxidation process, timely change of the task for the nutrient media consumption and increase in the productivity of the production of alcohol vinegar with a reduction in alcohol losses per process.

Claims (1)

Invention Formula Method for automatic control of alcohol production process vinegar, providing for regulation. reduction of temperature and circulation rate of the culture fluid in the oxidizer with its continuous aeration and regulation of the feed rate of the feeder ™ depending on the set value, which is characterized in that, in order to increase the yield of acetic acid and reduce the loss of ethyl alcohol, the specific conductivity of the culture fluid at the outlet of the oxidizing agent is measured, compared with the specified value, and the task for the velocity of the nutrient medium to the oxidant is adjusted depending on the result of the comparison. Friendly environment In PtMc.% F4Fig. 2