Automatic process control aeration during the fermentation of organic raw materials

 

(57) Abstract:

The invention relates to the microbiological industry, and can be used in agriculture to control the fermentation process of organic raw materials. The technical result is to expand the functionality of the control system aeration during the fermentation of organic materials. Automatic process control aeration during the fermentation of organic raw materials contains the fermenter with the feedstock, the blower and the control loop air supply for aeration. It includes sensor oxygen content in the feedstock, the airflow switch and the actuator. Introduction to control system temperature sensor and functional Converter that implements the dependence of the oxygen content in the feedstock from its temperature, allows to compare the actual level of oxygen in the raw material required and then to adjust the air supply in raw materials. 1 Il.

The invention relates to the microbiological industry, and can be used in agriculture to control the fermentation process of organic raw materials.

The world is 8, class. C 12 Q 3/00, 1986, prototype), containing the fermenter and the stabilization loop air supply for aeration, which includes the oxygen sensor in the processed substrate, the Converter oxygen concentration, air flow sensor, air flow regulator and the actuator. In this system implements a process of cultivation of microorganisms, monitored only by the level of oxygen in the substrate: O2= const. However, in some cases, the processes of cultivation of microorganisms and fermentation require control of the content of a certain level of oxygen in the feedstock, depending on other parameters characterizing the processes occurring in the feedstock under the influence of aeration. Often this parameter is the temperature of the processed material. In this case, the aeration process is described in more complicated functional dependence, namely the dependence of the oxygen content in the feedstock from its temperature: O2= f(to) by means of which, through the circuitry in the process control system aeration under cultivation of microorganisms and fermentation with their participation, you can extend the functionality of the systems of control of technological processes of production of composts in agriculture.

The claimed invention is directed to solving the problem of extending the functionality of the process control system aeration during the fermentation of organic materials.

The problem is solved by introducing a system of automatic process control aeration during the fermentation of organic material containing fermenter with the feedstock, the blower and the control loop air supply for aeration, including sensor oxygen content in the feedstock, the airflow switch and the actuator, a temperature sensor and functional Converter that implements the dependence of the oxygen content in the raw materials from its temperature, and the functional input of the inverter connected to the temperature sensor, and its output connected to the input of the regulator air flow.

Introduction in the claimed control system temperature sensor feedstock allows you to control the processes of aerobic cultivation and fermentation of one parameter - the temperature of the raw material, and using the function of the Converter is to realize the dependence of the oxygen content in the raw materials from its current temperature. Thus, in the proposed system of control is it optimal for the current temperature that will allow: 1) along with the use of control systems to solve specific problems in the field of Microbiology to control the technological processes of production of composts in agriculture by aeration of organic raw materials; 2) to expand the range of the final product depending on the source of raw materials and the implementation of system-specific dependencies: O2= f(to), where O2- the calculated amount of oxygen in the feedstock required to implement a given process; to- the temperature of the processed substrate in the fermenter; 3) greater flexibility to manage the process of fermentation of organic materials, for example to speed up the process of composting; 4) to improve the quality of the final product, because the management of the fermentation process of organic raw materials (composting) is carried out by the two parameters related to a specific functional dependence; 5) to reduce energy consumption by controlling the fermentation process of organic raw materials according to a certain program, best for a particular fermentation process.

The invention is illustrated in the drawing. The drawing shows a block diagram sitestogo control aeration during the fermentation of organic raw materials contains the fermenter with 1 raw, the oxygen sensor 2 in aerated raw materials, the temperature sensor 3, a functional Converter 4, the airflow switch 5, the actuator 6 and the blower 7.

The automatic control system operates as follows. In the fermenter 1 load of processed organic raw materials and provide air to the aeration from the air blower 7. The flow rate of air supplied to the aeration of the raw materials is regulated by the actuator 6, which is controlled by a flow regulator air 5. The airflow switch 5 is the comparison of the signal measured oxygen content in the raw material fed to the input of the regulator air flow 5 from the output of the sensor 2 oxygen content in the raw material, and the signal of the specified oxygen content in the raw materials supplied to another input of the airflow switch 5 with the output function of the Converter 4, to the input of which is connected to the temperature sensor 3. During the fermentation process the signal from the temperature sensor 3 is fed to the input of the functional Converter 4, which implements the required functional relationship between the temperature of the source of organic raw materials and the optimal oxygen concentration in the raw material for this temperature regulation aeration of raw materials processed by the content of oxygen in it, optimal for the current temperature.

Automatic process control aeration during the fermentation of organic material containing fermenter with the feedstock, the blower and the control loop air supply for aeration, including the oxygen sensor in raw materials, the airflow switch and the actuator, characterized in that it further equipped with a temperature sensor and a functional Converter that implements the dependence of the oxygen content in the feedstock from its temperature, and the functional input of the inverter connected to the temperature sensor, and its output connected to the input of the regulator air flow.

 

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