SU1036740A1 - Method for sterilizing production fluids - Google Patents

Abstract

METHOD FOR STERILIZING TECHNOLOGICAL MEDIA by processing them with paired video pulses with a frequency for the first pulse of 300-800 MHz and a duration of 0.5-0.1 MCS and a frequency for the second pulse of 1-30 MHz, a duration of 1.0-0.5 μs and an interval between 5-20 µs, characterized in that, in order to expand the range of sterilized media and reduce energy consumption, the media are processed simultaneously with hot steam under a pressure of 10-30 MPa using paired video pulses of 0,050,66 MW.

Description

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4 The invention relates to techno chemical and biochemical productions, is also intended for sterilization of technological media and can be used in the chemical, microbiological, food, radio electronic industries. A large number of methods are used to sterilize technological environments, including high-frequency sterilization processes of hard and solid technological media. However, known methods are characterized by a lengthy process and considerable energy, unwanted destruction of composite components, and difficulty in designing a working chamber (resonators). The closest to the invention is the method of sterilizing technological media by treating them with paired video pulses with a frequency for the first pulse of 300-800 MHz and a duration of 0.5-0.1 μs and a frequency for the second pulse of 1 30 MHz, duration 1.0-0 , 5 μs and the gap between them .5 20 μs 2. However, the known method also has insufficient sterilization efficiency in some cases, since complete sterilization is achieved only in 50-120 seconds, the range of sterilized media is not wide enough, as ka sterilization is described only in relation to pathogenic microorganisms and containing harmful chemical compounds, such as cyanide, in addition, high power pulses (up to 0.3 MW) causes significant energy consumption. The aim of the invention is to expand the range of sterilized media and reduce energy consumption. The goal is achieved by the method of sterilizing technological media by treating them with paired video pulses with a frequency for the first pulse of 300-800 MHz and a duration of 0.5-0.1 µs and a frequency of 1 second of a second pulse of 1-30 MHz 0–0.5 µs and a gap between them of 5–20 µs, media processing is simultaneously carried out with hot steam at a pressure of 10–30 MPa with a power of paired video pulses of 0.05–0.06 MW. A proposal to use pressures in the working cavity containing environment, due to the autoclavio effect Expand the range of sterilized media, in particular, sterilize cyanogenic aqueous media, reduce the processing time of media in Zraz and reduce energy consumption by reducing the value of power CB4 (to 0.05-0.06 MW) by 20-30%. The choice of pressure in the range of 10 30 MPa is based on the fact that the pressure below 10 MPa is ineffective, and above 30 MPa the pressure is unnecessary and requires additional costs for implementation. The video pulse power interval is chosen from those considerations that smaller motions do not give the desired sterilization effect, and higher powers are unnecessary and require only additional energy consumption. Example 1 A process medium containing a set of pathogenic microorganisms in an amount of 1 dm and ions of 1 mg / l was tested. The medium was treated with hot steam under a pressure of 10 MPa with simultaneous superposition of paired video pulses with a power of MW, the duration of the treatment was 1 min. The results of the medium treatment by the proposed method compared to the known are given in Table. 1. Table 2. Example 2. The process medium was tested, containing a set of pathogenic microorganisms in quantity of 1 CN ions, a pressure of 30 MPa with simultaneous imposition of paired video pulses with a power O, 06 MW. Processing time 1 min. The results of the processing environment of the proposed method in comparison with the known are given in table. 2

Table

Examples 3–7 are given below that show that the pulses are the most effective. 300-800 MHz and 1-30 MHz in the pressure range 10-30 MPa. The vapor pressure of 5 MPa sterilizes worse (Example 4), and the vapor pressure of 40 MPa sterilizes the same as the pressure frequency of the first pulse, MHz 100 200 300 400

Frequency of the second pulse, MHz 0.1 0.5

1Result

103

ten

Cyanide ion concentration

0.1 mg / l0.3

Example 4. The results of sterilization of technological media with video pulses of different frequency filling with a duration of 0.5 µs (overvoltage Frequency of the first pulse, 100 200 300

Frequency of the second pulse, MHz

0.1 0.5

30 MPa but more energy-intensive this option.

Example 8 confirms the advisability of “choosing the durations of the 1st pulse 0.5–0.1 MCS and the 2nd pulse 1.0–0.5 μs, as well as the interval of the pulse masses 5–20 μs. These modes provide the most effective sterilization. It is advisable to choose the pulse power in

0 within 0.05-0.06 MW. More powerful pulses, while providing the same efficiency, but require a sharp increase in energy consumption (2 times or more)

five

Thus, by other parameters in the proposed method, it is impossible or not economical to achieve the desired result on the sterilization of process media.

Example 3. The results of the sterilization of technological media with video pulses of different frequency filling with a duration of 0.5 μs (first) and 1.0 μs (second), with an interval between them of 5 μs and a power of 0.05 MW with simultaneous hot steam under pressure of 10 MPa.

Impact

I. 10/0 20 25

100

30 50

ten

ten

0 00 0 0.6 0.8

whom) and 1.0 μs (the second) with an interval between them of 5 μs and a power of 0.05 MW with simultaneous action of hot steam under a pressure of 20 MPa.

10 20 25 30 50 100 500 BOO 800 900 1000 all. 400 500 600 800 900 1000 5103 Rezul Pathogenic content 103 10 O Concentration of cyanide ions, mg / l 0.3 0.08 0 Example 5. The results of the ancientisation of technological media with video pulses of different frequency filling with a duration of 0.5 µs Depends the Frequency of the first pulse, MHz 100 200 300 Frequency of the second pulse, MHz 0.1 0.5 1 Rezul Content of pathogenic microflora, cells / ml S 5 O Concentration of cyanide ions, mg / l 0.25 0.05 0 Example 6. Sterilization of technological media with video pulses of different frequency filling with a duration of 0.5 µs (per-Vozde Frequency of the first pulse, MHz100 200 300 Frequency of the second pulse, MHz 0.1 0.5 1 Resul Content of pathogenic micro flora, cells / ml 10 10 10 Concentration of cyanide ions, mg / l 1.0 0.5 0.2 P R m e R 7 The results of sterilization of technological media with video pulses of different frequency filling with a duration of 0.5 µs 6740 tat 0.00 О 10. 10 "п п п п п л О О О 0.5 0.8) and 1.0 µs Svtrogo} “Eerie between them 5 μs and a power of 0.05 MW with simultaneous action of 15 hot steam under a pressure of 30 MPa. 400 500 600 800 900 1000 10 20 25 30 50 100 tat O 00 O 5 10 0 O O O 0.2 0.6) and 1.0 µs (the second) with an interval between them of 5 µs and a power of 0.05 MW with a simultaneous action of 0 hot steam under a pressure of 5 MPa. 00 500 600 800 900 1000 10 20 25 30 50 100 ∆t 5 2 2 5 10 10 0.1 0.2 0.8 1.0 1.0 (first) and 1.0 μs (second) with an interval between them 5 μs and a power of 0.05 MW with the simultaneous action of the vapor of 5 MP under pressure of 40 MPa. 710367 V about 3 d her with Frequency of the first impulse, MHz 100 200 300 400 Frequency of the second impulse, MHz 0.1 0.5110 RESUL Pathogen content. microflora, cells / ml 10 5 O O Concentration of cyanide ions, mg / l 0.3 0.1 O O example 8. Results of sterilization of technological media with 500 MHz and 20 MHz video pulses at different durations and Exposure Duration of the first pulse, MKS 1 0.8 0.5 Duration: second pulse, MKS 5.0 2.0 1.0 Duration of the gap between the first and second pulses 0.5 1 5 Resul Content of pathogenic microorganisms, cells / ml 10 10 0 Concentration of cyanide ions , mg / l 0.8 0.8 0 Example 9. Results of st. technological impregnations with video pulses of 500 MHz and 20 MHz i with a duration of the first 0.3 µs and a second 0.8 µs, the interval of the inter-impulse power, .. MW0,0010.05 concentration of patho-radiation of gene microorganisms, cells / ml 10 O of cyanide ion , mg / l0.4O Energy consumption, kW / h0,30,5 408 t in and e 500 600 800 900 1voo. . 2025 3050100 tat l O O O 5 5. О О О 0.2 0.2 0.5, with a capacity of 0.05 MW, with simultaneous treatment with hot steam under a pressure of 20 MPa. value 0.3 0.1 0.05 0.001 0.8 0.5 0.3 0.1. 10 20 -30 50 tat 00 10 5-1000 0.1. 0.6 dus beats 10 µs with simultaneous action of a hot parameter under a pressure of 20 MPa, the pulses are taken of different power. .-. 0,060,10,51 ultat OOOO OOOO 0,5102650

9 103674010

Thus, due to the use of cyanide ions as well. This disclosure of the proposed method of sterilization extends the range of application of this process medium to the supply, accelerates the sterilization process,

fast and efficient, their energy consumption is reduced, the caMtJM post-processing, reduced to zero, increases productivity

as a pathogenic microorganism of labor and get an economic effect.

Claims (1)

METHOD FOR STERILIZING TECHNOLOGICAL MEDIA by processing them with paired video pulses with a frequency for the first pulse of 300-800 MHz and a duration of 0.5-0.1 μs and a frequency for the second pulse of 1-30 MHz, a duration of 1.0-0.5 μs and the gap between they are 5-20 μs, characterized in that, in order to expand the range of sterilized media and reduce energy consumption, the media are treated simultaneously with hot steam under a pressure of 10-30 MPa using paired video pulses of 0.050.06 MW.