CN216998436U - Energy-saving heat exchange system for dry yeast production - Google Patents
Energy-saving heat exchange system for dry yeast production Download PDFInfo
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- CN216998436U CN216998436U CN202123438003.8U CN202123438003U CN216998436U CN 216998436 U CN216998436 U CN 216998436U CN 202123438003 U CN202123438003 U CN 202123438003U CN 216998436 U CN216998436 U CN 216998436U
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Abstract
The utility model discloses an energy-saving heat exchange system for dry yeast production, which comprises a cooling plate type heat exchanger, wherein a yeast milk outlet of the cooling plate type heat exchanger is connected with a yeast milk inlet of a sterilizing plate type heat exchanger, the yeast milk outlet of the sterilizing plate type heat exchanger is connected with a medium inlet of the cooling plate type heat exchanger through a communicating pipe, and the medium outlet of the cooling plate type heat exchanger is connected with a liquid outlet pipe; a medium inlet and a medium outlet of the sterilizing plate type heat exchanger are connected with a circulating hot water system in series, and a water pump is communicated with a pipeline of the circulating hot water system; the communicating pipe is communicated with the liquid outlet pipe through a bypass pipe, and the bypass pipe is provided with an electromagnetic regulating valve, and has the advantages that: because the yeast milk is preheated before temperature rise and sterilization, heat exchange heat energy is reduced, the time for providing heat energy is shortened, secondly, the yeast milk at 4 ℃ replaces a cold source, the yeast milk at 4 ℃ is effectively preheated, and the condition that energy is wasted in heat energy during heat exchange is avoided.
Description
The technical field is as follows:
the utility model relates to the field of dry yeast production processes, in particular to an energy-saving heat exchange system for dry yeast production.
The background art comprises the following steps:
the dry yeast extract is a product obtained by taking food yeast as a main raw material and carrying out enzymolysis and autolysis (separation and extraction can be carried out again) under the combined action of enzyme of the yeast or added food-grade enzyme, and is rich in soluble components in yeast cells such as amino acid, peptide, polypeptide and the like.
When the extract is produced, the yeast milk at about 4 ℃ needs to be heated and sterilized, the sterilization temperature reaches 70 ℃, then the yeast milk is cooled to the autolysis temperature (about 55 ℃), during the period, the yeast milk is heated to 70 ℃ from 4 ℃ for sterilization, a large amount of heat sources need to be supplied to meet the requirement, the required heat energy is large, the time is long, a large amount of cold sources are supplied to cool the yeast milk from 70 ℃ to about 55 ℃, and the heat energy during heat exchange has the condition of energy waste.
The utility model has the following contents:
the utility model aims to provide an energy-saving heat exchange system for dry yeast production.
The utility model is implemented by the following technical scheme:
an energy-saving heat exchange system for dry yeast production comprises a cooling plate type heat exchanger, a sterilizing plate type heat exchanger, a first temperature sensor, a second temperature sensor, a third temperature sensor and a DCS controller, wherein a yeast milk outlet of the cooling plate type heat exchanger is connected with a yeast milk inlet of the sterilizing plate type heat exchanger, a yeast milk outlet of the sterilizing plate type heat exchanger is connected with a medium inlet of the cooling plate type heat exchanger through a communicating pipe, and a medium outlet of the cooling plate type heat exchanger is connected with a liquid outlet pipe;
a medium inlet and a medium outlet of the sterilizing plate type heat exchanger are connected with a circulating hot water system in series, and a water pump is communicated with a pipeline of the circulating hot water system;
a bypass pipe is communicated between the communicating pipe and the liquid outlet pipe, and an electromagnetic regulating valve is arranged on the bypass pipe;
first temperature sensor sets up cooling plate heat exchanger's yeast milk exit, second temperature sensor sets up sterilization plate heat exchanger's yeast milk exit, third temperature sensor sets up on the drain pipe, first temperature sensor second temperature sensor third temperature sensor's signal output part respectively with the signal input part of DCS controller connects, the DCS controller respectively with the water pump electromagnetic control valve electricity is connected.
Preferably, the device further comprises a flow rate sensor, wherein the flow rate sensor is arranged at a medium inlet of the sterilizing plate heat exchanger, and a signal output end of the flow rate sensor is connected with a signal input end of the DCS controller.
The utility model has the advantages that: because the yeast milk is preheated before temperature rise and sterilization, and the heat medium does not need to provide more heat energy for heat exchange so as to reach the temperature for satisfying sterilization, therefore, the heat exchange heat energy is reduced, and the time for providing the heat energy is shortened.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a control block diagram of the present invention.
In the figure: the device comprises a cooling plate type heat exchanger 1, a sterilizing plate type heat exchanger 2, a first temperature sensor 3, a second temperature sensor 4, a third temperature sensor 5, a DCS controller 6, a communicating pipe 7, a liquid outlet pipe 8, a circulating hot water system 9, a water pump 10, a bypass pipe 11, an electromagnetic regulating valve 12 and a flow velocity sensor 13.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, an energy-saving heat exchange system for dry yeast production comprises a cooling plate type heat exchanger 1, a sterilizing plate type heat exchanger 2, a first temperature sensor 3, a second temperature sensor 4, a third temperature sensor 5 and a DCS controller 6;
a yeast milk outlet of the cooling plate type heat exchanger 1 is connected with a yeast milk inlet of the sterilizing plate type heat exchanger 2, a yeast milk outlet of the sterilizing plate type heat exchanger 2 is connected with a medium inlet of the cooling plate type heat exchanger 1 through a communicating pipe 7, and a medium outlet of the cooling plate type heat exchanger 1 is connected with a liquid outlet pipe 8;
a medium inlet and a medium outlet of the sterilizing plate type heat exchanger 2 are connected with a circulating hot water system 9 in series, and a water pump 10 is communicated with a pipeline of the circulating hot water system 9;
a bypass pipe 11 is communicated between the communicating pipe 7 and the liquid outlet pipe 8, and an electromagnetic regulating valve 12 is arranged on the bypass pipe 11;
The device further comprises a flow velocity sensor 13, wherein the flow velocity sensor 13 is arranged at a medium inlet of the sterilizing plate type heat exchanger 2, and a signal output end of the flow velocity sensor 13 is connected with a signal input end of the DCS controller 6.
The working principle is as follows: when the system is just started and yeast milk at 4 ℃ is introduced, the yeast milk at 4 ℃ flows through the cooling plate type heat exchanger 1 and enters the sterilizing plate type heat exchanger 2, at the moment, hot water is supplied into the sterilizing plate type heat exchanger 2 by the circulating hot water system 9 to serve as a heat medium, the temperature of the yeast milk is raised to 70 ℃ for heat exchange, the yeast milk is sterilized at high temperature, the hot water temperature at the moment needs to be higher than 70 ℃ and can play a role in heat exchange and sterilization, then the yeast milk at 70 ℃ flows through two paths, one path flows through a medium channel of the cooling plate type heat exchanger 1 through a communicating pipe 7 to exchange heat with the yeast milk at about 4 ℃ and is cooled, the other path keeps high temperature through a bypass pipe 11, finally, the yeast milk is collected in a liquid outlet pipe 8 and mixed at the temperature, and the yeast milk flowing out of the liquid outlet pipe 8 is 55 ℃ and enters the next process.
The third temperature sensor 5 monitors the temperature of the yeast milk flowing out of the liquid outlet pipe 8, when the temperature is higher than 55 ℃, the third temperature sensor 5 feeds back a signal to the DCS controller 6, the DCS controller 6 sends an execution instruction to control the opening of the electromagnetic regulating valve 12 to be small, the yeast milk at 70 ℃ is reduced to the liquid outlet pipe 8, the yeast milk subjected to heat exchange and temperature reduction is increased to the liquid outlet pipe 8, and therefore the temperature is controlled to be reduced to 55 ℃;
when the temperature is lower than 55 ℃, the third temperature sensor 5 feeds back a signal to the DCS controller 6, the DCS controller 6 sends an execution instruction to control the opening of the electromagnetic regulating valve 12 to be large, the yeast milk with the temperature of 70 ℃ is added to the liquid outlet pipe 8, and the yeast milk with heat exchange and temperature reduction is reduced to the liquid outlet pipe 8, so that the temperature is controlled to rise to 55 ℃, the yeast milk flowing out of the liquid outlet pipe 8 is automatically maintained to be 55 ℃, and the requirements are met.
After the system is continuously used, yeast milk at about 4 ℃ is preheated and heated, then enters the sterilization plate type heat exchanger 2 and is subjected to heat exchange by hot water, the yeast milk is heated and subjected to heat exchange to 70 ℃ to play a role in high-temperature sterilization, wherein the yeast milk entering the sterilization plate type heat exchanger 2 is higher than 4 ℃, the heat exchange temperature of the yeast milk coming out of the sterilization plate type heat exchanger 2 needs to be controlled, the temperature of the yeast milk coming out of the cooling plate type heat exchanger 1 is monitored by the first temperature sensor 3 to be higher than 4 ℃, the temperature in actual production is taken as a basis, a signal is fed back to the DCS controller 6, and the DCS controller 6 sends an execution instruction to control the water pump 10 to start;
the second temperature sensor 4 monitors the temperature of the yeast milk from the sterilization plate type heat exchanger 2, a signal is fed back to the DCS controller 6, the DCS controller 6 sends an execution instruction to control the pumping speed of the water pump 10, the temperature of the yeast milk is maintained at 70 ℃, when the temperature of the yeast milk is higher than 70 ℃, the temperature of the preheated yeast milk is higher, the water pump 10 is controlled to pump hot water quickly, the residence time is short, the heat exchange amount is small, the heat exchange temperature of the preheated yeast milk is low, and the temperature of the yeast milk is reduced to 70 ℃;
when the yeast milk is lower than 70 ℃, the temperature of the preheated yeast milk is lower, the water pump 10 is controlled to pump hot water at a slow speed, the retention time is long, the heat exchange quantity is large, the heat exchange temperature for the preheated yeast milk is high, the temperature of the yeast milk is raised to 70 ℃, in the process, the yeast milk entering the sterilizing plate type heat exchanger 2 is higher than 4 ℃, the heat energy of the hot water for heat exchange with the yeast milk can be reduced, and the use requirement of temperature raising and sterilization of the yeast milk is met when the hot water does not maintain the temperature of 70 ℃ for a long time.
Because the yeast milk is preheated before temperature rise sterilization, the heat medium does not need to provide more heat energy for heat exchange so as to reach the temperature meeting the sterilization, therefore, the heat exchange heat energy is reduced, the time for providing the heat energy is shortened, secondly, the yeast milk at 4 ℃ is cooled to 55 ℃ from 70 ℃ for heat exchange, a cold source is replaced, the requirement of cooling is met, the heat energy of the sterilized yeast milk is effectively utilized for preheating, and the condition that the energy is wasted in the heat energy during heat exchange is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. An energy-saving heat exchange system for dry yeast production is characterized by comprising a cooling plate type heat exchanger, a sterilizing plate type heat exchanger, a first temperature sensor, a second temperature sensor, a third temperature sensor and a DCS controller, wherein a yeast milk outlet of the cooling plate type heat exchanger is connected with a yeast milk inlet of the sterilizing plate type heat exchanger, a yeast milk outlet of the sterilizing plate type heat exchanger is connected with a medium inlet of the cooling plate type heat exchanger through a communicating pipe, and a medium outlet of the cooling plate type heat exchanger is connected with a liquid outlet pipe;
a medium inlet and a medium outlet of the sterilizing plate type heat exchanger are connected with a circulating hot water system in series, and a water pump is communicated with a pipeline of the circulating hot water system;
a bypass pipe is arranged between the communicating pipe and the liquid outlet pipe in a communicating way, and an electromagnetic regulating valve is arranged on the bypass pipe;
first temperature sensor sets up cooling plate heat exchanger's yeast milk exit, second temperature sensor sets up sterilization plate heat exchanger's yeast milk exit, third temperature sensor sets up on the drain pipe, first temperature sensor second temperature sensor third temperature sensor's signal output part respectively with the signal input part of DCS controller connects, the DCS controller respectively with the water pump electromagnetic control valve electricity is connected.
2. The energy-saving heat exchange system for the production of the dry yeast as claimed in claim 1, wherein: the sterilization plate type heat exchanger further comprises a flow velocity sensor, the flow velocity sensor is arranged at a medium inlet of the sterilization plate type heat exchanger, and a signal output end of the flow velocity sensor is connected with a signal input end of the DCS controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123438003.8U CN216998436U (en) | 2021-12-30 | 2021-12-30 | Energy-saving heat exchange system for dry yeast production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123438003.8U CN216998436U (en) | 2021-12-30 | 2021-12-30 | Energy-saving heat exchange system for dry yeast production |
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| Publication Number | Publication Date |
|---|---|
| CN216998436U true CN216998436U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123438003.8U Active CN216998436U (en) | 2021-12-30 | 2021-12-30 | Energy-saving heat exchange system for dry yeast production |
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| CN (1) | CN216998436U (en) |
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2021
- 2021-12-30 CN CN202123438003.8U patent/CN216998436U/en active Active
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