CN215893351U - Raw water heating system - Google Patents
Raw water heating system Download PDFInfo
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- CN215893351U CN215893351U CN202122239504.7U CN202122239504U CN215893351U CN 215893351 U CN215893351 U CN 215893351U CN 202122239504 U CN202122239504 U CN 202122239504U CN 215893351 U CN215893351 U CN 215893351U
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Abstract
The utility model discloses a raw water heating system.A process condensate pipe is respectively connected with an outlet of a process condensate collecting tank and a heat source inlet of a process condensate heat exchanger at two ends; the process condensate main pipe is connected with a heat source inlet of the raw water plate type heat exchanger through a process condensate waste heat utilization inlet pipe; a process condensate temperature sensor is arranged on a main process condensate pipe between a process condensate collecting tank and a process condensate waste heat utilization inlet pipe, a process condensate inlet valve is arranged on the process condensate waste heat utilization inlet pipe, and a process condensate outlet valve is arranged on a heating condensate pipe; a steam inlet valve is arranged on the heating steam inlet pipe. The process condensate temperature in the process condensate main pipe is detected through the process condensate temperature sensor, when the process condensate temperature is higher than a certain value, the controller controls the steam inlet valve and the steam outlet valve to be closed, the process condensate inlet valve and the process condensate outlet valve are opened, the raw water is heated by utilizing the heat of the process condensate, the use amount of the steam is reduced, and the energy-saving effect is achieved.
Description
The technical field is as follows:
the utility model relates to the field of urea production, in particular to a raw water heating system.
Background art:
in urea production, most of the heating heat sources used in production facilities are derived from boiler steam, and in order to ensure that the production system does not suffer from scale and normal operation, it is necessary to desalt raw production water. However, due to the limitation of the desalination process, the temperature needs to be raised before raw water enters a desalination system to ensure the desalination effect, and the raw water is heated by using steam to exchange heat through a plate heat exchanger, so that about 14.5 tons of steam are consumed per hour, and the energy consumption is extremely high; meanwhile, the temperature of the production process condensate is high, and the heat exchanger for cooling the process condensate is low in heat exchange efficiency, so that energy waste is caused.
The utility model has the following contents:
the utility model aims to provide a raw water heating system capable of saving energy consumption.
The utility model is implemented by the following technical scheme:
a raw water heating system comprises a raw water plate heat exchanger, wherein a heat source inlet of the raw water plate heat exchanger is connected with a steam outlet of a steam system through a heating steam inlet pipe, a heat source outlet of the raw water plate heat exchanger is connected with a heat source inlet of a process condensate heat exchanger through a heating condensate pipe, a cold source inlet of the raw water plate heat exchanger is connected with a raw water storage tank, and a cold source outlet of the raw water plate heat exchanger is connected with a desalted water system; the system also comprises a main process condensate pipe and a process condensate waste heat utilization inlet pipe; the two ends of the process condensate pipe are respectively connected with the outlet of the process condensate collecting tank and the heat source inlet of the process condensate heat exchanger; the process condensate main pipe is connected with a heat source inlet of the raw water plate type heat exchanger through the process condensate waste heat utilization inlet pipe;
a process condensate temperature sensor is arranged on the main process condensate pipe between the process condensate collecting tank and the process condensate waste heat utilization inlet pipe, a process condensate inlet valve is arranged on the process condensate waste heat utilization inlet pipe, and a process condensate outlet valve is arranged on the heating condensate pipe; a steam inlet valve is arranged on the heating steam inlet pipe;
a raw water temperature sensor is arranged at a cold source outlet of the raw water plate type heat exchanger, and an adjusting valve is arranged on the main process condensate pipe between the process condensate waste heat utilization inlet pipe and the heating condensate pipe;
the process condensate temperature sensor and the raw water temperature sensor are electrically connected with the signal input end of the controller, and the process condensate inlet valve, the process condensate outlet valve and the steam inlet valve are all electrically connected with the signal output end of the controller.
Preferably, a heating steam outlet pipe is further connected to a heat source outlet of the raw water plate heat exchanger, and a steam outlet valve is mounted on the heating steam outlet pipe; the heat source outlet of the raw water plate type heat exchanger is provided with a heat source outlet temperature sensor, the heat source outlet temperature sensor is electrically connected with the signal input end of the controller, and the steam outlet valve is electrically connected with the signal output end of the controller.
The utility model has the advantages that: the process condensate temperature in the process condensate main pipe is detected through the process condensate temperature sensor, when the process condensate temperature is higher than a certain value, a signal is sent to the controller, the controller controls the steam inlet valve and the steam outlet valve to be closed, the process condensate inlet valve and the process condensate outlet valve are opened, the raw water is heated by utilizing the heat of the process condensate, the use amount of the steam is reduced, and the energy-saving effect is achieved.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the control structure of the present invention.
In the figure: the system comprises a raw water plate type heat exchanger 1, a heating steam inlet pipe 2, a heating condensate pipe 3, a process condensate main pipe 4, a process condensate waste heat utilization inlet pipe 5, a process condensate temperature sensor 6, a process condensate inlet valve 7, a process condensate outlet valve 8, a steam inlet valve 9, a raw water temperature sensor 10, an adjusting valve 11, a controller 12, a heating steam outlet pipe 13, a steam outlet valve 14 and a heat source outlet temperature sensor 15.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, a raw water heating system comprises a raw water plate heat exchanger 1, wherein a heat source inlet of the raw water plate heat exchanger 1 is connected with a steam outlet of a steam system through a heating steam inlet pipe 2, a heat source outlet of the raw water plate heat exchanger 1 is connected with a heat source inlet of a process condensate heat exchanger through a heating condensate pipe 3, a cold source inlet of the raw water plate heat exchanger 1 is connected with a raw water storage tank, and a cold source outlet of the raw water plate heat exchanger 1 is connected with a desalted water system; the system also comprises a main process condensate pipe 4 and a waste heat utilization inlet pipe 5; two ends of the process condensate pipe are respectively connected with an outlet of the process condensate collecting tank and a heat source inlet of the process condensate heat exchanger; the process condensate main pipe 4 is connected with a heat source inlet of the raw water plate type heat exchanger 1 through a process condensate waste heat utilization inlet pipe 5;
a process condensate temperature sensor 6 is arranged on a process condensate main pipe 4 between a process condensate collecting tank and a process condensate waste heat utilization inlet pipe 5, a process condensate inlet valve 7 is arranged on the process condensate waste heat utilization inlet pipe 5, and a process condensate outlet valve 8 is arranged on a heating condensate pipe 3; a steam inlet valve 9 is arranged on the heating steam inlet pipe 2;
a raw water temperature sensor 10 is arranged at a cold source outlet of the raw water plate type heat exchanger 1, and an adjusting valve 11 is arranged on a main process condensate pipe 4 between a process condensate waste heat utilization inlet pipe 5 and a heating condensate pipe 3;
the process condensate temperature sensor 6 and the raw water temperature sensor 10 are electrically connected with the signal input end of the controller 12, and the process condensate inlet valve 7, the process condensate outlet valve 8 and the steam inlet valve 9 are electrically connected with the signal output end of the controller 12;
a heating steam outlet pipe 13 is also connected to the heat source outlet of the raw water plate heat exchanger 1, and a steam outlet valve 14 is installed on the heating steam outlet pipe 13; a heat source outlet temperature sensor 15 is installed at a heat source outlet of the raw water plate heat exchanger 1, the heat source outlet temperature sensor 15 is electrically connected with a signal input end of the controller 12, and the steam outlet valve 14 is electrically connected with a signal output end of the controller 12;
in normal use, the steam inlet valve 9 and the process condensate outlet valve 8 are opened, the process condensate inlet valve 7 and the steam outlet valve 14 are closed, the regulating valve 11 is in a fully opened state, steam in a steam system is used as a heat source and enters the raw water plate heat exchanger 1 through the heating steam inlet pipe 2 to heat and send raw water from the raw water storage tank, and cooled steam condensate is discharged into the process condensate main pipe 4 from the heating condensate pipe 3;
if the heat source outlet temperature sensor 15 detects that the outlet temperature of the steam condensate at the heat source outlet of the raw water plate heat exchanger 1 is too high, a signal is sent to the controller 12, the controller 12 controls the process condensate outlet valve 8 to be closed, the steam outlet valve 14 is opened, and the steam condensate is sent to the heating condensate collecting tank through the heating steam outlet pipe 13, so that the influence on the temperature of the process condensate in the process condensate main pipe 4 due to height is avoided.
When the process condensate temperature sensor 6 detects that the process condensate temperature in the process condensate main pipe 4 is higher than a certain value, a signal is sent to the controller 12, the controller 12 controls the steam inlet valve 9 and the steam outlet valve 14 to be closed, the process condensate inlet valve 7 and the process condensate outlet valve 8 to be opened, and the process condensate is used for heating the raw water;
the raw water temperature sensor 10 is used for detecting the temperature of raw water at a cold source outlet of the raw water plate heat exchanger 1 and sending a detection result to the controller 12, the controller 12 adjusts the opening degree of the regulating valve 11 according to the raw water temperature, and if the temperature of the raw water is low, the opening degree of the regulating valve 11 is reduced, so that more process condensate passes through the raw water plate heat exchanger 1, and the raw water heating temperature is ensured.
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. A raw water heating system comprises a raw water plate heat exchanger, wherein a heat source inlet of the raw water plate heat exchanger is connected with a steam outlet of a steam system through a heating steam inlet pipe, a heat source outlet of the raw water plate heat exchanger is connected with a heat source inlet of a process condensate heat exchanger through a heating condensate pipe, a cold source inlet of the raw water plate heat exchanger is connected with a raw water storage tank, and a cold source outlet of the raw water plate heat exchanger is connected with a desalted water system; the two ends of the process condensate pipe are respectively connected with the outlet of the process condensate collecting tank and the heat source inlet of the process condensate heat exchanger; the process condensate main pipe is connected with a heat source inlet of the raw water plate type heat exchanger through the process condensate waste heat utilization inlet pipe;
a process condensate temperature sensor is arranged on the main process condensate pipe between the process condensate collecting tank and the process condensate waste heat utilization inlet pipe, a process condensate inlet valve is arranged on the process condensate waste heat utilization inlet pipe, and a process condensate outlet valve is arranged on the heating condensate pipe; a steam inlet valve is arranged on the heating steam inlet pipe;
a raw water temperature sensor is arranged at a cold source outlet of the raw water plate type heat exchanger, and an adjusting valve is arranged on the main process condensate pipe between the process condensate waste heat utilization inlet pipe and the heating condensate pipe;
the process condensate temperature sensor and the raw water temperature sensor are electrically connected with the signal input end of the controller, and the process condensate inlet valve, the process condensate outlet valve and the steam inlet valve are all electrically connected with the signal output end of the controller.
2. The raw water heating system according to claim 1, wherein a heating steam outlet pipe is further connected to a heat source outlet of the raw water plate heat exchanger, and a steam outlet valve is mounted on the heating steam outlet pipe; the heat source outlet of the raw water plate type heat exchanger is provided with a heat source outlet temperature sensor, the heat source outlet temperature sensor is electrically connected with the signal input end of the controller, and the steam outlet valve is electrically connected with the signal output end of the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122239504.7U CN215893351U (en) | 2021-09-15 | 2021-09-15 | Raw water heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122239504.7U CN215893351U (en) | 2021-09-15 | 2021-09-15 | Raw water heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215893351U true CN215893351U (en) | 2022-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122239504.7U Active CN215893351U (en) | 2021-09-15 | 2021-09-15 | Raw water heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215893351U (en) |
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2021
- 2021-09-15 CN CN202122239504.7U patent/CN215893351U/en active Active
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