CN210072430U - Coking gas desulfurization liquid temperature control system - Google Patents
Coking gas desulfurization liquid temperature control system Download PDFInfo
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- CN210072430U CN210072430U CN201921185114.2U CN201921185114U CN210072430U CN 210072430 U CN210072430 U CN 210072430U CN 201921185114 U CN201921185114 U CN 201921185114U CN 210072430 U CN210072430 U CN 210072430U
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Abstract
The utility model provides a coking gas desulfurization liquid temperature control system belongs to coking gas treatment technical field, including the heat exchanger, be arranged in carrying out the heat transfer mechanism of heat transfer, carry out the circulating water mechanism of circulated use and the control mechanism who is arranged in controlling the quality of the medium of heat transfer medium inflow heat exchanger among the heat transfer mechanism to the heat transfer medium of discharge heat exchanger to the heat exchanger, heat transfer mechanism is including supplying vapour unit and water supply unit, and circulating water mechanism includes circulating water pipeline, circulating water pump and air-cooled ware. The utility model provides a coking gas desulfurization liquid temperature control system, controller can control the heat transfer temperature to the doctor solution, make the temperature of doctor solution keep presetting the within range, have the temperature to the doctor solution controllable, are favorable to coking gas desulfurization effect, improve the technological effect of desulfurization efficiency and progress.
Description
Technical Field
The utility model belongs to the technical field of coking gas handles, more specifically say, relate to a coking gas desulfurization liquid temperature control system.
Background
In chemical production, in order to protect the atmospheric environment, the coking gas is required to be desulfurized, the treatment method is to treat the gas in a desulfurizing tower by using a desulfurizing liquid, the desulfurizing liquid flows to the desulfurizing tower through a desulfurizing liquid pipeline, the temperature of the desulfurizing liquid is an important factor influencing the desulfurization efficiency of the coking gas, and the temperature of the desulfurizing liquid for desulfurizing the coking gas is controlled to be between 35 and 40 ℃ so as to obtain good desulfurization efficiency. In the prior art, the temperature of the desulfurization solution is controlled by mostly adopting a heat exchanger, and in winter, the temperature of the desulfurization solution is lower, so that the temperature rising effect of the heat exchanger on the temperature of the desulfurization solution is not obvious, and the desulfurization efficiency is influenced; when summer, the temperature of doctor solution is on the high side, and then the heat exchanger is not obvious to the reduction effect of doctor solution temperature, causes doctor solution viscosity and surface tension to drop, is unfavorable for sulphur foam flotation, directly reduces desulfurization efficiency, and long-time operation system has the risk of blockking up the desulfurizing tower, and the temperature risees simultaneously and easily produces double salt, increases the energy consumption.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coking gas desulfurization liquid temperature control system aims at solving the unstable temperature control to the doctor solution, influences coking gas desulfurization efficiency's technical problem.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a coking gas desulfurization liquid temperature control system, including:
the first inlet end of the heat exchanger is communicated with a desulfurization liquid pipeline, the first outlet end of the heat exchanger is communicated with the desulfurization tower, and the second outlet end of the heat exchanger is communicated with a drainage pool;
the heat exchange mechanism comprises a steam supply unit and a water supply unit; the steam supply unit and the water supply unit are communicated to a second inlet end of the heat exchanger through a steam pipeline and a water supply pipeline respectively;
the circulating water mechanism comprises a circulating water pipeline, a circulating water pump and an air cooler; one end of the circulating water pipeline is communicated with the drainage pool, the other end of the circulating water pipeline is communicated with the water supply unit, the circulating water pump is arranged on the circulating water pipeline and used for pumping circulating water to the water supply unit, and the air cooler is arranged above the water supply unit and used for cooling the circulating water;
the control mechanism comprises a temperature controller arranged on a first outlet end of the heat exchanger and a controller used for receiving a temperature signal collected by the temperature controller; the circulating water pump, the steam supply unit and the water supply unit are all controlled by the controller.
Furthermore, a steam valve is arranged on a connecting pipeline between the steam supply unit and the heat exchanger, a water supply valve is arranged on a connecting pipeline between the water supply unit and the heat exchanger, and the steam valve and the water supply valve are controlled by the controller.
Furthermore, a first desulfurization liquid valve is arranged at a first outlet end of the heat exchanger.
Further, the circulating water pump is an electric control type water pump.
Further, the steam supply unit is a steam generator, and the water supply unit is a water storage tank.
Further, the heat exchanger is a plate heat exchanger.
Furthermore, a second desulfurization liquid valve is arranged on the desulfurization liquid pipeline, and a drainage valve is arranged on a pipeline of which a second outlet end of the heat exchanger is communicated with the drainage pool.
Furthermore, a liquid level meter for monitoring the circulating water liquid level is arranged in the drainage pool.
Furthermore, a main desulfurization liquid pipeline is connected between the desulfurization liquid pipeline and the desulfurization tower, and a main desulfurization liquid valve is arranged on the main desulfurization liquid pipeline.
Further, the controller is a PLC controller.
The utility model provides a coking gas desulfurization liquid temperature control system's beneficial effect lies in: compared with the prior art, the coking gas desulfurization liquid temperature control system of the utility model can flow steam and circulating water into the heat exchanger through arranging the heat exchange mechanism at the second inlet end of the heat exchanger, the steam is used for heating the desulfurization liquid in the heat exchanger, the circulating water is used for cooling the desulfurization liquid, the steam quantity and the circulating water quantity which flow into the heat exchanger in a certain proportion are controlled by the controller, the temperature of the desulfurization liquid flowing into the desulfurization tower of the heat exchanger can be monitored by the temperature controller, the temperature of the desulfurization liquid can be controlled to be kept in a preset range, the automatic temperature control of the desulfurization liquid is realized, in addition, the steam and the circulating water which flow out of the heat exchanger can be used in a reciprocating and circulating way through the arranged circulating water mechanism, the energy is saved, the technical problems that the temperature control of the desulfurization liquid is unstable, the coking desulfurization efficiency is influenced are solved, and the temperature of the, the desulfurization effect of coking gas is favorable, and the desulfurization efficiency and the desulfurization progress are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a coking gas desulfurization liquid temperature control system provided by the embodiment of the utility model.
In the figure: 1. a heat exchanger; 2. a heat exchange mechanism; 21. a steam supply unit; 22. a water supply unit; 23. a steam line; 24. a water supply pipeline; 25. a steam valve; 26. a water supply valve; 3. a water circulating mechanism; 31. a circulating water pipeline; 32. a water circulating pump; 33. an air cooler; 4. a control mechanism; 41. a temperature controller; 42. a controller; 5. a desulfurization solution pipeline; 6. a drainage basin; 61. a drain valve; 7. a first desulfurization solution valve; 8. a second desulfurization solution valve; 9. a main desulfurization liquid pipeline; 91. a main valve for the desulfurization solution; 10. a liquid level meter.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a coking gas desulfurization liquid temperature control system provided by the present invention will now be described. The coking gas desulfurization liquid temperature control system comprises a heat exchanger 1, a heat exchange mechanism 2 used for exchanging heat for the heat exchanger 1, a circulating water mechanism 3 used for circularly using a heat exchange medium discharged out of the heat exchanger 1, and a control mechanism 4 used for controlling the quality of the medium flowing into the heat exchanger 1 from the heat exchange medium in the heat exchange mechanism 2.
The first inlet end of the heat exchanger 1 is communicated with a desulfurization liquid pipeline 5, the first outlet end is communicated with the desulfurization tower, and the second outlet end is communicated with a drainage pool 6.
The heat exchange mechanism 2 comprises a steam supply unit 21 and a water supply unit 22; the steam supply unit 21 and the water supply unit 22 are communicated to a second inlet end of the heat exchanger 1 through a steam pipeline 23 and a water supply pipeline 24, respectively.
The circulating water mechanism 3 comprises a circulating water pipeline 31, a circulating water pump 32 and an air cooler 33; one end of the circulating water pipeline 31 is communicated with the drainage pool 6, the other end is communicated with the water supply unit 22, the circulating water pump 32 is arranged on the circulating water pipeline 31 and used for pumping circulating water to the water supply unit 22, and the air cooler 33 is arranged above the water supply unit 22 and used for cooling the circulating water.
The control mechanism 4 comprises a temperature controller 41 arranged on the first outlet end of the heat exchanger 1 and a controller 42 for receiving a temperature signal collected by the temperature controller 41; the circulating water pump 32, the steam supply unit 21 and the water supply unit 22 are all controlled by the controller 42.
Compared with the prior art, the coking gas desulfurization liquid temperature control system provided by the utility model can flow steam and circulating water into the heat exchanger 1 through arranging the heat exchange mechanism 2 at the second inlet end of the heat exchanger 1, the steam is used for heating the desulfurization liquid in the heat exchanger 1, the circulating water is used for cooling the desulfurization liquid, the steam quantity and the circulating water quantity which flow into the heat exchanger 1 in a certain proportion are controlled through the controller 42, the temperature of the desulfurization liquid flowing into the desulfurization tower of the heat exchanger 1 can be monitored by the temperature controller 41, the temperature of the desulfurization liquid can be controlled to be kept in a preset range, the automatic temperature control of the desulfurization liquid is realized, in addition, the steam and the circulating water flowing out of the heat exchanger 1 can be used in a reciprocating and circulating way through the arranged circulating water mechanism 3, the energy is saved, the technical problems that the temperature control of the desulfurization liquid is unstable and the desulfurization efficiency of coking gas, the desulfurization method has the technical effects of controlling the temperature of the desulfurization solution, being beneficial to the desulfurization effect of coking gas and improving the desulfurization efficiency and progress.
As is well known, four corner holes are arranged on the heat exchanger 1, wherein every two corner holes are respectively communicated with an inlet and an outlet of one medium, the other two corner holes are respectively communicated with another medium, the two media have different heat, and the medium flowing through the corner holes is used for heat exchange (or temperature rise or temperature reduction) of the medium in the heat exchanger 1, so that the purpose of heat exchange can be realized. The four corner holes respectively correspond to a first inlet end, a first outlet end, a second inlet end and a second outlet end of the heat exchanger 1.
In a specific embodiment, the steam supply unit 21 contains steam, the water supply unit 22 contains circulating water, the steam is a medium with a higher temperature, the circulating water is a medium with a lower temperature, and the steam and the circulating water are mixed to exchange heat with the desulfurization solution flowing into the heat exchanger 1, the temperature of the heat exchange can be adjusted by the amount of the steam or the circulating water flowing into the heat exchanger 1, the control terminal is the controller 42, and the controller 42 can control the heat exchange temperature of the heat exchanger 1.
In a specific embodiment, the circulating water mechanism 3 can recycle the steam or the circulating water discharged from the heat exchanger 1 after heat exchange, wherein the water draining pool 6 collects the steam and the circulating water, the medium in the water draining pool 6 is pumped by the circulating water pump 32 and conveyed to the water supply unit 22 through the circulating water pipeline 31, the temperature of the medium in the water draining pool 6 can be 30-50 ℃, the temperature of the medium can still not be reduced after the medium flows to the water supply unit 22, and the medium can be air-cooled by the air cooler 33 and can be rapidly cooled, so that the purpose of cooling is achieved. The air cooler 33 is an electric fan which blows towards the circulating water, and then air-cools the circulating water.
In a specific embodiment, the control mechanism 4 can control the mass of the heat exchange medium flowing into the heat exchanger 1 from the steam supply unit 21 and the water supply unit 22, and can also control the working time and the working frequency of the circulating water pump 32, and the like, through the control of the controller 42, the temperature controller 41 collects the temperature of the desulfurization solution discharged from the heat exchanger 1 and transmits a signal to the controller 42, and after the judgment of the controller 42, the controller 42 controls the steam supply unit 21 or the water supply unit 22 to be started, and the heat exchange medium is respectively added into the heat exchanger 1, so that the temperature of the discharged desulfurization solution is always maintained between 35 ℃ and 40 ℃, and the desulfurization effect is ensured.
As a specific embodiment of the coking gas desulfurization liquid temperature control system provided in the present invention, please refer to fig. 1, a steam valve 25 is disposed on the connecting pipeline between the steam supply unit 21 and the heat exchanger 1, a water supply valve 26 is disposed on the connecting pipeline between the water supply unit 22 and the heat exchanger 1, and the steam valve 25 and the water supply valve 26 are both solenoid valves and are controlled by the controller 42.
In a specific embodiment, the steam is a heat exchange medium with a higher temperature, the circulating water is a heat exchange medium with a lower temperature, the controller 42 controls the steam supply amount and the water supply amount to keep the heat exchange temperature within a predetermined range, if the temperature of the desulfurization solution collected by the temperature controller 41 is higher, the controller 42 sends an instruction to close the steam valve 25 and open the water supply valve 26 to reduce the heat exchange temperature of the heat exchanger 1, and the temperature of the discharged desulfurization solution is reduced. If the temperature of the doctor solution collected by the temperature controller 41 is low, the controller 42 sends an instruction to open the steam valve 25 and close the water supply valve 26 to raise the heat exchange temperature of the heat exchanger 1, so that the temperature of the discharged doctor solution will be raised. Therefore, the temperature of the desulfurization solution is always maintained between 35 and 40 ℃ through the control and the regulation of the controller 42, and the desulfurization solution in the range can play a good role in desulfurization of the coking gas.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system provided by the present invention, please refer to fig. 1, a first desulfurization liquid valve 7 is disposed on the first outlet end of the heat exchanger 1, the first desulfurization liquid valve 7 is a solenoid valve, and the flow of the desulfurization liquid of the output heat exchanger 1 can be controlled.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system provided by the utility model, please refer to fig. 1, the circulating water pump 32 is an electric control type water pump, which can control the action thereof through the controller 42, and the control effect is good, and the opening and closing are flexible.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system, please refer to fig. 1, the steam supply unit 21 is a steam generator, the water supply unit 22 is a water storage tank, the steam generator can generate steam, the steam is a high-temperature medium, the heat exchange can be carried out on the desulfurization liquid in the heat exchanger 1, the water storage tank contains purified water, the temperature of the water is normal temperature, the upper end of the water storage tank is provided with an opening, the air cooler 33 is fixedly arranged on the side support of the water storage tank, and the air cooler 33 is cooled by blowing towards the medium (circulating water) in the water storage tank.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system provided by the utility model, please refer to fig. 1, heat exchanger 1 is plate heat exchanger, plate heat exchanger's heat transfer effect is obvious, and the heat recovery rate is high, and the heat loss is little, and heat exchange efficiency is high.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system, please refer to fig. 1, be equipped with second desulfurization liquid valve 8 on the desulfurization liquid pipeline 5, be equipped with drainage valve 61 on the pipeline of the second exit end intercommunication drainage pond 6 of heat exchanger 1, steam and circulating water in the water storage tank can be discharged to drainage valve 61 to flow to drainage pond 6.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system, please refer to fig. 1, be equipped with the level gauge 10 that is used for monitoring the circulating water liquid level in the drainage pond 6, level gauge 10 sets up the lateral part at drainage pond 6, can monitor the liquid level value, prevents that the too high emergence of liquid level from spilling over.
In one embodiment, the liquid level meter 10 is electrically connected to the controller 42, the liquid level meter 10 is an electromagnetic liquid level meter, and can send a liquid level signal to the controller 42, the controller 42 is further electrically connected to an alarm, a liquid level threshold is set on the controller 42, and when the liquid level signal monitored by the liquid level meter 10 is not within the threshold range, the alarm sends an alarm signal to remind an operator of paying attention to the medium level in the drainage basin 6.
As a specific implementation manner of the coking gas desulfurization liquid temperature control system provided by the utility model, please refer to fig. 1, through being connected with the main desulfurization liquid pipeline 9 between the desulfurization liquid pipeline 5 and the desulfurizing tower, be equipped with the main desulfurization liquid valve 91 on the main desulfurization liquid pipeline 9. When heat exchange of the desulfurization solution is not required, the desulfurization solution can directly flow into the desulfurization tower through the main desulfurization solution pipe 9, the main desulfurization solution valve 91 plays a role in opening or closing the main desulfurization solution pipe 9, and the amount of the desulfurization solution flowing into the desulfurization tower can be controlled.
As a specific embodiment of the coking gas desulfurization liquid temperature control system provided by the present invention, please refer to fig. 1, the controller 42 is a PLC controller, the PLC controller is a programmable controller 42, and can be programmed on the controller 42, and the programming can control or adjust the circulating water pump 32, the steam valve 25 and the water supply valve 26, so that the steam and the circulating water flowing into the heat exchanger 1 have a certain amount, and parameters such as the working time and the working frequency of the circulating water pump 32 are controlled.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Coking gas desulfurization liquid temperature control system, its characterized in that includes:
the first inlet end of the heat exchanger is communicated with a desulfurization liquid pipeline, the first outlet end of the heat exchanger is communicated with the desulfurization tower, and the second outlet end of the heat exchanger is communicated with a drainage pool;
the heat exchange mechanism comprises a steam supply unit and a water supply unit; the steam supply unit and the water supply unit are communicated to a second inlet end of the heat exchanger through a steam pipeline and a water supply pipeline respectively;
the circulating water mechanism comprises a circulating water pipeline, a circulating water pump and an air cooler; one end of the circulating water pipeline is communicated with the drainage pool, the other end of the circulating water pipeline is communicated with the water supply unit, the circulating water pump is arranged on the circulating water pipeline and used for pumping circulating water to the water supply unit, and the air cooler is arranged above the water supply unit and used for cooling the circulating water;
the control mechanism comprises a temperature controller arranged on a first outlet end of the heat exchanger and a controller used for receiving a temperature signal collected by the temperature controller; the circulating water pump, the steam supply unit and the water supply unit are all controlled by the controller.
2. The coke gas desulfurization solution temperature control system according to claim 1, wherein a steam valve is provided on a connection pipe between the steam supply unit and the heat exchanger, a water supply valve is provided on a connection pipe between the water supply unit and the heat exchanger, and both the steam valve and the water supply valve are controlled by the controller.
3. The coke gas desulfurization solution temperature control system of claim 1, wherein a first desulfurization solution valve is disposed at the first outlet end of the heat exchanger.
4. The coke gas desulfurization solution temperature control system according to claim 1, wherein said circulating water pump is an electrically controlled water pump.
5. The coke gas desulfurization solution temperature control system according to claim 1, wherein said steam supply unit is a steam generator and said water supply unit is a water storage tank.
6. The coke gas desulfurization solution temperature control system of claim 1, wherein said heat exchanger is a plate heat exchanger.
7. The coke gas desulfurization solution temperature control system as claimed in claim 1, wherein a second desulfurization solution valve is provided on the desulfurization solution pipeline, and a drain valve is provided on a pipeline of which the second outlet end of the heat exchanger is communicated with the drain tank.
8. The coke gas desulfurization solution temperature control system as defined in claim 1, wherein a level gauge for monitoring a level of the circulating water is provided in said drain tank.
9. The coking gas desulfurization liquid temperature control system according to claim 1, wherein a main desulfurization liquid pipeline is connected between the desulfurization liquid pipeline and the desulfurization tower, and a main desulfurization liquid valve is arranged on the main desulfurization liquid pipeline.
10. The coke gas desulfurization solution temperature control system of claim 1, wherein said controller is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185114.2U CN210072430U (en) | 2019-07-25 | 2019-07-25 | Coking gas desulfurization liquid temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185114.2U CN210072430U (en) | 2019-07-25 | 2019-07-25 | Coking gas desulfurization liquid temperature control system |
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| Publication Number | Publication Date |
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| CN210072430U true CN210072430U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921185114.2U Active CN210072430U (en) | 2019-07-25 | 2019-07-25 | Coking gas desulfurization liquid temperature control system |
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| CN (1) | CN210072430U (en) |
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- 2019-07-25 CN CN201921185114.2U patent/CN210072430U/en active Active
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