阅读说明：本技术 一种氯化氢合成炉石墨块冷却系统 (Graphite block cooling system of hydrogen chloride synthetic furnace ) 是由 杨明轩 王中军 王志国 刘鹏 朱文忠 杨志新 许忠义 陈鑫 雷滋栋 于 2019-12-03 设计创作，主要内容包括：本发明提供一种氯化氢合成炉石墨块冷却系统,包括纯水槽、循环泵和换热器,所述纯水槽的进水口与纯水管路连接,用于向所述纯水槽内注入纯水；所述纯水槽的出水口通过第一出水管路与所述循环泵连接,所述循环泵通过第二出水管路与所述换热器连接,所述换热器通过第三出水管路与氯化氢合成炉的冷却液进口连接,用于将所述纯水槽内的纯水冷却降温后输送入所述氯化氢合成炉的循环水通道内。该系统为闭路循环,纯水可以重复使用,节能环保；使用的循环水为纯水,不会造成合成炉循环水通道堵塞和石墨筒结垢,避免石墨块烧损的事故,延长合成炉使用寿命,降低合成炉非正常停车的检修频次。(The invention provides a graphite block cooling system of a hydrogen chloride synthetic furnace, which comprises a pure water tank, a circulating pump and a heat exchanger, wherein a water inlet of the pure water tank is connected with a pure water pipeline and is used for injecting pure water into the pure water tank; the water outlet of the pure water tank is connected with the circulating pump through a first water outlet pipeline, the circulating pump is connected with the heat exchanger through a second water outlet pipeline, and the heat exchanger is connected with a cooling liquid inlet of the hydrogen chloride synthesis furnace through a third water outlet pipeline and is used for cooling and conveying the pure water in the pure water tank into a circulating water channel of the hydrogen chloride synthesis furnace. The system is in closed cycle, pure water can be reused, and the system is energy-saving and environment-friendly; the used circulating water is pure water, so that the blockage of a circulating water channel of the synthesis furnace and the scaling of a graphite barrel cannot be caused, the burning loss accident of graphite blocks is avoided, the service life of the synthesis furnace is prolonged, and the maintenance frequency of abnormal shutdown of the synthesis furnace is reduced.)

1. A graphite block cooling system of a hydrogen chloride synthetic furnace is characterized by comprising a pure water tank (1), a circulating pump (2) and a heat exchanger (3),

the pure water tank (1) is provided with a water inlet (11), a water outlet (12) and a water return port (13), and the water inlet (11) of the pure water tank (1) is connected with a pure water pipeline (41) and is used for injecting pure water into the pure water tank (1);

a water outlet (12) of the pure water tank (1) is connected with the circulating pump (2) through a first water outlet pipeline (42), the circulating pump (2) is connected with the heat exchanger (3) through a second water outlet pipeline (43), and the heat exchanger (3) is connected with a cooling liquid inlet (51) of the hydrogen chloride synthesis furnace (5) through a third water outlet pipeline (44) and is used for cooling and conveying the pure water in the pure water tank (1) into a circulating water channel of the hydrogen chloride synthesis furnace (5);

and a water return port (13) of the pure water tank (1) is connected with a cooling liquid outlet (52) of the hydrogen chloride synthesis furnace (5) through a water return pipeline (45) and is used for conveying water flowing out of a circulating water channel of the hydrogen chloride synthesis furnace (5) into the pure water tank (1).

2. The graphite block cooling system of the hydrogen chloride synthesis furnace according to claim 1, wherein a liquid level detection device (6) is installed on the pure water tank (1) and used for detecting the liquid level in the pure water tank (1) and sending a detected liquid level signal to the controller (7);

an automatic control valve (81) is installed on the pure water pipeline (41), and the automatic control valve (81) is controlled by the controller (7);

and the controller (7) is connected with the liquid level detection device (6) and the automatic control valve (81) and is used for receiving a liquid level signal sent by the liquid level detection device (6) and controlling the automatic control valve (81) to be opened and closed.

3. The graphite block cooling system of the hydrogen chloride synthesis furnace according to claim 2, wherein the pure water tank (1) is a normal pressure container in the shape of a covered cylinder, the top of the pure water tank (1) is provided with an air inlet (14), a water inlet (11) and a water return port (13), and the cylinder of the pure water tank (1) is provided with an overflow port (15), a liquid level detection device (6), a drain port (16) and a water outlet (12).

4. The graphite block cooling system of the hydrogen chloride synthesizing furnace according to claim 3, wherein an insulating layer (17) is provided outside the pure water tank (1) to prevent pure water in the pure water tank (1) from freezing.

5. The graphite block cooling system of the hydrogen chloride synthesis furnace according to claim 1, wherein the first water outlet pipeline (42) is provided with a first pilot shower valve (82) for draining pure water in the first water outlet pipeline (42).

6. The graphite block cooling system for the hydrogen chloride synthesis furnace according to claim 1, wherein a check valve (83), a pressure gauge (9) and an exhaust valve (84) are arranged on the second water outlet pipeline (43).

7. The graphite block cooling system for the hydrogen chloride synthesis furnace according to claim 1, wherein the heat exchanger (3) is a plate heat exchanger, a heating medium of the heat exchanger (3) is pure water, and a cooling medium of the heat exchanger is circulating water.

8. The graphite block cooling system of the hydrogen chloride synthesis furnace according to claim 1, wherein a PH remote alarm monitor (10) is installed on the water return pipeline (45).

9. The graphite block cooling system for the hydrogen chloride synthesis furnace according to claim 2, wherein a shut-off valve (85) is installed on the first water outlet pipeline (42), the second water outlet pipeline (43), the third water outlet pipeline (44), the water return pipeline (45) and the pure water pipeline (41) at positions upstream and downstream of the automatic control valve (81).

Technical Field

The invention belongs to the technical field of chemical industry, and particularly relates to a graphite block cooling system of a hydrogen chloride synthesis furnace.

Background

The graphite hydrogen chloride synthetic furnace is a chemical synthesis or incineration device manufactured by taking a graphite material as a base material, is a device for preparing hydrogen chloride gas by directly combusting chlorine and hydrogen, and consists of a combustor, a furnace barrel, a cooling device and a safe explosion-proof device. The hydrogen chloride synthetic furnace generally adopts the graphite block in the circulating water cooling synthetic furnace to take away the heat that produces when hydrogen burns, but because circulating water impurity content is great, quality of water is relatively poor, causes the partial circulating water passageway of graphite block to be blockked up, and burning section graphite section scale deposit makes circulating water heat exchange efficiency descend seriously, and the synthetic furnace cooling effect is not good, causes the graphite block to burn when serious and decreases and breaks, shortens synthetic furnace life, increases the maintenance frequency that the synthetic furnace normally shut down.

Disclosure of Invention

The invention aims to provide a graphite block cooling system of a hydrogen chloride synthesis furnace, which aims to solve the problems of blockage of a circulating water channel of the synthesis furnace and scaling of a graphite cylinder caused by poor quality of circulating water.

In order to achieve the purpose, the invention adopts the following technical scheme: the graphite block cooling system of the hydrogen chloride synthetic furnace is characterized by comprising a pure water tank, a circulating pump and a heat exchanger, wherein the pure water tank is provided with a water inlet, a water outlet and a water return port, and the water inlet of the pure water tank is connected with a pure water pipeline and used for injecting pure water into the pure water tank; the water outlet of the pure water tank is connected with the circulating pump through a first water outlet pipeline, the circulating pump is connected with the heat exchanger through a second water outlet pipeline, and the heat exchanger is connected with a cooling liquid inlet of the hydrogen chloride synthesis furnace through a third water outlet pipeline and is used for cooling and conveying the pure water in the pure water tank into a circulating water channel of the hydrogen chloride synthesis furnace; and a water return port of the pure water tank is connected with a cooling liquid outlet of the hydrogen chloride synthesis furnace through a water return pipeline and is used for conveying water flowing out of a circulating water channel of the hydrogen chloride synthesis furnace into the pure water tank.

Preferably, a liquid level detection device is mounted on the pure water tank and used for detecting the liquid level in the pure water tank and sending a detected liquid level signal to the controller; the pure water pipeline is provided with an automatic control valve which is controlled by the controller; the controller is connected with the liquid level detection device and the automatic control valve and used for receiving the liquid level signal sent by the liquid level detection device and controlling the automatic control valve to be opened and closed.

Preferably, the pure water tank is a normal pressure container, and is shaped like a cylinder with a cover, the top of the pure water tank is provided with an atmosphere vent, a water inlet and a water return port, and the cylinder body of the pure water tank is provided with an overflow port, a liquid level detection device, a drain port and a water outlet.

Preferably, an insulating layer is arranged on the outer side of the pure water tank to prevent pure water in the pure water tank from freezing.

Preferably, a first guiding and leaching valve is arranged on the first water outlet pipeline and used for draining pure water in the first water outlet pipeline.

Preferably, a check valve, a pressure gauge and an exhaust valve are arranged on the second water outlet pipeline.

Preferably, the heat exchanger is a plate heat exchanger, a heating medium of the heat exchanger is pure water, and a cooling medium of the heat exchanger is circulating water.

Preferably, a PH remote alarm monitor is installed on the water return pipeline.

Preferably, the first water outlet pipeline, the second water outlet pipeline, the third water outlet pipeline, the water return pipeline and the pure water pipeline are provided with cut-off valves at positions upstream and downstream of the automatic control valve.

Compared with the prior art, the graphite block cooling system for the hydrogen chloride synthesis furnace provided by the invention has the following advantages: the system is in closed cycle, pure water can be reused, and the system is energy-saving and environment-friendly; the used circulating water is pure water, so that the blockage of a circulating water channel of the synthesis furnace and the scaling of a graphite barrel cannot be caused, the burning loss accident of graphite blocks is avoided, the service life of the synthesis furnace is prolonged, and the maintenance frequency of abnormal shutdown of the synthesis furnace is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a pure water tank.

Fig. 4 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a heat exchanger.

Reference numerals:

1-a pure water tank, 11-a water inlet,

12-a water outlet, 13-a water return port,

2-a circulating pump, 3-a heat exchanger,

41-pure water pipeline, 42-first water outlet pipeline,

43-a second water outlet pipeline, 44-a third water outlet pipeline,

45-water return pipeline, 5-hydrogen chloride synthetic furnace,

51-a coolant inlet, 52-a coolant outlet,

6-a liquid level detection device, 7-a controller,

81-self-control valve, 82-pilot shower valve.

83-check valves, 84-exhaust valves,

85-a shut-off valve, 86-a big end and a small end,

14-an air inlet, 15-an overflow port,

16-a clean discharge port, 17-a heat insulation layer,

18-manhole, 19-liquid level lower limit position,

110-a trench, 9-a pressure gauge,

10-PH remote alarm monitor, 31-heat medium inlet,

32-a heating medium outlet, 33-a cooling medium inlet,

34-refrigerant outlet.

Detailed Description

In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.

Fig. 1 shows a schematic structural diagram of a first embodiment provided by the present invention.

As shown in fig. 1, the graphite block cooling system of the hydrogen chloride synthesis furnace comprises a pure water tank 1, a circulating pump 2 and a heat exchanger 3, wherein the pure water tank 1 is provided with a water inlet 11, a water outlet 12 and a water return port 13, and the water inlet 11 of the pure water tank 1 is connected with a pure water pipeline 41 and is used for injecting pure water into the pure water tank 1; the water outlet 12 of the pure water tank 1 is connected with the circulating pump 2 through a first water outlet pipeline 42, the circulating pump 2 is connected with the heat exchanger 3 through a second water outlet pipeline 43, and the heat exchanger 3 is connected with a cooling liquid inlet 51 of the hydrogen chloride synthesis furnace 5 through a third water outlet pipeline 44, and is used for cooling and conveying the pure water in the pure water tank 1 into a circulating water channel of the hydrogen chloride synthesis furnace 5; the water return port 13 of the pure water tank 1 is connected with the coolant outlet 52 of the hydrogen chloride synthesizing furnace 5 through a water return pipeline 45, and is used for conveying water flowing out of the circulating water channel of the hydrogen chloride synthesizing furnace 5 into the pure water tank 1.

The pure water is water which is treated by a water treatment facility and has extremely high chemical purity, the content of impurities such as calcium ions is low and reaches the microgram/liter level, and the pure water is also called desalted water or desalted water.

Pure water is introduced into the pure water tank 1 from an external system through a pure water pipeline 41, then is output from the pure water tank 1 by the circulating pump 2, is cooled by the heat exchanger 3, enters a circulating water channel of the hydrogen chloride synthesis furnace 5, cools the graphite block to take away heat generated during hydrogen combustion, and then enters the pure water tank 1 to perform the next cooling circulation. The cooling liquid inlet 51 of the hydrogen chloride synthesizing furnace 5 is positioned at the lower part, the cooling liquid outlet 52 is positioned at the upper part, and pure water with lower temperature enters the circulating water channel of the hydrogen chloride synthesizing furnace 5 from the cooling liquid inlet 51 to cool the high-temperature medium in the graphite block, then exits from the cooling liquid outlet 52 and enters the pure water tank 1 through the water return pipeline 45.

Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

As shown in fig. 2, a liquid level detection device 6 is installed on the pure water tank 1, and is configured to detect a liquid level in the pure water tank 1 and send a detected liquid level signal to a controller 7; an automatic control valve 81 is installed on the pure water pipeline 41, and the automatic control valve 81 is controlled by the controller 7; the controller 7 is connected with the liquid level detection device 6 and the automatic control valve 81, and is used for receiving the liquid level signal sent by the liquid level detection device 6 and controlling the opening and closing of the automatic control valve 81. A liquid level low alarm value and a liquid level high alarm value are set on the controller 7, and when the controller 7 judges that the liquid level of the pure water tank 1 reaches the liquid level low alarm value according to the received liquid level signal, the automatic control valve 81 is controlled to be opened to inject water; when the liquid level of the pure water tank 1 reaches the high liquid level alarm value, the automatic control valve 81 is controlled to be closed, and water injection is stopped. Meanwhile, the staff can also check the liquid level height of the pure water tank 1 through the on-site liquid level detection device 6.

The liquid level low alarm value is consistent with the liquid level value at the liquid level lower limit position 19 and is higher than the water outlet 12 by a certain distance so as to prevent the circulating pump 2 from being pumped out. When the liquid level of the deionized water tank 1 reaches the lower limit liquid level position 19, the automatic control valve 81 in the deionized water line 41 is opened.

And a PH remote alarm monitor 10 is arranged on the water return pipeline 45. This PH teletransmission alarm monitor 10 can connect to the master control room of hydrogen chloride synthetic furnace 5, if leak in the furnace body of hydrogen chloride synthetic furnace 5, hydrogen chloride fuses into pure water, can cause coolant liquid export 52 pure water PH to be low promptly, and PH teletransmission alarm monitor 10 can monitor the synthetic furnace 5 operating condition of hydrogen chloride in real time, and the staff can in time take measures after discovering unusually.

Fig. 3 shows a schematic structural view of a clear water tank.

As shown in fig. 3, the pure water tank 1 is a normal pressure container, and is shaped like a cylinder with a cover, the top of the pure water tank 1 is provided with an air inlet 14, a water inlet 11 and a water return port 13, and the cylinder body of the pure water tank 11 is provided with an overflow port 15, a liquid level detection device 6, a drain port 16 and a water outlet 13. An insulating layer 17 is arranged on the outer side of the pure water tank 1 to prevent pure water in the pure water tank 1 from freezing.

The atmospheric port 14 is used for discharging the gas, and the overflow port 15 is used for discharging the overflowing pure water to the trench 110 when the liquid level in the pure water tank 1 is too high. The drain port 16 is used for draining the pure water in the pure water tank 1, and is mostly used for maintenance. The liquid level detection device 6 can display the liquid level in the pure water tank 1. The top and barrel manholes 18 are used for manual service.

Fig. 4 shows a schematic structural diagram of a third embodiment provided by the present invention.

As shown in fig. 4, a first guiding and shower valve 82 is disposed on the first water outlet pipe 42 for draining pure water in the first water outlet pipe 42. The second water outlet pipeline 43 is provided with a check valve 83, a pressure gauge 9 and an exhaust valve 84.

Fig. 5 shows a schematic view of the heat exchanger.

As shown in fig. 5, the heat exchanger 3 may be a plate heat exchanger, or may be another type of heat exchanger. The heating medium of the heat exchanger 3 is pure water, and the refrigerant is circulating water. Pure water enters the heat exchanger 3 from the heat medium inlet 31 through the second water outlet pipeline 43, is cooled, has a reduced temperature, reaches a temperature value required by the process, and is output from the heat medium outlet 32 through the third water outlet pipeline 44 to enter a circulating water channel of the hydrogen chloride synthesis furnace 5. Circulating water as a refrigerant enters the heat exchanger 3 through the refrigerant inlet 33, exchanges heat with pure water entering the heat exchanger 3, and is then discharged through the refrigerant outlet 34. The four pipelines connected with the heat exchanger 3 are provided with a shut-off valve 85 and a reducer 86, meanwhile, the second water outlet pipeline 43 and the pipeline connected with the refrigerant inlet 33 are provided with a pilot shower valve, and the third water outlet pipeline 44 and the pipeline connected with the refrigerant outlet 34 are provided with exhaust valves.

The first water outlet pipeline 42, the second water outlet pipeline 43, the third water outlet pipeline 44, the water return pipeline 45 and the pure water pipeline 41 are all provided with a cut-off valve 85 at the positions on the upper and lower streams of the automatic control valve 81 so as to cut off the pipelines, and the operation and the maintenance are convenient.

When the graphite block cooling system of the hydrogen chloride synthetic furnace starts to operate, a stop valve 85 and an automatic control valve 81 on a pure water pipeline 41 are opened, pure water is introduced, and when the liquid level of the pure water tank 1 reaches the upper limit of the liquid level, the automatic valve 81 is automatically closed. The circulating pump 2 is a centrifugal pump, closes the first pilot valve 82 on the first water outlet pipeline 42, opens the stop valve (inlet valve) on the first water outlet pipeline 42, closes the stop valve (outlet valve) on the second water outlet pipeline 43, starts the circulating pump 2, slowly opens the outlet valve, checks the pressure gauge 9, and checks whether the outlet pressure is normal. The shut-off valves 85 on the four pipelines connected with the heat exchanger 3 are all in an open state. When the liquid level in the pure water tank 1 is lowered to the liquid level off-line position 19, that is, the liquid level of the controller 7 is lower than the alarm value, the automatic control valve 22 of the pure water pipeline 41 is automatically opened, and pure water is filled. When the liquid level in the pure water tank 1 reaches the liquid level high alarm value, the automatic control valve 22 is closed, and the water injection is stopped. When the liquid level of the pure water tank 1 is too high due to the failure of the automatic control valve 22, pure water may overflow from the overflow port 15 to the trench 110. The PH remote alarm monitor 10 is installed at the coolant outlet 52 of the hydrogen chloride synthesis furnace 5, if the graphite block is broken, namely, the hydrogen chloride leaks in the furnace body, when the hydrogen chloride leaks and dissolves in the pure water, the PH value of the outlet pure water is reduced, signals can be remotely transmitted to the main control room, and the main control personnel can immediately take measures.

The system is a closed cycle, pure water can be reused, and the system is energy-saving and environment-friendly; the used circulating water is pure water, so that the blockage of a circulating water channel of the synthesis furnace and the scaling of a graphite barrel cannot be caused, the burning loss accident of graphite blocks is avoided, the service life of the synthesis furnace is prolonged, and the maintenance frequency of abnormal shutdown of the synthesis furnace is reduced.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.