Liquid chlorine gasification device capable of preventing outlet pipe of gasifier from being over-chlorinated

Abstract

The utility model relates to a liquid chlorine gasification device capable of preventing over-chlorination of an outlet pipe of a gasifier in the technical field of gasifiers, which comprises a water bath box and a heat exchange coil pipe arranged in the water bath box, and a hot water inlet pipe and a water outlet pipe are respectively arranged at the top and the bottom of the water bath box; a liquid chlorine inlet pipe and a chlorine outlet pipe are arranged at the lower end and the upper end of the heat exchange coil pipe, a liquid inlet valve is arranged at an inlet of the heat exchange coil pipe, a heat exchange jacket is arranged on the outer side of a section of vertical pipe of the outlet pipe, and a front temperature sensor and a rear temperature sensor are installed on the side walls, at the two ends of the heat exchange jacket, of the outlet pipe respectively and used for detecting the temperature of chlorine media in the outlet pipe before heat exchange and after heat exchange. A hot water supply port and a water outlet are formed in the side wall of the heat exchange jacket, a bypass pipe is arranged on one side of a water inlet pipe of the water bath box and connected to the heat exchange jacket water supply port and the heat exchange jacket water outlet to return water to the water bath box, and an electric control box is arranged outside the water bath box. The liquid chlorine gasification device is simple to transform but has a huge effect, can judge whether an over-chlorine condition occurs or not by monitoring the temperature in the outlet pipe, and can give an alarm prompt at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of vaporizers, and particularly relates to a liquid chlorine vaporization device capable of preventing chlorine overfeed in the outlet pipe of a vaporizer. Background Art

[0002] Liquid chlorine is a raw material often used in many chemical productions. For example, in the production process of chlorinated paraffin, liquid chlorine needs to be vaporized into chlorine gas and then introduced into a reaction kettle to participate in a chemical reaction. The vaporization of liquid chlorine requires a vaporizer. Currently, the common liquid chlorine vaporizer is mainly a water bath vaporizer, that is, the liquid chlorine pipeline is designed in a coiled pipe shape and immersed in a water tank filled with hot water for heat exchange to vaporize liquid chlorine into chlorine gas. However, in the existing water bath vaporizer, there is occasionally a situation where the vaporization of liquid chlorine is incomplete. Once the unvaporized liquid chlorine enters the downstream buffer tank or even the reaction kettle through the outlet pipe, which is commonly known as chlorine overfeed. This situation will cause great trouble to the normal production of chlorinated paraffin. Therefore, it is necessary to design a liquid chlorine vaporization device capable of preventing chlorine overfeed in the outlet pipe of a vaporizer to avoid the occurrence of chlorine overfeed in the outlet pipe of the vaporizer as much as possible. Summary of the Utility Model

[0003] In view of the above situation, the utility model provides a liquid chlorine vaporization device capable of preventing chlorine overfeed in the outlet pipe of a vaporizer, which can effectively avoid the occurrence of chlorine overfeed in the outlet pipe of the vaporizer.

[0004] In order to achieve the above object, the utility model adopts the following technical solutions:

[0005] A liquid chlorine vaporization device capable of preventing chlorine overfeed in the outlet pipe of a vaporizer includes a water bath tank and a heat exchange coiled pipe arranged in the water bath tank. The top and bottom of the water bath tank are respectively connected with a water inlet pipe and a water outlet pipe for the inlet and outlet of hot water medium; the lower end and the upper end of the heat exchange coiled pipe are correspondingly connected with an inlet pipe and an outlet pipe, which are respectively used for the inlet of liquid chlorine and the output of chlorine gas.

[0006] A heat exchange jacket is coaxially sleeved on the outer side of a vertical pipe section of the outlet pipe close to the heat exchange coiled pipe. Front and rear temperature sensors are respectively installed on the side walls of the outlet pipe above and below the heat exchange jacket, which are respectively used for detecting the temperature difference of the chlorine medium in the outlet pipe before and after the heat exchange jacket.

[0007] The upper and lower ends of the side wall of the heat exchange jacket are respectively connected with a water supply port and a drain port for the inlet and outlet of hot water medium. The water inlet pipe of the water bath tank is bifurcated through a three-way joint to be connected with a bypass pipe. The bypass pipe is connected to the water supply port of the heat exchange jacket through a bypass valve. The drain port is connected to the top of the water bath tank through a return pipe. An electric control box is arranged on the outer side wall of the water bath tank, and a liquid inlet valve is arranged on the inlet pipe of the heat exchange coiled pipe.

[0008] Both the bypass valve and the liquid inlet valve are electric control valves, and the front temperature sensor, the rear temperature sensor, the bypass valve, and the liquid inlet valve are all electrically connected to the electric control box.

[0009] Furthermore, a first thermometer and a flowmeter are also provided on the bypass pipe, and both the first thermometer and the flowmeter are electrically connected to the electric control box.

[0010] Furthermore, a water inlet valve is provided between the three-way joint and the water inlet pipe of the water bath tank. The water inlet valve is an electric control valve and is electrically connected to the electric control box.

[0011] Furthermore, a second thermometer is also provided on the side wall at the bottom of the water bath tank for detecting the water outlet temperature at the bottom of the water bath tank, and a water outlet valve is provided on the water outlet pipe of the water bath tank.

[0012] Furthermore, a manhole is also provided on the top of the water bath tank, and a manhole cover is cooperatively provided on the manhole to facilitate personnel to carry out cleaning and maintenance work.

[0013] Furthermore, an observation port is also provided on the top of the water bath tank, and a transparent eyepiece is provided on the observation port for observing the operation condition inside the water bath tank.

[0014] Furthermore, a monitoring port is also provided on the top of the water bath tank, and a pH meter is provided on the monitoring port for monitoring whether there is chlorine leakage in the heat exchange coil inside the water bath tank. Because once chlorine leakage occurs in the heat exchange coil, the pH value of the water body inside the water bath tank will decrease, showing obvious acidity.

[0015] Furthermore, an alarm is provided on the electric control box. The alarm is an audible and visual alarm for giving an audible and visual alarm when an abnormal situation occurs in the water bath vaporizer.

[0016] The present utility model further includes other components that can enable it to be used normally, which are all conventional means in the art. In addition, the devices or components not defined in the present utility model, such as: water bath tank, heat exchange coil, temperature sensor, electric control valve, thermometer, flowmeter, pH meter, electric control box and its internal control circuit setting, etc., all adopt the existing technologies in the art.

[0017] The beneficial effects of the present utility model are as follows:

[0018] A liquid chlorine vaporization device provided by the utility model can prevent over-chlorination of the outlet pipe of the vaporizer. A temperature sensor and a hot water jacket heating device are added to the outlet pipe of the water bath vaporizer. The equipment transformation is simple and cost-saving, but the function is huge. Since the medium temperatures of chlorine gas and liquid chlorine are quite different, by online monitoring the medium temperature flowing through the outlet pipe, it is possible to accurately judge whether over-chlorination occurs in the outlet pipe. Once the temperature sensor detects over-chlorination, corresponding countermeasures will be automatically activated: on the one hand, control and reduce the liquid chlorine inlet volume of the inlet pipe of the vaporizer to reduce the working load of the vaporizer and slow down the continuous discharge of the medium from the outlet pipe; on the other hand, control the hot water flow rate into the hot water jacket to achieve emergency heating and vaporization of the liquid chlorine in the outlet pipe; at the same time, an alarm prompt is issued to remind the staff to perform manual intervention in time to prevent the expansion of abnormal problems and ensure the safe operation of downstream equipment and chemical reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the liquid chlorine vaporization device in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments.

[0021] It should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc. indicating the orientation or position relationship are all based on the drawings shown, only for the convenience of description.

[0022] Embodiment

[0023] As Figure 1 shown, a liquid chlorine vaporization device that can prevent over-chlorination of the outlet pipe of the vaporizer includes a water bath tank 1 and a heat exchange coil 2 arranged in the water bath tank. The top and bottom of the water bath tank are respectively connected with a water inlet pipe 3 and a water outlet pipe 4 for the inlet and outlet of the hot water medium; the lower end and the upper end of the heat exchange coil are correspondingly connected with an inlet pipe 5 and an outlet pipe 6 for the inlet of liquid chlorine and the output of chlorine gas respectively.

[0024] A heat exchange jacket 7 is coaxially sleeved outside a vertical pipe section of the outlet pipe close to the heat exchange coil. A front temperature sensor 8 and a rear temperature sensor 9 are respectively installed on the side walls of the outlet pipe above and below the heat exchange jacket to detect the temperature difference of the chlorine medium in the outlet pipe before and after the heat exchange jacket respectively.

[0025] The upper and lower ends of the side wall of the heat exchange jacket are respectively connected with a water supply port 10 and a drain port 11 for the inlet and outlet of hot water medium. The inlet pipe of the water bath tank is bifurcated through a three-way joint 12 and connected with a bypass pipe 13. The bypass pipe is connected to the water supply port of the heat exchange jacket through a bypass valve 14. The drain port is connected to the top of the water bath tank through a return pipe 15. An electric control box 16 is arranged on the outer side wall of the water bath tank, and a liquid inlet valve 17 is arranged on the inlet pipe of the heat exchange coil.

[0026] Both the bypass valve and the liquid inlet valve are electric control valves, and the front temperature sensor, the rear temperature sensor, the bypass valve, and the liquid inlet valve are all electrically connected to the electric control box.

[0027] A thermometer 18 and a flow meter 19 are also arranged on the bypass pipe, and both the thermometer and the flow meter are electrically connected to the electric control box.

[0028] An inlet valve 20 is arranged between the three-way joint and the inlet pipe of the water bath tank. The inlet valve is an electric control valve, and the inlet valve is electrically connected to the electric control box.

[0029] A thermometer 21 is also arranged on the side wall at the bottom of the water bath tank for detecting the outlet water temperature at the bottom of the water bath tank, and an outlet valve 22 is arranged on the outlet pipe of the water bath tank.

[0030] A manhole is also arranged on the top of the water bath tank, and a manhole cover 23 is arranged in cooperation with the manhole to facilitate personnel to carry out cleaning and maintenance work.

[0031] An observation port is also arranged on the top of the water bath tank, and a transparent eyepiece 24 is arranged on the observation port for observing the operation condition inside the water bath tank.

[0032] A monitoring port is also arranged on the top of the water bath tank, and a pH meter 25 is arranged on the monitoring port for monitoring whether there is chlorine leakage in the heat exchange coil inside the water bath tank.

[0033] An alarm 26 is arranged on the electric control box. The alarm is an audible and visual alarm. When abnormal conditions such as over-chlorine phenomenon occur in the outlet pipe, the alarm will give an audible and visual alarm.

[0034] The working principle of the present utility model is as follows:

[0035] When liquid chlorine is vaporized normally in a water bath vaporizer, over-chlorination generally does not occur in its outlet pipe. When the water bath vaporizer malfunctions and the liquid chlorine is not completely vaporized, there may be a situation of over-chlorination in the outlet pipe. Once the output chlorine gas in the outlet pipe contains a certain amount of unvaporized liquid chlorine, the temperature in the outlet pipe will also be on the low side. After the temperature sensor on the outlet pipe detects the abnormal temperature, a signal will be sent to the electric control box, and then the bypass valve of the bypass pipe will be controlled to open, and hot water will be introduced into the heat exchange jacket to quickly heat up the outlet pipe, so that the unvaporized liquid chlorine in the outlet pipe is vaporized again by heating. At the same time, by comparing and analyzing the temperature difference between the two temperature sensors before and after the heat exchange jacket, it is judged whether the over-chlorination phenomenon in the outlet pipe has been completely eliminated, so as to control the increase of the flow rate of the hot water introduced into the heat exchange jacket, and even control the reduction of the liquid chlorine inlet amount at the liquid inlet end of the heat exchange coil in the water bath tank, and coordinate with each other to achieve the purpose of completely vaporizing the over-chlorination phenomenon in the outlet pipe; at the same time, the audible and visual alarm on the electric control box gives an alarm prompt to remind the staff to check and handle the abnormal problems of the water bath vaporizer in time.

[0036] The technical solution of the present utility model is not limited to the limitations of the above specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art. Any technical deformation made within the spirit and principle of the present utility model falls within the protection scope of the present utility model.

Claims

1. A liquid chlorine gasification device capable of preventing the outlet pipe of the gasifier from being over-chlorinated, comprising a water bath and a heat exchange coil arranged in the water bath, wherein the top and bottom of the water bath are respectively connected with an inlet pipe and an outlet pipe for hot water medium to enter and exit; the lower end and the upper end of the heat exchange coil are respectively connected with an inlet pipe and an outlet pipe for liquid chlorine to enter and chlorine gas to output; the characteristics are: A heat exchange jacket is provided on the outer coaxial sleeve of a section of vertical pipe of the outlet pipe close to the heat exchange coil. A front temperature sensor and a rear temperature sensor are respectively installed on the side walls of the outlet pipe above and below the heat exchange jacket, which are respectively used to detect the temperature of the chlorine medium in the outlet pipe located in front of the heat exchange jacket and behind the heat exchange jacket. The upper and lower ends of the side walls of the heat exchange jacket are respectively connected with a water supply port and a drain port for the hot water medium to enter and exit. The water inlet pipe of the water bath is bifurcated with a bypass pipe through a three-way joint. The bypass pipe is connected to the water supply port of the heat exchange jacket through a bypass valve. The drain port is connected to the top of the water bath through a return pipe. An electric control box is arranged on the outer wall of the water bath. A liquid inlet valve is arranged on the inlet pipe of the heat exchange coil. Both the bypass valve and the liquid inlet valve are electric regulating valves. The front temperature sensor, the rear temperature sensor, the bypass valve and the liquid inlet valve are all electrically connected to the electric control box.

2. A liquid chlorine gasification device capable of preventing the gasifier outlet pipe from over-chlorination according to claim 1, characterized in that: The bypass pipe is also provided with a thermometer 1 and a flow meter, and both the thermometer 1 and the flow meter are electrically connected to the electric control box.

3. A liquid chlorine gasification device capable of preventing the gasifier outlet pipe from over-chlorination according to claim 1, characterized in that: A water inlet valve is arranged between the three-way joint and the water inlet pipe of the water bath, and the water inlet valve is an electric regulating valve, and the water inlet valve is electrically connected to the electric control box.

4. A liquid chlorine gasification device capable of preventing the gasifier outlet pipe from over-chlorination according to claim 1, characterized in that: The second thermometer is also arranged on the side wall at the bottom of the water bath, which is used to detect the outlet water temperature at the bottom of the water bath. The outlet pipe of the water bath is provided with an outlet valve.

5. A liquid chlorine gasification device capable of preventing the gasifier outlet pipe from over-chlorination according to claim 1, characterized in that: A manhole is also arranged on the top of the water bath box, and a manhole cover is arranged on the manhole.

6. A liquid chlorine gasification device capable of preventing the gasifier outlet pipe from over-chlorination according to claim 1, characterized in that: The top of the water bath is also provided with an observation port, on which a transparent eyepiece is provided.

7. A liquid chlorine gasification device capable of preventing the outlet pipe of the gasifier from over-chlorination according to claim 1, characterized in that: The top of the water bath is also provided with a monitoring port, on which a pH meter is provided.

8. A liquid chlorine gasification device capable of preventing the outlet pipe of the gasifier from over-chlorination according to claim 1, characterized in that: The electric control box is provided with an alarm, which is an audible and visual alarm.

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