Continuous production device of sodium hypochlorite

Abstract

The utility model provides a continuous production device of sodium hypochlorite. The continuous production device comprises a first reaction tower, a second reaction tower, a tail gas absorption tower, a sodium hypochlorite finished product tank, a sodium hypochlorite circulating tank and an alkali liquor storage tank which are communicated, the first reaction tower is communicated with a chlorine pipeline, the first reaction tower, the second reaction tower and the tail gas absorption tower are communicated with a sodium hypochlorite circulating tank through a heat exchanger, and liquid outlet pipelines of the first reaction tower, the second reaction tower and the tail gas absorption tower are respectively provided with a first ORP detector, a second ORP detector and a third ORP detector; a sodium hypochlorite finished product valve is arranged on a liquid inlet pipeline of the sodium hypochlorite finished product tank, a sodium hypochlorite circulating valve is arranged on a liquid inlet pipeline of the sodium hypochlorite circulating tank, and the first ORP detector, the second ORP detector and the third ORP detector are respectively linked with the sodium hypochlorite finished product valve and the sodium hypochlorite circulating valve. The device can monitor the temperature and the ORP value of the circulating liquid in real time, the quality and the production efficiency of the sodium hypochlorite solution are greatly improved, and labor is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium hypochlorite production, in particular to a continuous production device for sodium hypochlorite. Background Art

[0002] Sodium hypochlorite is an inorganic substance with a chlorine-like smell and strong oxidizing properties. Sodium hypochlorite solution is mainly used in disinfection, sterilization and water treatment. At present, there are mainly the following production processes for sodium hypochlorite: one is the double decomposition method of bleaching powder, which has a high production cost; the second is the electrolysis method, which is suitable for the preparation of low-concentration, small-scale sodium hypochlorite solution; the third is the alkali solution chlorination method, which has a simple device, is easy to control, has a low production cost, and is widely used.

[0003] The production of sodium hypochlorite by chlorine-alkali mainly uses chlorine gas and a certain concentration of sodium hypochlorite solution to react to generate sodium chloride, sodium hypochlorite and water, and finally discharges the qualified product into the atmosphere through an induced draft fan. The following problems exist in the current process of using chlorine-alkali to produce sodium hypochlorite: (1) The absorption reaction of chlorine gas by the circulating liquid is an exothermic reaction. In actual production, the temperature of the circulating liquid is often not well controlled, which leads to the decomposition of sodium hypochlorite, thereby reducing the effective chlorine content in the product; (2) Chlorine gas cannot fully contact the circulating liquid, thus affecting production efficiency; (3) The use of manual sampling to determine the effective chlorine content of the sodium hypochlorite solution is not only prone to chlorine leakage, but also increases labor costs. Summary of the invention

[0004] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a continuous production device for sodium hypochlorite is provided, which can monitor the temperature of the circulating liquid and the ORP value of the circulating liquid in real time, greatly improves the quality and production efficiency of the sodium hypochlorite, and saves labor.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A continuous production device for sodium hypochlorite comprises a first reaction tower, a second reaction tower, a tail gas absorption tower, a sodium hypochlorite finished product tank, a sodium hypochlorite circulation tank and an alkali solution storage tank; the first reaction tower is connected to a chlorine pipeline, the gas outlet of the first reaction tower is connected to the gas inlet of the second reaction tower, and the gas outlet of the second reaction tower is connected to the gas inlet of the tail gas absorption tower; the liquid inlets of the first reaction tower, the second reaction tower and the tail gas absorption tower are connected to the sodium hypochlorite circulation tank through a heat exchanger, and the liquid outlet pipelines of the first reaction tower, the second reaction tower and the tail gas absorption tower are connected to the sodium hypochlorite circulation tank through a first ORP detector, a second ORP detector, The third ORP detector is connected to the sodium hypochlorite finished product tank and the sodium hypochlorite circulation tank. The liquid inlet pipe connected to the sodium hypochlorite finished product tank is provided with a sodium hypochlorite finished product valve, and the liquid inlet pipe connected to the sodium hypochlorite circulation tank is provided with a sodium hypochlorite circulation valve. The first ORP detector, the second ORP detector, and the third ORP detector are interlocked with the sodium hypochlorite finished product valve and the sodium hypochlorite circulation valve respectively; the sodium hypochlorite circulation tank is also provided with a pH meter, and the connecting pipe between the sodium hypochlorite circulation tank and the alkali solution storage tank is provided with an alkali solution automatic regulating valve, and the pH meter is interlocked with the alkali solution automatic regulating valve.

[0007] As an improvement of the above technical solution, a filter is also provided on the chlorine pipeline.

[0008] As an improvement of the above technical solution, a chlorine regulating valve and a chlorine flow meter are provided on the chlorine pipeline.

[0009] As a preferred embodiment of the above technical solution, the heat exchanger is a plate heat exchanger, and the heat exchange medium inlet and the heat exchange medium outlet of the plate heat exchanger are respectively connected to the cooling water inlet pipe and the cooling water return pipe.

[0010] As an improvement of the above technical solution, a first temperature sensor and a second temperature sensor are respectively provided at the liquid inlet and the liquid outlet of the plate heat exchanger, and an inlet regulating valve and a return regulating valve are respectively provided on the cooling water inlet pipe and the cooling water return pipe, and the first temperature sensor and the second temperature sensor are respectively interlocked with the inlet regulating valve and the return regulating valve.

[0011] As an improvement of the above technical solution, the lower parts of the first reaction tower, the second reaction tower and the tail gas absorption tower are all provided with porous gas distribution plates.

[0012] As an improvement of the above technical solution, a hollow spoiler disk is further provided below the porous air distribution disk, the air outlet of the air inlet pipe extends into the inner cavity of the hollow spoiler disk, and a plurality of gas outlets are provided on the side wall of the hollow spoiler disk; a hollow cylinder is rotatably provided in the inner cavity of the hollow spoiler disk, one end of the hollow cylinder is rotatably connected to the porous air distribution disk and a plurality of spoiler rods are circumferentially provided that are against the bottom of the porous air distribution disk.

[0013] As an improvement of the above technical solution, a gas detector is provided at the air outlet at the top of the exhaust gas absorption tower, an exhaust gas circulation valve is provided on the connecting pipe between the exhaust gas absorption tower outlet and the air inlet of the second absorption tower, and an exhaust gas emission valve is provided on the exhaust pipe of the exhaust gas absorption tower outlet, and the gas detector is interlocked with the exhaust gas circulation valve and the exhaust gas emission valve respectively.

[0014] As an improvement of the above technical solution, an induced draft fan is provided on the exhaust duct of the tail gas absorption tower.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model provides a continuous production device of sodium hypochlorite, comprising a first reaction tower, a second reaction tower, a tail gas absorption tower, a sodium hypochlorite finished product tank, a sodium hypochlorite circulation tank and an alkali solution storage tank; the first reaction tower is connected with a chlorine pipeline, chlorine enters from the first reaction tower, and chlorine that is not absorbed by the reaction enters the second reaction tower and the tail gas absorption tower in turn for re-absorption treatment, thereby greatly improving the utilization rate of chlorine and preventing chlorine from escaping and polluting the atmosphere.

[0017] The liquid inlets of the first reaction tower, the second reaction tower and the tail gas absorption tower of the device are connected with the sodium hypochlorite circulation tank through a heat exchanger, and the liquid outlet pipes of the first reaction tower, the second reaction tower and the tail gas absorption tower are connected with the sodium hypochlorite finished product tank and the sodium hypochlorite circulation tank through a first ORP detector, a second ORP detector and a third ORP detector respectively, a sodium hypochlorite finished product valve is arranged on the liquid inlet pipe connected with the sodium hypochlorite finished product tank, a sodium hypochlorite circulation valve is arranged on the liquid inlet pipe connected with the sodium hypochlorite circulation tank, and the first ORP detector, the second ORP detector and the third ORP detector are interlocked with the sodium hypochlorite finished product valve and the sodium hypochlorite circulation valve respectively; the above arrangement can monitor the ORP value of the reaction liquid in real time to prevent the oversaturation of the sodium hypochlorite solution from affecting the quality of the product.

[0018] The device also has a pH meter on the sodium hypochlorite circulation tank, and an alkali solution automatic regulating valve is provided on the connecting pipe between the sodium hypochlorite circulation tank and the alkali solution storage tank. The pH meter is interlocked with the alkali solution automatic regulating valve. The above arrangement can monitor the pH value of the sodium hypochlorite circulation liquid in real time to prevent the pH value of the sodium hypochlorite circulation liquid from being too low, thereby affecting the quality of the finished sodium hypochlorite product.

[0019] The first temperature sensor and the second temperature sensor are respectively provided at the liquid inlet and the liquid outlet of the heat exchanger of the device, and the cooling water inlet pipe and the cooling water return pipe are respectively provided with a water inlet regulating valve and a water return regulating valve, and the first temperature sensor and the second temperature sensor are respectively interlocked with the water inlet regulating valve and the water return regulating valve. The above settings can monitor the temperature of the inlet and outlet of the heat exchanger in real time, prevent the temperature of the sodium hypochlorite solution from being too high, causing the decomposition of the sodium hypochlorite, and reduce the effective chlorine content of the sodium hypochlorite solution.

[0020] The first reaction tower, the second reaction tower and the tail gas absorption tower of the device are all provided with porous air distribution disks at the bottom; a hollow spoiler disk is also provided below the porous air distribution disk, the gas outlet of the air inlet pipe extends into the inner cavity of the hollow spoiler disk, and a plurality of gas outlets are provided on the side wall of the hollow spoiler disk; a hollow cylinder is rotatably provided in the inner cavity of the hollow spoiler disk, and spoiler blades are circumferentially provided on the hollow cylinder, one end of the hollow cylinder is rotatably connected to the porous air distribution disk and a plurality of spoiler rods are circumferentially provided to abut against the bottom of the porous air distribution disk. The above arrangement improves the uniformity of gas distribution, enables the gas to fully contact with the absorption liquid, and greatly improves the production efficiency of the product.

[0021] A gas detector is provided at the gas outlet at the top of the tail gas absorption tower of the device, a tail gas circulation valve is provided on the connecting pipe between the tail gas absorption tower outlet and the second absorption tower inlet, a tail gas discharge valve is provided on the exhaust pipe at the tail gas absorption tower outlet, and the gas detector is interlocked with the tail gas circulation valve and the tail gas discharge valve. The above settings can effectively ensure that chlorine is fully absorbed, which improves the utilization rate of chlorine on the one hand and prevents chlorine from polluting the atmosphere on the other. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0024] Figure 2 is a schematic diagram of the connection between the porous air distribution disk and the hollow spoiler disk in Example 1;

[0025] In the figure, 1, the first reaction tower; 2, the second reaction tower; 3, the tail gas absorption tower; 4, the sodium hypochlorite finished product tank; 5, the sodium hypochlorite circulation tank; 6, the alkali solution storage tank; 7, the chlorine pipeline; 8, the chlorine regulating valve; 9, the chlorine flow meter; 10, the filter; 11, the heat exchanger; 12, the cooling water inlet pipe; 13, the cooling water return pipe; 14, the first temperature sensor; 15, the second temperature sensor; 16, the water inlet regulating valve; 17, the return water regulating valve; 18, the first ORP detector Detector; 19. Second ORP detector; 20. Third ORP detector; 21. Sodium hypochlorite finished product valve; 22. Sodium hypochlorite circulation valve; 23. pH meter; 24. Alkali solution automatic regulating valve; 25. Porous air distribution disk; 26. Hollow spoiler disk; 27. Inlet pipe; 28. Gas outlet; 29. ​​Hollow cylinder; 30. Spoiler blade; 31. Spoiler rod; 32. Gas detector; 33. Exhaust gas circulation valve; 34. Exhaust gas discharge valve; 35. induced draft fan. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown, a continuous production device of sodium hypochlorite includes a first reaction tower 1, a second reaction tower 2, a tail gas absorption tower 3, a sodium hypochlorite finished product tank 4, a sodium hypochlorite circulation tank 5 and an alkali solution storage tank 6; the first reaction tower 1 is connected to a chlorine pipeline 7, and a chlorine regulating valve 8 and a chlorine flowmeter 9 are provided on the chlorine pipeline 7. Further, a filter 10 is also provided on the chlorine pipeline 7. The filter 10 can effectively filter the chlorine in the chlorine pipeline 7 to prevent the chlorine from carrying impurities, and the impurities enter the sodium hypochlorite solution to affect the quality of the sodium hypochlorite solution. The flow rate of the chlorine can be effectively adjusted by the chlorine regulating valve 8 and the chlorine flowmeter 9.

[0031] In this embodiment, the gas outlet of the first reaction tower 1 is connected to the gas inlet of the second reaction tower 2, and the gas outlet of the second reaction tower 2 is connected to the gas inlet of the tail gas absorption tower 3; the liquid inlets of the first reaction tower 1, the second reaction tower 2, and the tail gas absorption tower 3 are connected to the sodium hypochlorite circulation tank 5 through the heat exchanger 11, and the heat exchanger 11 is a plate heat exchanger, and the heat exchange medium inlet and the heat exchange medium outlet of the plate heat exchanger are respectively connected to the cooling water inlet pipe 12 and the cooling water return pipe 13. In this device, chlorine gas and alkali solution are in countercurrent contact, so that chlorine gas and alkali solution are fully contacted, chlorine gas that is not completely absorbed in the first reaction tower 1 enters the second reaction tower 2 for treatment, and tail gas discharged from the second reaction tower 2 enters the tail gas absorption tower 3 for absorption treatment, ensuring that chlorine gas is fully absorbed, and this device also cools the sodium hypochlorite circulating liquid through the plate heat exchanger to prevent the temperature from being too high, causing the decomposition of the sodium hypochlorite solution, and affecting the effective chlorine content of the sodium hypochlorite solution.

[0032] Furthermore, the liquid inlet and the liquid outlet of the plate heat exchanger are respectively provided with a first temperature sensor 14 and a second temperature sensor 15, and the cooling water inlet pipe 12 and the cooling water return pipe 13 are respectively provided with an inlet regulating valve 16 and a return regulating valve 17, and the first temperature sensor 14 and the second temperature sensor 15 are respectively interlocked with the inlet regulating valve 16 and the return regulating valve 17. The first temperature sensor 14 and the second temperature sensor 15 can respectively monitor the temperature of the liquid entering the plate heat exchanger and the liquid exiting the plate heat exchanger in real time. If the temperature of the liquid entering the plate heat exchanger and the liquid exiting the plate heat exchanger exceeds the set range, the signal is transmitted to the external control system (not shown in the figure), and the external control system automatically opens the inlet regulating valve 16 and the return regulating valve 17, increases the flow rate of the heat exchange medium in the plate heat exchanger 11, and then improves the heat exchange effect, thereby effectively cooling the sodium hypochlorite circulating liquid and improving the production efficiency of the sodium hypochlorite solution.

[0033] In this embodiment, the liquid outlet pipes of the first reaction tower 1, the second reaction tower 2, and the tail gas absorption tower 3 are connected to the sodium hypochlorite finished product tank 4 and the sodium hypochlorite circulation tank 5 through the first ORP detector 18, the second ORP detector 19, and the third ORP detector 20, respectively. A sodium hypochlorite finished product valve 21 is provided on the liquid inlet pipe connected to the sodium hypochlorite finished product tank 4, and a sodium hypochlorite circulation valve 22 is provided on the liquid inlet pipe connected to the sodium hypochlorite circulation tank 5. The first ORP detector 18, the second ORP detector 19, and the third ORP detector 20 are interlocked with the sodium hypochlorite finished product valve 21 and the sodium hypochlorite circulation valve 22, respectively; the sodium hypochlorite circulation tank 5 is also provided with a pH meter 23, and an alkali liquid automatic regulating valve 24 is provided on the connecting pipe between the sodium hypochlorite circulation tank 5 and the alkali liquid storage tank 6, and the pH meter 23 is interlocked with the alkali liquid automatic regulating valve 24.

[0034] Through the above arrangement, the first ORP detector 18, the second ORP detector 19 and the third ORP detector 20 can monitor the ORP values ​​of the effluents of the first reaction tower 1, the second reaction tower 2 and the tail gas absorption tower 3 in real time, and feed back the measured ORP values ​​to the external control system in time. If the ORP value is less than the set range, the external control system controls the sodium hypochlorite circulation valve 22 to be opened, and the effluent enters the sodium hypochlorite circulation tank 5 to continue to absorb chlorine. If the ORP value reaches the set range (qualified), the external control system controls the sodium hypochlorite finished product valve 21, and the sodium hypochlorite solution enters the sodium hypochlorite finished product tank 4, which greatly ensures the quality of the sodium hypochlorite solution. The device also monitors the pH value of the sodium hypochlorite circulating liquid in the sodium hypochlorite circulating tank 5 in real time through the pH meter 23, and feeds back the measured pH value to the external control system in a timely manner. If the pH value is lower than the set range, the alkali solution automatic regulating valve 24 is opened to increase the flow rate of the alkali solution, thereby adjusting the pH value of the sodium hypochlorite circulating liquid in real time, further ensuring the quality and production efficiency of the sodium hypochlorite solution.

[0035] In this embodiment, the first reaction tower 1, the second reaction tower 2, and the tail gas absorption tower 3 are all provided with a porous gas distribution plate 25 at the bottom. The porous gas distribution plate 25 allows the gas to evenly enter the first reaction tower 1, the second reaction tower 2, and the tail gas absorption tower 3 and fully contact with the sodium hypochlorite circulating liquid, greatly improving the production efficiency of the product.

[0036] Furthermore, a hollow spoiler disk 26 is provided below the porous air distribution disk 25, the air outlet of the air inlet pipe 27 extends into the inner cavity of the hollow spoiler disk 26, and a plurality of gas outlets 28 are provided on the side wall of the hollow spoiler disk 26; a hollow cylinder 29 is rotatably provided in the inner cavity of the hollow spoiler disk 26, and spoiler blades 30 are provided circumferentially of the hollow cylinder 29, one end of the hollow cylinder 29 is rotatably connected to the porous air distribution disk 25 and a plurality of spoiler rods 31 are also circumferentially provided that abut against the bottom of the porous air distribution disk 25.

[0037] Through the above arrangement, the gas enters the inner cavity of the hollow spoiler disk 26 through the air inlet pipe 27 and is discharged through the gas outlet 28 on the side wall of the hollow spoiler disk 26. The spoiler blades 30 rotate under the impact of the gas, thereby driving the hollow cylinder 29 to rotate, and then driving the spoiler rod 31 to rotate. The rotating spoiler rod 31 disturbs the rising gas, thereby achieving uniform distribution of the gas, thereby improving the absorption efficiency of chlorine.

[0038] In this embodiment, a gas detector 32 is provided at the gas outlet of the top of the tail gas absorption tower 3, a tail gas circulation valve 33 is provided on the connecting pipe between the tail gas absorption tower 3 outlet and the second absorption tower inlet, a tail gas discharge valve 34 is provided on the exhaust pipe of the tail gas absorption tower 3 outlet, and the gas detector 32 is interlocked with the tail gas circulation valve 33 and the tail gas discharge valve 34 respectively; and a draft fan 35 is provided on the exhaust pipe of the tail gas absorption tower 3. The gas detector 32 can detect the gas concentration discharged from the tail gas absorption tower 3, and feed back the detected information to the external control system. If the chlorine concentration in the tail gas is higher than the set value, the tail gas circulation valve 33 is opened, and the tail gas enters the second absorption tower for a new round of absorption treatment. If the chlorine concentration in the tail gas is qualified, the tail gas discharge valve 34 is opened, and the tail gas is discharged into the atmosphere under the action of the draft fan 35. The above arrangement not only improves the utilization rate of chlorine, but also effectively prevents chlorine from polluting the atmosphere.

[0039] In addition, it should be understood that after reading the contents taught in the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A continuous production device for sodium hypochlorite, characterized in that: The invention comprises a first reaction tower, a second reaction tower, a tail gas absorption tower, a sodium hypochlorite finished product tank, a sodium hypochlorite circulation tank and an alkali liquid storage tank; the first reaction tower is connected to a chlorine pipeline, the gas outlet of the first reaction tower is connected to the gas inlet of the second reaction tower, and the gas outlet of the second reaction tower is connected to the gas inlet of the tail gas absorption tower; the liquid inlets of the first reaction tower, the second reaction tower and the tail gas absorption tower are connected to the sodium hypochlorite circulation tank through a heat exchanger, and the liquid outlet pipelines of the first reaction tower, the second reaction tower and the tail gas absorption tower are connected to the sodium hypochlorite circulation tank through a first ORP detector, a second ORP detector and a third ORP detector respectively. The ORP detector is connected to the sodium hypochlorite finished product tank and the sodium hypochlorite circulation tank. The liquid inlet pipe of the sodium hypochlorite finished product tank is provided with a sodium hypochlorite finished product valve, and the liquid inlet pipe of the sodium hypochlorite circulation tank is provided with a sodium hypochlorite circulation valve. The first ORP detector, the second ORP detector, and the third ORP detector are interlocked with the sodium hypochlorite finished product valve and the sodium hypochlorite circulation valve respectively; the sodium hypochlorite circulation tank is also provided with a pH meter, and the connecting pipe between the sodium hypochlorite circulation tank and the alkali solution storage tank is provided with an alkali solution automatic regulating valve, and the pH meter is interlocked with the alkali solution automatic regulating valve.

2. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: The chlorine pipeline is also provided with a filter.

3. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: The chlorine pipeline is provided with a chlorine regulating valve and a chlorine flow meter.

4. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: The heat exchanger is a plate type heat exchanger, and the heat exchange medium inlet and the heat exchange medium outlet of the plate type heat exchanger are respectively connected to the cooling water inlet pipe and the cooling water return pipe.

5. A continuous production device for sodium hypochlorite according to claim 4, characterized in that: The liquid inlet and the liquid outlet of the plate heat exchanger are respectively provided with a first temperature sensor and a second temperature sensor, the cooling water inlet pipe and the cooling water return pipe are respectively provided with an inlet regulating valve and a return regulating valve, and the first temperature sensor and the second temperature sensor are respectively interlocked with the inlet regulating valve and the return regulating valve.

6. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: The lower parts of the first reaction tower, the second reaction tower and the tail gas absorption tower are all provided with porous gas distribution plates.

7. A continuous production device for sodium hypochlorite according to claim 6, characterized in that: A hollow spoiler disk is also provided below the porous air distribution disk, and the air outlet of the air inlet pipe extends into the inner cavity of the hollow spoiler disk, and a plurality of air outlets are provided on the side wall of the hollow spoiler disk; a hollow cylinder is rotatably provided in the inner cavity of the hollow spoiler disk, and spoiler blades are circumferentially provided on the hollow cylinder, one end of the hollow cylinder is rotatably connected to the porous air distribution disk and a plurality of spoiler rods are circumferentially provided that abut against the bottom of the porous air distribution disk.

8. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: A gas detector is provided at the air outlet at the top of the exhaust gas absorption tower, an exhaust gas circulation valve is provided on the connecting pipe between the exhaust gas absorption tower outlet and the air inlet of the second absorption tower, and an exhaust gas emission valve is provided on the exhaust pipe of the exhaust gas absorption tower outlet, and the gas detector is interlocked with the exhaust gas circulation valve and the exhaust gas emission valve respectively.

9. A continuous production device for sodium hypochlorite according to claim 1, characterized in that: An induced draft fan is provided on the exhaust duct of the tail gas absorption tower.

Images