A high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device

Abstract

The present application relates to a kind of high-risk chlorine medium leakage in situ adaptive emergency disposal device.The device is used for the negative pressure collection component for trapping high-risk chlorine medium, with the venturi washing component for high-risk chlorine medium decontamination communicated with negative pressure collection component, with the main and auxiliary cyclone separation component for reinforcing separation communicated with venturi washing component, with the bubble cap spray component for intercepting residual high-risk chlorine medium communicated with main and auxiliary cyclone separation component, with the storage and recovery component for decontamination liquid storage and waste liquid recovery communicated with venturi washing component and bubble cap spray component, and shell component composition;Through the multi-dimensional coupling of atomization decontamination and main and auxiliary cyclone separation, high-risk chlorine medium leaked in air can be effectively removed, the processing range is 0-100%, with high degree of integration, mobile, adaptive strong and other characteristics, can realize the in situ emergency disposal of high-risk chlorine medium sudden leakage, can replace the passive disposal means of centralized processing plus spraying absorption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emergency treatment of hazardous chemicals, and particularly relates to a high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device. TECHNICAL BACKGROUND

[0002] Chlor-alkali chemical industry is mainly composed of electrolytic salt and chloroethylene synthesis, and accidents of chlor-alkali chemical industry occur frequently and have serious consequences. The corrosion and leakage of production equipment are one of the main causes of accidents.

[0003] The traditional and conventional methods for efficient emergency disposal of high-risk chlorine medium currently include synthetic hydrochloric acid method, solvent absorption method, production liquid chlorine method, lye absorption method and separation and recovery of chlorine method, etc. However, there are generally problems such as difficulty in capturing gas medium, high cost and large consumption of ex-situ disposal, heavy equipment, poor flexibility, low absorption efficiency, insufficient treatment capacity and the like, which are difficult to meet the requirements of in-situ efficient emergency disposal of high-risk chlorine medium leakage.

[0004] Chinese invention patent (CN114796569A) discloses a hazardous chemical decontamination emergency treatment device. The present application makes the pressure in the liquid collection assembly higher than the pressure outside the world by running the first pneumatic diaphragm pump, and the liquid hazardous chemical leakage is sucked into the liquid collection assembly by the absorption disc head for decontamination. The liquid collection assembly is communicated with the medicament ejection assembly, so that the pressure in the medicament ejection assembly is higher than the pressure outside the world. After storing the decontamination agent in the medicament ejection assembly, the medicament ejection assembly is communicated with the first atomizing nozzle, and the decontamination agent is atomized and sprayed out through the first atomizing nozzle to decontaminate the gaseous hazardous chemical leakage outside. The adjustment control assembly controls the device, so as to simultaneously treat the liquid hazardous chemical leakage and the gaseous hazardous chemical leakage. However, the device cannot recycle the sprayed decontamination agent when treating the gaseous hazardous chemical outside, which is easy to cause secondary pollution. In addition, in the case of large variation of leakage amount, the treatment of gaseous hazardous chemical outside cannot be completely guaranteed.

[0005] Chinese invention patent (CN110152472B) authorizes a centralized collection and disposal system for leaked chlorine gas. The present application collects the leaked high-risk chlorine medium through the accident treatment room and the accident fan, absorbs the leaked high-risk chlorine medium through the two-stage lye absorption tower in series, and realizes the collection and disposal of the leaked chlorine gas by cooperating with the lye circulating device. However, the disposal system is heavy in equipment, and can only be used for the leakage of liquid chlorine steel cylinder during the vaporization process due to the failure of the bottle body structure, and cannot deal with the chlorine leakage of production equipment in chlor-alkali chemical enterprises. In addition, the device of the system occupies a large area and has high investment cost.

[0006] Therefore, the traditional passive disposal device using ex-situ lye spraying absorption cannot meet the requirements of in-situ efficient emergency disposal of high-risk chlorine medium leakage in domestic chlor-alkali chemical enterprises. It is necessary to develop a new disposal method and device to solve the above technical defects in the prior art. SUMMARY

[0007] The present application aims at the problems of existing ectopic alkali liquor spraying absorption disposal device system, such as difficult gas medium capture, high ectopic disposal cost, large consumption, heavy equipment, poor flexibility, low absorption efficiency, insufficient processing capacity, etc., and provides a new type of high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device, which has the advantages of strong self-adaptive regulation and control capacity, high in-situ disposal efficiency, compact structure, large processing capacity, small environmental impact, etc.

[0008] Invention idea

[0009] The present application focuses on the emergency disposal problem of early leakage of high-risk chlorine medium of chlor-alkali chemical production equipment, and through the study of the correlation mechanism of turbulent flow transmission and micro-interface interfacial mass transfer reaction in the high-risk chlorine medium leakage disposal process, develops a chlorine medium leakage efficient self-adaptive emergency disposal technology and equipment based on the atomization decontamination-cyclone separation coupling principle to realize efficient, in-situ, self-adaptive emergency disposal of high-risk chlorine medium. Specifically:

[0010] 1. A negative pressure air flow is formed in the collector air duct by a negative pressure fan, and the leaked high-risk chlorine medium is sucked into the collector horn along the negative pressure air flow. The whole device is equipped with moving wheels to enter the accident site, realizing in-situ collection of high-risk chlorine medium. The decontamination liquid is transported by the centrifugal pump and broken into atomized droplets by the pressure atomization of the washing nozzle. The high-risk chlorine medium and air collected are mixed in the venturi washing pipe, and the decontamination reaction begins; the atomized droplets pass through the venturi washing pipe, and due to the acceleration effect of the venturi pipe, the gas velocity in the pipe increases, the shear force on the surface of the atomized droplets increases, the atomized droplets are broken again, and the small droplets are broken into smaller droplets, which increases the specific surface area of the small droplets and is beneficial to the capture of high-risk chlorine medium; the small droplets and high-risk chlorine medium continuously react in the throat pipe section and the gradually expanding section until the high-risk chlorine medium is completely reacted or enters the main cavity cyclone through the pipe.

[0011] 2. The gas-liquid two-phase fluid composed of residual high-risk chlorine medium, air and decontamination liquid enters the main cavity cyclone through the pipeline from the bottom inlet. The presence of guide vanes forces the gas-liquid two-phase fluid to rotate forcibly. Small droplets with small particle size collide and coalesce in the cyclone field to become droplets with large particle size. Due to the difference in density and size, the gas-liquid two-phase has different dynamic characteristics under the coupling action of the cyclone field and the gravity field, and is endowed with different migration speed and displacement. The liquid phase with large density is transferred to the peripheral wall of the cyclone by a large centrifugal force, is separated from the two-phase fluid, and realizes the cyclone separation of gas and liquid. When the collected high-risk chlorine medium has low concentration, the washing nozzle has small spraying amount of decontamination liquid, and the cyclone separation treatment capacity is small, the gas-liquid separation capacity of the main cavity cyclone can meet the requirements. The separated gas phase enters the bubble cap spray assembly through the overflow pipe of the main cavity cyclone. When the collected high-risk chlorine medium has high concentration, the washing nozzle has large spraying amount of decontamination liquid, and the cyclone separation treatment capacity is large, the gas-liquid two-phase fluid will increase the liquid content and enter the secondary cavity cyclone through the hole on the wall of the main cavity cyclone. The gas-liquid two-phase flows into the secondary cavity cyclone through the tangential inlet. The cyclone assembly with inverted conical structure forces the gas-liquid two-phase fluid to rotate strongly. By means of the large centrifugal force generated by the density difference between gas and liquid, the liquid phase is transferred to the peripheral inner wall of the cyclone and flows out from the underflow port along the peripheral inner wall into the waste liquid tank. The separated gas phase enters the bubble cap spray assembly through the overflow pipe of the secondary cavity cyclone. By means of the arrangement of multiple secondary cavity cyclones, the disposal of high-risk chlorine medium with different concentrations is met. The main cavity acts as a buffer zone and also as a place for secondary mixing of gas and liquid, avoiding the insufficient decontamination caused by the improper matching of the flow rates of high-risk chlorine medium and decontamination liquid in the Venturi atomization, and realizing the self-adaptive regulation and control ability of the emergency treatment of high-risk chlorine medium.

[0012] 3. The separated gas phase enters the bubble cap through the overflow pipe of the main cavity cyclone and the overflow pipe of the secondary cavity cyclone. In order to ensure that the residual high-risk chlorine medium is completely decontaminated, the decontamination liquid is sprayed from the spray head to form a liquid film on the bubble cap, and the residual high-risk chlorine medium is further treated. Finally, the purified air without high-risk chlorine medium is discharged from the upper end of the spray cover.

[0013] In summary, the high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device can realize efficient, in-situ and self-adaptive emergency disposal of high-risk chlorine medium.

[0014] The application is realized by the following technical solutions:

[0015] The application discloses a high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device, which is characterized by comprising a negative pressure collection component for collecting the leaked high-risk chlorine medium, a Venturi washing component in communication with the negative pressure collection component and used for washing the high-risk chlorine medium, a primary and secondary cyclone separation component in communication with the Venturi washing component and used for prolonging reaction and strengthening separation, a bubble cap spray component in communication with the primary and secondary cyclone separation component and used for intercepting residual high-risk chlorine medium, and a storage and recovery component in communication with the Venturi washing component and the bubble cap spray component and used for storing and recovering washing liquid.

[0016] The negative pressure collection component comprises a collector and a negative pressure fan, the Venturi washing component comprises a washing nozzle and a Venturi washing pipe, the collector is in communication with the negative pressure fan, the negative pressure fan is in communication with the washing nozzle, the washing nozzle is in communication with the Venturi washing pipe, and the washing nozzle is located behind the negative pressure fan and in front of the Venturi washing pipe.

[0017] The primary and secondary cyclone separation component comprises a primary cavity cyclone, a guide vane and a secondary cavity cyclone, wherein the primary cavity cyclone comprises a hollow primary cylinder segment, a primary cavity cyclone overflow pipe connected with the upper end of the primary cylinder segment and a hollow primary inverted cone in communication with the lower end of the primary cylinder segment, the guide vane is fixedly connected in the primary inverted cone; the secondary cavity cyclone comprises a tangential inlet connected with the primary cylinder segment of the primary cavity cyclone, a hollow secondary cylinder segment, a secondary cavity cyclone overflow pipe connected with the upper end of the secondary cylinder segment and a hollow secondary inverted cone in communication with the lower end of the secondary cylinder segment, the lower end of the secondary inverted cone is a underflow port, the secondary cavity cyclone is uniformly distributed around the axis of the primary cavity cyclone and is in communication with the square hole of the primary cylinder segment of the primary cavity cyclone through the tangential inlet.

[0018] The bubble cap spray component comprises a bubble cap, a spray head and a spray cover, the bubble cap is located above the overflow ports of the primary cavity cyclone and the secondary cavity cyclone, the bubble cap is coaxial with the primary cavity cyclone, the lower end of the bubble cap is connected with the primary cavity cyclone through a rib, the size of the bubble cap can accommodate all the overflow ports of the cyclones, the spray head is located directly above the bubble cap, and the spray head and the bubble cap are located in the spray cover.

[0019] The storage and recovery component comprises a storage tank, a waste liquid tank and a centrifugal pump, the storage tank is in communication with the centrifugal pump, is used for storing washing liquid required by spraying, the centrifugal pump is in communication with the washing nozzle and the spray head through pipelines and is used for conveying the washing liquid to the washing nozzle and the spray head, and the waste liquid tank is located below the secondary cavity cyclone and is in communication with the underflow port of the secondary cavity cyclone.

[0020] The shell component comprises a shell, a base and a moving wheel, the moving wheel is fixedly connected to the lower part of the base, the negative pressure fan, the primary cavity cyclone, the storage tank, the waste liquid tank and the centrifugal pump are fixedly connected to the upper part of the base, and the shell is connected with the base.

[0021] The Venturi washing pipe comprises an inlet pipe section, a tapered section, a throat pipe section and a diverging section, wherein the inlet pipe section is connected with the washing nozzle, the taper angle of the tapered section is in the range of 10-20°, the length-diameter ratio of the throat pipe section is 1.5-3.5, and the diverging angle of the diverging section is in the range of 8-12°.

[0022] The length-diameter ratio of the main cylindrical section of the main cavity cyclone is 1.5-3, 1-2 layers of square holes are uniformly arranged on the inner wall, the main inverted cone angle is 40-60°, the number of layers of the guide vane is 2-5, and the interval between adjacent vanes is 1 / 22-1 / 15 of the length of the main cylindrical section.

[0023] The number of the auxiliary cavity cyclones is 2-6, the diameter of the auxiliary cylindrical section is 1 / 3-2 / 3 of the diameter of the main cylindrical section, the length-diameter ratio is 1.5-3, and the main inverted cone angle is 8-15°.

[0024] The diameter of the bubble cap bottom should be greater than the sum of the diameter of the main cylindrical section and the diameter of the auxiliary cylindrical section, the bubble cap is spherical, the opening rate is 10-20%, and the opening diameter is 1-10 mm.

[0025] Beneficial effects

[0026] The present application realizes triple decontamination of the leaked high-risk chlorine medium through atomization and capture of the Venturi washing assembly, prolonged reaction of the main cavity cyclone and interception and capture of the bubble cap spraying assembly. Specifically:

[0027] 1. When the flow of the leaked high-risk chlorine medium is small, the droplets sprayed by the washing nozzle in the Venturi washing assembly are broken into small droplets through the atomization and fragmentation of the Venturi washing pipe, the specific surface area is increased, and the decontamination requirements of the leaked high-risk chlorine medium are met. The gas-liquid two-phase fluid is separated by the main cavity cyclone, the waste liquid enters the waste liquid tank by the auxiliary cavity cyclone, and the gas enters the bubble cap spraying assembly. Since the treatment requirements of the leaked chlorine medium have been met, the decontamination liquid sprayed by the spraying head in the bubble cap spraying assembly flows back to the storage tank through the pipeline for recycling.

[0028] 2. When the leakage of high-risk chlorine medium flow is moderate, the droplets sprayed by the washing nozzle in the Venturi washing assembly are broken into small droplets by the atomization and breaking of the Venturi washing pipe, the specific surface area is increased, but all the high-risk chlorine medium is not treated. The gas-liquid two-phase fluid composed of residual high-risk chlorine medium, air and washing liquid enters the main cavity cyclone through the pipeline from the bottom inlet. Due to the increase of flow, part of the washing liquid fails to enter the secondary cavity cyclone through the square hole, liquid retention is formed in the main cavity cyclone, the concentration of washing liquid is increased, the washing reaction time is prolonged, the residual chlorine medium is completely washed, and the washing requirement of the leakage of high-risk chlorine medium is met. The waste liquid enters the waste liquid tank from the secondary cavity cyclone, and the gas enters the bubble spray assembly. Since the treatment requirement of the leakage of chlorine medium has been met, the washing liquid sprayed by the spray head in the bubble spray assembly flows back to the storage tank through the pipeline for recycling.

[0029] 3. When the leakage of high-risk chlorine medium flow is moderate, the droplets sprayed by the washing nozzle in the Venturi washing assembly are broken into small droplets by the atomization and breaking of the Venturi washing pipe, the specific surface area is increased, but all the high-risk chlorine medium is not treated. The gas-liquid two-phase fluid composed of residual high-risk chlorine medium, air and washing liquid enters the main cavity cyclone through the pipeline from the bottom inlet. Due to the increase of flow, part of the washing liquid fails to enter the secondary cavity cyclone through the square hole, liquid retention is formed in the main cavity cyclone, the concentration of washing liquid is increased, the washing reaction time is prolonged, but there is still residual high-risk chlorine medium. The waste liquid enters the waste liquid tank from the secondary cavity cyclone, and the residual gas enters the bubble spray assembly. The washing liquid sprayed by the spray head in the bubble spray assembly forms a liquid film on the bubble, the residual chlorine medium reacts with the washing liquid when passing through the bubble liquid film, the residual chlorine medium is intercepted and captured, and finally the discharged gas does not contain high-risk chlorine medium.

[0030] The present application aims at the problem of in-situ efficient emergency disposal of high-risk chlorine medium leakage. Through exploring the correlation mechanism of turbulent flow, particle motion and chlorine medium transfer in the washing process of high-risk chlorine medium, the reaction and regulation mechanism of high-risk chlorine medium atomization washing, the separation mechanism of multi-stage cyclone coupling strengthening, a high-risk chlorine medium atomization washing-cyclone separation model is established, a high-risk chlorine medium atomization washing-cyclone separation coupling technology is developed, and an in-situ, efficient and self-adaptive integrated equipment for emergency disposal of high-risk chlorine medium is developed, realizing in-situ efficient emergency disposal of typical high-risk chlorine medium leakage. Compared with the prior art, the needs of chlor-alkali chemical enterprises for in-situ efficient emergency disposal of high-risk chlorine medium leakage are met, and the emergency disposal capacity of chlor-alkali chemical high-risk chlorine medium is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain the principles of the present application.

[0032] In the drawings, the parts are not necessarily drawn to scale.

[0033] Figure 1 Figure 1 is a schematic diagram of the principle of the device of the present application.

[0034] Figure 2(a) is a schematic diagram of the structure of the device of the present application, Figure 2(b) is a schematic diagram of the structure of the device of the present application after the shell is cut open, and Figure 2(c) is a sectional view of the internal structure of the device of the present application.

[0035] In the figure, the reference numerals represent the following components and devices, 1: negative pressure collection component, 11: collector, 12: negative pressure fan, 2: Venturi washing component, 21: washing nozzle, 22: Venturi washing pipe, 3: main and auxiliary cyclone separation component, 31: main cavity cyclone, 32: guide blade, 33: auxiliary cavity cyclone, 4: bubble cap spray component, 41: bubble cap, 42: spray head, 43: spray cover, 5: storage and recovery component, 51: storage tank, 52: waste liquid tank, 53: centrifugal pump, 6: shell component, 61: shell, 62: base, 63: moving wheel.

[0036] Figure 3 Figure 3 is a sectional view of the structure size of the Venturi washing pipe of the device of the present application.

[0037] In the figure, the reference numerals represent the following components and devices, 221: inlet pipe section, 222: converging section, 223: throat section, 224: diverging section, 21: washing nozzle.

[0038] Figure 4 Figure 4 is a schematic diagram of the structure of the main and auxiliary cyclone separation component of the device of the present application.

[0039] In the figure, the reference numerals represent the following components and devices, 31: main cavity cyclone, 33: auxiliary cavity cyclone.

[0040] Figure 5 Figure 5 is a sectional view of the structure size of the main cavity cyclone of the device of the present application.

[0041] In the figure, the reference numerals represent the following components and devices, 312: main cylindrical section, 311: overflow pipe of the main cavity cyclone, 313: hollow main inverted cone, 32: guide blade.

[0042] Figure 6 Figure 6 is a sectional view of the structure size of the auxiliary cavity cyclone of the device of the present application.

[0043] In the figure, the reference numerals represent the following components and devices, 331: tangential inlet connected to the main cylindrical section of the main cavity cyclone, 332: auxiliary cylindrical section, 333: overflow pipe of the auxiliary cavity cyclone, 334: hollow auxiliary inverted cone.

[0044] Figure 7(a) is a top view of the bubble cap of the device of the present application, and Figure 7(b) is a schematic diagram of the structure size of the bubble cap of the device of the present application. DETAILED DESCRIPTION

[0045] The application will be further described below in connection with the drawings and specific examples. However, it should be understood that these examples are only used to illustrate the application and do not constitute a limitation on the scope of the application. In the following examples, the test methods not specified are generally carried out under conventional conditions or under the conditions recommended by the manufacturer. Unless otherwise specified, all percentages and parts are by weight.

[0046] Example 1

[0047] In the laboratory, the high-risk chlorine medium leakage situation was simulated and the leaked chlorine was treated by the device of the application. The total gas flow was 8 m 3 / h, and a set of experiments was carried out every 10% from 0% to 100% of the chlorine volume ratio. The decontamination solution was 0.1 mol / L sodium hydroxide solution.

[0048] Design parameters: the device of the application was assembled according to Fig. 2(c), wherein the taper angle α1 of the taper section was 12°, the length-diameter ratio L1 / D1 of the throat section was 2.8, D1=35 mm, the taper angle β1 of the diverging section was 9°, 2 layers of square holes were uniformly arranged on the inner wall of the main cylindrical section, the length-diameter ratio L2 / D2 of the main cylindrical section was 1.9, D2=200 mm, the cone angle α2 of the main inverted cone was 50°, the guide vanes were fixedly connected in the main inverted cone, the number of layers of the guide vanes was 4, the interval between adjacent vanes was 1 / 20 of the length of the main cylindrical section, the number of the secondary cavity cyclones N was 2, the diameter D3 of the secondary cylindrical section was 5 / 13 of the diameter D2 of the main cylindrical section, the length-diameter ratio L3 / D3 was 2, the cone angle α3 of the main inverted cone was 8°-15°, the diameter D4 of the bottom of the bubble cap was greater than the sum of the diameter D2 of the main cylindrical section and the diameter D3 of the main cylindrical section, the bubble cap was spherical, the opening rate was 20%, and the opening diameter Φ was 10 mm.

[0049] Application effect: after being treated by the device of the application, the chlorine mass concentration of the final exhaust gas of each set of experiments was less than 0.8 mg / m 3 , reaching the environmental protection emission standard requirement of GB 11984-2008.

[0050] Example 2

[0051] In the laboratory, an amplification experiment was carried out, the high-risk chlorine medium leakage situation was simulated, and the leaked chlorine was treated by the device of the application. The total gas flow was 200 m 3 / h, a set of experiments was carried out every 20% from 0% to 100% of the chlorine volume ratio, and the decontamination solution was 0.1 mol / L sodium hydroxide solution.

[0052] Design parameters: Assemble the device of the present invention as shown in Figure 2(c), wherein the contraction angle α1 of the tapering section is 12°, the length-to-diameter ratio L1 / D1 of the throat section is 2.8, D1 = 70mm, the expansion angle β1 of the expanding section is 9°, two layers of square holes are evenly opened on the inner wall of the main cylindrical section, the length-to-diameter ratio L2 / D2 of the main cylindrical section is 1.9, D2 = 400mm, the cone angle α2 of the main inverted cone is 50°, and the guide vanes are fixedly connected to the main inverted cone. The blade has 4 layers, with the spacing between adjacent blades being 1 / 20 of the length of the main cylindrical section. The number of secondary cyclones N is 4. The diameter D3 of the secondary cylindrical section is 5 / 13 of the diameter D2 of the main cylindrical section, and the length-to-diameter ratio L3 / D3 is 2. The cone angle α3 of the main inverted cone is 8° to 15°. The bottom diameter D4 of the bubble cap is greater than the sum of the diameters D2 and D3 of the main cylindrical section. The bubble cap is spherical with an opening ratio of 20% and an opening diameter Φ of 10mm.

[0053] Application effect: After being treated by the device described in this invention, the final emission gas of each group of experiments contained less than 0.8 mg / m3 of chlorine, which meets the requirements of the GB 11984-2008 environmental protection emission standard.

[0054] Example 3:

[0055] A chlor-alkali chemical plant in Inner Mongolia Autonomous Region used the device described in this invention to treat a leak of highly hazardous chlorine gas in a pipeline, with a total gas flow rate of 500 m³ / s. 3 The concentration of chlorine gas is approximately 54% by volume, and the decontamination solution used is a 0.1 mol / L sodium hydroxide solution.

[0056] Design parameters: Assemble the device of the present invention as shown in Figure 2(c), wherein the convergence angle α1 of the tapering section is 12°, the length-to-diameter ratio L1 / D1 of the throat section is 2.8, D1 = 90mm, the expansion angle β1 of the expanding section is 9°, two layers of square holes are evenly opened on the inner wall of the main cylindrical section, the length-to-diameter ratio L2 / D2 of the main cylindrical section is 1.9, D2 = 600mm, the cone angle α2 of the main inverted cone is 50°, and the guide vanes are fixedly connected to the main inverted cone. The blades have 4 layers, with the spacing between adjacent blades being 1 / 20 of the length of the main cylindrical section. The number of secondary cyclones N is 4. The diameter of the secondary cylindrical section D3 is 5 / 13 of the diameter of the main cylindrical section D2, and the length-to-diameter ratio L3 / D3 is 2. The cone angle α3 of the main inverted cone is 8° to 15°. The bottom diameter D4 of the bubble cap is greater than the sum of the diameters D2 and D3 of the main cylindrical section. The bubble cap is spherical with an opening ratio of 20% and an opening diameter Φ of 10mm.

[0057] Application results: After treatment by the device described in this invention, the leakage recovery rate reaches 96%, the system pressure drop is 4 kPa, the chlorine decontamination efficiency is 99%, the gas-liquid separation efficiency is 93%, and the final emission gas contains chlorine at a mass concentration of 0.8 mg / m3, meeting the requirements of the GB 11984-2008 environmental emission standard.

Claims

1. A high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device, characterized in that: The device comprises a negative pressure collection component for capturing the high-risk leakage chlorine medium, a Venturi washing component in communication with the negative pressure collection component for washing the high-risk chlorine medium, a primary and secondary cyclone separation component in communication with the Venturi washing component for prolonging the reaction and strengthening the separation, a bubble cap spray component in communication with the primary and secondary cyclone separation component for intercepting the residual high-risk chlorine medium, a storage and recovery component in communication with the Venturi washing component and the bubble cap spray component for storing and recovering the washing liquid. The negative pressure collection component comprises a collector and a negative pressure fan, the Venturi washing component comprises a washing nozzle and a Venturi washing pipe, the collector is in communication with the negative pressure fan, the negative pressure fan is in communication with the washing nozzle, the washing nozzle is in communication with the Venturi washing pipe, and the washing nozzle is located behind the negative pressure fan and in front of the Venturi washing pipe. The primary and secondary cyclone separation component comprises a primary cavity cyclone, a guide vane and a secondary cavity cyclone, wherein the primary cavity cyclone comprises a hollow primary cylinder segment, a primary cavity cyclone overflow pipe connected with the upper end of the primary cylinder segment and a hollow primary inverted cone in communication with the lower end of the primary cylinder segment, the guide vane is fixedly connected in the primary inverted cone; the secondary cavity cyclone comprises a tangential inlet connected with the primary cylinder segment of the primary cavity cyclone, a hollow secondary cylinder segment, a secondary cavity cyclone overflow pipe connected with the upper end of the secondary cylinder segment, a hollow secondary inverted cone in communication with the lower end of the secondary cylinder segment, and a bottom flow port at the lower end of the secondary inverted cone; the secondary cavity cyclone is uniformly distributed around the axis of the primary cavity cyclone and is in communication with the square hole of the primary cylinder segment of the primary cavity cyclone through the tangential inlet. The bubble cap spray component comprises a bubble cap, a spray head and a spray cover, the bubble cap is located above the overflow ports of the primary and secondary cavity cyclones, the bubble cap is coaxial with the primary cavity cyclone, the lower end of the bubble cap is connected with the primary cavity cyclone through a rib, the size of the bubble cap can accommodate all the overflow ports of the cyclones, the spray head is located directly above the bubble cap, and the spray head and the bubble cap are located in the spray cover. The storage and recovery component comprises a storage tank, a waste liquid tank and a centrifugal pump, the storage tank is in communication with the centrifugal pump, is used for storing the washing liquid required for spraying, and is in communication with the washing nozzle and the spray head through a pipeline to supply the washing liquid, and the waste liquid tank is located below the secondary cavity cyclone and is in communication with the bottom flow port of the secondary cavity cyclone.

2. A high-risk chlorine medium leakage in-situ self-adaptive emergency disposal device according to claim 1, characterized in that: The shell component comprises a shell, a base and a moving wheel, the moving wheel is fixedly connected to the lower part of the base, the negative pressure fan, the primary cavity cyclone, the storage tank, the waste liquid tank and the centrifugal pump are fixedly connected to the upper part of the base, and the shell is connected with the base.

3. The in-situ self-adapting emergency disposal device for high-risk chlorine medium leakage according to claim 1, characterized in that: The Venturi washing pipe comprises an inlet pipe segment, a tapered segment, a throat pipe segment and an expanding segment, wherein the inlet pipe segment is connected with the washing nozzle, the taper angle α1 of the tapered segment ranges from 10° to 20°, the length-diameter ratio L1 / D1 of the throat pipe segment ranges from 1.5 to 3.5, and the expanding angle β1 of the expanding segment ranges from 8° to 12°.

4. The in-situ self-adapting emergency disposal device for high-risk chlorine medium leakage according to claim 1, characterized in that: The length-diameter ratio L2 / D2 of the primary cylinder segment of the primary cavity cyclone ranges from 1.5 to 3, 1-2 layers of square holes are uniformly arranged on the inner wall, the cone angle α2 of the primary inverted cone ranges from 40° to 60°, the number of layers of the guide vane ranges from 2 to 5, and the interval Δd between adjacent vanes ranges from 1 / 22 to 1 / 15 of the length L2 of the primary cylinder segment.

5. The in-situ self-adapting emergency disposal device for high-risk chlorine medium leakage according to claim 3, characterized in that: The number of the secondary cavity cyclone is 2-6, the diameter D3 of the secondary cylindrical section is 1 / 3-2 / 3 of the diameter D2 of the primary cylindrical section, the length-diameter ratio L3 / D3 is 1.5-3, and the cone angle α3 of the primary inverted cone is 8°-15°.

6. The in-situ self-adapting emergency disposal device for high-risk chlorine medium leakage according to claim 3, characterized in that: The diameter D4 of the blister bottom should be greater than the sum of the diameter D2 of the primary cylindrical section and the diameter D3 of the primary cylindrical section, the blister is spherical, the aperture rate is 10-20%, and the aperture diameter Φ is 1-10 mm.

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