A laboratory toxic and harmful gas harmless treatment device and implementation method

Abstract

The present application relates to a kind of laboratory with toxic and harmful gas harmless treatment device and implementation method.By the connection of collecting device, gas washing device, power device, discharge device, the effect of gas collection, processing, purification discharge is achieved.Can be individually or nested in fume hood, by connecting multiple gas washing devices, remove a variety of harmful gases, with small volume, low noise, simple structure, low cost, convenient operation, safe and reliable, easy to carry, can quickly, completely empty toxic and harmful gas, purify experimental environment, the original only 60% toxic and harmful gas discharge treatment environment is improved to more than 95%.Wide range of applications, according to the different toxic and harmful gas, change different reaction liquid, can be targeted to exclude various soluble toxic and harmful gas, effectively improve the safety of experimental personnel in toxic and harmful gas, reduce the damage of high corrosive gas to pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of toxic and harmful gas harmless treatment device, in particular to a kind of toxic and harmful gas harmless treatment device and realization method for laboratory. BACKGROUND

[0002] In existing laboratory ventilation equipment aging, often affected by various external factors, can not thoroughly remove the toxic and harmful gas generated in the experiment process, cause gas leakage, even in fume hood operation, due to the insufficient exhaust capacity of fume hood, also can produce toxic and harmful gas dispersion, cause harm to experimental personnel, such as respiratory tract irritation and other discomfort reactions, long-term in this environment, will seriously affect the health of experimental personnel. Especially in laboratory acid-base high temperature disposal link, high temperature steam concentration is high, toxicity is big, corrosion is strong, will produce great threat to the health of operator. At the same time, the high corrosivity of toxic and harmful gas also causes damage to laboratory equipment, affects the normal operation of equipment, also can damage ventilation duct and fan, cause equipment facilities damage. In addition, if the difficulty of using the modified exhaust system is greater, the cost is higher, also can cause the influence to the balance of overall exhaust system, not worth the candle. And the current toxic and harmful gas harmless treatment device is mostly used in large-scale industrial or large-scale laboratory, the whole device system is large and complex, expensive, not suitable for general laboratory use. It is necessary to develop a kind of special equipment that can achieve the instant nature and thoroughness of toxic and harmful gas collection, effectively deal with the high corrosivity of toxic and harmful gas generated in laboratory. SUMMARY

[0003] In view of the needs of small laboratories, the present application provides a laboratory toxic and harmful gas harmless treatment device and implementation method, which can selectively remove various soluble toxic and harmful gases, effectively improve the safety of laboratory personnel working in toxic and harmful gases, and reduce the damage of highly corrosive gases to pipelines. The specific technical scheme is a laboratory toxic and harmful gas harmless treatment device, which comprises a collecting device, a gas washing device, a power device and a discharge device. The collecting device comprises a universal cover and an air inlet pipe. The gas washing device comprises a rubber plug, a tee joint, a suspended disturbance ball, a reactor, a reaction liquid, a bubble tube, a rotating disturbance wheel and a liquid inlet. The power device comprises a fan and a power discharge pipe. The discharge device comprises an anti-overflow plastic net, a liquid discharge port, a ventilation port and an exhaust pipe. The bubble tube penetrates two ports of the tee joint, and the non-porous end of the bubble tube is fastened with the tee joint port by the rubber plug. The top end of the air inlet pipe is fixed with the fixed universal cover, and the tail end is fixed with the port of the tee joint with the rubber plug. The tee joint penetrates another port of the bubble tube and is fixed in an opening on the upper end surface of the reactor. The porous end of the bubble tube, the reaction liquid and the suspended disturbance ball are placed in the reactor. The tee joint has an anti-overflow plastic net in the port without penetrating the bubble tube, and the port is fixed on the power discharge pipe with an S-shaped reflux bend on one end. The other end of the power discharge pipe is connected with the air inlet of the fan. The lowest end of the S-shaped reflux bend of the power discharge pipe has a liquid discharge port. One end of the exhaust pipe is connected with the exhaust port of the fan, and the other end is connected with the ventilation port.

[0004] The bubble tube is a long cylinder with a plurality of through holes arranged in the circumferential wall of one end. The rotating disturbance wheel is fixed on the side wall above the through hole by a shaft, so that the rotating disturbance wheel rotates along the axial direction of the bubble tube under the push of the gas.

[0005] The gas washing device can be connected in series with multiple gas washing devices according to the types of harmful gases to remove multiple types of harmful gases.

[0006] The reactor is made of corrosion-resistant plastic material, and two through holes are opened in the top. One through hole is connected with the tee joint, and the other is provided with a liquid inlet. When not in use, the through holes are sealed with lids.

[0007] The reaction liquid is configured into a toxic and harmful gas dissolving liquid according to the properties of the toxic and harmful gas.

[0008] The fan is configured according to the number of connected gas washing devices. One 130w centrifugal fan is selected for one gas washing device, or a larger power fan is shared according to needs.

[0009] The discharge pipe is a pipe bent into an S-shaped reflux bend. The lowest end of the S-shaped reflux bend has a liquid discharge port, which is tightened with a cover.

[0010] The universal cover completely covers the experimental operation range.

[0011] The implementation method is that the processing device is placed in a fume hood or separately in a laboratory; a liquid inlet on the upper end face of the reactor is opened, reaction liquid is added, and the liquid inlet is sealed; a fan is opened to form a negative pressure; toxic and harmful gas is sucked into the air inlet pipe, and the toxic and harmful gas in the air inlet pipe is completely introduced into the bubble tube through the sealing of the rubber plug, the toxic and harmful gas pushes the high-speed rotation of the blade of the pneumatic rotating turbulence wheel, the blade hits the reaction liquid in the gas washing device, plays a role of atomization and mixing, and the toxic and harmful gas is discharged from the exhaust hole; the reaction liquid (7) is fully chemically reacted to generate harmless gas, under the action of the fan, the harmless gas is discharged from the reactor, filtered through the suspended disturbance ball, and then filtered through the anti-overflow plastic net in the three-way joint, most of the liquid taken out from the reactor is intercepted, the liquid is condensed and flows back to the reactor, the remaining liquid is stored at the lowest end of the S-shaped reflux bend, the liquid is discharged by opening the liquid discharge port at regular time, and finally the harmless gas is discharged from the ventilation opening through the fan and the exhaust pipe.

[0012] The present application has the advantages of small volume, low noise, simple structure, low cost, convenient operation, safety and reliability, easy to carry, can be used alone or nested in a fume hood, can quickly and completely exhaust soluble toxic and harmful gas, purify the experimental environment, improve the environment that can only reach 60% of the toxic and harmful gas emission treatment to more than 95%, wide application range, according to different toxic and harmful gas, change different reaction liquid, can targetedly exclude various soluble toxic and harmful gas, effectively improve the safety of the experimental personnel working in the toxic and harmful gas, and reduce the damage of high corrosive gas to the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the system connection diagram of the present application;

[0014] Figure 2 is the structure schematic diagram of the bubble tube of the present application;

[0015] Figure 3 is the structure schematic diagram of the rotating turbulence wheel of the present application. EMBODIMENT

[0016] The present application will be further described below in combination with the drawings and examples. EXAMPLE

[0017] Taking strong acid toxic and harmful gas as an example.

[0018] As Figure 1 , Figure 2 , Figure 3As shown, a laboratory toxic and harmful gas harmless treatment device, including collection device, gas washing device, power device, discharge device, the collection device includes universal cover 1, air inlet pipe 2, the gas washing device includes rubber plug 3, tee 4, suspended disturbance ball 5, reactor 6, reaction liquid 7, bubble tube 8, rotating spoiler wheel 9, liquid inlet 10, the power device includes fan 14, S-shaped exhaust pipe 12, the discharge device includes anti-overflow plastic net 11, liquid outlet 13, vent 15, exhaust pipe 16, wherein the bubble tube 8 diameter 8 cm, a reactor 6 is 25L plastic bucket, reaction liquid 7 is sodium hydroxide solution, and litmus indicator is added inside, fan 14 selects a 130w centrifugal fan, universal cover 1 and air inlet pipe 2 are both acid corrosion resistant plastic material.

[0019] Put the processing device into the fume hood; open the liquid inlet 10 on the upper end surface of the reactor 6, add the reaction liquid 7, and seal the liquid inlet 10; open the fan 4 to form a negative pressure; the universal cover 1 and the air pipe 2 inhale the toxic and harmful gas, and the toxic and harmful gas in the air inlet pipe 2 is completely introduced into the bubble tube 8 through the rubber plug 3 sealing, the toxic and harmful gas pushes the high-speed rotating blades of the aerodynamic rotating spoiler wheel 9, the blades hit the reaction liquid 7 in the gas washing device, play the role of atomization and mixing, at the same time, the toxic and harmful gas is discharged from the exhaust hole 8-1, and fully reacts with the reaction liquid 7 to generate harmless gas; when the solution changes from blue to colorless, the solution changes from alkaline to neutral, and then becomes red, the solution presents acidic, at this time, the new sodium hydroxide reaction liquid 7 can be considered to be replaced. The suspended disturbance ball 5 plays two roles, one is to disturb the liquid surface under the impact of the gas, which is beneficial to the reaction of the gas and the liquid and the balance of the liquid concentration, and the other is to prevent the liquid from escaping from the reactor 6 with the gas; under the action of the fan 14, the harmless gas carries a large amount of liquid from the reactor 6 through the suspended disturbance ball 5, then passes through the anti-overflow plastic net 11 in the tee 4, intercepts most of the liquid carried out from the reactor 6, the liquid condenses and flows back to the reactor 6 when blocked, and the remaining liquid is stored at the lowest end of the S-shaped exhaust pipe 12, the liquid is discharged periodically by opening the liquid outlet 13, and the harmless gas is finally discharged from the vent 15 through the fan 14 and the exhaust pipe 16.

[0020] If the device is used alone, the exhaust pipe 16 of the discharge device can be connected to the downwind outlet which does not affect the experimental operation, and if the device is embedded in the fume hood, the exhaust pipe should be connected to the exhaust main pipeline.

Claims

1. A laboratory with toxic and harmful gas harmless treatment device, including collection device, gas washing device, power device, discharge device, the collection device includes universal cover (1), air inlet pipe (2), the gas washing device includes rubber plug (3), tee (4), suspended disturbance ball (5), reactor (6), reaction liquid (7), bubble tube (8), rotating spoiler wheel (9), liquid inlet (10), the power device includes fan (14), power discharge pipe (12), the discharge device includes anti-overflow plastic net (11), liquid outlet (13), ventilation opening (15), exhaust pipe (16), characterized in that: The tee (4) is y-shaped structure, the reactor (6) is 25L plastic bucket; The bubble tube (8) is through in two ports of tee (4), and the bubble tube (8) is not bored one end is fastened together with tee (4) one port by rubber plug (3), the top end of the air inlet pipe (2) is fixed with fixed universal cover (1), the end is fixed together with tee (4) the port of rubber plug (3), tee (4) is through the other port of bubble tube (8) is fixed in the opening of reactor (6) upper end surface, the bubble tube (8) has a hole one end, reaction liquid (7), suspended disturbance ball (5) are placed in reactor (6), tee (4) is not bored in the port of bubble tube (8) is fixed with anti overflow plastic net (11), and the port is fixed on the power discharge pipe (12) with S-shaped reflux bend one end, the other end of power discharge pipe (12) is connected together with fan (14) air inlet, the lowest end of power discharge pipe (12) S-shaped reflux bend has discharge port (13), the exhaust pipe (16) one end is connected with fan (14) exhaust, the other end is connected with air vent (15); ​ The universal cover (1) completely covers the experimental operation range; The bubble tube (8) is a long tube with several evenly arranged through holes (8-1) on the circumferential wall of one end, and a rotating turbulence wheel (9) is fixed on the side wall above the through hole (8-1) by a shaft, which rotates along the axial direction of the bubble tube (8) under the push of gas, and the diameter of the bubble tube (8) is 8 cm; The reactor is made of corrosion-resistant plastic material, and two through holes are opened at the top, one of which is connected with the tee (4) device, and the other is provided with a liquid inlet (10), which is sealed with a cover when not in use; The reaction liquid (7) is configured into a toxic and harmful gas dissolving solution according to the properties of the toxic and harmful gas.

2. The method for implementing the laboratory toxic and harmful gas harmless treatment device according to claim 1, characterized in that: The implementation method is to place the processing device in a fume hood or separately in a laboratory for use; Open the liquid inlet (10) on the upper end surface of the reactor (6), add the reaction liquid, and seal the liquid inlet (10); Open the fan (14) to form a negative pressure; The air inlet pipe (2) inhales the toxic and harmful gas, and all the toxic and harmful gas in the air inlet pipe (2) is introduced into the bubble tube (8) through the rubber plug (3) sealing, the toxic and harmful gas pushes the high-speed rotating blades of the air-driven rotating turbulence wheel (9), the blades hit the reaction liquid (7) in the gas washing device, which plays the role of atomization and mixing, and at the same time, the toxic and harmful gas is discharged from the exhaust hole (8-1); After fully chemical reaction with the reaction liquid (7), harmless gas is generated, which is discharged from the reactor (6) under the action of the fan (14), filtered by the suspended disturbance ball (5), and then filtered by the anti overflow plastic net (11) in the tee (4), which intercepts most of the liquid carried out from the reactor (6), the liquid condenses and flows back to the reactor (6) when blocked, and the remaining liquid is stored at the lowest end of the S-shaped reflux bend, the liquid is discharged by opening the discharge port (13) regularly, and finally the harmless gas is discharged from the air vent (15) through the fan (14) and the exhaust pipe (16).

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