Waste gas purification treatment device

Abstract

The utility model discloses a waste gas purification treatment device, and relates to the technical field of waste gas purification treatment. The waste gas recovery assembly comprises a collection cover; a net plate is mounted at the bottom of the collecting cover in a matched manner; the collecting cover is connected with the fan through the transmission pipe; the fan and the purification assembly are fixedly mounted; the purification assembly comprises a tower body; a plurality of layering plates are fixedly mounted in the tower body; an adsorption filler is placed on the layering plate; waste gas is effectively conveyed through the draught fan and the collecting cover, large impurities doped in the waste gas are effectively filtered out through the net plate installed at the bottom of the collecting cover, the collected gas is conveyed into the tower body through the draught fan, and in the rising process of the waste gas, the impurities in the waste gas are effectively filtered out. And the waste gas is purified through effective cooperation of the spraying assembly and the adsorption filler on the layering plate.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of waste gas purification and treatment, and specifically is a waste gas purification and treatment device. Background Technique

[0002] Waste gas purification is a crucial environmental protection measure. It refers to the removal or reduction of harmful substances in the waste gas generated during industrial production, transportation, energy utilization, etc. through a series of technologies and methods, so that it meets the national or local emission standards, thereby reducing the pollution of the atmospheric environment and the harm to human health; waste gas purification is a necessary means to achieve sustainable development and build a beautiful homeland, which requires the joint efforts of enterprises and all sectors of society to increase investment and research and development, and continuously improve the waste gas purification technology level to contribute to protecting our blue sky, white clouds and fresh air.

[0003] For example, in some coke oven gas to hydrogen plants, due to differences in process conditions and raw materials, the content of hydrogen sulfide in the waste gas may vary. High concentrations of hydrogen sulfide can not only cause serious pollution to the environment, but also lead to the destruction of the surrounding ecosystem. Another example is that if the emissions of nitrogen oxides are not effectively controlled, it may cause environmental problems such as acid rain.

[0004] After retrieval, Chinese Patent Application No. CN202320856121.0 discloses an RCO organic waste gas purification device; including a dry filter, an adsorption bed is arranged at the upper end of the dry filter, and a waste gas inlet is arranged on the outer side of the dry filter; an RCO organic waste gas purification device, through the setting of a temperature control component, a cold supplement fan, a catalytic combustion bed, a desorption pipeline and a flame arrester, during the purification process of organic waste gas, the particulate pollutants in the waste gas are intercepted and removed by the dry filter, and then enter the adsorption bed for adsorption. The treated clean air flow is discharged into the air at high altitude through a heat preservation pipeline, a system fan and a chimney. At the same time, after the activated carbon in the adsorption bed reaches saturation after adsorption operation for a period of time, the desorption and regeneration process is completed without external heating through the temperature control component and the catalytic combustion bed;

[0005] When the above-mentioned patent structure purifies waste gas, after the waste gas is effectively adsorbed in the adsorption bed, the gas adsorbed through the heat preservation pipeline is transmitted to the chimney to realize gas discharge. However, when the waste gas in the above-mentioned patent enters the heat preservation pipeline from the adsorption bed, it is impossible to effectively detect the harmful substances remaining inside the gas. In this way, the gas that is not thoroughly adsorbed by the adsorption bed may also enter the heat preservation pipeline to realize gas discharge, so that it is impossible to ensure that the gas meets the emission standards, and the purified gas will still pollute the air, resulting in low working efficiency of the purification equipment;

[0006] In view of the above situation, we provide an exhaust gas purification and treatment device. In this device, the collected exhaust gas is transmitted to the inside of the purification component through the exhaust gas recovery component. The spraying of water or chemical agents is realized through the nozzles on the spraying rack in the spraying component, so as to carry out chemical reactions with the harmful components in the flue gas. Then, through the adsorption fillers on the layered plates inside the tower body, effective adsorption is carried out. The gas passes through the adsorption fillers and the spraying equipment from bottom to top in turn, which effectively ensures the effect of gas purification. A detection probe is installed on the gas output pipe at the top of the tower body. Through the detection probe, the concentration of harmful substances in the purified gas is effectively detected. When the gas meets the emission standard, the purified gas inside the tower body is discharged through the chimney by means of a negative pressure fan. Summary of the Invention

[0007] The purpose of the present invention is to provide an exhaust gas purification and treatment device. The collected exhaust gas is transmitted to the inside of the purification component through the exhaust gas recovery component. The spraying of water or chemical agents is realized through the nozzles on the spraying rack in the spraying component, so as to carry out chemical reactions with the harmful components in the flue gas. Then, through the adsorption fillers on the layered plates inside the tower body, effective adsorption is carried out. The gas passes through the adsorption fillers and the spraying equipment from bottom to top in turn, which effectively ensures the effect of gas purification. A detection probe is installed on the gas output pipe at the top of the tower body. Through the detection probe, the concentration of harmful substances in the purified gas is effectively detected, and the gas is ensured to meet the emission standard, so as to solve the problems in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] An exhaust gas purification and treatment device includes an exhaust gas recovery component; the exhaust gas recovery component includes a collection hood; a net plate is cooperatively installed at the bottom of the collection hood; the collection hood is connected to a fan through a transmission pipe; the fan is fixedly installed with the purification component; the purification component includes a tower body; a plurality of layered plates are fixedly installed inside the tower body; adsorption fillers are placed on the layered plates; the harmful substances in the exhaust gas are effectively adsorbed through the adsorption fillers;

[0010] The bottom of the tower body is fixedly installed inside the water tank in the spraying component. A pump body is fixedly installed on the water tank. The connecting pipe connected to the pump body extends into the tower body and is connected to the spraying rack; a plurality of spraying racks are provided, and effective spraying is carried out through the nozzles on the spraying rack, so that the harmful substances in the exhaust gas react with the spraying liquid, and the harmful substances sink into the adsorption fillers and are effectively adsorbed;

[0011] As a further technical solution of the utility model, a plurality of the spray racks cooperate with the layered plates inside the tower body; a gas output pipe is fixedly installed on the top of the tower body; a detection probe is fixedly installed on the gas output pipe, and the concentration of harmful substances therein is effectively detected by the detection probe to ensure that the gas meets the emission standards;

[0012] As a further technical solution of the utility model, one end of the gas output pipe away from the tower body is fixedly installed with a negative pressure fan; and the negative pressure fan is connected to the chimney.

[0013] As a further technical solution of the utility model, the detection probe is electrically connected to the negative pressure fan through a wire.

[0014] As a further technical solution of the utility model, a filter screen is arranged between the tower body and the water tank; and a plurality of observation windows are opened on the side wall of the tower body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When the utility model is in use, the exhaust gas is effectively transmitted through the fan and the collection cover. The mesh plate installed at the bottom of the collection cover effectively filters the larger impurities mixed in the exhaust gas. The collected gas is transmitted to the inside of the tower body through the fan. In the process of the exhaust gas rising, the exhaust gas is purified by the effective cooperation of the spray assembly and the adsorption filler on the layered plate.

[0017] 2. In the utility model, when the exhaust gas rises, it passes through the layered plate and contacts the adsorption filler, and absorbs part of the harmful substances through the adsorption filler, and then sprays through the nozzle on the spray rack to react with the harmful substances in the exhaust gas, so that the harmful substances sink and are effectively adsorbed by the adsorption filler again. The exhaust gas passes through multiple adsorption fillers and the spray rack in turn, effectively ensuring the efficiency of exhaust gas purification;

[0018] 3. In the utility model, the purified gas is effectively discharged through the connection between the negative pressure fan and the gas output pipe. During the discharge process, the purified gas is effectively detected by the detection probe installed on the gas output pipe. When the concentration of the harmful substance is greater than the value set in the detection probe, it means that the reaction effect of the spray liquid and the harmful substance is not ideal. The reaction effect of the spray liquid and the harmful substance is adjusted by artificial means to ensure the precipitation reaction of the spray liquid on the harmful substances in the exhaust gas and the purification effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 is another perspective schematic diagram of the present utility model. Figure 1

[0021] Figure 3 is a disassembled schematic diagram of the present utility model. Figure 1

[0022] Figure 4 is a schematic diagram of the bottom structure of the present utility model. Figure 3

[0023] Figure 5 is a side view of the purification component of the present utility model. Figure 4

[0024] Figure 6 is a sectional view taken along line A-A of the present utility model. Figure 5

[0025] In the figure: 1 - waste gas recovery component, 10 - collection hood, 11 - fan, 12 - transmission pipe, 13 - mesh plate, 2 - purification component, 20 - tower body, 21 - gas output pipe, 33 - detection probe, 23 - observation window, 24 - filter screen, 25 - layered plate, 26 - adsorption filler, 3 - spraying component, 30 - water tank, 31 - connecting pipe, 32 - pump body, 33 - spraying rack, 40 - negative pressure fan, 41 - chimney. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-6 , in the embodiment of the present utility model, an exhaust gas purification and treatment device includes a waste gas recovery component 1; the waste gas recovery component 1 includes a collection hood 10; a mesh plate 13 is cooperatively installed at the bottom of the collection hood 10; the collection hood 10 is connected to the fan 11 through a transmission pipe 12; the fan 11 is fixedly installed with the purification component 2; the purification component 2 includes a tower body 20; a plurality of layered plates 25 are fixedly installed inside the tower body 20; adsorption fillers 26 are placed on the layered plates 25.

[0028] ​​​​​The bottom of the described tower body 20 is fixedly installed inside the water tank 30 in the spraying assembly 3. A pump body 32 is fixedly installed on the water tank 30. The connecting pipe 31 connected to the pump body 32 extends into the tower body 20 and is connected to the spraying rack 33. A plurality of the spraying racks 33 are provided.

[0029] Specifically, a plurality of the spraying racks 33 cooperate with the layered plate 25 inside the tower body 20. A gas output pipe 21 is fixedly installed at the top of the tower body 20. A detection probe 22 is fixedly installed on the gas output pipe 21.

[0030] By adopting the above technical solution, during use, the waste gas is effectively transmitted through the fan 11 and the collection hood 10. The net plate 14 installed at the bottom of the collection hood 10 effectively filters out larger impurities doped in the waste gas. The collected gas is transmitted into the tower body 20 through the fan 11. During the upward movement of the waste gas, the spraying assembly 3 and the adsorption filler 26 on the layered plate 25 effectively cooperate to achieve the purification treatment of the waste gas.

[0031] One end of the gas output pipe 21 far from the tower body 20 is fixedly installed with a negative pressure fan 40. The negative pressure fan 40 is communicated with a chimney 41.

[0032] In this embodiment, the detection probe 22 is electrically connected to the negative pressure fan 40 through a wire.

[0033] By adopting the above technical solution, during the upward movement of the waste gas, when the waste gas passes through the layered plate 25 and contacts the adsorption filler 26, a part of the harmful substances are absorbed by the adsorption filler 26. Then, spraying is carried out through the nozzles on the spraying rack 33 to react with the harmful substances in the waste gas, causing the harmful substances to sink. The adsorption filler 26 is used for effective adsorption again. The waste gas passes through a plurality of adsorption fillers 26 and the spraying of the spraying rack 33 in sequence, effectively ensuring the efficiency of waste gas purification.

[0034] In this embodiment, a filter screen 24 is provided between the tower body 20 and the water tank 30. A plurality of observation windows 23 are opened on the side wall of the tower body 20.

[0035] By adopting the above technical solution, the purified gas is effectively discharged through the connection between the negative pressure fan 40 and the gas output pipe 21. During the discharge process, the detection probe 22 installed on the gas output pipe 21 effectively detects the purified gas. When the concentration of the harmful substances is greater than the set value in the detection probe 22, it indicates that the reaction effect between the spraying liquid and the harmful substances is not ideal. The medicine is added into the water tank 30 manually to adjust the concentration of the spraying liquid, ensuring the sedimentation reaction between the spraying liquid and the harmful substances in the waste gas and guaranteeing the purification effect of the waste gas.

[0036] As a further illustration of this embodiment: The waste gas components generated during the production of hydrogen from coke oven gas mainly include the following:

[0037] Sulfides: Such as hydrogen sulfide (H2S), which has a strong pungent odor and toxicity.

[0038] Nitrogen oxides: Such as nitric oxide (NO) and nitrogen dioxide (NO2), which have adverse effects on the environment and human health.

[0039] Carbon monoxide (CO): This is a toxic gas that can cause harm to the human body.

[0040] Ammonia (NH3): It has a pungent odor.

[0041] In this embodiment, multiple detection probes 22 can be provided, which are respectively used for detecting the above-mentioned several harmful components;

[0042] The above spray liquid is a mixture of multiple chemical liquids; it contains sodium hydroxide (NaOH) solution: Sodium hydroxide is an alkaline substance that can react with hydrogen sulfide to neutralize it, thereby removing hydrogen sulfide. When using an alkali scrubber to treat hydrogen sulfide waste gas, sodium hydroxide solution is often used.

[0043] The reaction equation is: H2S + 2NaOH → Na2S + 2H2O;

[0044] Calcium hydroxide (Ca(OH)2) solution: It can also be used to absorb hydrogen sulfide and undergo a neutralization reaction to reduce the hydrogen sulfide content.

[0045] Ammonia water: The ammonia water method can use the ammonia in the coal gas as an alkaline absorbent to remove hydrogen sulfide, without adding an external alkali source and without generating waste liquid. For example, in the Duckhaks method, ammonia water is used as the absorbent to simultaneously desulfurize and decyanize.

[0046] Triazine-based chemical liquids: Such as triazine oilfield desulfurization agents, triazine hydrogen sulfide decomposing agents, etc. These chemical liquids react with hydrogen sulfide and mercaptans to form stable water-soluble substances to achieve the effect of sulfur removal.

[0047] Finally, in practical applications, when choosing which chemical liquid to eliminate the above-mentioned harmful components, factors such as the specific situation of treatment, cost, and effect need to be considered, and appropriate ratios need to be adjusted according to the actual situation of the waste gas.

[0048] The adsorption filler 26 can be one or more of activated carbon and zeolite; to ensure effective elimination of hydrogen sulfide and meet the safety and environmental protection requirements.

[0049] The working principle of the present utility model is as follows: during use, waste gas is effectively transmitted through the fan 11 and the collection hood 10. The net plate 14 installed at the bottom of the collection hood 10 effectively filters out larger impurities mixed in the waste gas. The collected gas is transmitted into the tower body 20 through the fan 11. During the upward movement of the waste gas, the purification treatment of the waste gas is effectively achieved through the effective cooperation of the spraying assembly 3 and the adsorption filler 26 on the layered plate 25;

[0050] During the upward movement of the waste gas, when the waste gas passes through the layered plate 25 and contacts the adsorption filler 26, a part of the harmful substances are absorbed by the adsorption filler 26. Then, spraying is carried out through the nozzles on the spraying frame 33 to react with the harmful substances in the waste gas, causing the harmful substances to sink. The waste gas is effectively adsorbed by the adsorption filler 26 again. The waste gas passes through multiple adsorption fillers 26 and the spraying of the spraying frame 33 in sequence, effectively ensuring the efficiency of waste gas purification;

[0051] The purified gas is effectively discharged by connecting the negative pressure fan 40 with the gas output pipe 21. During the discharge process, the purified gas is effectively detected through the detection probe 22 installed on the gas output pipe 21. When the concentration of harmful substances is greater than the set value in the detection probe 22, it indicates that the reaction effect between the spraying liquid and the harmful substances is not ideal. The medicine is added into the water tank 30 manually to adjust the reaction effect between the spraying liquid and the harmful substances, ensuring the sedimentation reaction of the spraying liquid to the harmful substances in the waste gas and the purification effect of the waste gas.

[0052] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An exhaust gas purification and treatment device, characterized in that: It includes an exhaust gas recovery component (1); the exhaust gas recovery component (1) includes a collection hood (10); a mesh plate (13) is fitted and installed at the bottom of the collection hood (10); the collection hood (10) is connected to a blower (11) through a transmission pipe (12); the blower (11) is fixedly installed with a purification component (2); the purification component (2) includes a tower body (20); a plurality of layered plates (25) are fixedly installed inside the tower body (20); adsorption fillers (26) are placed on the layered plates (25). The bottom of the tower body (20) is fixedly installed inside a water tank (30) in a spray component (3), a pump body (32) is fixedly installed on the water tank (30), a connecting pipe (31) connected to the pump body (32) extends into the tower body (20) and is connected to a spray rack (33); a plurality of the spray racks (33) are provided.

2. The waste gas purification and treatment device according to claim 1, characterized in that: A plurality of the spray racks (33) cooperate with the layered plates (25) inside the tower body (20); a gas output pipe (21) is fixedly installed at the top of the tower body (20); a detection probe (22) is fixedly installed on the gas output pipe (21).

3. An exhaust gas purification and treatment device according to claim 2, characterized in that: One end of the gas output pipe (21) far from the tower body (20) is fixedly installed with a negative pressure blower (40); the negative pressure blower (40) is communicated with a chimney (41).

4. An exhaust gas purification and treatment device according to claim 2, characterized in that: The detection probe (22) is electrically connected to the negative pressure blower (40) through a wire.

5. An exhaust gas purification and treatment device according to claim 4, characterized in that: A filter screen (24) is arranged between the tower body (20) and the water tank (30); a plurality of observation windows (23) are opened on the side wall of the tower body (20).

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