CN206980422U - Cleaning equipment for waste organic gas - Google Patents

Abstract

The utility model relates to an organic waste gas purification device, which comprises an air intake pipe, a cooling demister communicated with the air intake pipe, a purifier communicated with an air outlet of the cooling demister, and an emulsifier for generating emulsified water , the emulsifier is connected with a high-pressure water pump, and the high-pressure water pump communicates with the air intake pipe through a high-pressure water pipe. The device of the utility model can effectively purify the organic waste gas, the adsorbent in the purification process can be regenerated, and the purified and recovered organic waste gas can be used as a general organic solvent for recycling, thereby reducing the generation of secondary pollution.

Description

Organic waste gas purification device

technical field

The utility model relates to the technical field of organic waste gas treatment, in particular to an organic waste gas purification device.

Background technique

With the development of chemical and surface spraying industries, more and more volatile organic gases are discharged into the atmosphere as industrial waste gases. These organic waste gases often have special odors. The main pollutants include aromatic hydrocarbons, aldehydes, and ketones. Hydrocarbons, halogenated hydrocarbons, alcohols, etc. are all toxic and harmful compounds, and some organic waste gases also have certain carcinogenic effects. In addition, under the action of sunlight and air, organic waste gas will undergo photochemical reactions with oxidants in the atmosphere to generate more toxic photochemical smog. These exhaust gases have great potential harm to the ecological environment and human health. Therefore, the harmless treatment of organic waste gas is very important, which can effectively protect the atmospheric environment.

At present, the commonly used treatment methods for volatile industrial organic waste gas mainly include adsorption method and combustion method. The adsorption method uses an adsorbent to absorb organic waste gas, and is generally suitable for treating low-concentration organic waste gas. The disadvantage is that the adsorbent is difficult to regenerate and needs to be replaced continuously. The combustion process is relatively simple, easy to operate, and can recover the heat after combustion, but cannot recover useful substances. It is only effective for high-concentration organic waste gas, and it is easy to produce secondary pollution during the combustion process.

Utility model content

The purpose of this utility model is to provide an organic waste gas purification device which can effectively purify organic waste gas, and the adsorption in the purification process The solvent can be regenerated, and the purified organic waste gas can be used as a general organic solvent for recycling to reduce secondary pollution.

In order to achieve the above object, the utility model provides an organic waste gas purification device, comprising an air intake pipe, a cooling demister connected to the air intake pipe, a purifier connected to the air outlet of the cooling demister, and a An emulsifier for generating emulsified water, the emulsifier is connected with a high-pressure water pump, and the high-pressure water pump communicates with the air intake pipe through a high-pressure water pipe.

Further, it also includes a demulsifier for separating emulsified water and organic solvent, the liquid inlet of the demulsifier communicates with the liquid outlet of the cooling demister and the liquid outlet of the purifier respectively, The liquid outlet of the demulsifier communicates with the liquid inlet of the emulsifier.

Preferably, the cooling demister is provided with multiple layers of condensing plates, and each layer of condensing plates is provided with cooling pipes and through holes for liquid circulation.

Preferably, the purifier includes a purifier body, an activated carbon adsorption layer is provided in the purifier body, an air outlet is provided on the top of the purifier body, and an The liquid outlet is connected to the liquid inlet of the purifier, and the side of the purifier body is provided with an air inlet connected to the air outlet of the cooling demister.

Further, a baffle for supporting the activated carbon adsorption layer is provided under the activated carbon adsorption layer, and a plurality of through holes for gas circulation are provided on the baffle.

Further, a filter is connected between the emulsifier and the high-pressure water pump.

Compared with the prior art, the utility model has the beneficial effects of:

(1) The organic waste gas purification device provided by the utility model is simple in structure, easy to operate, simplifies the waste gas purification structure, and occupies a small area. The organic waste gas is purified twice through condensation purification and adsorption purification. The emulsified water is mixed and condensed to form a condensed liquid. The uncondensed organic waste gas is adsorbed and purified by the purifier to further remove harmful substances in the organic waste gas, effectively purify the organic waste gas, and have high safety.

(2) The organic waste gas purification device provided by the utility model is also equipped with a demulsifier, and the liquid formed after condensation is demulsified to separate and recycle the organic solvent in the organic waste gas, and the water for purifying the organic solvent can be recycled without any waste. Secondary pollution, reducing water pollution and waste water production.

Description of drawings

Fig. 1 is a structural diagram of an organic waste gas purification device according to a specific embodiment of the present invention.

Fig. 2 is a cross-sectional view of the cooling demister in the organic waste gas purification device of the utility model.

In the figure, 1. Intake pipe, 2. Cooling demister, 21. Condenser plate, 22. Cooling pipe, 23. Through hole, 24. Air outlet, 25. Liquid outlet, 3. Purifier, 31. Activated carbon adsorption Layer, 32, air outlet, 33, liquid outlet, 34, air inlet, 35, baffle, 4, emulsifier, 41, liquid inlet, 5, high-pressure water pump, 51, high-pressure water pipe, 6, demulsifier , 61, the first liquid inlet, 62, the second liquid inlet, 63, the first liquid outlet, 64, the first control valve, 65, the second control valve, 66, the third control valve, 67, the second Liquid outlet, 68, the fourth control valve, 7, filter.

detailed description

Below, the utility model is described in detail through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "top", "bottom", "side", "lower" etc. is based on the positional relationship shown in the drawings , is only for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Referring to Fig. 1, an embodiment of the present utility model provides an organic waste gas purification device, including an air intake pipe 1, a cooling demister 2 connected to the air intake pipe 1, and a cooling demister 2 connected to the air outlet of the cooling demister 2 The purifier 3 and the emulsifier 4 for generating emulsified water, the emulsifier 4 is connected with a high-pressure water pump 5 , and the high-pressure water pump 5 communicates with the air intake pipe 1 through a high-pressure water pipe 51 .

The organic waste gas purification device provided by the utility model is equipped with a cooling demister, a purifier and an emulsifier. The emulsified water in the emulsifier is mixed with the organic waste gas to form atomized water vapor through a high-pressure water pump, so as to improve the dissolution of the organic waste gas in the water vapor. Diffusion rate and dissolution rate, improve adsorption capacity and purification capacity. During the purification process of organic waste gas, the emulsified water vapor and organic waste gas are combined into the cooling demister for condensation, the condensed liquid settles, and the uncondensed organic waste gas enters the purifier for further adsorption and purification, and the organic waste gas undergoes secondary purification through condensation purification and adsorption purification. It can effectively purify organic waste gas and has high safety.

Continue to refer to Fig. 1, in order to prevent secondary pollution during the purification process, the above-mentioned organic waste gas purification device is further designed, and the organic waste gas purification device also includes a demulsifier 6 for separating emulsified water and organic solvent, and the demulsification The first liquid inlet 61 of the device 6 communicates with the liquid outlet 25 of the cooling demister 2, and the second liquid inlet 62 of the demulsifier 6 communicates with the liquid outlet 33 of the purifier 3, so The liquid outlet 63 of the demulsifier 6 communicates with the liquid inlet 41 of the emulsifier 4 . The liquid condensed and settled in the cooling demister enters the demulsifier for demulsification, so that the organic matter is separated from the demulsified water. The upper layer is the organic solvent that can be recycled and reused, and the lower layer is the demulsified water that can flow into the emulsifier. Re-emulsification, repeated use, high utilization rate, saving operation and treatment costs, less water consumption, and no secondary pollution.

Continuing to refer to Fig. 1, as a further design of the above-mentioned organic waste gas purification device, in order to facilitate the control of the condensed water containing organic matter entering the demulsifier for demulsification, a first control valve is provided at the first liquid inlet 61 of the demulsifier 6 64. The second liquid inlet 62 is provided with a second control valve 65, and the water containing organic matter entering the demulsifier is controlled through two control valves. At the same time, in order to facilitate the control of demulsified demulsified water entering the emulsifier for recycling, the first liquid outlet 63 of the demulsifier 6 is provided with a third control valve 66, through which the demulsified demulsified water is controlled. Water enters the emulsifier 4 for recycling.

Continue to refer to Figure 1, as the above-mentioned organic waste gas purification device is further designed, in order to facilitate the recovery of the organic solvent separated after demulsification in the demulsifier, the demulsifier 6 is also provided with a second liquid outlet for the organic solvent to flow out 67. In order to facilitate the control of the outflow of the organic solvent, a fourth control valve 68 is also provided at the second liquid outlet 67.

In order to improve the condensation effect of the cooling demister, as the preferred design of the above-mentioned organic waste gas purification device, the cooling demister is equipped with multi-layer condensation plates, and each layer of condensation plates is provided with cooling pipes and through holes for liquid circulation . Continue to refer to Fig. 1, and refer to Fig. 2, in a preferred design of the above-mentioned organic waste gas purification device, the cooling demister 2 is provided with five layers of condensation plates 21, and each layer of condensation plates is provided with cooling pipes 22 and The cooling pipe 22 is located below the condensation plate 21 through the through hole 23 through which the liquid circulates. It should be noted that the number of layers of the condensing plate is not limited to 5 layers, and can be adjusted according to the intake volume of organic waste gas, and can be 4 layers, 6 layers, 7 layers, or 8 layers. In order to improve the condensation effect, the more layers of condensation plates, the more conducive to the condensation of water vapor.

Continuing to refer to Fig. 1, as the preferred design of the above-mentioned organic waste gas purification device, the purifier 3 includes a purifier body, an activated carbon adsorption layer 31 is arranged in the purifier body, and an air outlet 32 is provided on the top of the purifier body, The bottom of the purifier body is provided with a liquid outlet 33 communicating with the second liquid inlet 62 of the demulsifier 6, and one side of the purifier body is provided with an air outlet connected to the cooling demister 2 24 connected to the air inlet 34 . The uncondensed organic waste gas condensed and purified by the cooling demister enters the purifier, and the harmful substances in the organic waste gas are further absorbed through the adsorption of the activated carbon adsorption layer, so as to realize the secondary purification of the organic waste gas. The organic waste gas is purified in the purifier. The condensed liquid enters the demulsifier for demulsification, recovers the organic solvent and demulsified water for recycling, and the organic waste gas purified by the purifier can be discharged through the gas outlet without secondary pollution.

Continue to refer to Fig. 1, because the activated carbon adsorption layer is made up of activated carbon particles, in order to prevent it from falling, block the liquid outlet, as a preferred design, the bottom of the activated carbon adsorption layer 31 is provided with a baffle plate 35 for supporting the activated carbon adsorption layer, through The baffle supports the activated carbon adsorption layer. In order to allow the organic waste gas to enter the activated carbon adsorption layer smoothly, the baffle plate 35 is provided with a plurality of through holes (not shown) for gas circulation.

Continue to refer to Fig. 1, in order to prevent the impurities contained in the emulsified water from clogging the high-pressure water pump and affecting the normal operation of the high-pressure water pump, as the above-mentioned organic waste gas purification device is further designed, a filter is connected between the emulsifier 5 and the high-pressure water pump 5 7. The emulsified water in the emulsifier is filtered through a filter before entering the high-pressure water pump to filter out impurities in the emulsified water.

Using the organic waste gas purification device described in the above embodiments to treat organic waste gas, the specific steps are:

S1: Add water to the emulsifier, and add emulsifier to fully stir and dissolve to form emulsified water with emulsifying ability;

S2: The emulsified water is pressurized and vaporized by a high-pressure water pump, so that the emulsified water forms atomized droplets;

S3: The organic waste gas in the intake pipe and the atomized liquid droplets in the high-pressure water pipe are fully contacted and mixed in the high-pressure airflow to form supersaturated water vapor containing organic matter;

S4: The supersaturated water vapor enters the cooling demister and condenses to form water droplet settlement;

S5: The unsettled gas enters the purifier, and the purified gas is obtained after being purified by the purifier.

When the above-mentioned organic waste gas purification device provided by the utility model is used for organic waste gas treatment, the vaporized emulsified water is pressurized by a high-pressure water pump to form atomized water vapor and mixed with organic waste gas, so as to improve the dissolution diffusion rate and dissolved amount of organic waste gas in water vapor, and improve adsorption. ability and purification ability. The emulsified water vapor and organic waste gas are combined into the cooling demister for condensation, the condensed liquid settles, and the uncondensed organic waste gas enters the purifier for further adsorption and purification. The organic waste gas is purified by condensation purification and adsorption purification for the second time, which can effectively purify the organic waste gas. High security.

As a further design, in step S4, the water containing organic matter settled in the cooling demister enters in the demulsifier, and when the adsorbed organic matter and water start to separate, add a demulsifier in the demulsifier for demulsification, so that The organic matter is fully separated from the demulsified water, the separated organic matter is recovered, and the separated demulsified water enters the emulsifier for further use.

In a preferred embodiment, in order to accelerate the separation of the organic solvent in the water containing organic matter and the emulsified water, in the demulsifier, a concentration of 0.1%-3% of polyoxyethylene polyoxypropylene decoction is added to the water containing organic matter Octol ethers act as demulsifiers. In order to effectively separate the organic solvent and the emulsified water in the water containing organic matter after condensation and sedimentation, the utility model limits the concentration of the demulsifier. It can be understood that those skilled in the art can select the concentration within the above range for reasonable addition according to the actual situation.

In a preferred embodiment, in the emulsifier, the emulsifier is composed of sodium dodecylbenzenesulfonate with a concentration of 1%-5%, Span-80 with a concentration of 0.1%-2%, and Span-80 with a concentration of 1%- 5% trisodium phosphate composition. In order to effectively improve the emulsification and affinity of water to organic components, and increase the dissolution rate and amount of organic waste gas dissolved in water vapor, the utility model limits the composition and content of the emulsifier. It can be understood that those skilled in the art can select the proportion within the above range for reasonable addition according to the actual situation.

In order to introduce the organic waste gas purification device provided by the embodiment of the present utility model more clearly and in detail, the following will be described in conjunction with specific embodiments.

Example 1: A surface coating factory only discharges organic waste gas at high altitudes, polluting the surrounding environment. After the above-mentioned organic waste gas purification device of the utility model is used to recycle and purify the organic waste gas, the recovery rate of organic matter reaches 99%, and the concentration of the discharged waste gas reaches local standard.

Example 2: A painting factory did not treat the organic waste gas, but simply pumped and discharged it, and the discharge did not meet the standard. After adopting the above-mentioned organic waste gas purifying device of the utility model to recycle and purify the organic waste gas, the recovery rate of organic matter reaches 99%, the concentration of the discharged waste gas reaches the local standard, and the environment is no longer polluted.

The above-described embodiments are used to explain the utility model, rather than to limit the utility model. Within the spirit of the utility model and the scope of protection of the claims, any modifications and changes made to the utility model all fall into the scope of the utility model. protected range.

Claims (6)

1. An organic waste gas purification device, characterized in that it comprises an air intake pipe, a cooling demister communicated with the air intake pipe, a purifier communicated with the air outlet of the cooling demister, and a device for generating emulsified water An emulsifier, the emulsifier is connected with a high-pressure water pump, and the high-pressure water pump communicates with the air intake pipe through a high-pressure water pipe. 2. The organic waste gas purification device according to claim 1, further comprising a demulsifier for separating emulsified water and organic solvent, the liquid inlet of the demulsifier is connected to the cooling demister respectively The liquid outlet of the purifier communicates with the liquid outlet of the purifier, and the liquid outlet of the demulsifier communicates with the liquid inlet of the emulsifier. 3. The organic waste gas purification device according to claim 2, wherein the cooling demister is provided with multiple layers of condensation plates, and each layer of condensation plates is provided with cooling pipes and through holes for liquid circulation. 4. The organic waste gas purification device according to claim 3, wherein the purifier comprises a purifier body, an activated carbon adsorption layer is arranged in the purifier body, and an air outlet is arranged on the top of the purifier body , the bottom of the purifier body is provided with a liquid outlet connected to the liquid inlet of the demulsifier, and one side of the purifier body is provided with an air inlet connected to the air outlet of the cooling demister . 5. The organic waste gas purification device according to claim 4, wherein a baffle for supporting the activated carbon adsorption layer is provided under the activated carbon adsorption layer, and a plurality of baffles for gas circulation are arranged on the baffle. through hole. 6. The organic waste gas purification device according to claim 1, wherein a filter is connected between the emulsifier and the high-pressure water pump.