CN109141973B - Device and method for collecting acid mist in atmosphere of fixed pollution source - Google Patents
Device and method for collecting acid mist in atmosphere of fixed pollution source Download PDFInfo
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- CN109141973B CN109141973B CN201710504988.9A CN201710504988A CN109141973B CN 109141973 B CN109141973 B CN 109141973B CN 201710504988 A CN201710504988 A CN 201710504988A CN 109141973 B CN109141973 B CN 109141973B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
Abstract
The invention relates to the field of environmental protection, in particular to a device and a method for collecting acid mist in fixed pollution source atmosphere. Contain the collection container of top, place the fog drip collection disc among the collection container, the fog drip collection disc is resin poroid disc, and it contains a plurality of resin twigs, a plurality of resin twigs parallel distribution, the reducing part below of collection container below is the resin filter layer again, the collection container below is for having the filter layer, the collector of heat preservation, this collector avris that has the filter layer, heat preservation has a suction filtration pump interface, suction filtration pump interface connection suction filtration pump, this collector below that has the filter layer, heat preservation contains a collecting liquid and gets the mouth. Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: the collecting end of the resin is more durable, and the solution of the fine line is corroded by acid and is not durable; the filter layer can enable the collected solution to be cleaner; the bottom of the inclined collector makes the collected solution easier to pour out; the liquid level sensor can avoid the overflow of the liquid level.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a device and a method for collecting acid mist in fixed pollution source atmosphere.
Background
Fog is a fine water droplet floating in the air below, and is an aerosol suspended near the ground. The fog particles are generally spherical and have the diameter of 2-100 mu m. Acid mist is a kind of acid rain in a broad sense, and refers to a misty acid substance. Forming a route: 1. due to the evaporation of the surface of the acid solution, acid molecules enter air, absorb moisture and are condensed to form acid fog drops; 2. chemical reaction occurs in the acid solution to generate bubbles, the bubbles float out of the liquid surface and then explode, and liquid drops are taken out of the air. The method is mainly produced in acid using procedures in industries such as chemical industry, metallurgy, light industry, electroplating, textile (chemical fiber), grease, papermaking, mechanical manufacturing and the like.
Acid mist is formed by absorption of acidic substances in the atmosphere by mist droplets, and the acid droplets are also important places for forming the acid mist. With the rapid development of economy, the consumption of fossil energy is rapidly increased, the generation frequency of acid mist is higher, the pH value of the acid mist can be lower than 2.0, waste gas accumulated in the air in foggy days is not easy to dissipate, the acid mist destroys a plant cutin wax layer, plant light is inhibited, the growth of the plant cutin wax layer is hindered, and the plant death and the forest decline are caused; when a person is exposed to acid mist for a long time, the nasal mucosa is withered and accompanied with the hypoesthesia or disappearance of the olfactory sensation, chronic bronchitis, pulmonary edema and tooth erosion are caused, the acid mist contains various pathogenic carcinogenic factors, various diseases and cancers are induced, and the damage degree to plants and the damage degree to body health are difficult to estimate.
The fog is only generated in limited time and place, and is difficult to collect and collect, so that the collected fog is generally a simple device qualified by related personnel in practical research, and a developed and formed fog collector is not provided. The existing fog collecting method is divided into two types, one is that a plurality of fine line grids are longitudinally pulled up, and a fan is arranged behind the fine line grids to suck air, so that fog drops are collided and collected on the fine lines; the other method is a rotary rod collection method, wherein a catcher is arranged at the top end of a rotary rod, a motor drives the rotary rod to rotate, and the fog particles are collected through centrifugation.
The acid fog treating method is mainly liquid absorption, electrostatic defogging, suspended plastic ball covering or foam generating with fog inhibitor.
The detection method of the acid mist mainly comprises a spectral detection method and a chromatographic detection method, wherein the spectral detection method comprises ultraviolet light detection, chemical light detection, fluorimeter detection, IR, Raman and the like; the chromatographic detection comprises gas phase and liquid phase.
Acid mist collection, one in which the mist droplets are collected directly into a collector, the other in which the collector is filled with lye. Collection method the mist droplets are collected by impingement on a fine wire or by rotating rod collection as described in 1. We have found that there is no clear separation system in the process of collecting the mist droplets and that if the concentration of the acid mist is large, the fine lines are inevitably not durable and there are other impurities in the collected solution. And if the alkali liquor absorption liquid is used for collection, the water is easy to freeze in winter.
Disclosure of Invention
The purpose of the invention is as follows: the specific purpose is to provide a better collection device and method for fixing acid mist in pollution source atmosphere, and the specific purpose is to see a plurality of substantial technical effects of the specific implementation part.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first scheme is as follows:
the collection device of acid mist in fixed pollution source atmosphere, a serial communication port, contain the collection container of top, place the fog drip in the collection container and collect the disc, the fog drip is collected the disc and is resin poroid disc, it contains a plurality of resin twigs, a plurality of resin twigs parallel distribution, the reducing part below of collection container below is the resin filter layer again, the collector below is for having the filter layer, the collector of heat preservation, this collector avris that has the filter layer, the heat preservation contains a suction filtration pump interface, suction filtration pump interface connection suction filtration pump, this collector below that has the filter layer, the heat preservation contains a collection liquid and gets the mouth.
The invention further adopts the technical scheme that the mouth part of the collector is provided with a clamping groove, and the clamping groove can be used for placing the resin filter layer.
The invention further adopts the technical scheme that the bottom wall of the collector is an inclined surface, and the inclined surface inclines towards the collected liquid taking port.
The invention has the further technical scheme that the collecting liquid taking port and the suction filtration pump port respectively comprise valves.
The invention further adopts the technical scheme that the butted opening parts of the collecting container and the collector are all diameter-variable parts.
The invention has the further technical scheme that a layer of heat-insulating material is arranged outside the collector.
The invention further adopts the technical scheme that the fog drop collecting disc is a plastic disc for collection, the disc is provided with an aperture resin twig, the disc is provided with an aperture capable of being provided with a sensor, the sensor is a liquid level sensor, the wall of the liquid level sensor is attached to a wall and is wired, and the liquid level sensor is in communication connection with an alarm device.
The invention further adopts the technical scheme that the resin filter layer can filter out organic substances.
A method for collecting acid mist in atmosphere of stationary pollution source, characterized in that the collecting device as described above is used, comprising the steps of,
fog is fine water droplets floating in the air, and is aerosol suspended near the ground; collection was started and the pump suction was started. In the process of brownian motion of the fog, irregular motion collides with high-grade twigs, fog drops are captured, along with more and more fog drops are gathered and are settled on a disc-shaped first filtering device, namely a fog drop collecting disc, under the action of gravity and the action of gravity, the fog drops continuously flow downwards through the pore diameter, pass through a filtering layer and are finally collected into a collector; in the whole collection process, if the collected acid liquid exceeds the liquid level height, the sensor can warn to avoid secondary pollution caused by excessive overflow of the collected liquid.
Compared with the prior art, the invention adopting the technical scheme has the following beneficial effects: the collecting end of the resin is more durable, and the solution of the fine line is corroded by acid and is not durable; the filter layer can enable the collected solution to be cleaner; the bottom of the inclined collector makes the collected solution easier to pour out; the liquid level sensor can avoid the overflow of the liquid level.
Drawings
To further illustrate the present invention, further description is provided below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the inventive collection structure;
FIG. 2 is a process flow diagram of the invention;
wherein: 1. a resin outer wall; 2. resin twigs; 3 resin porous disc shape; 4. a resin filter layer; 5. a suction filtration pump interface; 6. a collector with a filter layer and a heat insulation layer; 7. a clip; 8. collecting liquid and taking out the mouth; 9. a liquid level sensor; 10. a thermal insulation material; 11. alkali solution absorption liquid or acid mist dropping solution; 12. a sloped container bottom; 13. a fixed side; 14. a glass wall.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
The first scheme is as follows:
the collection device of acid mist in fixed pollution source atmosphere, a serial communication port, contain the collection container of top, place the fog drip in the collection container and collect the disc, the fog drip is collected the disc and is resin poroid disc, it contains a plurality of resin twigs, a plurality of resin twigs parallel distribution, the reducing part below of collection container below is the resin filter layer again, the collector below is for having the filter layer, the collector of heat preservation, this collector avris that has the filter layer, the heat preservation contains a suction filtration pump interface, suction filtration pump interface connection suction filtration pump, this collector below that has the filter layer, the heat preservation contains a collection liquid and gets the mouth. The technical scheme of the invention has the following substantial technical effects and the realization process: fog is fine water droplets floating in the air, and is aerosol suspended near the ground; collection was started and the pump suction was started. In the process of brownian motion of the fog, irregular motion collides with high-grade twigs, fog drops are captured, along with more and more fog drops are gathered and are settled on a disc-shaped first filtering device, namely a fog drop collecting disc, under the action of gravity and the action of gravity, the fog drops continuously flow downwards through the pore diameter, pass through a filtering layer and are finally collected in a collector. The resin fine branches therein preferably have a diameter of 0.05 cm to 1 cm, most preferably, and can be woven into a net shape.
Detection and analysis:
1. if the acid mist drops are directly collected, the analysis is carried out by ion chromatography. The ion chromatograph has an autosampler. In the analysis process, firstly establishing a method, and then determining the retention time of nitrate ions; preparing a standard series solution according to the concentration of an actual sample, and drawing a calibration curve; and (4) mixing a proper amount of sample, and analyzing by an ion chromatograph.
2. If the collection liquid is alkaline liquid, the nitrate nitrogen is measured by GB/T7480-1987 spectrophotometry for measuring water quality nitrate. The detection range of nitrate nitrogen of the standard is between 0.02 and 2.0mg/L, so if the method is used, the nitrate nitrogen is diluted, and then detection analysis is carried out according to the standard, and finally the concentration of nitrate in the original collection liquid is converted.
The mouth of the collector is provided with a clamping groove, and the resin filter layer can be placed in the clamping groove. The technical scheme of the invention has the following substantial technical effects and the realization process: a specific fixing manner of the resin filter layer is provided, and similar fixing is in the protection scope of the patent.
The bottom wall of the collector is an inclined surface, and the inclined surface slopes towards the collected liquid taking opening. The technical scheme of the invention has the following substantial technical effects and the realization process: the liquid is convenient to be poured out without shaking the whole body. The bottom of the collector is inclined to facilitate the pouring out of the collected acid mist.
The collecting liquid taking port and the suction filtration pump interface respectively comprise valves. When not in use, the valve can be closed. The mouth parts of the collecting container and the collector which are butted are all variable-diameter parts.
The collector has a layer of insulation on the exterior. Preventing icing.
The fog drip collecting disc is a plastic disc for collection, aperture resin twigs are arranged on the disc, an aperture on the disc can be used for installing a sensor, the sensor is a liquid level sensor, the wall of the liquid level sensor is attached to the wall of the disc and is wired, and the liquid level sensor is in communication connection with an alarm device. In the whole collection process, if the collected acid liquid exceeds the liquid level height, the sensor can warn to avoid secondary pollution caused by excessive overflow of the collected liquid.
Creatively, the above effects exist independently, and the combination of the above results can be completed by a set of structure.
The technical effect that above structure was realized realizes clearly, if do not consider additional technical scheme, this patent name can also be an environmental protection structure. Some details are not shown in the figures.
It should be noted that the plurality of schemes provided in this patent include their own basic schemes, which are independent of each other and are not restricted to each other, but they may be combined with each other without conflict, so as to achieve a plurality of effects.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and the invention is to be limited to the embodiments described above.
Claims (1)
1. The collecting device for the acid mist in the atmosphere of the fixed pollution source is characterized by comprising a collecting container above, wherein a mist collecting disc is arranged in the collecting container, the mist collecting disc is a resin porous disc and comprises a plurality of resin branches, the resin branches are distributed in parallel, a resin filtering layer is arranged below a diameter-variable part below the collecting container, a collector with a filtering layer and a heat-insulating layer is arranged below the collecting container, a suction filtration pump interface is arranged on the side of the collector with the filtering layer and the heat-insulating layer, the suction filtration pump interface is connected with a suction filtration pump, and a collected liquid taking port is arranged below the collector with the filtering layer and the heat-insulating layer;
the mouth of the collector is provided with a clamping groove, and the resin filter layer can be placed in the clamping groove; the bottom wall of the collector is an inclined surface, and the inclined surface slopes towards the collected liquid taking port;
the collecting liquid taking port and the suction filtration pump port respectively comprise valves;
the butted opening parts of the collecting container and the collector are variable-diameter parts;
a layer of heat insulating material is arranged outside the collector;
the fog drop collecting disc is a plastic disc for collection, the disc is provided with aperture resin branches, an aperture is arranged on the disc and can be provided with a sensor, the sensor is a liquid level sensor, the wall of the liquid level sensor is attached to a wall and is wired, and the liquid level sensor is in communication connection with an alarm device;
the resin filter layer can filter out organic substances;
if the acid mist drops are directly collected, analyzing by using ion chromatography; the ion chromatograph has an autosampler; in the analysis process, firstly establishing a method, and then determining the retention time of nitrate ions; preparing a standard series solution according to the concentration of an actual sample, and drawing a calibration curve; taking a proper amount of sample, and analyzing by an ion chromatograph;
if the collecting liquid is alkali liquor, measuring the nitrate nitrogen by GB/T7480-1987 phenol disulfonic acid spectrophotometry for measuring water nitrate; the detection range of nitrate nitrogen of the standard is between 0.02 and 2.0mg/L, so if the method is used, the nitrate nitrogen is diluted, and then detection analysis is carried out according to the standard, and finally the concentration of nitrate in the original collection liquid is converted.
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| CN201710504988.9A CN109141973B (en) | 2017-06-28 | 2017-06-28 | Device and method for collecting acid mist in atmosphere of fixed pollution source |
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| CN201710504988.9A CN109141973B (en) | 2017-06-28 | 2017-06-28 | Device and method for collecting acid mist in atmosphere of fixed pollution source |
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| CN109141973B true CN109141973B (en) | 2021-09-21 |
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