CN210544267U

CN210544267U - Continuous active carbon adsorption device

Info

Publication number: CN210544267U
Application number: CN201920895733.4U
Authority: CN
Inventors: 周军
Original assignee: Shanghai Everclean Environment Technology Co ltd
Current assignee: Shanghai Everclean Environment Technology Co ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-05-19
Anticipated expiration: 2029-06-14

Abstract

The utility model discloses a continuous active carbon adsorption device, which comprises a shell and at least one active carbon mechanism arranged in the shell; the activated carbon mechanism comprises a first main electrode, a second main electrode and an activated carbon layer; the second main electrode forms a frame structure, and the formed frame structure covers the activated carbon layer; the first main electrode is arranged at the first end of the frame structure; the first main electrode is connected with a positive electrode wire, and the positive electrode wire penetrates through the activated carbon layer to reach the second end of the frame structure and then is connected with the positive electrode of the transformer; the second main electrode is connected with the shell so as to be connected with the negative electrode of the transformer; the shell forms an electric field in the action of the first main electrode and the second main electrode. The utility model provides a continuation active carbon adsorption device can shorten the period of adsorbing again, and the treatment range is wide, and the treatment effeciency is high. The utility model discloses continuation active carbon adsorption device can utilize the active carbon lastingly, has avoided the useless production of regeneration, the danger of active carbon, the waste of resource.

Description

Continuous active carbon adsorption device

Technical Field

The utility model belongs to the technical field of the environmental protection equipment, a exhaust treatment device is related to, especially, relate to a continuation active carbon adsorption device.

Background

The influence of malodorous gases on the human environment is a very important problem in today's society and has attracted more and more attention. In some developed countries, there is an increasing proportion of people complaints about malodors. In australia, complaints about malodour account for 91.3% of the total complaints about environmental pollution; in the united states, it accounts for over 50% of all air pollution complaints; second only to noise in japan. In each big city of China, complaints of residents on the offensive odor show a rapidly increasing trend, and the great attention of relevant departments is drawn.

The malodorous substances are various in types, and at present, people find that the malodorous substances in the environment are more than tens of thousands of types, and more than 4000 types can be sensed by the smell of people, wherein more than 50 types have great harm to human beings. Malodorous gases can be classified into 5 types by chemical composition: (1) a sulfur-containing compound: H2S, SO2, thiols, thioethers, etc. The sulfur-containing malodorous substances have wide source and great toxicity. Among them, hydrogen sulfide, methyl mercaptan and ethyl mercaptan are typical malodorous, toxic and harmful gases; (2) nitrogen-containing compounds: amines, amides, indoles, etc.; (3) halogen and its derivatives: chlorine, halogenated hydrocarbons, etc.; (4) hydrocarbons: alkanes, alkenes, alkynes, aromatics, and the like; (5) oxygen-containing organic matter: alcohols, aldehydes, ketones, phenols, esters, organic acids, and the like.

Malodorous stains irritate olfactory cells by odoriferous groups, such as sulfur, carbonyl, etc., which are unpleasant and unpleasant to the human. The malodor can affect the respiratory, digestive, cardiovascular, endocrine and nervous systems of the human body. The high concentration of malodors can also cause pulmonary edema and even asphyxia death of the contacted person, and cause olfactory fatigue and olfactory failure after long-term repeated stimulation by the malodorous substances.

The emission standard of the odor pollution is issued in 1993 in China, and the primary maximum emission limit of eight typical odor pollutants, the odor concentration limit of a composite odor substance and the factory boundary concentration limit of an unorganized emission source are regulated in different years (Table 1). The properties of the olfactory threshold of some common malodorous substances are shown in table 2, and it can be seen that the malodorous substances can generate olfactory stimulation to human beings at very low concentrations (ppb level). Steven's formula I ═ k (C) n (I: malodor intensity, C: malodor concentration) reflects that the sensory amount of malodor to humans (malodor intensity) is directly proportional to the logarithm of the amount of irritation to humans (malodor concentration). The above formula shows that even if the malodorous substance is removed by 90%, the human feels that only 50% is removed, which makes the malodorous pollution control more difficult than other air pollution control.

The standard of influence of malodorous gases distributed in urban and rural living communities on human health now has multiple aspects: brings unpleasant feelings to people, and can cause physiological and psychological symptoms such as unstable mood, dysphoria, inappetence, dysosmia, insomnia, nausea, headache, asthma induction and the like. The high concentration of malodors can cause the important physiological mechanisms of human bodies to generate obstacles and pathological changes, so that the human bodies can generate chronic diseases and shorten the life span, and even can cause the polluted people to generate acute diseases and cause death in severe cases.

Introduction to the typical Process at present

(1) Catalytic combustion (RCO) process

The catalytic combustion method is that the organic waste gas is heated to 200-320 ℃, then contacts with a catalyst to carry out flameless catalytic combustion to generate harmless and odorless carbon dioxide and water, and the desorbed mixed waste gas can be completely decomposed in a catalytic decomposition chamber without secondary pollution. The catalytic decomposition chamber adopts a catalyst and electric heating to generate heat energy, when the catalytic decomposition chamber reaches a set temperature, the mixed waste gas passes through a catalytic bed to generate heat energy through catalytic decomposition reaction, when the temperature of the catalytic chamber exceeds the set temperature, the system stops heating, the power consumption of the catalytic decomposition chamber is greatly reduced, and when the mixed waste gas reaches a certain temperature, the system is in a non-power running state.

The organic waste gas purifying and catalyzing device adopts HPA (KMK) as a catalyst, the catalyst adopts gamma-Al 2O3 as a carrier, noble metals Pt and Pd as main active ingredients and is prepared by a method of high dispersion rate and uniform distribution, and the catalyst is a novel high-efficiency organic waste gas purifying catalyst.

By adopting the adsorption concentration catalytic combustion method, the cost of the catalyst is high during operation, and special consideration needs to be given to the sealing of a switching valve and the sealing of a system, and potential safety hazards possibly appear need to be considered. In addition, for organic matters containing halogen, the catalytic combustion method has larger potential secondary pollution and equipment corrosion problems.

(2) Regenerative Thermal Oxidizer (RTO) process

The heat accumulating type thermal oxidation furnace is called as 'Regenerative thermal oxidizer' in English, so the heat accumulating type thermal oxidation furnace is called as 'RTO' for short. The principle is that the organic waste gas is heated to more than 750 ℃ to oxidize and decompose VOC in the waste gas into carbon dioxide and water, and the residence time of the organic waste gas in a combustion chamber is 1-2 seconds. The high-temperature gas generated by oxidation flows through a specially-made ceramic heat accumulator to heat the ceramic body so as to store heat, and the heat is used for preheating subsequently entering organic waste gas, so that the fuel consumption of waste gas heating is saved. The ceramic heat accumulator is divided into more than two (including two) zones or chambers, and each heat accumulator chamber sequentially undergoes heat accumulation-heat release-cleaning and other procedures, and the operation is repeated and continuous. After the heat storage chamber is subjected to heat release, part of the qualified clean exhaust gas which is processed is introduced immediately to clean the heat storage chamber (so as to ensure that the VOC removal rate is more than 95%), and the heat storage process can be carried out only after the cleaning is finished.

Compared with the traditional high-temperature incineration and catalytic combustion processes, the Regenerative Thermal Oxidizer (RTO) has the characteristics of high thermal efficiency (95 percent), reliable operation and the like. When the concentration of the organic waste gas is 2-10 g/m3, no additional natural gas is needed, and the operation cost is only the power consumption of the fan.

(3) VOC (volatile organic compound) recovery process

VOCs are collected, adsorbed and concentrated by activated carbon after entering an activated carbon adsorption tank, and the purified waste gas is discharged after reaching the standard through an exhaust funnel by an explosion-proof centrifugal fan. And stopping sucking the organic waste gas after the organic matters adsorbed by the activated carbon reach a saturated state. In order to ensure the safety of system analysis, nitrogen is used for purging the analysis system before analysis so as to remove oxygen in the system. Then the hot nitrogen is fed into the activated carbon bed to blow off the activated carbon bed, so that the organic matters are desorbed from the activated carbon, and the activated carbon in the tank recovers the activity, namely regeneration. And the desorbed high-concentration gas enters a condenser for condensation and recovery, and the condensed and recovered liquid solvent enters a solvent separation tank for separation and then is mechanically used or externally co-processed. Through the desorption of the hot nitrogen for a certain time, the organic matters in the activated carbon are basically volatilized, thereby achieving the purpose of desorption regeneration. And after the thermal nitrogen desorption is finished, cooling the activated carbon bed layer and then waiting for carrying out the next period of adsorption. The bed layer cooling medium adopts common cooling water.

The commonly used technology for controlling the malodorous pollution and degrading the VOC is selected according to the type and the characteristics of the waste gas. However, the components of the industrial waste gas are complex, and in practical application, many devices are not perfect in design, so that the use effect is not satisfactory. These conventional methods have great limitations, and therefore, it is necessary to develop a general exhaust gas treatment technology. Generally, the method has the problems of low treatment capacity, low treatment rate, high energy consumption, large equipment volume and the like.

In view of the above, there is an urgent need to design a new exhaust treatment method to overcome the above-mentioned defects of the existing exhaust treatment methods.

SUMMERY OF THE UTILITY MODEL

The utility model provides a continuation active carbon adsorption device can shorten the period of adsorbing again, and the treatment range is wide, and the treatment effeciency is high.

For solving the technical problem, according to the utility model discloses an aspect adopts following technical scheme:

a persistent activated carbon adsorption device, the adsorption device comprising: the device comprises a shell and at least one activated carbon mechanism arranged in the shell;

the active carbon mechanism comprises a first main electrode, a second main electrode and an active carbon layer; the second main electrode forms a frame structure, and the formed frame structure covers the activated carbon layer;

the first main electrode is arranged at a first end of the frame structure; the first main electrode is connected with a positive electrode wire, and the positive electrode wire penetrates through the activated carbon layer to reach the second end of the frame structure and then is connected with the positive electrode of the transformer; the second main electrode is connected with the shell so as to be connected with the negative electrode of the transformer;

the shell is provided with a waste gas inlet and a gas outlet, and the waste gas inlet is provided with a first filter layer; the shell forms an electric field in the action of the first main electrode and the second main electrode.

As an embodiment of the present invention, the first main electrode is an anode, and the second main electrode is a cathode.

The utility model discloses an in the embodiment, continuation adsorption equipment has utilized electric field electrolysis and has combined together with the active carbon, and one end becomes the positive pole in the active carbon reaction layer, and the other end is the negative pole, can take place reduction reaction and oxidation respectively at the negative pole position and the positive pole position of active carbon, adsorbs the organic matter on the active carbon most consequently and decomposes.

In an embodiment of the present invention, the activated carbon is filled between two main electrodes, and a dc electric field is applied between the two main electrodes, so that the activated carbon is polarized under the action of the electric field, and most of the organic substances adsorbed on the activated carbon are decomposed, and the small part of the organic substances is desorbed due to the action of the electrophoretic force.

The beneficial effects of the utility model reside in that: the utility model provides a continuation active carbon adsorption device can shorten the period of adsorbing again, and the treatment range is wide, and the treatment effeciency is high. The utility model discloses continuation active carbon adsorption device can utilize the active carbon lastingly, has avoided the useless production of regeneration, the danger of active carbon, the waste of resource.

Compared with the existing fixed bed adsorption recovery, the utility model discloses a continuation active carbon adsorption equipment characteristics: (1) the range of the waste gas adsorption is wide, and secondary water pollution is less; (2) the period of re-adsorption of the device can be greatly shortened. Compared with the existing activated carbon fiber adsorption regeneration system, the system has small pressure drop (800Pa) and low ventilation power consumption; (3) for organic matter treatment, the running cost of the system is mainly power consumption, and the system can be designed to be fully automatic unattended; (4) the single machine throughput can be up to 10000m 3/h. The treatment efficiency can reach more than 90 percent; (5) the device has the advantages of wide treatment range, high treatment efficiency, energy conservation, small volume, simple and convenient operation and the like, and is flexible in configuration; (6) the regeneration of the active carbon, the generation of dangerous waste and the waste of resources are avoided.

Drawings

Fig. 1 is a schematic structural diagram of a persistent activated carbon adsorption device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of an activated carbon mechanism according to an embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention.

The description in this section is for exemplary embodiments only, and the present invention is not limited to the scope of the embodiments described. The same or similar prior art means and some technical features of the embodiments are mutually replaced and are also within the scope of the description and the protection of the invention.

The utility model discloses a continuous activated carbon adsorption device, wherein fig. 1 is a schematic structural diagram of the continuous activated carbon adsorption device in an embodiment of the utility model, and fig. 2 is a schematic structural diagram of an activated carbon mechanism in an embodiment of the utility model; referring to fig. 1 and 2, in an embodiment of the present invention, the adsorption device includes: the device comprises a shell 1 and at least one activated carbon mechanism 2 arranged in the shell 1.

The activated carbon mechanism 2 comprises a first main electrode 22, a second main electrode 23 and an activated carbon layer 21; the second main electrode 23 forms a frame structure that covers the activated carbon layer 21. The first main electrode 22 is arranged at a first end of the frame structure; the first main electrode 22 is connected with a positive electrode wire 24, and the positive electrode wire 24 penetrates through the activated carbon layer 21 to reach the second end of the frame structure and then is connected with the positive electrode of the transformer; the second main electrode 23 is connected to the housing 1 and thus to the negative pole of the transformer. In an embodiment of the present invention, the first main electrode 22 is an anode, and the second main electrode 23 is a cathode.

The shell 1 is provided with a waste gas inlet 11 and a gas outlet 12, and the waste gas inlet 11 is provided with a first filter layer 13; the housing forms an electric field within the action of the first main electrode 22 and the second main electrode 23.

The utility model discloses an in the embodiment, continuation adsorption equipment's inlet and outlet end utilizes the principle of air current, has set up the reducing mouth, does benefit to gaseous even velocity of flow. The inlet end of the continuous adsorption device is provided with a filter layer, so that particles are effectively filtered, and the particles are protected from entering a reaction zone of the electric field activated carbon layer.

The utility model discloses an in the embodiment, one end becomes the positive pole in the active carbon reaction layer, and the other end is the negative pole, forms little electrolysis trough, takes place reduction reaction and oxidation respectively at the negative pole position and the positive pole position of active carbon, adsorbs the organic matter on the active carbon most consequently and decomposes. Because the active carbon is filled between the two main electrodes, a direct current electric field is applied to the electrolyte, the active carbon is polarized under the action of the electric field, most of organic matters adsorbed on the active carbon are decomposed, and a small part of organic matters are desorbed under the action of the electrophoretic force. The utility model is suitable for a waste gas adsorbs technical field.

The utility model discloses an in the embodiment, continuation adsorption equipment has utilized electric field electrolysis and active carbon to combine together, and one end becomes the positive pole in the active carbon reaction layer, and the other end is the negative pole, can take place reduction reaction and oxidation respectively at the negative pole position and the positive pole position of active carbon, adsorbs the organic matter on the active carbon most consequently and decomposes.

In an embodiment of the utility model, the nature adsorption equipment that lasts designs the regeneration of multilayer active carbon, and the electrolytic influence factor in the technology, regenerative current and regeneration time can carry out online operation to the electrochemical regeneration of active carbon, and convenient operation and efficient, the energy consumption is low, avoids secondary pollution.

To sum up, the utility model provides a continuation active carbon adsorption device can shorten the period of adsorbing again, and the treatment range is wide, and the treatment effeciency is high. The utility model discloses continuation active carbon adsorption device can utilize the active carbon lastingly, has avoided the useless production of regeneration, the danger of active carbon, the waste of resource.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The description and applications of the present invention are illustrative and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are possible, and alternative and equivalent various components of the embodiments will be apparent to those skilled in the art. It will be clear to those skilled in the art that the present invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the present invention.

Claims

1. A persistent activated carbon adsorption device, comprising: the device comprises a shell and at least one activated carbon mechanism arranged in the shell;

2. The continuous activated carbon adsorption unit of claim 1, wherein:

the first main electrode is an anode and the second main electrode is a cathode.