CN112999842B - Microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device - Google Patents
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- B01D53/34—Chemical or biological purification of waste gases
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Abstract
The invention provides a microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device, and relates to the technical field of hydrogen sulfide removal. The microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device and the control system comprise: the device comprises a hydrogen sulfide air inlet, an air inlet, an oxidation cavity, a cyclone tower and an air outlet which are sequentially connected, wherein the oxidation cavity comprises an inflow air channel and an outflow air channel, the inflow air channel is close to the hydrogen sulfide air inlet, the outflow air channel is close to the cyclone tower, active carbon and a microwave radiation cavity are arranged in the oxidation tower at intervals, a microwave source is arranged outside the microwave radiation cavity, a spray head is arranged at the top of the oxidation cavity, one end of the spray head is connected with a water tank at the bottom of the cyclone tower, and the other end of the spray head is arranged in the oxidation cavity. The invention realizes the removal of the hydrogen sulfide.
Description
Technical Field
The invention relates to the technical field of hydrogen sulfide removal, in particular to a microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device.
Background
With the increasing environmental awareness, people are paying more attention to the quality of the surrounding living environment. The hydrogen sulfide gas contained in the exhaust gas discharged from industry can cause corrosion of equipment pipelines, poisoning of catalysts, deterioration of production conditions, and cause considerable environmental pollution or even harm to human life. Therefore, the discharged hydrogen sulfide gas must be treated.
The existing treatment method for the hydrogen sulfide comprises the following steps: direct combustion, catalytic combustion, adsorption treatment, absorption treatment, microbiological treatment, traditional UV treatment, low temperature plasma, etc. However, the removal of hydrogen sulfide in the prior art requires an additional catalyst to remove hydrogen sulfide, which is inconvenient to carry out the reaction at any time.
Disclosure of Invention
The invention aims to provide a microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device for solving the problem of hydrogen sulfide removal aiming at the defects in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the embodiment of the invention is as follows:
in a first aspect, an embodiment of the present invention provides a microwave-induced activated carbon adsorption vapor desorption hydrogen sulfide removal device, including: the device comprises a hydrogen sulfide air inlet, an air inlet, an oxidation cavity, a cyclone tower and an air outlet which are sequentially connected, wherein the oxidation cavity comprises an inflow air channel and an outflow air channel, the inflow air channel is close to the hydrogen sulfide air inlet, the outflow air channel is close to the cyclone tower, active carbon and a microwave radiation cavity are arranged in the oxidation tower at intervals, a microwave source is arranged outside the microwave radiation cavity, a spray head is arranged at the top of the oxidation cavity, one end of the spray head is connected with a water tank at the bottom of the cyclone tower, and the other end of the spray head is arranged in the oxidation cavity.
Preferably, the bottom of the oxidation cavity is provided with a reflux cavity which is communicated with a water tank at the bottom of the cyclone tower.
Preferably, a metal mesh is arranged in the oxidation cavity at a position close to the spray head and the reflux cavity.
Preferably, the microwave cavity is made of a material that does not absorb microwaves, is resistant to high temperatures, and is resistant to corrosion.
Preferably, a water pump is arranged between one end of the spray head and the water tank at the bottom of the cyclone tower.
Preferably, the hydrogen sulfide gas inlet and the air gas inlet are provided with a first fan and a second fan, respectively.
In a second aspect, the embodiment of the invention also provides a control system of the microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device, which is used for controlling the microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device.
Preferably, the control system comprises: the device comprises a first hydrogen sulfide concentration sensor and a first air volume detection device which are arranged at a hydrogen sulfide air inlet, a second air volume detection device which is arranged at an air inlet, and a second hydrogen sulfide concentration sensor and a controller which are arranged at an air outlet.
The beneficial effects of the invention are as follows: the embodiment of the invention provides a microwave-induced active carbon adsorption steam desorption hydrogen sulfide removal device, which comprises: the device comprises a hydrogen sulfide air inlet, an air inlet, an oxidation cavity, a cyclone tower and an air outlet which are sequentially connected, wherein the oxidation cavity comprises an inflow air channel and an outflow air channel, the inflow air channel is close to the hydrogen sulfide air inlet, the outflow air channel is close to the cyclone tower, active carbon and a microwave radiation cavity are arranged in the oxidation tower at intervals, a microwave source is arranged outside the microwave radiation cavity, a spray head is arranged at the top of the oxidation cavity, one end of the spray head is connected with a water tank at the bottom of the cyclone tower, and the other end of the spray head is arranged in the oxidation cavity. The invention realizes the removal of the hydrogen sulfide.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a device for desorbing hydrogen sulfide by microwave-induced activated carbon adsorption steam according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a device for desorbing hydrogen sulfide by microwave-induced activated carbon adsorption steam according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control system of a microwave-induced activated carbon adsorption vapor desorption hydrogen sulfide removal device according to an embodiment of the present invention.
Icon: 1-hydrogen sulfide air inlet, 101-first fan, 2-air inlet, 201-second fan, 3-oxidation chamber, 301-inflow gas circuit, 302-outflow gas circuit, 303-active carbon, 304-microwave radiation chamber, 3041-microwave source, 305-shower nozzle, 4-cyclone tower, 5-gas outlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 is a schematic diagram of a microwave-induced activated carbon 303 adsorption vapor desorption hydrogen sulfide removal device according to an embodiment of the present invention, fig. 2 is a schematic diagram of a microwave-induced activated carbon 303 adsorption vapor desorption hydrogen sulfide removal device according to an embodiment of the present invention, and fig. 3 is a schematic diagram of a control system of a microwave-induced activated carbon 303 adsorption vapor desorption hydrogen sulfide removal device according to an embodiment of the present invention. The following will describe in detail the device for desorbing hydrogen sulfide by adsorbing steam with the activated carbon 303 by microwave induction provided in the embodiment of the present invention with reference to fig. 1 to 3.
Fig. 1 is a schematic diagram of a microwave-induced activated carbon 303 vapor desorption hydrogen sulfide removal device according to an embodiment of the present invention, as shown in fig. 1, where the microwave-induced activated carbon 303 vapor desorption hydrogen sulfide removal device includes: the hydrogen sulfide gas inlet 1, the air inlet 2, the oxidation cavity 3, the cyclone tower 4 and the gas outlet 5 that connect gradually, the oxidation cavity 3 is including inflow gas circuit 301 and outflow gas circuit 302, inflow gas circuit 301 is close to hydrogen sulfide gas inlet 1, outflow gas circuit 302 is close to cyclone tower 4, the interval sets up active carbon 303 and microwave radiation chamber 304 in the oxidation tower, microwave radiation chamber 304 outside is provided with microwave source 3041, oxidation cavity 3 top is provided with shower nozzle 305, the one end of shower nozzle 305 is connected with the water tank of cyclone tower 4 bottom, the other end of shower nozzle 305 sets up in oxidation cavity 3.
The gas enters the oxidation chamber 3 from the hydrogen sulfide gas inlet 1 and the air gas inlet 2, respectively, and sequentially passes through the inflow gas path 301 and the outflow gas path 302, and is subjected to oxidation treatment.
The oxidation chamber 3 includes an inflow gas path 301 and an outflow gas path 302, the inflow gas path 301 is close to the hydrogen sulfide gas inlet 1, the outflow gas path 302 is close to the cyclone tower 4, and the gas entering the oxidation chamber 3 passes through the inflow gas path 301 and then enters the outflow gas path 302.
activated carbon 303 can be oxidized by adsorption
The vapor can desorb elemental sulfur attached to the surface of the activated carbon 303. Specifically, under the action of microwaves, the temperature in the oxidation cavity 3 is increased, when the temperature in the oxidation cavity 3 is higher than 118 ℃, the elemental sulfur can volatilize into liquid elemental sulfur or gaseous elemental sulfur, and the liquid elemental sulfur and the gaseous elemental sulfur can be discharged from the oxidation cavity 3 along with water vapor and then enter the cyclone tower 4. The elemental sulfur and water vapor generated after oxidation can enter the cyclone tower 4 for recycling.
Wherein, the tower plate blades of the cyclone tower 4 such as fixed windmill blades generate rotation and centrifugal motion when the airflow passes through the blades, and the absorption liquid is uniformly distributed to each blade through the middle blind plate to form a thin liquid layer, and forms rotation and centrifugal effects with the upward airflow to be sprayed into tiny liquid drops to be thrown to the tower wall. The droplets are collected by gravity into a sump and flow through a downcomer to the blind zone of the next tray. The air flow to be treated with certain wind pressure and wind speed enters from the bottom of the tower and exits from the upper part. The absorption liquid enters from the upper part of the tower and exits from the lower part. The air flow and the absorption liquid do relative motion in the tower, and a water film with a large surface area is formed at the structural part of the plate of the cyclone tower 4, thereby greatly improving the absorption effect. The absorption liquid of each layer falls into the collecting tank at the edge through the cyclone centrifugation, and then enters the next layer of tower plate through the flow guide pipe to perform the absorption of the next layer.
The main mechanism is the inertial collision of dust particles with liquid drops, centrifugal separation, liquid film adhesion, etc. The tray has high opening ratio, high load, high treating capacity, low pressure drop and high operation flexibility. The gas-liquid contact time is short, and the method is suitable for the gas-phase diffusion control process, such as gas-liquid direct contact heat transfer, rapid reaction absorption and the like. Therefore, the desulfurizing agent used in the desulfurization process should be fast reaction absorption type, and is not suitable for the desulfurizing agent with slower reaction speed such as calcium carbonate.
And designing a primary spraying device at the inlet of the flue, carrying out mass transfer heat exchange on the flue gas and water mist formed by spraying arranged at the inlet flue section when the flue gas passes through the inlet flue, obtaining preliminary cooling and removing part of sulfur dioxide, and entering the absorption tower tangentially. The flue gas is accelerated and swirled in the absorption tower by a swirling pneumatic device, and smoke dust collides with the atomized absorption liquid, adheres to the absorption liquid, is condensed, centrifugally separates and the like, and is thrown to the tower wall and flows to the bottom along with the water film of the tower wall. The dust removal efficiency of the cyclone plate spray tower can reach more than 98.5 percent. Through the arrangement of the cyclone pneumatic device, the rotation times of the flue gas in the cylinder body with the same height are increased, the passing path is increased, the gas phase turbulence is severe, and the flue gas and the absorption liquid are fully collided, contacted, dissolved and absorbed in time and space.
Specifically, the cyclone tower 4 is used for purifying the gas with the liquid elemental sulfur and the solid elemental sulfur to separate the gas and the elemental sulfur.
In this embodiment, the microwave-induced activated carbon 303 adsorption vapor desorption hydrogen sulfide removal device includes: the hydrogen sulfide gas inlet 1, the air inlet 2, the oxidation cavity 3, the cyclone tower 4 and the gas outlet 5 that connect gradually, the oxidation cavity 3 is including inflow gas circuit 301 and outflow gas circuit 302, inflow gas circuit 301 is close to hydrogen sulfide gas inlet 1, outflow gas circuit 302 is close to cyclone tower 4, the interval sets up active carbon 303 and microwave radiation chamber 304 in the oxidation tower, microwave radiation chamber 304 outside is provided with microwave source 3041, oxidation cavity 3 top is provided with shower nozzle 305, the one end of shower nozzle 305 is connected with the water tank of cyclone tower 4 bottom, the other end of shower nozzle 305 sets up in oxidation cavity 3.
Preferably, in order to make the gas pressures at the bottom of the oxidation cavity 3 and the cyclone tower 4 equal, and further make the reflux cavity and the cyclone tower 4 communicate, the bottom of the oxidation cavity 3 is provided with a reflux cavity, and the reflux cavity is communicated with a water tank at the bottom of the cyclone tower 4.
When the device is operated, the liquid level of the reflux cavity and the water tank at the bottom of the cyclone tower 4 are kept consistent.
Preferably, in order to reduce microwave leakage and further reduce injury to personnel, a metal mesh is provided within the oxidation chamber 3 adjacent the showerhead 305 and the reflow chamber.
The metal mesh can reduce microwave leakage out of the oxidation cavity 3, and reduce injury to staff.
Preferably, to reduce microwave losses, the microwave cavity is made of a material that does not absorb microwaves, is resistant to high temperatures, and is resistant to corrosion.
In particular, the microwave cavity may be made of glass or ceramic or the like.
Preferably, in order to facilitate the transportation of the liquid, a water pump is provided between one end of the spray head 305 and the water tank at the bottom of the cyclone tower 4.
The water pump can provide power for the transportation of liquid, and the liquid in the water tank at the bottom of the cyclone tower 4 is transported to the spray head 305 and then sprayed into the oxidation cavity 3 through the spray head 305.
Preferably, in order to control the rate of entry of the hydrogen sulfide gas and air into the apparatus, the hydrogen sulfide gas inlet 1 and the air inlet 2 are provided with a first fan 101 and a second fan 201, respectively.
The fan is a machine which relies on input mechanical energy to raise the pressure of gas and discharge the gas, and is a driven fluid machine. Fans are the customary short for gas compression and gas conveying machinery, and generally include ventilators, blowers and wind-driven generators.
Fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains, inflating and propelling wind tunnel wind source and air cushion ship, etc.
In this embodiment, the blower is used for transporting sulfur oxides and air.
In addition, the fan is arranged at the air inlet of the sulfur oxide and the air, so that the air inlet rate can be conveniently controlled, and the air treatment rate can be further conveniently controlled.
In a second aspect, the embodiment of the invention further provides a control system of the microwave-induced activated carbon 303 adsorption steam desorption hydrogen sulfide removal device, which controls the aforementioned microwave-induced activated carbon 303 adsorption steam desorption hydrogen sulfide removal device.
In summary, the control system of the vapor desorption hydrogen sulfide removal device for adsorbing vapor by the microwave-induced activated carbon 303 controls the vapor desorption hydrogen sulfide removal device for adsorbing vapor by the microwave-induced activated carbon 303. Wherein, microwave induction active carbon 303 adsorbs steam desorption hydrogen sulfide remove device includes: the hydrogen sulfide gas inlet 1, the air inlet 2, the oxidation cavity 3, the cyclone tower 4 and the gas outlet 5 that connect gradually, the oxidation cavity 3 is including inflow gas circuit 301 and outflow gas circuit 302, inflow gas circuit 301 is close to hydrogen sulfide gas inlet 1, outflow gas circuit 302 is close to cyclone tower 4, the interval sets up active carbon 303 and microwave radiation chamber 304 in the oxidation tower, microwave radiation chamber 304 outside is provided with microwave source 3041, oxidation cavity 3 top is provided with shower nozzle 305, the one end of shower nozzle 305 is connected with the water tank of cyclone tower 4 bottom, the other end of shower nozzle 305 sets up in oxidation cavity 3.
Preferably, to facilitate detection of hydrogen sulfide concentration at multiple locations of the device, the control system includes: a first hydrogen sulfide concentration sensor and a first air quantity detection device arranged at the hydrogen sulfide air inlet 1, a second air quantity detection device arranged at the air inlet 2, and a second hydrogen sulfide concentration sensor and a controller arranged at the air outlet 5.
The concentration sensor and the air volume detection device are matched to obtain the flow of the gas, and as mentioned above, the ratio of the hydrogen sulfide gas to the oxygen is 2:1.
the sensor can monitor the concentration of the hydrogen sulfide at the air inlet and the air outlet 5 in real time, and adjust the efficiency of treating the hydrogen sulfide gas according to the concentration.
The efficiency of the hydrogen sulfide gas treatment can be adjusted by adjusting the flow ratio of the hydrogen sulfide gas to the air, or by adjusting the number of the microwave sources 3041.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device, characterized by comprising: the device comprises a hydrogen sulfide air inlet, an air inlet, an oxidation cavity, a cyclone tower and an air outlet which are sequentially connected, wherein the oxidation cavity comprises an inflow air channel and an outflow air channel, active carbon and a microwave radiation cavity are arranged at intervals inside the oxidation cavity, a spray head is arranged at the top of the oxidation cavity, one end of the spray head is connected with a water tank at the bottom of the cyclone tower, the other end of the spray head is arranged in the oxidation cavity, a backflow cavity is arranged at the bottom of the oxidation cavity, the backflow cavity is connected with the water tank at the bottom of the cyclone tower, and when the device operates, the liquid level in the backflow cavity is kept consistent with the liquid level of the water tank of the cyclone tower.
2. The microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device according to claim 1, wherein: the inflow gas circuit in the oxidation cavity is close to the hydrogen sulfide gas inlet, and the outflow gas circuit in the oxidation cavity is close to the cyclone tower.
3. The microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device according to claim 1, wherein: the microwave radiation cavity is provided with a microwave source outside, and is made of a material which does not absorb microwaves, is high-temperature resistant and corrosion resistant.
4. The microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device according to claim 1, wherein: and a metal net is arranged in the oxidation cavity and close to the spray head and the reflux cavity.
5. The microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device according to claim 1, wherein a water pump is arranged between one end of the spray head and a water tank at the bottom of the cyclone tower.
6. The microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device as claimed in claim 1, wherein the hydrogen sulfide inlet and the air inlet are provided with a first fan and a second fan, respectively.
7. A control system of a microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device, characterized in that the microwave-induced activated carbon adsorption steam desorption hydrogen sulfide removal device according to any one of claims 1 to 5 is controlled.
8. The control system of a microwave-induced activated carbon adsorption vapor desorption hydrogen sulfide removal device of claim 7, wherein the control system comprises: the device comprises a first hydrogen sulfide concentration sensor and a first air volume detection device which are arranged at the hydrogen sulfide air inlet, a second air volume detection device which is arranged at the air inlet, and a second hydrogen sulfide concentration sensor and a controller which are arranged at the air outlet.
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