CN213314172U - High dust of security gets rid of system - Google Patents
High dust of security gets rid of system Download PDFInfo
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- CN213314172U CN213314172U CN202021323979.3U CN202021323979U CN213314172U CN 213314172 U CN213314172 U CN 213314172U CN 202021323979 U CN202021323979 U CN 202021323979U CN 213314172 U CN213314172 U CN 213314172U
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Abstract
A high-safety dust removal system, a carbon circulation flow sensor is arranged at the upstream or downstream of an activated carbon path; the first carbon temperature sensor is arranged at the upstream of the active carbon feeding hole; the second carbon temperature sensor is arranged at the downstream of the active carbon discharge hole; the wind circulation flow sensor is arranged at the upstream or the downstream of the air separation gas path; the first air temperature sensor is arranged at the upstream of the air separation gas inlet; the second air temperature sensor is arranged at the downstream of the air separation gas outlet; the air outlet of the inert gas supplementing device is connected to the upstream or the downstream of the air separation path. According to the technical scheme, the temperature relation among materials in the winnowing process can be known at any time, and basic data are provided for the control of the wind temperature.
Description
Technical Field
The utility model relates to a dust gets rid of the system, concretely relates to high dust of security gets rid of system belongs to sintering activated carbon powder and handles technical field.
Background
The activated carbon flue gas purification technology has the advantage of multi-pollutant synergistic high-efficiency purification, and is suitable for complex sintering flue gas components (SO)2、NOxDust, O2The characteristics of water vapor, heavy metal) and large temperature fluctuation (110-.
The active carbon flue gas purification process comprises three major devices of an adsorption tower, a regeneration tower and a conveyor, wherein the effective height of a tower body of the adsorption tower is about 30m, the active carbon is used as an adsorbent and a catalyst to perform high-efficiency adsorption on pollutants in the adsorption tower, the active carbon adsorbing the pollutants moves from top to bottom and is sent to the regeneration tower through a conveying system for heating regeneration, the active carbon is inevitably damaged due to the actions of self-friction and analytic abrasion in the moving process, the initial columnar active carbon with complete form is changed into a fine active carbon mixture with different particle sizes, the active carbon is heated and regenerated in the analytic tower and then screened by a vibrating screen to remove a part with smaller particle size, but inevitably still active carbon with smaller particle size enters the adsorption system, and meanwhile, due to an electrostatic effect, the surface of large active carbon is covered with ultrafine carbon powder, and also into the adsorption system. It should be noted that the activated carbon pulverization rate is closely related to the circulating amount and the quality of the activated carbon, the circulating amount is related to the concentration of pollutants in the sintering flue gas, the concentration of the pollutants is high, the circulating amount of the activated carbon is large, the quality of the activated carbon is poor, and the amount of the small-particle-size carbon is large, so that the content of the ultrafine dust entering the adsorption tower is a fluctuation value.
In the process of removing the activated carbon dust, there is a risk of easy explosion due to the influence of the concentration and temperature of the activated carbon dust. Although the temperature of the activated carbon particles which are just resolved is low, when the concentration of the activated carbon powder in the air reaches a certain value, the temperature reaches 165 ℃, and then explosion can occur.
Therefore, it is an urgent technical problem for those skilled in the art to provide a highly safe dust removing method, which can monitor various parameters in the activated carbon powder removing process in real time, ensure the safe removal of the activated carbon powder, and prevent the occurrence of production accidents.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims at can real time monitoring active carbon powder get rid of each item parameter of in-process, ensure that active carbon powder gets rid of safe going on, prevent the emergence of production accident. The utility model provides a high dust removal system of security, this system includes: the device comprises a winnowing processing device, a carbon circulating flow sensor, a first carbon temperature sensor, a second carbon temperature sensor, a wind circulating flow sensor, a first wind temperature sensor, a second wind temperature sensor and an inert gas supplementing device; the carbon circulation flow sensor is arranged at the upstream or the downstream of an active carbon path of the winnowing processing device; the first carbon temperature sensor is arranged at the upstream of an active carbon feed inlet of the winnowing processing device; the second carbon temperature sensor is arranged at the downstream of an active carbon discharge port of the winnowing processing device; the wind circulation flow sensor is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device; the first air temperature sensor is arranged at the upstream of an air separation gas inlet of the air separation processing device; the second air temperature sensor is arranged at the downstream of an air separation gas outlet of the air separation processing device; the air outlet of the inert gas supplementing device is connected to the upstream or the downstream of the winnowing gas path of the winnowing processing device.
According to the utility model discloses a first embodiment provides a high dust removal system of security:
a highly safe dust removing system comprising: the device comprises a winnowing processing device, a carbon circulating flow sensor, a first carbon temperature sensor, a second carbon temperature sensor, a wind circulating flow sensor, a first wind temperature sensor, a second wind temperature sensor and an inert gas supplementing device; the carbon circulation flow sensor is arranged at the upstream or the downstream of an active carbon path of the winnowing processing device; the first carbon temperature sensor is arranged at the upstream of an active carbon feed inlet of the winnowing processing device; the second carbon temperature sensor is arranged at the downstream of an active carbon discharge port of the winnowing processing device; the wind circulation flow sensor is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device; the first air temperature sensor is arranged at the upstream of an air separation gas inlet of the air separation processing device; the second air temperature sensor is arranged at the downstream of an air separation gas outlet of the air separation processing device; the air outlet of the inert gas supplementing device is connected to the upstream or the downstream of the winnowing gas path of the winnowing processing device.
Preferably, the system further comprises: a wind temperature controller; the air temperature controller is connected with the carbon circulation flow sensor, the first carbon temperature sensor, the second carbon temperature sensor, the air circulation flow sensor, the first air temperature sensor and the second air temperature sensor through signals at a data inlet; and a control port of the air temperature controller is in signal connection with the inert gas supplementing device.
According to the utility model discloses a second embodiment provides a high dust removal system of security:
a highly safe dust removing system comprising: the device comprises a winnowing processing device, a front particle size recognition device, a rear particle size recognition device, a carbon circulation flow sensor, a wind circulation flow sensor and an active carbon flow valve; the carbon circulation flow sensor is arranged at the upstream or the downstream of an active carbon path of the winnowing processing device; the preposed particle size recognition device is arranged at the upstream of the active carbon feed inlet of the winnowing processing device; the post particle size recognition device is arranged at the downstream of the active carbon discharge port of the winnowing treatment device; the wind circulation flow sensor is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device; the activated carbon flow valve is arranged at the upstream of an activated carbon path of the winnowing processing device.
Preferably, the system further comprises: a dust concentration controller; the data inlet signal of the dust concentration controller is connected to a front particle size recognition device, a rear particle size recognition device, a carbon circulation flow sensor and an air circulation flow sensor; and a control port of the dust concentration controller is in signal connection with the activated carbon flow valve.
According to the utility model discloses a third embodiment provides an accurate desorption system of dust:
an accurate dust removal system, comprising: the multi-stage screening device is used for screening the dust material mixture, screening the dust material mixture into direct-discharge dust, dust materials to be fluidized and fast screening dust materials, discharging the direct-discharge dust from a direct-discharge opening, discharging the dust materials to be fluidized from a to-be-fluidized opening and discharging the fast screening dust materials from a fast screening opening; the direct discharging device is communicated with the direct discharging port and is used for discharging direct discharged dust outwards; the fluidized air washing chamber is communicated with the to-be-fluidized port and is used for fluidizing and removing dust with specified particle size; the fast screening air washing chamber is communicated with the fast screening opening and is used for removing dust attached to large particles;
the fluidized air washing chamber and the quick-screening air washing chamber are both the dust removal system with high safety in the first or second embodiment; high dust of security gets rid of system's selection by winnowing processing apparatus includes: the air washing main cavity, the porous air distribution plate, the air spraying mechanism and the air speed sensor; the upper end of the air washing main cavity is provided with a feeding hole; the porous air distribution plate is horizontally arranged in the air washing main cavity and supports dust materials to be fluidized; the air spraying mechanism is arranged in the air washing main cavity and is positioned below the porous air distribution plate; the wind speed sensor is arranged in the wind washing main cavity, and is positioned above the wind speed sensor.
Preferably, the straight discharging device is the high-safety dust removing system according to the first or second embodiment.
Preferably, the multi-stage screening device comprises: the device comprises a screening main body, a screening feed inlet, a screening discharge outlet, a multi-stage screening plate and a gathering conduit; the screening feed inlet is formed in the upper end face of the screening main body; the screening discharge hole is formed in the lower end face of the screening main body; the multi-stage screening plate is arranged in the screening main body, the plate surface of one end of the multi-stage screening plate is positioned below the screening feed port, and the edge of the other end of the multi-stage screening plate is positioned on one side above the screening discharge port; a plurality of groups of interval sieve pores with different apertures are arranged on the multistage sieving plate along the length direction; the straight discharge port, the port to be fluidized, the fast screen port and the interval screen holes of the multi-stage screening plate are communicated.
Preferably, the multistage screening plate is provided with a plurality of groups of interval screen holes with different apertures along the length direction, and the interval screen holes are specifically as follows: in the direction from the screening feed inlet to the screening discharge outlet, multiple groups of interval sieve holes are sequentially marked as K1, K2, K3, K4, … … and K (n-1), and the aperture of the interval sieve holes in the K1 group is r2(ii) a The aperture of the interval sieve pore of the K2 group is r3(ii) a The aperture of the interval sieve pore of the K4 group is r3… …, K (n-1) group the mesh opening of the interval is rn。
Preferably, the interval sieve pore communication of the straight discharge port, the port to be fluidized, the fast sieve port and the multi-stage sieving plate is specifically as follows: a gathering conduit for gathering the screened substances of the interval sieve pores is arranged below each group of interval sieve pores; the discharge port of the convergence duct below the K1 group is a straight discharge port; the discharge port of the convergence duct below the K2 group is a port to be fluidized; the discharge port of the convergence conduit below the K3, … … and K (n-1) groups is a fast screen port; and a fast screen opening is also arranged below the screening discharge opening, and n-2 fast screen openings are provided in total.
Preferably, the fluidizing air speed in the fluidizing air washing chamber is u2；
The fluidizing air speed of the fast screening air washing chamber is more than u2(ii) a The maximum fluidization wind speed of the fast-screening wind washing chamber is less than u3；
Wherein d is the diameter of the activated carbon powder dust to be treated, u is the fluid velocity, rho is the fluid density, mu is the fluid viscosity, rhopG is the gravity acceleration; r is2Is the minimum particle diameter, r, of the fluidized particle size interval3The maximum particle diameter in the fluidized particle size range.
When the activated carbon powder is considered to be screened, screening may be generally performed by a screen. However, since the activated carbon dust is electrostatically adsorbed on the large-sized activated carbon, it is difficult to remove the activated carbon dust simply by passing through a screen or attaching vibration. In the research and development process of the project, the active carbon dust in the active carbon material is removed in a fluidization air separation mode. In the process, the concentration of the activated carbon powder in the air is found to be more than 20g/m3When the method is used, the explosion lower limit of the activated carbon dust is reached, and the ignition point of the activated carbon dust is only 165 ℃. When the activated carbon dust reaches the lower explosion limit, the activated carbon dust is easy to oxidize and release heat due to large specific surface area. Thereby promoting the temperature of the whole activated carbon dust gas to be increased, so that the activated carbon powder with the concentration reaching the lower explosion limit is very sensitive to temperature change and can explode slightly by accident.
In solving this problem, therefore, the present application preferably considers controlling the temperature of the activated carbon dust during the fluidized air separation process. As long as the temperature of the activated carbon dust is within a safe range, no matter how the dust concentration fluctuates, the explosion of the activated carbon dust does not occur.
In the first embodiment of the present application, the activated carbon material (activated carbon granules, dust material mixture) is subjected to air separation by an air separation treatment device, and activated carbon dust of a specified particle size is screened out by fluidized air. Simultaneously respectively passing through a carbon circulation flow sensor, a first carbon temperature sensor, a second carbon temperature sensor, a wind circulation flow sensor, a first wind temperature sensor and a second wind temperature sensorThe air temperature sensor and the inert gas supplementing device monitor the circulation volume m of the active carbon in unit time in real time1Monitoring the circulation volume m of the winnowing gas in the same unit time2Monitoring the actual temperature T of the activated carbon before the winnowing treatment1 factAnd the actually measured temperature t of the winnowing gas1 factAnd monitoring the measured temperature T of the activated carbon after the winnowing treatment2 factAnd the actually measured temperature t of the winnowing gas2 fact. According to the technical scheme, the temperature relation among materials in the winnowing process can be known constantly, and basic data are provided for the control of the wind temperature.
In the first embodiment of the present application, the air temperature controller inhibits the progress of the redox reaction by blowing an inert gas into the upstream or downstream of the air classification processing apparatus through the inert gas supply apparatus in combination with data information obtained from the char circulation flow rate sensor, the first char temperature sensor, the second char temperature sensor, the air circulation flow rate sensor, the first air temperature sensor, and the second air temperature sensor.
In the second embodiment of the present application, the activated carbon material (activated carbon granules, dust material mixture) is subjected to air separation by an air separation treatment device, and fluidized air is used to screen out activated carbon dust with a specified particle size. Simultaneously, the active carbon circulation quantity m is measured in real time through a preposed particle size recognition device, a postposition particle size recognition device, a carbon circulation flow sensor, a wind circulation flow sensor and an active carbon flow valve respectively0Determining the particle size of the activated carbon before air separation treatment is less than d0Of activated carbon dust of (a)0(ii) a Determining the particle size of the activated carbon after air separation treatment is less than d0Of activated carbon dust of (a)1According to the technical scheme, the dust concentration relation in the active carbon winnowing process can be known at any time in the winnowing process, and basic data are provided for dust concentration control.
In a second embodiment of the present application, the dust concentration controller controls the amount of the activated carbon material entering the winnowing processing device through the activated carbon flow valve in combination with data information obtained from the front particle size recognition device, the rear particle size recognition device, the carbon circulation flow sensor, and the air circulation flow sensor, thereby controlling the activated carbon dust concentration.
In a third embodiment of the present application, a dust precision removal system is provided. The system firstly screens dust material mixture into direct-discharge dust, dust material to be fluidized and fast dust material through a multi-stage screening device. And the direct-discharge dust is discharged from the direct-discharge port, the dust material to be fluidized is discharged from the port to be fluidized, and the fast-screening dust material is discharged from the fast-screening port. And the directly discharged dust is directly discharged by the directly discharging device. The dust material to be fluidized enters a fluidized air washing chamber for fluidization screening and air separation treatment; and the fast screening dust material enters a fast screening air washing chamber to be subjected to fast screening dust removal treatment. The technical scheme of the application can effectively utilize the multistage screening to promote the effect of fluidization winnowing treatment, thereby improving the effect of removing dust from the activated carbon material.
In a third embodiment of the present application, both the fluidized air washing chamber and the fast screening air washing chamber are high safety dust removal systems; the high dust of security gets rid of the selection by winnowing processing apparatus of system, and whole parts are the same. However, there are some differences according to the actual working conditions. Wherein the set value of the fluidization air speed in the fluidization air washing chamber is u2And the fluidizing air speed of the fast screening air washing chamber cannot be larger than u3. To ensure that the specified active carbon dust can be removed in the fluidized air washing chamber, and only the particle size less than r can be removed in the fast screening air washing chamber3The activated carbon dust of (2).
In the third embodiment of the present application, when the inline device is a dust removing system, the fluidizing air velocity of the inline device is not less than u2. To ensure that dust entering the in-line apparatus can be completely discharged.
In a third embodiment of the present application, high pressure gas is introduced into the dust to be fluidized and the fluidizing air velocity u to the dust to be fluidized is ensured2Meeting the requirement of fluidization speed.
It should be noted that the fluidizing velocity refers to a wind speed corresponding to the upward movement of the medium against its own gravity in the fluidized state, which is called the fluidizing velocity, wherein the wind rate that does not increase the bed resistance in the circulating fluidized bed boiler is the lowest fluidizing wind rate, and the corresponding wind speed is the lowest fluidizing velocity. The fluidization state means that the medium enters the container at a certain speed to provide certain wind pressure at the bottom of the container, the partial pressure of the medium is greater than or equal to the weight of the medium on a unit section, the medium moves in a suspension state without being carried away by fluid, and a horizontal interface is required at the upper part of the medium.
Therefore, a certain fluidization wind speed is always kept in the wind washing chamber; when the dust to be fluidized of the small particles enters the air washing chamber, the small particles are immediately subjected to the buoyancy given by the fluidizing air speed, so that the small particles are separated from the dust to be fluidized of the large particles. According to the fluidization velocity in-street formula:
when the fluidization air speed is umfIn this case, the activated carbon dust particles having a particle size d will be suspended and blown. And particularly in the embodiment of the present application, the diameter of the activated carbon dust to be fluidized and sieved is set to r2And obtaining the following components according to a fluidization wind speed critical formula:
controlling the fluidization wind speed to u2Then the activated carbon dust particles with the size r can be suspended and blown up.
In the third embodiment of the application, the fast screening material is also subjected to dust removal in a fluidization treatment mode; and the minimum particle size in the fast screening dust material is larger than r3Therefore, the maximum value of the fluidizing air speed for fluidizing the fast dust screening material is u3And is greater than u2I.e. group A3, at a fluidizing air velocity of u3(ii) a According to a fluidization wind speed critical formula, the method comprises the following steps:
wherein r is3Is the A3 group particle size interval [ r3,r4]Is smallest particle ofDiameter r4Is the A3 group particle size interval [ r3,r4]The maximum particle diameter of (a).
The particle size interval of the fast screening dust material of the A4 group is [ r ]4,rn]… …, the particle size interval of the fast screening dust material of the An group is [ rn,+∞]。
In a third embodiment of the present application, the multi-stage screening device specifically includes, but is not limited to, the following components: screening main part, screening feed inlet, screening discharge gate, multistage screening board, assemble the pipe. In the prior art, there are a variety of screening arrangements available for use in multi-stage screening devices. But in order to reach the purpose of this application embodiment, the screening device that this application provided is provided with in the screening main part, screens feed inlet, screening discharge gate, multistage screening board, assembles the pipe. And discharging materials screened out by different screening areas on the multi-stage screening plate through a gathering conduit, and finally discharging part of the activated carbon particles with overlarge particle sizes from a screening discharge hole.
In a third embodiment of the present application, the multi-stage screening device has an example, which adopts a horizontal (slightly inclined) arrangement, the dust material mixture (activated carbon material) enters from the screening feed inlet and is laid on the multi-stage screening plates, the particle size of the material is changed from small to large in the process of advancing along with the screening plates, and the activated carbon dust and particles pass through the multi-stage screening plates in the corresponding particle size area and fall into the corresponding converging duct.
It should be noted that the multiple groups of interval screen holes on the multi-stage screening plate include K1, K2, K3, K4, … … and K (n-1), and the screening discharge holes for discharging the activated carbon particles exceeding the interval screen holes of the multi-stage screening plate are K1, K2, K3, K4, … … and Kn groups. The aperture of the interval sieve pore of the K1 group is r2(ii) a The aperture of the interval sieve pore of the K2 group is r3(ii) a The aperture of the interval sieve pore of the K4 group is r3… …, K (n-1) group the mesh opening of the interval is rn。
In the third embodiment of this application, multistage screening plant also further sieves fast screening dust material simultaneously, sieves into multiunit fast screening dust material to be favorable to later screening to the fast screening dust material of different particle size.
The method is characterized in that the quick screening dust material is subjected to removal of activated carbon powder by using a screening treatment process; grouping the fast dust screening materials according to the particle size, such as obtaining each group of fast dust screening materials marked as A3, A4, … … and An; then high-pressure gas is introduced into the fast dust screening materials of different groups from the bottom. Because the particle sizes of the fast dust screening materials of different groups are different, and the gaps among the activated carbon particles are different, the penetration resistance of the high-pressure gas in the fast dust screening materials of different groups is different. The smaller the diameter of the particle size of the activated carbon particles, the smaller the gaps between the activated carbon particles, and the greater the resistance to gas penetration; the larger the diameter of the particle diameter of the activated carbon particles, the larger the gaps between the activated carbon particles, and the smaller the resistance to gas passage. Therefore, in a preferred embodiment of the present application, the wind speed of the high-pressure gas introduced into the groups A3, a4, … … and An is controlled to satisfy the following relationship: u. of3＞u4＞……＞un. Namely, the method is equivalent to controlling the gas pressure values of the high-pressure gas in the A3, A4, … … and An groups to be gradually reduced, so that the energy consumption is saved while the requirement of fast screening is met.
It is important to point out that the safety problem in the winnowing process needs to be solved by considering the selection of the wind speed and the particle size (d) of the dust to be treated0) In this connection, the fluidization velocity is controlled by the process flow, and the air volume is also determined by the fluidization velocity when the apparatus parameters are fixed.
Firstly, a guiding idea for ensuring the safety of air separation treatment by controlling the temperature change in the air separation process is established.
As mentioned above, the air separation treatment device takes the ultrafine dust in the activated carbon out of the system through air or other gases, so the content of the ultrafine dust in the air flow inside the device is extremely high, the ignition point of the ultrafine carbon powder is about 165 ℃ and is far lower than the ignition point temperature of 450 ℃ of the columnar granular activated carbon, and the air separation treatment device is particularly strict in temperature control and is more sensitive to temperature. The active carbon comes from the analytic tower unloading active carbon, the analytic tower mainly has heating section, cooling section to constitute, the active carbon temperature control that gets into the selection by winnowing processing apparatus is lower generally speaking, under the air current state, can not be risky, but if the analytic tower appears unusually, the active carbon that gets into the selection by winnowing processing apparatus probably has the high temperature point, under the condition that adopts the air as the selection by winnowing air supply, the system has the combustion condition, wherein high temperature active carbon is the most likely to get into adsorption system, cause great potential safety hazard, also can get into follow-up facility along with the export of selection by winnowing pipeline, secondary harm is given birth to. Therefore, it is very important to add temperature and flow detecting devices at the inlet and outlet of the winnowing treatment device to monitor the air temperature and flow change in real time.
When air winnowing treatment is adopted, three temperature changes exist in the active carbon and the air: the temperature of the activated carbon is reduced, and the temperature of the air is increased; the temperature of the activated carbon is reduced, and the temperature of the air is rapidly increased; the temperature of the activated carbon increases and the temperature of the air increases. In the first case, the temperature of the activated carbon is lowered, and the temperature of the air is raised within the heat conservation range; in the second situation, the temperature of the activated carbon is reduced, and the temperature rise range of the air exceeds the heat conservation range; in the third case, the temperature of the activated carbon is raised, and the air temperature is raised in a range exceeding the heat conservation range.
For solid carbon particles, C + O2＝CO2The reaction belongs to a strong exothermic reaction, the reaction heat is 391.8kJ/mol, and the specific heat capacity of the activated carbon particles is C10.85kJ/(kg.k), specific heat capacity of air under outdoor C2The value was 1.004 kJ/(kg.k). Setting the temperature of the active carbon entering the winnowing treatment device to be T1The temperature of the discharged air separation treatment device is T2Air inlet temperature t1Air outlet temperature t2The circulation volume of the activated carbon is m1Air mass is m2。
The inlet carbon flow temperature of the winnowing treatment device is indirectly cooled by air in the cooling section of the desorption tower, the temperature is relatively uniform, and after winnowing treatment, the activated carbon is exposed in the air with larger flow, the temperature is reduced after heat exchange, combustion supporting reaction is possibly performed, and the temperature of the outlet activated carbon is increased. In view of the fact that the activated carbon flows fast in the winnowing treatment device and the temperature measuring point is not enough in a representative way, in the winnowing treatment device, air is in full contact with the activated carbon, so that the outlet activated carbon temperature can be calculated in a heat balance mode. It should be noted that when the initial parameters are unchanged and the temperature of the activated carbon outlet is 140 ℃, the emergency measures are directly taken.
Secondly, a guiding idea of judging safety of air separation treatment in advance by controlling the concentration of the activated carbon dust in the air separation process is established.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. according to the technical scheme provided by the application, air is taken as the origin, and the operation cost of the winnowing processing device is low;
2. according to the technical scheme provided by the application, the safety performance of the operation of the adsorption system can be improved in view of the characteristic that the ignition point of the superfine carbon powder is lower;
3. according to the technical scheme provided by the application, the blockage of the pore plate in the tower can be prevented, the running resistance of the system is reduced, and the running cost is reduced;
4. the technical scheme provided by the application can reduce the content of the superfine carbon powder taken out of the system and improve the environmental protection performance;
5. according to the technical scheme provided by the application, the activated carbon dust in the activated carbon material can be removed by high-pressure gas, so that the particle size of the removed activated carbon dust is adjustable, and the removal precision of the activated carbon dust is improved;
6. the application provides a technical scheme, when can satisfying the fast sieve demand, practice thrift the energy consumption.
Drawings
FIG. 1 is a schematic view of a process structure of a high-safety dust removing system according to a first embodiment of the example of the present invention;
FIG. 2 is a schematic view of a process structure of a high-safety dust removing system according to a second embodiment of the example of the present invention;
fig. 3 is a schematic structural diagram of a dust accurate removal system in an embodiment of the present invention.
Reference numerals:
1: a winnowing treatment device; 2: an inert gas supply device; 301: a front particle size recognition device; 302: a particle size recognition device is arranged at the rear; CTX: a carbon circulation flow sensor; CTW 1: a first carbon temperature sensor; CTW 2: a second carbon temperature sensor; CFX: a wind circulation flow sensor; CFW 1: a first wind temperature sensor; CFW 2: a second wind temperature sensor; f1: an activated carbon flow valve; s1: a multi-stage screening device; s101: a straight discharge port; s102: a port to be fluidized; s103: a fast screen port; s104: screening the main body; s105: screening the feed inlet; s106: screening a discharge hole; s107: a multi-stage screening plate; s2: a straight row device; s3: a fluidized air washing chamber; s4: a quick-screening air washing chamber; a1: air washing the main cavity; a2: a porous air distribution plate; a3: a wind-spraying mechanism; a4: and a wind speed sensor.
Detailed Description
According to the utility model discloses a first embodiment provides a high dust removal system of security:
a highly safe dust removing system comprising: the device comprises a winnowing processing device 1, a carbon circulation flow sensor CTX, a first carbon temperature sensor CTW1, a second carbon temperature sensor CTW2, a wind circulation flow sensor CFX, a first wind temperature sensor CFW1, a second wind temperature sensor CFW2 and an inert gas supplementing device 2; the carbon circulation flow sensor CTX is disposed upstream or downstream of the activated carbon path of the winnowing processing device 1; the first carbon temperature sensor CTW1 is arranged at the upstream of the active carbon feeding hole of the winnowing processing device 1; the second carbon temperature sensor CTW2 is arranged at the downstream of the active carbon discharge port of the winnowing processing device 1; the wind circulation flow sensor CFX is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device 1; the first air temperature sensor CFW1 is arranged upstream of the air classification gas inlet of the air classification processing device 1; the second air temperature sensor CFW2 is arranged downstream of the air separation gas outlet of the air separation processing device 1; the air outlet of the inert gas supplementing device 2 is connected to the upstream or the downstream of the winnowing gas path of the winnowing processing device 1.
Preferably, the system further comprises: a wind temperature controller; the data inlet signal of the air temperature controller is connected to a carbon circulation flow sensor CTX, a first carbon temperature sensor CTW1, a second carbon temperature sensor CTW2, an air circulation flow sensor CFX, a first air temperature sensor CFW1 and a second air temperature sensor CFW 2; and a control port of the air temperature controller is in signal connection with the inert gas supplementing device 2.
According to the utility model discloses a second embodiment provides a high dust removal system of security:
a highly safe dust removing system comprising: the air separation treatment device 1, a front particle size recognition device 301, a rear particle size recognition device 302, a carbon circulation flow sensor CTX, a wind circulation flow sensor CFX and an activated carbon flow valve F1; the carbon circulation flow sensor CTX is disposed upstream or downstream of the activated carbon path of the winnowing processing device 1; the front particle size recognition device 301 is arranged at the upstream of an active carbon feeding hole of the winnowing processing device 1; the post-positioned particle size recognition device 302 is arranged at the downstream of an active carbon discharge port of the winnowing processing device 1; the wind circulation flow sensor CFX is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device 1; the activated carbon flow valve F1 is arranged upstream of the activated carbon path of the air separation treatment device 1.
Preferably, the system further comprises: a dust concentration controller; the data inlet signal of the dust concentration controller is connected to a front particle size recognition device 301, a rear particle size recognition device 302, a carbon circulation flow sensor CTX and a wind circulation flow sensor CFX; and a control port of the dust concentration controller is in signal connection with an activated carbon flow valve F1.
According to the utility model discloses a third embodiment provides an accurate desorption system of dust:
an accurate dust removal system, comprising: a multi-stage screening device S1 for screening the dust mixture, the multi-stage screening device S1 screening the dust mixture into inline dust, dust to be fluidized, and fast screening dust, and discharging the inline dust from the inline port S101, the dust to be fluidized from the to-be-fluidized port S102, and the fast screening dust from the fast screening port S103; a straight discharging device S2 communicated with the straight discharging port S101 and used for discharging straight dust outwards; a fluidized air washing chamber S3 which is communicated with the to-be-fluidized opening S102 and is used for fluidizing and removing dust with specified particle size; a fast screening air washing chamber S4 which is communicated with the fast screening opening S103 and is used for removing dust attached to large particles;
the fluidized air washing chamber S3 and the fast screening air washing chamber S4 are both dust removal systems; the high dust of security gets rid of system's selection by winnowing processing apparatus 1 includes: the wind washing main cavity A1, the porous wind distribution plate A2, the wind spraying mechanism A3 and the wind speed sensor A4; the upper end of the air washing main cavity A1 is a feeding hole; the porous air distribution plate A2 is horizontally arranged in the air washing main cavity A1, and the porous air distribution plate A2 supports dust to be fluidized; the air spraying mechanism A3 is arranged in the air washing main cavity A1, and the air spraying mechanism A3 is positioned below the porous air distribution plate A2; the wind speed sensor A4 is arranged in the wind washing main cavity A1, and the wind speed sensor A4 is positioned above the wind speed sensor A4.
Preferably, the direct discharging device S2 is a dust removal system.
Preferably, the multi-stage screening device S1 includes: the screening device comprises a screening main body S104, a screening feeding port S105, a screening discharging port S106, a multi-stage screening plate S107 and a converging duct S108; the screen feed inlet S105 is arranged on the upper end face of the screen main body S104; the screening discharge hole S106 is formed in the lower end face of the screening main body S104; the multi-stage screening plate S107 is arranged in the screening main body S104, the plate surface of one end of the multi-stage screening plate S107 is positioned below the screening feed port S105, and the edge of the other end of the multi-stage screening plate S107 is positioned on one side above the screening discharge port S106; a plurality of groups of interval sieve pores with different apertures are arranged on the multi-stage sieving plate S107 along the length direction; the straight discharge port S101, the port S102 to be fluidized, the fast screen port S103 and the interval screen holes of the multi-stage screening plate S107 are communicated.
Preferably, the multistage screening plate S107 is provided with a plurality of groups of interval screen holes with different apertures along the length direction, specifically: in the direction from the screening feed inlet S105 to the screening discharge outlet S106, multiple groups of interval sieve holes are marked as K1, K2, K3, K4, … … and K (n-1) in sequence, and the aperture of the interval sieve holes in the K1 group is r2(ii) a The aperture of the interval sieve pore of the K2 group is r3(ii) a K4 instituteThe aperture of the interval sieve pore is r3… …, K (n-1) group the mesh opening of the interval is rn。
Preferably, the interval sieve pore communication among the straight discharge port S101, the to-be-fluidized port S102, the fast sieve port S103 and the multi-stage sieving plate S107 is specifically as follows: a gathering conduit S108 for gathering the screened substances of the interval sieve holes is arranged below each group of interval sieve holes; the discharge port of the gathering conduit S108 below the K1 group is a straight discharge port S101; the discharge opening of the converging duct S108 below the K2 group is a to-be-fluidized opening S102; the discharge opening of the converging duct S108 below the K3, … … and K (n-1) groups is a fast screen opening S103; and a fast screen opening S103 is also arranged below the screening discharge opening S106, and n-2 fast screen openings S103 are provided in total.
Preferably, the fluidizing air speed in the fluidizing air washing chamber S3 is u2；
The fluidizing air speed of the fast-screening air washing chamber S4 is more than u2(ii) a The maximum fluidization wind speed of the fast-screening wind washing chamber S4 is less than u3；
Wherein d is the diameter of the activated carbon powder dust to be treated, u is the fluid velocity, rho is the fluid density, mu is the fluid viscosity, rhopG is the gravity acceleration; r is2Is the minimum particle diameter, r, of the fluidized particle size interval3The maximum particle diameter in the fluidized particle size range.
Example 1
A highly safe dust removing system comprising: the device comprises a winnowing processing device 1, a carbon circulation flow sensor CTX, a first carbon temperature sensor CTW1, a second carbon temperature sensor CTW2, a wind circulation flow sensor CFX, a first wind temperature sensor CFW1, a second wind temperature sensor CFW2 and an inert gas supplementing device 2; the carbon circulation flow sensor CTX is disposed upstream or downstream of the activated carbon path of the winnowing processing device 1; the first carbon temperature sensor CTW1 is arranged at the upstream of the active carbon feeding hole of the winnowing processing device 1; the second carbon temperature sensor CTW2 is arranged at the downstream of the active carbon discharge port of the winnowing processing device 1; the wind circulation flow sensor CFX is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device 1; the first air temperature sensor CFW1 is arranged upstream of the air classification gas inlet of the air classification processing device 1; the second air temperature sensor CFW2 is arranged downstream of the air separation gas outlet of the air separation processing device 1; the air outlet of the inert gas supplementing device 2 is connected to the upstream or the downstream of the winnowing gas path of the winnowing processing device 1.
Example 2
Example 1 is repeated except that the system further comprises: a wind temperature controller; the data inlet signal of the air temperature controller is connected to a carbon circulation flow sensor CTX, a first carbon temperature sensor CTW1, a second carbon temperature sensor CTW2, an air circulation flow sensor CFX, a first air temperature sensor CFW1 and a second air temperature sensor CFW 2; and a control port of the air temperature controller is in signal connection with the inert gas supplementing device 2.
Example 3
A highly safe dust removing system comprising: the air separation treatment device 1, a front particle size recognition device 301, a rear particle size recognition device 302, a carbon circulation flow sensor CTX, a wind circulation flow sensor CFX and an activated carbon flow valve F1; the carbon circulation flow sensor CTX is disposed upstream or downstream of the activated carbon path of the winnowing processing device 1; the front particle size recognition device 301 is arranged at the upstream of an active carbon feeding hole of the winnowing processing device 1; the post-positioned particle size recognition device 302 is arranged at the downstream of an active carbon discharge port of the winnowing processing device 1; the wind circulation flow sensor CFX is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device 1; the activated carbon flow valve F1 is arranged upstream of the activated carbon path of the air separation treatment device 1.
Example 4
Example 3 is repeated except that the system further comprises: a dust concentration controller; the data inlet signal of the dust concentration controller is connected to a front particle size recognition device 301, a rear particle size recognition device 302, a carbon circulation flow sensor CTX and a wind circulation flow sensor CFX; and a control port of the dust concentration controller is in signal connection with an activated carbon flow valve F1.
Example 5
An accurate dust removal system, comprising: a multi-stage screening device S1 for screening the dust mixture, the multi-stage screening device S1 screening the dust mixture into inline dust, dust to be fluidized, and fast screening dust, and discharging the inline dust from the inline port S101, the dust to be fluidized from the to-be-fluidized port S102, and the fast screening dust from the fast screening port S103; a straight discharging device S2 communicated with the straight discharging port S101 and used for discharging straight dust outwards; a fluidized air washing chamber S3 which is communicated with the to-be-fluidized opening S102 and is used for fluidizing and removing dust with specified particle size; a fast screening air washing chamber S4 which is communicated with the fast screening opening S103 and is used for removing dust attached to large particles;
the fluidized air washing chamber S3 and the fast screening air washing chamber S4 are both dust removal systems; the high dust of security gets rid of system's selection by winnowing processing apparatus 1 includes: the wind washing main cavity A1, the porous wind distribution plate A2, the wind spraying mechanism A3 and the wind speed sensor A4; the upper end of the air washing main cavity A1 is a feeding hole; the porous air distribution plate A2 is horizontally arranged in the air washing main cavity A1, and the porous air distribution plate A2 supports dust to be fluidized; the air spraying mechanism A3 is arranged in the air washing main cavity A1, and the air spraying mechanism A3 is positioned below the porous air distribution plate A2; the wind speed sensor A4 is arranged in the wind washing main cavity A1, and the wind speed sensor A4 is positioned above the wind speed sensor A4.
Example 6
Example 5 was repeated except that the inline device S2 was a dust removal system.
Example 7
Example 6 was repeated except that the multi-stage screening apparatus S1 included: the screening device comprises a screening main body S104, a screening feeding port S105, a screening discharging port S106, a multi-stage screening plate S107 and a converging duct S108; the screen feed inlet S105 is arranged on the upper end surface of the screen main body S104; the screening discharge hole S106 is formed in the lower end face of the screening main body S104; the multi-stage screening plate S107 is arranged in the screening main body S104, the plate surface of one end of the multi-stage screening plate S107 is positioned below the screening feed port S105, and the edge of the other end of the multi-stage screening plate S107 is positioned on one side above the screening discharge port S106; a plurality of groups of interval sieve pores with different apertures are arranged on the multi-stage sieving plate S107 along the length direction; the straight discharge port S101, the port S102 to be fluidized, the fast screen port S103 and the interval screen holes of the multi-stage screening plate S107 are communicated.
Example 8
Example 7 is repeated except that the multistage screening plate S107 is provided with a plurality of groups of interval screen holes with different apertures along the length direction, specifically: in the direction from the screening feed inlet S105 to the screening discharge outlet S106, multiple groups of interval sieve holes are marked as K1, K2, K3, K4, … … and K (n-1) in sequence, and the aperture of the interval sieve holes in the K1 group is r2(ii) a The aperture of the interval sieve pore of the K2 group is r3(ii) a The aperture of the interval sieve pore of the K4 group is r3… …, K (n-1) group the mesh opening of the interval is rn。
Example 9
Example 8 is repeated, except that the interval mesh communication among the straight discharge port S101, the port to be fluidized S102, the fast screen port S103 and the multistage screening plate S107 is specifically as follows: a gathering conduit S108 for gathering the screened substances of the interval sieve holes is arranged below each group of interval sieve holes; the discharge port of the gathering conduit S108 below the K1 group is a straight discharge port S101; the discharge opening of the converging duct S108 below the K2 group is a to-be-fluidized opening S102; the discharge opening of the converging duct S108 below the K3, … … and K (n-1) groups is a fast screen opening S103; and a fast screen opening S103 is also arranged below the screening discharge opening S106, and n-2 fast screen openings S103 are provided in total.
Example 10
Example 9 was repeated except that the fluidizing air velocity in the fluidizing air-washing chamber S3 was u2；
The fluidizing air speed of the fast-screening air washing chamber S4 is more than u2(ii) a The maximum fluidization wind speed of the fast-screening wind washing chamber S4 is less than u3；
Wherein d is the diameter of the activated carbon powder dust to be treated, u is the fluid velocity, rho is the fluid density, mu is the fluid viscosity, rhopG is the gravity acceleration; r is2Is the minimum particle diameter, r, of the fluidized particle size interval3The maximum particle diameter in the fluidized particle size range.
Claims (4)
1. A high-safety dust removal system is characterized by comprising: the device comprises a winnowing processing device (1), a carbon circulation flow sensor (CTX), a first carbon temperature sensor (CTW1), a second carbon temperature sensor (CTW2), an air circulation flow sensor (CFX), a first air temperature sensor (CFW1), a second air temperature sensor (CFW2) and an inert gas supplementing device (2); the carbon circulation flow sensor (CTX) is arranged at the upstream or the downstream of the active carbon path of the winnowing processing device (1); the first carbon temperature sensor (CTW1) is arranged at the upstream of an active carbon feeding hole of the winnowing processing device (1); the second carbon temperature sensor (CTW2) is arranged at the downstream of an active carbon discharge port of the winnowing processing device (1); the wind circulation flow sensor (CFX) is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device (1); the first air temperature sensor (CFW1) is arranged at the upstream of the air separation gas inlet of the air separation processing device (1); the second air temperature sensor (CFW2) is arranged at the downstream of the air separation gas outlet of the air separation processing device (1); the air outlet of the inert gas supplementing device (2) is connected to the upstream or the downstream of the winnowing gas path of the winnowing processing device (1).
2. A highly safe dust removing system according to claim 1, further comprising: a wind temperature controller; the data inlet signal of the air temperature controller is connected to a carbon circulation flow sensor (CTX), a first carbon temperature sensor (CTW1), a second carbon temperature sensor (CTW2), an air circulation flow sensor (CFX), a first air temperature sensor (CFW1) and a second air temperature sensor (CFW 2); and a control port of the air temperature controller is in signal connection with the inert gas supplementing device (2).
3. A high-safety dust removal system is characterized by comprising: the air separation treatment device (1), the front particle size recognition device (301), the rear particle size recognition device (302), the carbon circulation flow sensor (CTX), the wind circulation flow sensor (CFX) and the activated carbon flow valve (F1);
the carbon circulation flow sensor (CTX) is arranged at the upstream or the downstream of the active carbon path of the winnowing processing device (1);
the front particle size recognition device (301) is arranged at the upstream of an active carbon feeding hole of the winnowing processing device (1);
the post particle size recognition device (302) is arranged at the downstream of an active carbon discharge port of the winnowing processing device (1);
the wind circulation flow sensor (CFX) is arranged at the upstream or the downstream of the air separation gas path of the air separation processing device (1);
the activated carbon flow valve (F1) is arranged upstream of the activated carbon path of the air separation treatment device (1).
4. A highly safe dust removing system according to claim 3, further comprising: a dust concentration controller; the dust concentration controller is connected with a front particle size recognition device (301), a rear particle size recognition device (302), a carbon circulation flow sensor (CTX) and a wind circulation flow sensor (CFX) through signals at a data inlet; and a control port of the dust concentration controller is in signal connection with an activated carbon flow valve (F1).
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| CN114850032A (en) * | 2022-05-07 | 2022-08-05 | 金易通（天津）智能装备有限公司 | Fog dry separation method and system |
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| CN114850032A (en) * | 2022-05-07 | 2022-08-05 | 金易通（天津）智能装备有限公司 | Fog dry separation method and system |
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