CN209885903U - Baking soda storage grinding and conveying device for hazardous waste incineration line - Google Patents
Baking soda storage grinding and conveying device for hazardous waste incineration line Download PDFInfo
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- CN209885903U CN209885903U CN201920081970.7U CN201920081970U CN209885903U CN 209885903 U CN209885903 U CN 209885903U CN 201920081970 U CN201920081970 U CN 201920081970U CN 209885903 U CN209885903 U CN 209885903U
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- baking soda
- grinding
- waste incineration
- conveying device
- storage
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Abstract
The utility model relates to the field of machinary, concretely relates to grinder. The utility model provides a baking soda storage grinds conveyor for endangering useless line that burns, includes a storage storehouse, and one side in storage storehouse is equipped with a milling machine. The utility model provides a baking soda storage grinding conveying device for endangering useless line of burning, through this design, replaced original slaked lime absorbent, adopt baking soda powder, baking soda granule in the storage storehouse is earlier ground through the milling machine, blows in dry-type reactor through the fan, and baking soda powder takes place rapidly with hot flue gas contact back, and the powder granule surface forms porous structure, has improved deacidification agent's specific surface area greatly, has improved reaction efficiency.
Description
Technical Field
The utility model relates to the field of machinary, specifically, relate to grinder.
Background
The hazardous waste incineration disposal system is generally divided into an incineration system, a quenching system, a flue gas purification system and the like, the flue gas generated by incineration needs to be purified and treated to meet requirements and then can be discharged, and compared with the flue gas generated by solid combustion such as waste incineration and coal-fired power plants, the flue gas generated by hazardous waste combustion has higher sulfur and chlorine contents, so that special design is needed in process selection. At present, a dry reactor system used in a flue gas purification system is composed of a slaked lime conveying system and a dry reactor, an adopted absorbent is mainly slaked lime, a venturi tube is arranged in a flue at the outlet of a quench tower, slaked lime is sprayed in by a spray nozzle, slaked lime powder is mixed with flue gas and then reacts, but slaked lime is easy to harden at the spray nozzle to cause blockage, so that acid gas in the flue gas cannot be removed in time, and the emission does not reach the standard; the reaction efficiency of the slaked lime is low, the use amount of the slaked lime needs to be increased in order to achieve the removal efficiency of the acid components in the flue gas, and as the ash fly in the hazardous waste disposal process also belongs to hazardous waste, the ash amount is increased, and the treatment cost is correspondingly increased; the incompletely reacted slaked lime enters the bag-type dust remover along with the flue gas and is adhered to the bag, so that the bag-type dust removing efficiency is reduced; calcium carbonate generated by the reaction can deposit at the bottom of the dry reactor, needs to be discharged periodically and needs to be cleaned manually; the preparation of the slaked lime is relatively troublesome, and the slaked lime is easy to absorb water and is difficult to store; the abrasion and scaling phenomena are serious, and the difficulty in equipment maintenance is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a baking soda storage grinding and conveying device for endangering useless line of burning to solve above-mentioned at least one technical problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a baking soda storage, grinding and conveying device for a hazardous waste incineration line comprises a storage bin and is characterized in that a pulverizer is arranged on one side of the storage bin;
the upper part of the pulverizer is provided with a feeding pipeline, a grinding track is arranged below the feeding pipeline, a grinding disc is arranged on the inner side of the grinding track, a hammer head for grinding sodium bicarbonate particles is arranged above the grinding disc, a grading wheel is arranged above the grinding disc, a powder outlet is arranged above the grading wheel, and one side of the pulverizer is provided with a gas inlet for blowing the ground sodium bicarbonate powder to the grading wheel;
the dry type reactor is characterized in that a discharge pipe is arranged at the powder outlet and connected with an air inlet of a fan, and the air inlet of the fan is connected with an air outlet pipe used for being connected with the dry type reactor.
The blower adopts a Roots blower.
The lower part of the storage bin is provided with a discharge opening, and a discharge valve is arranged at the discharge opening.
One side of the storage bin is provided with a weightless feeder, the discharge opening is connected with the feed inlet of the weightless feeder through a conveying device, and the discharge opening of the weightless feeder is connected with the feed inlet of the flour mill.
The taper of the discharge opening is between 55 and 75 degrees. Preferably 65.
The discharge valve adopts a star-shaped feeding valve.
The conveying device adopts a screw conveyer.
The screw conveyer comprises a motor for driving the screw shaft to rotate, and the motor adopts a variable frequency motor.
A stirring rod is arranged in the storage bin.
The utility model provides a baking soda storage grinding conveying device for endangering useless line of burning, through this design, replaced original slaked lime absorbent, adopt baking soda powder, baking soda granule in the storage storehouse is earlier ground through the milling machine, blows in dry-type reactor through the fan, and baking soda powder takes place rapidly with hot flue gas contact back, and the powder granule surface forms porous structure, has improved deacidification agent's specific surface area greatly, has improved reaction efficiency.
Drawings
Fig. 1 is a schematic view of a part of the structure of the present invention in use;
FIG. 2 is a schematic view of a part of the structure of the present invention;
fig. 3 is a schematic view of a part of the structure of the pulverizer of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 3, a baking soda storage, grinding and conveying device for a hazardous waste incineration line comprises a storage bin 1, wherein a pulverizer 6 is arranged on one side of the storage bin; the upper part of the pulverizer is provided with a feeding pipeline 11, the lower part of the feeding pipeline is provided with a grinding track 12, the inner side of the grinding track is provided with a grinding disc 13, the upper part of the grinding disc is provided with a hammer 14 for grinding sodium bicarbonate particles, the upper part of the grinding disc is provided with a grading wheel 15, the upper part of the grading wheel is provided with a powder outlet 17, and one side of the pulverizer is provided with a gas inlet 16 for blowing the ground sodium bicarbonate powder to the grading wheel; the powder outlet is provided with a discharge pipe 9 which is connected with an air inlet of a fan 7, and the air inlet of the fan is connected with an air outlet pipe 10 which is connected with a dry reactor 8. The utility model provides a baking soda storage grinding conveying device for endangering useless line of burning, through this design, replaced original slaked lime absorbent, adopt baking soda powder, baking soda granule in the storage storehouse is earlier ground through the milling machine, blows in dry-type reactor through the fan, and baking soda powder takes place rapidly with hot flue gas contact back, and the powder granule surface forms porous structure, has improved deacidification agent's specific surface area greatly, has improved reaction efficiency.
A fan is arranged at the gas inlet. The blower can be a Roots blower. So as to ensure the use effect of the equipment.
The lower part of the storage bin is provided with a discharge opening 2, and a discharge valve 3 is arranged at the discharge opening. To control the discharge of the baking soda granules.
One side of the storage bin is provided with a weightless feeder 5, the discharge opening is connected with the feed inlet of the weightless feeder through a conveying device 4, and the discharge opening of the weightless feeder is connected with the feed inlet of the flour mill. Facilitating accurate metering of the amount of baking soda entering the flue of the dry reactor.
In order to ensure the discharging effect of the baking soda particles, the taper of the discharging opening is between 55 and 75 degrees. Preferably 65.
The discharge valve adopts a star-shaped feeding valve. The amount of baking soda discharged can be controlled, thereby controlling the amount of baking soda entering the flue of the dry reactor.
The conveying device adopts a screw conveyer. The screw conveyer comprises a motor for driving the screw shaft to rotate, and the motor adopts a variable frequency motor. And further regulating the amount of the baking soda entering the flue of the dry reactor by controlling the rotating speed of the variable frequency motor.
In order to prevent the baking soda particles in the storage bin from caking and blocking, a stirring rod is arranged in the storage bin.
During the use, set up screw conveyer below the discharge opening of storage storehouse, through control inverter motor rotational speed, adjust the volume of the baking soda that gets into the flue of dry-type reactor, carry baking soda to weightless formula batcher from the storage storehouse, after weighing, baking soda is sent to the machine of grinding by vibrations batcher, and baking soda granule grinds to below 20 mu m, increases the surface area that absorbent powder and flue gas contacted, thereby improve reaction efficiency, and the baking soda powder after the grinding directly blows in the flue through roots's fan or high-pressure centrifugal fan, does not adopt current nozzle, thoroughly avoids the problem of nozzle jam. After the baking soda powder is contacted with hot flue gas, the baking soda powder is rapidly expanded, the surface of powder particles forms a porous structure, the specific surface area of the deacidification agent is greatly improved, and the specific surface area after expansion is about ten times of that before expansion, so that the baking soda powder can be rapidly and efficiently reacted with acid gas.
The utility model discloses a baking soda not only solves the jam problem as the reactant, and the deacidification is efficient simultaneously, guarantees that the useless stable continuous operation of processing system that burns of danger. Baking soda, also known as sodium bicarbonate, of formula NaHCO3, white fine crystals, has a solubility in water lower than that of sodium carbonate. It is also an industrial chemical, and the solid begins to be gradually decomposed at a temperature of more than 50 ℃ to generate sodium carbonate, carbon dioxide and water, and is completely decomposed at a temperature of 270 ℃. Sodium bicarbonate is used as deacidification agent, and is activated under the action of high-temperature flue gas, a microporous structure is formed on the surface as if popcorn is exploded, the flue gas in the flue gas fully contacts with the activated desulfurization agent to generate chemical reaction, and SO in the flue gas2And other acidic media of HCL are absorbed and purified. Meanwhile, it can remove some inorganic and organic trace substances by physical adsorption. The main reaction is as follows:
2NaHCO3+SO2＝Na2SO3+H2O+2CO2
NaHCO3+HCL＝NaCl+H2O+CO2
NaHCO3+HF＝NaF+H2O+CO2
the baking soda deacidification agent has the following advantages: generally, due to the high activity of the baking soda sorbent, a slight excess of baking soda, typically with a stoichiometric factor between 1.1 and 1.3, reduces the overspray of baking soda to 10% while meeting equivalent emissions requirements, eliminating both HCL and SO2HF and other acidic gases are combined with activated carbon, and meanwhile, heavy metals, dioxin and furan can be absorbed; high desulfurizing efficiency and the grain size of baking soda powder<20 mu m, large surface area and high reaction efficiency, the desulfurization efficiency is more than 95 percent when the chemical reaction equivalent is 1: 1, and the desulfurizer is sprayed in one time without circulation; the reaction is rapid, and the baking soda powder is fully mixed and contacted with the flue gas and is in contact with SO in the flue gas2The rapid reaction is realized, and in the reactor, the flue and the bag-type dust remover, the baking soda powder is always reacted with the SO in the flue gas2The reaction is rapid and sufficient, and can be carried out within 2 secondsProduction of by-product Na2SO4(ii) a Economy and simplicity: the deacidification agent is NaHCO3The dry powder does not need to spray water, the flue gas and the desulfurizer react under pure dry conditions, and excessive investment and maintenance cost are not needed in the treatment process; the sodium bicarbonate powder is neutral powder, has the characteristics of no corrosivity, no irritation, no toxicity and the like, and can be safely used.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (10)
1. A baking soda storage, grinding and conveying device for a hazardous waste incineration line comprises a storage bin and is characterized in that a pulverizer is arranged on one side of the storage bin;
the upper part of the pulverizer is provided with a feeding pipeline, a grinding track is arranged below the feeding pipeline, a grinding disc is arranged on the inner side of the grinding track, a hammer head for grinding sodium bicarbonate particles is arranged above the grinding disc, a grading wheel is arranged above the grinding disc, a powder outlet is arranged above the grading wheel, and one side of the pulverizer is provided with a gas inlet for blowing the ground sodium bicarbonate powder to the grading wheel;
the dry type reactor is characterized in that a discharge pipe is arranged at the powder outlet and connected with an air inlet of a fan, and the air inlet of the fan is connected with an air outlet pipe used for being connected with the dry type reactor.
2. The baking soda storage and grinding conveying device for the hazardous waste incineration line as claimed in claim 1, characterized in that the blower is a roots blower.
3. The baking soda storage and grinding conveyor for dangerous waste incineration line as claimed in claim 1, characterized in that the lower part of the storage bin is provided with a discharge opening, and the discharge opening is provided with a discharge valve.
4. The baking soda storage, grinding and conveying device for the hazardous waste incineration line as claimed in claim 3, wherein a weight loss feeder is arranged on one side of the storage bin, the discharge port is connected with a feed port of the weight loss feeder through a conveying device, and a discharge port of the weight loss feeder is connected with a feed port of the pulverizer.
5. The baking soda storage and grinding conveyor for dangerous waste incineration lines as claimed in claim 4, characterized in that the conicity of the discharge opening is between 55 ° and 75 °.
6. The baking soda storage mill conveying device for dangerous waste incineration lines as claimed in claim 4, characterized in that the conicity of the discharge opening is 65 °.
7. The baking soda storage and grinding conveying device for the hazardous waste incineration line is characterized in that the discharge valve adopts a star-shaped feeding valve.
8. The baking soda storage and grinding conveyor for hazardous waste incineration line according to claim 3, characterized in that the conveyor is a screw conveyor.
9. The baking soda storage and grinding conveying device for the hazardous waste incineration line as claimed in claim 8, wherein the screw conveyor comprises a motor for driving a screw shaft to rotate, and the motor is a variable frequency motor.
10. The baking soda storage and grinding conveyor for dangerous waste incineration line as claimed in claim 1, characterized in that a stirring rod is arranged in the storage bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081970.7U CN209885903U (en) | 2019-01-18 | 2019-01-18 | Baking soda storage grinding and conveying device for hazardous waste incineration line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920081970.7U CN209885903U (en) | 2019-01-18 | 2019-01-18 | Baking soda storage grinding and conveying device for hazardous waste incineration line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209885903U true CN209885903U (en) | 2020-01-03 |
Family
ID=69015919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920081970.7U Expired - Fee Related CN209885903U (en) | 2019-01-18 | 2019-01-18 | Baking soda storage grinding and conveying device for hazardous waste incineration line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209885903U (en) |
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2019
- 2019-01-18 CN CN201920081970.7U patent/CN209885903U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200103 Termination date: 20220118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |