CN213453663U - Medical hazardous waste incineration device - Google Patents

Abstract

The utility model discloses a medical hazardous waste incineration device, which comprises a combustion chamber, a secondary combustion chamber, a tail gas treatment unit and a chimney which are connected in series in sequence; the utility model discloses a combustion chamber, including combustion chamber transversely arranged, one end, the air-blower is connected to the air inlet duct, and medical treatment danger is useless and is stirred the propulsion by the stirring system in transversely arranged's combustion chamber inside, has prolonged the time that medical treatment danger is useless and has stopped at the inside time that stops of combustion chamber, evenly provides fresh air through air inlet duct and combustion chamber inside, has guaranteed the comprehensive thorough combustion effect of medical treatment danger, reduces and burns the heat load, improves incineration efficiency, can carry out artifical ash removal through the air inlet duct after the blowing out, and the lime-ash is got rid of simply along the combustion chamber transversely to the other end and two combustion chambers intercommunication, inside along the combustion chamber transversely being equipped with propulsion mixing system, the bottom of combustion chamber sets up the combustion chamber carrier plate that has the gas distribution hole, the combustion chamber passes through the gas.

Description

Medical hazardous waste incineration device

Technical Field

The utility model belongs to the useless minimizing innocent treatment technique of medical treatment danger, concretely relates to useless incineration device of medical treatment danger.

Background

The medical hazardous waste is a hazardous waste product with strong pollution, harmfulness and fatality. The medical hazardous waste contains a large amount of pathogenic bacteria, viruses and other pollutants, has extremely strong infectivity and biotoxicity, and has far more harm than common household garbage. Improper medical treatment can not only cause pollution to water, atmosphere and soil, but also cause outbreak and infection of infectious diseases due to medical hazardous wastes carrying a large amount of germs, and seriously harm human health. Therefore, timely and effective safe treatment of medical hazardous wastes is an essential measure. Incineration technology is currently the most effective safe disposal technology. However, in the conventional hazardous medical waste incinerator, such as the odorless incinerator for medical waste disclosed in the chinese patent application with application number 201721179184.8, the hazardous medical waste is accumulated in the incinerator to be combusted, and the problems of too high thermal load, short contact time between air and hazardous medical waste, small contact area and the like exist, resulting in insufficient combustion of the hazardous medical waste.

Disclosure of Invention

The utility model provides a technical problem be: the useless insufficient defect of burning of medical treatment danger that burns that incineration equipment exists is useless to current medical treatment danger, provides a novel useless incineration device of medical treatment danger.

The utility model discloses a following technical scheme realizes:

the medical hazardous waste incineration device comprises a combustion chamber, a secondary combustion chamber, a tail gas treatment unit and a chimney which are sequentially connected in series; the combustion chamber transverse arrangement, one end are equipped with the feed inlet, and the other end and two combustion chambers intercommunication, inside transversely are equipped with along the combustion chamber and impel mixing system, the bottom setting of combustion chamber has the combustion chamber carrier plate of cloth gas pocket, the combustion chamber passes through cloth gas pocket and air inlet duct intercommunication on the combustion chamber carrier plate, the air-blower is connected to the air-supply duct, and medical treatment danger is useless and is stirred the propulsion by impelling mixing system in transverse arrangement's combustion chamber is inside, has prolonged the time that medical treatment danger is useless and at the inside dwell of combustion chamber, combines to carry out evenly through air inlet duct and combustion chamber and provides fresh air, has guaranteed the useless comprehensive thorough combustion effect of medical treatment danger.

In the medical treatment danger waste incineration device of the scheme, further, the air inlet duct is transversely arranged at the bottom of the combustion chamber, the combustion chamber bearing plate separates the interior of the combustion chamber from the air inlet duct, and through the air distribution holes in the combustion chamber bearing plate, the air inlet duct can also collect ash residues generated after medical treatment danger waste combustion in the combustion chamber.

In the medical hazardous waste incineration device adopting the scheme, further, the air inlet duct forms an included angle of 1-5 degrees with the horizontal direction downwards.

Among the useless incineration device of medical treatment danger of above-mentioned scheme, it is further, impel the mixing system to include the axis of rotation, rotate harrow and driving motor, the axis of rotation is equipped with a plurality ofly on it and carries out the rotation harrow that stirs to getting into the useless medical treatment danger of combustion chamber inside along horizontal rotation assembly inside the combustion chamber, driving motor installs in the combustion chamber outside and is connected with axis of rotation transmission.

In the medical hazardous waste incineration device of the scheme, further, the rotating rake is provided with a plow-shaped inclined plane which pushes the medical hazardous waste forwards along the axial direction in the rotating process, and the axial component force generated when the medical hazardous waste acts on the plow-shaped inclined plane pushes the medical hazardous waste to be pushed axially in the combustion chamber.

Among the useless incineration device of medical treatment danger of above-mentioned scheme, it is further, the combustion chamber carrier plate is semicircle curved surface, forms the cylinder passageway of combustion chamber with the wall connection on the combustion chamber, the coaxial setting of the barrel axis that axis of rotation and combustion chamber carrier plate and combustion chamber upper wall enclose, the axis of rotation drives rotation rake on it and presses close to combustion chamber carrier plate and combustion chamber upper wall and rotates, improves the useless stirring of the inside medical treatment danger of combustion chamber and impels the effect.

In the medical treatment danger waste incineration device of above-mentioned scheme, further, the air distribution hole is evenly arranged at the projection area who corresponds the combustion chamber to the combustion chamber carrier plate, guarantees that the region of air distribution hole covers the combustion chamber inside all, and it is even to improve the inside combustion air of combustion chamber, and the ash sediment that guarantees the inside optional position burning of combustion chamber and produce can both drop the air inlet duct through the air distribution hole.

The utility model discloses an among the useless incineration device of medical treatment danger, be equipped with the draught fan between tail gas processing unit and the chimney, to the inside little negative pressure that forms of combustion chamber, carry out the drainage to the waste gas after the useless burning of medical treatment danger and discharge.

In the useless incineration device of medical treatment danger of above-mentioned scheme, it is further, combustion chamber combustor and second combustion chamber are inside to be equipped with combustion chamber combustor and second combustion chamber combustor respectively, ignite the useless dioxin that gets into the medical treatment danger of combustion chamber and get into in the second combustion chamber waste gas respectively.

The utility model discloses a medical treatment danger is useless burns device has following beneficial effect:

1. because of the micro negative pressure combustion environment inside the combustion chamber, the material can be continuously fed, thereby reducing the incineration heat load and improving the incineration efficiency;

2. medical hazardous waste in the combustion chamber is pushed and conveyed in the process of circumferential swinging through the rotary rake, the medical hazardous waste is obviously disturbed in the combustion chamber, the combustion chamber is transversely arranged, the medical hazardous waste stays in the combustion chamber for a longer time, and the inlet air is fully contacted with the medical hazardous waste, so that the combustion is full, and the incineration efficiency of the medical hazardous waste is high;

3. the hole on the combustion chamber bearing plate in the combustion chamber is used as an air distributor, and the air distribution area is large and uniform, so that the combustion efficiency of medical hazardous wastes in the combustion chamber is improved;

4. after medical treatment dangerous waste combustion, residual ash can fall into the air inlet duct from the opening on the combustion chamber bearing plate, manual ash removal can be carried out through the air inlet duct after furnace shutdown, and ash removal is simple.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a front schematic view of a medical hazardous waste incineration device of an embodiment.

FIG. 2 is a schematic side view of the internal structure of the combustion chamber in the embodiment.

FIG. 3 is a top view of a combustor carrier plate in an embodiment.

Reference numbers in the figures: 1-a feed inlet, 2-a combustion chamber, 3-an air inlet duct, 4-a secondary combustion chamber, 5-a tail gas treatment unit, 6-an induced draft fan, 7-a chimney, 8-a combustion chamber burner, 9-an air blower, 10-a rotating shaft, 11-a rotating rake, 12-a driving motor, 13-a combustion chamber bearing plate and 14-a secondary combustion chamber burner.

Detailed Description

Examples

Referring to fig. 1-3, the medical hazardous waste incineration device in the figure is a specific embodiment of the present invention, and specifically includes a feeding port 1, a combustion chamber 2, an air inlet duct 3, a secondary combustion chamber 4, a tail gas treatment unit 5, an induced draft fan 6, a chimney 7, a combustion chamber burner 8, an air blower 9, a rotating shaft 10, a rotating rake 11, a driving motor 12, a combustion chamber carrier plate 13 and a secondary combustion chamber burner 14.

Combustion chamber 2, second combustion chamber 4, tail gas processing unit 5 and chimney 7 are series connection in proper order, combustion chamber 2 accepts medical treatment danger and gives up and burns it, second combustion chamber 4 carries out the secondary heating burning to the waste gas that burns the useless production of medical treatment danger in the combustion chamber, get rid of harmful substance such as dioxin that produces in the waste gas, tail gas processing unit 5 cools down waste gas, remove dust, after handling such as deodorization, discharge waste gas through chimney 7, be equipped with draught fan 6 on the connecting pipeline between tail gas processing unit 5 and chimney 7, draught fan 6 takes out the air current from tail gas processing unit to the chimney incessantly, waste gas after burning medical treatment danger carries out the drainage and discharges, and with combustion chamber 2 and the inside little negative pressure environment that forms of second combustion chamber 4.

Specifically, combustion chamber 2 in this embodiment adopts horizontal structure, wholly along horizontal direction transverse arrangement, one end sets up feed inlet 1, the other end is through setting up exhaust port and two combustion chambers 4 intercommunication, combustion chamber 2's inside transversely is equipped with along the combustion chamber and impels mixing system, the medical treatment danger is useless through inside feed inlet 1 gets into 2 one ends of combustion chamber, 2 inside combustion chamber combustors 8 that carry out the heating to 2 inside combustion chambers that are equipped with of combustion chamber, combustor 8 arranges on the combustion chamber inner wall of feed inlet 1 below, the medical treatment danger that gets into combustion chamber 2 is useless at first by 8 ignition burning of combustor, the medical treatment danger of burning is useless when turning over the stirring through impel mixing system realization, with the useless edge transverse direction of medical treatment danger impels to the inside other end of combustion chamber to carry, make the useless intensive combustion that stirs of stirring of medical treatment danger.

Set up combustion chamber carrier plate 13 in the bottom of combustion chamber 2, combustion chamber carrier plate 13 is useless at 2 inside supporting inner walls of combustion chamber as medical treatment danger, be equipped with a plurality of cloth gas holes on combustion chamber carrier plate 13, 2 inside cloth gas holes and the 3 intercommunications of air inlet duct through on the combustion chamber carrier plate 13 of combustion chamber, be equipped with air-blower 9 on the air inlet duct 3, air-blower 9 blows outside air to air inlet duct 3, inside and evenly distributed of air entering combustion chamber through the cloth gas hole on combustion chamber carrier plate 13, the useless combustion process in combustion chamber inside of supplementary medical treatment danger.

The air inlet duct 3 of this embodiment combines to arrange with combustion chamber 2, and air inlet duct 3 transversely arranges in 2 bottoms of combustion chamber to with 2 fixed connection of combustion chamber, combustion chamber carrier plate 13 separates combustion chamber 2 inside and air inlet duct 3 between, and air inlet duct 3 directly is located the bottom of combustion chamber 2 like this, and the lime-ash that the medical treatment danger in combustion chamber 2 was useless produces after the burning can directly fall into air inlet duct 3 through the cloth gas pocket on the combustion chamber carrier plate 13 and collect in unison. The left end of the air inlet duct 3 is connected with an air blower 9, air is slightly downward, and an included angle between the air inlet duct and the horizontal direction is 1-5 degrees.

The propelling and stirring system arranged inside the combustion chamber 2 specifically comprises a rotating shaft 10, a rotating rake 11 and a driving motor 12, wherein the rotating shaft 10 is rotatably assembled inside the combustion chamber 2 along the transverse direction, the rotating shaft 10 positioned inside the combustion chamber is fixedly provided with the rotating rake 11 along the radial direction, the driving motor 12 is arranged outside the combustion chamber and is connected with the rotating shaft 10 through transmission parts such as a coupler or a speed reducer, and the driving motor 12 drives the rotating shaft 10 to rotate to drive all the rotating rakes 11 on the driving shaft to overturn and stir medical hazardous wastes entering the combustion chamber 2. In order to further realize the effect of transversely conveying and pushing the medical hazardous waste by the rotary rake 11 in the turning process, the surface of the rotary rake 11 facing the medical hazardous waste is provided with a plow-shaped inclined surface, so that in the process of rotating the rotary rake 11 along the circumferential direction, a component force pushing the medical hazardous waste forwards along the axial direction can be generated, and the medical hazardous waste is pushed to be conveyed axially in the combustion chamber while being stirred.

Specifically, as shown in fig. 2 and fig. 3, a cylindrical space is formed inside the combustion chamber 2 in the embodiment, the upper wall inside the combustion chamber 2 is a semicircular curved surface, the combustion chamber support plate 13 at the bottom is also a semicircular curved plate body, the semicircular curved surface of the upper wall inside the combustion chamber and the semicircular curved surface of the combustion chamber support plate 13 are connected to form a cylindrical space inside the combustion chamber, the rotating shaft 10 of the propulsion stirring system and the cylindrical channel of the combustion chamber 2 are coaxially assembled, the distal ends of all the rotating rakes 11 on the rotating shaft 10 are located on the same cylindrical curved surface, a gap is reserved between the distal end of each rotating rake 11 and the upper wall inside the combustion chamber and the inner wall of the combustion chamber support plate 13 in the rotating process, the gap is 1-2mm, and the rotating speed of each rotating rake 11 is 0-10 r/. The rotating shaft 10 drives the rotating rake 11 thereon to rotate close to the combustion chamber bearing plate and the upper wall of the combustion chamber, so that the stirring and propelling effect on medical treatment hazardous waste in the combustion chamber is improved.

The length of the air inlet duct 3 is equal to that of the combustion chamber 2, the combustion chamber bearing plate 13 is the top of the air inlet duct 3, and the combustion chamber bearing plate 13 is uniformly provided with air distribution holes on the projection area corresponding to the combustion chamber and the projection area of the air inlet duct 3, so that the inside of the air inlet duct 3 and the inside of the combustion chamber 2 are completely butted and covered, thereby improving the uniform air inlet of the air inlet duct 3 to the inside of the combustion chamber 2 and ensuring that ash slag generated by combustion at any position inside the combustion chamber 2 can fall into the air inlet duct 3 through the air distribution holes.

The combustor burner 8 arranged in the combustor 2 adopts diesel oil and is used for heating the interior of the combustor and igniting medical hazardous waste, and the combustion temperature of the combustor is guaranteed to be more than or equal to 850 ℃.

The secondary combustion chamber 4 adopts a cylindrical structure, a secondary combustion chamber combustor 14 is installed at the right end of the secondary combustion chamber 4, the fuel of the secondary combustion chamber combustor 14 adopts diesel oil or natural gas and is used for removing soot which is not burnt out in dioxin and flue gas through secondary combustion, the combustion temperature of the secondary combustion chamber 4 is guaranteed to be larger than or equal to 1100 ℃, the retention time is guaranteed to be larger than or equal to 2s, and the 3T principle is met.

The tail gas treatment unit 5 comprises a desulfurization and denitrification module adopting calcium hydroxide as a desulfurization machine and a quenching module for treating residual dioxin in tail gas, and a dust removal module can be added if more smoke particles are generated after incineration in practical application. The modules are mature modules in the prior art, and can be obtained by selective purchasing in the market, and the specific structure of each module is not described in detail in the embodiment.

The medical hazardous waste incineration treatment process of the embodiment is as follows: before the medical hazardous waste is put into use, an air blower 9, a second combustion chamber burner 14, an induced draft fan 6 and a driving motor 12 are started. At the moment, the blower 9 starts blowing air, the rotating shaft 10 starts to drive the rotating rake 11 to rotate, the temperature of the secondary combustion chamber 4 rises, and the combustion chamber 2 and the secondary combustion chamber 4 start to form micro negative pressure. The inlet air in the blower 9 flows through the air inlet duct 3, enters the combustion chamber 2 through the air distribution holes on the combustion chamber bearing plate 13, passes through the secondary combustion chamber 4, the tail gas treatment unit 5 and the induced draft fan 6 again, and is finally discharged into the atmosphere through the chimney 7. When the air intake of the combustion chamber, the rotating speed of the rotating shaft, the combustion temperature of the secondary combustion chamber and the negative pressure value of the combustion chamber reach preset values, the medical hazardous wastes are put into the combustion chamber.

Medical treatment danger is useless to be put into from feed inlet 1, gets into in the combustion chamber 2. The medically hazardous waste is ignited in the combustion chamber 2 by the combustion chamber burner 8. After the medical waste is ignited, the combustor burner 8 is turned off and combustion is maintained by means of the intake air from the blower 9. In the process of burning the medical hazardous wastes, the rotary rake 11 overturns to stir the medical hazardous wastes to rise and fall, and moves forwards in the combustion chamber 2. The medical hazardous waste is gradually burnt out in the forward moving process, and residual ash falls into the air inlet duct 3 through the air distribution holes on the combustion chamber bearing plate 13. And manually cleaning ash after blowing out.

The medical hazardous waste in the combustion chamber 2 is combusted to generate smoke, and the smoke can only flow to the secondary combustion chamber 4 due to the micro-negative pressure environment. After dioxin is removed from the flue gas in the secondary combustion chamber 4, the flue gas flows to a tail gas treatment unit 5 for tail gas purification treatment, and the purified flue gas is discharged into the atmosphere through an induced draft fan 6 and a chimney 7.

And when the medical treatment danger is completely burnt, stopping the furnace, and closing the air blower 9, the second combustion chamber burner 14, the induced draft fan 6 and the driving motor 12. And when the temperature in the combustion chamber 2 and the second combustion chamber 4 is reduced to the normal temperature, the furnace shutdown operation is finished.

After the furnace is stopped, the ash is manually cleaned, and the ignition loss of the ash is less than 5 percent.

The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims (9)

1. Medical treatment danger is useless burns device, its characterized in that: the device comprises a combustion chamber, a secondary combustion chamber, a tail gas treatment unit and a chimney which are sequentially connected in series;

the combustion chamber is transversely arranged, one end is equipped with the feed inlet, and the other end and second combustion chamber intercommunication are inside transversely to be equipped with along the combustion chamber and impel mixing system, the bottom of combustion chamber sets up the combustion chamber carrier plate that has the cloth gas pocket, the combustion chamber passes through cloth gas pocket and air inlet duct intercommunication on the combustion chamber carrier plate, the air-blower is connected to the air inlet duct.

2. The medical hazardous waste incineration device of claim 1, wherein: the air inlet duct is transversely arranged at the bottom of the combustion chamber, and the combustion chamber bearing plate separates the interior of the combustion chamber from the air inlet duct.

3. The medical hazardous waste incineration device of claim 2, wherein: the air inlet duct is downward and forms an included angle of 1-5 degrees with the horizontal direction.

4. The medical hazardous waste incineration device of claim 1, wherein: the propulsion stirring system comprises a rotating shaft, a rotating rake and a driving motor, wherein the rotating shaft is assembled inside the combustion chamber along transverse rotation, a plurality of rotating rakes for stirring medical hazardous waste entering the combustion chamber are arranged on the rotating shaft, and the driving motor is installed outside the combustion chamber and is in transmission connection with the rotating shaft.

5. The medical hazardous waste incineration device of claim 4, wherein: the rotary harrow is provided with a plow-shaped inclined plane which pushes medical hazardous wastes forwards along the axial direction in the rotating process.

6. The medical hazardous waste incineration device of claim 5, wherein: the combustion chamber carrier plate is the semicircle curved surface, is connected the cylinder passageway that forms the combustion chamber with the combustion chamber upper wall, the axis of rotation sets up with the barrel axis that combustion chamber carrier plate and combustion chamber upper wall enclose coaxially.

7. The medical hazardous waste incineration device of claim 6, wherein: the combustion chamber bearing plate is uniformly provided with air distribution holes in the projection area corresponding to the combustion chamber.

8. The medical hazardous waste incineration device of any one of claims 1-7, wherein: and an induced draft fan is arranged between the tail gas treatment unit and the chimney.

9. The medical hazardous waste incineration device of claim 8, wherein: and a combustion chamber combustor and a secondary combustion chamber combustor are respectively arranged in the combustion chamber and the secondary combustion chamber.

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