CN112303630B - Biomass gasification and medical waste incineration co-production system and method - Google Patents
Biomass gasification and medical waste incineration co-production system and method Download PDFInfo
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- CN112303630B CN112303630B CN202011059413.9A CN202011059413A CN112303630B CN 112303630 B CN112303630 B CN 112303630B CN 202011059413 A CN202011059413 A CN 202011059413A CN 112303630 B CN112303630 B CN 112303630B
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- 238000002309 gasification Methods 0.000 title claims abstract description 52
- 239000002028 Biomass Substances 0.000 title claims abstract description 37
- 239000002906 medical waste Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000004056 waste incineration Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 54
- 239000000843 powder Substances 0.000 claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003546 flue gas Substances 0.000 claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 239000003610 charcoal Substances 0.000 claims description 18
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 14
- 239000002893 slag Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 238000004200 deflagration Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000006872 improvement Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000010813 municipal solid waste Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010849 combustible waste Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/02—Feeding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
- B02C7/06—Crushing or disintegrating by disc mills with coaxial discs with horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
- B02C7/16—Driving mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1006—Mills adapted for use with furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to a biomass gasification and medical waste incineration co-production system, which comprises a gasification furnace, an incinerator, a combustion chamber, a pulverizer, a pneumatic rotary mechanism and a steam boiler, wherein a flue gas outlet of the gasification furnace is communicated with a combustion chamber of the incinerator, and a flue gas outlet of the incinerator is communicated with a flue gas inlet of the combustion chamber; the flue gas outlet of the combustion chamber is communicated with the flue gas inlet of the steam boiler; the powder outlet of the pulverizer is communicated with a smoke channel of the combustion chamber; the pneumatic rotating mechanism is connected with a rotating shaft of the pulverizer to drive the rotating shaft to rotate; the steam outlet of the steam boiler is communicated with the air inlet of the pneumatic rotary mechanism, and the air outlet of the pneumatic rotary mechanism is communicated with the powder outlet of the pulverizer. The high-temperature combustible gas generated by the gasification furnace enters the incinerator, so that the medical waste can be burned in a combustion supporting manner; the flue gas, carbon powder and high-pressure steam generated by the incinerator enter a combustion chamber and are subjected to secondary proportioning and mixed combustion, so that a large amount of heat energy can be generated, and the heat energy yield is effectively improved.
Description
Technical Field
The invention relates to the technical field of treatment of medical waste and biomass, in particular to a biomass gasification and medical waste incineration co-production system and method.
Background
Biomass mainly refers to lignocellulose (lignin for short) such as straw, trees and the like, leftovers of agricultural and forestry industry, agricultural and forestry waste and the like except grains and fruits in the agricultural and forestry production process.
The annual production of crop straws in the whole country is about 6 hundred million tons, about 3 hundred million tons can be used as fuel, the annual availability of forestry waste is about 9 hundred million tons, about 3 hundred million tons can be used as energy, and the biomass is directly burnt in the prior art, so that not only resources are wasted, but also air is polluted.
Medical waste refers to waste with direct or indirect infectivity, toxicity and other harmfulness generated by medical and health institutions in medical treatment, prevention, health care and other related activities, and also comprises waste with renewable resource utilization such as outer packaging materials, disposable infusion bottles (bags) and the like, and the harmfulness is more serious than household garbage and the like.
The traditional treatment method of medical waste mainly comprises two times, wherein hazardous waste is subjected to incineration treatment methods such as high-temperature incineration, pyrolysis, plasma and the like, or sterilization treatment methods such as high-temperature steam sterilization, microwave treatment, chemical sterilization and the like are adopted, and the later treatment method is a final treatment method, and the final treatment is also required through landfill or incineration.
The incineration method is to send medical waste into a garbage incinerator as solid fuel, and under the high temperature condition, combustible components in the garbage and oxygen in the air undergo a severe chemical reaction to emit heat, so that the medical waste is converted into high-temperature combustion gas and solid residues with small amount and stable properties. The waste has the defects that resources are destroyed, the waste contains about 70% of water, the water-containing organic matters consume energy, the combustible waste releases energy, the consumed energy and the released energy are balanced in the incineration process, and the residual energy is little or negative, so that the heat value of the waste is required, combustion-supporting energy such as coal, oil and the like is consumed in the incineration, a large amount of recyclable resources are wasted, dioxin is formed in the incineration, and the air pollution is easy to cause.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a biomass gasification and medical waste incineration co-production system and method, so as to overcome the defects in the prior art.
The technical scheme for solving the technical problems is as follows: a biomass gasification and medical waste incineration co-production system comprises a gasification furnace, an incinerator, a combustion chamber, a pulverizer, a pneumatic rotary mechanism and a steam boiler, wherein a smoke outlet of the gasification furnace is communicated with a combustion chamber of the incinerator, and a smoke outlet of the incinerator is communicated with a smoke inlet of the combustion chamber; the flue gas outlet of the combustion chamber is communicated with the flue gas inlet of the steam boiler; the powder outlet of the pulverizer is communicated with a smoke channel of the combustion chamber; the pneumatic rotating mechanism is connected with a rotating shaft of the pulverizer to drive the rotating shaft to rotate; the steam outlet of the steam boiler is communicated with the air inlet of the pneumatic rotary mechanism, and the air outlet of the pneumatic rotary mechanism is communicated with the powder outlet of the pulverizer.
The beneficial effects of the invention are as follows:
the high-temperature combustible gas generated by the gasifier enters the incinerator, so that the medical waste can be burnt in a combustion-supporting manner, and the consumption of combustion-supporting energy sources such as coal and oil is reduced;
the flue gas generated by the incinerator, the carbon powder and the high-pressure steam enter a combustion chamber, and a large amount of heat energy can be generated through secondary proportioning and mixed combustion, so that the heat energy yield is effectively improved, and meanwhile, the temperature of a steam boiler is also effectively increased, and the steam boiler is favorable for subsequent power generation, heating and the like;
the charcoal powder drum/spraying system is omitted by utilizing high-pressure steam to spray the charcoal powder drum/spraying system into the combustion chamber, and in addition, the later maintenance is omitted, powder fog can be formed, and the combustion efficiency is improved;
the high-pressure steam and the pneumatic rotating mechanism are utilized to drive the pulverizer to operate, so that a motor can be omitted, the working period of the system can be prolonged, and the maintenance cost can be reduced.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the powder outlet of the pulverizer is communicated with the flue gas outlet of the gasifier.
The adoption of the method has the further beneficial effects that: part of carbon powder can be brought into the incinerator by utilizing high-temperature combustible gas generated by the gasifier so as to burn the medical waste in a combustion-supporting manner, so that the consumption of combustion-supporting energy sources such as coal, oil and the like is reduced, powder fog can be formed, and the combustion efficiency is improved.
Further, the pneumatic rotating mechanism comprises a cylinder, a main shaft, an impeller and a nozzle, wherein the impeller is arranged in an inner cavity of the cylinder, the main shaft is arranged on the impeller in a penetrating way, two ends of the main shaft respectively penetrate out of the cylinder, an air inlet is formed in a wall of the cylinder, which is opposite to blades of the impeller, the nozzle is arranged in the air inlet, and an air outlet is formed in the wall of the cylinder; the steam outlet of the steam boiler is connected with the nozzle, and the exhaust port on the cylinder is communicated with the powder outlet of the pulverizer.
The adoption of the method has the further beneficial effects that: when the high-pressure steam in the steam boiler enters the nozzle and is sprayed out through the nozzle to the blades of the impeller to push the impeller to rotate, the impeller rotates to drive the main shaft to rotate, and the main shaft rotates to drive the rotating shaft in the pulverizer to rotate.
Further, the pulverizer comprises a shell, a fixed millstone, a movable millstone, a rotating shaft and a bin, wherein the fixed millstone is fixedly arranged on one side wall in the shell, and the movable millstone is arranged in the shell and is close to the fixed millstone; one end of the rotating shaft is connected with the movable millstone, and the other end of the rotating shaft penetrates out of the shell and is connected with one end of the main shaft; the shell is equipped with feed inlet b in the feed inlet a department that corresponds to the fixed mill on the lateral wall that sets up the fixed mill, and the discharge gate and the feed inlet b intercommunication of feed bin are equipped with the powder mouth on the shell, and the gas vent on the cylinder communicates with the powder mouth on the shell.
The adoption of the method has the further beneficial effects that: can effectively grind the biomass charcoal into charcoal powder, has simple structure, stable operation and less parts which need maintenance.
Further, the device also comprises a storage bin, wherein a powder outlet on the shell is communicated with the storage bin, a powder outlet of the storage bin is communicated with a smoke channel of the combustion chamber, an exhaust port on the cylinder is communicated with a powder outlet of the storage bin, and a flow valve a is arranged on the powder outlet of the storage bin.
The adoption of the method has the further beneficial effects that: the carbon powder ground by the grinding machine can be collected for subsequent use, and the situation of insufficient real-time powder production is avoided.
Further, the automatic powder feeding device also comprises a reducer pipe, wherein the large diameter end of the reducer pipe is connected with an exhaust port on the air cylinder, the small diameter end of the reducer pipe is connected with a powder outlet of the storage bin, and an included angle between an outlet of the small diameter end of the reducer pipe and the flow direction of powder in the powder outlet of the storage bin is an obtuse angle.
The adoption of the method has the further beneficial effects that: the flow rate of the high pressure steam flowing out of the pneumatic rotary mechanism can be increased so as to better spray the carbon powder into the combustion chamber.
Further, the biomass charcoal gasification furnace further comprises a slag remover and a lifting machine, wherein the slag remover is used for transferring biomass charcoal generated by the gasification furnace into the lifting machine, and a discharge hole of the lifting machine extends to a storage bin.
The adoption of the method has the further beneficial effects that: the biomass charcoal generated by the gasification furnace can be automatically transferred into the pulverizer so as to ensure continuous operation of the whole system.
A biomass gasification and medical waste incineration co-production method comprises the following steps:
s100, adding biomass into a gasification furnace, gasifying to produce charcoal and combustible gas, enabling the combustible gas to flow to an incinerator, and adding medical waste into the incinerator to be incinerated to generate smoke;
s200, conveying biomass carbon generated by gasification of the gasification furnace into a pulverizer, and conveying a high-pressure steam part generated by a steam boiler to a pneumatic rotating mechanism to drive the pneumatic rotating mechanism to operate so as to promote the pulverizer to perform pulverizing treatment;
s300, spraying carbon powder ground by the pulverizer into a combustion chamber by high-pressure steam flowing out of the pneumatic rotating mechanism, enabling flue gas to flow to the combustion chamber for deflagration, generating high-temperature gas, and enabling the high-temperature gas to enter a steam boiler for heat exchange.
The adoption of the method has the further beneficial effects that: the high-temperature combustible gas generated by the gasifier enters the incinerator, so that the medical waste can be burnt in a combustion-supporting manner, and the consumption of combustion-supporting energy sources such as coal and oil is reduced;
the flue gas generated by the incinerator, the carbon powder and the high-pressure steam enter a combustion chamber, and a large amount of heat energy can be generated through secondary proportioning and mixed combustion, so that the heat energy yield is effectively improved, and meanwhile, the temperature of a steam boiler is also effectively increased, and the steam boiler is favorable for subsequent power generation, heating and the like;
the charcoal powder drum/spraying system is omitted by utilizing high-pressure steam to spray the charcoal powder drum/spraying system into the combustion chamber, and in addition, the later maintenance is omitted;
the high-pressure steam and the pneumatic rotating mechanism are utilized to drive the pulverizer to operate, so that a motor can be omitted, the working period of the system can be prolonged, and the maintenance cost can be reduced.
Further, the volume ratio of the flue gas, the high-pressure steam and the carbon powder entering the combustion chamber is (2-6): (2-4): (1-3).
The adoption of the method has the further beneficial effects that: can effectively reduce the content of harmful substances in the high-temperature gas.
Further, the mesh number of the carbon powder is 30-120 mesh.
The adoption of the method has the further beneficial effects that: the powder fog is formed conveniently, and the combustion efficiency is improved.
Drawings
FIG. 1 is a block diagram of a biomass gasification and medical waste incineration co-production system according to the present invention;
fig. 2 is an assembly view of the mill and the pneumatic rotary mechanism according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
in the figure:
1. the gasification furnace comprises a gasification furnace body, 2 parts of an incinerator, 3 parts of a combustion chamber, 4 parts of a pulverizer, 410 parts of a shell, 420 parts of a fixed millstone, 430 parts of a movable millstone, 440 parts of a rotary shaft, 450 parts of a storage bin, 5 parts of a pneumatic rotary mechanism, 510 parts of a cylinder, 520 parts of a main shaft, 530 parts of an impeller, 540 parts of a nozzle, 6 parts of a steam boiler, 7 parts of a storage bin, 8 parts of a reducer pipe, 9 parts of a slag remover, 10 parts of a lifting machine.
Detailed Description
The principles and features of the present invention are described below with examples given for the purpose of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1, the co-production system for biomass gasification and medical waste incineration comprises a gasification furnace 1, an incinerator 2, a combustion chamber 3, a pulverizer 4, a pneumatic rotary mechanism 5 and a steam boiler 6, wherein a flue gas outlet of the gasification furnace 1 is communicated with a combustion chamber of the incinerator 2, namely, combustible gas generated after biomass is gasified in the gasification furnace 1 can enter the combustion chamber of the incinerator 2 through the flue gas outlet, of course, the combustible gas generated by the gasification furnace 1 can also enter the combustion chamber 3, the flue gas outlet of the incinerator 2 is communicated with a flue gas inlet of the combustion chamber 3, namely, flue gas generated after medical waste is combusted in the combustion chamber 3 can enter the combustion chamber 3 through the flue gas outlet; the flue gas outlet of the combustion chamber 3 is communicated with the flue gas inlet of the steam boiler 6, namely, high-temperature gas generated in the combustion chamber 3 can enter the steam boiler 6 through the flue gas outlet for heat exchange so as to generate high-pressure steam; the powder outlet of the pulverizer 4 is communicated with a smoke channel of the combustion chamber 3; the pneumatic rotating mechanism 5 is connected with a rotating shaft 440 of the flour mill 4 to drive the rotating shaft 440 to rotate; the steam outlet of the steam boiler 6 is communicated with the air inlet of the pneumatic rotary mechanism 5, and the air outlet of the pneumatic rotary mechanism 5 is communicated with the powder outlet of the pulverizer 4.
Example 2
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 1, and is specifically as follows:
the powder outlet of the pulverizer 4 is communicated with the flue gas outlet of the gasifier 1, namely, the carbon powder pulverized by the pulverizer 4 can be sprayed into the combustion cavity of the incinerator 2 under the action of the combustible gas generated by the gasifier 1, so that the medical waste can be burned in a combustion-supporting manner, and the consumption of combustion-supporting energy sources such as coal, oil and the like is reduced.
Example 3
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 2, and is specifically as follows:
the pneumatic rotary mechanism 5 comprises an air cylinder 510, a main shaft 520, an impeller 530 and a nozzle 540, wherein the impeller 530 is arranged in an inner cavity of the air cylinder 510, the main shaft 520 is arranged on the impeller 530 in a penetrating way, the impeller 530 and the main shaft 520 are fixed in a key matching way, two ends of the main shaft 520 respectively penetrate out of the air cylinder 510, the main shaft 520 and the air cylinder 510 are matched through bearings, an air inlet is formed in the wall of the air cylinder 510 at a position opposite to the impeller 530, the nozzle 540 is arranged in the air inlet, and an air outlet is formed in the wall of the air cylinder 510; the steam outlet of the steam boiler 6 is connected with the nozzle 540, when the high-pressure steam in the steam boiler 6 enters the nozzle 540 and is sprayed out through the nozzle 540 to the blades of the impeller 530 to push the impeller 530 to rotate, the impeller 530 rotates to drive the main shaft 520 to rotate, the main shaft 520 rotates and simultaneously drives the rotating shaft 440 in the pulverizer 4 to rotate, and the exhaust port on the cylinder 510 is communicated with the powder outlet of the pulverizer 4.
Example 4
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 3, and is specifically as follows:
the pulverizer 4 comprises a shell 410, a fixed millstone 420, a movable millstone 430, a rotary shaft 440 and a bin 450, wherein the fixed millstone 420 is fixedly arranged on one side wall in the shell 410, the movable millstone 430 is arranged in the shell 410 and is close to the fixed millstone 420, and the distance between the movable millstone 430 and the fixed millstone 420 is determined according to the actual pulverizing particle size requirement; one end of the rotating shaft 440 is connected with the movable millstone 430, and the other end of the rotating shaft 440 penetrates out of the housing 410 and is connected with one end of the main shaft 520, and the rotating shaft 440 is matched with the housing 410 through a bearing; the shell 410 is provided with a feed inlet b at a position on the side wall provided with the fixed grinding disc 420 corresponding to the feed inlet a of the fixed grinding disc 420, a discharge outlet of the storage bin 450 is communicated with the feed inlet b, namely biomass charcoal in the storage bin 450 can enter between the movable grinding disc 430 and the fixed grinding disc 420 through the feed inlet b so as to be ground, a powder outlet is formed in the shell 410, and an exhaust outlet in the cylinder 510 is communicated with the powder outlet in the shell 410.
Example 5
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 4, and is specifically as follows:
the biomass gasification and medical waste incineration co-production system further comprises a storage bin 7, a powder outlet on the shell 410 is communicated with the storage bin 7, a powder outlet of the storage bin 7 is communicated with a smoke channel of the combustion chamber 3, a powder outlet of the storage bin 7 is communicated with a smoke outlet of the gasification furnace 1, an exhaust port on the cylinder 510 is communicated with the powder outlet of the storage bin 7, and a flow valve a is arranged on the powder outlet of the storage bin 7.
Example 6
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 5, and is specifically as follows:
the biomass gasification and medical waste incineration co-production system further comprises a reducer pipe 8, wherein the large diameter end of the reducer pipe 8 is connected with an exhaust port on the cylinder 510, the small diameter end of the reducer pipe 8 is connected with a powder outlet of the storage bin 7, and an included angle Q between an outlet of the small diameter end of the reducer pipe 8 and the flow direction of powder in the powder outlet of the storage bin 7 is an obtuse angle, preferably 100-150 degrees, namely, the powder flowing out from the powder outlet of the storage bin 7 is sprayed into the combustion chamber 3 under the action of high-pressure steam flowing out from the reducer pipe 8.
Example 7
As shown in fig. 1 and 2, this embodiment is a further improvement on any one of embodiments 3 to 6, and specifically includes the following:
the biomass gasification and medical waste incineration co-production system further comprises a slag remover 9 and a lifting machine 10, wherein the slag remover 9 is used for transferring biomass charcoal generated by the gasification furnace 1 into the lifting machine 10, a discharge hole of the lifting machine 10 extends to the position of the storage bin 450, namely, the biomass charcoal generated by the gasification furnace 1 can enter the storage bin 450 through the slag remover 9 and the lifting machine 10 for grinding.
Example 8
A biomass gasification and medical waste incineration co-production method comprises the following steps:
s100, adding biomass into a gasification furnace 1 for gasification to produce charcoal and combustible gas, enabling the combustible gas to flow to an incinerator 2, and adding medical waste into the incinerator 2 for incineration to generate smoke;
s200, conveying biomass charcoal generated by gasification of the gasification furnace 1 into the pulverizer 4, and conveying a high-pressure steam part generated by the steam boiler 6 to the pneumatic rotary mechanism 5 to drive the pneumatic rotary mechanism 5 to operate so as to promote the pulverizer 4 to work for pulverizing;
s300, spraying the carbon powder ground by the pulverizer 4 into the combustion chamber 3 by high-pressure steam flowing out of the pneumatic rotary mechanism 5, enabling the flue gas to flow to the combustion chamber 3 for deflagration, generating high-temperature gas, and enabling the high-temperature gas to enter the steam boiler 6 for heat exchange;
the combustible gas generated in the gasification furnace 1 can also enter the combustion chamber 3.
Example 9
As shown in fig. 1 and 2, this embodiment is a further improvement on the basis of embodiment 8, and is specifically as follows:
the volume ratio of the combustible gas, the flue gas, the high-pressure steam and the carbon powder entering the combustion chamber 3 is (3-8): (2-6): (2-4): (1-3), specifically, may be: 3:2:2:1,6:4:3:2,8:6:4:3, etc., of which 6 is preferred: 4:3:2, under the proportion, the content of harmful substances in the smoke can be effectively reduced, so that the load rate of a subsequent purification system is reduced, and the working period is prolonged. The mesh number of the carbon powder is 30-120 meshes, and can be specifically 30-80-120 meshes, and the like.
High-temperature gas smoke technical index
Particles<13mg/m 3 Sulfur dioxide<20mg/m 3
Nitrogen oxides<120mg/m 3 Mercury and compounds<0.02mg/m 3
The blackness of the flue gas is less than or equal to 1.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. The biomass gasification and medical waste incineration co-production system is characterized by comprising a gasification furnace (1), an incinerator (2), a combustion chamber (3), a pulverizer (4), a pneumatic rotating mechanism (5) and a steam boiler (6), wherein a flue gas outlet of the gasification furnace (1) is communicated with a combustion cavity of the incinerator (2), and a flue gas outlet of the incinerator (2) is communicated with a flue gas inlet of the combustion chamber (3); the flue gas outlet of the combustion chamber (3) is communicated with the flue gas inlet of the steam boiler (6); the powder outlet of the pulverizer (4) is communicated with the smoke channel of the combustion chamber (3); the pneumatic rotating mechanism (5) is connected with a rotating shaft (440) of the pulverizer (4) so as to drive the rotating shaft (440) to rotate; the steam outlet of the steam boiler (6) is communicated with the air inlet of the pneumatic rotary mechanism (5), and the air outlet of the pneumatic rotary mechanism (5) is communicated with the powder outlet of the pulverizer (4);
the powder outlet of the pulverizer (4) is communicated with the smoke outlet of the gasifier (1);
the pneumatic rotating mechanism (5) comprises an air cylinder (510), a main shaft (520), an impeller (530) and a nozzle (540), wherein the impeller (530) is arranged in an inner cavity of the air cylinder (510), the main shaft (520) is arranged on the impeller (530) in a penetrating manner, two ends of the main shaft respectively penetrate out of the air cylinder (510), an air inlet is formed in a wall of the air cylinder (510) at a position, which is opposite to the impeller (530), of a blade, the nozzle (540) is arranged in the air inlet, and an air outlet is formed in the wall of the air cylinder (510); the steam outlet of the steam boiler (6) is connected with the nozzle (540), and the exhaust port on the air cylinder (510) is communicated with the powder outlet of the pulverizer (4).
2. The biomass gasification and medical waste incineration co-production system according to claim 1, wherein the pulverizer (4) comprises a housing (410), a stationary grinding disc (420), a movable grinding disc (430), a rotating shaft (440) and a bin (450), wherein the stationary grinding disc (420) is fixedly arranged on one of the side walls in the housing (410), and wherein the movable grinding disc (430) is arranged in the housing (410) and is close to the stationary grinding disc (420); one end of the rotating shaft (440) is connected with the movable millstone (430), and the other end of the rotating shaft penetrates out of the shell (410) and is connected with one end of the main shaft (520); the shell (410) is provided with a feed inlet b corresponding to a feed inlet a of the fixed grinding disc (420) on the side wall of the fixed grinding disc (420), a discharge outlet of the storage bin (450) is communicated with the feed inlet b, a powder outlet is formed in the shell (410), and an exhaust port in the cylinder (510) is communicated with the powder outlet in the shell (410).
3. The biomass gasification and medical waste incineration co-production system according to claim 2, further comprising a storage bin (7), wherein a powder outlet on the shell (410) is communicated with the storage bin (7), the powder outlet of the storage bin (7) is respectively communicated with a flue gas channel of the combustion chamber (3) and a flue gas outlet of the gasification furnace (1), an exhaust port on the cylinder (510) is communicated with the powder outlet of the storage bin (7), and a flow valve a is arranged on the powder outlet of the storage bin (7).
4. A biomass gasification and medical waste incineration co-production system according to claim 3, further comprising a reducer pipe (8), wherein the large diameter end of the reducer pipe (8) is connected with the exhaust port on the cylinder (510), the small diameter end of the reducer pipe (8) is connected with the powder outlet of the storage bin (7), and the included angle between the outlet of the small diameter end of the reducer pipe (8) and the flow direction of the powder in the powder outlet of the storage bin (7) is an obtuse angle.
5. The biomass gasification and medical waste incineration co-production system according to any one of claims 2 to 4, further comprising a slag remover (9) and a lifting machine (10), wherein the slag remover (9) is used for transferring biomass charcoal generated by the gasification furnace (1) into the lifting machine (10), and a discharge hole of the lifting machine (10) extends to the storage bin (450).
6. A co-production method of the biomass gasification and medical waste incineration co-production system according to any one of claims 1 to 4, comprising the steps of:
s100, adding biomass into a gasification furnace (1) for gasification to produce charcoal and combustible gas, enabling the combustible gas to flow to an incinerator (2), and adding medical waste into the incinerator (2) for incineration to generate smoke;
s200, conveying biomass charcoal generated by gasification of the gasification furnace (1) into the pulverizer (4), and conveying a high-pressure steam part generated by the steam boiler (6) to the pneumatic rotary mechanism (5) to drive the pneumatic rotary mechanism (5) to operate so as to promote the pulverizer (4) to work for pulverizing;
s300, spraying carbon powder ground by the grinding machine (4) into the combustion chamber (3) by high-pressure steam flowing out of the pneumatic rotating mechanism (5), enabling smoke to flow into the combustion chamber (3) for deflagration, generating high-temperature gas, and enabling the high-temperature gas to enter the steam boiler (6) for heat exchange.
7. The method according to claim 6, wherein the volume ratio of the flue gas, the high-pressure steam and the carbon powder entering the combustion chamber (3) is (2-6): (2-4): (1-3).
8. The method of claim 6, wherein the carbon powder has a mesh size of 30 mesh to 120 mesh.
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