CN211551604U

CN211551604U - Domestic waste pyrolysis gasification burns burning furnace

Info

Publication number: CN211551604U
Application number: CN201921702439.3U
Authority: CN
Inventors: 张钜祥
Original assignee: Guangzhou Zhongke Hui Environmental Technology Co ltd
Current assignee: Guangzhou Zhongke Hui Environmental Technology Co ltd
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-09-22
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a domestic waste pyrolysis gasification burns burning furnace. This gasification incinerator, including the incinerator box, the incinerator box includes combustion chamber and buffer chamber, be provided with in the combustion chamber and burn furnace end and inlet pipe, the combustion chamber lower part still is provided with combustion-supporting gas intake pipe and air intake pipe, the inlet pipe runs through from the combustion chamber and stretches into in the buffer chamber, the combustion chamber top is provided with tail gas discharge device, it is provided with the gasification gas input port to burn furnace end bottom, it is provided with out the charcoal mouth to burn incinerator bottom of the box portion, it is provided with the sealed basin that is used for avoiding burning the combustible gas effusion in the incinerator box to go out charcoal mouth. The whole set of equipment of the household garbage pyrolysis gasification incinerator has good sealing performance, and the leakage risk of combustible gas can be effectively avoided; the three main components of the feeding pipeline, the buffer chamber and the incinerator are relatively isolated and well integrated, and the whole equipment of the household garbage pyrolysis gasification incinerator is compact in structure, safe and reliable and low in manufacturing and operating cost.

Description

Domestic waste pyrolysis gasification burns burning furnace

The technical field is as follows:

the utility model relates to a combustible organic waste handles and utilizes technical field, concretely relates to domestic waste pyrolysis gasification burns burning furnace.

Background art:

according to statistics, about 4 hundred million tons of domestic garbage are generated in cities and countryside of China every year, and the garbage is not only an environmental problem but also a multi-element social problem in treatment and utilization. With the advancement of garbage source classification work and the development of mechanical classification technology, garbage reduction and recycling are gradually realized. The treatment of the organic combustible garbage is the main content of the resource utilization of the household garbage. In a general grate furnace, mixed combustible waste is directly burned to generate high-temperature flue gas, and the heat energy of the high-temperature flue gas is utilized. Although the mixed combustion process is simple and easy to operate, the mixed combustible garbage components are complex and contain components such as plastics, films, cloth, paper, leather, wood blocks and the like, so that various materials have different burning points and higher moisture content, the problem of insufficient combustion, the problem of generation of heavy secondary pollutants such as dioxin and the like easily occurs.

The pyrolysis gasification incineration is characterized by that the combustible material is made into fuel block or fuel rod, and then is baked at high temp. or oxygen-deficient combustion is implemented so as to make the combustible organic material undergo the processes of dry distillation, pyrolysis and gasification to produce various compounds, finally produce CO and H₂And the combustible gas is combusted in a single phase, so that the heat energy of the next step is utilized. The combustion of the combustible gas is homogeneous combustion, which is beneficial to the control of the combustion process and realizes clean combustion, and in addition, in the pyrolysis process of the garbage, the garbage is in an oxygen-free dechlorination reducing atmosphere state, no dioxin precursor is generated, and the generation of dioxin is fundamentally inhibited.

Due to the clean and controllable combustion, the technology of pyrolysis gasification incinerator is gradually applied and popularized, but the traditional pyrolysis incinerator has several problems: firstly, the sealing performance of a feeding mechanism is poor, and potential safety hazards of combustible gas leakage exist; secondly, the tar yield is high, and the hearth is easy to be bonded; thirdly, the continuous carbon preparation effect of the organic combustible is poor; fourthly, the incinerator body has a complex structure and is inconvenient to maintain.

Therefore, a new pyrolysis gasification incinerator is required.

The utility model has the following contents:

an object of the utility model is to provide a safe, high-efficient, novel domestic waste pyrolysis gasification burns burning furnace, the utility model discloses charge-in pipeline, surge chamber, burn the not only relative isolation of three essential element of burning furnace, better integrated an organic whole again burns a whole set of device compact structure, safe and reliable makes lower with the working costs.

The utility model aims at providing a domestic waste pyrolysis gasification burns burning furnace, including burning furnace box, burning furnace box include combustion chamber and buffer chamber, the combustion chamber in be provided with burning furnace end and inlet pipe, the combustion chamber lower part still be provided with the combustion-supporting gas intake pipe of carrying the natural gas and the air intake pipe of air delivery, the inlet pipe run through from the combustion chamber and stretch into in the buffer chamber, the combustion chamber top be provided with tail gas discharging equipment, burning furnace end bottom be provided with the gasification gas input port, burning furnace bottom of the case portion be provided with out the charcoal mouth, play charcoal mouth lower part be provided with and be used for avoiding burning the sealed basin that the combustible gas in the burning furnace box escaped.

The design of the feeding pipe can ensure the continuous feeding operation, control the speed of gasifying gas and preparing the biochar and reduce the tar yield; the buffer chamber can play a role in fully carbonizing the fuel and also can play a role in serving as an air storage tank; the carbon outlet directly enters the sealed water tank, which is beneficial to the quick cooling of the carbon.

Preferably, the inlet pipe include set up in the outside outer inlet pipe of incinerator box and set up the interior inlet pipe in combustion chamber and cushion chamber, the internal diameter of outer inlet pipe be less than the internal diameter of interior inlet pipe.

Further preferably, a cooling water jacket is arranged outside the outer feeding pipe. The cooling water in the cooling water jacket circularly flows to cool the feeding pipe, so that the rod-shaped fuel which does not enter the incinerator is prevented from overheating and being pyrolyzed and gasified too early.

Further preferably, the bottom of the outer feeding pipe and the bottom of the inner feeding pipe are level. Interior inlet pipe sets up inside the incinerator, and the internal diameter of this section pipeline is slightly bigger than outer inlet pipe, and the bottom is held level, and the top is higher (the top of interior inlet pipe is higher than the top of outer inlet pipe) to satisfy the space needs that the clavate fuel volume that expands that is heated, the inside and outside pipeline bottom of incinerator keeps the same height of level, and the clavate fuel can smoothly impel in the inlet pipe. The longer feeding pipe is designed to be beneficial to controlling the combustible gas in the incinerator body to escape, and the diameter of the rod-shaped fuel is equivalent to the inner diameter of the outer feeding pipe, so that the sealing performance of the outer feeding pipe can be enhanced, and the combustible gas in the incinerator can be further controlled to escape.

Preferably, the tail gas discharging device comprises a tail gas discharging pipe arranged at the top of the combustion chamber, and the tail gas discharging pipe is sequentially connected with a condensation water washing purifier and an induced draft fan.

Preferably, rod-shaped fuel made of domestic garbage is arranged in the feeding pipe. The rod-shaped fuel is fed into the feeding pipe by a feeding hydraulic push rod, the feeding speed is controlled by a computer, and the feeding speed of the rod-shaped fuel can be adjusted at any time according to the condition of combustible gas in the incinerator. The length of the rod-shaped fuel is generally 500-600 mm, and the length of the feeding pipe can accommodate 8-10 rod-shaped fuels.

Preferably, the buffer chamber is provided with a pressure detection meter. The pressure detection meter is used for observing the gas production state in the pyrolysis gasification incinerator and the pressure in the incinerator.

Preferably, a discharge hole is formed in one side of the sealed water tank and connected with the screw discharging machine.

The utility model discloses a working process is: rod-shaped fuel is fed into the feeding pipe and pushed by a feeding hydraulic push rod, the natural gas conveyed by a combustion-supporting gas inlet pipe and the air conveyed by an air inlet pipe of the incinerator head are mixed and ignited, and the combustion is maintained for a period of time, and the rod-shaped fuelWhen being conveyed to an inner feeding pipe above the incinerator head, the biomass is pyrolyzed, carbonized and gasified at a proper temperature under an anoxic state to form biochar and produce CO and H₂After the gas is generated stably, the natural gas supplied from the outside is closed, the gasified gas input from a gasified gas input port at the bottom of the incinerator burner is kept to be continuously combusted, the bar-shaped fuel is pushed by a feeding hydraulic push rod to fall into a buffer chamber, the carbonization and the gas generation are continued under the lateral thermal radiation of the incinerator burner, the generated biochar falls into a sealed water tank through a carbon outlet, the carbon outlet completely enters the position below the water surface of the sealed water tank, the combustible gas in the incinerator is prevented from escaping, the biochar falling into the sealed water tank is pushed and discharged in batches by a screw discharging machine after accumulating a certain amount, the biochar is subsequently utilized, the pyrolyzed and gasified combustible gas enters the incinerator burner through the gasified gas input port under the action of an induced draft fan, the incinerated smoke rises into a tail gas exhaust pipe, and is discharged to reach the standard after being treated by a.

The utility model has the advantages that:

(1) the utility model provides a domestic waste pyrolysis gasification incinerator, the inlet pipe directly enters the incineration hearth, and the inlet pipe is hermetically connected with the hearth; the inner diameter of the feeding pipe is consistent with the outer diameter of the cylindrical fuel, the feeding pipe is long in length and can store a plurality of fuel rods to form a good sealing effect, and the hydraulic push rod is used for continuously feeding; a feeding pipe is connected to the outside of the incineration hearth, and a cooling water jacket is additionally arranged outside the incineration hearth, so that the columnar fuel rods which do not enter the hearth are prevented from being heated excessively and generating combustible gas through pyrolysis;

(2) the lateral surface of the incinerator box body is provided with a carbonization buffer chamber with larger capacity, a certain amount of carbon can be accumulated, the heating time of the carbon is prolonged, the carbon is fully carbonized, and meanwhile, the buffer chamber is also used as a storage chamber of combustible gas, so that the gas quantity is convenient to adjust; the carbonization buffer chamber is provided with a pressure gauge, so that the pressure condition in the furnace can be observed, the combustion state is controlled, and the safety of the furnace body is improved; a charcoal outlet is arranged below the carbonization buffer chamber and enters the water tank, and the leakage of combustible gas is prevented by using water;

(3) the rear end of the tail gas exhaust pipe is provided with an induced draft fan, combustible gas in the incinerator is guided out of the incinerator, the combustion chamber is in a micro negative pressure state, and the combusted tail gas is purified and discharged; the feeding speed, the discharging speed and the air inflow of the incinerator are controlled by a computer program, so that the gas generating speed, the combustion speed, the carbonization speed and the exhaust speed are well matched, and the incinerator can continuously and stably operate;

(4) the whole set of equipment of the household garbage pyrolysis gasification incinerator has good sealing performance, and the leakage risk of combustible gas can be effectively avoided; the three main components of the feeding pipeline, the buffer chamber and the incinerator are relatively isolated and well integrated, and the whole equipment of the household garbage pyrolysis gasification incinerator is compact in structure, safe and reliable and low in manufacturing and operating cost.

Description of the drawings:

FIG. 1 is a schematic structural view of a household garbage pyrolysis gasification incinerator of the present invention;

description of reference numerals: 1. a feed pipe; 2. a rod-shaped fuel; 3. a feed hydraulic push rod; 4. burning the furnace end; 5. a combustion-supporting gas inlet pipe; 6. an air inlet pipe; 7. a gasification gas input port; 8. a combustion chamber; 9. a buffer chamber; 10. a tail gas exhaust pipe; 11. a condensed water washing purifier; 12. an induced draft fan; 13. a charcoal outlet; 14. sealing the water tank; 15. a screw discharging machine; 16. a cooling water jacket; 17. a pressure monitoring meter; 18. an incinerator box body.

The specific implementation mode is as follows:

the following examples are further illustrative of the present invention and are not intended to be limiting thereof.

Example 1:

as shown in fig. 1, a domestic waste pyrolysis gasification burns burning furnace, including burning furnace box 18, it includes combustion chamber 8 and surge chamber 9 to burn burning furnace end 4 and inlet pipe 1 to burn burning furnace end 18 in the combustion chamber 8, combustion chamber 8 lower part still is provided with combustion-supporting gas intake pipe 5 and the air intake pipe 6 of air of carrying the natural gas, inlet pipe 1 runs through from combustion chamber 8 and stretches into in the surge chamber 9, combustion chamber 8 top is provided with tail gas discharging device, tail gas discharging device is including setting up in the tail gas discharge pipe 10 at combustion chamber 8 top, tail gas discharge pipe 10 has connected gradually condensate water washing clarifier 11 and draught fan 12, burning furnace end 4 bottom is provided with gasification gas input port 7, it is provided with charcoal outlet 13 to burn burning furnace box 18 bottom, charcoal outlet 13 lower part is provided with the sealed basin 14 that is used for avoiding the combustible gas in the.

The feed pipe 1 includes an outer feed pipe provided outside the incineration furnace tank 18 and an inner feed pipe provided in the combustion chamber 8 and the surge chamber 9, and the inner diameter of the outer feed pipe is smaller than that of the inner feed pipe. The bottom of the outer feeding pipe and the bottom of the inner feeding pipe are level. Interior inlet pipe sets up inside the incinerator, and the internal diameter of this section pipeline is slightly bigger than outer inlet pipe, and the bottom is held level, and the top is higher (the top of interior inlet pipe is higher than the top of outer inlet pipe) to satisfy the space needs that the clavate fuel volume that expands that is heated, the inside and outside pipeline bottom of incinerator keeps the same height of level, and the clavate fuel can smoothly impel in the inlet pipe.

The outer part of the feeding pipe is provided with a cooling water jacket 16, the cooling water jacket 16 is connected with a water inlet pipe and a water outlet pipe (not shown in the figure), and cooling water in the cooling water jacket 16 circularly flows to cool the feeding pipe 1, so that rod-shaped fuel which does not enter the incinerator is prevented from overheating and being pyrolyzed and gasified early.

The rod-shaped fuel made of domestic garbage is arranged in the feeding pipe 1, the rod-shaped dye is cylindrical, the rod-shaped fuel 2 is pushed to be fed by the feeding hydraulic push rod 3 in the feeding pipe 1, the length of the rod-shaped fuel 2 is generally 500-600 mm, the length of the feeding pipe 1 can generally contain 8-10 rod-shaped fuels, a longer feeding pipe is designed, the escape of combustible gas in the incinerator can be controlled, the diameter of the rod-shaped fuel is equivalent to the inner diameter of the outer feeding pipe, the sealing performance of the outer feeding pipe can be enhanced, and the escape of the combustible gas in the incinerator can be further controlled.

The buffer chamber 9 is provided with a pressure detection meter 17 for observing the gas production state in the pyrolysis gasification incinerator and the pressure in the incinerator, a discharge port is arranged on one side of the sealed water tank 14, the discharge port is connected with the screw discharging machine 15, the biochar falling into the sealed water tank 14 is pushed by the screw discharging machine 15 in batches after accumulating a certain amount, and subsequent utilization is carried out.

The utility model discloses a working process is: rod-shaped fuel 2 is pushed in the feed pipe 1 by a feed hydraulic push rod 3Feeding, the natural gas conveyed by a combustion-supporting gas inlet pipe 5 and the air conveyed by an air inlet pipe 6 into the incinerator head 4 are mixed and ignited, and the combustion is maintained for a period of time, when the rod-shaped fuel 2 is conveyed to a pipeline above the incinerator head 4, the rod-shaped fuel is pyrolyzed, carbonized and gasified at a proper temperature under an anoxic state to form biochar and produce CO and H₂After the gas of the combustible gas is stable, the natural gas supplied from the outside is closed, and the gasified gas input from the gasified gas input port 7 at the bottom of the incinerator head 4 keeps the incinerator head 4 burning continuously. The rod-shaped fuel 2 falls into the buffer chamber 9 under the pushing of continuous feeding, carbonization and gas generation are continued under the lateral heat radiation of the incinerator head 4, the generated biochar falls into the sealed water tank 14 through the carbon outlet 13, the carbon outlet 13 completely enters the water surface of the sealed water tank 14, the combustible gas in the incinerator is prevented from escaping, the biochar falls into the sealed water tank 14, and after a certain amount of biochar is accumulated, the biochar is pushed by the screw discharging machine 15 in batches to be discharged for subsequent utilization.

The combustion chamber 8 and the buffer chamber 9 are respectively separated, the buffer chamber 9 is provided with a pressure monitoring meter 17 for observing the gas production state in the pyrolysis furnace and the pressure in the furnace, under the action of the induced draft fan 12, the combustible gas of pyrolysis gasification enters the burning furnace end 4 from the gasification gas input port 7, the burning flue gas rises to enter the tail gas exhaust pipe 10, and the burning flue gas is treated by the condensation water washing purifier 11 and then is discharged up to the standard. The whole set of equipment is hermetically arranged in the incinerator box body 18, the feeding speed, the combustible gas and air intake speed and the like are controlled by a computer, and the stable and continuous combustion of the incinerator is kept.

Compared with the traditional design mode, the utility model, have following several advantages: 1. the whole set of equipment has good sealing performance, and the leakage risk of combustible gas can be effectively avoided; 2. the feeding pipe can ensure continuous feeding operation, control the speed of gasifying gas and preparing the biochar and reduce the generation amount of tar; 3. the buffer chamber can play a role in fully carbonizing the fuel and also can play a role in serving as an air storage tank; 4. the carbon outlet directly enters the sealed water tank, which is beneficial to the quick cooling of the carbon; 5. the three main parts of the feeding pipeline, the buffer chamber and the incinerator are relatively isolated and are well integrated; 6. the whole set of equipment has compact structure, safety and reliability and lower manufacturing and operating cost.

The above is to the present invention provides a domestic waste pyrolysis gasification incinerator, the above description of the embodiment is only used to help understanding the technical solution and the core idea of the present invention, it should be pointed out, for the technical personnel in the technical field, without departing from the present invention, the present invention can also be right to perform several improvements and modifications, and these improvements and modifications also fall into the protection scope of the present invention.

Claims

1. The utility model provides a domestic waste pyrolysis gasification burns burning furnace, a serial communication port, including burning furnace box, burning furnace box include combustion chamber and buffer chamber, the combustion chamber in be provided with burning furnace end and inlet pipe, the combustion chamber lower part still be provided with the combustion-supporting gas intake pipe of carrying natural gas and the air intake pipe of air delivery, the inlet pipe run through from the combustion chamber and stretch into in the buffer chamber, the combustion chamber top be provided with tail gas discharging equipment, burning furnace end bottom be provided with the gasification gas input port, burning furnace bottom of the case portion be provided with out the charcoal mouth, play charcoal mouth lower part be provided with and be used for avoiding burning the sealed basin that the combustible gas in the burning furnace box escaped.

2. The incinerator according to claim 1, wherein said feed pipe comprises an outer feed pipe disposed outside the incinerator body and an inner feed pipe disposed in the combustion chamber and the buffer chamber, said outer feed pipe having an inner diameter smaller than that of said inner feed pipe.

3. The incinerator according to claim 2, wherein a cooling jacket is provided on the outside of the outer feeding pipe.

4. The incinerator according to claim 2, wherein the bottom of the outer feeding pipe and the bottom of the inner feeding pipe are substantially equal.

5. The incinerator according to claim 1, wherein said exhaust gas discharge means comprises an exhaust gas discharge pipe disposed at the top of the combustion chamber, and said exhaust gas discharge pipe is connected with a condensate water washing purifier and an induced draft fan in sequence.

6. The incinerator according to claim 1, wherein rod-shaped fuel made of the garbage is installed in the feeding pipe.

7. The incinerator according to claim 1, wherein said buffer chamber is provided with a pressure gauge.

8. The incinerator according to claim 1, wherein a discharge port is provided at one side of the sealed water tank, and the discharge port is connected to a screw discharger.