Biomass cracking carbide furnace
Technical field
The present invention relates to biomass carbonization technical field, more particularly to a kind of biomass cracking with a variety of positioning functions
Carbide furnace.
Background technology
Biomass-pyrolysis is one of the cutting edge technology of biomass energy research in the world.The technology can be with continuous work
Skill and the mode of production of batch production convert the biomass based on sawdust the like waste to high-quality easy storage, easily transport,
Energy density height and alternative liquid fuel (bio oil) easy to use, are not only used directly for existing boiler and combustion gas are saturating
The burning of equality equipment, and the quality of liquid fuel can be kept conventional close to bavin Water Oil Or Gas etc. by being further improved processing
The quality of power fuel additionally can therefrom extract commercially valuable chemical products.Compared to conventional fossil fuel,
Bio oil can be considered the green fuel of 21 century because the harmful components such as sulphur, nitrogen contained by it are extremely small.
Cracking reaction is the endothermic process for interrupting the molecular link of biomass organic macromolecule, therefore usually production coke needs
The heating to be continued, this just brings very high energy consumption, economic value not high.
Invention content
The main purpose of the present invention is to provide a kind of biomass cracking carbide furnaces of economic value.
The present invention is achieved through the following technical solutions above-mentioned purpose:A kind of biomass cracking carbide furnace, including horizontal stove
Body, the ignition mechanism below furnace body, set on the inner cavity of the furnace body feed cylinder, connect feed cylinder import feed hopper,
The discharge nozzle and the chimney above furnace body, the furnace body of connection feed cylinder outlet are equipped in the position of face ignition mechanism
For the gap that air enters, a screw feeding axis is equipped in the feed cylinder, the top of the feed cylinder is equipped with several connections
The port of the inner cavity of furnace body.
Specifically, the furnace body is divided into hothouse, preliminary thermal cracking room, complete thermal cracking room and transition cooling chamber,
The hothouse is equipped with the first chimney, and the complete thermal cracking room is equipped with the second chimney, and it is cold that the ignition mechanism is set to transition
But the lower section of room.
Further, the root of first chimney is equipped with first switch device, and the root of second chimney is equipped with the
Two switching devices.
Further, the outlet height of the furnace body is less than entrance height.
Further, the inclination angle of the furnace body is 1 °.
Further, the lower part of the discharge nozzle connects an elevator, and the elevator is low close to one end of discharge nozzle
In one end far from discharge nozzle.
Specifically, the screw feeding axis includes axis body and the flight around the axis body.
Further, the outer diameter of the axis body is smaller 130-150mm than the internal diameter of feed cylinder.
Further, the outer diameter of the axis body is 50-70mm.
Specifically, the inlet side of the port toward feeding cylinder tilts.
Using above-mentioned technical proposal, the advantageous effect of technical solution of the present invention is:
The present invention can need not be heated into local continuous production coke after cracking is stablized, and have economic well imitate
Benefit.
Description of the drawings
Fig. 1 is the stereogram of embodiment biomass cracking carbide furnace;
Fig. 2 is the main full sectional view of embodiment biomass cracking carbide furnace;
Fig. 3 is the vertical view of embodiment biomass cracking carbide furnace;
Fig. 4 is the A-A sectional views in Fig. 3;
Fig. 5 is the B-B sectional views in Fig. 3.
Digital representation in figure:
1- furnace bodies,
11- hothouses,
The preliminary thermal cracking rooms 12-,
The complete thermal cracking rooms 13-,
14- transition cooling chambers;
2- ignition mechanisms;
3- feed cylinders,
31- screw feeding axis,
311- axis bodies,
312- flights
32- ports;
4- feed hoppers,
5- discharge nozzles,
The first chimneys of 6-,
61- first switch devices;
The second chimneys of 7-
71- second switch devices;
8- elevators.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail.
Embodiment:
As shown in Figure 1 to Figure 3, the present invention be a kind of biomass cracking carbide furnace, including horizontal furnace body 1, be set to furnace body 1
The ignition mechanism 2 of lower section, the feed cylinder 3 set on the inner cavity of furnace body 1, the feed hopper 4 of connection 3 import of feed cylinder, connection feed cylinder 3
The discharge nozzle 5 of outlet and the chimney (the first chimney 6 and the second chimney 7) above furnace body 1, furnace body 1 is in face dynamo exploder
The position of structure 2 is equipped with the gap entered for air, is equipped with a screw feeding axis 31 in feed cylinder 3, the top of feed cylinder 3 is equipped with
The port 32 of the inner cavity of several connection furnace bodies 1.It is inside and outside two layers that feed cylinder 3, which divides furnace body 1, the biomass cracking that internal layer occurs
The endothermic reaction that biomass material is cracked to form to coke and inflammable substance under anaerobic environment, outer layer happens is that
The exothermic reaction of inflammable substance burning.In real work, the heat that outer reaction is released can be than the heat of internal layer reactive absorption
It is more, so maintaining the progress of two reactions that can not lean in addition input heat.Specific work process is:Biomass material from into
Hopper 4 is sent into feed cylinder 3, is conveyed forward under the thrust of swivel feeding axis 31;Reaction at the beginning ignition mechanism 2 to furnace body 1 into
Row heat supply causes cracking and starts, and fuel gas constantly will be discharged into furnace body by the solid matter in feed cylinder 3 from port 32
In 1, fuel gas is mixed with the air come in from gap and is then lighted, and after waiting flameholdings, ignition mechanism 2 can not have to consumption
Fuel, the burning of fuel gas can maintain the energy consumption of high temperature and offer cracking in furnace body 1 automatically.Therefore the present invention can be
Cracking need not be heated into local continuous production coke after stablizing, and have good economic benefit.
As shown in Figure 1 to Figure 3, furnace body 1 is divided into hothouse 11, preliminary thermal cracking room 12, complete 13 and of thermal cracking room
Transition cooling chamber 14, hothouse 11 are equipped with the first chimney 6, and complete thermal cracking room 13 is equipped with the second chimney 7, ignition mechanism 2
Set on the lower section of transition cooling chamber 14.Ignition mechanism 2 heats up to transition cooling chamber 14, is closed after initiation reaction, mistake after stablizing
Cooling chamber 14 is crossed to burn general, temperature is relatively low by gap air inlet;There are chimney in hothouse 11 and complete thermal cracking room 13
As gas vent, burning is more abundant, and temperature is higher;Preliminary thermal cracking room 12 can only introduce air, burning from chamber is closed on
It is less.It is to realize that the reasonable distribution of 1 temperature range of furnace body, the heating of hothouse 11 can save the dry of biomass material in this way
Dry requirement;From preliminary thermal cracking room 12 to 14 temperature from low to high of transition cooling chamber, fully reaction was not only met and had required, but also coke can be made
Charcoal comes out temperature reduction, and discharging is avoided to burn.
As shown in Figures 2 and 3, the root of the first chimney 6 is equipped with first switch device 61, and the root of the second chimney 7 is equipped with
Second switch device 71.The burning in furnace body 1 of the imflammable gas of cracking out, which can discharge heat, causes 1 temperature of furnace body to increase,
If burning velocity is uncontrolled to may result in the fusing of furnace body 1, cause the accident.First switch device 61 and second switch device 71
The flow that air in furnace body 1 can be controlled keeps combustion reaction abundant, reduces dense smoke or toxic gas generates.
As shown in Fig. 2, the outlet height of furnace body 1 is less than entrance height, the inclination angle of furnace body 1 is 1 °.Inclination angle is arranged in furnace body 1
It can be conducive to solid biomass material to spread toward front toward rear portion conveying and hot gas.Inclination angle is less just avoided that equipment is turned over
.
As shown in Fig. 1, Fig. 3 and Fig. 5, the lower part of discharge nozzle 5 connects an elevator 8, and elevator 8 is close to discharge nozzle 5
One end is less than one end far from discharge nozzle 5.The height-limited outlet height in feed cylinder 3 of discharge nozzle 5, before furnace body 1 after height
5 position of discharge nozzle can be lower in the case of low, then the discharge space of coke only understands smaller.Coke can be promoted and be arrived by elevator 8
Eminence, it might even be possible to be sent directly into haulage vehicle.
As shown in figure 5, screw feeding axis 31 includes axis body 311 and the flight 312 around axis body 311.Because of burning master
It is happened at port 32, flame is upward, so the temperature on 1 same position top of furnace body is often apparently higher than lower part.Spiral
On the one hand 312 mode of movement of piece plays progradation to material, on the other hand can stir material, realizes uniform heated.
The outer diameter of axis body 311 is smaller 130-150mm than the internal diameter of feed cylinder 3.Fuel gas in 3 outer combustion heat release of feed cylinder,
Heat will be conducted by the barrel of feed cylinder 3 toward internally positioned material, thickness between empirical discovery axis body 311 and feed cylinder 3
70 ± 5mm or so heat transfers can be more abundant, can guarantee reaction ratio so more thoroughly.
The outer diameter of axis body 311 is 50-70mm.In the case where 311 outer wall of axis body and feed cylinder 3 inner wall distance determine, axis
311 outer diameter of body is bigger, and conveying section is bigger, and theoretic production efficiency is higher;But if material send too fast, exothermic heat of reaction
More acutely it will increase control difficulty, empirical discovery axis body 311 takes outer diameter 50-70mm relatively more reasonable.
As shown in Fig. 2, the inlet side of port 32 toward feeding cylinder 3 tilts.Biomass material is often that stalk etc. is elongated
The plant material of item, port 32 are then the conveying direction along material toward outlet-inclined impeller vane, and raw material more easily propagates through port 32
It falls in furnace body 1, material is just burned without thermal cracking at this time, can bring prodigious waste.Port is set toward import
Side tilts and is just avoided that this problem.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.