Utility model content
The problem existed for above prior art, the utility model proposes pyrolysis of coal device with recirculating fluidized bed combination is
System, it is possible to effectively reduce the complexity of pyrolytic process of coal, reduce follow-up tar dustiness, meanwhile, Appropriate application thermal decomposition product, fall
Low cost of electricity-generating.
The utility model proposes pyrolysis of coal device and recirculating fluidized bed combined system, including: fast pyrolysis reactor, circulation
Fluid bed and pyrolysis oil gas processing system,
Described fast pyrolysis reactor has reactor body, and described reactor body limits reaction compartment, described instead
Space is answered to be divided into feed zone, pyrolysis zone and discharge zone from top to bottom;
Described pyrolysis zone is provided with multilamellar heat accumulation type radiant tube, described multilamellar heat accumulation type radiant tube in described pyrolysis zone along institute
State reactor body short transverse spaced apart, and every layer of described heat accumulation type radiant tube includes multiple horizontally spaced point
The heat accumulation type radiant tube of cloth;
Described discharge zone is provided with semicoke outlet and umbrella of bleeding;The outlet of described semicoke is positioned at the bottom of described reactor body,
Semicoke after pyrolysis is discharged described reactor body;The pyrolysis gas produced in pyrolytic process discharged by described umbrella of bleeding, described in take out
Ballute includes umbrella portion and shank, described umbrella portion and described both shanks gas communication, and described shank is from the outside of described reactor
Through the sidewall of described reactor and extend to the centre position of described inside reactor;
Described recirculating fluidized bed is communicated with described fast pyrolysis reactor by the outlet of described semicoke;
Described pyrolysis oil gas processing system pass through described in umbrella handle portion of bleeding communicate with described fast pyrolysis reactor.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described pyrolysis oil gas processing system enters
One step includes oil and gas separating system, pyrolysis gas cleaning system and tar refining system, wherein, described in bleed umbrella and described oil gas
Piece-rate system is connected, and the gas outlet of described oil and gas separating system is connected with described pyrolysis gas cleaning system, and described oil gas divides
Liquid outlet from system is connected with described tar refining system.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described recirculating fluidized bed wraps further
Include air intake.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, every layer of described heat accumulation type radiant tube bag
Include multiple parallel and equally distributed heat accumulation type radiant tube, and each described heat accumulation type radiant tube and adjacent upper and lower two-layer accumulation of heat
Each heat accumulation type radiant tube in formula radial canal is parallel and staggers along the body height direction of described pyrolysis of coal reactor
Distribution.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described in umbrella of bleeding be pyramidal structure, institute
Bottom and the surface, umbrella portion of stating umbrella portion orientating reaction device are disposed with multiple through hole.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described in radius at the bottom of umbrella umbrella of bleeding be institute
Stating the 1/8~1/4 of reactor body width, inclination angle is 45 °~60 °.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described in the bleed top, umbrella portion of umbrella set
It is equipped with bleeding point.
Pyrolysis of coal device as above and recirculating fluidized bed combined system, wherein, described in bleed umbrella shank inside be
Hollow structure, for discharging the pyrolysis gas within described reactor body.
By using fast pyrolysis reactor described in the utility model, heat accumulation type radiant tube formula down-flow fluidized bed using ECT is used to process powder
Coal, it is possible to the effective pyrolysis particle diameter fine coal less than 6~8mm.
Being bled umbrella structure by employing, the oil gas that pyrolysis produces is derived rapidly reactor body, secondary response is few, pyrolysis
Oil gas is declined by dustiness after the pyrolysis char in discharge zone, effectively reduces the dustiness in pyrolysis oil gas, reduces Jiao
The pretreatment cost of the follow-up refinement treatment of oil, reduces heavy components content in tar, effective raising tar and pyrolysis oil simultaneously
The quality of gas.
Export by arranging semicoke, by pyrolysis char hot-loading and hot-conveying to recirculating fluidized bed, improve the energy profit of electricity generation system
By rate.
Accompanying drawing explanation
By the detailed description made in conjunction with the following drawings, of the present utility model above-mentioned or otherwise content will become
Become apparent from and be easier to understand, wherein:
Fig. 1 is the structural representation of this utility model pyrolysis of coal device and recirculating fluidized bed combined system;
Fig. 2 is the process chart of this utility model pyrolysis of coal device and recirculating fluidized bed combined system;
Fig. 3 is the structural representation of fast pyrolysis reactor in this utility model;
Fig. 4 is the umbrella front view of bleeding of fast pyrolysis reactor in this utility model;
Fig. 5 is umbrella umbrella portion of the bleeding top view of fast pyrolysis reactor in this utility model.
In accompanying drawing, each label is expressed as follows:
100: fast pyrolysis reactor;
1: reactor body, 11: feed zone, 12: pyrolysis zone, 13: discharge zone;
2: heat accumulation type radiant tube;
3: umbrella of bleeding, 31: umbrella portion, 32: shank, 33: bleeding point, 34: at the bottom of umbrella;
4: semicoke;
5: material inlet;
6: semicoke exports;
200: recirculating fluidized bed;
300: pyrolysis oil gas processing system;
301: oil and gas separating system, 302: pyrolysis gas cleaning system, 303: tar refining system.
Detailed description of the invention
Describe detailed description of the invention of the present utility model below in conjunction with the accompanying drawings in detail.
Detailed description of the invention/the embodiment recorded at this is specific detailed description of the invention of the present utility model, is used for
Bright design of the present utility model, is all explanatory and exemplary, should not be construed as this utility model embodiment and this reality
Restriction by novel scope.In addition to the embodiment recorded at this, those skilled in the art can also be based on the application claim
Book and description disclosure of that use other technical scheme obvious, and these technical schemes include using to be remembered at this
The technical scheme making any obvious substitutions and modifications of embodiment carried, all protection domain of the present utility model it
In.
Fig. 1 is the structural representation of this utility model pyrolysis of coal device and recirculating fluidized bed combined system.As it is shown in figure 1,
The pyrolysis of coal device that this utility model is proposed and recirculating fluidized bed combined system include fast pyrolysis reactor 100, recycle stream
Change bed 200 and pyrolysis oil gas processing system 300.
Fig. 3 is the structural representation of fast pyrolysis reactor 100 in this utility model.As it is shown on figure 3, this utility model carries
The fast pyrolysis reactor 100 gone out includes reactor body 1.
Described reactor body 1 limits reaction compartment, and described reaction compartment can be divided into feed zone 11, pyrolysis from top to down
District 12 and discharge zone 13.
Described feed zone 11 includes material inlet 5.Described material inlet 5 is positioned at the top of described reactor body 1.
Concrete, described material inlet 5 can be arranged in the center on described reactor body 1 top as far as possible, it is simple to
Enter into the material in reactor from described material mouth 5 and can be evenly scattered in inside, described pyrolysis zone 12.
Further, the material particular diameter entered in described pyrolysis zone 12 should be less than 6~8mm.
Described pyrolysis zone 12 includes multilamellar heat accumulation type radiant tube 2.Described multilamellar heat accumulation type radiant tube 2 is in described pyrolysis zone 12
Middle spaced apart along described reactor body 1 short transverse, and every layer of described heat accumulation type radiant tube 2 include multiple along level side
To heat accumulation type radiant tube 2 spaced apart.
Further, every layer of described heat accumulation type radiant tube 2 includes multiple parallel and equally distributed heat accumulation type radiant tube
2, and every layer of heat accumulation type radiant tube 2 is parallel with upper and lower two-layer heat accumulation type radiant tube 2, and hand over along reactor body 1 short transverse
Wrong distribution.
Concrete, the external diameter of described heat accumulation type radiant tube 2 is 200~300mm.Adjacent described heat accumulation type radiant tube 2 outer wall
Between horizontal range be 200~500mm, vertical distance 200~700mm.The number of plies of described multilamellar heat accumulation type radiant tube 2 can be
10~25 layers.Utility model people finds, this kind of structure is arranged so that uniform distribution of temperature field in pyrolysis zone, such that it is able to aobvious
Write the fast pyrogenation efficiency improving material, and then improve the productivity of tar.
In this utility model, heat accumulation type radiant tube 2 is regenerative gas radial canal, i.e. burning is fired by radial canal body
The heat that gas produces carries out heat supply in the way of radiation.Thus, it is possible to the combustion gas being passed through in heat accumulation type radiant tube 2 by adjustment
Flow realizes the temperature to pyrolytic process and controls, such that it is able to significantly improve the fast pyrogenation efficiency of material, and then improves Jiao
The productivity of oil.
In this utility model, described heat accumulation type radiant tube 2 can also be replaced by burner or other heating plants, its technology
Scheme is not limited solely to this.
As it is shown on figure 3, described discharge zone 13 includes semicoke outlet 6.Described semicoke outlet 6 is positioned at described reactor body 1
Bottom, for will pyrolysis after semicoke 4 discharge described reactor body 1.
Concrete, described discharge zone 13 can be in inverted cone.Thus, it is possible to make to arrange smoothly through pyrogenous origin semicoke 4
Go out described discharge zone 13.Described semicoke outlet 6 should be arranged in the center of described reactor body 1 bottom as far as possible, it is simple to
Semicoke 4 in discharge zone 13 is discharged outside reactor smoothly.
Bleed umbrella 3 for discharging the pyrolysis gas produced in pyrolytic process.Described umbrella 3 of bleeding is arranged in described discharge zone 13.
Fig. 4 is umbrella 3 front view of bleeding of this utility model fast pyrolysis reactor 100.As shown in Figure 4, umbrella 3 of bleeding described in includes umbrella portion
31 and shank 32, the two gas communication connects.Described shank 32 passes the sidewall of reactor and extends to from the outside of reactor
The centre position of inside reactor.Described umbrella portion 31 is pyramidal structure, the bottom of described umbrella portion 31 orientating reaction device and umbrella portion
31 surfaces are disposed with multiple through hole.
Fig. 5 is umbrella umbrella portion 31 of the bleeding top view of fast pyrolysis reactor 100 in this utility model.As it is shown in figure 5, bleed
The top of umbrella 3 has bleeding point 33.Described bleeding point 33 top is connected with the shank 32 of umbrella 3 of bleeding.Described umbrella handle portion 32 of bleeding
For hollow structure, discharge in time outside described reactor body 1 for the pyrolysis gas that semicoke 4 is produced.Discharge outside reactor
Pyrolysis gas travels further into oil and gas separating system 301, obtains tar and pyrolysis gas.
Further, detach process for more preferably realize pyrolysis gas, 34 radiuses at the bottom of the umbrella of described umbrella 3 of bleeding can be set
For the 1/8~1/4 of described reactor body 1 width, inclination angle is 45 °~60 °.The design of such structure is more beneficial for pyrolysis gas
It is collected.
As it is shown in figure 1, described recirculating fluidized bed 200 is by described semicoke outlet 6 and described fast pyrolysis reactor 100 phase
Logical.
Further, described recirculating fluidized bed 200 also includes air intake.
It is internal that air enters into recirculating fluidized bed 200 by air intake, supports that the pyrolysis char after pulverizing is carried out fully
Burning, generates electricity.
At the same time it can also be feed feed coal in described recirculating fluidized bed 200 so that in semicoke 4 and recirculating fluidized bed 200
Feed coal carry out mixed combustion, thus be used for generating electricity.
As it is shown in figure 1, described pyrolysis oil gas processing system 300 pass through described in umbrella handle portion 32 of bleeding anti-with described fast pyrogenation
Device 100 is answered to communicate.
The shank 32 of described umbrella 3 of bleeding is internal for hollow structure.The pyrolysis gas discharging outside reactor by umbrella 3 of bleeding passes through
The bleed inside of shank 32 of umbrella 3 enters into pyrolysis oil gas processing system 300, carries out the process of pyrolysis gas further.
Further, described pyrolysis oil gas processing system 300 includes oil and gas separating system 301, pyrolysis gas cleaning system 302
And tar refining system 303.Wherein, umbrella 3 of bleeding described in is connected with described oil and gas separating system 301.Described Oil-gas Separation
The gas outlet of system 301 is connected with described pyrolysis gas cleaning system 302.The liquid outlet of described oil and gas separating system 301 with
Described tar refining system 303 connects.
Concrete, described pyrolysis gas enters into oil and gas separating system 301 by the shank 32 of umbrella 3 of bleeding is internal.Pyrolysis gas
Forming part gas and liquid after the effect of oil and gas separating system 301.Gas i.e. pyrolysis gas, liquid i.e. tar.Produce
Pyrolysis gas enters into pyrolysis gas cleaning system 302, obtains pure combustible gas by the operation such as desulfurization, deamination.The tar produced enters
To tar refining system 303, hydrogenated refining can obtain high added value oil product.
Fig. 2 is the process chart of this utility model pyrolysis of coal device and recirculating fluidized bed combined system.As in figure 2 it is shown,
The method processing coal with recirculating fluidized bed combined system with pyrolysis of coal device as above, comprises the following steps:
A, utilize described fast pyrolysis reactor that feed coal is carried out pyrolysis processing, obtain semicoke and pyrolysis gas.
Fine coal is put into reactor body 1 through material inlet 5 internal.Fine coal is warm under the effect of heat accumulation type radiant tube 2
Solve and form pyrolysis gas, and produce pyrolysis char.
B, described semicoke is sent to recirculating fluidized bed, makes described semicoke burn in described recirculating fluidized bed, be used for
Generating.
The pyrolysis char 4 of generation is delivered to recirculating fluidized bed 200 by semicoke outlet 6 internal, pyrolysis char 6 is burnt and sends out
Electricity.Utilize pyrolysis char to carry out combustion power generation, improve the utilization rate of pyrolysis char, and reduce cost of electricity-generating.Meanwhile, also
Feed coal can be fed so that semicoke 4 mixes with the feed coal in recirculating fluidized bed 200 in described recirculating fluidized bed 200
Combination burning, thus be used for generating electricity.
C, described pyrolysis gas is sent to described pyrolysis oil gas processing system by umbrella of bleeding described in discharge zone, thus to institute
State pyrolysis oil gas to process, obtain combustible gas.
Pyrolysis gas pyrolysis produced delivers to pyrolysis oil gas processing system 300, to heat by the shank 32 of umbrella 3 of bleeding is internal
Vent one's spleen and be further processed.
Described pyrolysis gas is bled after umbrella 3 is sent to described pyrolysis oil gas processing system 300 and is farther included step described in passing through
D, described step D includes: described pyrolysis gas enters oil and gas separating system 301, obtains the gas after gas-liquid separation and liquid.Described
Liquid obtains tar after tar rectification systems 303 processes.Described gas is pyrolyzed after pyrolysis gas cleaning system 302 processes
Gas.
The pyrolysis gas produced after pyrolysis is sent to oil and gas separating system 301 by the shank 32 of umbrella 3 of bleeding is internal.Pyrolysis
Gas is forming part gas and liquid after the effect of oil and gas separating system 301.Gas i.e. pyrolysis gas, liquid i.e. tar.Produce
Pyrolysis gas enter into pyrolysis gas cleaning system 302, obtain pure combustible gas by the operation such as desulfurization, deamination.The tar produced enters
Entering to tar refining system 303, hydrogenated refining can obtain high added value oil product.
Application examples
Pyrolysis of coal device as shown in Figure 1 should be utilized with recirculating fluidized bed combined system, fine coal to be pyrolyzed by use-case,
And obtain combustible gas.Treat that the particle diameter of pyrolysis feed brown coal should be less than 6~8mm.Its brown coal analytical data is shown in Table 1.Thermal decomposition product number
According to as shown in Figure 2.
Table 1: Indonesia's brown coal analytical data.
Table 2: thermal decomposition product data.
Project |
Pyrolysis gas |
Pyrolytic tar |
Semicoke |
Productivity % |
15.38 |
9.72 |
63.74 |
Compared with conventional recycle fluidized-bed combustion boiler, the hot pyrolysis char discharged from pyrolysis reactor directly enters ciculation fluidized
Bed boiler, whole system energy utilization efficiency improves 3.1%, and the income of purified gas and coal tar is converted cost of electricity-generating
In, cost of electricity-generating reduces about 6.3%, and tar is anticipated cost and reduced by 6.4%.
Each technical characteristic of above-mentioned disclosure is not limited to disclosed and other features combinations, and those skilled in the art are also
Other combinations between each technical characteristic can be carried out according to utility model purpose, be as the criterion realizing the purpose of this utility model.