CN207525186U - A kind of pyrolysis oven - Google Patents
A kind of pyrolysis oven Download PDFInfo
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- CN207525186U CN207525186U CN201721357502.5U CN201721357502U CN207525186U CN 207525186 U CN207525186 U CN 207525186U CN 201721357502 U CN201721357502 U CN 201721357502U CN 207525186 U CN207525186 U CN 207525186U
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Abstract
The utility model is related to a kind of pyrolysis ovens.The pyrolysis oven includes the pyrolysis section on top and the cooling section of lower part, heating unit is provided in pyrolysis section, pyrolysis section has raw coal entrance, pyrolysis gas outlet, the outlet of hot semicoke, cooling section has hot semicoke entrance, the outlet of cooling semicoke, and the hot semicoke outlet of the hot semicoke entrance and pyrolysis section of cooling section connects；Cooling section is axially inside provided with water inlet pipe, one end closing of water inlet pipe, and the other end is connect with external cooling water pump；Columned spray tube is provided on water inlet pipe, the bottom end of spray tube is connected with the inner cavity of water inlet pipe, and the surface of spray tube is provided with through-hole, also, the angle between spray tube and water inlet pipe is 15~90 °.The device of the utility model is stable, and technological process is simple, and the cooling velocity of material is fast, uniform, and cooling efficiency is high.
Description
Technical field
The utility model is related to coal conversion technology fields, and in particular to a kind of pyrolysis oven.
Background technology
Pyrolysis of coal is the important channel that Coal Clean efficiently utilizes, and a large amount of high-temperature semi-cokes (700~900 are generated after pyrolysis
DEG C), quality is about the 50%~70% of raw material coal quality.It needs to cool after semicoke discharge pyrolysis oven, it is follow-up defeated to meet
Send requirement.In the prior art frequently with the type of cooling of indirect heat exchange, changed using spiral cooler or by being set in reactor
Heat pipe cools down to realize.
When being cooled down using spiral cooler, hot semicoke enters from one end of cooler and is advanced into the another of cooler by screw rod
One end.Cooler axis and housing are passed through recirculated cooling water, and semicoke carries out heat exchange with cooler surface in cooler, and semicoke is cold
But.When the above-mentioned type of cooling is run at high temperature, easily leaked at cooler each section connecting portion sealing, gas-solid particle
It can be entered in air by screw shaft, while cooler is susceptible to mechanical breakdown and can not realize continuous and steady operation.It is another
Aspect, part helix cooler can not recycle the heat in semicoke, lead to energy dissipation.
Another type of cooling is to set heat exchanger tube in the reactor, and thermal material moves downwards through cloth by its own gravity
The heat exchanger tube in semicoke tank is put, leads to cooling water in heat exchanger tube, cools down semicoke, steam is generated after water heat absorption.Although the method
The heat in semicoke can be recycled, but since semicoke is low with cooling water indirect heat exchange efficiency, it usually needs very big heat exchange area,
So that heat exchanger volume is huge.In this way so that entire technology investment increases, system run all right reduces.
Utility model content
The utility model is intended to provide a kind of pyrolysis oven, which generates semicoke by pyrolysis of coal first, and utilizes simultaneously
The cooling section of pyrolysis oven hypomere realizes the cooling of semicoke, and cooling efficiency is high, and technological process is simple.
The utility model provides a kind of pyrolysis oven, and the pyrolysis oven includes the pyrolysis section on top and the cooling section of lower part,
Heating unit is provided in the pyrolysis section, the pyrolysis section has raw coal entrance, pyrolysis gas outlet, the outlet of hot semicoke, institute
Cooling section is stated with hot semicoke entrance, the outlet of cooling semicoke, hot semicoke entrance and the pyrolysis section of the cooling section
Hot semicoke outlet connection.
The cooling section is axially inside provided with water inlet pipe, one end closing of the water inlet pipe, the other end and outside
Cooling water pump connects.Columned spray tube, the bottom end of the spray tube and the water inlet pipe are provided on the water inlet pipe
Inner cavity connection, the surface of the spray tube is provided with through-hole, also, the angle between the spray tube and the water inlet pipe is
15~90 °.
As the utility model preferred embodiment, multiple supporting ribs, the support are axially set along the water inlet pipe
One end of muscle is fixed on the cooling section inner wall, and the other end is support ring, and the support ring is sleeved on the water inlet pipe.
Further, the horizontal distance between the support ring and the water inlet pipe outer wall is 1~3mm.
As the utility model preferred embodiment, the area of the through-hole set on the surface of the spray tube accounts for described
The 0.5~1.5% of spray tube surface area.
As the utility model preferred embodiment, the height H of the pyrolysis section1With the height H of the cooling section2's
Ratio is H1/H2=(1:1)~(5:1).
As the utility model preferred embodiment, the height H of the cooling section2With the internal diameter D's of the cooling section
Ratio is H2/ D=(2:1)~(6:1).
As the utility model preferred embodiment, the water inlet pipe is axially provided with one group or more along the cooling section
Group.The spray tube is axially provided with one or more groups of along the water inlet pipe.
In the pyrolysis oven of the utility model, pyrolysis pars infrasegmentalis is provided with cooling section, the pyrolysis of material and cooling are concentrated
In one apparatus, individual cooling device is saved, technological process is simple, and device is stable.Also, it is set in cooling section
Multigroup spray tube has been put, has been cooled down after cooling water atomization is sprayed with the direct counter current contacting of material so that the cooling of material is fast
It is fast, uniform, substantially increase cooling efficiency.The steam that cooling procedure generates, which ascends into, occurs gasification reaction in pyrolysis section, carry
High pyrolysis gas yield, also, the hydrogen generated that gasifies has hydrogenation to tar, improves the quality of tar.
Description of the drawings
Fig. 1 is the structure diagram of pyrolysis oven in a kind of embodiment of the utility model.
Fig. 2 is the structure diagram of pyrolysis oven in the utility model another embodiment.
Fig. 3 is the sectional view of Section A-A in Fig. 1 and Fig. 2.
Reference numeral in attached drawing is as follows：
1- pyrolysis sections；
2- cooling sections, 201- supporting ribs, 202- spray tubes, 203- water inlet pipes, 204- discharging machines；
3- cooling water pumps.
Specific embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when the embodiment of the utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only rather than the limitation to the utility model.
As depicted in figs. 1 and 2, pyrolysis oven provided by the utility model includes the pyrolysis section 1 on top and the cooling section of lower part
2。
Heating unit is provided in pyrolysis section 1.Pyrolysis section 1 has raw coal entrance, pyrolysis gas outlet, the outlet of hot semicoke.
As one of preferred embodiment, raw coal entrance is arranged on the top of pyrolysis section 1, and pyrolysis gas outlet is arranged on pyrolysis
The middle and upper part of 1 side wall of section, hot semicoke outlet are arranged on the bottom of pyrolysis section 1.It, can in order to export pyrolysis gas product in time
With the one or more pyrolysis gas outlets of setting, when multiple pyrolysis gas outlets are set, equidistant or non-equidistant shape can be taken
Formula.
Cooling section 2 has pyrolysis char entrance, the outlet of cooling semicoke.Cooling semicoke exit is provided with discharging machine 204.
Preferably, hot semicoke entrance is arranged on the top of cooling section 2, and the outlet of cooling semicoke is arranged on the bottom of cooling section 2.Wherein,
The hot semicoke entrance of cooling section 2 and the hot semicoke outlet of pyrolysis section 1 connect.
Cooling section 2 is axially inside provided with water inlet pipe 203.Wherein, one end closing of water inlet pipe 203, the other end with it is outer
The cooling water pump 3 in portion connects.Preferably, interlocking between the temperature measuring point and cooling water pump of cooling section 2 is set, realizes the essence to temperature
Quasi- control.Water inlet pipe 203 enters from the bottom of cooling section 2, extend near the junction of pyrolysis section 1 and cooling section 2.Water inlet
Pipe 203 can set one group, see Fig. 1；Alternatively, water inlet pipe 203 can set multigroup, multigroup water inlet pipe 203 is along axial point of cooling section 2
Cloth is shown in Fig. 2, and cooling temperature can more accurately be controlled by setting during multigroup water inlet pipe 203.
Columned spray tube 202 is provided on water inlet pipe 203, as shown in Figure 3.The bottom end of spray tube 202 and water inlet
The inner cavity connection of pipe 203, the surface of spray tube 202 is provided with through-hole, can make the cooling water uniform-mist being passed through by water inlet pipe 203
Change.The direction of through-hole along cooling section 2 axially upwards.The area of the through-hole set on the surface of spray tube 202 accounts for 202 table of spray tube
The 0.5~1.5% of area.The water spray of different height spray tube 202 can be controlled by the number and aperture that set through-hole.
Cooling water by cooling water pump 3 by cooling section 2 different height be sent into water inlet pipe 203 in, then, cooling water via
The atomization of spray tube 202 sprays.It, can in a manner that atomizing spray is set in cooling section 2 in the pyrolysis oven of the utility model
Reduce the water of each through-hole spray so that spray is more uniform, effectively prevents reducing lacking for condensation effect when water is concentrated
It falls into, meanwhile, the contact area of hot semicoke and shower water is also added, accelerates material mass-and heat-transfer, improves heat exchange efficiency.
Angle β between spray tube 202 and water inlet pipe 203 is 15~90 °.Preferably, β is 60 ° so that cooling effect is more
Add uniformly.
Further, spray tube 202 shakes on water inlet pipe 203 in order to prevent, at the different height of water inlet pipe 203
It is provided with supporting rib 201.Wherein, one end of supporting rib 201 is fixed on the inner wall of cooling section 2, and the other end is provided with support ring
(not shown), support ring are sleeved on water inlet pipe 203.Horizontal distance between 203 outer wall of support ring and water inlet pipe for 1~
3mm ensures that water inlet pipe 203 being capable of free wxpansion.
According to the difference of 2 height of cooling section, spray tube 202 is provided with one or more groups of, and every group of spray tube 202 includes one
Or multiple spray tubes.Multigroup spray tube 202 is set along water inlet pipe 203 is axial.According to the difference of process conditions, every group of spray tube
It can equidistant or non-equidistantly distributed between 202.Multiple spray tubes 202 in every group are along 203 radially uniform setting of water inlet pipe.
The design of 202 structure of spray tube in the utility model combines the characteristic of hot semicoke, is integrally cooled down from optimization
Angle carries out the design of details so that heat exchange efficiency higher, cooling are more uniform.
In the utility model, the preferred heat accumulating type down-flow fluidized bed using ECT of pyrolysis oven, using heat accumulation type radiant tube as heating in pyrolysis section 1
Source, cooling section 2 is by the way of moving bed blanking, when the hot semicoke that pyrolysis section 2 is pyrolyzed raw coal formation is fallen in cooling section 2
When, the heat exchange rate of hot semicoke and 202 atomizing spray of spray tube can be accelerated so that hot semicoke is quickly cooled down.And
And all spray tubes 202 set in cooling section 2 are all located in bed.
In order to realize that the height of material and heat couples, the height H of pyrolysis section 1 in the pyrolysis oven of the utility model1
With the height H of cooling section 22Ratio be H1/H2=(1:1)~(5:1).According to the difference of process conditions, the height of cooling section 2
H2Ratio with the internal diameter D of cooling section 2 is H2/ D=(2:1)~(6:1).Also, for the ease of the heat of the reaction generation of pyrolysis section 1
State semicoke is fallen in cooling section 2, and the angle α of changeover portion is 20~60 ° between pyrolysis section 1 and cooling section 2.
Based on Fig. 1 and system shown in Fig. 2, the utility model also proposed a kind of method：
Raw coal is sent into pyrolysis oven, starts heating unit, raw coal initially enters pyrolysis section 1 and carries out pyrolytic reaction, obtains
Pyrolysis gas and hot semicoke.As the utility model preferred embodiment, the temperature for controlling pyrolysis section is 850~900 DEG C.
Wherein, hot semicoke, which falls, enters in cooling section 2, starts cooling water pump 3 and is passed through cooling water into water inlet pipe 203.
Cooling water via on spray tube 202 through-hole be atomized spray, and with the direct counter current contacting of hot semicoke, hot semicoke is cooled down,
Obtain cooling semicoke.Cooling semicoke is discharged via the discharging machine 204 of 2 bottom of cooling section.Preferably, the temperature for controlling cooling section is
100~120 DEG C.It is 5~10m/s to control the speed that cooling water is sprayed from through-hole atomization.In the cooling procedure of hot semicoke
In, it remains that cooling section 2 is in full material position, the material position of cooling section 2 is controlled by adjusting the discharging frequency of discharging machine 204.
The steam that hot semicoke cooling procedure generates is run up into pyrolysis section 1, is occurred in pyrolysis section 1 with raw coal
Gasification reaction, the synthesis gas for reacting generation are discharged together with pyrolysis gas from pyrolysis gas outlet, improve the yield of pyrolysis gas.And
And the hydrogen of gasification generation is conducive to the lighting of product tar, improves tar quality.Meanwhile steam is when moving upwards
Double of coke bed layer plays the role of loosening, effectively eliminates semicoke " bridge formation effect ", is conducive to the discharge of semicoke.
Specifically, cooling water enters after being atomized via the spray tube 202 of 203 different height of water inlet pipe in cooling section 2, according to
The difference of different height temperature in cooling section 2, is passed through cooling water into each region respectively, to realize each region uniform decrease in temperature.It is cold
But the temperature of 2 different zones of section is controlled by the water spray of spray tube 202, passes through 2 temperature measuring point of cooling section and cooling water pump 3
Between the interlocking that sets, can realize and 2 each regional temperature of cooling section is precisely controlled.Also, in cooling section 2 from top to bottom
Temperature reduce successively, therefore, the area accounting of through-hole continuously decreases from top to bottom on setting spray tube 202 surface.Also,
In the entire cooling procedure of cooling section 2, the temperature of semicoke is controlled to be higher than the dew-point temperature of vapor.
Above-mentioned cooling procedure can realize quick, the uniform cooling of hot semicoke, avoid the occurrence of localized hyperthermia or condensation
The phenomenon that, so that it is guaranteed that the operation of system continuous-stable.
Embodiment 1
Pyrolysis section uses heat accumulating type down-flow fluidized bed using ECT in pyrolysis oven, and cooling section carries out blanking using moving bed.The height of pyrolysis section
H1With the height H of cooling section2Ratio be H1/H2=3:1.Changeover portion angle α between pyrolysis section and cooling section is 45 °.Cooling
The height H of section2Ratio with internal diameter D is H2/ D=4:1.Angle β between spray tube and water inlet pipe is 60 °.Spray pipe surface
The area of the through-hole of upper setting accounts for the 0.8% of spray tube surface area.The speed that cooling water is sprayed from through-hole atomization is 6m/s.Into
3 groups of water inlet pipes are provided in water section, are axially distributed along water inlet pipe.In pyrolysis section, pyrolysis gas outlet apart from pyrolysis section furnace roof away from
From accounting for the 1/3 of pyrolysis section height.Raw coal is sent into pyrolysis section, is pyrolyzed at 850 DEG C first, the hot semicoke of generation into
Enter cooling section, cooled down at 100 DEG C, finally obtain cooling semicoke and discharge pyrolysis oven via discharging machine.
Embodiment 2
Pyrolysis section uses heat accumulating type down-flow fluidized bed using ECT in pyrolysis oven, and cooling section carries out blanking using moving bed.The height of pyrolysis section
H1With the height H of cooling section2Ratio be H1/H2=5:1.Changeover portion angle α between pyrolysis section and cooling section is 25 °.Cooling
The height H of section2Ratio with internal diameter D is H2/ D=2:1.Angle β between spray tube and water inlet pipe is 60 °.Spray pipe surface
The area of the through-hole of upper setting accounts for the 1.5% of spray tube surface area.The speed that cooling water is sprayed from through-hole atomization is 8m/s.Into
2 groups of water inlet pipes are provided in water section, are axially distributed along water inlet pipe.In pyrolysis section, pyrolysis gas outlet apart from pyrolysis section furnace roof away from
From accounting for the 1/2 of pyrolysis section height.Raw coal is sent into pyrolysis section, is pyrolyzed at 900 DEG C first, the hot semicoke of generation into
Enter cooling section, cooled down at 120 DEG C, finally obtain cooling semicoke and discharge pyrolysis oven via discharging machine.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the utility model example,
And it is not intended to limit the embodiments.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And thus
Among changes and variations that derived from are still in the scope of protection of the utility model.
Claims (7)
1. a kind of pyrolysis oven, which is characterized in that the pyrolysis oven includes the pyrolysis section on top and the cooling section of lower part, the pyrolysis
Heating unit is provided in section, the pyrolysis section has raw coal entrance, pyrolysis gas outlet, the outlet of hot semicoke, the cooling section
With hot semicoke entrance, the outlet of cooling semicoke, the hot semicoke entrance of the cooling section and the hot semicoke of the pyrolysis section
Outlet connection；
The cooling section is axially inside provided with water inlet pipe, one end closing of the water inlet pipe, the other end and external cooling
Water pump connects；Columned spray tube is provided on the water inlet pipe, the bottom end of the spray tube is interior with the water inlet pipe
Chamber connects, and the surface of the spray tube is provided with through-hole, also, the angle between the spray tube and the water inlet pipe be 15~
90°。
2. pyrolysis oven according to claim 1, which is characterized in that multiple supporting ribs, institute are axially set along the water inlet pipe
The one end for stating supporting rib is fixed on the cooling section inner wall, and the other end is support ring, and the support ring is sleeved on the water inlet pipe
On.
3. pyrolysis oven according to claim 2, which is characterized in that the water between the support ring and the water inlet pipe outer wall
Flat distance is 1~3mm.
4. pyrolysis oven according to claim 1, which is characterized in that the area of the through-hole set on the surface of the spray tube
Account for the 0.5~1.5% of the spray tube surface area.
5. pyrolysis oven according to claim 1, which is characterized in that the height H of the pyrolysis section1With the height of the cooling section
Spend H2Ratio be H1/H2=(1:1)~(5:1).
6. pyrolysis oven according to claim 1, which is characterized in that the height H of the cooling section2In the cooling section
The ratio of diameter D is H2/ D=(2:1)~(6:1).
7. pyrolysis oven according to claim 1, which is characterized in that the water inlet pipe is axially provided with one along the cooling section
Group is multigroup；The spray tube is axially provided with one or more groups of along the water inlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721357502.5U CN207525186U (en) | 2017-10-20 | 2017-10-20 | A kind of pyrolysis oven |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721357502.5U CN207525186U (en) | 2017-10-20 | 2017-10-20 | A kind of pyrolysis oven |
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| CN207525186U true CN207525186U (en) | 2018-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619670A (en) * | 2017-10-20 | 2018-01-23 | 北京神雾电力科技有限公司 | A kind of pyrolysis oven and method for pyrolysis |
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2017
- 2017-10-20 CN CN201721357502.5U patent/CN207525186U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107619670A (en) * | 2017-10-20 | 2018-01-23 | 北京神雾电力科技有限公司 | A kind of pyrolysis oven and method for pyrolysis |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200212 Address after: No. 1391, south side, 10th floor, new material venture building, No. 7, Fenghui Middle Road, Haidian District, Beijing Patentee after: Beijing Jiejing Environmental Protection Technology Co.,Ltd. Address before: 102200 Beijing city Changping District Machi Town kamis Road No. 18 building 201 room 2 Patentee before: BEIJING SHENWU POWER TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210423 Address after: 433099 B2205 room, B District, Xintiandi International Plaza, south of Golden Avenue, Xiantao, Hubei. Patentee after: Xiantao Fuzhong Biotechnology Co.,Ltd. Address before: No. 1391, south side, 10th floor, new material venture building, No. 7, Fenghui Middle Road, Haidian District, Beijing Patentee before: Beijing Jiejing Environmental Protection Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20221111 Address after: 430300 rooms 401, 402 and 403, 4th floor, B3 plant, No. 8, Chuanlong Avenue, Linkong economic and industrial demonstration park, Huangpi District, Wuhan City, Hubei Province Patentee after: Wuhan Lando Biotechnology Co.,Ltd. Address before: 433099 B2205 room, B District, Xintiandi International Plaza, south of Golden Avenue, Xiantao, Hubei. Patentee before: Xiantao Fuzhong Biotechnology Co.,Ltd. |
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| TR01 | Transfer of patent right |