CN209161815U - Pre-heated pyrocrack furnace - Google Patents
Pre-heated pyrocrack furnace Download PDFInfo
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- CN209161815U CN209161815U CN201821078074.7U CN201821078074U CN209161815U CN 209161815 U CN209161815 U CN 209161815U CN 201821078074 U CN201821078074 U CN 201821078074U CN 209161815 U CN209161815 U CN 209161815U
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- furnace body
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- pyrocrack
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Abstract
The utility model discloses pre-heated pyrocrack furnaces, are related to sludge treatment field, and the utility model includes: furnace body, hopper, to roller broken slag device, first jet, second nozzle, air entraining pipe, feed inlet, feed pipe, slag-drip opening.The upper end of furnace body is provided with feed inlet, is connected with hopper, and bottom is provided with slag-drip opening；First jet is arranged near feed inlet, sprays high-temperature fuel gas preheating material, forms material preheating zone in furnace body inner upper space；Second nozzle sprays vapor and oxidant, is arranged with synthesis gas air entraining pipe in lower portion of furnace body；It is described that roller broken slag device is arranged in lower portion of furnace body, it is used to support sludge blanket, forms heat scission reaction area, and the remaining sludge residue of spallation reaction.Pyrocrack furnace provided by the utility model makes full use of sludge itself thermal energy, while being thermally cracked to produce high added value fuel gas, pyrolysis furnace can quickly be heated, so that the sludge in furnace is rapidly reached cracking reaction temperature, and sufficiently react, improves efficiency of sludge treatment.
Description
Technical field
The utility model relates to sludge treatment field more particularly to pre-heated pyrocrack furnaces.
Background technique
Sludge can be generated during municipal sewage treatment.These sludge components are complicated, containing harmful to human body and environment
Heavy metallic salt, bacterium and parasitic ovum.As Chinese Urbanization level is higher and higher, the by-product in city --- a large amount of sludge are urgently
It is to be processed.
Currently, the Treatment of Sludge mode of mainstream is mainly burning, pyrolysis and thermal cracking both at home and abroad.Sludge directly burns easily
Generate the atmosphere pollutions such as dioxin, nitrogen oxides, particulate matter.In contrast, sludge is by thermal cracking or pyrolysis processing, both
Available fuel gas and tar, and be easy to collect the waste materials such as reluctant heavy metallic salt in the form of lime-ash, really
Recycling, the harmless treatment of sludge are accomplished.So sludge thermal cracking processing technique is paid more and more attention.
Pyrocrack furnace is the device for heat scission reaction, and the used pyrocrack furnace of sludge thermal cracking refers to coal thermal cracking more
Furnace design, common coal pyrocrack furnace mainly have fixed bed pyrocrack furnace, recirculating fluidized bed pyrocrack furnace and entrained flow thermal cracking
Furnace etc..Wherein for fixed bed pyrocrack furnace because of its technology maturation, structure is simple, is widely applied in practice.Fixed bed pyrocrack furnace
Middle material accumulation occurs redox reaction with vapor, the air or oxygen being passed through and generates on the grate of reactor lower part
Carbon monoxide and hydrogen, while releasing heat and can dry or heat top material.Fixed bed pyrocrack furnace is according to internal gas
Flow direction can be divided into updraft type fixed bed, downdraft fixed bed, horizontal draft fixed bed, wherein relatively common is upper suction
Formula and downdraft.Material is put into from top in updraft type and downdraft fixed bed pyrocrack furnace, and thermal cracking agent is fed from below into conjunction
It is drawn at gas from upper outlet or lower part.
Sludge, which enters after fixed bed pyrocrack furnace, to be gone through the processes such as dry, heating, reaction and ultimately generates synthesis gas, produced
Waste residue be discharged.The time that sludge in material bed top enters burner hearth is short, and heating is insufficient, and thermal cracking is not achieved in temperature
Minimum temperature needed for reacting, reaction rate are significantly lower than lower part material.Although lower layer's material reaction rate is very fast, temperature compared with
Height, but material fixation is not at fluidized state in fixed bed pyrocrack furnace, and reaction bed of material internal mix effect is poor, lower layer's temperature
High material is very big to the heat transmission resistance of upper materials.Above-mentioned reason causes material in traditional fixed bed pyrocrack furnace jointly and adds
It is hot slowly, the problems such as conversion zone temperature is uneven, and eventually lead to that traditional pyrocrack furnace space utilization rate is not high, efficiency of combustion is low
Under, sludge treatment capacity expection is not achieved.
Therefore, lack a kind of pyrocrack furnace in the prior art, can quickly heat into furnace sludge, so that sludge reaches satisfaction and splits
Reaction temperature condition is solved, efficiency of sludge treatment is improved.
Summary of the invention
The utility model provides pre-heated pyrocrack furnace, can quickly heat pyrolysis furnace, so that the sludge in furnace is rapid
Reach cracking reaction temperature, and sufficiently react, improves efficiency of sludge treatment.
In order to achieve the above objectives, the utility model adopts the following technical solution:
Pre-heated pyrocrack furnace, comprising: furnace body, hopper, to roller broken slag device, first jet, second nozzle, air entraining pipe, into
Material mouth, feed pipe, slag-drip opening.
Feed inlet is set at the top of furnace body, and hopper connects feed inlet junction by feed pipe and seals.Furnace body is hollow circuit cylinder
Several first jets are arranged in body, feed inlet lower section, and first jet is arranged along furnace body cross-wise direction equal circumference angle, first jet one
Furnace interior certain length is protruded at end, and the other end is passed through high-temperature fuel gas.
The main component of high-temperature fuel gas is nitrogen, carbon dioxide, and a small amount of vapor and a small amount of oxygen, high-temperature fuel gas is in furnace body
Interior burning forms material preheating zone.
Since first jet is arranged along furnace body equal circumference angle, after being passed through high-temperature fuel gas, eddy flow is formed in furnace body, is extended
Material fall time, while also volume suction is fed from the feed inlet the intracorporal sludge of furnace, sludge is in dropping process by high ambient temperatures
The heating of combustion gas, quickly completes dehydration, and material preheating zone temperature constantly rises.
Below first jet, several second nozzles are set along furnace body cross-wise direction equal circumference angle, second nozzle includes
Two rows, space crossings arrangement, second nozzle spray into vapor and oxidant into furnace body, form heat scission reaction in furnace body
Area.
Second nozzle is constantly passed through vapor and oxygen to furnace interior, when the sludge by preheating falls in pyrocrack furnace
When heat scission reaction area, heat scission reaction temperature condition is had reached, in rich water steam and oxygen atmosphere, heat can occur immediately
Cracking reaction, the reaction are exothermic reaction, and sludge can be heated by releasing heat.Heat scission reaction area uniformity of temperature profile, thermal cracking
Reactivity is high.
Bottom of furnace body setting is to roller broken slag device, furnace body lower section sealing installation slag-drip opening.The sludge of heat scission reaction area bottom
It has passed through long period heat scission reaction, the roll shaft attrition crushing that remaining lime-ash by the gap to roller broken slag device, will be rotated
At broken particle, bottom slag discharge is fallen into, then is excluded by slag-drip opening.Under the action of to roller broken slag device, upper materials be will be slow
It moves down, constantly progress heat scission reaction, until being extruded broken discharge pyrocrack furnace.
Slag-drip opening connects air entraining pipe, and air entraining pipe is persistently evacuated, and makes to form negative pressure in furnace body.
Further, inboard wall of furnace body is equipped with refractory brick, can bear the pyroreaction of furnace interior.
Further, first jet and second nozzle are furnished with flow controller, are adjustable the high-temperature fuel gas being passed through, vapor
And oxidizer flow rate.
Further, first jet and the furnace body plane where second nozzle are equipped at least one temperature sensor, use
The temperature of material preheating zone and heat scission reaction area is pinched in monitoring furnace body.
Further, bleed nozzle is provided with gas composition sensor, for monitoring the ingredient for drawing gas.
Further, the equal acquisition testing information of temperature sensor, synthesizer component sensor is to control device, control device
According to detection information, to control flow controller.
Flow controller adjusts furnace body temperature by the flow of adjusting high-temperature fuel gas, and the speed that high-temperature fuel gas is passed through is got over
Fastly, furnace body temperature is higher.
Flow of the flow controller by adjusting vapor and oxidant, the composition proportion of adjustment extraction gas, oxidant
It is passed through that speed is faster, the ratio for drawing carbon dioxide in gas is bigger.
The beneficial effects of the utility model are:
The spout of injection high-temperature fuel gas is arranged in the utility model near furnace body feed inlet, and the high-temperature fuel gas of ejection is in burner hearth
Top forms material preheating zone and is rapidly heated to heat scission reaction institute in material preheating zone after sludge enters pyrocrack furnace
Need temperature, and homogeneous heating so that sludge fall in heat scission reaction area it is material bed when, can immediately with vapor around and oxygen
Agent occurs heat scission reaction and therefore accelerates cracking reaction rate, to improve synthesis gas yield and efficiency of sludge treatment.
Detailed description of the invention
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the position A-A cross-sectional view in Fig. 1；
Fig. 3 is the position B-B cross-sectional view in Fig. 1；
Fig. 4 is the block diagram of control device.
Wherein, 1- furnace body, 2- hopper, 3- feed roller broken slag device, 4- first jet, 5- second nozzle, 6- air entraining pipe, 7-
Mouth, 8- feed pipe, 9- slag-drip opening.
Specific embodiment
To make those skilled in the art more fully understand the technical solution of the utility model, With reference to embodiment
The utility model is described in further detail.
The utility model embodiment provides pre-heated pyrocrack furnace, as shown in Figure 1, comprising:
Furnace body 1, hopper 2, to roller broken slag device 3, first jet 4, second nozzle 5, air entraining pipe 6, feed inlet 7, feed pipe 8,
Slag-drip opening 9.
Feed inlet 7 is set at the top of furnace body 1, and hopper 2 connects the sealing of 7 junction of feed inlet by feed pipe 8.
Furnace body 1 is hollow cylinder, laid inside refractory brick.Several first jets 4, the first spray are set below feed inlet 7
Mouth 4 is arranged along 1 cross-wise direction equal circumference angle of furnace body, and 1 inside certain length of furnace body is protruded into 4 one end of first jet, such as Fig. 2 institute
Show, the other end is passed through high-temperature fuel gas, forms material preheating zone in 1 inner upper space of furnace body, and form eddy flow in furnace body 1.
Below first jet 4, several second nozzles 5 are set along 1 cross-wise direction equal circumference angle of furnace body, as shown in figure 3,
Second nozzle 5 includes two rows, and space crossings arrange that second nozzle 5 sprays into vapor and oxidant into furnace body 1, in furnace
Lower space forms heat scission reaction area in body 1.
1 bottom of furnace body is arranged to roller broken slag device 3, is used to support sludge blanket, and the remaining sludge residue of spallation reaction.Furnace body
1 lower section sealing installation slag-drip opening 9, for smashed sludge residue to be discharged.Slag-drip opening 9 connects air entraining pipe 6, and air entraining pipe 6 continues
Pumping makes to form negative pressure in furnace body 1.
First jet 4 and second nozzle 5 are furnished with flow controller.Furnace body 1 where first jet 4 and second nozzle 5 is flat
Face is equipped at least one temperature sensor.6 mouthfuls of air entraining pipe are provided with gas composition sensor.
The temperature sensor, the equal acquisition testing information of the synthesizer component sensor to control device, the control
Device controls the flow controller.
Control device includes control unit PLC, LCD display module, keyboard, serial ports output module, A/D conversion module, D/A
Conversion module, power module, as shown in Figure 4.LCD display module, keyboard, serial ports output module, A/D conversion module, D/A conversion
Module is connected with control unit PLC；Wherein, A/D conversion module connection temperature sensor and gas composition sensor, will adopt
The analog signal of collection is converted into the incoming control unit PLC of digital signal and is calculated, and control signal is obtained after calculating, controls signal
Analog signal is converted to by D/A conversion module, flow controller is resent to and carries out accordingly.
The control rule of control device includes: and to be gradually increasing, explanation when heat scission reaction area temperature is higher than set temperature
Sludge temperature after preheating is higher, and the heat that heat scission reaction is released constantly is accumulated.To prevent fouling and slagging under high temperature, at this time
The flow that preheated fuel gas is passed through should be reduced, reduce the temperature of sludge preheating zone.Conversely, to accelerate heat scission reaction rate, Ying Zeng
The flow that big combustion gas is passed through, increases the temperature of material preheating zone.
When the large percentage of carbon dioxide in synthesis gas, shows that the oxidant content being passed through is excessive, oxidant should be reduced at this time
The flow being passed through.
The beneficial effects of the utility model are:
The spout of injection high-temperature fuel gas is arranged in the utility model near furnace body feed inlet, and the high-temperature fuel gas of ejection is in burner hearth
Top forms material preheating zone and is rapidly heated to heat scission reaction institute in material preheating zone after sludge enters pyrocrack furnace
Need temperature, and homogeneous heating so that sludge fall in heat scission reaction area it is material bed when, can immediately with vapor around and oxygen
Agent occurs heat scission reaction and therefore accelerates cracking reaction rate, to improve synthesis gas yield and efficiency of sludge treatment.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with power
Subject to the protection scope that benefit requires.
Claims (6)
1. pre-heated pyrocrack furnace characterized by comprising furnace body (1), hopper (2), to roller broken slag device (3), first jet
(4), second nozzle (5), air entraining pipe (6), feed inlet (7), feed pipe (8), slag-drip opening (9),
Feed inlet (7) are set at the top of furnace body (1), hopper (2) connects the sealing of feed inlet (7) junction by feed pipe (8)；
Furnace body (1) is hollow cylinder, several first jets (4) is arranged below feed inlet (7), first jet (4) is along furnace body
(1) cross-wise direction equal circumference angle is arranged, and the internal certain length of furnace body (1) is protruded into first jet (4) one end, and the other end is passed through high temperature
Combustion gas forms eddy flow in furnace body (1)；
Below first jet (4), several second nozzles (5), second nozzle are set along furnace body (1) cross-wise direction equal circumference angle
(5) comprising two rows, space crossings arrangement, second nozzle (5) penetrating vapor and oxidant into furnace body (1)；
The setting of furnace body (1) bottom is to roller broken slag device (3), furnace body (1) lower section sealing installation slag-drip opening (9)；
Slag-drip opening (9) connects air entraining pipe (6), and air entraining pipe (6) is persistently evacuated, and makes to form negative pressure in furnace body (1).
2. pre-heated pyrocrack furnace according to claim 1, which is characterized in that furnace body (1) inner wall is equipped with refractory brick.
3. pre-heated pyrocrack furnace according to claim 1, which is characterized in that first jet (4) and second nozzle (5) are matched
There is flow controller.
4. pre-heated pyrocrack furnace according to claim 3, which is characterized in that first jet (4) and second nozzle (5) institute
Furnace body (1) plane be equipped at least one temperature sensor.
5. pre-heated pyrocrack furnace according to claim 4, which is characterized in that air entraining pipe (6) mouth is provided with synthesis
Gas component sensor.
6. pre-heated pyrocrack furnace according to claim 5, which is characterized in that the temperature sensor, the synthesis gas
The equal acquisition testing information of component sensor to control device, the control device controls the flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821078074.7U CN209161815U (en) | 2018-07-09 | 2018-07-09 | Pre-heated pyrocrack furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821078074.7U CN209161815U (en) | 2018-07-09 | 2018-07-09 | Pre-heated pyrocrack furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209161815U true CN209161815U (en) | 2019-07-26 |
Family
ID=67327400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821078074.7U Expired - Fee Related CN209161815U (en) | 2018-07-09 | 2018-07-09 | Pre-heated pyrocrack furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209161815U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793664A (en) * | 2018-07-09 | 2018-11-13 | 江苏俊镕环保设备有限公司 | Pre-heated pyrocrack furnace |
-
2018
- 2018-07-09 CN CN201821078074.7U patent/CN209161815U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793664A (en) * | 2018-07-09 | 2018-11-13 | 江苏俊镕环保设备有限公司 | Pre-heated pyrocrack furnace |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20210709 |