CN214781655U - Biomass pyrolysis device with system operating pressure being positive pressure - Google Patents
Biomass pyrolysis device with system operating pressure being positive pressure Download PDFInfo
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- CN214781655U CN214781655U CN202023335651.6U CN202023335651U CN214781655U CN 214781655 U CN214781655 U CN 214781655U CN 202023335651 U CN202023335651 U CN 202023335651U CN 214781655 U CN214781655 U CN 214781655U
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- rotary kiln
- booster fan
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
The utility model relates to a system operating pressure is living beings pyrolysis device of malleation, including rotary kiln, flabellum-free booster fan, spray column, gaseous booster fan, packed tower, electric precipitation, gaseous buffer cabinet, feeding system and pipe-line system of keeping in. The beneficial effects are as follows: the utility model discloses a device can make and be the pressure-fired operation in the rotary kiln, keeps through the purified gas of proper amount recirculation, and the spray column is the malleation operation, and gas pressure is provided by the flabellum-free booster fan that the rotary kiln export set up, and the rotary kiln feed inlet adopts double-deck push-pull valve and lets in the sealed gas seal of inertia at the intermediate layer, can adopt conventional scale to seal between rotary kiln and kiln head, the kiln tail sealed cowling, has simple structure, easily realizes, and the operation is stable, safe and reliable, difficult jam, the characteristics that the system fault rate is low.
Description
Technical Field
The utility model relates to a living beings pyrolysis treatment technical field especially relates to a living beings pyrolysis device that system operating pressure is malleation.
Background
Pyrolysis is one of the methods for treating biomass, and generally includes a pyrolysis furnace and its gas purification facilities. At present, a pure dry distillation pyrolysis rotary kiln device generates pyrolysis gas by pyrolyzing biomass fuel through an external heating rotary kiln. The pressure of pyrolysis gas generated in the rotary kiln of the device is very low, and if the induced draft fan is directly arranged behind the rotary kiln purification device, negative pressure is easily formed on equipment at the front end of the induced draft fan, and air possibly leaks into system equipment. The pyrolysis furnace and the purification device may cause explosion of the pyrolysis furnace once air leaks into the pyrolysis furnace and cause explosion of the electric dust remover once the pyrolysis gas mixed with excessive air enters the purification device provided with the electric dust remover. Therefore, the application of a pyrolysis gas generator operated at negative pressure is definitely prohibited in the specification. Therefore, whether to effectively control the operating pressure of each device within the system is critical to whether the system is allowed to produce safely.
SUMMERY OF THE UTILITY MODEL
For overcoming the prior art defect, the utility model provides a technical problem provide a system operating pressure is living beings pyrolysis device of malleation, simple structure, easily realize, the operation is stable, safe and reliable, difficult jam, the system fault rate is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a biomass pyrolysis device with a positive system operating pressure comprises a rotary kiln, a flabellum-free booster fan, a spray tower, a gas booster fan, a packed tower, electric dust removal, a temporary gas storage buffer cabinet, a feeding system and a pipeline system, and is characterized in that the rotary kiln consists of a rotary kiln head sealing cover, a rotary kiln tail sealing cover and pressure measuring points, wherein the rotary kiln head sealing cover and the rotary kiln tail sealing cover are respectively provided with the pressure measuring points which are respectively arranged at two ends of the rotary kiln; the flabellum-free booster fan is arranged at the outlet end of the rotary kiln and is connected with the spray tower, and the spray tower is sequentially connected with the gas booster fan, the packed tower, the electric dust collector and the gas temporary storage buffer cabinet; the pipeline system consists of a pipeline, an inlet valve of the flabellless booster fan, an inlet valve of a rotary kiln head sealing cover and a branch pipeline, wherein one end of the pipeline is connected with the temporary gas storage buffer cabinet, the other end of the pipeline is connected with the rotary kiln head sealing cover through the inlet valve of the rotary kiln head sealing cover, and the inlet valve of the flabellless booster fan is arranged on the branch pipeline between the flabellless booster fan and the pipeline; the feeding system comprises feeder hopper, double-deck picture peg door and the sealed pipeline of inert gas, and wherein double-deck picture peg door is two, and the certain distance setting of interval sets up on the feeder hopper, and the sealed pipeline of inert gas is connected with the feeder hopper and is located the position between two double-deck picture peg doors, and the feeder hopper setting is at the entry end of rotary kiln.
The flabellum-free booster fan is characterized in that no flabellum is arranged in a gas circulation channel, purified gas from the gas temporary storage buffer cabinet is introduced into the gas circulation channel, and the gas enters the cylindrical air channel interlayer from a channel radial pipeline and is sprayed out from an outlet to provide power for pyrolysis gas generated by the rotary kiln.
And the pressure measuring point and an inlet valve of a sealing cover of the rotary kiln head are controlled in an interlocking way.
The inert gas for sealing is preferably nitrogen.
The circulating spraying liquid in the spraying tower is alkali liquor.
The gas booster fan is preferably a glass fiber reinforced plastic centrifugal blower.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model can realize the positive pressure operation of the rotary kiln and each device for gas purification;
2) the utility model uses the fan without fan blades, so that the dust and tar at the first stage supercharging position can not be blocked basically;
3) the alkali liquor spray tower is used in front of the booster fan, the fan is made of glass fiber reinforced plastic, the booster fan is not easy to be blocked by a large amount of dust and tar, and is not easy to be corroded by acid gas atmosphere, and the service life of subsequent equipment is longer;
4) the utility model arranges the recirculation clean pyrolysis gas inlet point at the feeding position of the kiln head of the rotary kiln, which can ensure the positive pressure in the rotary kiln;
5) the utility model discloses a security of conventional, simple sealed mode and solved equipment operation, whole cost is low.
Drawings
Fig. 1 is a schematic view of the process principle of the present invention.
In the figure: 1-rotary kiln 1-1-shaking head sealing cover 1-2-kiln tail sealing cover 1-3-pressure measuring point 2-flabellum-free booster fan 3-spray tower 4-gas booster fan 5-packing tower 6-electric dust removal 7-gas temporary storage buffer cabinet 8-feed hopper 8-1-double-layer plug board door 8-2-inert gas sealing pipeline 9-1-flabellum-free booster fan inlet valve 9-2-rotary kiln head sealing cover inlet valve 9-3-branch pipeline
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in figure 1, the utility model relates to a biomass pyrolysis device with positive system operating pressure, which comprises a rotary kiln 1, a flabellum-free booster fan 2, a spray tower 3, a gas booster fan 4, a packed tower 5, an electric dust collector 6, a gas temporary storage buffer cabinet 7, a feeding system and a pipeline system, wherein the rotary kiln 1 consists of a rotary kiln head sealing cover 1-1, a rotary kiln tail sealing cover 1-2 and pressure measuring points 1-3, wherein the rotary kiln head sealing cover 1-1 and the rotary kiln tail sealing cover 1-2 are respectively provided with the pressure measuring points 1-3 which are respectively arranged at two ends of the rotary kiln 1; the flabellum-free booster fan 2 is arranged at the outlet end of the rotary kiln 1 and is connected with the spray tower 3, and the spray tower 3 is sequentially connected with the gas booster fan 4, the packed tower 5, the electric dust collector 6 and the gas temporary storage buffer cabinet 7; the pipeline system consists of a pipeline 9, an inlet valve 9-1 of the flabellum-free booster fan, an inlet valve 9-2 of a rotary kiln head sealing cover and a branch pipeline 9-3, wherein one end of the pipeline 9 is connected with the temporary gas storage buffer cabinet 7, the other end of the pipeline is connected with the rotary kiln head sealing cover 1-1 through the inlet valve 9-2 of the rotary kiln head sealing cover, and the inlet valve 9-1 of the flabellum-free booster fan is arranged on the branch pipeline 9-3 between the flabellum-free booster fan 2 and the pipeline 9; the feeding system comprises two feeding hoppers 8, two double-layer inserting plate doors 8-1 and an inert gas sealing pipeline 8-2, wherein the two double-layer inserting plate doors 8-1 are arranged on the feeding hoppers 8 at a certain interval, the inert gas sealing pipeline 8-2 is connected with the feeding hoppers 8 and is positioned between the two double-layer inserting plate doors 8-1, and the feeding hoppers 8 are arranged at the inlet ends of the rotary kilns 1.
No fan blade is arranged in the gas circulation channel of the blade-free booster fan 2, purified gas from the gas temporary storage buffer cabinet 7 is introduced into the gas circulation channel, and the gas enters the cylindrical air channel interlayer from the radial pipeline of the channel and is sprayed out from the outlet to provide power for pyrolysis gas generated by the rotary kiln.
And the pressure measuring point 1-3 and a rotary kiln head sealing cover inlet valve 9-2 are controlled in an interlocking manner.
Further, in order to prevent air leakage from the feed inlet 8, the feed inlet 8 is sealed by adopting a double-layer gate valve 8-1 and introducing inert sealing gas 8-2 into the interlayer, and the sealing gas is preferably nitrogen.
The circulating spraying liquid in the spraying tower 3 is alkali liquor which is used for neutralizing acid components in the gas, and the service life of subsequent equipment is prolonged.
The gas booster fan preferentially selects a glass fiber reinforced plastic centrifugal blower to reduce the influence of corrosive media in front-end gas, and in addition, the gas booster fan 4 is arranged at the position behind the spray tower 3 and in front of the packing tower 5 and the electric dust remover 6, so that the influence of dust, tar and corrosive liquid on the gas booster fan 4 and other equipment is reduced.
The working principle comprises the following process steps and methods:
1) controlling the micro positive pressure of the rotary kiln: according to the feedback of pressure measuring points 1-3 arranged at two ends of the rotary kiln 1, the flow of the recirculated purified gas introduced into the rotary kiln 1 is controlled by adjusting the opening of an inlet valve 9-2 of a sealing cover of the rotary kiln head, so that the rotary kiln 1 can operate at micro-positive pressure;
2) providing power for the pyrolysis gas before the inlet of the gas booster fan 4: the air quantity of purified gas from the gas temporary storage buffer cabinet 7 introduced into the flabellum-free booster fan 2 is controlled by adjusting the opening size of the inlet valve 9-1 of the flabellum-free booster fan, a power fan in the flabellum-free booster fan 2 is pressurized to form high-speed jet air flow, and the high-speed jet air flow drives pyrolysis gas to flow through the viscosity of the gas and the formed local pressure drop, so that the power required by the pyrolysis gas generated by the rotary kiln is provided. The bladeless booster fan 2 provides a small excess of purified pyrolysis gas, so that the inlet of the gas booster fan 4 is always kept at positive pressure without causing negative pressure;
3) controlling the outlet of the gas booster fan 4 to be in positive pressure: because the power that the flabellum-free booster fan 2 can provide is smaller, the gas booster fan 4 configured by the system should be arranged in front as much as possible; the booster fan that has the flabellum can't adapt to a large amount of dirt and tar, so gaseous booster fan 4 sets up between spray column 3 and packed tower 5, for pyrolysis gas provides main power, makes equipment such as packed tower 5, electrostatic precipitator 6, the gaseous buffer cabinet 7 that keeps in of 4 exports of gaseous booster fan mallet operation steadily.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A biomass pyrolysis device with a positive system operating pressure comprises a rotary kiln, a flabellum-free booster fan, a spray tower, a gas booster fan, a packed tower, electric dust removal, a temporary gas storage buffer cabinet, a feeding system and a pipeline system, and is characterized in that the rotary kiln consists of a rotary kiln head sealing cover, a rotary kiln tail sealing cover and pressure measuring points, wherein the rotary kiln head sealing cover and the rotary kiln tail sealing cover are respectively provided with the pressure measuring points which are respectively arranged at two ends of the rotary kiln; the flabellum-free booster fan is arranged at the outlet end of the rotary kiln and is connected with the spray tower, and the spray tower is sequentially connected with the gas booster fan, the packed tower, the electric dust collector and the gas temporary storage buffer cabinet; the pipeline system consists of a pipeline, an inlet valve of the flabellless booster fan, an inlet valve of a rotary kiln head sealing cover and a branch pipeline, wherein one end of the pipeline is connected with the temporary gas storage buffer cabinet, the other end of the pipeline is connected with the rotary kiln head sealing cover through the inlet valve of the rotary kiln head sealing cover, and the inlet valve of the flabellless booster fan is arranged on the branch pipeline between the flabellless booster fan and the pipeline; the feeding system comprises feeder hopper, double-deck picture peg door and the sealed pipeline of inert gas, and wherein double-deck picture peg door is two, and the certain distance setting of interval sets up on the feeder hopper, and the sealed pipeline of inert gas is connected with the feeder hopper and is located the position between two double-deck picture peg doors, and the feeder hopper setting is at the entry end of rotary kiln.
2. The biomass pyrolysis device with the system operating pressure being positive pressure according to claim 1, wherein no fan blade is arranged in the gas circulation channel of the bladeless booster fan.
3. The biomass pyrolysis device with the system operating pressure being positive pressure as claimed in claim 1, wherein the pressure measuring point is controlled in an interlocking manner with an inlet valve of a sealing cover of a rotary kiln head.
4. The biomass pyrolysis device with the system operating pressure being positive pressure according to claim 1, wherein the inert gas for sealing is nitrogen.
5. The biomass pyrolysis device with the system operating pressure being positive pressure according to claim 1, characterized in that the circulating spray liquid in the spray tower is alkali liquor.
6. The biomass pyrolysis device with the system operating pressure being positive pressure according to claim 1, wherein the gas booster fan is a glass fiber reinforced plastic centrifugal blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335651.6U CN214781655U (en) | 2020-12-30 | 2020-12-30 | Biomass pyrolysis device with system operating pressure being positive pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023335651.6U CN214781655U (en) | 2020-12-30 | 2020-12-30 | Biomass pyrolysis device with system operating pressure being positive pressure |
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| Publication Number | Publication Date |
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| CN214781655U true CN214781655U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023335651.6U Active CN214781655U (en) | 2020-12-30 | 2020-12-30 | Biomass pyrolysis device with system operating pressure being positive pressure |
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| CN (1) | CN214781655U (en) |
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2020
- 2020-12-30 CN CN202023335651.6U patent/CN214781655U/en active Active
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