CN112126470A - TFB gasification furnace with double-stage sealed feeding - Google Patents
TFB gasification furnace with double-stage sealed feeding Download PDFInfo
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- CN112126470A CN112126470A CN202011220617.6A CN202011220617A CN112126470A CN 112126470 A CN112126470 A CN 112126470A CN 202011220617 A CN202011220617 A CN 202011220617A CN 112126470 A CN112126470 A CN 112126470A
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- gasification
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- feeding
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- gasification chamber
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a TFB gasification furnace with double-stage sealed feeding, which comprises a gasification chamber, a cooling section and a feeding device. The gasification chamber sequentially comprises a gradually expanding area, an equal cross section area and a gradually reducing area from bottom to top, and the cooling section is connected with the top of the gradually reducing area and is arranged for an equal cross section straight section. The feeding device comprises a hopper, a screw feeder, a roller feeder and a blanking channel which are sequentially connected. The screw feeder is arranged below the hopper and forms step feeding with the roller feeder. A sealing valve is arranged at the bottom of the hopper, and a star-shaped feeding valve is arranged in the blanking channel. The inclined plane of the gradually reducing area of the gasification chamber is provided with a discharge hole communicated with the blanking channel. The invention has the advantages of uniform and stable feeding, good gasification effect and the like.
Description
Technical Field
The invention relates to a TFB gasification furnace with double-stage sealed feeding, belonging to the field of gasification.
Background
When various high-moisture low-calorific-value wastes are subjected to thermal treatment, the problems of unstable material flow, large temperature fluctuation and the like exist in the processes of feeding, gasification and combustion due to high moisture content and nonuniform size of the wastes.
The waste has complex components, variable forms and lower heat value, and the Turbulent Fluidized Bed (TFB) is obviously advantageous to be used in the gasification process. But need through optimizing feeder on preliminary broken basis, guarantee the even stability of feeding under the sealed prerequisite of feeding system.
Disclosure of Invention
The invention aims to provide a TFB gasification furnace with double-stage sealed feeding, which ensures the air tightness of the gasification furnace through double-stage sealed feeding, simultaneously feeds from the upper side surface, can obtain the maximum falling stroke, improves the heat value due to drying in the process, and simultaneously converts the components easy to pyrolyze and gasify in advance, thereby obviously improving the stability of the gasification process.
The invention is realized by the following technical scheme:
a TFB gasification furnace with double-stage sealed feeding comprises a gasification chamber, a cooling section arranged at the top of the gasification chamber, and a feeding device arranged on one side of the gasification chamber.
The gasification chamber sequentially comprises a gradually expanding area, an equal-section area and a gradually reducing area from bottom to top, the cooling section is connected with the top of the gradually reducing area, and the cooling section is arranged in an equal-section straight section.
The feeding device comprises a hopper, a screw feeder, a roller feeder and a blanking channel which are connected in sequence; the screw feeder is arranged below the hopper and forms step feeding with the roller feeder; a sealing valve is arranged at the bottom of the hopper, and a star-shaped feeding valve is arranged in the blanking channel.
The gasification chamber is provided with a discharge port communicated with the blanking channel, and the discharge port is arranged on the inclined plane of the gradually-reducing area.
And the wall surface of the cooling section close to one side of the discharge port extends downwards to the lower part of the discharge port to form a flow baffle.
The bottom of the gasification chamber is provided with a primary gasification gas air distribution device for introducing primary gasification gas; and a plurality of secondary gasification gas nozzles are arranged at the joints of the equal section area and the gradually expanding area of the gasification chamber and used for introducing secondary gasification gas.
In the technical scheme, the central axis of the blanking channel is vertical to the inclined plane of the reducing area provided with the discharge hole.
In the above technical scheme, the sealing valve at the bottom of the hopper is a gate valve.
In the technical scheme, the screw feeder is a shaftless screw feeder; the outlet section of the roller feeder is arranged in a gradually reducing mode.
In the technical scheme, the top of the reducing zone of the gasification chamber is also provided with a third gasified gas nozzle which is positioned at the inlet of the cooling section.
The invention has the following advantages and beneficial effects: the feeding from the upper part can obtain the maximum falling stroke, and meanwhile, the arrangement of the flow baffle can prevent the feeding from being directly sucked out of the gasification chamber by gas coils.
Drawings
FIG. 1 is a schematic view of a dual stage sealed feed TFB gasifier according to the present invention.
In the figure: 1-a gasification chamber; 2-a cooling section; 3-a feeding device; 4-secondary gasification gas nozzle; 5-flow baffle; 6-three times of gasified gas nozzles; 7-a separator; 8-dechlorination and dust removal device; 9-a desulfurizing tower; 10-gas holder.
Detailed Description
The following describes the embodiments and operation of the present invention with reference to the accompanying drawings.
The terms of orientation such as up, down, left, right, front, and rear in the present specification are established based on the positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.
As shown in figure 1, the TFB gasification furnace with double-stage sealed feeding comprises a gasification chamber 1 and a cooling section 2 arranged at the top of the gasification chamber 1, wherein the cooling section is a straight section with a uniform cross section. The gasification chamber 1 is designed according to a turbulent bed and sequentially comprises a gradually expanding area, an equal section area and a gradually reducing area from bottom to top, namely, the lower part is a cone section area, and the upper part is a reverse cone section area. The cooling section 2 is connected to the top of the tapering zone. The wall surface of the gasification chamber 1 is made of refractory material for heat insulation design, so that sufficient heat storage and stable gasification can be realized. The cooling section 2 is a water-cooling film type wall or a heat conducting oil cooling wall surface.
A feeding device 3 is arranged on one side of the gasification chamber 1. The feeding device 3 comprises a hopper 301, a screw feeder 302, a roller feeder 303 and a blanking channel 304 which are connected in sequence. The screw feeder 302 is arranged below the hopper 301 and forms a step feeding with the roller feeder 303. The bottom of the hopper 301 is provided with a sealing valve, usually a gate valve, and a star-shaped feeding valve is arranged in the blanking channel 304, so that the feeding device feeds materials in a double-stage sealing manner. An inclined feeding connecting pipe is arranged between the screw feeder 302 and the roller feeder 303. For smooth feeding, the screw feeder 302 is a shaftless screw feeder. In order to ensure the tightness of feeding, the roller feeder 303 is arranged in a non-equal diameter manner, and the outlet section of the roller feeder is arranged in a gradually reducing manner.
The gasification chamber 1 is provided with a discharge port communicated with the blanking channel 304, the discharge port is arranged on the inclined plane of the reducing area, and the central axis of the blanking channel 304 is perpendicular to the inclined plane of the reducing area provided with the discharge port. The wall surface of the cooling section 2 close to one side of the discharge hole extends downwards to the lower part of the discharge hole to form a flow baffle plate 5.
The material is fed from the hopper 301, and the gate valve and the star-shaped feeding valve are always in opposite opening and closing states, so that the loop is ensured to be disconnected at any time, and the gasification gas is prevented from leaking from the feeding device. The gasification chamber is particularly suitable for high-moisture-content waste materials such as sludge, paper residues, oil sludge and the like. The materials with high water content enter the roller feeder 303 from the inclined feeding connecting pipe under the extrusion of the shaftless screw feeder, roll forward in the roller feeder 303, and fall into the gasification chamber 1 orderly through the discharge port under the control of the star-shaped feeding valve of the blanking channel 304. The material absorbs heat to evaporate water in the falling process, so that the heat absorption capacity of the material at the bottom of the turbulent bed can be reduced, and the requirement on the heat value of the waste material entering the furnace is reduced. The bottom of the gasification chamber 1 is provided with a primary gasification gas air distribution device which is used for introducing air as primary gasification gas and is arranged in a turbulent flow state at the lower part of the gasification chamber 1. The primary gasification gas air distribution device comprises an air distribution plate, an air cap and the like. The slag discharge port is also arranged at the bottom of the gasification chamber and is generally arranged at the lowest part of the air distribution plate.
The joint of the equal section area and the gradually expanding area of the gasification chamber 1 is provided with a plurality of secondary gasification gas nozzles 4 for introducing secondary gasification gas. The secondary gasification gas is arranged according to a high pressure head (more than or equal to 5 kPa) and a small air quantity (the chemical equivalent ratio is less than or equal to 10 percent). Set up high pressure head, little amount of wind's secondary gasification gas and spout into in uniform cross section district bottom, can further improve gasification section temperature, especially up in the suspension section, can emit more heats for this regional macromolecule further decomposes, avoids the formation of tar, provides the heat for the material heat absorption drying and the pyrolysis gasification that get into the vaporizer from the discharge gate simultaneously.
The flow baffle 5 can effectively prevent the materials from being directly sucked out of the gasification chamber 1 by the airflow and entering the cooling section 2.
In one embodiment, as shown in fig. 1, a transverse material channel is connected to the top of the cooling section 2 and is connected to the separator 7. The gasified gas generated after the materials are dried, pyrolyzed and gasified in the gasification chamber 1 goes upward to enter the cooling section 2, heat exchange is carried out in the cooling section 2, and the gas-solid separation in the separator 7 is carried out after the temperature of the gas flow in the material channel is reduced to about 250 ℃. The separated gas enters a dechlorination and dust removal device 8 connected with the separator 7, chlorine and dust in the gas are removed by spraying an adsorbent, and wet electric dust removal is further arranged at the top of the dechlorination and dust removal device 8 for further dust removal. The dedusted gas is pressurized by a pressurizing fan and enters a subsequent desulfurizing tower 9 to remove H2S and other sulfur-containing gases, and the gasified gases are purified and then sent to the gas holder 10 for storage through the pressurizing fan.
The other embodiment mainly aims at waste materials such as waste tires and oil sludge which are rich in macromolecules and need to be subjected to chain breaking for many times, a third gasified air nozzle 6 is further arranged at the top of a tapered region of the gasification chamber, and the third gasified air nozzle 6 is positioned at an inlet of the cooling section 2 to enable a small amount of gasified air to start to burn.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A TFB gasification furnace with double-stage sealed feeding is characterized by comprising a gasification chamber (1), a cooling section (2) arranged at the top of the gasification chamber (1), and a feeding device (3) arranged at one side of the gasification chamber (1);
the gasification chamber (1) sequentially comprises a gradually expanding area, an equal-section area and a gradually reducing area from bottom to top, the cooling section (2) is connected with the top of the gradually reducing area, and the cooling section (2) is arranged in an equal-section straight section;
the feeding device (3) comprises a hopper (301), a screw feeder (302), a roller feeder (303) and a blanking channel (304) which are connected in sequence; the screw feeder (302) is arranged below the hopper (301) and forms step feeding with the roller feeder (303); a sealing valve is arranged at the bottom of the hopper (301), and a star-shaped feeding valve is arranged in the blanking channel (304);
the gasification chamber (1) is provided with a discharge hole communicated with the blanking channel (304), and the discharge hole is arranged on the inclined plane of the gradually-reduced area;
the wall surface of the cooling section (2) close to one side of the discharge hole extends downwards to the lower part of the discharge hole to form a flow baffle plate (5);
the bottom of the gasification chamber (1) is provided with a primary gasification gas air distribution device for introducing primary gasification gas; and a plurality of secondary gasification gas nozzles (4) are arranged at the joints of the equal section area and the gradually expanding area of the gasification chamber (1) and used for introducing secondary gasification gas.
2. The dual stage sealed-fed TFB gasifier according to claim 1, wherein the central axis of the blanking channel (304) is disposed perpendicular to the tapered zone slope in which the exit is disposed.
3. The dual stage sealed fed TFB gasifier according to claim 1, wherein the sealing valve at the bottom of the hopper (301) is a gate valve.
4. The dual stage sealed fed TFB gasifier according to claim 1, wherein the screw feeder (302) is a shaftless screw feeder; the outlet section of the roller feeder (303) is arranged in a reducing mode.
5. The dual stage sealed fed TFB gasifier according to claim 1, wherein the top of the tapered section of the gasifier chamber (1) is further provided with a tertiary gasification gas jet (6), and the tertiary gasification gas jet (6) is located at the inlet of the cooling section (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220617.6A CN112126470A (en) | 2020-11-05 | 2020-11-05 | TFB gasification furnace with double-stage sealed feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011220617.6A CN112126470A (en) | 2020-11-05 | 2020-11-05 | TFB gasification furnace with double-stage sealed feeding |
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| CN112126470A true CN112126470A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011220617.6A Pending CN112126470A (en) | 2020-11-05 | 2020-11-05 | TFB gasification furnace with double-stage sealed feeding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745964A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Environment-friendly solid waste tire Ou metallurgical furnace treatment device |
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| US20100018117A1 (en) * | 2006-12-28 | 2010-01-28 | Jiule Zhou | Dry coal powder gasification furnance |
| CN202040828U (en) * | 2011-05-05 | 2011-11-16 | 武汉凯迪工程技术研究总院有限公司 | Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device |
| CN203940455U (en) * | 2014-06-19 | 2014-11-12 | 广东正鹏生物质能源科技有限公司 | A kind of biomass gasifying furnace feed arrangement with anti-leak function |
| CN104676601A (en) * | 2015-01-21 | 2015-06-03 | 绿能（杭州）企业管理有限公司 | Drum type feeding device for garbage incinerator of circulating fluidized bed and feeding method |
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| CN111102580A (en) * | 2020-01-15 | 2020-05-05 | 上海市机电设计研究院有限公司 | Feeding system for rotary kiln hazardous waste incineration device |
| CN111676065A (en) * | 2020-06-23 | 2020-09-18 | 安徽科达洁能股份有限公司 | Biomass and coal co-gasification system and gasification method |
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2020
- 2020-11-05 CN CN202011220617.6A patent/CN112126470A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100018117A1 (en) * | 2006-12-28 | 2010-01-28 | Jiule Zhou | Dry coal powder gasification furnance |
| CN202040828U (en) * | 2011-05-05 | 2011-11-16 | 武汉凯迪工程技术研究总院有限公司 | Biomass fuel two-stage material plug spiral positive-pressure continuous feeding device |
| CN203940455U (en) * | 2014-06-19 | 2014-11-12 | 广东正鹏生物质能源科技有限公司 | A kind of biomass gasifying furnace feed arrangement with anti-leak function |
| CN104676601A (en) * | 2015-01-21 | 2015-06-03 | 绿能（杭州）企业管理有限公司 | Drum type feeding device for garbage incinerator of circulating fluidized bed and feeding method |
| CN106010655A (en) * | 2016-07-06 | 2016-10-12 | 佛山市绿威生物科技有限公司 | Biomass gasifier |
| CN106867585A (en) * | 2017-04-19 | 2017-06-20 | 大连理工大学 | From detar formula organic solid apparatus for gasifying fuel and method in stove |
| CN108758643A (en) * | 2018-07-17 | 2018-11-06 | 北京亚高科能源科技有限公司 | A kind of gasification, and combustion turbulent flow incinerator |
| CN111102580A (en) * | 2020-01-15 | 2020-05-05 | 上海市机电设计研究院有限公司 | Feeding system for rotary kiln hazardous waste incineration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112745964A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Environment-friendly solid waste tire Ou metallurgical furnace treatment device |
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Application publication date: 20201225 |
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| RJ01 | Rejection of invention patent application after publication |