CN108980883B - Biomass material lock and working method - Google Patents
Biomass material lock and working method Download PDFInfo
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- CN108980883B CN108980883B CN201811010613.8A CN201811010613A CN108980883B CN 108980883 B CN108980883 B CN 108980883B CN 201811010613 A CN201811010613 A CN 201811010613A CN 108980883 B CN108980883 B CN 108980883B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
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Abstract
A biomass material lock and a working method. If the biomass feeding system has the problems of blockage, high-temperature flue gas backflow and the like, the operation of the biomass incinerator or the biomass gasification furnace can be influenced, and safety accidents such as ignition and even explosion of the feeding system can be caused. The invention comprises the following components: casing (1), casing internally mounted have bleeder valve (2), the bleeder valve pass through drive mechanism (4) and be connected with feed valve (3), the casing respectively with once fill release pipeline (5), secondary release pipeline (10), atmoseal pipeline (14) and be connected, once fill release pipeline and buffer tank (7) and be connected, secondary release pipeline be connected with dust remover (12), secondary pressurization pipeline (8) respectively, casing internally mounted have feed valve, material level monitor (13), the material level monitor be located the casing top, the feed valve pass through drive mechanism (4) and be connected with bleeder valve (2), the inside top of casing install the material level monitor. The invention is used for a feeding system for biomass power generation.
Description
The technical field is as follows:
the invention relates to a biomass material lock.
Background art:
the biomass power generation technology is an energy-saving and environment-friendly advanced power generation technology, and is divided into a biomass direct-fired power generation technology, a biomass mixed-fired power generation technology and a biomass gasification power generation technology according to a technical route, the three biomass power generation technologies have high requirements on the stability and the safety of a biomass feeding system, and if the biomass feeding system has the problems of blockage, high-temperature flue gas backflow and the like, the operation of a biomass incinerator or a biomass gasifier can be influenced, and safety accidents such as ignition and even explosion of the feeding system can be caused.
The existing biomass feeding system has two problems: (1) blocking a feeding system: most biomass power generation systems require feeding continuity, and if a blockage phenomenon occurs, the working condition of a biomass incinerator or a biomass gasification furnace is greatly fluctuated and even the furnace is shut down, so that irreparable loss is caused to production; (2) high-temperature flue gas reflux: for some boilers with frequent pressure fluctuation, particularly for positive pressure furnaces, if the tightness of a feeding system is poor, the phenomenon that high-temperature flue gas in the furnace flows back to the feeding system is likely to occur, so that biomass materials are ignited, and the feeding system is burned or even exploded.
The invention content is as follows:
the invention aims to provide a biomass material lock and a working method.
The above purpose is realized by the following technical scheme:
a biomass lock, comprising: the casing, casing internally mounted have the bleeder valve, the bleeder valve pass through drive mechanism and be connected with the feed valve, the casing respectively with once fill pressure relief pipeline, secondary pressure relief pipeline, atmoseal tube coupling, once fill the pressure relief pipeline and be connected with the buffer tank, secondary pressure relief pipeline respectively with dust remover, secondary pressure filling tube coupling, casing internally mounted have feed valve, material level monitor, the material level monitor be located the casing top, the feed valve pass through drive mechanism and be connected with the bleeder valve, the inside top of casing install the material level monitor.
The biomass material lock, a pressure relief valve is installed on the primary pressure relief pipeline, a secondary pressure relief valve is installed on the secondary pressure relief pipeline, and an air seal valve is installed on the air seal pipeline.
The shell of the biomass material lock is internally provided with a feeding hole, a discharging hole, an access hole, a primary pressure charging and discharging hole, a secondary pressure charging and discharging hole and an air sealing hole.
A method of operating a biomass lock according to any one of claims 1 to 3, the method including the steps of:
(1) under normal pressure, a feeding valve is opened, biomass materials enter a material lock through a feeding hole in the upper part of a shell, after the biomass materials are filled to a material level line, the feeding valve is closed, a primary pressure charging and discharging valve is opened, the material lock is charged by pressurized gas cached in a buffer tank, after the pressure is balanced, the primary pressure charging and discharging valve is closed, a secondary pressure charging valve is opened, the pressurized gas is continuously charged, and the pressure in the material lock is charged to be balanced with the pressure of downstream equipment;
(2) after the material lock is pressurized, the discharging valve is opened, and the material lock feeds materials to downstream equipment; when the material lock discharges materials, the gas seal valve is in an open state, the pressure of the discharge port is maintained by the pressurized gas, and the gas of downstream equipment is prevented from reversely crossing the material lock;
(3) when the biomass material in the material lock is reduced to a material level line, the discharge valve and the air seal valve are closed simultaneously, the primary pressure charging and discharging valve is opened, the gas in the material lock is discharged to the buffer tank, after the pressure is balanced, the primary pressure charging and discharging valve is closed, the secondary pressure discharging valve is opened, and the residual pressure charging gas is discharged after being processed by the dust remover; and when the pressure in the material lock is reduced to the normal pressure, closing the secondary pressure relief valve, and thus completing a cycle.
In the working method of the biomass lock, the adopted pressurized gas can be air, carbon dioxide or nitrogen.
According to the working method of the biomass material lock, the swing stroke of the inlet valve and the outlet valve after opening is 100-300 mm.
Has the advantages that:
the invention realizes the tightness of the feeding process through the cyclic process flows of feeding, pressurizing, discharging, pressure relief and feeding; partial pressurizing gas is stored in the buffer tank by adopting a process flow of grading pressurizing, so that the cyclic utilization of the partial pressurizing gas and energy is realized; during discharging, a gas seal structure is adopted to maintain the pressure of a discharge port, so that high-temperature flue gas from downstream equipment and the like are prevented from being reversely connected; after the feed valve and the discharge valve are opened, the feed valve and the discharge valve swing within a certain stroke, so that the stirring effect is achieved, and the continuous stability of feeding and discharging is ensured.
The pressurized gas can be discharged to the atmosphere or recycled after being dedusted by the secondary pressure relief pipeline, so that the energy is saved and the environment is protected.
The system is reliable and stable in feeding; the material applicability is wide, and the method is suitable for rice hulls, biomass briquettes, biomass particles and the like; the system has good tightness, realizes pressure balance in the charging and discharging process through pressure charging and discharging, and is suitable for a positive pressure feeding system with higher requirement on tightness; the grading pressure charging and discharging is adopted, partial charging gas and energy are saved through the buffer tank, and comprehensive utilization of energy is effectively realized.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
example 1:
a biomass lock, comprising: casing 1, casing internally mounted have bleeder valve 2, the bleeder valve pass through drive mechanism 4 and be connected with feed valve 3, the casing respectively with once fill release pipeline 5, secondary release pipeline 10, atmoseal pipeline 14 and be connected, once fill release pipeline and buffer tank 7 and be connected, secondary release pipeline be connected with dust remover 12, secondary pressurization pipeline 8 respectively, casing internally mounted have feed valve, material level monitor 13, the material level monitor be located the casing in the top, the feed valve pass through drive mechanism 4 and be connected with bleeder valve 2, the inside top of casing install the material level monitor.
Example 2:
according to the biomass material lock of embodiment 1, the primary pressure and pressure relief valve 6 is installed on the primary pressure and pressure relief pipeline, the secondary pressure and pressure relief valve 11 is installed on the secondary pressure and pressure relief pipeline, the secondary pressure and pressure relief valve 9 is installed on the secondary pressure and pressure relief pipeline, and the air seal pipeline is provided with the air seal valve 15.
Example 3:
according to the biomass material lock of embodiment 1 or 2, a feed inlet, a discharge outlet, an access hole, a primary pressure charging and discharging hole, a secondary pressure charging and discharging hole and an air sealing hole are arranged in the shell.
Example 4:
a method of operating a biomass lock according to any one of claims 1 to 3, the method including the steps of:
(1) under normal pressure, a feeding valve is opened, biomass materials enter a material lock through a feeding hole in the upper part of a shell, after the biomass materials are filled to a material level line, the feeding valve is closed, a primary pressure charging and discharging valve is opened, the material lock is charged by pressurized gas cached in a buffer tank, after the pressure is balanced, the primary pressure charging and discharging valve is closed, a secondary pressure charging valve is opened, the pressurized gas is continuously charged, and the pressure in the material lock is charged to be balanced with the pressure of downstream equipment;
(2) after the material lock is pressurized, the discharging valve is opened, and the material lock feeds materials to downstream equipment; when the material lock discharges materials, the gas seal valve is in an open state, the pressure of the discharge port is maintained by the pressurized gas, and the gas of downstream equipment is prevented from reversely crossing the material lock;
(3) when the biomass material in the material lock is reduced to a material level line, the discharge valve and the air seal valve are closed simultaneously, the primary pressure charging and discharging valve is opened, the gas in the material lock is discharged to the buffer tank, after the pressure is balanced, the primary pressure charging and discharging valve is closed, the secondary pressure discharging valve is opened, and the residual pressure charging gas is discharged after being processed by the dust remover; and when the pressure in the material lock is reduced to the normal pressure, closing the secondary pressure relief valve, and thus completing a cycle.
Example 5:
according to the working method of the biomass lock of embodiment 4, the adopted pressurizing gas can be air, carbon dioxide or nitrogen.
Example 6:
according to the working method of the biomass material lock in the embodiment 4 or 5, the swing stroke of the inlet valve and the outlet valve after being opened is 100-300 mm.
Claims (3)
1. A working method of a biomass material lock is characterized by comprising the following steps: the biomass material lock comprises a shell, wherein a discharge valve is arranged in the shell and is connected with a feed valve through a transmission mechanism, the shell is respectively connected with a primary pressure charging and discharging pipeline, a secondary pressure discharging pipeline and an air seal pipeline, the primary pressure charging and discharging pipeline is connected with a buffer tank, the secondary pressure discharging pipeline is respectively connected with a dust remover and a secondary pressure charging pipeline, a feed valve and a material level monitor are arranged in the shell, the material level monitor is positioned at the top in the shell, the feed valve is connected with the discharge valve through the transmission mechanism, and the material level monitor is arranged at the top in the shell;
a primary pressure relief valve is arranged on the primary pressure relief pipeline, a secondary pressure relief valve is arranged on the secondary pressure relief pipeline, and an air seal valve is arranged on the air seal pipeline;
a feed inlet, a discharge outlet, an access hole, a primary pressure charging and discharging hole, a secondary pressure charging and discharging hole and an air sealing hole are arranged in the shell;
the working method of the biomass material lock comprises the following steps: step-by-step pressure charging and releasing is adopted, (1) under normal pressure, a feeding valve is opened, biomass materials enter a material lock through a feeding hole in the upper part of a shell, after the biomass materials are charged to a material level line, the feeding valve is closed, a primary pressure charging and releasing valve is opened, the material lock is charged by pressure charging gas cached in a buffer tank, after the pressure is balanced, the primary pressure charging and releasing valve is closed, a secondary pressure charging valve is opened, the pressure charging gas is continuously charged, and the pressure in the material lock is charged to be balanced with the pressure of downstream equipment; (2) after the material lock is pressurized, the discharging valve is opened, and the material lock feeds materials to downstream equipment; when the material lock discharges materials, the gas seal valve is in an open state, the pressure of the discharge port is maintained by the pressurized gas, and the gas of downstream equipment is prevented from reversely crossing the material lock; (3) when the biomass material in the material lock is reduced to a material level line, the discharge valve and the air seal valve are closed simultaneously, the primary pressure charging and discharging valve is opened, the gas in the material lock is discharged to the buffer tank, after the pressure is balanced, the primary pressure charging and discharging valve is closed, the secondary pressure discharging valve is opened, and the residual pressure charging gas is discharged after being processed by the dust remover; after the pressure in the material lock drops to the ordinary pressure, close the secondary pressure relief valve, accomplish a circulation so far, after feed valve, bleeder valve opened, will swing in certain stroke, play the stirring effect, guarantee the continuous stability of advancing, the ejection of compact.
2. The method of operating a biomass lock of claim 1, wherein: the adopted pressurizing gas can be air, carbon dioxide or nitrogen.
3. The method of operating a biomass lock of claim 2, wherein: the swing stroke of the inlet valve and the outlet valve after opening is 100-300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811010613.8A CN108980883B (en) | 2018-08-31 | 2018-08-31 | Biomass material lock and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811010613.8A CN108980883B (en) | 2018-08-31 | 2018-08-31 | Biomass material lock and working method |
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| Publication Number | Publication Date |
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| CN108980883A CN108980883A (en) | 2018-12-11 |
| CN108980883B true CN108980883B (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811010613.8A Active CN108980883B (en) | 2018-08-31 | 2018-08-31 | Biomass material lock and working method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110260956A (en) * | 2019-06-14 | 2019-09-20 | 湖南碧臣环境能源有限公司 | A kind of anti-device input and output material control system of biology and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938451A (en) * | 1975-01-03 | 1976-02-17 | Andco Incorporated | Gasifier charging system |
| CN201834890U (en) * | 2010-09-20 | 2011-05-18 | 山东华鲁恒升化工股份有限公司 | Slurry and powder making device for gasification furnace |
| CN203346345U (en) * | 2013-04-28 | 2013-12-18 | 上海泽玛克敏达机械设备有限公司 | Coaling system utilizing byproduct carbon dioxide gas to perform pressure charging and relief on coal locks |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201678642U (en) * | 2009-12-03 | 2010-12-22 | 刘宏建 | Graded pressure charging and discharging device for pressing gasification furnace coal lock |
| CN102925216A (en) * | 2012-10-25 | 2013-02-13 | 云南煤化工集团有限公司 | Method for implementing mutual pressurization/depressurization among pressurized gasification furnace coal locks |
| CN103215078B (en) * | 2013-04-28 | 2014-10-22 | 上海泽玛克敏达机械设备有限公司 | Pressurizing and decompressing process for coal lock by utilizing byproduct carbon dioxide gas and coaling system |
| CN108085065A (en) * | 2018-01-22 | 2018-05-29 | 伊犁新天煤化工有限责任公司 | A kind of new pressurized fixed-bed gasification furnace coal lock fills pressure release energy saving buffer and method |
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2018
- 2018-08-31 CN CN201811010613.8A patent/CN108980883B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3938451A (en) * | 1975-01-03 | 1976-02-17 | Andco Incorporated | Gasifier charging system |
| CN201834890U (en) * | 2010-09-20 | 2011-05-18 | 山东华鲁恒升化工股份有限公司 | Slurry and powder making device for gasification furnace |
| CN203346345U (en) * | 2013-04-28 | 2013-12-18 | 上海泽玛克敏达机械设备有限公司 | Coaling system utilizing byproduct carbon dioxide gas to perform pressure charging and relief on coal locks |
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| CN108980883A (en) | 2018-12-11 |
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