CN102538004A - Direct electric ignition method and device for entrained bed gasification furnace - Google Patents
Direct electric ignition method and device for entrained bed gasification furnace Download PDFInfo
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- CN102538004A CN102538004A CN2010106007203A CN201010600720A CN102538004A CN 102538004 A CN102538004 A CN 102538004A CN 2010106007203 A CN2010106007203 A CN 2010106007203A CN 201010600720 A CN201010600720 A CN 201010600720A CN 102538004 A CN102538004 A CN 102538004A
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Abstract
The invention discloses a direct electric ignition method for an entrained bed gasification furnace. Direct current or alternating current is used as a power supply, the low voltage is boosted to a positive high voltage and a negative high voltage by using a plasma generator and through a booster circuit, and pulverized coal or coal slurry is directly ignited by using a plasma gas formed by positive high voltage and negative high voltage ionized gas, namely a plasma torch of which temperature can reach 3,000 to 10,000K. A direct electric ignition device for the entrained bed gasification furnace, which is used by the method, has a split structure and consists of two parts, wherein one part is the plasma generator, and the other part is an electrode set; an electrode and an arc discharge end are wrapped by an insulated ceramic ring; the discharge end of the arc discharge end is a naked tip; and the arc discharge end is 'L'-shaped, and the upper end of the vertical part of the arc discharge end is in threaded connection with the lower end of the electrode. The device can be formed by reforming the conventional process burner, and the structures of the burner and the gasification furnace are not required to be changed, so that the ignition efficiency is improved and the use cost is reduced.
Description
Technical field
What the present invention proposed is a kind of ignition method and igniter that the direct-fire of chemical industry stove is used that be used for.The method and the device that particularly relate to the direct firing coal-dust of a kind of powder coal gasification furnace.
Background technology
Along with chemical industry stove each item continuous advancement in technology, the gasification furnace sparking mode also develops towards safer, environmental protection, economic direction thereupon.Plasma is to be heated to excessive temperature and by the gas of height electric power, to have high heat, and joining, auxiliary air can form the high heat plasma arc.Can be widely used in the starting ignition of various imflammable gas devices and various gas fuel industry stove and accessory, be the desirable igniter of industrial furnace.Mostly the ignition method of prior art is that classification or substep methods of printing promptly light combustible gas earlier by igniter, ignites after combustible gas is stable or through accumulation of heat ignite fine coal or coal slurry again.The numerous and jumbled destabilizing factor of system is many in the practical application, and a certain medium or valve occur unusually in the cold hearth ignition process, can cause that all system's jumping car causes loss of ignition; Undesirable or accumulation of heat also will cause the repetition accumulation of heat to the hot wall stove inadequately because of the temperature rise of operating personnel's misoperation system; And the different medium of plurality of specifications coexistence can the construction investment of increase initial stage, also can bring inconvenience to the maintenance, repair in system's later stage.
Summary of the invention
The object of the present invention is to provide direct electrically-fired method of the high airflow bed gasification furnace of a kind of ignition success rate and device.
The direct electrically-fired method of a kind of airflow bed gasification furnace; Adopt direct current or alternating current as power supply; Use plasma generator low-voltage is risen to positive high voltage and negative high voltage through booster circuit, the plasma (orifice) gas that utilizes the formation of positive high voltage and negative high voltage ionized gas is directly ignite coal dust or a coal slurry of plasma torch that temperature can reach 3000～10000K.
The direct electric ignition device of a kind of airflow bed gasification furnace that said method uses, igniter is a split-type structural, is made up of two parts; A part is a plasma generator, and another part is the electrode group; It is characterized in that: the electrode group is two electrodes of symmetry, and electrode one end is connected with puts the arc end, and the electrode other end is electrically connected with plasma generator through connecting line, and plasma generator is connected with power supply through high-tension cable; Electrode and to put arc end inner core be red copper; Electrode and put the arc end and wrap up by the insulation porcelain ring; The discharge end head of putting the arc end is exposed tip; Put the arc end and be " L " shape, the vertical part upper end of putting the arc end is threaded with the electrode lower end, and the discharge end head is given prominence to the about 5～10cm of process burner.
The above-mentioned direct electric ignition device of a kind of airflow bed gasification furnace is characterized in that: the electrode that one connects with put the arc end and fix by the process burner flange connecting hole on top and the head retainer ring of bottom respectively.
The above-mentioned direct electric ignition device of a kind of airflow bed gasification furnace is characterized in that: two electrode bottoms are for alternately coiling shape, and the twisting of electrode section is positioned at process burner head and technology cooling coil relevant position, and the twisting of electrode section is positioned at the technology cooling coil outside.
Advantage of the present invention:
1, the powerful thermal source that utilizes plasma gas to provide directly makes coal dust generation chemical reaction firing coal-dust or coal slurry.
2, the required circuit of plasma generator is simple relatively, workable.
3, igniter cooperates with executing agency simply, good insulation preformance, and process and assemble is simple.
4, this device can be transformed to install additional on original process burner and get final product, and need not the structure of burner and gasification furnace is changed, and has improved ignition effectiveness on the one hand, has reduced use cost on the other hand.
Further describe technical scheme of the present invention below in conjunction with accompanying drawing and embodiment.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is assembling sketch mapes of the embodiment of the invention 1.
Accompanying drawing 3 is assembling sketch mapes of the embodiment of the invention 2.
In the accompanying drawing 1, plasma generator 2, connecting line 3, compressing tablet 4, pressure cap 5, electrode 6, put arc end 7, insulation porcelain ring 8, discharge end head 9, process burner 10, process burner flange connecting hole 11, twisting of electrode section 12, head retainer ring 13, technology cooling coil
The specific embodiment
The direct electrically-fired method of a kind of airflow bed gasification furnace; Adopt direct current or alternating current as power supply; Use plasma generator low-voltage is risen to positive high voltage and negative high voltage through booster circuit, the plasma (orifice) gas that utilizes the formation of positive high voltage and negative high voltage ionized gas is directly ignite coal dust or a coal slurry of plasma torch that temperature can reach 3000～10000K.
Shown in accompanying drawing 1, accompanying drawing 2, the direct electric ignition device of a kind of airflow bed gasification furnace that said method uses, igniter is a split-type structural, is made up of two parts; A part is a plasma generator 1, and another part is the electrode group; The electrode group is two electrodes 5 of symmetry, and electrode 5 one ends are connected with puts arc end 6, and the electrode other end is electrically connected with plasma generator 1 through connecting line 2, and plasma generator 1 is connected with power supply through high-tension cable; Electrode 5 and to put arc end 6 inner cores be red copper; Electrode and put the arc end and wrap up by the insulation porcelain ring; The discharge end head 8 of putting arc end 6 is exposed tip; Put the arc end and be " L " shape, the vertical part upper end of putting arc end 6 is threaded with electrode 5 lower ends, but purpose is to ensure the discharge end head easy removal of damage.The discharge end head 8 outstanding about 5～10cm of process burner.The electrode 5 that one connects with put arc end 6 and fix by the process burner flange connecting hole 10 on top and the head retainer ring 12 of bottom respectively.Two electrode bottoms are for alternately coiling shape, and twisting of electrode section 11 is positioned at process burner head and technology cooling coil 13 relevant positions, and twisting of electrode section 11 is positioned at technology cooling coil 13 outsides.
Embodiment 2
The direct electrically-fired method of a kind of airflow bed gasification furnace; Adopt direct current or alternating current as power supply; Use plasma generator low-voltage is risen to positive high voltage and negative high voltage through booster circuit, the plasma (orifice) gas that utilizes the formation of positive high voltage and negative high voltage ionized gas is directly ignite coal dust or a coal slurry of plasma torch that temperature can reach 3000～10000K.
Shown in accompanying drawing 3, the direct electric ignition device of a kind of airflow bed gasification furnace that said method uses, igniter is a split-type structural, is made up of two parts; A part is a plasma generator 1, and another part is the electrode group; The electrode group is two electrodes 5 of symmetry, and electrode 5 one ends are connected with puts arc end 6, and the electrode other end is electrically connected with plasma generator 1 through connecting line 2, and plasma generator 1 is connected with power supply through high-tension cable; Electrode 5 and to put arc end 6 inner cores be red copper; Electrode and put the arc end and wrap up by the insulation porcelain ring; The discharge end head 8 of putting arc end 6 is exposed tip; Put the arc end and be " L " shape, the vertical part upper end of putting arc end 6 is threaded with electrode 5 lower ends, but purpose is to ensure the discharge end head easy removal of damage.The electrode 5 that one connects with put arc end 6 and slope inwardly axisymmetrically from top of gasification furnace respectively and insert in the gasification furnace, two discharge end heads in opposite directions, the discharge end head 8 outstanding about 5～10cm of process burner.
Claims (4)
1. direct electrically-fired method of airflow bed gasification furnace; Adopt direct current or alternating current as power supply; Use plasma generator low-voltage is risen to positive high voltage and negative high voltage through booster circuit, the plasma (orifice) gas that utilizes the formation of positive high voltage and negative high voltage ionized gas is directly ignite coal dust or a coal slurry of plasma torch that temperature can reach 3000～10000K.
2. the direct electric ignition device of a kind of airflow bed gasification furnace that uses of the said method of claim 1, igniter is a split-type structural, is made up of two parts; A part is plasma generator (1), and another part is the electrode group; It is characterized in that: the electrode group is two electrodes (5) of symmetry, and electrode (5) one ends are connected with puts arc end (6), and the electrode other end is electrically connected with plasma generator (1) through connecting line (2), and plasma generator (1) is connected with power supply through high-tension cable; Electrode (5) and to put arc end (6) inner core be red copper; Electrode and put the arc end and wrap up by the insulation porcelain ring; The discharge end head (8) of putting arc end (6) is exposed tip; Put the arc end and be " L " shape, the vertical part upper end of putting arc end (6) is threaded with electrode (5) lower end, and discharge end head (8) is given prominence to the about 5～10cm of process burner.
3. the direct electric ignition device of a kind of airflow bed gasification furnace according to claim 2 is characterized in that: the electrode (5) that one connects and put arc end (6) and fixed by the process burner flange connecting hole (10) on top and the head retainer ring (12) of bottom respectively.
4. the direct electric ignition device of a kind of airflow bed gasification furnace according to claim 3; It is characterized in that: two electrode bottoms are for alternately coiling shape; Twisting of electrode section (11) is positioned at process burner head and technology cooling coil (13) relevant position, and twisting of electrode section (11) is positioned at technology cooling coil (13) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106007203A CN102538004A (en) | 2010-12-11 | 2010-12-11 | Direct electric ignition method and device for entrained bed gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106007203A CN102538004A (en) | 2010-12-11 | 2010-12-11 | Direct electric ignition method and device for entrained bed gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102538004A true CN102538004A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106007203A Pending CN102538004A (en) | 2010-12-11 | 2010-12-11 | Direct electric ignition method and device for entrained bed gasification furnace |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD245473A1 (en) * | 1986-02-03 | 1987-05-06 | Orgreb Inst Kraftwerke | METHOD AND ARRANGEMENT FOR ELECTRICALLY TURNING A CARBON AIR COMPOUND |
| CN1056349A (en) * | 1990-05-03 | 1991-11-20 | 李大启 | A kind of fast ignitor |
| CN2326861Y (en) * | 1998-03-31 | 1999-06-30 | 烟台开发区龙源电力燃烧控制工程有限公司 | Plasma ignition device for directly igniting coal-ash boiler of power station |
| CN201909337U (en) * | 2010-12-11 | 2011-07-27 | 水煤浆气化及煤化工国家工程研究中心 | Direct electric ignition device for air flow bed gasification furnace |
-
2010
- 2010-12-11 CN CN2010106007203A patent/CN102538004A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD245473A1 (en) * | 1986-02-03 | 1987-05-06 | Orgreb Inst Kraftwerke | METHOD AND ARRANGEMENT FOR ELECTRICALLY TURNING A CARBON AIR COMPOUND |
| CN1056349A (en) * | 1990-05-03 | 1991-11-20 | 李大启 | A kind of fast ignitor |
| CN2326861Y (en) * | 1998-03-31 | 1999-06-30 | 烟台开发区龙源电力燃烧控制工程有限公司 | Plasma ignition device for directly igniting coal-ash boiler of power station |
| CN201909337U (en) * | 2010-12-11 | 2011-07-27 | 水煤浆气化及煤化工国家工程研究中心 | Direct electric ignition device for air flow bed gasification furnace |
Non-Patent Citations (1)
| Title |
|---|
| 薛锐: "火电厂等离子点火技术的应用与研究", 《能源工程》 * |
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Application publication date: 20120704 |