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Method for debugging boiler by pipe blowing

A debugging method and boiler technology, applied in the direction of combustion method, combustion product treatment, solid residue removal, etc., can solve the problems of large water consumption and fuel consumption, long blowing time, poor blowing effect, etc., to reduce fuel consumption and The effect of reducing time consumption, improving debugging quality, and shortening debugging time

Inactive Publication Date: 2010-12-15
STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these two methods, the pressure-stabilizing blowpipe method has the advantages of simple operation, but its disadvantages are that the water consumption and fuel consumption are too large, the blowpipe time is long, and the blowpipe effect is poor; The oil volume is small and the blowpipe effect is good, but the disadvantage is that the operation is complicated and the equipment is easy to be damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) During the commissioning of the power plant boiler, a blowpipe control door is connected to the outlet of the superheater of the boiler, and a particle collector is installed behind the blowpipe control door. The other end of the particle collector connected to one end of the blowpipe control door is connected to the cold section inlet of a reheater;

[0023] (2), with reference to the predetermined structural parameters given by the boiler described in step (1), use conventional methods to calculate the instant steam pressure, steam flow and steam temperature of the boiler;

[0024] (3) Alternately use the conventional pressure-stabilizing blowpipe method and the conventional pressure-reducing blowpipe method to debug the boiler supplied in step (1);

[0025] When using the conventional pressure-stabilizing blowpipe method, make the boiler meet the following requirements:

[0026] The steam pressure of the water wall outlet separator: 5.8~6.2MPa,

[0027] Steam p...

Embodiment 2

[0039] Steps (1)~(2) are with embodiment 1;

[0040] (3) Alternately use the conventional pressure-stabilizing blowpipe method and the conventional pressure-reducing blowpipe method to debug the boiler supplied in step (1);

[0041] When using the conventional pressure-stabilizing blowpipe method, make the boiler meet the following requirements:

[0042] The steam pressure of the water wall outlet separator: 5.8~6.2MPa,

[0043] Steam pressure at the outlet of the superheater: 3.4~3.6MPa,

[0044] Steam temperature at the outlet of superheater: 425~435℃,

[0045] Steam flow at superheater outlet: 780~1400t / h,

[0046] The steam pressure at the inlet of the reheater: 0.96~1.03MPa,

[0047] Steam pressure at the outlet of the reheater: 0.7-0.8MPa,

[0048] The steam temperature at the inlet of the reheater: 400~410℃,

[0049] Steam temperature at reheater outlet: 455-465°C;

[0050] While implementing the above-mentioned pressure-stabilizing blowpipe method, a conventiona...

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Abstract

The invention discloses a method for debugging a boiler by pipe blowing. The method comprises the following steps of: (1) connecting a pipe blowing control gate to an overheater outlet of a boiler, arranging a particle collecting device, and connecting one end of the particle collecting device with a reheater; (2) calculating pressure, flow rate and temperature of steam by the conventional method; and (3) debugging the boiler by alternately using the conventional stable-pressure pipe blowing method and the conventional reduced-pressure pipe blowing method. By successfully solving the technical problem of pipe blowing debugging in the debugging period of a power station boiler, the method has the advantages of improving boiler debugging quality, shortening debugging time, overcoming the defects of the boiler and a coal pulverizing system thereof, reducing oil consumption and time cost in the boiler debugging period, and fulfilling the aims of high efficiency and energy saving.

Description

technical field [0001] The invention belongs to the technical field of thermal power generation, and specifically refers to a blowpipe debugging method for boilers, which is widely applicable to the debugging of supercritical unit boilers in thermal power plants. Background technique [0002] Supercritical unit boilers in thermal power plants usually use the method of stabilizing the blowpipe or the method of reducing the blowpipe to complete the commissioning. Among these two methods, the pressure-stabilizing blowpipe method has the advantages of simple operation, but its disadvantages are that the water consumption and fuel consumption are relatively large, the blowpipe time is long, and the blowpipe effect is poor; The oil volume is small and the blowpipe effect is good, but the disadvantage is that the operation is complicated and the equipment is easy to be damaged. Therefore, there is an urgent need to find a new blowpipe method, which can combine the strengths of the...

Claims

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Application Information

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IPC IPC(8): F23J3/02
Inventor 黄伟熊蔚立彭敏李文军张建玲
Owner STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
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