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Method for rising superheated steam temperature of concurrent boiler during pipe blowing

A technology of superheated steam and once-through boiler, which is applied in the direction of steam superheating, steam generation, lighting and heating equipment, etc., to save blowing time, cost and fuel.

Inactive Publication Date: 2015-03-11
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for raising the temperature of the superheated steam of the once-through boiler blowpipe, which can solve the problem that the temperature of the superheated steam of the once-through boiler fuel blowpipe is too low and the blowpipe effect is not good, so as to overcome the shortcomings of the prior art

Method used

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  • Method for rising superheated steam temperature of concurrent boiler during pipe blowing

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Embodiment

[0016] Embodiment: the connection structure of each device of this system is as follows figure 1 As shown, the main devices of the system are water wall 1, water storage tank discharge valve 2, superheater 3, superheater trap 4, steam turbine 5, blowpipe control valve 6, reheater 7, and the connected pipes and valves.

[0017] When the system connection is normal, during the gap between the two blowpipes, use the method of water-cooled wall exchange or superheater exhaust to control the pressure increase speed of the steam-water system to ensure that the heating surface of the superheater has enough heating time to improve Superheated steam temperature, satisfying the higher superheated steam temperature when blowing the pipe.

[0018] The operation method is to use one or both of method a or method b:

[0019] The method a is to replace the high-temperature water with low-temperature water to reduce steam discharge and control the pressure increase speed of the steam-water s...

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Abstract

The invention discloses a method for rising superheated steam temperature of a concurrent boiler during fuel pipe blowing. The method adopts a water cooled wall water-exchange method or a superheater steam-discharging method to control the pressure rising speed of a steam water system and enables a superheater to obtain enough heating time so as to ensure the superheated steam temperature during pipe blowing and pipe blowing effect. The method for rising the superheated steam temperature has the advantages that 1, pipe blowing times are few and are ordinarily 20-30 times fewer than the times by means of a conventional pipe blowing method; 2, the pipe blowing time is saved by 12 hours, 150 tons of fuel amount is saved, and 2400 tons of desalting water amount is saved.

Description

technical field [0001] The invention relates to a method for raising the temperature of superheated steam of a once-through boiler fuel blowing pipe, and belongs to the technical field of once-through boiler start-up and debugging. Background technique [0002] The once-through boiler fuel blowing system mainly includes water wall 1, water storage tank discharge valve 2, superheater 3, superheater trap 4, steam turbine 5, blowpipe control valve 6, reheater 7, and connected pipes and valves. The blowing process is as follows: the feed water is heated in the water wall to become steam, and the steam is heated in the superheater to become superheated steam. When the pressure of the superheated steam reaches the blowing parameters, the blowing control valve 6 is opened, and the superheated steam passes through the blowing control valve and reheats device, into the atmosphere. When the superheated steam pressure drops to the specified pressure, close the blowpipe control valve a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22G1/00
Inventor 陈玉忠
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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